Maverick I Commercial Packaged Rooftop Systems Heating ...lit.daikinapplied.com/bizlit/DocumentStorage/RooftopSystems/...Unit Features & Benefits—MPS-007A thru 020A Maverick I rooftop

Catalog 251-1

Maverick I™Commercial Packaged Rooftop SystemsHeating & CoolingGas/ElectricModels MPS003A - 020A3 to 20 Tons [10.6 to 70.3 kW]

2 McQuay Cat 251-1

Table of Contents

Nomenclature ........................................................................ 3Unique Features & Options ........................................... 4-5Unit Features & Benefits ............................................... 6-9Selection Procedure ...................................................... 10Options ........................................................................ 11General Data ........................................................... 12-32-General Data Notes ...................................................... 33Performance Data .................................................... 34-38

Airflow Performance ................................................. 39-49Electrical Data .......................................................... 50-61Dimensional Data ..................................................... 62-75Accessories ............................................................. 76-89Mechanical Specifications ......................................... 90-91Typical Wiring .........................................................92-110Limited Warranty ......................................................... 112

MPS - 003 B G C L 08 E XXX

Nomenclature

McQuay Package System

Unit Size003 = 3 Tons004 = 4 Tons005 = 5 Tons006 = 6 Tons007 = 7.5 Tons008 = 8.5 Tons010 = 10 Tons012 = 12.5 Tons015 = 15 Tons020 = 20 Tons

VintageB = R-410A refrigerant

Natural Gas Heating

Electrical DesignationC = 208/230V-3PH 60HzD = 460 V-3PH 60HzY = 575 V, 3 PH, 60 Hz

Economizer Option,Factory Installed Options

Electric Gas Heat Ignition

Heating Capacity (MBH)08 = 80,000 [23.4]10 = 100,000 [29.3]12 = 120,000 [35.2]13 = 135,000 [39.6]15 = 150,000 [44.0]22 = 225,000 [66.0]25 = 252,000 [73.9]30 = 300,000 [87.0]35 = 350,000 [102.6]40 = 400,000 [117.2]

Drive PackageK = Direct DriveL = Belt DriveM = Belt Drive - High Static

• All Maverick I models feature scroll compressors (R-410A refrigerant) offering maximum reliability, efficiency, and quiet operation.

• Aluminized steel heat exchanger with in-shotburners helps eliminate corrosion. Stainless steel heat exchangers are optional.

• Integrated blower/burner control board with built-in diagnostic capability permits on-site troubleshooting.

• One-piece top over the indoor section with drip lip, drawn base pan, and 1" [25.4 mm] raised flanges for supply/return air connections provides superior water management.

• Convertible horizontal and vertical airflow design allows maximum field flexibility.

• Standard, full-perimeter, forkable, 14-gauge baserail with lifting holes for easier maneuvering and installations.

• Factory-installed throw-away filter.• Drive options to accommodate a wide range of

design conditions as high as 2 inches [.50 kPa]of external static pressure.

• Easy access to mechanical components, whichpromotes routine maintenance and can reduceservice costs.

• Number- and color-coded wiring helps facilitateservice and maintenance.

• Common cabinet and components allows for installa-tion flexibility and fewer parts to inventory.

• Standard freezestat control offers evaporator coil freeze protection, on all Tier II models.

• Optional factory-installed compressor high and low-pressure safety switches.

• Externally mounted refrigerant gauge ports for easy service diagnostics.

• Side and base electric power and gas connection entry helps minimize roof penetrations.

• Quick-assembly common roof curbs help save field labor and maximize size flexibility.

• Easy-to-install, plug-in, slip-in, 100% fully modulat-ing economizers with enthalpy control.

• Quality baked powder paint finish offers long lasting protection against extreme weather conditions andis able to withstand 1,000 hour salt spray test per ASTM B117.

Agency Listed

McQuay Cat 251-1 3

Competitively priced rooftop systems for 1 to 3 story buildings

4 McQuay Cat 251-1

McQuay’s Unique Features and Options

Polymer, double-sloped drain pan • Prevents corrosion• Avoids standing water for high IAQ• Sloped per ASHRAE Standard 62.1-2004

Easy access doors• Provides easy access to

system components for maintenance and servicability.

External refrigerant gauge ports• Easy access for service• Allows inspection of refrigerant

system performance with allpanels installed on the air handling sections.

3 to 6 Ton [10.6 to 21.1 kW] Unit

Durable Construction• Baked powder paint exterior cabinet

panels pass 1000-hour ASTM B 117 Salt Spray Test for durability.

• 18 gauge sheet metal for durability and low leakage rates

• 3/4-inch, foil face insulation with mechanical fasteners helps prevent insulation damage and fibers in the airstream

[ ] Designates Metric Conversions

McQuay Cat 251-1 5

Maverick I™—3 to 20 Tons [10.6 to 70.3 kW]

Scroll compressors• R-22 refrigerant• Provide maximum depend ability, efficiency and

quiet operation.• Two refrigerant circuits on larger units

provides redundancy for reliable cooling• Optional compressor low and high

pressure safety switches.• Optional compressor time delay protection.

Full perimeter, forkable base rail• Allows easy maneuvering

and installation

Optional louvered panels• For added protection of the

condensing coils from hail andother physical damage.

Slide out fan (7 to 20 Ton [24.6 to 70.3 kW] units)• For easy access and serviceability.

7.5 to 12.5 Ton [26.4 to 44.0 kW] Unit(15 to 20 Ton [52.8 to 70.3 kW] Unit Not Shown)

Gas Heat• Tubular heat exchanger with in-shot burn-

ers for maximum heat transfer. • Two-stage gas valve with direct spark

ignition provides greater efficiency on 7.5 Ton and larger units.


Unit Features & Benefits—MPS-007A thru 020A

Maverick I rooftop units are designed from the ground up with the latest features and benefits required to compete in today’s market. The clean design stands alone in the industry and is a testament to the quality, reliability, ease of installation and serviceability that goes into each unit.

The sheet-metal cabinet ( 2 ) uses nothing less than 18-gauge material for structural components with an underlying coat of G90. To ensure the leak-proof integrity of these units, the design utilizes a one-piece top with a 1/8" drip lip ( 3 ), gasket-protected panels and screws. The Maverick I hail guard ( 4 ) sets the standard for coil protection in the industry. Every unit has an electro deposition baked-on powder coat finish and is tested to withstand a rigorous 1000-hour salt spray test, per ASTM B117.

Anything built to last must start with the right foundation. In this case, the foundation is 14-gauge, commercial-grade, full-perimeter base rails ( 5 ), which integrate fork slots and rig-ging holes to save set-up time on the job site. The base pan is stamped, which forms a 1-1/8" flange around the supply and return opening to prevent water entering the conditioned space ( 6 ). The drainpan ( 7 ) a non-corrosive polymer that resists the growth of harmful bacteria and is sloped for the latest IAQ benefits. The insulation has been placed on the underside of the basepa n, removing areas that would allow for potential moisture accumulation, which can facilitate growth of harmful bacteria. All insulation is secured with both adhesive and

mechanical fasteners, and all edges are hidden. Each unit was tested to U.L. 1995, ANSI 21.47 and ARI 340-370. Each unit bears the U.L. and ARI certification labels located on the unit nameplate ( 8 ). Contractors can rest assured that when a Maverick I unit arrives at the job, it is ready to go with a fac-tory charge and quality checks. Each unit also proudly dis-plays the “Made in the USA” designation.

Access to all major compartments is from the front of the unit, including the filter and electrical compartment, blower compartment, furnace section, and outdoor section. Each panel is permanently embossed with the compartment name (control/filter access, blower access and furnace access).

Electrical and filter compartment access is through a large, toolless, hinged-access panel. On the outside of the panel is the unit nameplate, which contains the model and serial num-ber, electrical data and other important unit information.

The unit charging chart is located on the inside of the electri-cal and filter compartment door. Electrical wiring diagrams are found on the control box cover, which allows contractors to move them to more readable locations. To the right of the control box the model and serial number can be found. Having this information on the inside will assure model identification for the life of theproduct. The produc-tion line quality test assurance label is also placed in this location( 9 ). The two-inch throwaway filters ( 10 ) are easily removed on a tracked system for easy replacement.

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McQuay Cat 251-1 7


Inside the control box ( 11 ), each electrical component is clearly identified with a label that matches the component to the wire diagram for ease of trouble shoot-ing. All wiring is numbered on each end of the termination and color-coded to match the wiring diagram. The integrated furnace control, used to control furnace operation, incorporates a flashing LED trouble-shooting device. Flash codes are clearly outlined on the unit wiring diagram. The con-trol transformer on units 7.5 tons and above has a low voltage cir-cuit breaker that trips if a low voltage electrical short occurs. There is a blower contactor and compressor contactor for each compressor.

For added convenience in the field, a factory-installed conve-nience outlet and disconnect( 12 ) are available. Low and High voltage can enter either from the side or through the base. Low-voltage connections are made through the low-voltage terminal strip. For ease of access, the U.L.-required low voltage barrier can be temporarily removed for low-voltage termination and then rein-stalled. The high-voltage connection is terminated at the num-ber 1 compressor contactor. The suggested mounting for a field-installed disconnect is on the exterior side of the electri-cal control box.

To the right of the electrical and filter compartment are the externally mounted gauge ports, which are permanently iden-

tified by embossed wording that clearly identifies the compressor circuit, high pressure connection and low pressure connection ( 13 ). With the gauge ports mounted externally, an accurate diagnostic of system operation can be per-formed quickly and easily without disrupting airflow.

The blower compartment is to the right of the gauge ports and can be accessed by removing 5/16" washer-head screws. This panel is not hinged to assure a water-tight fit with the unit. To allow easy maintenance of the blower assembly, the entire assembly easily slides out by removing two 3/8" screws from the blower retention bracket. The adjustable motor pulley( 14 ) can easily be adjusted by loosening the bolts on either side of the motor mount. Removing the bolts allows for easy removal of the blower pulley by pushing the blower assembly up to loosen the belt. Once the belt is removed, the motor sheave can be adjusted to the desired number of turns, ranging from 0 to 6 turns open. Where the demands for the job require high static, McQuay has high-static drives available that deliver nominal airflow up to 2" of static. By referring to the airflow performance tables listed in the installation instructions, proper static pressure and CFM requirements can be dialed in. The scroll housing ( 15 ) and blower provide quiet and efficient airflow. The blower sheave

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is secured by an “H” bushing which firmly secures the pulley to the blower shaft for years of trouble-free opera-tion. The “H” bushing allows for easy removal of the blower pulley from the shaft, as opposed to the use of a set screw, which can score the shaft, creating burrs thatmake blower-pulley removal difficult.

Also inside the blower com-partment are the optional low-ambient control ( 16 ), low-pressure switch ( 17 ), high-pressure switch ( 18 ) and freeze stat refrigerant safety device ( 19 ). The low-ambient control allows for opera-tion of the compressor down to 0 degrees ambient tempera-ture by cycling the outdoor fans on high pressure. The high-pressure switch will shut off the compressors if pressures exceeds, 450 PSIG are detected, this may occur if the outdoor fan motor fails. The low-pressure switch shuts off the com-pressors if low pressure is detected due to loss of charge. The freeze stat protects the compressor if the evaporator coil gets too cold (below freezing) due to low airflow. Each factory-installed option is brazed into the appropriate high or low side and wired appropriately.

Inside the blower compartment the interlaced evaporator can also be viewed. The evaporator uses enhanced fin tech-nology for maximum heat transfer. The cap-tube metering device assures even distribution of refrigerant throughout the evaporator.

Wiring throughout the unit is neatly bundled and routed. Where wire harnesses go through the condenser bulkhead or blower deck, a molded wire harness assembly ( 20 ) provides an air-tight and water-tight seal, and provides strain relief.

Care is also taken to tuck raw edges of insulation behind sheet metal to improve indoor air quality. The furnace compartment

contains the latest furnace technology on the market. The draft inducers ( 21 ) draw the flame from the in-shot burners( 22 ) into the aluminized tubular heat exchanger ( 23 ) for clean, efficient gas heat. Stainless steel heat exchangers can be factory installed for those applications that have high fresh-air requirements, or applications in corrosive environ-ments. Each furnace on units 7.5 tons and above is equipped with a two-stage gas valve ( 24 ), which provides two stages of gas heat input. The first stage operates at 50% of the second stage (full fire). 81% steady state efficiency is maintained on both first and second stage by staging the multiple inducers to

optimize the combustion airflow and maintain a near stoichio-metric burn at each stage.

The direct spark igniter ( 25 ) assures reliable ignition in the most adverse conditions. This is coupled with remote flame sense ( 26 ) to assure that the flame has carried across the entire length of the burner assembly. Gas supply can be routed from the side or up through the base.

Each furnace has the following safety devices to assure con-sistent and reliable operation after ignition: • Pressures switches ( 27 ) to assure adequate combustion

airflow before ignition. • Rollout switches ( 28 ) to assure no obstruction or cracks in

the heat exchanger.• High limit device that protects the furnace from over-tem-

perature problems.

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McQuay Cat 251-1 9


The compressor compartment houses the heartbeat of the unit. The scroll compressor ( 29 ) is known for its long life, and for

reliable, quiet, and efficient operation. The suction and discharge lines are designed with shock loops ( 30 ) to absorb the strain and stress that the starting torque, steady state operation, and shut down cycle impose on the refrigerant tub-ing. Each com-pressor and circuit is inde-pendent for built-in redun-dancy, and each circuit is clearly

marked throughout thesystem. Each unit, 7.5 tons and above, has two stages ofefficient cooling operation, first stage is approximately50% of second stage.

The condenser fan motor ( 31 ) can easily be accessed and maintained through the compressor compartment. The polar-ized plug connection allows the motor to be changed quickly and eliminates the need to snake wires through the unit.

The outdoor coil uses the latest enhanced fin design ( 32 ) for the most effective method of heat transfer. The outdoor coil is protected by optional louvered panels, which allow unob-structed airflow while protecting the unit from both Mother Nature and vandalism.

Each unit is designed for both downflow and horizontal applications ( 33 ) for job configura-tion flexibility. The return air compartment can also contain an economizer ( 34 ). Two economizer models are avail-able, one for downflow appli-cations, and one for horizon-tal applications. Each unit is pre-wired for the economizer to allow quick plug-in instal-lation. The economizer is also available as a factory-installed option. The economizer, which provides free cooling when outdoor condi-tions are suitable and

also provides fresh air to meet local requirements, comes standard with single enthalpy controls. The controls can be upgraded to dual enthalpy easily in the field. The direct drive actuator combined with gear drive dampers has eliminated the need for linkage adjustment in the field. The economizer control has a minimum position setpoint, an outdoor-air set-point, a mix-air setpoint, and a CO2 setpoint. Barometric relief is standard on all economizers. The power exhaust is housed in the barometric relief opening and is easily slipped in with a plug-in assembly. Power Exhaust is easily field-installed ( 36 ).

The McQuay roofcurb ( 35 ) is made for toolless assembly at the jobsite by hinge pin connec-tion on the adjacent curb sides which makes the assembly process quickand easy.

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Selection Procedure Example

To select an MPS Cooling and Heating unit to meet a job requirement, follow this procedure, with example, using data supplied in this specification sheet.1. DETERMINE COOLING AND HEATING REQUIREMENTS

AND SPECIFIC OPERATING CONDITIONS FROM PLANS AND SPECS.Example: Total cooling capacity—106,000 BTUH [31.26 kW]Sensible cooling capacity—82,000 BTUH [24.03 kW]Heating capacity—150,000 BTUH [43.96 kW]*Condenser Entering Air—95°F [35°C] DB*Evaporator Mixed Air Entering— 65°F [18°C] WB; 78°F [26°C] DB*Indoor Air Flow (vertical)—3600 CFM [1699 L/s]*External Static Pressure—.40 in. WG

2. SELECT UNIT TO MEET COOLING REQUIREMENTS.Since total cooling is within the range of a nominal 10 ton [35.2 kW] unit, enter cooling performance table at 95°F [35°C] DB condenser inlet air. Interpolate between 63°F [2°C] and 67°F [19°C] to determine total and sensible capacity and power input for 65°F [18°C] WB evap inlet air at 4000 CFM [1888 L/s] indoor air flow (table basis):Total Capacity = 119,500 BTUH [35.02 kW]Sensible Capacity = 101,200 BTUH [29.66 kW]Power Input (Compressor and Cond. Fans) = 11,650 wattsUse formula [1.10 x CFM x (1 – DR) x (dbE – 80)] in note to determine sensible capacity at 80°F [26.7°C] DB evap- o-rator entering air:Sensible Capacity = 94,230 BTUH [27.62 kW]

3. CORRECT CAPACITIES OF STEP 2 FORACTUAL AIR FLOW.Select factors from airflow correction table at 3600 CFM [1699 L/s] and apply to data obtained in step 2 to obtain gross capacity:Total Capacity, 119,500 x .98 = 117,110 BTUH [34.32 kW]Sensible Capacity, 94,230 x .95 = 89,519 BTUH [26.24 kW]Power Input 11,650 x .99 = 11,534 WattsThese are Gross Capacities, not corrected for blower motor heat or power.

4. DETERMINE BLOWER SPEED AND WATTS TO MEET SYSTEM DESIGN.Enter Indoor Blower performance table at 3600 CFM [1699 L/s]. Total ESP (external static pressure) per the spec of .40 in. includes the system duct and grilles. Add from the table “Component Air Resistance,” .076 for wet coil, .13 for vertical air flow, for a total selection static pressure of .606 (.6) inches of water, and determine:

RPM = 796WATTS = 1,650DRIVE = L (standard 2 H.P. motor)

5. CALCULATE INDOOR BLOWER BTUH HEAT EFFECT FROM MOTOR WATTS, STEP 4.

BTUH = 1,650 x 3.412 = 5,630

6. CALCULATE NET COOLING CAPACITIES, EQUAL TO GROSS CAPACITY, STEP 3, MINUS INDOOR BLOWER MOTOR HEAT.

Net Total Capacity = 117,110 – 5,630 =111,480 BTUH [32.67 kW]

Net Sensible Capacity = 89,519 – 5,630 =83,889 BTUH [24.59 kW]

7. CALCULATE UNIT INPUT AND JOB EER.Total Power Input = 11,534 (step 3) + 1,650

(step 4) = 13,184 Watts

EER = Net Total BTUH [kW] (step 6) = 111,480 = 8.46 Power Input, Watts (above) 13,184

8. SELECT UNIT HEATING CAPACITY.From Physical Data Table read that gas heating output (input rating x efficiency) is:

Heating Capacity = 182,300 BTUH [53.43 kW]

*NOTE: These operating conditions are typical of a commercial applica-tion in a 95°F/79°F [35°C/26°C] design area with indoor design of 76°F [24°C] DB and 50% RH and 10% ventilation air, with the unit roof mounted and centered on the zone it conditions by ducts.


NOTE:Computerized selections at the project’s design conditions can also be obtained from your McQuay Sales Representative.

McQuay Cat 251-1 11

Options

Option Code High andLow Pressure

Low Ambient,Time Delay,Freeze Stat

Stainless SteelHeat Exchanger

Unwired Convenience Outlet,Unfused Service DisconnectHail Guard

TIER IEA xxxxx

TIER IIIAA No Options

TIER IIDH xxxx

FACTORY INSTALLED OPTION CODES FOR MPS-007A THROUGH MPS-012A

Option CodeLow Ambient,Time Delay,Freeze Stat

Stainless SteelHeat Exchanger

TIER I

Unwired Convenience Outlet,Unfused Service Disconnect

TIER IICL x

BP x xTIER III

AA No Options

xx

FACTORY INSTALLED OPTION CODES FOR MPS-015A & MPS-020A

Option Code High andLow Pressure

Low Ambient,Time Delay


StainlessSteel HeatExchanger

TIER IEB x x x x x

TIER IIDB x x x x

TIER IIIAA No Options

FACTORY INSTALLED OPTION CODES FOR MPS-003A THROUGH MPS-005A

Economizer Codes [ ] Designates Metric ConversionsA = No EconomizerB = Economizer with Single Enthalpy“x” indicates factory installed option.

Option Code Low Ambient,Time Delay


StainlessSteel HeatExchanger

TIER Ix xDC x x

x xCG x

No OptionsAA

TIER II

TIER III

FACTORY INSTALLED OPTION CODES FOR MPS-006A

No Economizer Single Enthalpy EconomizerWith Barometric Relief

A xB x

ECONOMIZER SELECTION FOR MPS-005A THROUGH MPS-020ANote: High and Low Pressure Switches and Hail Guards are standard.

12 McQuay Cat 251-1

General Data: MPS-003—MPS-005A

NOM. SIZES 3-5 TONS [10.6-17.6 kW]Model MPS- 003AGCK08E 003AGCK12E 003AGDK08E 003AGDK12ECooling Performance1

Gross Cooling Capacity Btu [kW] 37,400 [10.96] 37,400 [10.96] 37,400 [10.96] 37,400 [10.96]EER/SEER2 11.7/13 11.7/13 11.7/13 11.7/13Nominal CFM/ARI Rated CFM [L/s] 1200/1200 [566/566] 1200/1200 [566/566] 1200/1200 [566/566] 1200/1200 [566/566]ARI Net Cooling Capacity Btu [kW] 36,000 [10.55] 36,000 [10.55] 36,000 [10.55] 36,000 [10.55]Net Sensible Capacity Btu [kW] 26,400 [7.74] 26,400 [7.74] 26,400 [7.74] 26,400 [7.74]

Heating Performance (Package Gas/Electric)4

Heating Input Btu [kW] 80,000 [23.44] 120,000 [35.16] 80,000 [23.44] 120,000 [35.16]Heating Output Btu [kW] 64,800 [18.99] 97,200 [28.48] 64,800 [18.99] 97,200 [28.48]Temperature Rise Range ˚F [˚C] 30-60 [16.7/33.3] 50-80 [27.8/44.4] 30-60 [16.7/33.3] 50-80 [27.8/44.4]

Net Weight lbs. [kg] 543 [246] 543 [246] 543 [246] 543 [246]

Steady State Efficiency (%) 81 81 81 81AFUE % 80 80 80 80

No. Burners 4 6 4 6No. Stages 1 1 1 1Gas Connection Pipe Size in. [mm] 0.5 [12.7] 0.5 [12.7] 0.5 [12.7] 0.5 [12.7]

CompressorQty./Type 1/Scroll 1/Scroll 1/Scroll 1/Scroll

Outdoor Sound Rating (dB)5 78 78 78 78Outdoor Coil—Fin Type Louvered Louvered Louvered LouveredTube Type Rifled Rifled Rifled RifledTube Size in. [mm] OD 0.375 [9.5] 0.375 [9.5] 0.375 [9.5] 0.375 [9.5]Face Area sq. ft. [sq. m] 16.91 [1.57] 16.91 [1.57] 16.91 [1.57] 16.91 [1.57]Rows / FPI [FPcm] 1 / 22 [9] 1 / 22 [9] 1 / 22 [9] 1 / 22 [9]

Net Latent Capacity Btu [kW] 9,600 [2.81] 9,600 [2.81] 9,600 [2.81] 9,600 [2.81]

Indoor Coil—Fin Type Corrugated Corrugated Corrugated CorrugatedTube Type Rifled Rifled Rifled RifledTube Size in. [mm] 0.375 [9.5] 0.375 [9.5] 0.375 [9.5] 0.375 [9.5]Face Area sq. ft. [sq. m] 5.17 [0.48] 5.17 [0.48] 5.17 [0.48] 5.17 [0.48]Rows / FPI [FPcm] 2 / 17 [7] 2 / 17 [7] 2 / 17 [7] 2 / 17 [7]Refrigerant Control TX Valves TX Valves TX Valves TX ValvesDrain Connection No./Size in. [mm] 1/0.75 [19.05] 1/0.75 [19.05] 1/0.75 [19.05] 1/0.75 [19.05]

Outdoor Fan—Type Propeller Propeller Propeller PropellerNo. Used/Diameter in. [mm] 1/24 [609.6] 1/24 [609.6] 1/24 [609.6] 1/24 [609.6]Drive Type/No. Speeds Direct/1 Direct/1 Direct/1 Direct/1CFM [L/s] 3680 [1737] 3680 [1737] 3680 [1737] 3680 [1737]No. Motors/HP 1 at 1/3 HP 1 at 1/3 HP 1 at 1/3 HP 1 at 1/3 HPMotor RPM 1075 1075 1075 1075

Indoor Fan—Type FC Centrifugal FC Centrifugal FC Centrifugal FC CentrifugalNo. Used/Diameter in. [mm] 1/10x10 [254x254] 1/10x10 [254x254] 1/10x10 [254x254] 1/10x10 [254x254]Drive Type/No. Speeds Direct/3 Direct/3 Direct/3 Direct/3No. Motors 1 1 1 1Motor HP 1/2 1/2 1/2 1/2 Motor RPM 1075 1075 1075 1075Motor Frame Size 48 48 48 48

Filter—Type Disposable Disposable Disposable DisposableFurnished Yes Yes Yes Yes(No.) Size Recommended in. [mm] (1)1x16x25 [25x406x635] (1)1x16x25 [25x406x635] (1)1x16x25 [25x406x635] (1)1x16x25 [25x406x635]

(1)1x16x25 [25x406x635] (1)1x16x25 [25x406x635] (1)1x16x25 [25x406x635] (1)1x16x25 [25x406x635]

Weights

Ship Weight lbs. [kg] 550 [249] 550 [249] 550 [249] 550 [249]

Net System Power kW 3.08 3.08 3.08 3.08

Refrigerant Charge Oz. (Sys. 1/Sys. 2) [g] 93 [2637] 93 [2637] 93 [2637] 93 [2637]

CONTINUED

See Page 33 for Notes. [ ] Designates Metric Conversions

McQuay Cat 251-1 13


Model MPS- 004AGCK10E 004AGCK13E 004AGDK10E 004AGDK13ECooling Performance1

Gross Cooling Capacity Btu [kW] 49,000 [14.36] 49,000 [14.36] 49,000 [14.36] 49,000 [14.36]EER/SEER2 11.4/13.1 11.4/13.1 11.4/13.1 11.4/13.1Nominal CFM/ARI Rated CFM [L/s] 1600/1550 [755/731] 1600/1550 [755/731] 1600/1550 [755/731] 1600/1550 [755/731]ARI Net Cooling Capacity Btu [kW] 47,000 [13.77] 47,000 [13.77] 47,000 [13.77] 47,000 [13.77]Net Sensible Capacity Btu [kW] 33,600 [9.84] 33,600 [9.84] 33,600 [9.84] 33,600 [9.84]



Net Weight lbs. [kg] 580 [263] 585 [265] 580 [263] 585 [265]








Indoor Fan—Type FC Centrifugal FC Centrifugal FC Centrifugal FC CentrifugalNo. Used/Diameter in. [mm] 1/10x10 [254x254] 1/10x10 [254x254] 1/10x10 [254x254] 1/10x10 [254x254]Drive Type/No. Speeds Direct/3 Direct/3 Direct/3 Direct/3No. Motors 1 1 1 1Motor HP 1/2 1/2 1/2 1/2 Motor RPM 1075 1075 1075 1075Motor Frame Size 48 48 48 48



Weights


Net System Power kW 4.15 4.15 4.15 4.15


CONTINUED

NOM. SIZES 3-5 TONS [10.6-17.6 kW]


14 McQuay Cat 251-1


Model MPS- 005AGCM10E 005AGCM13E 005AGDM10E 005AGDM13ECooling Performance1

Gross Cooling Capacity Btu [kW] 60,000 [17.58] 60,000 [17.58] 60,000 [17.58] 60,000 [17.58]EER/SEER2 11.6/13 11.6/13 11.6/13 11.6/13Nominal CFM/ARI Rated CFM [L/s] 2000/1900 [897/897] 2000/1900 [897/897] 2000/1900 [897/897] 2000/1900 [897/897]ARI Net Cooling Capacity Btu [kW] 58,000 [16.99] 58,000 [16.99] 58,000 [16.99] 58,000 [16.99]Net Sensible Capacity Btu [kW] 42,000 [12.31] 42,000 [12.31] 42,000 [12.31] 42,000 [12.31]



Net Weight lbs. [kg] 590 [268] 590 [268] 590 [268] 590 [268]








Indoor Fan—Type FC Centrifugal FC Centrifugal FC Centrifugal FC CentrifugalNo. Used/Diameter in. [mm] 1/10x10 [254x254] 1/10x10 [254x254] 1/10x10 [254x254] 1/10x10 [254x254]Drive Type/No. Speeds Belt/Variable Belt/Variable Belt/Variable Belt/VariableNo. Motors 1 1 1 1Motor HP 1 1 1 1 Motor RPM 1725 1725 1725 1725Motor Frame Size 56 56 56 56



Weights


Net System Power kW 5 5 5 5


NOM. SIZES 3-5 TONS [10.6-17.6 kW]


McQuay Cat 251-1 15

General Data: MPS-006A


Model MPS- 006AGCL10E 006AGCL13E 006AGCM10E 006AGCM13ECooling Performance1

Gross Cooling Capacity Btu [kW] 75,000 [22] 75,000 [22] 75,000 [22] 75,000 [22]EER/SEER2 10.3/NA 10.3/NA 10.3/NA 10.3/NANominal CFM/ARI Rated CFM [L/s] 2400/2400 [1133/1133] 2400/2400 [1133/1133] 2400/2400 [1133/1133] 2400/2400 [1133/1133]ARI Net Cooling Capacity Btu [kW] 72,000 [21.1] 72,000 [21.1] 72,000 [21.1] 72,000 [21.1]Net Sensible Capacity Btu [kW] 53,000 [15.5] 53,000 [15.5] 53,000 [15.5] 53,000 [15.5]

Integrated Part Load Value3 11.5 11.5 11.5 11.5



Net Weight lbs. [kg] 608 [276] 608 [276] 615 [279] 615 [279]






Indoor Coil—Fin Type Louvered Louvered Louvered LouveredTube Type Rifled Rifled Rifled RifledTube Size in. [mm] 0.375 [9.5] 0.375 [9.5] 0.375 [9.5] 0.375 [9.5]Face Area sq. ft. [sq. m] 6.5 [0.6] 6.5 [0.6] 6.5 [0.6] 6.5 [0.6]Rows / FPI [FPcm] 4 / 12 [5] 4 / 12 [5] 4 / 12 [5] 4 / 12 [5]Refrigerant Control Capillary Tubes Capillary Tubes Capillary Tubes Capillary TubesDrain Connection No./Size in. [mm] 1/1 [25.4] 1/1 [25.4] 1/1 [25.4] 1/1 [25.4]


Indoor Fan—Type FC Centrifugal FC Centrifugal FC Centrifugal FC CentrifugalNo. Used/Diameter in. [mm] 1/11x12 [279.4x304.8] 1/11x12 [279.4x304.8] 1/11x12 [279.4x304.8] 1/11x12 [279.4x304.8]Drive Type/No. Speeds Belt/Variable Belt/Variable Belt/Variable Belt/VariableNo. Motors 1 1 1 1Motor HP 1 1/2 1 1/2 1 1/2 1 1/2Motor RPM 1725 1725 1725 1725Motor Frame Size 56 56 56 56


Refrigerant Charge Oz. (Sys. 1/Sys. 2) [g] 88/88 [2495/2495] 88/88 [2495/2495] 88/88 [2495/2495] 88/88 [2495/2495]Weights


