DOAS Performance Catalog - Desert Aire

DOAS PerformanceCatalog

DOAS PerformanceCatalog

Foreword

Desert Aire has written this product summary catalog toprovide engineers and contractors a summary of our expansiveDX-DOAS product line to assist in selecting the appropriatesolution for your outdoor air handler solution.

Desert Aire's DX-DOAS units are engineered and manufacturedfor excellent performance, dependability and serviceability.is system does not just utilize standard air conditioningcomponents like many of the DOAS systems on the market.It consists of a specially designed evaporator coil along withrefrigeration components that provides maximum moistureremoval at the lowest energy consumption. Desert Aire’sDOAS products provide the highest Integrated SeasonalMoisture Removal efficiency (ISMRE) and Integrated Sea-sonal Coefficient of Performance (ISCOP) in the industry.

If a heat pump unit is selected, the patented design of DesertAire's heating circuit allows the designer to maintaindischarge temperature at the lowest winter design conditionsto provide the highest Integrated Seasonal Coefficient ofPerformance (ISCOP) and in many cases avoid using anyother new energy source for heating.

Due to our expansive product selection this summary willbe supplemented with our expertise from our rep network.Please contact your local rep or Desert Aire and we willprovide you further details on your required selection.

Keith CoursinPresidentDesert Aire [email protected]

Contents

Overview ..................................................................... 3

AHRI 920 Rating Summary .................................... 3• DX-DOAS definition• Integrated Seasonal Ratings

Performance Sheets .................................................. 8• Aura• TotalAire• VerticalAire

Conclusion ................................................................. 19

Overview

Several HVAC trade and professional organizations, includingASHRAE have documented the need for suitable indoor airquality. A primary requirement for maintaining proper IAQis through the introduction of varying amounts of outdoorair. e down side of adding outdoor air is that it also admitsexcess moisture into the facility. If this condition is not con-trolled, it can create an environment for mold, mildew,viruses and other potentially hazardous organisms to flourish.The key to preventing mold formation and growth is tocontrol the relative humidity within the space. A standardair conditioner cannot achieve this since it controls onlytemperature. Instead, a system must be implemented thatcan provide full control of both temperature and relativehumidity.

All Desert Aire DX-DOAS units are designed around areliable, efficient dehumidification system. ere are twomain reasons for using the dehumidifier as a base to build acomplete ventilation system:

• Significant additional energy costs will result if the latent cooling provided by a standard air handler is used for dehumidification. In contrast, dehumidifiers are the only efficient means to regulate moisture removal.

• DX-DOAS dehumidifiers are configured for the easy addition of optional components needed for a completesolution, options that offer effective solutions that are not otherwise available.

Product Series Summary

Desert Aire’s dehumidifiers provide you the most completesolution for your dedicated outdoor air system (DOAS). Ourmany options allow you to design and install the highestenergy saving solution for your compliance to ASHRAE 62.1code ventilation requirements for new construction andrenovation projects. This system allows the engineer toseparate the latent load of the building and deliver condi-tioned air to the space which will optimize the performanceof the building’s conventional heating and cooling systems.

Design Options

Desert Aire offers the widest range of performance optionson its three product platforms while maintaining its mainfocus: Meeting the target dewpoint while attaining the lowestoperational cost. In addition, the many options help toreduce the operating cost of the remainder of the building’s sensible cooling and heating systems. e design engineerhas the ability to configure the system with the followingconfiguration options.

• Energy Recovery - An enthalpy wheel can recover energy from the exhaust air stream

• Control Strategy - Multiple choices allows better energy efficiency

• Choice of Condensers - Air, water or geothermal (or combinations)

• Auxiliary Heating -Many options including:- Gas-Electric- Hot water or Steam Coils- Geothermal

• Miscellaneous Options -Indoor/Outdoor systems, fan discharge direction, coated coils and better filtration are just a few of the many additional configuration options available.

AHRI 920 Performance Rating

and Comparisons of DX-DOAS

Unit Efficiency

Introduction to AHRI 920

In 2015, the Air-Conditioning, Heating, and RefrigerationInstitute (AHRI) introduced a performance rating for dedicatedoutside air systems. All references in this document refer tothe AHRI Standard 920 (I-P) document. is was a verytimely announcement as it corresponded with the increasingdemands for measurable energy efficiency solutions andmethods to reduce global warming. At the same time theASHRAE SPC90.1- 2016 committee was updating theirstandard and wished to include minimum rating values forthis type of product. is application note will provide thebackground on the AHRI 920 standard as well as anoverview on how to use the rating values.

3

e latest versions of ASHRAE 90.1-2013 energy standard isemphasizing the importance of off-peak conditions. Keep inmind that design conditions occur less than 1% of the time,so the system functions for most of its operating life at partloads. Like the chiller product's integrated part load values(IPLV) and air-conditioners IEER and SEER, the new DOASstandard has introduced its own version of integrated values.

DX-DOAS Definition

DX-Dedicated Outdoor Air Systems (DX-DOAS) conditionoutdoor ventilation air independently from the buildingHVAC system. This approach to handling ventilation airresults in superior humidity control by limiting the primarysource of humidity in most buildings – ambient humiditycarried in by the ventilation air – directly at its source beforeit enters the building. e decoupling of the ventilation air'srequirements from the building's internal sensible require-ments allows both systems to be designed for maximumenergy efficiency. The energy savings can be obtained byrunning the separate, sensible cooling only, interior coolingsystem less oen or at a higher evaporating temperature, thusimproving the overall energy efficiency.

Further energy savings may be realized by providing only theamount of ventilation air necessary and/or by using energyrecovery from the building exhaust air to precondition theventilation air.

While the concept of introducing ventilation air is simpleenough, in actual practice there are many different configu-rations that can be utilized to solve this goal. ese differentconfigurations have a significant impact on the energyefficiency of the DX-DOAS units, so the first step in theevaluation is to determine what configuration will be usedat the specific jobsite. e category choices are:

• Energy recovery pre-conditioning.If exhaust air can be brought back to the DOAS unit, then pre-conditioning the outside air with an energy recovery wheel or plate heat exchanger will improve theenergy efficiency of the system.

• Condenserere are several condenser types that impact the minimum efficiency of ASHRAE 90.1-2016- Air-cooled (either split or packaged)- Water-cooled (water temperature will impact

system efficiency)

• Cooling Towere dehumidification only system utilizes a cooling tower water loop for its condensing water source. e temperature of the fluid usually varies from 55°F to 90°