Net System Power kW 7 7 7 7

CONTINUED

NOM. SIZES 6 TONS [21.1 kW] ASHRAE 90.1-2004 COMPLIANT MODELS

16 McQuay Cat 251-1



Model MPS- 006AGDL10E 006AGDL13E 006AGDM10E 006AGDM13ECooling Performance1

Gross Cooling Capacity Btu [kW] 75,000 [22] 75,000 [22] 75,000 [22] 75,000 [22]EER/SEER2 10.3/NA 10.3/NA 10.3/NA 10.3/NANominal CFM/ARI Rated CFM [L/s] 2400/2400 [1133/1133] 2400/2400 [1133/1133] 2400/2400 [1133/1133] 2400/2400 [1133/1133]ARI Net Cooling Capacity Btu [kW] 72,000 [21.1] 72,000 [21.1] 72,000 [21.1] 72,000 [21.1]Net Sensible Capacity Btu [kW] 53,000 [15.5] 53,000 [15.5] 53,000 [15.5] 53,000 [15.5]

Net System Power kW 7 7 7 7Heating Performance (Package Gas/Electric)4


Net Weight lbs. [kg] 608 [276] 608 [276] 608 [276] 608 [276]








Indoor Fan—Type FC Centrifugal FC Centrifugal FC Centrifugal FC CentrifugalNo. Used/Diameter in. [mm] 1/11x12 [279.4x304.8] 1/11x12 [279.4x304.8] 1/11x12 [279.4x304.8] 1/11x12 [279.4x304.8]Drive Type/No. Speeds Belt/Variable Belt/Variable Belt/Variable Belt/VariableNo. Motors 1 1 1 1Motor HP 1 1/2 1 1/2 1 1/2 1 1/2Motor RPM 1725 1725 1725 1725Motor Frame Size 56 56 56 56





CONTINUED


McQuay Cat 251-1 17



Model MPS- 006AGYL13ECooling Performance1

Gross Cooling Capacity Btu [kW] 75,000 [22]EER/SEER2 10.3/NANominal CFM/ARI Rated CFM [L/s] 2400/2400 [1133/1133]ARI Net Cooling Capacity Btu [kW] 72,000 [21.1]Net Sensible Capacity Btu [kW] 53,000 [15.5]

Net System Power kW 7Heating Performance (Package Gas/Electric)4

Heating Input Btu [kW] 135,000 [39.6]Heating Output Btu [kW] 109,400 [32.1]Temperature Rise Range ˚F [˚C] 30-60 [16.7/33.3]

Net Weight lbs. [kg] 608 [276]

Steady State Efficiency (%) 81AFUE % 80

No. Burners 6No. Stages 1Gas Connection Pipe Size in. [mm] 0.5 [12.7]

CompressorQty./Type 2/Scroll

Outdoor Sound Rating (dB)5 83Outdoor Coil—Fin Type LouveredTube Type RifledTube Size in. [mm] OD 0.375 [9.5]Face Area sq. ft. [sq. m] 16.56 [1.54]Rows / FPI [FPcm] 2 / 22 [9]

Net Latent Capacity Btu [kW] 19,000 [5.6]

Indoor Coil—Fin Type LouveredTube Type RifledTube Size in. [mm] 0.375 [9.5]Face Area sq. ft. [sq. m] 6.5 [0.6]Rows / FPI [FPcm] 4 / 12 [5]Refrigerant Control Capillary TubesDrain Connection No./Size in. [mm] 1/1 [25.4]

Outdoor Fan—Type PropellerNo. Used/Diameter in. [mm] 1/24 [609.6]Drive Type/No. Speeds Direct/1CFM [L/s] 4000 [1888]No. Motors/HP 1 at 1/3 HPMotor RPM 1075

Indoor Fan—Type FC CentrifugalNo. Used/Diameter in. [mm] 1/11x12 [279.4x304.8]Drive Type/No. Speeds Belt/VariableNo. Motors 1Motor HP 1 1/2Motor RPM 1725Motor Frame Size 56

Filter—Type DisposableFurnished Yes(No.) Size Recommended in. [mm] (4)2x16x16 [51x406x406]

Refrigerant Charge Oz. (Sys. 1/Sys. 2) [g] 88/88 [2495/2495]Weights

Ship Weight lbs. [kg] 615 [279]

Integrated Part Load Value3 11.5

006AGYM13E

75,000 [22]10.3/NA

2400/2400 [1133/1133]72,000 [21.1]53,000 [15.5]

7

135,000 [39.6]109,400 [32.1]

30-60 [16.7/33.3]

608 [276]

8180

61

0.5 [12.7]

2/Scroll83

LouveredRifled

0.375 [9.5]16.56 [1.54]

2 / 22 [9]

19,000 [5.6]

LouveredRifled

0.375 [9.5]6.5 [0.6]4 / 12 [5]

Capillary Tubes1/1 [25.4]Propeller

1/24 [609.6]Direct/1

4000 [1888]1 at 1/3 HP

1075FC Centrifugal

1/11x12 [279.4x304.8]Belt/Variable

11 1/2172556

DisposableYes

(4)2x16x16 [51x406x406]88/88 [2495/2495]

615 [279]

11.5


18 McQuay Cat 251-1

General Data: MPS-007A—MPS-012A



Gross Cooling Capacity Btu [kW] 93000 [27.2] 93000 [27.2] 93000 [27.2] 93000 [27.2]EER/SEER2 10.3/NA 10.3/NA 10.3/NANominal CFM/ARI Rated CFM [L/s] 3000/3200 [1416/1510] 3000/3200 [1416/1510] 3000/3200 [1416/1510] 3000/3200 [1416/1510]ARI Net Cooling Capacity Btu [kW] 90000 [26.4] 90000 [26.4] 90000 [26.4] 90000 [26.4]Net Sensible Capacity Btu [kW] 68000 [19.9] 68000 [19.9] 68000 [19.9] 68000 [19.9]

Net System Power kW 8.7 8.7 8.7 8.7Heating Performance (Package Gas/Electric)4

Heating Input Btu [kW] (1st Stage / 2nd Stage) 75000/150000 [22/44] 112500/225000 [33/65.9] 75000/150000 [22/44] 112500/225000 [33/65.9]Heating Output Btu [kW] (1st Stage / 2nd Stage) 60750/121500 [17.8/35.6] 91125/182250 [26.7/53.4] 60750/121500 [17.8/35.6] 91125/182250 [26.7/53.4]Temperature Rise Range ˚F [˚C] 25-55 [13.9-30.6] 40-70 [22.2-38.9] 25-55 [13.9-30.6] 40-70 [22.2-38.9]

Net Weight lbs. [kg] 1048 [475] 1084 [492] 1056 [479] 1092 [495]

Steady State Efficiency (%) 81 81 81 81

Integrated Part Load Value3 11 11 11 11



Outdoor Sound Rating (dB)5 88 88 88 88Outdoor Coil—Fin Type Louvered Louvered Louvered LouveredTube Type Smooth Smooth Smooth SmoothTube Size in. [mm] OD 0.375 [9.5] 0.375 [9.5] 0.375 [9.5] 0.375 [9.5]Face Area sq. ft. [sq. m] 11.25 [1.05] 11.25 [1.05] 11.25 [1.05] 11.25 [1.05]Rows / FPI [FPcm] 2 / 18 [7] 2 / 18 [7] 2 / 18 [7] 2 / 18 [7]

Net Latent Capacity Btu [kW] 22000 [6.4] 22000 [6.4] 22000 [6.4] 22000 [6.4]



Indoor Fan—Type FC Centrifugal FC Centrifugal FC Centrifugal FC CentrifugalNo. Used/Diameter in. [mm] 1/15x15 [381x381] 1/15x15 [381x381] 1/15x15 [381x381] 1/15x15 [381x381]Drive Type/No. Speeds Belt/Variable Belt/Variable Belt/Variable Belt/VariableNo. Motors 1 1 1 1Motor HP 2 2 3 3Motor RPM 1725 1725 1725 1725Motor Frame Size 56 56 56 56




CONTINUED

10.3/NA

NOM. SIZES 7.5-12.5 TONS [26.4-44.0 kW] ASHRAE 90.1-2004 COMPLIANT MODELS

McQuay Cat 251-1 19




Gross Cooling Capacity Btu [kW] 93000 [27.2] 93000 [27.2] 93000 [27.2] 93000 [27.2]EER/SEER2 10.3/NA 10.3/NA 10.3/NA 10.3/NANominal CFM/ARI Rated CFM [L/s] 3000/3200 [1416/1510] 3000/3200 [1416/1510] 3000/3200 [1416/1510] 3000/3200 [1416/1510]ARI Net Cooling Capacity Btu [kW] 90000 [26.4] 90000 [26.4] 90000 [26.4] 90000 [26.4]Net Sensible Capacity Btu [kW] 68000 [19.9] 68000 [19.9] 68000 [19.9] 68000 [19.9]


Heating Input Btu [kW] (1st Stage / 2nd Stage) 75000/150000 [22/44] 112500/225000 [33/65.9] 75000/150000 [22/44] 112500/225000 [33/65.9]Heating Output Btu [kW] (1st Stage / 2nd Stage) 60750/121500 [17.8/35.6] 91125/182250 [26.7/53.4] 60750/121500 [17.8/35.6] 91125/182250 [26.7/53.4]Temperature Rise Range ˚F [˚C] 25-55 [13.9-30.6] 40-70 [22.2-38.9] 25-55 [13.9-30.6] 40-70 [22.2-38.9]

Net Weight lbs. [kg] 1048 [475] 1084 [492] 1056 [479] 1092 [495]





Outdoor Sound Rating (dB)5 88 88 88 88Outdoor Coil—Fin Type Louvered Louvered Louvered LouveredTube Type Smooth Smooth Smooth SmoothTube Size in. [mm] OD 0.375 [9.5] 0.375 [9.5] 0.375 [9.5] 0.375 [9.5]Face Area sq. ft. [sq. m] 11.25 [1.05] 11.25 [1.05] 11.25 [1.05] 11.25 [1.05]Rows / FPI [FPcm] 2 / 18 [7] 2 / 18 [7] 2 / 18 [7] 2 / 18 [7]








CONTINUED


20 McQuay Cat 251-1



Model MPS- 007AGYL22E 007AGYM22E 008AGCL15E 008AGCL22ECooling Performance1



Heating Input Btu [kW] (1st Stage / 2nd Stage) 112500/225000 [33/65.9] 112500/225000 [33/65.9] 75000/150000 [22/44] 112500/225000 [33/65.9]Heating Output Btu [kW] (1st Stage / 2nd Stage) 91125/182250 [26.7/53.4] 91125/182250 [26.7/53.4] 60750/121500 [17.8/35.6] 91125/182250 [26.7/53.4]Temperature Rise Range ˚F [˚C] 40-70 [22.2-38.9] 40-70 [22.2-38.9] 15-45 [8.3-25] 25-55 [13.9-30.6]

Net Weight lbs. [kg] 1034 [469] 1092 [495] 1012 [459] 1012 [459]





Outdoor Sound Rating (dB)5 88 88 88 88Outdoor Coil—Fin Type Louvered Louvered Louvered LouveredTube Type Smooth Smooth Rifled RifledTube Size in. [mm] OD 0.375 [9.5] 0.375 [9.5] 0.375 [9.5] 0.375 [9.5]Face Area sq. ft. [sq. m] 11.25 [1.05] 11.25 [1.05] 13.5 [1.25] 13.5 [1.25]Rows / FPI [FPcm] 2 / 18 [7] 2 / 18 [7] 2 / 18 [7] 2 / 18 [7]

Net Latent Capacity Btu [kW] 22000 [6.4] 22000 [6.4] 24000 [7] 24000 [7]







CONTINUED


McQuay Cat 251-1 21



Model MPS- 008AGCM15E 008AGCM22E 008AGDL15E 008AGDL22ECooling Performance1



Heating Input Btu [kW] (1st Stage / 2nd Stage) 75000/150000 [22/44] 112500/225000 [33/65.9] 75000/150000 [22/44] 112500/225000 [33/65.9]Heating Output Btu [kW] (1st Stage / 2nd Stage) 60750/121500 [17.8/35.6] 91125/182250 [26.7/53.4] 60750/121500 [17.8/35.6] 91125/182250 [26.7/53.4]Temperature Rise Range ˚F [˚C] 15-45 [8.3-25] 25-55 [13.9-30.6] 15-45 [8.3-25] 25-55 [13.9-30.6]

Net Weight lbs. [kg] 1020 [463] 1020 [463] 1012 [459] 1012 [459]






Net Latent Capacity Btu [kW] 24000 [7] 24000 [7] 24000 [7] 24000 [7]







CONTINUED


22 McQuay Cat 251-1



Model MPS- 008AGDM15E 008AGDM22E 008AGYL22E 008AGYM22ECooling Performance1



Heating Input Btu [kW] (1st Stage / 2nd Stage) 75000/150000 [22/44] 112500/225000 [33/65.9] 112500/225000 [33/65.9] 112500/225000 [33/65.9]Heating Output Btu [kW] (1st Stage / 2nd Stage) 60750/121500 [17.8/35.6] 91125/182250 [26.7/53.4] 91125/182250 [26.7/53.4] 91125/182250 [26.7/53.4]Temperature Rise Range ˚F [˚C] 15-45 [8.3-25] 25-55 [13.9-30.6] 25-55 [13.9-30.6] 25-55 [13.9-30.6]

Net Weight lbs. [kg] 1020 [463] 1020 [463] 1012 [459] 1020 [463]






Net Latent Capacity Btu [kW] 24000 [7] 24000 [7] 24000 [7] 24000 [7]







CONTINUED


McQuay Cat 251-1 23







Net Weight lbs. [kg] 1125 [510] 1161 [527] 1151 [522] 1187 [538]





Outdoor Sound Rating (dB)5 88 88 88 88Outdoor Coil—Fin Type Louvered Louvered Louvered LouveredTube Type Rifled Rifled Rifled RifledTube Size in. [mm] OD 0.375 [9.5] 0.375 [9.5] 0.375 [9.5] 0.375 [9.5]Face Area sq. ft. [sq. m] 27 [2.51] 27 [2.51] 27 [2.51] 27 [2.51]Rows / FPI [FPcm] 2 / 18 [7] 2 / 18 [7] 2 / 18 [7] 2 / 18 [7]








CONTINUED


24 McQuay Cat 251-1







Net Weight lbs. [kg] 1125 [510] 1161 [527] 1151 [522] 1187 [538]













CONTINUED


McQuay Cat 251-1 25



Model MPS- 010AGYL22E 012AGCL15E 012AGCL25ECooling Performance1

Gross Cooling Capacity Btu [kW] 126000 [36.9] 154000 [45.1] 154000 [45.1]EER/SEER2 10.3/NA 9.7/NA 9.7/NANominal CFM/ARI Rated CFM [L/s] 4000/4000 [1888/1888] 4900/4300 [2312/2029] 4900/4300 [2312/2029]ARI Net Cooling Capacity Btu [kW] 120000 [35.2] 146000 [42.8] 146000 [42.8]Net Sensible Capacity Btu [kW] 88000 [25.8] 104000 [30.5] 104000 [30.5]

Net System Power kW 11.6 15.1 15.1Heating Performance (Package Gas/Electric)4

Heating Input Btu [kW] (1st Stage / 2nd Stage) 112500/225000 [33/65.9] 75000/150000 [22/44] 126000/252000 [36.9/73.8]Heating Output Btu [kW] (1st Stage / 2nd Stage) 91125/182250 [26.7/53.4] 60750/121500 [17.8/35.6] 102000/204000 [29.9/59.8]Temperature Rise Range ˚F [˚C] 25-55 [13.9-30.6] 15-45 [8.3-25] 25-55 [13.9-30.6]

Net Weight lbs. [kg] 1161 [527] 1142 [518] 1142 [518]

Steady State Efficiency (%) 81 81 81

Integrated Part Load Value3 10.6 10 10

No. Burners 9 6 9No. Stages 2 2 2Gas Connection Pipe Size in. [mm] 0.75 [19.05] 0.5 [12.7] 0.75 [19.05]

CompressorQty./Type 2/Scroll 2/Scroll 2/Scroll

Outdoor Sound Rating (dB)5 88 88 88Outdoor Coil—Fin Type Louvered Louvered LouveredTube Type Rifled Rifled RifledTube Size in. [mm] OD 0.375 [9.5] 0.375 [9.5] 0.375 [9.5]Face Area sq. ft. [sq. m] 27 [2.51] 27 [2.51] 27 [2.51]Rows / FPI [FPcm] 2 / 18 [7] 2 / 22 [9] 2 / 22 [9]

Net Latent Capacity Btu [kW] 32000 [9.4] 42000 [12.3] 42000 [12.3]

Indoor Coil—Fin Type Louvered Louvered LouveredTube Type Rifled Rifled RifledTube Size in. [mm] 0.375 [9.5] 0.375 [9.5] 0.375 [9.5]Face Area sq. ft. [sq. m] 13.5 [1.25] 13.5 [1.25] 13.5 [1.25]Rows / FPI [FPcm] 3 / 18 [7] 4 / 15 [6] 4 / 15 [6]Refrigerant Control Capillary Tubes Orifices OrificesDrain Connection No./Size in. [mm] 1/1 [25.4] 1/1 [25.4] 1/1 [25.4]

Outdoor Fan—Type Propeller Propeller PropellerNo. Used/Diameter in. [mm] 2/24 [609.6] 2/24 [609.6] 2/24 [609.6]Drive Type/No. Speeds Direct/1 Direct/1 Direct/1CFM [L/s] 8000 [3775] 8000 [3775] 8000 [3775]No. Motors/HP 2 at 1/3 HP 2 at 1/3 HP 2 at 1/3 HPMotor RPM 1075 1075 1075

Indoor Fan—Type FC Centrifugal FC Centrifugal FC CentrifugalNo. Used/Diameter in. [mm] 1/15x15 [381x381] 1/15x15 [381x381] 1/15x15 [381x381]Drive Type/No. Speeds Belt/Variable Belt/Variable Belt/VariableNo. Motors 1 1 1Motor HP 2 3 3Motor RPM 1725 1725 1725Motor Frame Size 56 56 56

Filter—Type Disposable Disposable DisposableFurnished Yes Yes Yes(No.) Size Recommended in. [mm] (6)2x18x18 [51x457x457] (6)2x18x18 [51x457x457] (6)2x18x18 [51x457x457]

Refrigerant Charge Oz. (Sys. 1/Sys. 2) [g] 173/173 [4905/4905] 192/192 [5443/5443] 192/192 [5443/5443]Weights

Ship Weight lbs. [kg] 1198 [543] 1179 [535] 1179 [535]

010AGYM22E

126000 [36.9]10.3/NA

4000/4000 [1888/1888]120000 [35.2]88000 [25.8]

11.6

112500/225000 [33/65.9]91125/182250 [26.7/53.4]

25-55 [13.9-30.6]

1187 [538]

81

10.6

92

0.75 [19.05]

2/Scroll88

LouveredRifled

0.375 [9.5]27 [2.51]2 / 18 [7]

32000 [9.4]

LouveredRifled

0.375 [9.5]13.5 [1.25]3 / 18 [7]

Capillary Tubes1/1 [25.4]Propeller

2/24 [609.6]Direct/1

8000 [3775]2 at 1/3 HP

1075FC Centrifugal

1/15x15 [381x381]Belt/Variable

13

172556

DisposableYes

(6)2x18x18 [51x457x457]173/173 [4905/4905]

1224 [555]

CONTINUED


26 McQuay Cat 251-1



Model MPS- 012AGCM15E 012AGDL15E 012AGDL25ECooling Performance1

Gross Cooling Capacity Btu [kW] 154000 [45.1] 154000 [45.1] 154000 [45.1]EER/SEER2 9.7/NA 9.7/NA 9.7/NANominal CFM/ARI Rated CFM [L/s] 4900/4300 [2312/2029] 4900/4300 [2312/2029] 4900/4300 [2312/2029]ARI Net Cooling Capacity Btu [kW] 146000 [42.8] 146000 [42.8] 146000 [42.8]Net Sensible Capacity Btu [kW] 104000 [30.5] 104000 [30.5] 104000 [30.5]

Net System Power kW 15.1 15.1 15.1Heating Performance (Package Gas/Electric)4

Heating Input Btu [kW] (1st Stage / 2nd Stage) 75000/150000 [22/44] 75000/150000 [22/44] 126000/252000 [36.9/73.8]Heating Output Btu [kW] (1st Stage / 2nd Stage) 60750/121500 [17.8/35.6] 60750/121500 [17.8/35.6] 102000/204000 [29.9/59.8]Temperature Rise Range ˚F [˚C] 15-45 [8.3-25] 15-45 [8.3-25] 25-55 [13.9-30.6]

Net Weight lbs. [kg] 1168 [530] 1142 [518] 1142 [518]

Steady State Efficiency (%) 81 81 81

Integrated Part Load Value3 10 10 10

No. Burners 6 6 9No. Stages 2 2 2Gas Connection Pipe Size in. [mm] 0.5 [12.7] 0.5 [12.7] 0.75 [19.05]

CompressorQty./Type 2/Scroll 2/Scroll 2/Scroll

Outdoor Sound Rating (dB)5 88 88 88Outdoor Coil—Fin Type Louvered Louvered LouveredTube Type Rifled Rifled RifledTube Size in. [mm] OD 0.375 [9.5] 0.375 [9.5] 0.375 [9.5]Face Area sq. ft. [sq. m] 27 [2.51] 27 [2.51] 27 [2.51]Rows / FPI [FPcm] 2 / 22 [9] 2 / 22 [9] 2 / 22 [9]

Net Latent Capacity Btu [kW] 42000 [12.3] 42000 [12.3] 42000 [12.3]

Indoor Coil—Fin Type Louvered Louvered LouveredTube Type Rifled Rifled RifledTube Size in. [mm] 0.375 [9.5] 0.375 [9.5] 0.375 [9.5]Face Area sq. ft. [sq. m] 13.5 [1.25] 13.5 [1.25] 13.5 [1.25]Rows / FPI [FPcm] 4 / 15 [6] 4 / 15 [6] 4 / 15 [6]Refrigerant Control Orifices Orifices OrificesDrain Connection No./Size in. [mm] 1/1 [25.4] 1/1 [25.4] 1/1 [25.4]

Outdoor Fan—Type Propeller Propeller PropellerNo. Used/Diameter in. [mm] 2/24 [609.6] 2/24 [609.6] 2/24 [609.6]Drive Type/No. Speeds Direct/1 Direct/1 Direct/1CFM [L/s] 8000 [3775] 8000 [3775] 8000 [3775]No. Motors/HP 2 at 1/3 HP 2 at 1/3 HP 2 at 1/3 HPMotor RPM 1075 1075 1075

Indoor Fan—Type FC Centrifugal FC Centrifugal FC CentrifugalNo. Used/Diameter in. [mm] 1/15x15 [381x381] 1/15x15 [381x381] 1/15x15 [381x381]Drive Type/No. Speeds Belt/Variable Belt/Variable Belt/VariableNo. Motors 1 1 1Motor HP 5 3 3Motor RPM 1725 1725 1725Motor Frame Size 184 56 56

Filter—Type Disposable Disposable DisposableFurnished Yes Yes Yes(No.) Size Recommended in. [mm] (6)2x18x18 [51x457x457] (6)2x18x18 [51x457x457] (6)2x18x18 [51x457x457]

Refrigerant Charge Oz. (Sys. 1/Sys. 2) [g] 192/192 [5443/5443] 192/192 [5443/5443] 192/192 [5443/5443]Weights

Ship Weight lbs. [kg] 1205 [547] 1179 [535] 1179 [535]

012AGCM25E

154000 [45.1]9.7/NA

4900/4300 [2312/2029]146000 [42.8]104000 [30.5]

15.1

126000/252000 [36.9/73.8]102000/204000 [29.9/59.8]

25-55 [13.9-30.6]

1168 [530]

81

10

92

0.75 [19.05]

2/Scroll88

LouveredRifled

0.375 [9.5]27 [2.51]2 / 22 [9]

42000 [12.3]

LouveredRifled

0.375 [9.5]13.5 [1.25]4 / 15 [6]Orifices

1/1 [25.4]Propeller

2/24 [609.6]Direct/1

8000 [3775]2 at 1/3 HP

1075FC Centrifugal


15

1725184

DisposableYes

(6)2x18x18 [51x457x457]192/192 [5443/5443]

1205 [547]

CONTINUED


McQuay Cat 251-1 27



Model MPS- 012AGDM15E 012AGYL25ECooling Performance1

Gross Cooling Capacity Btu [kW] 154000 [45.1] 154000 [45.1]EER/SEER2 9.7/NA 9.7/NANominal CFM/ARI Rated CFM [L/s] 4900/4300 [2312/2029] 4900/4300 [2312/2029]ARI Net Cooling Capacity Btu [kW] 146000 [42.8] 146000 [42.8]Net Sensible Capacity Btu [kW] 104000 [30.5] 104000 [30.5]

Net System Power kW 15.1 15.1Heating Performance (Package Gas/Electric)4

Heating Input Btu [kW] (1st Stage / 2nd Stage) 75000/150000 [22/44] 126000/252000 [36.9/73.8]Heating Output Btu [kW] (1st Stage / 2nd Stage) 60750/121500 [17.8/35.6] 102000/204000 [29.9/59.8]Temperature Rise Range ˚F [˚C] 15-45 [8.3-25] 25-55 [13.9-30.6]

Net Weight lbs. [kg] 1168 [530] 1142 [518]

Steady State Efficiency (%) 81 81

Integrated Part Load Value3 10 10

No. Burners 6 9No. Stages 2 2Gas Connection Pipe Size in. [mm] 0.5 [12.7] 0.75 [19.05]

CompressorQty./Type 2/Scroll 2/Scroll

Outdoor Sound Rating (dB)5 88 88Outdoor Coil—Fin Type Louvered LouveredTube Type Rifled RifledTube Size in. [mm] OD 0.375 [9.5] 0.375 [9.5]Face Area sq. ft. [sq. m] 27 [2.51] 27 [2.51]Rows / FPI [FPcm] 2 / 22 [9] 2 / 22 [9]

Net Latent Capacity Btu [kW] 42000 [12.3] 42000 [12.3]

Indoor Coil—Fin Type Louvered LouveredTube Type Rifled RifledTube Size in. [mm] 0.375 [9.5] 0.375 [9.5]Face Area sq. ft. [sq. m] 13.5 [1.25] 13.5 [1.25]Rows / FPI [FPcm] 4 / 15 [6] 4 / 15 [6]Refrigerant Control Orifices OrificesDrain Connection No./Size in. [mm] 1/1 [25.4] 1/1 [25.4]

Outdoor Fan—Type Propeller PropellerNo. Used/Diameter in. [mm] 2/24 [609.6] 2/24 [609.6]Drive Type/No. Speeds Direct/1 Direct/1CFM [L/s] 8000 [3775] 8000 [3775]No. Motors/HP 2 at 1/3 HP 2 at 1/3 HPMotor RPM 1075 1075

Indoor Fan—Type FC Centrifugal FC CentrifugalNo. Used/Diameter in. [mm] 1/15x15 [381x381] 1/15x15 [381x381]Drive Type/No. Speeds Belt/Variable Belt/VariableNo. Motors 1 1Motor HP 5 3Motor RPM 1725 1725Motor Frame Size 184 56

Filter—Type Disposable DisposableFurnished Yes Yes(No.) Size Recommended in. [mm] (6)2x18x18 [51x457x457] (6)2x18x18 [51x457x457]

Refrigerant Charge Oz. (Sys. 1/Sys. 2) [g] 192/192 [5443/5443] 192/192 [5443/5443]Weights

Ship Weight lbs. [kg] 1209 [548] 1179 [535]

012AGYM25E

154000 [45.1]9.7/NA

4900/4300 [2312/2029]146000 [42.8]104000 [30.5]

15.1

126000/252000 [36.9/73.8]102000/204000 [29.9/59.8]

25-55 [13.9-30.6]

1168 [530]

81

10

92

0.75 [19.05]

2/Scroll88

LouveredRifled

0.375 [9.5]27 [2.51]2 / 22 [9]

42000 [12.3]

LouveredRifled

0.375 [9.5]13.5 [1.25]4 / 15 [6]Orifices

1/1 [25.4]Propeller

2/24 [609.6]Direct/1

8000 [3775]2 at 1/3 HP

1075FC Centrifugal


15

1725184

DisposableYes

(6)2x18x18 [51x457x457]192/192 [5443/5443]

1205 [547]

012AGDM25E

154000 [45.1]9.7/NA

4900/4300 [2312/2029]146000 [42.8]104000 [30.5]

15.1

126000/252000 [36.9/73.8]102000/204000 [29.9/59.8]

25-55 [13.9-30.6]

1168 [530]

81

10

92

0.75 [19.05]

2/Scroll88

LouveredRifled

0.375 [9.5]27 [2.51]2 / 22 [9]

42000 [12.3]

LouveredRifled

0.375 [9.5]13.5 [1.25]4 / 15 [6]Orifices

1/1 [25.4]Propeller

2/24 [609.6]Direct/1

8000 [3775]2 at 1/3 HP

1075FC Centrifugal


15

1725184

DisposableYes

(6)2x18x18 [51x457x457]192/192 [5443/5443]

1209 [548]


28 McQuay Cat 251-1




Gross Cooling Capacity Btu [kW] 188,000 [55.1] 188,000 [55.1] 188,000 [55.1] 188,000 [55.1]EER/SEER2 10.2/NA 10.2/NA 10.2/NA 10.2/NANominal CFM/ARI Rated CFM [L/s] 6000/6000 [2831/2831] 6000/6000 [2831/2831] 6000/6000 [2831/2831] 6000/6000 [2831/2831]ARI Net Cooling Capacity Btu [kW] 180,000 [52.7] 180,000 [52.7] 180,000 [52.7] 180,000 [52.7]Net Sensible Capacity Btu [kW] 134,000 [39.3] 134,000 [39.3] 134,000 [39.3] 134,000 [39.3]


Heating Input Btu [kW] (1st Stage /2nd Stage) 125,000/250,000 175,000/350,000 125,000/250,000 175,000/350,000

Temperature Rise Range °F [°C] 15-45 [8.3/25] 30-60 [16.7/33.3] 15-45 [8.3/25] 30-60 [16.7/33.3]Steady State Efficiency (%) 81 81 81 81

Net Weight lbs. [kg] 1790 [812] 1817 [824] 1820 [826] 1847 [838]

No. Burners 10 14 10 14


No. Stages 2 2 2 2


Heating Output Btu [kW] (1st Stage /2nd Stage) 101,500/203,000 142,000/284,000 [41.6/83.2] 101,500/203,000 142,000/284,000 [41.6/83.2]






Indoor Fan—Type FC Centrifugal FC Centrifugal FC Centrifugal FC CentrifugalNo. Used/Diameter in. [mm] 2/18x9 [457.2x228.6] 2/18x9 [457.2x228.6] 2/18x9 [457.2x228.6] 2/18x9 [457.2x228.6]Drive Type/No. Speeds Belt/Variable Belt/Variable Belt/Variable Belt/VariableNo. Motors 1 1 1 1Motor HP 3 3 5 5Motor RPM 1725 1725 1725 1725Motor Frame Size 56 56 184 184




Gas Connection Pipe Size in. [mm] 0.75 [19.05] 0.75 [19.05] 0.75 [19.05] 0.75 [19.05]

CONTINUED

NOM. SIZES 15 & 20 TONS [52.8-70.3 kW] ASHRAE 90.1-2004 COMPLIANT MODELS

McQuay Cat 251-1 29




Gross Cooling Capacity Btu [kW] 188,000 [55.1] 188,000 [55.1] 188,000 [55.1] 188,000 [55.1]EER/SEER2 10.2/NA 10.2/NA 10.2/NA 10.2/NANominal CFM/ARI Rated CFM [L/s] 6000/6000 [2831/2831] 6000/6000 [2831/2831] 6000/6000 [2831/2831] 6000/6000 [2831/2831]ARI Net Cooling Capacity Btu [kW] 180,000 [52.7] 180,000 [52.7] 180,000 [52.7] 180,000 [52.7]Net Sensible Capacity Btu [kW] 134,000 [39.3] 134,000 [39.3] 134,000 [39.3] 134,000 [39.3]


Heating Input Btu [kW] (1st Stage /2nd Stage) 125,000/250,000 [36.6/73.2]175,000/350,000 [51.3/102.6]125,000/250,000 [36.6/73.2]175,000/350,000 [51.3/102.6]


Net Weight lbs. [kg] 1806 [819] 1841 [835] 1836 [833] 1871 [849]

No. Burners 10 14 10 14


No. Stages 2 2 2 2


Heating Output Btu [kW] (1st Stage /2nd Stage) 101,500/203,000 [29.7/59.5] 142,000/284,000 [41.6/83.2] 101,500/203,000 [29.7/59.5] 142,000/284,000 [41.6/83.2]











CONTINUED


30 McQuay Cat 251-1



Model MPS- 015AGYL35E 015AGYM35E 020AGCL30E 020AGCL40ECooling Performance1

Gross Cooling Capacity Btu [kW] 188,000 [55.1] 188,000 [55.1] 246,000 [72.1] 246,000 [72.1]EER/SEER2 10.2/NA 10.2/NA 9.7/NA 9.7/NANominal CFM/ARI Rated CFM [L/s] 6000/6000 [2831/2831] 6000/6000 [2831/2831] 7700/7400 [3634/3492] 7700/7400 [3634/3492]ARI Net Cooling Capacity Btu [kW] 180,000 [52.7] 180,000 [52.7] 232,000 [68] 232,000 [68]Net Sensible Capacity Btu [kW] 134,000 [39.3] 134,000 [39.3] 168,000 [49.2] 168,000 [49.2]


Heating Input Btu [kW] (1st Stage /2nd Stage) 175,000/350,000 [51.3/102.6] 175,000/350,000 [51.3/102.6] 150,000/300,000 [44/87.9] 200,000/400,000 [58.6/117.2]

Temperature Rise Range °F [°C] 30-60 [16.7/33.3] 30-60 [16.7/33.3] 15-45 [8.3/25] 25-55 [13.9/30.6]Steady State Efficiency (%) 81 81 81 81

Net Weight lbs. [kg] 1841 [835] 1871 [849] 1972 [894] 1988 [902]

No. Burners 14 14 12 14


No. Stages 2 2 2 2













CONTINUED


McQuay Cat 251-1 31



Model MPS- 020AGCM30E 020AGCM40E 020GDL30E 020AGDL40ECooling Performance1

Gross Cooling Capacity Btu [kW] 246,000 [72.1] 246,000 [72.1] 246,000 [72.1] 246,000 [72.1]EER/SEER2 9.7/NA 9.7/NA 9.7/NA 9.7/NANominal CFM/ARI Rated CFM [L/s] 7700/7400 [3634/3492] 7700/7400 [3634/3492] 7700/7400 [3634/3492] 7700/7400 [3634/3492]ARI Net Cooling Capacity Btu [kW] 232,000 [68] 232,000 [68] 232,000 [68] 232,000 [68]Net Sensible Capacity Btu [kW] 168,000 [49.2] 168,000 [49.2] 168,000 [49.2] 168,000 [49.2]


Heating Input Btu [kW] (1st Stage /2nd Stage) 150,000/300,000 [44/87.9] 200,000/400,000 [58.6/117.2] 150,000/300,000 [44/87.9] 200,000/400,000 [58.6/117.2]


Net Weight lbs. [kg] 1994 [904] 2010 [912] 1996 [905] 2020 [916]

No. Burners 12 14 12 14


No. Stages 2 2 2 2








Indoor Fan—Type FC Centrifugal FC Centrifugal FC Centrifugal FC CentrifugalNo. Used/Diameter in. [mm] 2/18x9 [457.2x228.6] 2/18x9 [457.2x228.6] 2/18x9 [457.2x228.6] 2/18x9 [457.2x228.6]Drive Type/No. Speeds Belt/Variable Belt/Variable Belt/Variable Belt/VariableNo. Motors 1 1 1 1Motor HP 7.5 7.5 5 5Motor RPM 1725 1725 1725 1725Motor Frame Size 213 213 184 184





CONTINUED


32 McQuay Cat 251-1



Model MPS- 020AGDM30E 020AGDM40ECooling Performance1

Gross Cooling Capacity Btu [kW] 246,000 [72.1] 246,000 [72.1]EER/SEER2 9.7/NA 9.7/NANominal CFM/ARI Rated CFM [L/s] 7700/7400 [3634/3492] 7700/7400 [3634/3492]ARI Net Cooling Capacity Btu [kW] 232,000 [68] 232,000 [68]Net Sensible Capacity Btu [kW] 168,000 [49.2] 168,000 [49.2]

Net System Power kW 23.9 23.9Heating Performance (Package Gas/Electric)4

Heating Input Btu [kW] (1st Stage /2nd Stage) 150,000/300,000 [44/87.9] 200,000/400,000 [58.6/117.2]

Temperature Rise Range °F [°C] 15-45 [8.3/25] 25-55 [13.9/30.6]Steady State Efficiency (%) 81 81

Net Weight lbs. [kg] 2018 [915] 2042 [926]

No. Burners 12 14

(3)2x18x24 [51x457x610] (3)2x18x24 [51x457x610]

No. Stages 2 2

Integrated Part Load Value3 9.9 9.9

Heating Output Btu [kW] (1st Stage /2nd Stage) 121,500/243,000 [35.6/71.2] 162,000/324,000 [47.5/94.9]

CompressorQty./Type 4/Scroll 4/Scroll

Outdoor Sound Rating (dB)5 91 91Outdoor Coil—Fin Type Louvered LouveredTube Type Rifled RifledTube Size in. [mm] OD 0.375 [9.5] 0.375 [9.5]Face Area sq. ft. [sq. m] 36 [3.34] 36 [3.34]Rows / FPI [FPcm] 2 / 22 [9] 2 / 22 [9]

Net Latent Capacity Btu [kW] 64,000 [18.8] 64,000 [18.8]

Indoor Coil—Fin Type Louvered LouveredTube Type Rifled RifledTube Size in. [mm] 0.375 [9.5] 0.375 [9.5]Face Area sq. ft. [sq. m] 15.75 [1.46] 15.75 [1.46]Rows / FPI [FPcm] 4 / 13 [5] 4 / 13 [5]Refrigerant Control Capillary Tubes Capillary TubesDrain Connection No./Size in. [mm] 1/1 [25.4] 1/1 [25.4]

Outdoor Fan—Type Propeller PropellerNo. Used/Diameter in. [mm] 4/24 [609.6] 4/24 [609.6]Drive Type/No. Speeds Direct/1 Direct/1CFM [L/s] 16000 [7550] 16000 [7550]No. Motors/HP 4 at 1/3 HP 4 at 1/3 HPMotor RPM 1075 1075

Indoor Fan—Type FC Centrifugal FC CentrifugalNo. Used/Diameter in. [mm] 2/18x9 [457.2x228.6] 2/18x9 [457.2x228.6]Drive Type/No. Speeds Belt/Variable Belt/VariableNo. Motors 1 1Motor HP 7.5 7.5Motor RPM 1725 1725Motor Frame Size 213 213

Filter—Type Disposable DisposableFurnished Yes Yes(No.) Size Recommended in. [mm] (3)2x18x18 [51x457x457] (3)2x18x18 [51x457x457]

Refrigerant Charge Oz. (Sys. 1/Sys. 2) [g] 117/107 [3317/3033] 117/107 [3317/3033]Weights

Ship Weight lbs. [kg] 2238 [1015] 2262 [1026]

Gas Connection Pipe Size in. [mm] 0.75 [19.05] 0.75 [19.05]

020AGYL40E

246,000 [72.1]9.7/NA

7700/7400 [3634/3492]232,000 [68]

168,000 [49.2]

23.9

200,000/400,000

25-55 [13.9/30.6]81

2020 [916]

14

(3)2x18x24 [51x457x610]

2

9.9

162,000/324,000 [47.5/94.9]

4/Scroll91

LouveredRifled

0.375 [9.5]36 [3.34]2 / 22 [9]

64,000 [18.8]

LouveredRifled

0.375 [9.5]15.75 [1.46]

4 / 13 [5]Capillary Tubes

1/1 [25.4]Propeller

4/24 [609.6]Direct/1

16000 [7550]4 at 1/3 HP

1075FC Centrifugal


15

1725184

DisposableYes

(3)2x18x18 [51x457x457]

117/107 [3317/3033]

2240 [1016]

0.75 [19.05]

020AGYM40E

246,000 [72.1]9.7/NA

7700/7400 [3634/3492]232,000 [68]

168,000 [49.2]

23.9

200,000/400,000 [58.6/117.2]

25-55 [13.9/30.6]81

2042 [926]

14

(3)2x18x24 [51x457x610]

2

9.9

162,000/324,000 [47.5/94.9]

4/Scroll91

LouveredRifled

0.375 [9.5]36 [3.34]2 / 22 [9]

64,000 [18.8]

LouveredRifled

0.375 [9.5]15.75 [1.46]

4 / 13 [5]Capillary Tubes

1/1 [25.4]Propeller

4/24 [609.6]Direct/1

16000 [7550]4 at 1/3 HP

1075FC Centrifugal


17.5

1725213

DisposableYes

(3)2x18x18 [51x457x457]

117/107 [3317/3033]

2262 [1026]

0.75 [19.05]


McQuay Cat 251-1 33

General Data

NOTES:1. Cooling Performance is rated at 95° F ambient, 80° F entering dry bulb, 67° F entering wet bulb. Gross capacity does

not include the effect of fan motor heat. ARI capacity is net and includes the effect of fan motor heat. Units are suitable for operation to 620% of nominal cfm. Units are certified in accordance with the Unitary Air Conditioner Equipment certification program, which is based on ARI Standard 210/240 or 360.

2. EER and/or SEER are rated at ARI conditions and in accordance with DOE test procedures.

3. Integrated Part Load Value is rated in accordance with ARI Standard 210/240 or 360. Units are rated at 80° F ambient, 80° F entering dry bulb, and 67° F entering wet bulb at ARI rated cfm.

4. Heating Performance limit settings and rating data were established and approved under laboratory test conditions using American National Standard Institute standards. Ratings shown are for elevations up to 2000 feet. For elevations above 2000 feet, ratings should be reduced at the rate of 4% for each 1000 feet above sea level.

5. Outdoor Sound Rating shown is tested in accordance with ARI Standard 270.

34 McQuay Cat 251-1

Systems Performance

GROSS SYSTEMS PERFORMANCE DATA—003AENTERING INDOOR AIR @ 80°F [26.7°C] dbE ➀

wbE 71°F [21.7°C] 67°F [19.4°C] 63°F [17.2°C]CFM [L/s] 1500 [707.9] 1200 [566.3] 900 [424.8] 1500 [707.9] 1200 [566.3] 900 [424.8] 1500 [707.9] 1200 [566.3] 900 [424.8]

DR ➀ .16 .12 .06 .16 .12 .06 .16 .12 .06

OUTDOOR

DRY

BULB

TEMPERATURE

°F[°C]

75[23.9]

Total BTUH [kW]Sens BTUH [kW]Power

45.5 [13.33]27.9 [8.18]

2.2

43.5 [12.75]24.9 [7.30]

2.2

41.6 [12.19]22.0 [6.45]

2.1

42.7 [12.51]33.1 [9.70]

2.2

40.9 [11.99]29.7 [8.70]

2.1

39.0 [11.43]26.2 [7.68]

2.1

40.3 [11.81]37.6 [11.02]

2.2

38.6 [11.31]33.7 [9.88]

2.1

36.8 [10.79]29.8 [8.73]

2.1

80[26.7]


44.6 [13.07]27.2 [7.97]

2.3

42.6 [12.48]24.4 [7.15]

2.3

40.7 [11.93]21.5 [6.30]

2.2

41.8 [12.25]32.5 [9.52]

2.3

40.0 [11.72]29.1 [8.53]

2.3

38.1 [11.17]25.7 [7.53]

2.2

39.4 [11.55]37.0 [10.84]

2.3

37.7 [11.05]33.2 [9.73]

2.3

35.9 [10.52]29.3 [8.59]

2.2

85[29.4]


43.7 [12.81]26.7 [7.83]

2.5

41.8 [12.25]23.9 [7.00]

2.4

39.9 [11.69]21.1 [6.18]

2.4

40.9 [11.99]32.0 [9.38]

2.4

39.1 [11.46]28.7 [8.41]

2.4

37.4 [10.96]25.3 [7.41]

2.3

38.5 [11.28]36.5 [10.70]

2.4

36.8 [10.79]32.7 [9.58]

2.4

35.1 [10.29]28.9 [8.47]

2.3

90[32.2]


42.9 [12.57]26.3 [7.71]

2.6

41.0 [12.02]23.6 [6.92]

2.5

39.1 [11.46]20.8 [6.10]

2.5

40.1 [11.75]31.6 [9.26]

2.6

38.3 [11.22]28.3 [8.29]

2.5

36.6 [10.73]25.0 [7.33]

2.5

37.6 [11.02]36.1 [10.58]

2.6

36.0 [10.55]32.3 [9.47]

2.5

34.4 [10.08]28.5 [8.35]

2.5

95[35]


42.0 [12.31]25.9 [7.59]

2.7

40.2 [11.78]23.2 [6.80]

2.6

38.3 [11.22]20.5 [6.01]

2.6

39.2 [11.49]31.1 [9.11]

2.7

37.5 [10.99]27.9 [8.18]

2.6

35.8 [10.49]24.6 [7.21]

2.6

36.8 [10.79]35.7 [10.46]

2.7

35.2 [10.32]31.9 [9.35]

2.6

33.6 [9.85]28.2 [8.26]

2.6

100[37.8]


41.1 [12.05]25.4 [7.44]

2.8

39.3 [11.52]22.8 [6.68]

2.8

37.5 [10.99]20.1 [5.89]

2.7

38.3 [11.22]30.7 [9.00]

2.8

36.6 [10.73]27.5 [8.06]

2.8

34.9 [10.23]24.3 [7.12]

2.7

35.8 [10.49]35.2 [10.32]

2.8

34.3 [10.05]31.5 [9.23]

2.8

32.7 [9.58]27.8 [8.15]

2.7

105[40.6]


40.0 [11.72]24.9 [7.30]

3.0

38.3 [11.22]22.3 [6.54]

2.9

36.5 [10.70]19.7 [5.77]

2.8

37.2 [10.90]30.1 [8.82]

3.0

35.6 [10.43]27.0 [7.91]

2.9

34.0 [9.96]23.8 [6.98]

2.8

34.8 [10.20]34.7 [10.17]

2.9

33.3 [9.76]31.0 [9.09]

2.9

31.8 [9.32]27.4 [8.03]

2.8

110[43.3]


38.8 [11.37]24.2 [7.09]

3.1

37.1 [10.87]21.7 [6.36]

3.0

35.4 [10.37]19.1 [5.60]

3.0

36.0 [10.55]29.4 [8.62]

3.1

34.4 [10.08]26.4 [7.74]

3.0

32.8 [9.61]23.3 [6.83]

3.0

33.6 [9.85]33.6 [9.85]

3.1

32.1 [9.41]30.4 [8.91]

3.0

30.6 [8.97]26.9 [7.88]

2.9

115[46.1]


37.3 [10.93]23.3 [6.83]

3.2

35.7 [10.46]20.9 [6.13]

3.1

34.1 [9.99]18.4 [5.39]

3.1

33.0 [9.67]25.6 [7.50]

3.1

31.5 [9.23]22.6 [6.62]

3.1

32.1 [9.41]32.1 [9.41]

3.2

30.7 [9.00]29.6 [8.67]

3.1

29.3 [8.59]26.2 [7.68]

3.1

34.5 [10.11]28.6 [8.38]

3.2


wbE 71°F [21.7°C] 67°F [19.4°C] 63°F [17.2°C]CFM [L/s] 1940 [915.5] 1550 [731.5] 1160 [547.4] 1940 [915.5] 1550 [731.5] 1160 [547.4] 1940 [915.5] 1550 [731.5] 1160 [547.4]

DR ➀ .21 .18 .14 .21 .18 .14 .21 .18 .14

OUTDOOR

DRY

BULB

TEMPERATURE

°F[°C]

75[23.9]


62.9 [18.43]38.2 [11.20]

2.9

60.2 [17.64]34.2 [10.02]

2.9

57.5 [16.85]30.2 [8.85]

2.8

57.6 [16.88]43.8 [12.84]

2.9

55.1 [16.15]39.2 [11.49]

2.8

52.6 [15.42]34.6 [10.14]

2.8

55.7 [16.32]51.4 [15.06]

2.9

53.3 [15.62]46.0 [13.48]

2.8

50.9 [14.92]40.6 [11.90]

2.7

80[26.7]


61.0 [17.88]36.6 [10.73]

3.1

58.4 [17.12]32.8 [9.61]

3.0

55.7 [16.32]29.0 [8.50]

3.0

55.7 [16.32]42.2 [12.37]

3.1

53.3 [15.62]37.8 [11.08]

3.0

50.9 [14.92]33.4 [9.79]

2.9

53.8 [15.77]49.8 [14.59]

3.0

51.5 [15.09]44.6 [13.07]

3.0

49.1 [14.39]39.4 [11.55]

2.9

85[29.4]


59.3 [17.38]35.5 [10.40]

3.3

56.8 [16.65]31.8 [9.32]

3.2

54.2 [15.88]28.1 [8.24]

3.1

54.1 [15.86]41.1 [12.05]

3.2

51.7 [15.15]36.8 [10.79]

3.2

49.4 [14.48]32.5 [9.52]

3.1

52.2 [15.30]48.7 [14.27]

3.2

49.9 [14.62]43.6 [12.78]

3.1

47.6 [13.95]38.5 [11.28]

3.1

90[32.2]


57.9 [16.97]34.8 [10.20]

3.4

55.4 [16.24]31.2 [9.14]

3.4

52.9 [15.50]27.5 [8.06]

3.3

52.6 [15.42]40.4 [11.84]

3.4

50.3 [14.74]36.2 [10.61]

3.4

48.0 [14.07]31.9 [9.35]

3.3

50.7 [14.86]48.0 [14.07]

3.4

48.5 [14.21]43.0 [12.60]

3.3

46.3 [13.57]37.9 [11.11]

3.3

95[35]


56.7 [16.62]34.3 [10.05]

3.6

54.2 [15.88]30.7 [9.00]

3.6

51.7 [15.15]27.2 [7.97]

3.5

51.4 [15.06]39.9 [11.69]

3.6

49.1 [14.39]35.7 [10.46]

3.5

46.9 [13.75]31.6 [9.26]

3.5

49.5 [14.51]47.5 [13.92]

3.6

47.3 [13.86]42.5 [12.46]

3.5

45.2 [13.25]37.6 [11.02]

3.4

100[37.8]


55.5 [16.27]34.0 [9.96]

3.8

53.1 [15.56]30.4 [8.91]

3.7

50.7 [14.86]26.9 [7.88]

3.6

50.3 [14.74]39.6 [11.61]

3.8

48.1 [14.10]35.4 [10.37]

3.7

45.9 [13.45]31.3 [9.17]

3.6

48.4 [14.18]47.2 [13.83]

3.7

46.3 [13.57]42.2 [12.37]

3.7

44.2 [12.95]37.3 [10.93]

3.6

105[40.6]


54.5 [15.97]33.7 [9.88]

4.0

52.2 [15.30]30.2 [8.85]

3.9

49.8 [14.59]26.6 [7.80]

3.8

49.3 [14.45]39.3 [11.52]

4.0

47.1 [13.80]35.2 [10.32]

3.9

45.0 [13.19]31.1 [9.11]

3.8

47.4 [13.89]46.9 [13.75]

3.9

45.3 [13.28]42.0 [12.31]

3.8

43.2 [12.66]37.1 [10.87]

3.8

110[43.3]


53.6 [15.71]33.3 [9.76]

4.2

51.3 [15.03]29.8 [8.73]

4.1

49.0 [14.36]26.3 [7.71]

4.0

48.3 [14.16]38.8 [11.37]

4.1

46.2 [13.54]34.8 [10.20]

4.0

44.1 [12.92]30.7 [9.00]

4.0

46.4 [13.60]46.4 [13.60]

4.1

44.4 [13.01]41.6 [12.19]

4.0

42.4 [12.43]36.7 [10.76]

3.9

115[46.1]


52.7 [15.44]32.6 [9.55]

4.3

50.4 [14.77]29.2 [8.56]

4.2

48.1 [14.10]25.8 [7.56]

4.2

47.4 [13.89]38.2 [11.20]

4.3

45.4 [13.31]34.2 [10.02]

4.2

43.3 [12.69]30.2 [8.85]

4.1

45.5 [13.33]45.5 [13.33]

4.3

43.6 [12.78]41.0 [12.02]

4.2

41.6 [12.19]36.2 [10.61]

4.1

DR —Depression ratiodbE —Entering air dry bulbwbE —Entering air wet bulb

Total —Total capacity x 1000 BTUHSens —Sensible capacity x 1000 BTUHPower —KW input

NOTES: � When the entering air dry bulb is other than 80°F [27°C], adjust the sensiblecapacity from the table by adding [1.10 x CFM x (1 – DR) x (dbE – 80)].


McQuay Cat 251-1 35


DR ➀ .20 .17 .12 .20 .17 .12 .20 .17 .12

wbE 71°F [21.7°C] 67°F [19.4°C] 63°F [17.2°C]CFM [L/s] 2380 [1123.2] 1900 [896.7] 1420 [670.1] 2380 [1123.2] 1900 [896.7] 1420 [670.1] 2380 [1123.2] 1900 [896.7] 1420 [670.1]

OUTDOOR

DRY

BULB

TEMPERATURE

°F[°C]

75[23.9]


73.0 [21.39]44.0 [12.90]

3.7

69.8 [20.46]39.4 [11.55]

3.6

66.6 [19.52]34.8 [10.20]

3.6

68.1 [19.96]52.1 [15.27]

3.7

65.2 [19.11]46.7 [13.69]

3.6

62.2 [18.23]41.2 [12.07]

3.5

64.2 [18.82]60.0 [17.58]

3.6

61.4 [17.99]53.7 [15.74]

3.5

58.6 [17.17]47.5 [13.92]

3.5

80[26.7]


72.0 [21.10]43.3 [12.69]

3.9

68.9 [20.19]38.8 [11.37]

3.8

65.8 [19.28]34.2 [10.02]

3.8

67.2 [19.69]51.4 [15.06]

3.9

64.2 [18.82]46.0 [13.48]

3.8

61.3 [17.97]40.7 [11.93]

3.7

63.2 [18.52]59.3 [17.38]

3.8

60.5 [17.73]53.1 [15.56]

3.7

57.7 [16.91]46.9 [13.75]

3.7

85[29.4]


70.7 [20.72]42.6 [12.48]

4.1

67.7 [19.84]38.1 [11.17]

4.0

64.6 [18.93]33.7 [9.88]

4.0

65.9 [19.31]50.7 [14.86]

4.1

63.0 [18.46]45.4 [13.31]

4.0

60.2 [17.64]40.1 [11.75]

3.9

61.9 [18.14]58.6 [17.17]

4.0

59.3 [17.38]52.4 [15.36]

3.9

56.6 [16.59]46.3 [13.57]

3.9

90[32.2]


69.3 [20.31]41.8 [12.25]

4.3

66.2 [19.40]37.5 [10.99]

4.2

63.2 [18.52]33.1 [9.70]

4.2

64.4 [18.87]49.9 [14.62]

4.3

61.6 [18.05]44.7 [13.10]

4.2

58.8 [17.23]39.5 [11.58]

4.1

60.5 [17.73]57.8 [16.94]

4.2

57.8 [16.94]51.8 [15.18]

4.1

55.2 [16.18]45.7 [13.39]

4.1

95[35]


67.6 [19.81]41.1 [12.05]

4.5

64.7 [18.96]36.8 [10.79]

4.5

61.7 [18.08]32.5 [9.52]

4.4

62.8 [18.40]49.2 [14.42]

4.5

60.0 [17.58]44.0 [12.90]

4.4

57.3 [16.79]38.9 [11.40]

4.3

58.8 [17.23]57.1 [16.73]

4.4

56.3 [16.50]51.1 [14.98]

4.4

53.7 [15.74]45.2 [13.25]

4.3

100[37.8]


65.9 [19.31]40.3 [11.81]

4.8

63.1 [18.49]36.1 [10.58]

4.7

60.2 [17.64]31.9 [9.35]

4.6

61.1 [17.91]48.4 [14.18]

4.7

58.4 [17.12]43.4 [12.72]

4.6

55.8 [16.35]38.3 [11.22]

4.5

57.1 [16.73]56.3 [16.50]

4.7

54.7 [16.03]50.4 [14.77]

4.6

52.2 [15.30]44.5 [13.04]

4.5

105[40.6]


64.3 [18.84]39.5 [11.58]

5.0

61.5 [18.02]35.4 [10.37]

4.9

58.7 [17.20]31.3 [9.17]

4.8

59.4 [17.41]47.6 [13.95]

4.9

56.9 [16.68]42.6 [12.48]

4.8

54.3 [15.91]37.7 [11.05]

4.7

55.5 [16.27]55.5 [16.27]

4.9

53.1 [15.56]49.7 [14.57]

4.8

50.7 [14.86]43.9 [12.87]

4.7

110[43.3]


62.8 [18.40]38.7 [11.34]

5.2

60.0 [17.58]34.6 [10.14]

5.1

57.3 [16.79]30.6 [8.97]

5.0

57.9 [16.97]46.8 [13.72]

5.1

55.4 [16.24]41.9 [12.28]

5.0

52.9 [15.50]37.0 [10.84]

4.9

54.0 [15.83]54.0 [15.83]

5.1

51.6 [15.12]49.0 [14.36]

5.0

49.3 [14.45]43.3 [12.69]

4.9

115[46.1]


61.4 [17.99]37.8 [11.08]

5.4

58.8 [17.23]33.9 [9.94]

5.3

56.1 [16.44]29.9 [8.76]

5.2

56.6 [16.59]45.9 [13.45]

5.3

54.1 [15.86]41.1 [12.05]

5.2

51.7 [15.15]36.3 [10.64]

5.1

52.6 [15.42]52.6 [15.42]

5.3

50.3 [14.74]48.2 [14.13]

5.2

48.0 [14.07]42.6 [12.48]

5.1


CFM [L/s]wbE

3000 [1415.8] 2400 [1132.7]71°F [21.7°C]

1800 [849.5] 3000 [1415.8]67°F [19.4°C]2400 [1132.7] 1800 [849.5]

63°F [17.2°C]3000 [1415.8] 2400 [1132.7] 1800 [849.5]

DR ➀ .19 .15 .10 .19 .15 .10 .19 .15 .10

OUTDOOR

DRY

BULB

TEMPERATURE

°F[°C]

75[23.9]


83.5 [24.47]55.3 [16.21]

4.8

80.1 [23.47]48.7 [14.27]

4.7

76.7 [22.48]42.2 [12.37]

4.6

81.6 [23.91]64.6 [18.93]

4.9

78.2 [22.92]58.0 [17.00]

4.8

74.8 [21.92]51.5 [15.09]

4.7

77.1 [22.60]74.1 [21.72]

4.7

73.7 [21.60]67.6 [19.81]

4.6

70.3 [20.60]61.0 [17.88]

4.5

80[26.7]


82.8 [24.27]55.2 [16.18]

5.2

79.4 [23.27]48.6 [14.24]

5.0

76.0 [22.27]42.1 [12.34]

4.9

80.9 [23.71]64.5 [18.90]

5.3

77.5 [22.71]57.9 [16.97]

5.1

74.1 [21.72]51.4 [15.06]

5.0

76.4 [22.39]74.0 [21.69]

5.1

73.0 [21.39]67.5 [19.78]

4.9

69.6 [20.40]60.9 [17.85]

4.8

85[29.4]


82.2 [24.09]54.7 [16.03]

5.5

78.8 [23.09]48.2 [14.13]

5.4

75.4 [22.10]41.7 [12.22]

5.2

80.3 [23.53]64.0 [18.76]

5.6

76.9 [22.54]57.5 [16.85]

5.5

73.5 [21.54]51.0 [14.95]

5.3

75.8 [22.21]73.6 [21.57]

5.4

72.4 [21.22]67.1 [19.67]

5.3

69.0 [20.22]60.5 [17.73]

5.2

90[32.2]


81.5 [23.89]54.1 [15.86]

5.8

78.1 [22.89]47.5 [13.92]

5.7

74.7 [21.89]41.0 [12.02]

5.6

79.6 [23.33]63.4 [18.58]

5.9

76.2 [22.33]56.8 [16.65]

5.8

72.8 [21.34]50.3 [14.74]

5.7

75.1 [22.01]72.9 [21.36]

5.7

71.7 [21.01]66.4 [19.46]

5.6

68.3 [20.02]59.8 [17.53]

5.5

95[35]


80.6 [23.62]53.2 [15.59]

6.2

77.2 [22.63]46.7 [13.69]

6.0

73.7 [21.60]40.2 [11.78]

5.9

78.7 [23.06]62.5 [18.32]

6.3

75.3 [22.07]56.0 [16.41]

6.1

71.9 [21.07]49.5 [14.51]

6.0

74.2 [21.75]72.1 [21.13]

6.1

70.7 [20.72]65.5 [19.20]

6.0

67.3 [19.72]59.0 [17.29]

5.8

100[37.8]


79.3 [23.24]52.3 [15.33]

6.5

75.8 [22.21]45.8 [13.42]

6.4

72.4 [21.22]39.2 [11.49]

6.2

77.4 [22.68]61.6 [18.05]

6.6

74.0 [21.69]55.1 [16.15]

6.5

70.5 [20.66]48.5 [14.21]

6.4

72.8 [21.34]71.1 [20.84]

6.4

69.4 [20.34]64.6 [18.93]

6.3

66.0 [19.34]58.1 [17.03]

6.2

105[40.6]


77.4 [22.68]51.4 [15.06]

6.8

74.0 [21.69]44.9 [13.16]

6.7

70.6 [20.69]38.3 [11.22]

6.6

75.5 [22.13]60.7 [17.79]

6.9

72.1 [21.13]54.2 [15.88]

6.8

68.7 [20.13]47.6 [13.95]

6.7

71.0 [20.81]70.2 [20.57]

6.8

67.6 [19.81]63.7 [18.67]

6.6

64.1 [18.79]57.2 [16.76]

6.5

110[43.3]


74.8 [21.92]50.6 [14.83]

7.2

71.4 [20.93]44.1 [12.92]

7.1

68.0 [19.93]37.5 [10.99]

6.9

72.9 [21.36]59.9 [17.55]

7.3

69.5 [20.37]53.3 [15.62]

7.2

66.1 [19.37]46.8 [13.72]

7.0

68.4 [20.05]68.4 [20.05]

7.1

65.0 [19.05]62.9 [18.43]

7.0

61.6 [18.05]56.4 [16.53]

6.8

115[46.1]


71.4 [20.93]49.9 [14.62]

7.5

68.0 [19.93]43.4 [12.72]

7.4

64.6 [18.93]36.9 [10.81]

7.3

69.5 [20.37]59.2 [17.35]

7.6

66.1 [19.37]52.7 [15.44]

7.5

62.7 [18.38]46.2 [13.54]

7.4

65.0 [19.05]65.0 [19.05]

7.4

61.6 [18.05]61.6 [18.05]

7.3

58.2 [17.06]55.7 [16.32]

7.2





Systems Performance

36 McQuay Cat 251-1

Systems Performance

GROSS SYSTEMS PERFORMANCE DATA—007AENTERING INDOOR AIR @ 80°F [26.7°C]

wbE 71°F [21.7°C] 67°F [19.4°C] 63°F [17.2°C]CFM [L/s] 3840 [1812] 3200 [1510] 2560 [1208] 3840 [1812] 3200 [1510] 2560 [1208] 3840 [1812] 3200 [1510] 2560 [1208]

DR ➀ .20 .16 .12 .20 .16 .12 .20 .16 .12

OUTDOOR

DRY

BULB

TEMPERATURE

°F[°C]

75[23.9]


107.2 [31.42]64.8 [18.99]

6.4

103.8 [30.42]58.1 [17.03]

6.3

100.4 [29.42]51.5 [15.09]

6.2

104.6 [30.66]79.8 [23.39]

6.4

101.2 [29.66]73.1 [21.42]

6.2

97.8 [28.66]66.4 [19.46]

6.1

100.2 [29.37]90.9 [26.64]

6.3

96.8 [28.37]84.3 [24.71]

6.2

93.4 [27.37]77.6 [22.74]

6.1

80[26.7]


105.0 [30.77]64.5 [18.90]

6.8

101.6 [29.78]57.9 [16.97]

6.7

98.2 [28.78]51.2 [15.01]

6.6

102.4 [30.01]79.5 [23.30]

6.8

99.0 [29.01]72.8 [21.34]

6.6

95.6 [28.02]66.2 [19.40]

6.5

97.9 [28.69]90.6 [26.55]

6.7

94.5 [27.70]84.0 [24.62]

6.6

91.1 [26.70]77.3 [22.65]

6.5

85[29.4]


103.1 [30.22]64.2 [18.82]

7.2

99.7 [29.22]57.5 [16.85]

7.1

96.3 [28.22]50.9 [14.92]

6.9

100.5 [29.45]79.1 [23.18]

7.1

97.1 [28.46]72.5 [21.25]

7.0

93.7 [27.46]65.8 [19.28]

6.9

96.0 [28.13]90.3 [26.46]

7.1

92.6 [27.14]83.6 [24.50]

7.0

89.2 [26.14]77.0 [22.57]

6.8

90[32.2]


101.3 [29.69]63.7 [18.67]

7.6

97.9 [28.69]57.1 [16.73]

7.4

94.5 [27.70]50.4 [14.77]

7.3

98.7 [28.93]78.7 [23.06]

7.5

95.3 [27.93]72.0 [21.10]

7.4

91.9 [26.93]65.4 [19.17]

7.2

94.2 [27.61]89.8 [26.32]

7.5

90.8 [26.61]83.2 [24.38]

7.3

87.4 [25.61]76.5 [22.42]

7.2

95[35]


99.4 [29.13]63.1 [18.49]

7.9

96.0 [28.13]56.4 [16.53]

7.8

92.6 [27.14]49.8 [14.59]

7.7

96.8 [28.37]78.0 [22.86]

7.9

93.4 [27.37]71.4 [20.93]

7.7

90.0 [26.38]64.7 [18.96]

7.6

92.3 [27.05]89.2 [26.14]

7.8

88.9 [26.05]82.5 [24.18]

7.7

85.5 [25.06]75.9 [22.24]

7.6

100[37.8]


97.1 [28.46]62.2 [18.23]

8.3

93.7 [27.46]55.5 [16.27]

8.2

90.3 [26.46]48.9 [14.33]

8.1

94.5 [27.70]77.2 [22.63]

8.2

91.1 [26.70]70.5 [20.66]

8.1

87.7 [25.70]63.8 [18.70]

8.0

90.1 [26.41]88.3 [25.88]

8.2

86.7 [25.41]81.7 [23.94]

8.1

83.3 [24.41]75.0 [21.98]

8.0

105[40.6]


94.3 [27.64]61.0 [17.88]

8.7

90.9 [26.64]54.4 [15.94]

8.6

87.5 [25.64]47.7 [13.98]

8.4

91.7 [26.87]76.0 [22.27]

8.6

88.3 [25.88]69.3 [20.31]

8.5

84.9 [24.88]62.7 [18.38]

8.4

87.3 [25.59]87.1 [25.53]

8.6

83.9 [24.59]80.5 [23.59]

8.5

80.5 [23.59]73.8 [21.63]

8.3

110[43.3]


90.8 [26.61]59.5 [17.44]

9.1

87.4 [25.61]52.8 [15.47]

8.9

84.0 [24.62]46.2 [13.54]

8.8

88.2 [25.85]74.5 [21.83]

9.0

84.8 [24.85]67.8 [19.87]

8.9

81.4 [23.86]61.1 [17.91]

8.7

83.7 [24.53]83.7 [24.53]

9.0

80.3 [23.53]79.0 [23.15]

8.8

76.9 [22.54]72.3 [21.19]

8.7

115[46.1]


86.2 [25.26]57.6 [16.88]

9.4

82.8 [24.27]50.9 [14.92]

9.3

79.4 [23.27]44.2 [12.95]

9.2

83.6 [24.50]72.5 [21.25]

9.4

80.2 [23.50]65.9 [19.31]

9.2

76.8 [22.51]59.2 [17.35]

9.1

79.2 [23.21]79.2 [23.21]

9.3

75.8 [22.21]75.8 [22.21]

9.2

72.4 [21.22]70.4 [20.63]

9.1


wbE 71°F [21.7°C] 67°F [19.4°C] 63°F [17.2°C]CFM [L/s] 4080 [1926] 3400 [1605] 2720 [1284] 4080 [1926] 3400 [1605] 2720 [1284] 4080 [1926] 3400 [1605] 2720 [1284]

DR ➀ .15 .12 .07 .15 .12 .07 .15 .12 .07

OUTDOOR

DRY

BULB

TEMPERATURE

°F[°C]

75[23.9]


119.8 [35.11]75.2 [22.04]

7.2

116.0 [34.00]67.7 [19.84]

7.1

112.2 [32.88]60.2 [17.64]

6.9

115.3 [33.79]89.6 [26.26]

7.1

111.5 [32.68]82.1 [24.06]

7.0

107.8 [31.59]74.6 [21.86]

6.8

109.9 [32.21]101.9 [29.86]

7.0

106.1 [31.09]94.4 [27.67]

6.9

102.3 [29.98]86.9 [25.47]

6.7

80[26.7]


118.8 [34.82]74.9 [21.95]

7.6

115.0 [33.70]67.4 [19.75]

7.4

111.2 [32.59]59.9 [17.55]

7.3

114.4 [33.53]89.3 [26.17]

7.5

110.6 [32.41]81.8 [23.97]

7.4

106.8 [31.30]74.4 [21.80]

7.2

108.9 [31.92]101.6 [29.78]

7.4

105.1 [30.80]94.1 [27.58]

7.3

101.3 [29.69]86.6 [25.38]

7.1

85[29.4]


117.1 [34.32]74.5 [21.83]

8.0

113.3 [33.20]67.0 [19.64]

7.8

109.5 [32.09]59.5 [17.44]

7.7

112.7 [33.03]88.9 [26.05]

7.9

108.9 [31.92]81.4 [23.86]

7.7

105.1 [30.80]73.9 [21.66]

7.6

107.2 [31.42]101.2 [29.66]

7.8

103.4 [30.30]93.7 [27.46]

7.7

99.6 [29.19]86.2 [25.26]

7.5

90[32.2]


114.9 [33.67]73.9 [21.66]

8.4

111.1 [32.56]66.4 [19.46]

8.2

107.3 [31.45]58.9 [17.26]

8.1

110.5 [32.38]88.3 [25.88]

8.3

106.7 [31.27]80.8 [23.68]

8.1

102.9 [30.16]73.3 [21.48]

8.0

105.0 [30.77]100.5 [29.45]

8.2

101.2 [29.66]93.1 [27.28]

8.1

97.4 [28.55]85.6 [25.09]

7.9

95[35]


112.2 [32.88]73.1 [21.42]

8.8

108.5 [31.80]65.6 [19.23]

8.6

104.7 [30.68]58.1 [17.03]

8.5

107.8 [31.59]87.5 [25.64]

8.7

104.0 [30.48]80.0 [23.45]

8.5

100.2 [29.37]72.6 [21.28]

8.4

102.3 [29.98]100.1 [29.34]

8.6

98.6 [28.90]92.3 [27.05]

8.4

94.8 [27.78]84.8 [24.85]

8.3

100[37.8]


109.3 [32.03]72.1 [21.13]

9.1

105.5 [30.92]64.7 [18.96]

9.0

101.7 [29.81]57.2 [16.76]

8.9

104.9 [30.74]86.6 [25.38]

9.1

101.1 [29.63]79.1 [23.18]

8.9

97.3 [28.52]71.6 [20.98]

8.8

99.4 [29.13]98.6 [28.90]

9.0

95.6 [28.02]91.4 [26.79]

8.8

91.8 [26.90]83.9 [24.59]

8.7

105[40.6]


106.2 [31.12]71.0 [20.81]

9.5

102.4 [30.01]63.6 [18.64]

9.4

98.6 [28.90]56.1 [16.44]

9.2

101.7 [29.81]85.4 [25.03]

9.4

98.0 [28.72]78.0 [22.86]

9.3

94.2 [27.61]70.5 [20.66]

9.2

96.3 [28.22]96.3 [28.22]

9.4

92.5 [27.11]90.3 [26.46]

9.2

88.7 [26.00]82.8 [24.27]

9.1

110[43.3]


103.0 [30.19]69.7 [20.43]

9.9

99.2 [29.07]62.3 [18.26]

9.8

95.4 [27.96]54.8 [16.06]

9.6

98.6 [28.90]84.1 [24.65]

9.8

94.8 [27.78]76.7 [22.48]

9.7

91.0 [26.67]69.2 [20.28]

9.6

93.1 [27.28]93.1 [27.28]

9.8

89.3 [26.17]89.0 [26.08]

9.6

85.5 [25.06]81.5 [23.89]

9.5

115[46.1]


99.9 [29.28]68.2 [19.99]

10.3

96.2 [28.19]60.8 [17.82]

10.2

92.4 [27.08]53.3 [15.62]

10.0

95.5 [27.99]82.7 [24.24]

10.2

91.7 [26.87]75.2 [22.04]

10.1

88.0 [25.79]67.7 [19.84]

9.9

90.0 [26.38]90.0 [26.38]

10.1

86.3 [25.29]86.3 [25.29]

10.0

82.5 [24.18]80.0 [23.45]

9.9





McQuay Cat 251-1 37

Systems Performance

GROSS SYSTEMS PERFORMANCE DATA—A010AENTERING INDOOR AIR @ 80°F [26.7°C]

wbE 71°F [21.7°C] 67°F [19.4°C] 63°F [17.2°C]CFM [L/s] 4800 [2265] 4000 [1888] 3200 [1510] 4800 [2265] 4000 [1888] 3200 [1510] 4800 [2265] 4000 [1888] 3200 [1510]

DR ➀ .18 .15 .11 .18 .15 .11 .18 .15 .11

OUTDOOR

DRY

BULB

TEMPERATURE

°F[°C]

75[23.9]


144.7 [42.41]86.8 [25.44]

8.7

140.1 [41.06]78.1 [22.89]

8.5

135.5 [39.71]69.3 [20.31]

8.4

141.6 [41.50]105.8 [31.01]

8.5

137.0 [40.15]97.1 [28.46]

8.3

132.5 [38.83]88.3 [25.88]

8.1

139.1 [40.77]121.4 [35.58]

8.4

134.5 [39.42]112.7 [33.03]

8.3

129.9 [38.07]103.9 [30.45]

8.1

80[26.7]


143.7 [42.11]86.6 [25.38]

9.1

139.2 [40.80]77.8 [22.80]

9.0

134.6 [39.45]69.1 [20.25]

8.8

140.6 [41.21]105.6 [30.95]

8.9

136.1 [39.89]96.8 [28.37]

8.7

131.5 [38.54]88.1 [25.82]

8.6

138.1 [40.47]121.2 [35.52]

8.9

133.6 [39.15]112.4 [32.94]

8.7

129.0 [37.81]103.7 [30.39]

8.5

85[29.4]


141.2 [41.38]85.9 [25.17]

9.6

136.6 [40.03]77.1 [22.60]

9.4

132.0 [38.69]68.4 [20.05]

9.2

138.1 [40.47]104.9 [30.74]

9.3

133.5 [39.12]96.1 [28.16]

9.1

129.0 [37.81]87.4 [25.61]

9.0

135.6 [39.74]120.5 [35.32]

9.3

131.0 [38.39]111.8 [32.77]

9.1

126.5 [37.07]103.0 [30.19]

8.9

90[32.2]


137.6 [40.33]84.8 [24.85]

10.0

133.0 [38.98]76.1 [22.30]

9.8

128.4 [37.63]67.3 [19.72]

9.6

134.5 [39.42]103.8 [30.42]

9.7

129.9 [38.07]95.1 [27.87]

9.6

125.3 [36.72]86.3 [25.29]

9.4

132.0 [38.69]119.4 [34.99]

9.7

127.4 [37.34]110.7 [32.44]

9.5

122.8 [35.99]102.0 [29.89]

9.4

95[35]


133.4 [39.10]83.5 [24.47]

10.4

128.8 [37.75]74.7 [21.89]

10.2

124.2 [36.40]66.0 [19.34]

10.1

130.3 [38.19]102.4 [30.01]

10.1

125.7 [36.84]93.7 [27.46]

10.0

121.1 [35.49]85.0 [24.91]

9.8

127.8 [37.45]118.1 [34.61]

10.1

123.2 [36.11]109.3 [32.03]

9.9

118.6 [34.76]100.6 [29.48]

9.8

100[37.8]


129.0 [37.81]81.8 [23.97]

10.8

124.5 [36.49]73.1 [21.42]

10.6

119.9 [35.14]64.3 [18.84]

10.5

126.0 [36.93]100.8 [29.54]

10.6

121.4 [35.58]92.1 [26.99]

10.4

116.8 [34.23]83.3 [24.41]

10.2

123.5 [36.19]116.4 [34.11]

10.5

118.9 [34.85]107.7 [31.56]

10.4

114.3 [33.50]98.9 [28.98]

10.2

105[40.6]


125.1 [36.66]80.0 [23.45]

11.2

120.6 [35.34]71.3 [20.90]

11.1

116.0 [34.00]62.5 [18.32]

10.9

122.0 [35.75]99.0 [29.01]

11.0

117.5 [34.44]90.2 [26.44]

10.8

112.9 [33.09]81.5 [23.89]

10.7

119.5 [35.02]114.6 [33.59]

11.0

115.0 [33.70]105.9 [31.04]

10.8

110.4 [32.36]97.1 [28.46]

10.6

110[43.3]


122.1 [35.78]78.0 [22.86]

11.7

117.5 [34.44]69.3 [20.31]

11.5

113.0 [33.12]60.5 [17.73]

11.3

119.0 [34.88]97.0 [28.43]

11.4

114.4 [33.53]88.3 [25.88]

11.2

109.9 [32.21]79.5 [23.30]

11.1

116.5 [34.14]112.6 [33.00]

11.4

111.9 [32.79]103.9 [30.45]

11.2

107.4 [31.48]95.1 [27.87]

11.0

115[46.1]


120.5 [35.32]76.0 [22.27]

12.1

115.9 [33.97]67.2 [19.69]

11.9

111.3 [32.62]58.5 [17.14]

11.7

117.4 [34.41]94.9 [27.81]

11.8

112.8 [33.06]86.2 [25.26]

11.7

108.2 [31.71]77.5 [22.71]

11.5

114.9 [33.67]110.6 [32.41]

11.8

110.3 [32.33]101.8 [29.83]

11.6

105.7 [30.98]93.1 [27.28]

11.5

GROSS SYSTEMS PERFORMANCE DATA—A012AENTERING INDOOR AIR @ 80°F [26.7°C]

wbE 71°F [21.7°C] 67°F [19.4°C] 63°F [17.2°C]CFM [L/s] 5800 [2737] 4300 [2029] 3800 [1793] 5800 [2737] 4300 [2029] 3800 [1793] 5800 [2737] 4300 [2029] 3800 [1793]

DR ➀ .12 .09 .07 .12 .09 .07 .12 .09 .07

OUTDOOR

DRY

BULB

TEMPERATURE

°F[°C]

75[23.9]


186.1 [54.54]110.8 [32.47]

11.0

175.0 [51.29]95.2 [27.90]

10.6

171.3 [50.20]90.1 [26.41]

10.5

174.6 [51.17]134.5 [39.42]

10.7

164.2 [48.12]115.7 [33.91]

10.4

160.7 [47.10]109.4 [32.06]

10.3

168.5 [49.38]159.6 [46.77]

10.4

158.5 [46.45]137.3 [40.24]

10.1

155.1 [45.46]129.8 [38.04]

10.0

80[26.7]


184.0 [53.93]110.3 [32.33]

11.6

173.0 [50.70]94.8 [27.78]

11.3

169.4 [49.65]89.7 [26.29]

11.2

172.5 [50.55]134.1 [39.30]

11.4

162.2 [47.54]115.3 [33.79]

11.1

158.8 [46.54]109.0 [31.94]

11.0

166.4 [48.77]159.2 [46.66]

11.1

156.5 [45.87]136.9 [40.12]

10.8

153.1 [44.87]129.5 [37.95]

10.7

85[29.4]


181.3 [53.13]109.1 [31.97]

12.2

170.5 [49.97]93.8 [27.49]

11.9

166.8 [48.88]88.7 [26.00]

11.8

169.8 [49.76]132.9 [38.95]

12.0

159.6 [46.77]114.3 [33.50]

11.7

156.3 [45.81]108.1 [31.68]

11.6

163.6 [47.95]158.0 [46.31]

11.7

153.9 [45.10]135.9 [39.83]

11.4

150.6 [44.14]128.5 [37.66]

11.3

90[32.2]


178.0 [52.17]107.4 [31.48]

12.9

167.4 [49.06]92.4 [27.08]

12.5

163.8 [48.01]87.4 [25.61]

12.4

166.5 [48.80]131.2 [38.45]

12.7

156.6 [45.89]112.8 [33.06]

12.3

153.3 [44.93]106.7 [31.27]

12.2

160.4 [47.01]156.2 [45.78]

12.4

150.8 [44.20]134.4 [39.39]

12.0

147.6 [43.26]127.1 [37.25]

11.9

95[35]


174.3 [51.08]105.4 [30.89]

13.5

163.9 [48.03]90.7 [26.58]

13.2

160.5 [47.04]85.8 [25.15]

13.0

162.8 [47.71]129.2 [37.86]

13.3

153.1 [44.87]111.1 [32.56]

13.0

149.9 [43.93]105.1 [30.80]

12.8

156.7 [45.92]154.6 [45.31]

13.0

147.4 [43.20]132.7 [38.89]

12.6

144.2 [42.26]125.5 [36.78]

12.5

100[37.8]


170.4 [49.94]103.4 [30.30]

14.2

160.2 [46.95]88.9 [26.05]

13.8

156.9 [45.98]84.1 [24.65]

13.7

158.9 [46.57]127.1 [37.25]

14.0

149.4 [43.78]109.3 [32.03]

13.6

146.3 [42.88]103.4 [30.30]

13.5

152.8 [44.78]152.0 [44.55]

13.7

143.7 [42.11]130.9 [38.36]

13.3

140.6 [41.21]123.8 [36.28]

13.1

105[40.6]


166.3 [48.74]101.3 [29.69]

14.8

156.4 [45.84]87.2 [25.56]

14.4

153.1 [44.87]82.4 [24.15]

14.3

154.8 [45.37]125.1 [36.66]

14.6

145.6 [42.67]107.6 [31.53]

14.2

142.5 [41.76]101.8 [29.83]

14.1

148.7 [43.58]148.7 [43.58]

14.3

139.8 [40.97]129.2 [37.86]

13.9

136.8 [40.09]122.2 [35.81]

13.8

110[43.3]


162.2 [47.54]99.6 [29.19]

15.5

152.5 [44.69]85.7 [25.12]

15.1

149.3 [43.76]81.0 [23.74]

14.9

150.6 [44.14]123.4 [36.16]

15.3

141.7 [41.53]106.1 [31.09]

14.9

138.7 [40.65]100.4 [29.42]

14.7

144.5 [42.35]144.5 [42.35]

15.0

135.9 [39.83]127.7 [37.43]

14.5

133.0 [38.98]120.8 [35.40]

14.4

115[46.1]


158.1 [46.33]98.4 [28.84]

16.1

148.6 [43.55]84.6 [24.79]

15.7

145.5 [42.64]80.0 [23.45]

15.5

146.6 [42.96]122.2 [35.81]

15.9

137.8 [40.39]105.1 [30.80]

15.5

134.9 [39.54]99.4 [29.13]

15.3

140.4 [41.15]140.4 [41.15]

15.6

132.1 [38.71]126.7 [37.13]

15.2

129.3 [37.89]119.8 [35.11]

15.0





38 McQuay Cat 251-1

Systems Performance


wbE 71°F [21.7°C] 67°F [19.4°C] 63°F [17.2°C]CFM [L/s] 7200 [3398] 6000 [2831] 4800 [2265] 7200 [3398] 6000 [2831] 4800 [2265] 7200 [3398] 6000 [2831] 4800 [2265]

DR ➀ .16 .12 .08 .16 .12 .08 .16 .12 .08

OUTDOOR

DRY

BULB

TEMPERATURE

°F[°C]

75[23.9]


216.1 [63.33]134.5 [39.42]

13.2

209.2 [61.31]121.2 [35.52]

12.9

202.3 [59.29]107.9 [31.62]

12.7

204.7 [59.99]160.0 [46.89]

12.8

197.8 [57.97]146.7 [42.99]

12.5

191.0 [55.98]133.4 [39.10]

12.3

195.9 [57.41]186.9 [54.77]

12.9

189.0 [55.39]173.6 [50.88]

12.7

182.2 [53.40]160.3 [46.98]

12.4

80[26.7]


216.6 [63.48]135.4 [39.68]

13.8

209.8 [61.49]122.1 [35.78]

13.5

202.9 [59.46]108.7 [31.86]

13.3

205.2 [60.14]160.9 [47.16]

13.4

198.4 [58.15]147.5 [43.23]

13.2

191.5 [56.12]134.2 [39.33]

12.9

196.4 [57.56]187.8 [55.04]

13.6

189.6 [55.57]174.4 [51.11]

13.3

182.7 [53.54]161.1 [47.21]

13.1

85[29.4]


214.8 [62.95]134.7 [39.48]

14.4

208.0 [60.96]121.4 [35.58]

14.2

201.1 [58.94]108.0 [31.65]

13.9

203.4 [59.61]160.2 [46.95]

14.1

196.6 [57.62]146.8 [43.02]

13.8

189.7 [55.60]133.5 [39.12]

13.6

194.7 [57.06]187.1 [54.83]

14.2

187.8 [55.04]173.7 [50.91]

13.9

180.9 [53.02]160.4 [47.01]

13.7

90[32.2]


211.4 [61.96]132.9 [38.95]

15.1

204.5 [59.93]119.6 [35.05]

14.8

197.7 [57.94]106.3 [31.15]

14.6

200.0 [58.61]158.4 [46.42]

14.7

193.1 [56.59]145.1 [42.52]

14.5

186.3 [54.60]131.8 [38.63]

14.2

191.2 [56.04]185.2 [54.28]

14.8

184.3 [54.01]172.0 [50.41]

14.6

177.5 [52.02]158.7 [46.51]

14.3

95[35]


207.0 [60.67]130.6 [38.28]

15.7

200.1 [58.64]117.2 [34.35]

15.5

193.2 [56.62]103.9 [30.45]

15.2

195.6 [57.32]156.0 [45.72]

15.3

188.7 [55.30]142.7 [41.82]

15.1

181.9 [53.31]129.4 [37.92]

14.8

186.8 [54.75]183.2 [53.69]

15.5

179.9 [52.72]169.6 [49.70]

15.2

173.1 [50.73]156.3 [45.81]

15.0

100[37.8]


202.2 [59.26]128.1 [37.54]

16.4

195.4 [57.27]114.8 [33.64]

16.1

188.5 [55.24]101.5 [29.75]

15.9

190.9 [55.95]153.6 [45.02]

16.0

184.0 [53.93]140.2 [41.09]

15.7

177.1 [51.90]126.9 [37.19]

15.5

182.1 [53.37]180.4 [52.87]

16.1

175.2 [51.35]167.2 [49.00]

15.9

168.3 [49.32]153.8 [45.07]

15.6

105[40.6]


197.9 [58.00]126.0 [36.93]

17.0

191.1 [56.01]112.7 [33.03]

16.8

184.2 [53.98]99.3 [29.10]

16.5

186.5 [54.66]151.5 [44.40]

16.6

179.7 [52.66]138.1 [40.47]

16.4

172.8 [50.64]124.8 [36.58]

16.1

177.7 [52.08]177.7 [52.08]

16.8

170.9 [50.09]165.0 [48.36]

16.5

164.0 [48.06]151.7 [44.46]

16.3

110[43.3]


194.7 [57.06]124.7 [36.55]

17.6

187.8 [55.04]111.4 [32.65]

17.4

180.9 [53.02]98.1 [28.75]

17.1

183.3 [53.72]150.2 [44.02]

17.3

176.4 [51.70]136.9 [40.12]

17.0

169.6 [49.70]123.6 [36.22]

16.8

174.5 [51.14]174.5 [51.14]

17.4

167.6 [49.12]163.8 [48.01]

17.1

160.8 [47.13]150.5 [44.11]

16.9

115[46.1]


193.2 [56.62]124.8 [36.58]

18.3

186.3 [54.60]111.5 [32.68]

18.0

179.4 [52.58]98.2 [28.78]

17.8

181.8 [53.28]150.3 [44.05]

17.9

174.9 [51.26]137.0 [40.15]

17.7

168.1 [49.27]123.6 [36.22]

17.4

173.0 [50.70]173.0 [50.70]

18.0

166.1 [48.68]163.9 [48.03]

17.8

159.3 [46.69]150.6 [44.14]

17.5


wbE 71°F [21.7°C] 67°F [19.4°C] 63°F [17.2°C]CFM [L/s] 8880 [4191] 7400 [3492] 5920 [2794] 8880 [4191] 7400 [3492] 5920 [2794] 8880 [4191] 7400 [3492] 5920 [2794]

DR ➀ .15 .12 .08 .15 .12 .08 .15 .12 .08

OUTDOOR

DRY

BULB

TEMPERATURE

°F[°C]

75[23.9]


277.6 [81.36]173.0 [50.70]

16.2

268.7 [78.75]156.1 [45.75]

15.8

259.7 [76.11]139.1 [40.77]

15.5

265.8 [77.90]204.3 [59.87]

16.2

256.9 [75.29]187.4 [54.92]

15.8

248.0 [72.68]170.4 [49.94]

15.5

255.3 [74.82]238.3 [69.84]

15.8

246.4 [72.21]221.4 [64.89]

15.5

237.5 [69.60]204.4 [59.90]

15.1

80[26.7]


274.3 [80.39]172.2 [50.47]

17.2

265.3 [77.75]155.2 [45.48]

16.9

256.4 [75.14]138.3 [40.53]

16.5

262.5 [76.93]203.5 [59.64]

17.2

253.6 [74.32]186.5 [54.66]

16.9

244.6 [71.69]169.6 [49.70]

16.5

252.0 [73.85]237.5 [69.60]

16.8

243.1 [71.25]220.5 [64.62]

16.5

234.1 [68.61]203.6 [59.67]

16.1

85[29.4]


271.6 [79.60]170.9 [50.09]

18.2

262.7 [76.99]153.9 [45.10]

17.9

253.7 [74.35]137.0 [40.15]

17.6

259.8 [76.14]202.2 [59.26]

18.2

250.9 [73.53]185.2 [54.28]

17.9

242.0 [70.92]168.3 [49.32]

17.6

249.3 [73.06]236.1 [69.19]

17.8

240.4 [70.45]219.2 [64.24]

17.5

231.5 [67.85]202.2 [59.26]

17.2

90[32.2]


269.1 [78.87]169.2 [49.59]

19.3

260.2 [76.26]152.2 [44.61]

18.9

251.2 [73.62]135.3 [39.65]

18.6

257.3 [75.41]200.5 [58.76]

19.2

248.4 [72.80]183.5 [53.78]

18.9

239.5 [70.19]166.6 [48.83]

18.6

246.8 [72.33]234.5 [68.73]

18.9

237.9 [69.72]217.5 [63.74]

18.5

229.0 [67.11]200.6 [58.79]

18.2

95[35]


266.3 [78.04]167.2 [49.00]

20.3

257.4 [75.44]150.3 [44.05]

19.9

248.4 [72.80]133.3 [39.07]

19.6

254.5 [74.59]198.5 [58.17]

20.3

245.6 [71.98]181.6 [53.22]

19.9

236.7 [69.37]164.6 [48.24]

19.6

244.0 [71.51]232.5 [68.14]

19.9

235.1 [68.90]215.6 [63.19]

19.5

226.2 [66.29]198.6 [58.20]

19.2

100[37.8]


262.7 [76.99]165.1 [48.39]

21.3

253.8 [74.38]148.1 [43.40]

21.0

244.8 [71.74]131.2 [38.45]

20.6

250.9 [73.53]196.4 [57.56]

21.3

242.0 [70.92]179.4 [52.58]

21.0

233.1 [68.31]162.5 [47.62]

20.6

240.4 [70.45]230.4 [67.52]

20.9

231.5 [67.85]213.4 [62.54]

20.6

222.6 [65.24]196.5 [57.59]

20.2

105[40.6]


257.8 [75.55]162.8 [47.71]

22.3

248.9 [72.95]145.9 [42.76]

22.0

240.0 [70.34]128.9 [37.78]

21.7

246.1 [72.12]196.4 [57.56]

22.3

237.1 [69.49]177.2 [51.93]

22.0

228.2 [66.88]160.2 [46.95]

21.7

235.6 [69.05]228.1 [66.85]

21.9

226.7 [66.44]211.2 [61.90]

21.6

217.7 [63.80]194.2 [56.91]

21.3

110[43.3]


251.2 [73.62]160.5 [47.04]

23.4

242.3 [71.01]143.6 [42.09]

23.0

233.4 [68.40]126.6 [37.10]

22.7

239.5 [70.19]191.9 [56.24]

23.3

230.5 [67.55]174.9 [51.26]

23.0

221.6 [64.94]158.0 [46.31]

22.7

229.0 [67.11]225.8 [66.18]

23.0

220.0 [64.48]208.9 [61.22]

22.6

211.1 [61.87]191.9 [56.24]

22.3

115[46.1]


242.4 [71.04]158.3 [46.39]

24.4

233.5 [68.43]141.4 [41.44]

24.0

224.5 [65.79]124.4 [36.46]

23.7

230.6 [67.58]189.6 [55.57]

24.4

221.7 [64.97]172.7 [50.61]

24.0

212.8 [62.37]155.7 [45.63]

23.7

220.1 [64.50]220.1 [64.50]

24.0

211.2 [61.90]206.7 [60.58]

23.6

202.3 [59.29]189.7 [55.60]

23.3





McQuay Cat 251-1 39

DIR

ECT-

DR

IVE

208

AIR

FLO

W P

ERFO

RM

AN

CE

Exte

rnal

Sta

tic P

ress

ure—

Inch

es W

.C. [

kPa]

CFM

[L/s

] Air

Deliv

ery/

RPM

/Wat

ts—

208

Volts

Blow

er S

ize/

Mot

orHP

[w]

# of

Spe

eds

Unit

Mod

elM

otor

Spe

edFr

om F

acto

ryM

anuf

actu

rer

Reco

mm

ende

dAi

r-Flo

w R

ange

(Min

/Max

) CFM

Mot

orSp

eed

High

CFM

1680

[793

]16

50 [7

79]

1625

[767

]15

80 [7

46]

1530

[722

]14

60 [6

89]

1390

[656

]

10x1

01/

2 HP

[373

]3

Spee

d M

otor

515

0.1

[.02

]0.

2 [.

05]

0.3

[.07

]0.

4 [.

10]

0.5

[.12

]0.

6 [.

15]

0.7

[.17

]

1280

[604

]

Wat

ts65

064

063

061

058

056

054

5

Wat

ts45

040

039

538

538

037

537

0

Med

CFM

1515

[715

]15

00 [7

08]

1475

[696

]14

50 [6

84]

1405

[663

]13

50 [6

37]

1275

[602

]

445

1180

[557

]

360

925

[437

]

MPS

-003

ALo

w10

50/1

350

Low

CFM

1210

[571

]11

93 [5

63]

1175

[555

]11

55 [5

45]

1125

[531

]10

75 [5

07]

1015

[479

]

Wat

ts52

551

551

050

549

047

546

0

0.8

[.20

]

Low

Heat

ing

Inpu

tBT

U/hr

[kW

]

80,0

00[2

3.45

]

High

CFM

1680

[793

]16

50 [7

79]

1625

[767

]15

80 [7

46]

1530

[722

]14

60 [6

89]

1390

[656

]

10x1

01/

2 HP

[373

]3

Spee

d M

otor

515

1280

[604

]

Wat

ts65

064

063

061

058

056

054

5

Wat

ts45

040

039

538

538

037

537

0

Med

CFM

1515

[715

]15

00 [7

08]

1475

[696

]14

50 [6

84]

1405

[663

]13

50 [6

37]

1275

[602

]

445

1180

[557

]

360

925

[437

]

MPS

-004

AM

ed14

00/1

800

Low

CFM

1210

[571

]11

93 [5

63]

1175

[555

]11

55 [5

45]

1125

[531

]10

75 [5

07]

1015

[479

]

Wat

ts52

551

551

050

549

047

546

0

Cool

Heat

Med

120,

000

[35.

17]

High

Med

135,

000

[39.

56]

100,

000

[29.

31]

Airflow Performance—Direct Drive: MPS-003A, MPS-004A

Com

pone

ntSt

anda

rd In

door

Airf

low

—CF

M [L

/s]

1000

[472

]12

00 [5

66]

1400

[661

]16

00 [7

55]

1800

[850

]20

00 [9

44]

2200

[103

8]24

00 [1

133]

2600

[122

7]28

00 [1

321]

Resi

stan

ce—

Inch

es W

ater

[kPa

]W

et C

oil

.035

.040

.060

.070

.085

.100

.110

.120

.125

.130

Dow

nflo

w.0

55.0

60.0

66.0

72.0

80.0

86.0

93.1

00.1

07.1

15Ec

onom

izer

R.A.

Dam

per

.05

.06

.07

.08

.09

.10

.11

.12

.13

.15

CO

MPO

NEN

T A

IR R

ESIS

TAN

CE

NOTE

S:1.

Perfo

rman

ce sh

own w

ith dr

y coil

& st

anda

rd

1" [2

5.4 m

m] fil

ters

2. St

anda

rd C

FM @

.075

lbs./

cu. ft

.3.

Motor

effic

iency

= 80

% on

208/2

30, 4

60, 5

75 V

. 3-P

hase

4. BH

P =

Watt

s x M

otor E

ff.

746

5. Ad

d com

pone

nt re

sistan

ce to

duct

static

to de

termi

ne to

tal E

.S.P.

[ ]

Des

igna

tes

Met

ric C

onve

rsio

ns

40 McQuay Cat 251-1

DIR

ECT-

DR

IVE

230

AIR

FLO

W P

ERFO

RM

AN

CE

Exte

rnal

Sta

tic P

ress

ure—

Inch

es W

.C. [

kPa]

CFM

[L/s

] Air

Deliv

ery/

RPM

/Wat

ts—

230

Volts

Blow

er S

ize/

Mot

orHP

[w]

# of

Spe

eds

Unit

Mod

el

120,

000

[35.

17]

Mot

or S

peed

From

Fac

tory

Med

Man

ufac

ture

rRe

com

men

ded

Air-F

low

Ran

ge(M

in/M

ax) C

FM

Mot

orSp

eed

High

CFM

1870

[883

]18

30 [8

64]

1790

[845

]17

30 [8

16]

1660

[783

]15

80 [7

46]

1500

[708

]

10x1

01/

2 HP

[373

]3

Spee

d M

otor

135,

000

[39.

56]

High

100,

000

[29.

31]

Med

555

0.1

[.02

]0.

2 [.

05]

0.3

[.07

]0.

4 [.

10]

0.5

[.12

]0.

6 [.

15]

0.7

[.17

]

1375

[649

]

Wat

ts78

076

074

070

066

063

560

0

Low

Heat

ing

Inpu

tBT

U/hr

[kW

]

80,0

00[2

3.45

]W

atts

470

460

455

450

440

435

425

Med

CFM

1685

[795

]16

20 [7

65]

1580

[746

]15

50 [7

32]

1500

[708

]14

30 [6

75]

1350

[637

]

475

1230

[580

]

410

1100

[519

]

MPS

-003

ALo

w10

50/1

350

Low

CFM

1400

[661

]13

75 [6

49]

1360

[642

]13

35 [6

30]

1305

[616

]12

55 [5

92]

1210

[571

]

Wat

ts63

560

058

057

055

053

550

5

High

CFM

1870

[883

]18

30 [8

64]

1790

[845

]17

30 [8

16]

1660

[783

]15

80 [7

46]

1500

[708

]

10x1

01/

2 HP

[373

]3

Spee

d M

otor

555

1375

[649

]

Wat

ts78

076

074

070

066

063

560

0

Wat

ts47

046

045

545

044

043

542

5

Med

CFM

1685

[795

]16

20 [7

65]

1580

[746

]15

50 [7

32]

1500

[708

]14

30 [6

75]

1350

[637

]

475

1230

[580

]

410

1100

[519

]

MPS

-004

AM

ed14

00/1

800

Low

CFM

1400

[661

]13

75 [6

49]

1360

[642

]13

35 [6

30]

1305

[616

]12

55 [5

92]

1210

[571

]

Wat

ts63

560

058

057

055

053

550

5

0.8

[.20

]Co

olHe

at


Com

pone

ntSt

anda

rd In

door

Airf

low

—CF

M [L

/s]

1000

[472

]12

00 [5

66]

1400

[661

]16

00 [7

55]

1800

[850

]20

00 [9

44]

2200

[103

8]24

00 [1

133]

2600

[122

7]28

00 [1

321]

Resi

stan

ce—

Inch

es W

ater

[kPa

]W

et C

oil

.035

.040

.060

.070

.085

.100

.110

.120

.125

.130

Dow

nflo

w.0

55.0

60.0

66.0

72.0

80.0

86.0

93.1

00.1

07.1

15Ec

onom

izer

R.A.

Dam

per

.05

.06

.07

.08

.09

.10

.11

.12

.13

.15

CO

MPO

NEN

T A

IR R

ESIS

TAN

CE

NOTE

S:1.

Perfo

rman

ce sh

own w

ith dr

y coil

& st

anda

rd

1" [2

5.4 m

m] fil

ters

2. St

anda

rd C

FM @

.075

lbs./

cu. ft

.3.

Motor

effic

iency

= 80

% on

208/2

30, 4

60, 5

75 V

. 3-P

hase

4. BH

P =

Watt

s x M

otor E

ff.

746

5. Ad

d com

pone

nt re

sistan

ce to

duct

static

to de

termi

ne to

tal E

.S.P.

[ ]

Des

igna

tes

Met

ric C

onve

rsio

ns

McQuay Cat 251-1 41

DIR

ECT-

DR

IVE

460

AIR

FLO

W P

ERFO

RM

AN

CE

Exte

rnal

Sta

tic P

ress

ure—

Inch

es W

.C. [

kPa]

CFM

[L/s

] Air

Deliv

ery/

RPM

/Wat

ts—

460

Volts

Blow

er S

ize/

Mot

orHP

[w]

# of

Spe

eds

Unit

Mod

el

120,

000

[35.

17]

Mot

or S

peed

From

Fac

tory

Med

Man

ufac

ture

rRe

com

men

ded

Air-F

low

Ran

ge(M

in/M

ax) C

FM

Mot

orSp

eed

High

CFM

1870

[883

]18

30 [8

64]

1790

[845

]17

30 [8

16]

1660

[783

]15

80 [7

46]

1500

[708

]

10x1

01/

2 HP

[373

]3

Spee

d M

otor

100,

000

[29.

31]

135,

000

[39.

56]

High

555

0.1

[.02

]0.

2 [.

05]

0.3

[.07

]0.

4 [.

10]

0.5

[.12

]0.

6 [.

15]

0.7

[.17

]

1375

[649

]

Wat

ts78

076

074

070

066

063

560

0

Low

Heat

ing

Inpu

tBT

U/hr

[kW

]

80,0

00[2

3.45

]W

atts

470

460

455

450

440

435

425

Med

CFM

1685

[795

]16

20 [7

65]

1580

[746

]15

50 [7

32]

1500

[708

]14

30 [6

75]

1350

[637

]

475

1230

[580

]

410

1100

[519

]

MPS

-003

ALo

w10

50/1

350

Low

CFM

1400

[661

]13

75 [6

49]

1360

[642

]13

35 [6

30]

1305

[616

]12

55 [5

92]

1210

[571

]

Wat

ts63

560

058

057

055

053

550

5

High

CFM

1870

[883

]18

30 [8

64]

1790

[845

]17

30 [8

16]

1660

[783

]15

80 [7

46]

1500

[708

]

10x1

01/

2 HP

[373

]3

Spee

d M

otor

555

1375

[649

]

Wat

ts78

076

074

070

066

063

560

0

Wat

ts47

046

045

545

044

043

542

5

Med

CFM

1685

[795

]16

20 [7

65]

1580

[746

]15

50 [7

32]

1500

[708

]14

30 [6

75]

1350

[637

]

475

1230

[580

]

410

1100

[519

]

MPS

-004

AHi

gh14

00/1

800

Low

CFM

1400

[661

]13

75 [6

49]

1360

[642

]13

35 [6

30]

1305

[616

]12

55 [5

92]

1210

[571

]

Wat

ts63

560

058

057

055

053

550

5

0.8

[.20

]Co

olHe

at


Com

pone

ntSt

anda

rd In

door

Airf

low

—CF

M [L

/s]

1000

[472

]12

00 [5

66]

1400

[661

]16

00 [7

55]

1800

[850

]20

00 [9

44]

2200

[103

8]24

00 [1

133]

2600

[122

7]28

00 [1

321]

Resi

stan

ce—

Inch

es W

ater

[kPa

]W

et C

oil

.035

.040

.060

.070

.085

.100

.110

.120

.125

.130

Dow

nflo

w.0

55.0

60.0

66.0

72.0

80.0

86.0

93.1

00.1

07.1

15Ec

onom

izer

R.A.

Dam

per

.05

.06

.07

.08

.09

.10

.11

.12

.13

.15

CO

MPO

NEN

T A

IR R

ESIS

TAN

CE

NOTE

S:1.

Perfo

rman

ce sh

own w

ith dr

y coil

& st

anda

rd

1" [2

5.4 m

m] fil

ters

2. St

anda

rd C

FM @

.075

lbs./

cu. ft

.3.

Motor

effic

iency

= 80

% on

208/2

30, 4

60, 5

75 V

. 3-P

hase

4. BH

P =

Watt

s x M

otor E

ff.

746

5. Ad

d com

pone

nt re

sistan

ce to

duct

static

to de

termi

ne to

tal E

.S.P.

[ ]

Des

igna

tes

Met

ric C

onve

rsio

ns

42 McQuay Cat 251-1

Air

Flow

CFM

[L/s

]

Capa

city

5 To

n [1

7.6

kW]—

13 S

EER

Volta

ge20

8/23

0-46

0—3

Phas

e

2100

[9

91]

860

615

915

655

955

705

1005

760

1040

820

1090

870

1130

910

1170

950

1210

995

1250

1020

1290

1060

1335

1100

1370

1150

1400

1200

——

2200

[103

8]89

568

094

573

599

578

010

3083

010

6088

011

2094

011

5598

011

9510

2012

4010

5512

7511

0013

2011

4013

6011

8013

8512

25—

—

Exte

rnal

Sta

tic P

ress

ure—

Inch

es o

f Wat

er [k

Pa]

——

2300

[108

5]94

075

597

579

510

1583

010

6591

011

0096

511

5010

511

8010

5012

2510

9512

6511

2513

1011

7513

5012

3013

7512

6014

0513

20—

0.1

[.02

]

—

0.2

[.05

]

—

0.3

[.07

]

—

0.4

[.10

]

2400

[113

3]

0.5

[.12

]

970

0.6

[.15

]

825

0.7

[.17

]

1015

0.8

[.20

]

880

0.9

[.22

]

1040

1.0

[.25

]

925

1.1

[.27

]

1095

1.2

[.30

]

1005

1.3

[.32

]

1145

1.4

[.35

]

1055

1.5

[.37

]

1175

1085

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

W14

00

[661

]—

——

—78

037

081

538

587

542

593

046

097

049

010

3054

010

6557

011

0559

511

5061

511

9564

512

3566

013

0070

513

4074

515

00[7

08]

——

——

795

405

840

415

895

440

945

500

995

540

1045

595

1080

615

1135

650

1165

675

1215

700

1255

735

1320

775

1355

805

1600

[7

55]

——

780

390

805

425

870

470

915

510

965

560

1015

600

1060

640

1105

680

1145

705

1180

730

1225

750

1275

790

1340

840

1365

880

1700

[802

]—

—79

545

084

049

089

553

094

057

099

060

510

3564

010

7568

011

2072

511

6075

512

0079

012

4581

513

0085

513

5590

513

7594

018

00[8

50]

780

455

815

470

870

540

915

560

965

615

1010

660

1055

710

1100

760

1140

785

1175

810

1225

850

1260

880

1320

930

1365

985

1390

1020

1900

[897

]80

048

585

053

089

559

094

564

099

567

510

3572

010

7077

511

2081

011

6085

012

0089

012

4591

512

9096

013

3510

0013

7510

5014

0511

0020

00

[944

]83

055

088

060

593

065

597

070

010

1573

010

5579

011

0583

011

4587

511

8091

012

2595

012

6098

013

2010

3513

5010

7513

8511

20—

—

2500

[117

9]10

1591

010

4093

510

9510

4011

4511

0011

7011

4012

0011

7512

6012

1513

0512

7013

6013

5014

0013

95—

——

——

——

——

—12

2511

4012

6011

7513

0012

1013

4012

5513

7013

1514

0013

75—

——

——

—

AIR

FLO

W P

ERFO

RM

AN

CE—

5 TO

N [1

7.6

kW] T

HR

EE P

HA

SE B

ELT

DR

IVE

Driv

e Pa

ckag

eL

MM

otor

H.P.

[W]

3 /4

[559

]1

[746

]Bl

ower

She

ave

6.4"

Pitc

h Di

amet

er6.

4" P

itch

Diam

eter

Mot

or S

heav

e2.

8"-3

.8" P

itch

Diam

eter

—Ad

j.3.

4"-4

.4" P

itch

Diam

eter

—Ad

j.Tu

rns

Open

01

23

45

60

12

34

56

RPM

1095

1040

995

940

890

835

780

1405

1360

1305

1250

1195

1145

1095

NOTE

: L-D

rive l

eft of

bold

line,

M-Dr

ive rig

ht of

bold

line.

NOTE

: Fac

tory s

heav

e sett

ings a

re sh

own i

n bold

print

.

Airflow Performance—Belt Drive: MPS-005A

Com

pone

ntSt

anda

rd In

door

Airf

low

—CF

M [L

/s]

1000

[472

]12

00 [5

66]

1400

[661

]16

00 [7

55]

1800

[850

]20

00 [9

44]

2200

[103

8]24

00 [1

133]

2600

[122

7]28

00 [1

321]

Resi

stan

ce—

Inch

es W

ater

[kPa

]W

et C

oil

.035

.040

.060

.070

.085

.100

.110

.120

.125

.130

Dow

nflo

w.0

55.0

60.0

66.0

72.0

80.0

86.0

93.1

00.1

07.1

15Ec

onom

izer

R.A.

Dam

per

.05

.06

.07

.08

.09

.10

.11

.12

.13

.15

CO

MPO

NEN

T A

IR R

ESIS

TAN

CE

NOTE

S:1.

Perfo

rman

ce sh

own w

ith dr

y coil

& st

anda

rd

1" [2

5.4 m

m] fil

ters

2. St

anda

rd C

FM @

.075

lbs./

cu. ft

.3.

Motor

effic

iency

= 80

% on

208/2

30, 4

60, 5

75 V

. 3-P

hase

4. BH

P =

Watt

s x M

otor E

ff.

746

5. Ad

d com

pone

nt re

sistan

ce to

duct

static

to de

termi

ne to

tal E

.S.P.

[ ]

Des

igna

tes

Met

ric C

onve

rsio

ns

McQuay Cat 251-1 43

Air

Flow

CFM

[L/s

]

Capa

city

6 To

n [2

1.10

kW

]—10

.3 E

ERVo

ltage

208/

230-

460

& 5

75—

3 Ph

ase

2500

[118

0]87

085

591

091

594

597

598

010

2010

2010

8510

4511

4010

8012

0011

1012

6011

3513

0011

7513

9012

0514

5012

3015

3012

5015

8012

9516

30—

—26

00 [1

227]

900

945

940

1005

975

1060

1005

1105

1040

1175

1065

1225

1100

1295

1135

1350

1165

1425

1200

1505

1225

1580

1240

1635

1270

1665

——

Exte

rnal

Sta

tic P

ress

ure—

Inch

es o

f Wat

er [k

Pa]

——

2700

[127

4]93

010

7597

011

0010

0011

4510

3012

0010

6012

6010

9013

3511

2513

9511

5514

7011

8515

4012

2016

1512

3516

7512

5517

30—

——

0.1

[.02

]

—

0.2

[.05

]

—

0.3

[.07

]

—

0.4

[.10

]

2800

[132

1]

0.5

[.12

]

960

0.6

[.15

]

1150

0.7

[.17

]

1000

0.8

[.20

]

1195

0.9

[.22

]

1025

1.0

[.25

]

1240

1.1

[.27

]

1055

1.2

[.30

]

1305

1.3

[.32

]

1085

1.4

[.35

]

1350

1.5

[.37

]

1115

1440

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

W18

00

[850

]—

——

——

—78

556

085

060

589

565

093

067

097

572

010

1076

010

5080

010

9085

011

2089

011

5094

011

8098

012

1010

1519

00

[897

]—

——

—78

558

083

061

587

566

091

570

095

574

099

077

010

2081

510

7085

511

0592

511

3596

011

6510

1511

9510

7512

2011

1520

00

[944

]—

—77

560

081

562

586

067

589

572

093

075

097

580

010

1584

010

5090

010

8594

011

2010

0011

4510

3511

7510

9012

0511

5012

3012

0521

00

[991

]—

—81

065

084

068

088

074

092

078

095

582

099

588

010

3092

010

6596

011

0010

2511

3010

6011

6011

3011

9011

8012

2012

5012

4012

9522

00 [1

038]

780

660

825

700

865

750

910

810

945

850

980

880

1015

930

1050

1000

1080

1045

1120

1100

1145

1160

1180

1220

1205

1260

1230

1330

1255

1380

2300

[108

5]81

572

085

576

089

083

093

087

096

091

010

0096

010

3510

0510

6510

6011

0011

3011

3511

8011

6012

5012

0013

2512

2013

7012

4014

25—

—24

00 [1

133]

845

780

880

835

920

900

950

945

990

990

1025

1050

1055

1110

1085

1155

1120

1215

1150

1335

1185

1355

1220

1430

1235

1470

1255

1525

——

1145

1510

1180

1560

1210

1620

1235

1740

1250

1775

1295

——

——

——

—

AIR

FLO

W P

ERFO

RM

AN

CE—

6 TO

N [2

1.10

kW

] TH

REE

PH

ASE

BEL

T D

RIV

E

Driv

e Pa

ckag

eL

MM

otor

H.P.

[W]

11/2

[111

9]11

/2[1

119]

Blow

er S

heav

e6.

4" P

itch

Diam

eter

6.4"

Pitc

h Di

amet

erM

otor

She

ave

2.8"

-3.8

" Pitc

h Di

amet

er—

Adj.

3.4"

-4.4

" Pitc

h Di

amet

er—

Adj.

Turn

s Op

en0

12

34

56

01

23

45

6RP

M11

0010

5010

0094

589

584

578

012

9512

3011

9511

4511

0010

5010

00NO

TE: F

actor

y she

ave s

etting

s are

show

n in b

old pr

int.

NOTE

: L-D

rive l

eft of

bold

line,

M-Dr

ive rig

ht of

bold

line.


Com

pone

ntSt

anda

rd In

door

Airf

low

—CF

M [L

/s]

1000

[472

]12

00 [5

66]

1400

[661

]16

00 [7

55]

1800

[850

]20

00 [9

44]

2200

[103

8]24

00 [1

133]

2600

[122

7]28

00 [1

321]

Resi

stan

ce—

Inch

es W

ater

[kPa

]W

et C

oil

.035

.040

.060

.070

.085

.100

.110

.120

.125

.130

Dow

nflo

w.0

55.0

60.0

66.0

72.0

80.0

86.0

93.1

00.1

07.1

15Ec

onom

izer

R.A.

Dam

per

.05

.06

.07

.08

.09

.10

.11

.12

.13

.15

CO

MPO

NEN

T A

IR R

ESIS

TAN

CE

NOTE

S:1.

Perfo

rman

ce sh

own w

ith dr

y coil

& st

anda

rd

1" [2

5.4 m

m] fil

ters

2. St

anda

rd C

FM @

.075

lbs./

cu. ft

.3.

Motor

effic

iency

= 80

% on

208/2

30, 4

60, 5

75 V

. 3-P

hase

4. BH

P =

Watt

s x M

otor E

ff.

746

5. Ad

d com

pone

nt re

sistan

ce to

duct

static

to de

termi

ne to

tal E

.S.P.

[ ]

Des

igna

tes

Met

ric C

onve

rsio

ns

44 McQuay Cat 251-1

Airflow Performance—Belt Drive: MPS-007AA

IRFL

OW

PER

FOR

MA

NC

E—7.

5 TO

N [2

6.4

kW]

3100

[146

3]—

——

—71

311

8774

312

4977

213

1180

113

7383

014

3586

014

9788

915

5992

118

1695

019

0197

919

8710

0920

7210

3821

5710

6822

4332

00 [1

510]

——

693

1185

722

1247

751

1309

781

1371

810

1433

839

1495

868

1557

898

1619

928

1880

957

1965

987

2051

1016

2136

1045

2222

1075

2307

3300

[155

7]—

—70

112

4673

113

0776

013

6978

914

3181

814

9384

815

5587

716

1790

618

5993

519

4496

520

2999

421

1510

2322

0010

53

Capa

city

7.5

Ton

[26.

4 kW

]

2286

1082

2371

3400

[160

5]68

112

4471

013

0673

913

6876

914

3079

814

9182

715

53

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

W24

00 [1

133]

——

——

——

——

711

890

740

952

770

1014

799

1076

828

1138

857

1200

887

1261

929

1538

958

1623

987

1709

1017

1794

2500

[118

0]—

——

——

—69

188

872

095

074

910

1277

810

7480

811

3683

711

9886

612

6089

513

2293

616

0296

516

8799

517

7310

2418

5826

00 [1

227]

——

——

——

699

948

729

1010

758

1072

787

1134

816

1196

846

1258

875

1320

914

1581

943

1666

972

1751

1002

1837

1031

1922

2700

[127

4]—

——

——

—70

810

0973

710

7076

611

3279

611

9482

512

5685

413

1888

313

8092

116

4595

017

3098

018

1610

0919

0110

3819

8628

00 [1

321]

——

——

——

717

1069

746

1131

775

1192

804

1254

834

1316

863

1378

892

1440

928

1709

958

1794

987

1880

1016

1965

1046

2050

2900

[136

9]—

——

——

—72

511

2975

511

9178

412

5381

313

1584

213

7687

214

3890

616

8893

617

7396

518

5899

419

4410

2420

2910

5321

1530

00 [1

416]

——

——

705

1127

734

1189

763

1251

792

1313

822

1375

851

1437

880

1498

913

1752

943

1837

972

1923

1002

2008

1031

2093

1060

2179

856

1615

886

1677

913

1923

943

2008

972

2094

1001

2179

1031

2264

1060

2350

1089

2435

3500

[165

2]69

013

0471

913

6674

814

2877

714

9080

715

5283

616

1386

516

7589

417

3792

019

8795

020

7297

921

5810

0922

4310

3823

2810

6724

1410

9724

9936

00 [1

699]

698

1364

728

1426

757

1488

786

1550

815

1612

844

1674

874

1735

903

1797

928

2051

957

2136

986

2222

1016

2307

1045

2393

1075

2478

1104

2563

Air

Flow

CFM

[L/s

]

1097

2328

1126

2414

1156

2499

1104

2392

1134

2478

1163

2563

1111

2456

1141

2542

1170

2627

RPM

WRP

MW

RPM

W10

4618

7910

7519

6511

0520

5010

5319

4410

8320

2911

1221

1410

6120

0810

9020

9311

1921

7810

6820

7210

9721

5711

2722

4310

7521

3611

0422

2111

3423

0710

8222

0011

1222

8511

4123

7110

9022

6411

1923

5011

4824

35

1126

2585

1155

2670

1185

2756

1119

2521

1148

2606

1178

2691

1133

2649

1163

2734

1192

2820

0.3

[.07

]0.

4 [.

10]

0.5

[.12

]0.

6 [.

15]

0.7

[.17

]0.

8 [.

20]

0.9

[.22

]1.

0 [.

25]

1.1

[.27

]1.

2 [.

30]

1.3

[.32

]1.

4 [.

35]

1.5

[.37

]1.

6 [.

40]

1.7

[.42

]1.

8 [.

45]

1.9

[.47

]2.

0 [.

50]

Exte

rnal

Sta

tic P

ress

ure—

Inch

es o

f Wat

er [k

Pa]

Driv

e Pa

ckag

eL

MM

otor

H.P.

[W]

2.0

[149

1.4]

3.0

[223

7.1]

Blow

er S

heav

eBK

90BK

65M

otor

She

ave

1VP-

441V

P-44

Turn

s Op

en1

23

45

61

23

45

6RP

M86

983

880

677

474

271

011

5711

0610

5610

0595

490

4

NOTE

S: 1.

Fac

tory s

heav

e sett

ings a

re sh

own i

n bold

print

.2.

Re-a

djustm

ent o

f she

ave r

equir

ed to

achie

ve ra

ted ai

rflow

at AR

I mini

mum

E.S.

P.

3. Do

not o

pera

te ab

ove b

lower

RPM

show

n as m

otor o

verlo

ading

will

occu

r.

4. Do

not s

et mo

tor sh

eave

below

one t

urn o

pen.

NOTE

: L-D

rive l

eft of

bold

line,

M-Dr

ive rig

ht of

bold

line.

AIR

FLO

W C

OR

REC

TIO

N F

AC

TOR

S7.

5 TO

N [2

6.4

kW] 0.

980.

99TO

TAL

MBH

0.99

0.97

0.97

3000

[141

6]1.

001.

01

1.00

0.99

1.02

3400

[160

5]

POW

ER k

W1.

000.

991.

00

3200

[151

0]

0.94

SENS

IBLE

MBH

0.91

2800

[132

1]AC

TUAL

—CF

M[L

/s]

2600

[122

7]1.

02

1.01

1.05

3600

[169

9]1.

03

1.02

1.08

3800

[179

3]

CO

MPO

NEN

T A

IR R

ESIS

TAN

CE

7.5

TON

S [2

6.4

kW]

Com

pone

nt

Stan

dard

Indo

or A

irflo

w—

CFM

[L/s

]24

00[1

133]

2600

[122

7]28

00[1

321]

3000

[141

6]32

00[1

510]

3400

[160

4]36

00[1

699]

Resi

stan

ce—

Inch

es W

ater

[kPa

]

Wet

Coi

l0.

047

[0.0

12]

0.05

1[0

.013

]0.

055

[0.0

14]

0.06

0[0

.015

]0.

065

[0.0

16]

0.07

1[0

.018

]0.

076

[0.0

19]

Econ

omize

r10

0% R

.A. D

ampe

r Ope

n0.

05[0

.012

]0.

06[0

.015

]0.

07[0

.017

]0.

08[0

.020

]0.

09[0

.022

]0.

10[0

.025

]0.

11[0

.027

]Ho

rizon

tal E

cono

mize

r10

0% R

.A. D

ampe

r Ope

n0.

03[0

.007

]0.

04[0

.009

]0.

04[0

.010

]0.

05[0

.011

]0.

05[0

.012

]0.

06[0

.014

]0.

06[0

.015

]Ho

rizon

tal E

cono

mize

r 10

0% O

.A. D

ampe

r Ope

n0.

08[0

.020

]0.

08[0

.020

]0.

08[0

.020

]0.

10[0

.024

]0.

11[0

.027

]0.

12[0

.030

]0.

13[0

.032

]

NOTE

: Add

comp

onen

t res

istan

ce to

duct

resis

tance

to de

termi

ne to

tal ex

terna

l stat

ic pr

essu

re.

DNA

= Da

ta no

t Ava

ilable

.

NOTE

S: 1.

Mult

iply c

orre

ction

facto

r tim

es gr

oss p

erfor

manc

e data

.2.

Resu

lting s

ensib

le ca

pacit

y can

not e

xcee

d tota

l cap

acity

.

[ ]

Des

igna

tes

Met

ric C

onve

rsio

ns

McQuay Cat 251-1 45


IRFL

OW

PER

FOR

MA

NC

E—8.

5 TO

N [2

9.9

kW]

1060

2350

1089

3400

[160

5]—

——

—68

112

4471

013

0673

913

6876

914

3079

814

9182

715

5385

616

1588

616

7791

319

2394

320

0897

220

9410

0121

7910

3122

6435

00 [1

652]

——

673

1270

690

1304

719

1366

748

1428

777

1490

807

1552

836

1613

865

1675

894

1737

920

1987

950

2072

979

2158

1009

2243

2435

1038

2328

3600

[169

9]—

—68

613

5269

813

6472

814

2675

714

8878

615

5081

516

1284

416

7487

417

3590

317

9792

820

5195

721

3698

622

2210

1623

0710

4523

9337

00 [1

746]

672

1361

700

1435

727

1510

755

1584

782

1659

810

1733

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

W27

00 [1

274]

——

——

——

——

——

708

1009

737

1070

766

1132

796

1194

825

1256

854

1318

883

1380

921

1645

950

1730

980

1816

2800

[132

1]—

——

——

——

——

—71

710

6974

811

3177

511

9280

412

5483

413

1686

313

7889

214

4092

817

0995

817

9498

718

8029

00 [1

369]

——

——

——

——

——

725

1129

755

1191

784

1253

813

1315

842

1376

872

1438

906

1688

936

1773

965

1858

994

1944

3000

[141

6]—

——

——

——

—70

511

2773

411

8976

312

5179

213

1382

213

7585

114

3788

014

9891

317

5294

318

3797

219

2310

0220

0831

00 [1

463]

——

——

——

——

713

1187

743

1249

772

1311

801

1373

830

1435

860

1497

889

1559

921

1816

950

1961

979

987

1009

2072

3200

[151

0]—

——

——

—69

311

8572

212

4776

113

0978

113

7181

014

3383

914

9586

815

5789

816

1992

818

8093

719

6598

720

5110

1821

3633

00 [1

557]

——

——

——

701

1246

731

1307

760

1369

789

1431

818

1493

848

1555

877

1617

906

1856

935

1944

968

2029

994

2115

1023

2200

3800

[179

3]68

614

4371

315

1874

115

9276

816

6779

617

4182

318

1685

118

9087

819

6594

020

0396

020

7598

121

8910

0123

0210

1624

1610

4325

2910

6226

4383

718

0886

518

8293

318

9695

319

5697

320

7099

321

8310

0222

9710

3024

1010

5425

24

4000

[188

8]71

316

0974

016

8376

817

5879

518

3282

319

0785

019

8187

820

5693

520

8595

521

9997

523

1299

624

2610

1625

3910

4326

5310

7027

6710

7728

80

1119

2521

1067

2414

1097

2499

1126

2585

1071

2478

1104

2563

1133

2649

RPM

WRP

MW

RPM

W10

0919

0110

3819

6610

6820

7210

1619

6510

4620

5010

7521

3610

2420

2910

5321

1510

8222

0010

3120

9310

6021

7910

9022

6410

3821

5710

6822

4310

9723

2810

4522

2210

7523

0711

0423

9210

5322

8610

8223

7111

1124

56

1082

2756

1119

2870

1147

2983

1075

2637

1111

2751

1140

2864

1097

2994

1135

3107

——

Capa

city

8.5

Ton

[29.

9 kW

]

3900

[184

1]69

915

2672

716

0175

416

7578

217

5080

918

2483

718

9986

419

7392

720

1594

820

8096

821

9498

823

0710

0824

2110

2925

3410

5726

4810

6927

6110

9028

7511

2729

88—

—

4100

[193

5]72

616

9275

417

6678

118

4180

919

1583

619

9086

420

6492

220

9194

222

0496

323

1898

324

3110

0325

4510

2426

5810

5627

7210

8428

8510

8429

9911

0531

1211

4432

26—

—

Air

Flow

CFM

[L/s

]

1148

2606

——

——

——

——

——

RPM

WRP

MW

1097

2157

1127

2243

1104

2221

1134

2307

1112

2285

1141

2371

1119

2350

1148

2435

1126

2414

——

1134

2478

——

1141

2542

——

——

——

——

——

——

——

——

——

——

——

0.1

[.02

]0.

2 [.

05]

0.3

[.07

]0.

4 [.

10]

0.5

[.12

]0.

6 [.

15]

0.7

[.17

]0.

8 [.

20]

0.9

[.22

]1.

0 [.

25]

1.1

[.27

]1.

2 [.

30]

1.3

[.32

]1.

4 [.

35]

1.5

[.37

]1.

6 [.

40]

1.7

[.42

]1.

8 [.

45]

1.9

[.47

]2.

0 [.

50]

Exte

rnal

Sta

tic P

ress

ure—

Inch

es o

f Wat

er [k

Pa]

Driv

e Pa

ckag

eL

MM

otor

H.P.

[W]

2.0

[149

1.4]

3.0

[223

7.1]

Blow

er S

heav

eBK

90BK

65M

otor

She

ave

1VP-

441V

P-44

Turn

s Op

en1

23

45

61

23

45

6RP

M86

082

479

175

772

369

011

4810

9810

4999

994

989

9

NOTE

S: 1.

Fac

tory s

heav

e sett

ings a

re sh

own i

n bold

print

.2.

Re-a

djustm

ent o

f she

ave r

equir

ed to

achie

ve ra

ted ai

rflow

at AR

I mini

mum

E.S.

P.

3. Do

not o

pera

te ab

ove b

lower

RPM

show

n as m

otor o

verlo

ading

will

occu

r.

4. Do

not s

et mo

tor sh

eave

below

one t

urn o

pen.

NOTE

: L-D

rive l

eft of

bold

line,

M-Dr

ive rig

ht of

bold

line.

AIR

FLO

W C

OR

REC

TIO

N F

AC

TOR

S8.

5 TO

N [2

9.9

kW] 0.

980.

99TO

TAL

MBH

0.96

1.00

0.97

0.97

3200

[151

0]1.

001.

01

1.01

0.99

1.03

3600

[169

9]

POW

ER k

W0.

991.

000.

991.

00

3400

[160

5]1.

03

1.02

1.07

4000

[188

8]1.

04

1.03

0.94

1.09

4200

[198

2]

SENS

IBLE

MBH

1.02

1.01

1.05

0.88

3800

[179

3]

0.91

3000

[141

6]AC

TUAL

—CF

M[L

/s]

2600

[122

7]28

00[1

321]

CO

MPO

NEN

T A

IR R

ESIS

TAN

CE

8.5

TON

[29.

9 kW

]

Com

pone

nt

Stan

dard

Indo

or A

irflo

w—

CFM

[L/s

]26

00[1

227]

2800

[132

1]30

00[1

416]

3200

[151

0]34

00[1

604]

3600

[169

9]38

00[1

793]

Resi

stan

ce—

Inch

es W

ater

[kPa

]

Horiz

onta

l Eco

nom

izer

100%

O.A

. Dam

per O

pen

0.08

[0.0

20]

0.08

[0.0

20]

0.10

[0.0

24]

0.11

[0.0

27]

0.12

[0.0

30]

0.13

[0.0

32]

Wet

Coi

l0.

051

[0.0

13]

0.05

5[0

.014

]0.

060

[0.0

15]

0.06

5[0

.016

]0.

071

[0.0

18]

0.07

6[0

.019

]0.

082

[0.0

20]

0.15

[0.0

36]

Econ

omize

r10

0% R

.A. D

ampe

r Ope

n0.

06[0

.015

]0.

07[0

.017

]0.

08[0

.020

]0.

09[0

.022

]0.

10[0

.025

]0.

11[0

.027

]0.

12[0

.030

]Ho

rizon

tal E

cono

mize

r10

0% R

.A. D

ampe

r Ope

n0.

04[0

.009

]0.

04[0

.010

]0.

05[0

.011

]0.

05[0

.012

]0.

06[0

.014

]0.

06[0

.015

]0.

07[0

.017

]

4000

[188

8]

0.08

7[0

.022

]

0.16

[0.0

40]

0.13

[0.0

32]

0.08

[0.0

20]

4200

[198

2]

0.09

3[0

.023

]

0.18

[0.0

44]

0.14

[0.0

35]

0.09

[0.0

21]

NOTE

: Add

comp

onen

t res

istan

ce to

duct

resis

tance

to de

termi

ne to

tal ex

terna

l stat

ic pr

essu

re.

DNA

= Da

ta no

t Ava

ilable

.

NOTE

S: 1.

Mult

iply c

orre

ction

facto

r tim

es gr

oss p

erfor

manc

e data

.2.

Resu

lting s

ensib

le ca

pacit

y can

not e

xcee

d tota

l cap

acity

.

[ ]

Des

igna

tes

Met

ric C

onve

rsio

ns

46 McQuay Cat 251-1


1090

2875

1110

3900

[184

1]69

915

2672

716

0175

416

7578

217

5080

918

2483

718

9986

419

7392

720

1594

820

8096

821

9498

823

0710

0824

2110

2925

3410

5726

4810

6927

6140

00 [1

888]

713

1609

740

1683

768

1758

795

1832

823

1907

850

1961

878

2056

935

2085

955

2199

975

2312

996

2426

1016

2539

1043

2653

1070

2767

2988

1077

2880

4100

[193

5]72

616

9275

417

6678

118

4180

919

1583

619

9086

420

6492

220

9194

222

0496

323

1898

324

3110

0325

4510

2426

5810

5627

7210

8428

8510

8429

9942

00 [1

982]

740

1774

767

1849

795

1923

822

1998

850

2072

877

2147

Exte

rnal

Sta

tic P

ress

ure—

Inch

es o

f Wat

er [k

Pa]

3200

[151

0]—

——

——

—65

711

7071

512

4574

213

1977

013

9479

714

6882

515

4385

216

1788

016

9295

616

9897

617

0399

618

1710

1719

3033

00 [1

557]

——

——

673

1179

701

1253

728

1328

756

1402

783

1477

811

1551

838

1626

866

1700

943

1705

963

1708

948

1822

976

1935

1024

2049

3400

[160

5]—

——

—68

712

6171

413

3674

214

1076

914

8579

715

5982

416

3485

217

0887

917

6395

018

1197

118

2796

219

4198

920

5410

3221

6835

00 [1

652]

——

673

1270

700

1344

728

1419

755

1493

783

1588

810

1642

838

1717

865

1791

938

1813

958

1832

978

1946

975

2059

1003

2173

1039

2286

3600

[169

9]—

—68

613

5271

414

2774

115

0176

915

7679

616

5082

417

2585

117

9987

918

7494

518

9296

619

5198

620

6598

921

7810

1622

9210

4724

0537

00 [1

746]

672

1361

700

1435

727

1510

755

1584

782

1659

810

1733

837

1808

865

1882

933

1896

953

1956

973

2070

993

2183

1002

2297

1030

2410

1054

2524

3800

[179

3]68

614

4371

315

1874

115

9276

816

6779

617

4182

318

1886

118

9087

819

6594

020

0396

020

7598

121

8910

0123

0210

1624

1610

4325

2910

6226

43

4300

[202

9]75

318

5778

119

3280

820

0683

620

8185

321

5591

722

1593

723

2895

724

4297

825

5599

826

6910

1827

8210

3928

9610

8330

0911

1131

2310

9932

3693

022

0995

023

2397

024

3899

025

5010

1126

6310

3127

7710

7028

9010

9730

0410

9231

17

4700

[221

8]80

721

8883

522

6386

223

3790

624

6292

725

7694

726

8996

728

0398

829

1610

0830

3010

2831

4310

4832

5710

6933

7111

3734

8411

6535

9811

3037

11

1130

3102

1097

2994

1117

3107

1138

3221

1105

3112

1125

3226

1145

3339

1037

2044

1057

2157

1077

2271

1044

2162

1065

2276

1085

2390

1052

2281

1072

2395

1092

2508

1059

2400

1080

2513

1100

2627

1067

2519

1087

2632

1108

2746

1075

2637

1095

2751

1115

2864

1082

2756

1102

2870

1123

2983

1120

3350

1140

3453

1160

3577

1112

3231

1133

3345

1153

3458

1150

3825

1170

3938

1190

4052

1191

3442

—11

5032

1511

7133

2911

5833

34—

1178

3448

1166

3453

1186

3566

1098

2384

1118

2498

1105

2503

1125

2617

1113

2622

1133

2735

1120

2740

1141

2854

1128

2859

1148

2973

1135

2978

1156

3091

1143

3097

1163

3210

1181

3690

——

1173

3572

1193

3685

——

——

——

1199

3561

——

——

——

——

——

1138

2611

1159

2725

1179

2838

1146

2730

1166

2844

1186

2957

1153

2849

1174

2962

1194

3076

1161

2968

1181

3081

——

1168

3086

1189

3200

——

1176

3205

1196

3318

——

1183

3324

——

——

——

——

——

——

——

——

——

——

——

4400

[207

7]76

719

4079

420

1482

220

8984

921

6387

722

3892

423

3394

524

4796

525

6098

526

7410

0627

8710

2629

0110

4630

1410

9731

2811

2432

4111

0733

5545

00 [2

124]

780

2023

808

2097

835

2172

863

2248

912

2338

1188

932

2452

4600

[217

1]79

421

0582

121

8084

022

5487

623

2991

924

5794

025

7196

026

8498

027

9810

0029

1110

2130

2510

4131

3810

6132

5211

2433

6511

5134

7911

2235

9295

225

8597

326

7999

327

9310

1329

0610

3330

2010

5431

3311

1032

4711

3833

6011

1534

7438

09—

1127

3468

1148

3582

1168

3695

—

1142

3706

1163

3819

1183

3933

1135

3587

1155

3701

1175

3814

——

——

1196

3928

——

——

——

——

——

——

——

——

——

——

4800

[226

5]82

122

7184

823

4587

624

2091

425

8193

426

9595

528

0897

529

2299

530

3510

1531

4910

3632

6210

5633

7610

7634

8911

5136

0311

7837

1611

3738

3011

5739

4311

7840

5711

9841

70—

——

——

——

——

—

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

W0.

1 [.

02]

0.2

[.05

]0.

3 [.

07]

0.4

[.10

]0.

5 [.

12]

0.6

[.15

]0.

7 [.

17]

0.8

[.20

]0.

9 [.

22]

1.0

[.25

]1.

1 [.

27]

1.2

[.30

]1.

3 [.

32]

1.4

[.35

]1.

5 [.

37]

RPM

1.6

[.40

]1.

7 [.

42]

1.8

[.45

]W

RPM

WRP

MW

RPM

W1.

9 [.

47]

2.0

[.50

]2.

1 [.

52]

2.2

[.55

]2.

3 [.

57]

Air

Flow

CFM

[L/s

]

Capa

city

10 T

on [3

5.2

kW]

AIR

FLO

W P

ERFO

RM

AN

CE—

10 T

ON

[35.

2 kW

]

Driv

e Pa

ckag

eL

MM

otor

H.P.

[W]

2.0

[149

1.4]

3.0

[223

7.1]

Blow

er S

heav

eBK

90BK

65M

otor

She

ave

1VP-

441V

P-44

Turn

s Op

en1

23

45

61

23

45

6RP

M84

581

077

573

970

466

911

3810

8910

4199

294

389

4

NOTE

S: 1.

Fac

tory s

heav

e sett

ings a

re sh

own i

n bold

print

.2.

Re-a

djustm

ent o

f she

ave r

equir

ed to

achie

ve ra

ted ai

rflow

at AR

I mini

mum

E.S.

P.

3. Do

not o

pera

te ab

ove b

lower

RPM

show

n as m

otor o

verlo

ading

will

occu

r.

4. Do

not s

et mo

tor sh

eave

below

one t

urn o

pen.

NOTE

: L-D

rive l

eft of

bold

line,

M-Dr

ive rig

ht of

bold

line.

AIR

FLO

W C

OR

REC

TIO

N F

AC

TOR

S10

TO

N [3

5.2

kW]

0.98

0.99

TOTA

L M

BH0.

96

0.99

0.97

0.97

3800

[179

3]1.

001.

01

1.00

0.99

1.02

4200

[198

2]

POW

ER k

W0.

981.

000.

981.

00

4000

[188

8]1.

03

1.01

1.07

4600

[217

1]

0.95

SENS

IBLE

MBH

0.91

0.93

3600

[169

9]AC

TUAL

—CF

M[L

/s]

3200

[151

0]34

00[1

605]

1.04

1.01

1.09

4800

[226

5]1.

02

1.01

1.05

4400

[207

7]

CO

MPO

NEN

T A

IR R

ESIS

TAN

CE

10 T

ON

[35.

2 kW

]

Com

pone

nt

Stan

dard

Indo

or A

irflo

w—

CFM

[L/s

]32

00[1

510]

3400

[160

4]36

00[1

699]

3800

[179

3]40

00[1

888]

4200

[198

2]44

00[2

076]

Resi

stan

ce—

Inch

es W

ater

[kPa

]

Horiz

onta

l Eco

nom

izer

100%

O.A

. Dam

per O

pen

0.11

[0.0

27]

0.12

[0.0

30]

0.13

[0.0

32]

0.15

[0.0

.36]

0.16

[0.0

40]

0.18

[0.0

44]

Wet

Coi

l0.

065

[0.0

16]

0.07

1[0

.018

]0.

076

[0.0

19]

0.08

2[0

.020

]0.

087

[0.0

22]

0.09

3[0

.023

]0.

099

[0.0

25]

0.19

[0.0

47]

Econ

omize

r10

0% R

.A. D

ampe

r Ope

n0.

09[0

.022

]0.

10[0

.025

]0.

11[0

.027

]0.

12[0

.030

]0.

13[0

.032

]0.

14[0

.035

]0.

15[0

.037

]

4600

[217

1]

0.10

5[0

.026

]

0.20

[0.5

0]

0.16

[0.0

40]

0.10

[0.0

24]

4800

[226

5]

Horiz

onta

l Eco

nom

izer

100%

R.A

. Dam

per O

pen

0.05

[0.0

12]

0.06

[0.0

14]

0.06

[0.0

15]

0.07

[0.0

17]

0.08

[0.0

20]

0.09

[0.0

21]

0.09

[0.0

22]

0.11

0[0

.027

]

0.21

[0.0

52]

0.17

[0.0

42]

0.10

[0.0

25]

NOTE

: Add

comp

onen

t res

istan

ce to

duct

resis

tance

to de

termi

ne to

tal ex

terna

l stat

ic pr

essu

re.

DNA

= Da

ta no

t Ava

ilable

.

NOTE

S: 1.

Mult

iply c

orre

ction

facto

r tim

es gr

oss p

erfor

manc

e data

.2.

Resu

lting s

ensib

le ca

pacit

y can

not e

xcee

d tota

l cap

acity

.

[ ]

Des

igna

tes

Met

ric C

onve

rsio

ns

McQuay Cat 251-1 47


IRFL

OW

PER

FOR

MA

NC

E—12

.5 T

ON

[44

kW)

1181

3717

1200

4600

[217

1]—

—90

821

3192

722

4494

723

5796

624

7098

625

8410

0526

9710

2528

1010

4429

2410

6430

3710

8331

5011

0332

6311

2233

7711

4234

9011

6136

0347

00 [2

218]

903

2178

922

2291

941

2404

961

2517

980

2631

1000

2744

1019

2857

1039

2970

1058

3084

1078

3197

1097

3310

1117

3424

1136

3537

1156

3650

3830

1175

3763

4800

[226

5]91

723

4593

724

5895

625

7197

626

8499

527

9810

1429

1110

3430

2410

5331

3810

7332

5110

9233

6411

1234

7711

3135

9111

5137

0411

70

1239

3817

5100

[240

7]

1190

963

3930

2889

4900

[231

3]

982

932

3002

2519

1002

951

3116

2632

1021

971

3229

2745

1041

990

3342

2859

1060

1010

3456

2972

1079

1029

3085

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

W38

00 [1

793]

——

——

——

——

——

——

902

1649

922

1762

941

1875

961

1989

980

2102

1000

2215

1019

2328

1039

2442

1058

2555

4000

[188

8]—

——

——

——

——

—90

717

6192

618

7494

619

8796

521

0198

522

1410

0423

2710

2424

4010

4325

5410

6326

6710

8227

8041

00 [1

935]

——

——

——

——

900

1769

919

1882

939

1996

958

2109

978

2222

997

2335

1016

2449

1036

2562

1055

2675

1075

2788

1094

2902

4200

[198

2]—

——

——

——

—91

218

9793

220

1095

121

2397

122

3699

023

5010

1024

6310

2925

7610

4926

8910

6828

0310

8829

1611

0730

2943

00 [2

029]

——

——

——

906

1917

925

2030

945

2144

964

2257

984

2370

1003

2483

1023

2597

1042

2710

1062

2823

1081

2937

1101

3050

1120

3163

4400

[207

7]—

——

—90

019

4491

920

5793

921

7095

822

8497

823

9799

725

1010

1726

2410

3627

3710

5628

5010

7529

6310

9530

7711

1431

9011

3333

0345

00 [2

124]

——

——

913

2091

933

2204

952

2317

972

2430

991

2544

1011

2657

1030

2770

1050

2884

1069

2997

1089

3110

1108

3223

1128

3337

1147

3450

5000

[236

0]94

727

0096

728

1498

629

2710

0630

4010

2531

5310

4532

6710

6433

8010

8334

9311

0336

0711

2237

2011

4238

3311

6139

4611

8140

6012

0041

7312

2042

8610

4931

9910

6833

1210

8834

2511

0735

3811

2736

5211

4637

6511

6638

7811

8539

9112

0541

05

5200

[245

4]97

830

8699

831

9910

1733

1210

3734

2510

5635

3910

7636

5210

9537

6511

1538

7911

3439

9211

5441

0511

7342

1811

9343

3212

1244

4512

3245

5812

5146

7235

69

4056

1220

3943

1195

3877

1214

3990

1234

4103

1209

4044

1229

4157

1248

4270

1099

3682

1118

RPM

WRP

MW

RPM

W10

7826

6810

9727

8111

1728

9511

0228

9411

2130

0711

4031

2011

1430

1511

3331

2811

5332

4211

2731

4311

4632

5611

6633

6911

4032

7611

5933

9011

7935

0311

5334

1711

7235

3011

9236

4311

6735

6311

8836

7812

0637

90

1239

4399

1259

4513

1278

4626

1224

4218

1244

4331

1263

4445

1271

4785

1290

4898

1310

5011

Capa

city

12.5

Ton

[44

kW]

3795

1258

1138

3909

1157

4022

1177

4135

1196

4249

1216

4362

1235

4475

1255

4588

1274

4702

1294

4815

5300

[250

1]99

432

9010

1434

0310

3335

1610

5336

3010

7237

4310

9238

5611

1139

6911

3140

8311

5041

9611

7043

0911

8944

2312

0945

3612

2846

4912

4847

6212

6748

7612

8749

89—

——

—

Air

Flow

CFM

[L/s

]

4170

1253

4216

1273

4330

1266

4384

1287

4497

RPM

WRP

MW

1136

3008

1156

3121

1160

3233

1179

3347

1172

3355

1192

3468

1185

3482

1205

3596

1198

3616

1218

3729

1211

3756

1231

3870

1225

3903

1245

4016

1298

4739

1317

4853

1283

4558

1302

4671

——

——

1313

4928

——

——

——

0.1

[.02

]0.

2 [.

05]

0.3

[.07

]0.

4 [.

10]

0.5

[.12

]0.

6 [.

15]

0.7

[.17

]0.

8 [.

20]

0.9

[.22

]1.

0 [.

25]

1.1

[.27

]1.

2 [.

30]

1.3

[.32

]1.

4 [.

35]

1.5

[.37

]1.

6 [.

40]

1.7

[.42

]1.

8 [.

45]

1.9

[.47

]2.

0 [.

50]

Exte

rnal

Sta

tic P

ress

ure—

Inch

es o

f Wat

er [k

Pa]

5600

[264

3]10

4539

50

5400

[254

9]

1064

1011

4063

3502

1083

1030

4176

3615

1103

1050

4290

3728

1122

1069

4403

3842

1142

1089

4516

3955

1161

1108

4068

5500

[259

6]10

2837

2210

4738

3510

6639

4810

8640

6211

0541

7511

2542

8811

4444

0111

6445

1511

8346

2812

0347

4112

2248

5512

4249

68—

——

——

—11

2841

8111

4742

9511

6744

0811

8645

2112

0646

3512

2547

4812

4548

6112

6449

74—

—

5700

[269

0]10

6241

8610

8143

0011

0144

1311

2045

2611

4046

3911

5947

5311

7948

6611

9849

79—

——

——

——

——

——

——

—46

3011

8147

4312

00—

——

——

——

——

——

—

——

——

——

4856

1220

4969

——

——

——

——

——

——

——

——

5800

[273

7]10

7944

3110

9945

4411

1846

5811

3847

7111

5748

8411

7749

98—

——

——

——

——

——

——

——

——

——

——

——

—

——

——

——

——

——

——

——

——

——

——

Driv

e Pa

ckag

eL

MM

otor

H.P.

[W]

3.0

[223

7.1]

5.0

[372

8.5]

Blow

er S

heav

eBK

65BK

65M

otor

She

ave

1VP-

441V

M-5

0Tu

rns

Open

12

34

56

12

34

56

RPM

1135

1087

1038

990

942

894

1283

1231

1178

1126

1074

1022

NOTE

S: 1.

Fac

tory s

heav

e sett

ings a

re sh

own i

n bold

print

.2.

Re-a

djustm

ent o

f she

ave r

equir

ed to

achie

ve ra

ted ai

rflow

at AR

I mini

mum

E.S.

P.

3. Do

not o

pera

te ab

ove b

lower

RPM

show

n as m

otor o

verlo

ading

will

occu

r.

4. Do

not s

et mo

tor sh

eave

below

one t

urn o

pen.

NOTE

: L-D

rive l

eft of

bold

line,

M-Dr

ive rig

ht of

bold

line.

AIR

FLO

W C

OR

REC

TIO

N F

AC

TOR

S12

.5 T

ON

[44

kW]

0.97

0.98

TOTA

L M

BH0.

95

0.99

0.96

0.94

4400

[207

7]0.

991.

00

1.00

0.99

1.00

4800

[226

5]

POW

ER k

W0.

980.

990.

980.

97

4600

[217

1]1.

01

1.00

1.03

5000

[236

0]

0.91

SENS

IBLE

MBH

0.85

0.88

4200

[198

2]AC

TUAL

—CF

M[L

/s]

3800

[179

3]40

00[1

888]

1.01

1.05

1.02

5200

[245

4]

1.02

1.07

1.03

5400

[254

9]

1.02

1.09

1.04

5600

[264

3]

1.03

1.11

1.05

5800

[273

7 ]

CO

MPO

NEN

T A

IR R

ESIS

TAN

CE

12.5

TO

N [4

4 kW

]

Com

pone

nt

Stan

dard

Indo

or A

irflo

w—

CFM

[L/s

]38

00[1

793]

4000

[188

8]42

00[1

982]

4400

[207

6]46

00[2

171]

4800

[226

5]50

00[2

359]

Resi

stan

ce—

Inch

es W

ater

[kPa

]

Horiz

onta

l Eco

nom

izer

100%

O.A

. Dam

per O

pen

0.15

[0.0

36]

0.16

[0.0

40]

0.18

[0.4

4]0.

19[0

.047

]0.

20[0

.050

]0.

21[0

.052

]

Wet

Coi

l0.

082

[0.0

20]

0.08

7[0

.022

]0.

093

[0.0

23]

0.09

9[0

.025

]0.

105

[0.0

26]

0.11

0[0

.027

]0.

115

[0.0

29]

0.21

[0.0

52]

Econ

omize

r10

0% R

.A. D

ampe

r Ope

n0.

12[0

.030

]0.

13[0

.032

]0.

14[0

.035

]0.

15[0

.037

]0.

16[0

.040

]0.

17[0

.042

]0.

18[0

.045

]Ho

rizon

tal E

cono

mize

r10

0% R

.A. D

ampe

r Ope

n0.

07[0

.017

]0.

08[0

.020

]0.

09[0

.021

]0.

09[0

.022

]0.

10[0

.024

]0.

10[0

.025

]0.

10[0

.024

]0.

21[0

.052

]

0.09

[0.0

22]

0.19

[0.0

47]

0.12

0[0

.030

]

5200

[245

4]

0.22

[0.0

55]

0.10

[0.0

25]

0.20

[0.0

50]

0.12

5[0

.031

]

5400

[254

8]

0.23

[0.0

57]

0.12

[0.0

30]

0.21

[0.0

52]

0.13

1[0

.033

]

5600

[264

3]

0.24

[0.0

60]

0.14

[0.0

35]

0.22

[0.0

55]

0.13

6[0

.034

]

5800

[273

7]

NOTE

: Add

comp

onen

t res

istan

ce to

duct

resis

tance

to de

termi

ne to

tal ex

terna

l stat

ic pr

essu

re.

DNA

= Da

ta no

t Ava

ilable

.

NOTE

S: 1.

Mult

iply c

orre

ction

facto

r tim

es gr

oss p

erfor

manc

e data

.2.

Resu

lting s

ensib

le ca

pacit

y can

not e

xcee

d tota

l cap

acity

.

[ ]

Des

igna

tes

Met

ric C

onve

rsio

ns

48 McQuay Cat 251-1

AIR

FLO

W P

ERFO

RM

AN

CE—

15 T

ON

[52.

8 kW

]

Driv

e Pa

ckag

eL

MM

otor

H.P.

[W]

3.0

[223

7.1]

5.0

[372

8.4]

Blow

er S

heav

eBK

90BK

72M

otor

She

ave

1VP-

441V

P-44

Turn

s Op

en1

23

45

61.

52

34

56

RPM

823

787

750

710

670

629

1022

1017

1006

933

860

786

NOTE

: L-D

rive l

eft of

bold

line,

M-Dr

ive rig

ht of

bold

line.

NOTE

S: 1.

Mult

iply c

orre

ction

facto

r tim

es gr

oss p

erfor

manc

e data

. [

] D

esig

nate

s M

etric

Con

vers

ions

2. Re

sultin

g sen

sible

capa

city c

anno

t exc

eed t

otal c

apac

ity.

.970

.982

TOTA

L M

BTUH

.995

.964

.953

5400

[254

9].9

941.

006

1.00

4.9

901.

016

6200

[292

6]

POW

ER k

W.9

99.9

88.9

84

5800

[273

7]

.922

SENS

IBLE

MBT

UH.9

07

5000

[236

0]AC

TUAL

—CF

M[L

/s]

4800

[226

5]1.

018

1.00

91.

047

6600

[311

5]1.

030

1.01

41.

078

7000

[330

4]1.

036

1.01

61.

093

7200

[339

8]1.

024

1.01

11.

062

6800

[320

9]1.

012

1.00

71.

031

6400

[302

0]1.

000

1.00

01.

000

6000

[283

2].9

88

.997

.969

5600

[264

3].9

76

.992

.938

5200

[245

4]

CO

MPO

NEN

T A

IR R

ESIS

TAN

CE—

15 T

ON

[52.

8 kW

]CF

M[L

/s]

4800

[226

5]W

et C

oil

.02

Dow

nflo

w.0

1.0

2.0

4

5200

[245

4]

.03

.06

5600

[264

3]

.04

.08

6000

[283

2]

.05

.10

6400

[302

0]

.06

.12

6800

[320

9]

.07

.15

7200

[339

8]

Econ

omiz

er R

.A. D

ampe

r Ope

n.0

8.1

8.1

1.1

2.1

3.1

6.1

7Ho

rizon

tal E

cono

miz

er.0

1.1

3.0

1.0

5.1

0.1

2.1

9

NOTE

: Add

comp

onen

t res

istan

ce to

duct

resis

tance

to de

termi

ne to

tal ex

terna

l stat

ic pr

essu

re.

NOTE

S: 1.

Fac

tory s

heav

e sett

ings a

re sh

own i

n bold

type

.2.

Do no

t set

motor

shea

ve be

low m

inimu

m tur

ns op

en sh

own.

3.

Re-a

djustm

ent o

f she

ave r

equir

ed to

achie

ve ra

ted ai

rflow

at AR

I mini

mum

E.S.

P.

4. Dr

ive da

ta sh

own i

s for

horiz

ontal

airflo

w wi

th dr

y coil

. Add

comp

onen

t res

istan

ce to

duct

resis

tance

to de

termi

ne to

tal E

.S.P.


AIR

FLO

W C

OR

REC

TIO

N F

AC

TOR

S—15

TO

N [5

2.8

kW]

987

4444

1000

6200

[292

6]68

522

2470

423

6872

425

1274

326

5576

327

9978

229

4280

130

8682

132

2989

731

9091

033

6992

335

4893

637

2794

939

0796

240

8697

442

6564

00 [3

020]

701

2468

720

2611

740

2755

759

2899

779

3042

798

3186

817

3329

893

3316

906

3495

919

3675

932

3854

945

4033

958

4212

971

4391

4623

983

4570

6600

[311

5]71

727

1173

628

5575

629

9877

531

4279

532

8681

434

2988

934

4290

236

2291

538

0192

839

8094

141

5995

443

3896

745

1798

0

—

4696

7200

[339

8]

992

765

4876

3442

6800

[320

9]

784

733

3585

2955

804

752

3729

3098

877

772

3821

3242

890

791

4000

3385

903

811

4179

3529

916

885

3569

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

W48

00 [2

265]

——

——

——

631

951

650

1095

670

1238

689

1382

709

1525

728

1669

747

1812

767

1956

786

2100

806

2243

899

1949

912

2128

5000

[236

0]—

——

——

—64

711

9466

613

3868

614

8270

516

2572

517

6974

419

1276

420

5678

321

9980

223

4382

224

8790

822

5492

124

3352

00 [2

454]

——

——

644

1294

663

1438

682

1581

702

1725

721

1869

741

2012

760

2156

780

2299

799

2443

818

2586

904

2380

917

2559

929

2738

5400

[254

9]—

—64

013

9466

015

3867

916

8169

818

2571

819

6873

721

1275

722

5677

623

9979

625

4381

526

8690

025

0691

326

8592

628

6493

830

4456

00 [2

643]

637

1494

656

1638

676

1781

695

1925

714

2068

734

2212

753

2355

773

2499

792

2643

812

2786

896

2632

909

2812

922

2991

935

3170

947

3349

5800

[273

7]65

317

3867

218

8169

220

2571

121

6873

123

1275

024

5576

925

9978

927

4280

828

8689

227

5990

529

3891

831

1793

132

9694

434

7595

636

5460

00 [2

832]

669

1981

688

2125

708

2268

727

2412

747

2555

766

2699

785

2842

805

2986

888

2885

901

3064

914

3243

927

3422

940

3601

953

3780

965

3960

7000

[330

4]74

931

9876

833

4278

834

8580

736

2988

136

9589

438

7490

740

5392

042

3293

344

1194

645

9195

947

7097

249

49—

——

——

—89

837

4891

139

2792

441

0693

742

8595

044

6496

346

4397

648

2398

950

02—

—

4358

—10

1348

0299

647

4910

0949

28—

—10

0550

55—

——

—

929

4538

942

RPM

WRP

MW

RPM

W92

423

0793

724

8695

026

6593

326

1294

627

9195

929

7094

229

1795

530

9796

832

7695

132

2396

434

0297

735

8196

035

2897

337

0798

638

8696

938

3398

240

1299

541

9297

841

3999

143

1810

0444

97

——

——

——

——

——

——

Capa

city

15 T

on [5

2.8

kW]

4717

—

955

4896

968

5075

——

——

——

——

——

——

——

Air

Flow

CFM

[L/s

]

——

——

——

——

—

RPM

WRP

MW

963

2844

976

3023

972

3149

985

3329

981

3455

994

3634

990

3760

1003

3939

999

4065

1012

4245

1008

4371

1021

4550

1017

4676

——

——

——

——

——

——

——

0.1

[.02

]0.

2 [.

05]

0.3

[.07

]0.

4 [.

10]

0.5

[.12

]0.

6 [.

15]

0.7

[.17

]0.

8 [.

20]

0.9

[.22

]1.

0 [.

25]

1.1

[.27

]1.

2 [.

30]

1.3

[.32

]1.

4 [.

35]

1.5

[.37

]1.

6 [.

40]

1.7

[.42

]1.

8 [.

45]

1.9

[.47

]2.

0 [.

50]

Exte

rnal

Sta

tic P

ress

ure—

Inch

es o

f Wat

er [k

Pa]

McQuay Cat 251-1 49

AIR

FLO

W P

ERFO

RM

AN

CE—

20 T

ON

[70.

3 kW

]

1059

6887

1072

7800

[368

1]81

341

7283

343

1685

244

5987

146

0391

749

1693

050

9594

352

7495

654

5496

956

3398

258

1299

559

9110

0861

7010

2163

4910

3365

2810

4667

0780

00 [3

776]

829

4415

849

4559

868

4703

913

5042

926

5221

939

5401

952

5580

965

5759

978

5938

991

6117

1004

6296

1017

6475

1030

6655

1042

6834

7066

1055

7013

8200

[387

0]84

546

5986

548

0291

051

6992

253

4893

555

2794

857

0696

158

8597

460

6498

762

4310

0064

2210

1366

0210

2667

8110

3969

6010

5171

3910

6473

1884

00 [3

964]

861

4902

881

5046

919

5474

931

5653

944

5832

957

6011

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

WRP

MW

RPM

W64

00 [3

020]

701

2468

720

2611

740

2755

759

2899

779

3042

798

3186

817

3329

837

3473

856

3616

876

3760

932

3854

945

4033

958

4212

971

4391

983

4570

6600

[311

5]71

727

1173

628

5575

629

9877

531

4279

532

8681

434

2983

435

7385

337

1687

238

6092

839

8094

141

5995

443

3896

745

1798

046

9699

248

7668

00 [3

209]

733

2955

752

3098

772

3242

791

3385

811

3529

830

3673

850

3816

869

3960

924

4106

937

4285

950

4464

963

4643

976

4823

989

5002

1001

5181

7000

[330

4]74

931

9876

833

4278

834

8580

736

2982

737

7284

639

1686

640

6092

042

3293

344

1194

645

9195

947

7097

249

4998

551

2899

853

0710

1054

8672

00 [3

398]

765

3442

784

3585

804

3729

823

3872

843

4016

862

4160

882

4303

929

4538

942

4717

955

4896

968

5075

981

5254

994

5433

1007

5612

1019

5791

7400

[349

2]78

136

8580

138

2982

039

7283

941

1685

942

5987

844

0392

546

6493

848

4395

150

2296

452

0197

753

8099

055

5910

0357

3910

1559

1810

2860

9776

00 [3

587]

797

3929

817

4072

836

4216

855

4359

875

4503

921

4790

934

4969

947

5148

960

5327

973

5506

986

5686

999

5865

1012

6044

1024

6223

1037

6402

8600

[405

9]87

751

4691

556

0092

857

7994

059

5895

361

3796

663

1797

964

9699

266

7510

0568

5410

1870

3310

3172

1210

4473

91—

——

——

—97

061

9098

363

6999

665

4910

0967

2810

2269

0710

3570

8610

4872

65—

——

—

9000

[424

8]92

060

3293

362

1194

563

9095

865

6997

167

4898

469

2799

771

0610

1072

85—

——

——

——

——

——

——

—

1085

7245

1068

7192

1081

7371

——

——

——

——

RPM

WRP

MW

RPM

W99

647

4910

0949

2810

2251

0810

0550

5510

1852

3410

3154

1310

1453

6010

2755

3910

4057

1810

2356

6510

3658

4410

4960

2410

3259

7110

4561

5010

5863

2910

4162

7610

5464

5510

6766

3410

5065

8110

6367

6010

7669

40

——

——

——

——

——

——

——

——

——

Capa

city

20 T

on [7

0.3

kW]

8800

[415

3]91

157

2692

459

0593

660

8494

962

6496

264

4397

566

2298

868

0110

0169

8010

1471

5910

2773

38—

——

——

——

——

——

——

——

—

9200

[434

2]92

963

3794

265

1695

466

9596

768

7498

070

5399

372

3310

0674

12—

——

——

——

——

——

——

——

——

——

——

—

Air

Flow

CFM

[L/s

]

1098

7424

——

——

——

——

——

RPM

WRP

MW

1035

5287

1048

5466

1044

5592

1057

5771

1053

5897

1066

6076

1062

6203

1075

6382

1071

6508

1084

6687

1080

6813

1093

6992

1089

7119

1102

7298

——

——

——

——

——

——

——

——

——

——

0.1

[.02

]0.

2 [.

05]

0.3

[.07

]0.

4 [.

10]

0.5

[.12

]0.

6 [.

15]

0.7

[.17

]0.

8 [.

20]

0.9

[.22

]1.

0 [.

25]

1.1

[.27

]1.

2 [.

30]

1.3

[.32

]1.

4 [.

35]

1.5

[.37

]1.

6 [.

40]

1.7

[.42

]1.

8 [.

45]

1.9

[.47

]2.

0 [.

50]

Exte

rnal

Sta

tic P

ress

ure—

Inch

es o

f Wat

er [k

Pa]

9400

[443

6]93

866

4295

168

2196

370

0097

671

8098

973

59—

——

——

——

——

——

——

——

——

——

——

——

——

——

——

—96

00 [4

531]

94

769

4896

071

2797

273

0698

5—

——

——

——

——

——

——

——

——

——

——

——

——

——

——

——

——

Driv

e Pa

ckag

eL

MM

otor

H.P.

[W]

5.0

[372

8.5]

7.5

[559

2.7]

Blow

er S

heav

eBK

95BK

90M

otor

She

ave

1VP-

501V

P-60

Turn

s Op

en1

23

45

61

23

45

6RP

M88

284

681

077

373

670

011

0210

7510

4710

0696

492

2

NOTE

S: 1.

Fac

tory s

heav

e sett

ings a

re sh

own i

n bold

type

.2.

Do no

t set

motor

shea

ve be

low m

inimu

m tur

ns op

en sh

own.

3.

Re-a

djustm

ent o

f she

ave r

equir

ed to

achie

ve ra

ted ai

rflow

at AR

I mini

mum

E.S.

P.

4. Dr

ive da

ta sh

own i

s for

horiz

ontal

airflo

w wi

th dr

y coil

. Add

comp

onen

t res

istan

ce to

duct

resis

tance

to de

termi

ne to

tal E

.S.P.

NOTE

: L-D

rive l

eft of

bold

line,

M-Dr

ive rig

ht of

bold

line.

AIR

FLO

W C

OR

REC

TIO

N F

AC

TOR

S—20

TO

N [7

0.3

kW]C

OM

PON

ENT

AIR

RES

ISTA

NC

E—20

TO

N [7

0.3

kW]

CFM

[L/s

]64

00[3

020]

Wet

Coi

l.1

0Do

wnf

low

.03

.10

.25

8800

[415

3]

.04

.12

6800

[320

9]

.05

.15

7200

[339

8]

.06

.17

7600

[358

7]

.08

.20

8000

[377

6]

.09

.22

8400

[396

4]

.11

.27

9200

[434

2]

.13

.30

9600

[453

1 ]

Econ

omiz

er R

.A. D

ampe

r Ope

n.1

6.2

4.1

7.2

7.2

8.1

8.2

3.2

1.2

3Ho

rizon

tal E

cono

miz

er.1

2.4

0.1

9—

—.1

3.1

8.2

5.3

0

NOTE

: Add

comp

onen

t res

istan

ce to

duct

resis

tance

to de

termi

ne to

tal ex

terna

l stat

ic pr

essu

re.

.966

.975

TOTA

L M

BTUH

1.02

5

.991

.961

.937

6400

[302

0].9

85.9

95

.999

.987

.987

7200

[339

8]

POW

ER k

W1.

012

.995

.984

.962

6800

[320

9]1.

005

1.00

41.

012

7600

[358

7]

1.06

3

8400

[396

4]

.912

1.03

4

1.01

6SE

NSIB

LE M

BTUH

1.08

8

8800

[415

3]1.

015

1.00

81.

038

.899

8000

[377

6]1.

000

1.00

01.

000

7400

[349

2].9

90

.997

.975

7000

[330

4].9

80

6000

[283

2]

.993

.949

6600

[311

5].9

70

.989

ACTU

AL—

CFM

[L/s

]

.924

6200

[292

6]58

00[2

737]

1.03

9

1.01

91.

101

9000

[424

8]1.

030

1.01

41.

075

8600

[405

9]1.

020

1.01

01.

050

8200

[387

0]1.

010

1.00

61.

025

7800

[368

1]

[ ]

Des

igna

tes

Met

ric C

onve

rsio

ns


50 McQuay Cat 251-1

Electrical Data

ELECTRICAL DATA

Minimum Circuit Ampacity 18/18

Unit

Info

rmat

ion

Unit OperatingVoltage Range 187-253

Minimum OvercurrentProtection Device Size 20/20

Maximum OvercurrentProtection Device Size 25/25

Com

pres

sor M

otor

No. 1Volts 200/230Phase 3

HP 3RPM 3450

Amps (RLA) 9.6/9.6Amps (LRA) 88/88

Cond

ense

r Mot

or


HP 1/3Amps (FLA) 1.5Amps (LRA) 3

Evap

orat

or F

an


HP 1/2Amps (FLA) 4Amps (LRA) 6.7 6.7

41/21

208/23013

1.51/31

208/2301

88/889.6/9.63450

33

200/2301

25/25

20/20

18/18

187-253

3.62

1/21

4601

1.91

1/31

4601385.8

345033

4601

15

15

11

414-506

3.62

1/21

4601

1.91

1/31

4601385.8

345033

4601

15

15

11

414-506

6.74

1/21

208/23013

1.51/31

208/2301

80.8/80.812.2/12.2

345043

200/2301

30/30

25/25

21/21

187-253

6.74

1/21

208/23013

1.51/31

208/2301

80.8/80.812.2/12.2

345043

200/2301

30/30

25/25

21/21

187-253

3.62

1/21

4601

1.91

1/31

4601

416.1

345043

4601

15

15

11

414-506

3.62

1/21

4601

1.91

1/31

4601416.1

345043

4601

15

15

11

414-506

Model MPS- 003AGCK08E 003AGCK12E 003AGDK08E 003AGDK12E 004AGCK10E 004AGCK13E 004AGDK10E 004AGDK13E

1. Horsepower Per Compressor.2. Amp Draw Per Motor. Multiply Value By Number of Motors to Determine Total Amps.

McQuay Cat 251-1 51

Electrical Data

ELECTRICAL DATA

Minimum Circuit Ampacity

Minimum OvercurrentProtection Device SizeMaximum OvercurrentProtection Device Size

Com

pres

sor M

otor

No.VoltsPhase

HPRPM

Amps (RLA)Amps (LRA)

Unit

Info

rmat

ion

Unit OperatingVoltage Range

Cond

ense

r Mot

or

No.VoltsPhase

HPAmps (FLA)Amps (LRA)

Evap

orat

or F

an

No.VoltsPhase

HPAmps (FLA)Amps (LRA) 24

3.813

208/2301

4.92.21/31

208/2301

110/11015.4/15.4

345053

200/2301

40/40

30/30

26/26

187-253

243.813

208/2301

4.92.21/31

208/2301

110/11015.4/15.4

345053

200/2301

40/40

30/30

26/26

187-253

121.913

4601

1.91

1/31

4601527.1

345053

4601

15

15

12

414-506

121.913

4601

1.91

1/31

4601

527.1

345053

4601

15

15

12

414-506

Model MPS- 005AGCM10E 005AGCM13E 005AGDM10E 005AGDM13E


52 McQuay Cat 251-1

Electrical Data

ELECTRICAL DATA


Minimum OvercurrentProtection Device Size

34/34

40/40


Com

pres

sor M

otor


HP 3RPM 3450

Amps (RLA) 11.4/11.4Amps (LRA)

Unit

Info

rmat

ion


77/77

187-253

Cond

ense

r Mot

or


HP 1/3Amps (FLA) 2.6Amps (LRA) 4.7

Evap

orat

or F

an


HP 1 1/2Amps (FLA) 5.8Amps (LRA) 28.8 28.8

5.81 1/2

3208/230

14.72.61/31

208/2301

77/7711.4/11.4

345033

200/2302

40/40

40/40

34/34

187-253

28.85.8

1 1/23

208/2301

4.72.61/31

208/2301

77/7711.4/11.4

345033

200/2302

40/40

40/40

34/34

187-253

28.85.8

1 1/23

208/2301

4.72.61/31

208/2301

77/7711.4/11.4

345033

200/2302

40/40

40/40

34/34

187-253

14.42.8

1 1/23

4601

2.41

1/31

4601

395.9

345033

4602

20

20

18

414-506

14.42.8

1 1/23

4601

2.41

1/31

4601395.9

345033

4602

20

20

18

414-506

14.42.8

1 1/23

4601

2.41

1/31

4601

395.9

345033

4602

20

20

18

414-506

14.42.8

1 1/23

4601

2.41

1/31

4601

395.9

345033

4602

20

20

18

414-506

Model MPS- 006AGCL10E 006AGCL13E 006AGCM10E 006AGCM13E 006AGDL10E 006AGDL13E 006AGDM10E 006AGDM13E


McQuay Cat 251-1 53

Electrical Data

ELECTRICAL DATA



14

15

Maximum OvercurrentProtection Device Size 15

Com

pres

sor M

otor

No. 2Volts 575Phase 3

HP 3RPM 3450

Amps (RLA) 4.7Amps (LRA)

Unit

Info

rmat

ion


31

518-632

Cond

ense

r Mot

or


HP 1/3Amps (FLA) 0.9Amps (LRA) 1.5

Evap

orat

or F

an


HP 1 1/2Amps (FLA) 2.3Amps (LRA) 13 13

2.31 1/2

3575

11.50.91/31

5751

314.7

345033

5752

15

15

14

518-632

Model MPS- 006AGYL13E 006AGYM13E


54 McQuay Cat 251-1

Electrical Data

ELECTRICAL DATA

Minimum Circuit Ampacity 44/44

Unit

Info

rmat

ion


Minimum OvercurrentProtection Device Size 50/50


Com

pres

sor M

otor


HP 3 1/2RPM 3450

Amps (RLA) 13/13Amps (LRA) 88/88

Cond

ense

r Mot

or


HP 1/3Amps (FLA) 3Amps (LRA) 4.7

Evap

orat

or F

an


HP 2Amps (FLA) 8Amps (LRA) 56 56

823

208/2301

4.73

1/31

208/2302

88/8813/1334503 1/2

3200/230

2

50/50

50/50

44/44

187-253

74.51333

208/2301

4.73

1/31

208/2302

88/8813/1334503 1/2

3200/230

2

60/60

60/60

49/49

187-253

74.51333

208/2301

4.73

1/31

208/2302

88/8813/1334503 1/2

3200/230

2

60/60

60/60

49/49

187-253

28423

4601

2.42

1/31

4602447

34503 1/2

3480

2

30

30

24

414-506

28423

4601

2.42

1/31

4602

447

34503 1/2

34802

30

30

24

414-506

38.1733

4601

2.42

1/31

4602447

34503 1/2

34802

30

30

27

414-506

38.1733

4601

2.42

1/31

4602447

34503 1/2

34802

30

30

27

414-506



McQuay Cat 251-1 55

Electrical Data

ELECTRICAL DATA



18

20


Com

pres

sor M

otor


HP 3 1/2RPM 3450

Amps (RLA) 5Amps (LRA)

Unit

Info

rmat

ion


34

518-632

Cond

ense

r Mot

or



Evap

orat

or F

an



823

5751

1.51

1/31

5752

345

34503 1/2

3600

2

30

25

22

518-632

56823

208/2301

4.73

1/31

208/2302

91/9113.3/13.3

345043

200/2302

50/50

50/50

44/44

187-253

56823

208/2301

4.73

1/31

208/2302

91/9113.3/13.3

345043

200/2302

50/50

50/50

44/44

187-253

74.51333

208/2301

4.73

1/31

208/2302

91/9113.3/13.3

345043

200/2302

60/60

60/60

49/49

187-253

74.51333

208/2301

4.73

1/31

208/2302

91/9113.3/13.3

345043

200/2302

60/60

60/60

49/49

187-253

28423

4601

2.42

1/31

4602

507.1

345043

4602

30

30

24

414-506

28423

4601

2.42

1/31

4602

507.1

345043

4602

30

30

24

414-506

Model MPS- 007AGYL22E 007AGYM22E 008AGCL15E 008AGCL22E 008AGCM15E 008AGCM22E 008AGDL15E 008AGDL22E


56 McQuay Cat 251-1

Electrical Data

ELECTRICAL DATA



27

30


Com

pres

sor M

otor


HP 4RPM 3450

Amps (RLA) 7.1Amps (LRA)

Unit

Info

rmat

ion


50

414-506

Cond

ense

r Mot

or



Evap

orat

or F

an


HP 3Amps (FLA) 7Amps (LRA) 38.1 38.1

733

4601

2.42

1/31

4602507.1

345043

4602

30

30

27

414-506

19423

5751

1.51

1/31

5752375.5

345043

5752

20

20

19

518-632

20833

5751

1.51

1/31

5752

375.5

345043

5752

30

25

23

518-632

56823

208/2301

4.73

1/31

208/2302

124/12417/173450

53

200/2402

60/60

60/60

53/53

187-253

56823

208/2301

4.73

1/31

208/2302

124/12417/173450

53

200/2302

60/60

60/60

53/53

187-253

74.51333

208/2301

4.73

1/31

208/2302

124/12417/173450

53

200/2302

70/70

70/70

58/58

187-253

74.51333

208/2301

4.73

1/31

208/2302

124/12417/173450

53

200/2302

70/70

70/70

58/58

187-253

Model MPS- 008AGDM15E 008AGDM22E 008AGYL22E 008AGYM22E 010AGCL15E 010AGCL22E 010AGCM15E 010AGCM22E


McQuay Cat 251-1 57

Electrical Data

ELECTRICAL DATA



29

35


Com

pres

sor M

otor


HP 5RPM 3450


Unit

Info

rmat

ion


59.6

414-506

Cond

ense

r Mot

or



Evap

orat

or F

an



423

4601

2.42

1/31

4602

59.69

345053

4802

35

35

29

414-506

38.1733

4601

2.42

1/31

4602

59.69

345053

4802

40

35

32

414-506

38.1733

4601

2.42

1/31

4602

59.69

345053

4802

40

35

32

414-506

19423

5751

1.51

1/31

5752

49.47

345053

6002

25

25

22

518-632

20833

5751

1.51

1/31

5752

49.47

345053

6002

30

30

26

518-632

74.51533

208/2301

4.73

1/31

208/2302

156/15621.9/21.9

345063

200/2302

90/90

80/80

71/71

187-253

74.51533

208/2301

4.73

1/31

208/2302

156/15621.9/21.9

345063

200/2302

90/90

80/80

71/71

187-253

Model MPS- 010AGDL15E 010AGDL22E 010AGDM15E 010AGDM22E 010AGYL22E 010AGYM22E 012AGCL15E 012AGCL25E


58 McQuay Cat 251-1

Electrical Data

ELECTRICAL DATA



71/71

80/80


Com

pres

sor M

otor


HP 6RPM 3450


Unit

Info

rmat

ion


156/156

187-253

Cond

ense

r Mot

or



Evap

orat

or F

an


HP 5Amps (FLA) 15Amps (LRA) 82.6 82.6

1553

208/2301

4.73

1/31

208/2302

156/15621.9/21.9

345063

200/2302

90/90

80/80

71/71

187-253

38.1733

4601

2.42

1/31

460275

10.93450

63

4802

45

40

36

414-506

38.1733

4601

2.42

1/31

4602

7510.93450

63

4802

45

40

36

414-506

41.31053

4601

2.42

1/31

460275

10.93450

63

4802

45

45

39

414-506

41.31053

4601

2.42

1/31

4602

7510.93450

63

4802

45

45

39

414-506

20833

5751

1.51

1/31

5752548.9

345063

6002

35

35

31

518-632

33853

5751

1.51

1/31

5752

548.9

345063

6002

35

35

31

518-632

Model MPS- 012AGCM15E 012AGCM25E 012AGDL15E 012AGDL25E 012AGDM15E 012AGDM25E 012AGYL25E 012AGYM25E


McQuay Cat 251-1 59

Electrical Data

ELECTRICAL DATA



74/74

80/80


Com

pres

sor M

otor


HP 3 1/2RPM 3450


Unit

Info

rmat

ion


88/88

187-253

Cond

ense

r Mot

or



Evap

orat

or F

an


HP 3Amps (FLA) 11.5Amps (LRA) 74.5 74.5

11.533

208/2301

4.73

1/31

208/2304

88/8812.4/12.4

34503 1/2

3200/230

4

80/80

80/80

74/74

187-253

82.614.7

53

208/2301

4.73

1/31

208/2304

88/8812.4/12.4

34503 1/2

3200/230

4

90/90

90/90

78/78

187-253

82.614.7

53

208/2301

4.73

1/31

208/2304

88/8812.4/12.4

34503 1/2

3200/230

4

80/80

80/80

77/77

187-253

38.1733

4601

2.42

1/31

4604

446.4

34503 1/2

34604

45

45

43

414-506

38.1733

4601

2.42

1/31

4604446.4

34503 1/2

34604

45

45

43

414-506

41.31053

4601

2.42

1/31

4604

446.4

34503 1/2

3460

4

50

50

47

414-506

41.31053

4601

2.42

1/31

4604

446.4

34503 1/2

3460

4

50

50

47

414-506



60 McQuay Cat 251-1

Electrical Data

ELECTRICAL DATA



34

40


Com

pres

sor M

otor


HP 3 1/2RPM 3450


Unit

Info

rmat

ion


34

518-632

Cond

ense

r Mot

or



Evap

orat

or F

an



853

5751

1.51

1/31

5754

345

34503 1/2

3575

4

40

40

34

518-632

82.614.7

53

208/2301

4.73

1/31

208/2304

123/12317.5/17.5

34504 3/4

3200/230

4

110/110

110/110

99/99

187-253

82.614.7

53

208/2301

4.73

1/31

208/2304

123/12317.5/17.5

34504 3/4

3200/230

4

110/110

110/110

99/99

187-253

13622.37.53

208/2301

4.73

1/31

208/2304

123/12317.5/17.5

34504 3/4

3200/230

4

110/110

110/110

107/107

187-253

13622.37.53

208/2301

4.73

1/31

208/2304

123/12317.5/17.5

34504 3/4

3200/230

4

110/110

110/110

107/107

187-253

41.31053

4601

2.42

1/31

4604

629

34504 3/4

3460

4

60

60

57

414-506

41.31053

4601

2.42

1/31

4604629

34504 3/4

3460

4

60

60

57

414-506

Model MPS- 015AGYL35E 015AGYM35E 020AGCL30E 020AGCL40E 020GCM30E 020GCM40E A020AGDL30E A020AGDL40E


McQuay Cat 251-1 61

Electrical Data

ELECTRICAL DATA

Minimum Circuit Ampacity 58

Unit

Info

rmat

ion


Minimum OvercurrentProtection Device Size 60


Com

pres

sor M

otor


HP 4 3/4RPM 3450

Amps (RLA) 9Amps (LRA) 62

Cond

ense

r Mot

or



Evap

orat

or F

an


HP 7.5Amps (FLA) 11.2Amps (LRA) 68 68

11.27.53

4601

2.42

1/31

4604629

34504 3/4

34604

60

60

58

414-506

33853

5751

1.51

1/31

5754507.1

34504 3/4

35754

50

45

43

518-632

53.88.87.53

5751

1.51

1/31

5754

507.1

34504 3/4

3575

4

50

50

44

518-632

Model MPS- 020AGDM30E 020AGDM40E 020AGYL40E 020AGYM40E


Unit Dimensions—MPS-003A, 004A, 005A

62 McQuay Cat 251-1

GAS / ELECTRIC 3 TO 5 TON [10.6 TO 17.6 kW] MODELS

BOTTOM VIEW


McQuay Cat 251-1 63


GAS / ELECTRIC


3 TO 5 TON [10.6 TO 17.6 kW] MODELS

64 McQuay Cat 251-1

Accessory3-5 Ton [10.6-17.6 kW]

Economizer with Single Enthalapy 70 [32]Power Exhaust 19 [9]Fresh Air Damper (Manual) 11 [5] 9 [4]

16 [7]60 [27]

Fresh Air Damper (Motorized) 13 [6] 11 [5]

lbs [kg] lbs [kg]Shipping Operating

A B C D22% 27% 23% 28%

Capacity Tons [kW]

3-5 [10.6-17.6]

Corner Weights by Percentage

381/4 [972] 253/4 [654]3-5 [10.6-17.6]Capacity Tons [kW] A in. [mm] B in. [mm]

WEIGHTSCENTER OF GRAVITY (C.G.)

CLEARANCES(3 to 5 Ton [10.6 to 17.6 kW] Models)The following minimum clearances are recommendedfor proper unit performance and serviceability.

RecommendedClearance in. [mm] Location

48 [1219] A - Front18 [457] B - Condenser Coil12 [305] C - Duct Side36 [914] D - Evaporator End60 [1524] E - Above

*Without Economizer. 57" [1448 mm] With Economizer

NOTE: Supply duct may be installed with “0” inch clearance to combustible materials, provided 1" [25.4 mm] minimum Fiberglass insulation is applied either inside or on the outside of the duct.



McQuay Cat 251-1 65

Unit Dimensions—MPS-006A


GAS / ELECTRIC 6 TON [21.1 kW] MODELS

BOTTOM VIEW

SUPPLY AND RETURN DIMENSIONS (BACK VIEW)

66 McQuay Cat 251-1


GAS / ELECTRIC 6 TON [21.1 kW] MODELS


FRONT VIEW – UNIT ACCESS

McQuay Cat 251-1 67

Accessory6 Ton [21.1 kW]

Economizer with Single Enthalapy 70 [32]Power Exhaust 19 [9]Fresh Air Damper (Manual) 11 [5] 9 [4]

16 [7]60 [27]

Fresh Air Damper (Motorized) 13 [6]Roof Curb 14" 92 [42] 88 [40]

11 [5]

lbs [kg] lbs [kg]Shipping Operating

WEIGHTS

A B C D22% 27% 23% 28%

Capacity Tons [kW]

6 [21.1]


381/4 [972] 253/4 [654]6 [21.1]Capacity Tons [kW] A in. [mm] B in. [mm]

CENTER OF GRAVITY (C.G.)

CLEARANCES(6 Ton [21.1 kW] Models)The following minimum clearances are recommendedfor proper unit performance and serviceability.

RecommendedClearance in. [mm] Location

48 [1219] A - Front18 [457] B - Condenser Coil12 [305] C - Duct Side36 [914] D - Evaporator End60 [1524] E - Above


NOTE: Supply duct may be installed with “0” inch clearance to combustible materials, provided 1" [25.4 mm] minimum Fiberglass insulation is applied either inside or on the outside of the duct.



68 McQuay Cat 251-1

Unit Dimensions—MPS-007A thru MPS-012A


BOTTOM VIEW

GAS / ELECTRIC

IllustrationST-A0715-03-X1

IllustrationST-A0734-02

7 TO 12 TON [26.4 - 44.0 kW] MODELS

McQuay Cat 251-1 69


BOTTOM VIEW – SUPPLY AND RETURN DIMENSIONS FOR DOWNFLOW APPLICATIONS

*RECOMMENDED DUCT DIMENSIONS ARE 26"

GAS / ELECTRIC




BACK VIEW – SUPPLY AND RETURN DIMENSIONS FOR HORIZONTAL APPLICATIONS

7 TO 12 TON [26.4 - 44.0 kW] MODELS

70 McQuay Cat 251-1


GAS / ELECTRIC



7 TO 12 TON [26.4 - 44.0 kW] MODELS

McQuay Cat 251-1 71



WEIGHTSAccessory Shipping—lbs [kg]Economizer 90 [40.82]Power Exhaust 44 [19.96] 42 [19.05]

81 [36.70]Operating—lbs [kg]

Fresh Air Damper (Motorized) 43 [19.50]Roof Curb 14" 90 [40.82] 85 [38.60]

38 [17.24] A B C D33% 27% 17% 23%

Capacity Tons [kW]

7.5-12.5 [26.4-44.0]


A074102

CLEARANCESThe following minimum clearances mustbe observed for proper unit performanceand serviceability.

RecommendedClearance In. [mm] Location

48 [1219] A - Front18 [457] B - Condenser Coil18 [457] C - Duct Side18 [457] *D - Evaporator End60 [1524] E - Above




A074403

72 McQuay Cat 251-1

GAS / ELECTRIC




Unit Dimensions—MPS-015A/MPS-020A

15 TO 20 TON [52.8 - 70.3 kW] MODELS

McQuay Cat 251-1 73

38.13[968.4 mm]

2.06[52.4 mm]

4.44[112.7 mm]

5.75 [146.1 mm]

21 [533.4 mm]

20 [508 mm]

58.81[1493.8 mm]

146.13[3711.6 mm]

35.88[911.2 mm]

12.63[320.7 mm]

6.56[166.7 mm]

2.13[54 mm]

18.25[463.6 mm]

8.88[225.4 mm]

40[1016 mm]

23[584.2 mm]

4.19[106.4 mm]

54[1371.6 mm]

THRU THE BASE GAS

THRU THE BASE ELECTRIC

3[76.2 mm]

TYP.

SUPPLY AIR RETURN

AIR

141.31[3589.3 mm]

2.38[60.3 mm]

TYP.

ST-A0886-07-01

BOTTOM VIEW – SUPPLY AND RETURN DIMENSIONS FOR DOWNFLOW APPLICATIONS

BACK VIEW – SUPPLY AND RETURN DIMENSIONS FOR HORIZONTAL APPLICATIONS

GAS / ELECTRIC



IllustrationST-A0886-07-01

DUCT SIDE VIEW

BOTTOM VIEW


15 TO 20 TON [52.8 - 70.3 kW] MODELS

74 McQuay Cat 251-1



A B C D30% 26% 20% 24%

Capacity Tons [kW]

15 & 20 [52.8-70.3]


WEIGHTSAccessory Shipping—lbs [kg]Economizer—Downflow 155 [70.31]

Fresh Air Damper (Manual) 51 [23.13] 40 [18.14]

146 [66.22]Operating—lbs [kg]

Fresh Air Damper (Motorized) 46 [20.87]Roof Curb 14" 170 [77.11] 164 [74.39]

35 [15.88]

Economizer—Horizontal 165 [74.80] 155 [70.31]


GAS / ELECTRIC


15 TO 20 TON [52.8 - 70.3 kW] MODELS

McQuay Cat 251-1 75


CLEARANCESThe following minimum clearances are recommended for proper unit performanceand serviceability.



RecommendedClearance In. [mm] Location

48 [1219] A - Front18 [457] B - Condenser Coil18 [457] C - Duct Side

*18 [457] D - Evaporator End60 [1524] E - Above


SLAB INSTALLATION


76 McQuay Cat 251-1

Accessories

ECONOMIZERS

FRESH AIR DAMPERS & POWER EXHAUSTMcQuay

Model No. Description

MXRF-FBA1 Manual fresh air damper for MPS-003A through -005A series

MXRF-FCA1 Manual fresh air damper for MPS-006A series

MXRF-FCB1 Motorized fresh air damper for MPS-006A seriesMXRF-FDB1 Motorized fresh air damper for MPS-007A through -012A (back side)MXRF-FDA1 Manual fresh air damper for MPS-007A through -012A (back side)MXRF-HEA1 Manual fresh air damper for MPS-015A, -020A (left end)RXRX-AT01 Motorized Kit for MXRF-HEA1MXRX-BGF04C Power exhaust for 208/230 volt MPS-003A through -005A MXRX-BGF04D Power exhaust for 460 volt MPS-003A through -005A MXRX-BGF04Y Power exhaust for 575 volt MPS-003A through -005A MXRX-BGF03C Power exhaust for MPS-006A 208/230 voltMXRX-BGF03D Power exhaust for MPS-006A 460 voltMXRX-BGF03Y Power exhaust for MPS-006A 575 voltRXRX-BFF02C Power exhaust, 208/230 volt for MPS-007A through -020A RXRX-BFF02D Power exhaust, 460 volt for MPS-007A through -020A RXRX-BFF02Y Power exhaust, 575 volt for MPS-007A through -020A

MXRF-FBB1 Motorized fresh air damper for MPS-003A through -005A series

ROOFCURBSMcQuay

Model No. Description

RXKG-CAF14 MPS-015A through -020ARXKG-CAE14 MPS-007A through -012ARXKG-CAD14 MPS-003A through -006A

McQuayModel No. This single enthalpy economizer fits:

RXRX-AR02 N/ACO2 SensorRXRX-AV02 N/ADual Enthalpy Upgrade KitMXRD-NFCM3 HorizontalMPS-015A, -020AMXRD-MFCM3 VerticalMPS-015A, -020AMXRD-NDCM3

Airflow Direction

HorizontalMPS-007A through -012A

ConvertibleMXRD-MCCM3 MPS-006AMXRD-MDCM3

Convertible

Vertical

MXRD-MECM3 MPS-003A through -005A

MPS-007A through -012A

McQuayModel No. Description

RXGJ-EP85H MPS-003A through -006ARXGJ-EP84W MPS-003A through -006A

RXGJ-EP86W MPS-007A through -020ARXGJ-EP87W MPS-007A through -020ARXGJ-FP14 MPS-007A through -020A

LP CONVERSION KITS

McQuay Cat 251-1 77

Accessories


� Features economizer controller� Available factory installed or field accessory� Gear Driven Direct Drive Actuator� Fully Modulating (0-100%)� Low Leakage Dampers� Horizontal or Downflow Applications� Slip-In Design for Easy Installations� Plug-In Polarized Electrical Connections� Pre-configured—No Field Adjustments Necessary� Standard Barometric Relief Damper Provided� Single Enthalpy with Dual Enthalpy Upgrade Kit� CO2 Input Sensor Available (Field Installed)� Economizer slips in complete for Downflow or

Horizontal Duct application� Field Assembled Hood Ships with Economizer� Field Installed Power Exhaust Available

ECONOMIZERS: 3-6 TONS [10.6-21.1 kW]MXRD-MECM3—3-5 Ton [10.6-17.6 kW] Models Single Enthalpy with Barometric Relief

MXRD-MCCM3—6 Ton [21.1 kW] Models

RXRX-AV02— Dual Enthalpy Kit3-5 Ton [10.6-17.6 kW] Models

RXRX-AR02—3-5 Ton [10.6-17.6 kW] Models Optional CO2 Sensor

3-5 TON [10.6-17.6 kW] MODELS

6 TON [21.1 kW] MODELS

78 McQuay Cat 251-1

Accessories

� Features economizer controller� Available Factory Installed or Field Accessory� Gear Driven Direct Drive Actuator� Fully Modulating (0-100%)� Low Leakage Dampers� Slip-In Design for Easy Installation� Plug-In Polarized Electrical Connections� Pre-Configured—No Field Adjustments Necessary� Standard Barometric Relief Damper� Single Enthalpy with Dual Enthalpy Upgrade

Kit Available� CO2 Input Sensor Available� Field Assembled Hood Ships with Economizer� Economizer Ships Complete for Downflow Duct

Application� Field Installed Power Exhaust Available� Optional Remote Minimum Position (Honeywell

#S963B112B) is available


IllustrationADS-7949-11

ECONOMIZERS: 7.5-12.5 TONS [26.4-44 kW]Use to Select Factory Installed Options OnlyMXRD-MDCM3—7.5-12.5 Ton [26.4-44 kW] Models Single Enthalpy (Outdoor)RXRX-AV02—Dual Enthalpy Upgrade KitRXRX-AR02—Optional Wall-Mounted CO2 Sensor

McQuay Cat 251-1 79

Accessories

� Features economizer controller� Available as a Field Installed Accessory Only� Gear Driven Direct Drive Actuator� Fully Modulating (0-100%)� Low Leakage Dampers� Slip-In Design for Easy Installation� Plug-In Polarized Electrical Connections� Pre-Configured—No Field Adjustments Necessary� Standard Barometric Relief Damper� Single Enthalpy with Dual Enthalpy Upgrade

Kit Available� CO2 Input Sensor Available� Field Assembled Hood Ships

with Economizer� Economizer Ships Complete for

Horizontal Duct Application� Field Installed Power Exhaust Available� Optional Remote Minimum Position (Honeywell

#S963B112B) is Available


ECONOMIZER FOR HORIZONTAL DUCT INSTALLATION: 7.5-12.5 TONS [26.4-44 kW]Field Installed OnlyMXRD-NDCM3—7.5-12.5 Ton [26.4-44 kW] Models Single Enthalpy (Outdoor)RXRX-AV02—Dual Enthalpy Upgrade KitRXRX-AR02—Wall-mounted CO2 Sensor

80 McQuay Cat 251-1

Accessories

� Features economizer controller� Available Factory Installed or Field Accessory� Gear Driven Direct Drive Actuator� Fully Modulating (0-100%)� Low Leakage Dampers� Slip-In Design for Easy Installation� Plug-In Polarized Electrical Connections� Pre-Configured—No Field Adjustments Necessary� Standard Barometric Relief Damper� Single Enthalpy with Dual Enthalpy Upgrade

Kit Available� CO2 Input Sensor Available� Field Assembled Hood Ships with Economizer� Economizer Ships Complete for Downflow Duct

Application� Field Installed Power Exhaust Available



ECONOMIZERS: 15 TO 20 TONS [52.8 TO 70.3 kW]Use to Select Factory Installed Options OnlyMXRD-MFCM3—15 & 20 Ton [52.8 kW & 70.3 kW] Models Single Enthalpy (Outdoor)RXRX-AV02—Dual Enthalpy Upgrade KitRXRX-AR02—Optional Wall-Mounted CO2 Sensor

McQuay Cat 251-1 81

Accessories

� Features economizer controller� Available as a Field Installed Accessory Only� Gear Driven Direct Drive Actuator� Fully Modulating (0-100%)� Low Leakage Dampers� Slip-In Design for Easy Installation� Plug-In Polarized 12-pin Electrical Connections� Pre-Configured—No Field Adjustments Necessary� Standard Barometric Relief Damper� Single Enthalpy with Dual Enthalpy Upgrade

Kit Available� CO2 Input Sensor Available� Field Assembled Hood Ships

with Economizer� Economizer Ships Complete for

Horizontal Duct Application� Field Installed Power Exhaust Available



ECONOMIZER FOR HORIZONTAL DUCT INSTALLATION:15 TO 20 TONS [52.8 TO 70.3 kW]Field Installed OnlyMXRD-NFCM3—15 to 20 Ton [52.8 to 70.3 kW] Models Single Enthalpy (Outdoor)RXRX-AV02—Dual Enthalpy Upgrade KitRXRX-AR02—Wall-mounted CO2 Sensor

82 McQuay Cat 251-1

Accessories

INTEGRAL POWER EXHAUST FOR ECONOMIZER: 3-6 TONS [10.6-21.1 kW](FIELD INSTALLED ONLY)MXRX-BGF04 (C, D, Y Voltages) for MPS-003A through -005AMXRX-BGF03 (C, D, Y Voltages) for MPS-006A� For economizer controller� Downflow or horizontal applications� Requires separate power supply with disconnect� Adjustable switch on economizer, factory preset to

energize power exhaust at 95% outside air position� Polarized plug connects power exhaust relay

to economizer

Model No. No. of Fans Volts Phase Watts (ea.)High Speed

MXRX-BGF03C

FLA (ea.) LRA (ea.)

1 208-230 1 1000 2500 [1179] 1725 4.4 23.7MXRX-BGF03D 1 460 1 800 2370 [1118] 1620 1.8 4.1MXRX-BGF03Y➁ 1 575 1 800 2370 [1118] 1620 1.5 3.3MXRX-BGF04C 1 208-230 1 1000 2500 [1179] 1725 4.4 23.7MXRX-BGF04D 1 460 1 800 2370 [1118] 1620 1.8 4.1MXRX-BGF04Y➁ 1 575 1 800 2370 [1118] 1620 1.5 3.3

CFM [L/s] ➀ RPM

� CFM is at 0" W.C. external static pressure. [ ] Designates Metric Conversions� Unit includes 575 to 460 Volt step-down transformer.

POWER EXHAUST KIT FOR MXRD-MECM(-) ECONOMIZERSPOWER EXHAUST KIT FOR MXRD-MCCM(-), MXRD-MECM(-) ECONOMIZERS

McQuay Cat 251-1 83

Accessories

POWER EXHAUST KIT FOR ECONOMIZERS: 7.5-20 TONS [26.4-70.3 kW]VERTICAL AIRFLOW

IllustrationSTA1000-02

HORIZONTAL AIRFLOW

IllustrationSTA1000-01

Model No. No.of Fans Volts Phase HP

(ea.)Low Speed

RXRX-BFF02C 2 208-230 1 0.33 2200 [1038] 1518 2500 [1179]RXRX-BFF02D 2 460 1 0.33

High Speed ➀

16702200 [1038] 1518 2500 [1179] 1670 0.75

1.481.8

RXRX-BFF02Y 2 575 1

FLA(ea.)

3.6

0.33 2200 [1038] 1518 2500 [1179] 1670

LRA(ea.)

0.81 1.5

CFM [L/s] ➁ RPM CFM [L/s] ➁ RPM

NOTES: � Power exhaust is factory set on high speed motor tap. [ ] Designates Metric Conversions � CFM is per fan at 0" w.c. external static pressure.

84 McQuay Cat 251-1

Accessories


FRESH AIR DAMPER KIT FOR 3-6 TON [10.6-21.1 kW] UNITSMXRF-FBA1 (Manual)MXRF-FBB1 (Motorized)

6 Ton [21.1 kW] ModelsMXRF-FCA1 (Manual)MXRF-FCB1 (Motorized)

McQuay Cat 251-1 85

Accessories

FRESH AIR DAMPER KIT FOR 7.5-12.5 TON [26.4 to 44 kW] UNITS (Cont.)MXRF-FDA1 (Manual)MXRF-FDB1 (Motorized)

IllustrationADS-7937-58


HORIZONTAL APPLICATION

DOWNFLOW APPLICATION


86 McQuay Cat 251-1

Accessories

IllustrationST-7951-17


OUTDOOR AIR HOODMXRF-HEA1 (Manual)RXRX-ATO1 ( Motorized damper kit for

manual fresh air damper)Illustration

ST-A0889-02

FRESH AIR DAMPER KIT FOR 15-20 TON [52.8-70.3 kW] UNITSMOTORIZED DAMPER KITRXRX-ATO1(Motor Kit for MXRF-HEA1)

McQuay Cat 251-1 87

Accessories


ROOFCURB INSTALLATION

ROOFCURBS (Full Perimeter):3-6 TONS [10.6-21.1 kW]� One available height (14" [356 mm] for ALL models.� Quick assembly corners for easy installation.� Opening provided in bottom pan to match the

“Thru the Curb” electrical connection opening provided on the unit base pan.

� 2" [51 mm] x 4" [102 mm] Nailer provided.� Insulating panels provided.� Sealing gasket (28" [711 mm]) provided

with Roofcurb.� 18 gauge galvanized steel.

TYPICAL INSTALLATION

Roofcurb Model Height of CurbRXKG-CAD14 14" [356 mm]

DescriptionMPS-003A through -006A


6 TON UNIT:27.62" [701.5]MAX DUCT SIZE - 27.62" x 19.75" [701 x 505 mm] REF.

6 TON UNIT: 43.38"[1102 mm] REF.

NOTE: Condenser sectionoverhangs curb on 6 ton units

88 McQuay Cat 251-1

Accessories


ROOFCURBS (Full Perimeter):7.5-12.5 TONS [26.4 to 44 kW]� One available height 14" [356 mm] for ALL models.� Quick assembly corners for easy installation.� Opening provided in bottom pan to match the

“Thru the Curb” electrical connection opening provided on the unit base pan.

� 1" [25 mm] x 4" [102 mm] Nailer provided.� Insulating panels not required because of insulated

outdoor base pan.� Sealing gasket (40' [12.2 m]) provided



ROOFCURB INSTALLATION




Roofcurb Model Height of CurbRXKG-CAE14 14" [356 mm]

DescriptionMPS-007A through MPS-012A

McQuay Cat 251-1 89

Accessories

ROOFCURBS (Full Perimeter):15-20 TONS [52.8-70.3 kW]� One available height (14" [356 mm]).� Quick assembly corners for easy installation.� 1" [25.4 mm] x 4" [102 mm] Nailer provided.� Insulating panels not required because of insulated

outdoor base pan.� Sealing gasket (28" [711 mm]) provided


ROOFCURB ASSEMBLY




Roofcurb Model DescriptionRXKG-CAF14 MPS-015A through -020A

Height of Curb14" [356 mm]



90 McQuay Cat 251-1

Mechanical Specifications

PART 1: GENERAL1.01 Section Includes:

A. Commercial Packaged Rooftop air conditioners.1.02 REFERENCES

A. AFBMA 9—Load Ratings and Fatigue Life for Ball Bearings.B. AMCA 99—Standards HandbookC. AMCA 210—Laboratory Methods of Testing Fans for Rating Pur-

posesD. AMCA 300—Test Code for Sound Rating Air Moving DevicesE. AMCA 500—Test Methods for Louver, Dampers, and Shutters.F. ARI 410—Forced-Circulation Air-Cooling and Air-Heating Coils.G. ARI 430—Central-Station Air-Handling Units.H. ARI 435—Application of Central-Station Air-Handling Units.I. IBC 2000 – International Building CodeJ. NEMA MG1—Motors and GeneratorsK. National Electrical Code.L. NFPA 70—National Fire Protection Agency.M. SMACNA—HVAC Duct Construction Standards—Metal and Flex-

ible.N. UL 900—Test Performance of Air Filter Units.

1.03 SUBMITTALSA. Shop Drawings: Indicate assembly, unit dimensions, weight loading,

required clearances, construction details, field connection details, electrical characteristics and connection requirements.

B. Product Data:1. Provide literature that indicates dimensions, weights, capacities,

ratings, fan performance, and electrical characteristics and con-nection requirements..

2. Manufacturer’s Installation Instructions.1.04 OPERATION AND MAINTAINENCE DATA

A. Maintenance Data: Provide instructions for installation, maintenance and service

1.05 QUALIFICATIONSA. Manufacturer: Company specializing in manufacturing the Products

specified in this section with minimum five years documented experi-ence, who issues complete catalog data on total product.

B. Startup must be done by trained personnel experienced with rooftop equipment.

C. Do not operate units for any purpose, temporary or permanent, until ductwork is clean, filters and remote controls are in place, bearings lubricated, and manufacturers’ installation instructions have been fol-lowed.

1.06 DELIVERY, STORAGE, AND HANDLINGA. Deliver, store, protect and handle products to site.B. Accept products on site and inspect for damage.C. Store in clean dry place and protect from weather and construction

traffic. Handle carefully to avoid damage to components, enclosures, and finish.

PART 2: PRODUCTS2.01 MANUFACTURERS

A. The following manufacturers will be considered provided they comply with the contract documents. No substitutions will be permitted.

1. McQuay2. Trane3. Carrier4. York

2.02 GENERAL DESCRIPTIONA. Furnish as shown on plans, McQuay Packaged Systems, Singlezone

Heating and Cooling Unit(s) model MPS. Unit performance and electrical characteristics shall be per the job schedule.

B. Configuration: Fabricate as detailed on prints and drawings:1. Return plenum / economizer section2. Filter section3. Cooling coil section4. Supply fan section5. Gas heating section

6. Condensing unit sectionC. The complete unit shall be cULus listed. Gas furnace units shall be UL

listed and classified in accordance with ANSI-Z 21.47.D. Each unit shall be specifically designed for outdoor rooftop

application and include a weatherproof cabinet. Each unit shall be completely factory assembled and shipped in one piece. MPS packaged units shall be shipped fully charged with Refrig-erant 22 and oil.

E. The unit shall undergo a complete factory run test prior to shipment. The factory test shall include final balancing of the supply fan assem-blies, a refrigeration circuit run test, a unit control system operations checkout, a unit refrigerant leak test and a final unit inspection.

F. All units shall have decals and tags to indicate caution areas and aid unit service. Unit nameplates shall be fixed to the main control panel door. Electrical wiring diagrams shall be attached to the control panels. Installation, operating and maintenance bulletins and start-up forms shall be supplied with each unit.

G. Performance: All scheduled capacities and face areas are minimum accepted values. All scheduled amps, kW, and HP are maximum accepted values that allow scheduled capacity to be met.

H. Warranty: The manufacturer shall provide 12-month parts only war-ranty. Defective parts will be repaired or replaced during the warranty period at no charge. The warranty period shall commence at startup or six months after shipment, whichever occurs first.

I. The manufacturer shall provide extended 48-month, parts only, war-ranty on the compressor. Defective parts will be repaired or replaced during the warranty period at no charge. The warranty period shall commence at startup or six months after shipment, whichever occurs first.

2.03 CABINET, CASING, AND FRAMEA. Panel construction shall be 18 GA single wall construction with a

baked powder coat finish. Insulation shall be a minimum of 3/4" thick fiberglass with a foil face surface. Insulation shall be glued to the panel as well as mechanically fastened. In lieu of foil face insulation with mechanical fasteners, double wall construction may be substi-tuted. Panel design shall not have any exposed insulation edges.

B. Exterior surfaces shall be constructed of 18 GA, G90 galvanized, with a baked powder coat finish of a neutral beige color. Finished panel sur-faces to withstand a minimum 1000-hour salt spray test in accordance with ASTM B117 standard for salt spray resistance

C. Base frame shall be 14 GA galvanized steel and be a full perimeter design. The base frame shall have integral forklift slots and rigging holes. The unit base shall overhang the roof curb for positive water runoff and shall seat on the roof curb gasket to provide a positive, weather tight seal.

D. The full unit base pan shall be a one-piece stamped design. The base pan shall have a stamped 1 1/8” flange around the supply and return air openings to prevent any water to penetrate into the building. The base pan shall be insulated with foil face insulation with mechanical fasteners on the underside of the pan. The rooftop base pan shall not have insulation on the air stream side of the equipment

E. Service doors shall be provided on the filter section and the electrical control panel section. All service access doors shall be mounted on multiple hinges and shall be secured by a latch system. Removable panels secured by multiple mechanical fasteners are not acceptable.

2.04 SUPPLY FANA. Supply fan shall be a double width double inlet (DWDI) forward

curved centrifugal fan. The supply fan shall be mounted using solid-steel shafts and wheel hubs with mating keyways

B. The fan assembly shall have adjustable pitched sheaves on the motor. Bushings shall be used on all sheaves to allow for easy removal of the pulleys from the fan and motor shaft. Fixed bore pulleys fastened to the shaft by setscrews will not be allowed. The drives shall be selected with a 1.2 service factor.

C. All fan assemblies shall be statically and dynamically balanced at the factory, including a final trim balance, prior to shipment. All fan assemblies shall employ solid steel fan shafts. Bearings shall be sized

McQuay Cat 251-1 91

Mechanical Specifications

to provide a L-50 life of 250,000 hours. D. Fan motors shall be heavy-duty, 1800 rpm, open drip-proof (ODP).

Motors efficiencies shall meet EPAct efficiencies. Motors shall be mounted on an adjustable base that provides for proper alignment and belt tension adjustment.

E. The fan design shall allow for the fan and motor assembly to slide out of the rooftop unit for ease of servicing the equipment.

2.05 ELECTRICALA. Unit wiring shall comply with NEC requirements and with all appli-

cable UL standards. All electrical components shall be UL recognized where applicable. All wiring and electrical components provided with the unit shall be number and color-coded and labeled according to the electrical diagram provided for easy identification. The unit shall be provided with a factory wired weatherproof control panel. Unit shall have a single point power connection for main power connection. A terminal board shall be provided for low voltage control wiring. Each compressor and condenser fan motor shall be furnished with contactors and thermal overload protection. Supply fan motors shall have a factory installed and wired control contactor. Knockouts shall be provided in the bottom of the main control panels for field wiring entrance. A GFI outlet shall be unit mounted and require field power connection independent from the unit’s main power block and or disconnect.

B. A single non-fused disconnect switch shall be provided for disconnect-ing electrical power at the unit. Disconnect switches shall be mounted internally to the control panel and operated by an externally mounted handle

2.06 HEATING AND COOLING SECTIONSA. Direct expansion (DX) cooling coils shall be fabricated of seamless

high efficiency copper tubing that is mechanically expanded into high efficiency aluminum plate fins. Coils shall be a multi-row design. All units shall have two independent refrigerant circuits and shall use an interlaced coil circuiting that keeps the full coil face active at all load conditions. All coils shall be factory leak tested with high pressure air under water.

B. A non-corrosive stainless steel or polymer positively sloped drain pan shall be provided with the cooling coil. The drain pan shall extend beyond the leaving side of the coil and underneath the cooling coil connections. The drain pan shall have a minimum slope of 1/8" per foot to provide positive draining. The slope of the drain pan shall be in two directions and comply with ASHRAE Standard 62.1 The drain pan shall be connected to a threaded drain connection extending through the unit base.

C. The rooftop unit shall include a natural gas heating section. The heating module shall be a tubular design with in-shot gas burners. The heat exchanger tubes shall be constructed of stainless steel. The module shall have an induced draft fan that will maintain a negative pressure in the heat exchanger tubes for the removal of the flue gases.

D. The heater shall have an electronic direct spark ignition system with a remote flame sensor. The gas furnace shall have a flame rollout safety protection switches and a high temperature limit switch that will shut the gas valve off upon detection of improper burner manifold opera-tion. The induced draft fan shall have an airflow safety switch that will prevent the gas valve from turning on in the event of no airflow in the flue chamber.

E. A factory-installed DDC control system shall control the gas heat furnace. The control system shall shut down the entire heating system after two unsuccessful attempts at start-up and require a manual reset. Field installed heating systems shall require a field UL/ETL certifica-tion. The manufacturer’s rooftop unit UL/ETL certification shall cover the complete unit including the gas heating modules.

F. The heating modules shall have a field installed kit for conversion of the unit to LP gas.

2.07 FILTERSA. Unit shall be provided with a draw-through filter section. The filter

rack shall be designed to accept a 2” filter. The unit design shall have a hinged access door for the filter section. The manufacturer shall ship the rooftop unit with 2” construction filters. The contractor shall

furnish and install, at building occupancy, the final set of filters per the contract documents.

2.08 OUTDOOR / RETURN AIR SECTIONA. Unit shall be provided with an outdoor air economizer section.

The 0 to 100% outside air economizer section shall include outdoor, return, and exhaust air dampers. The outside and return air dampers shall be sized to handle 100% of the supply air volume. Damper blades shall be gasketed with side seals and jamb seals to provide an air leakage rate of 4 cfm / square foot of damper area at 1” differential pressure per ASHRAE 90.1 Energy Standard . Leakage rate to be tested in accordance with AMCA Standard 500. A barometric exhaust damper shall be provided to exhaust air out of the back of the unit. A bird screen shall be provided to prevent infiltration of rain and foreign materi-als. Exhaust damper blades shall be lined with vinyl gasketing on contact edges. Control of the dampers shall be by a factory installed direct coupled actuator. Damper actuator shall be of the modulating, spring return type. An adjustable enthalpy control shall be provided to sense the dry-bulb temperature and relative humidity of the outdoor air stream to determine if outdoor air is suitable for “free” cooling. If outdoor air is suitable for “free” cooling, the outdoor air dampers shall modulate in response to the unit’s temperature control system.

2.09 CONDENSING SECTIONA. Condenser coils shall be multi-row and fabricated from high

efficiency rifled copper tubing mechanically bonded to high effi-ciency aluminum fins. Each condenser coil shall be factory leak tested with high-pressure air under water. Condenser coils shall be protected from incidental contact to coil fins by a coil guard.

B. Condenser fans shall be direct drive, axial type designed for low tip speed and vertical air discharge. Condenser fan rpm shall be 1140 rpm maximum. Fan blades shall be constructed of steel and riveted to a steel center hub. Condenser fan motors shall be heavy-duty, non-reversing type with permanently lubricated ball bearing and thermal protection. Motor design shall be totally enclosed air over (TEAO) to protect the motors from rain and damage by water.

C. Low ambient cooling shall be allowed to 0 degrees F.D. Refrigerant gauge ports shall be external to the cabinet for

both low and high pressure for ease of service.E. Each unit shall have multiple, heavy-duty scroll compressors.

Each compressor shall be complete with gauge ports, anti-slug protection, motor overload protection and a time delay to prevent short cycling and simultaneous starting of compressors follow-ing a power failure. Compressors shall be isolated with resilient rubber isolators to decrease noise transmission.

F. Each unit shall have two independent refrigeration cir-cuits. Each circuit shall be dehydrated and factory charged with Refrigerant 22 and oil.

2.10 ROOF CURBA. A prefabricated 14-gauge galvanized steel, mounting curb shall

be provided for field assembly on the roof decking prior to unit shipment. The roof curb shall be a full perimeter type with com-plete perimeter support of the air handling section and condens-ing section. The curb shall be a minimum of 14" high and include a nominal 2" x 4" wood nailing strip. Gasket shall be provided for field mounting between the unit base and roof curb.

92 McQuay Cat 251-1

Wiring Schematics—MPS-003A/004A

McQuay Cat 251-1 93

Wiring Schematics—MPS-003A/004A

94 McQuay Cat 251-1

Wiring Schematics—MPS-005A

McQuay Cat 251-1 95


96 McQuay Cat 251-1


McQuay Cat 251-1 97


98 McQuay Cat 251-1


McQuay Cat 251-1 99

Wiring Schematics—MPS-007A-MPS-012A

100 McQuay Cat 251-1


McQuay Cat 251-1 101









Wiring Schematics—MPS-015A/MPS-020A












Notes

©2007 McQuay International • www.mcquay.com • 800-432-1342 6-07 DC Reference: RMQ-833, RMQ-835, RMQ-836, RMQ-837 Supersedes Form No. RMQ-833 Rev. 0

McQuay Training and DevelopmentNow that you have made an investment in modern, efficient McQuay equipment, its care should be a high priority. For training information on all McQuay HVAC products, please visit us at www.mcquay.com and click on training, or call 540-248-9646 and ask for the Training Department.

WarrantyAll McQuay equipment is sold pursuant to its standard terms and conditions of sale, including Limited ProductWarranty. Consult your local McQuay Representative for warranty details. Refer to Form 933-43285Y. To find your local McQuay Representative, go to www.mcquay.com.

This document contains the most current product information as of this printing. For the most up-to-date product infor-mation, please go to www.mcquay.com. Supersedes Form No. RMQ-833 Rev. 0

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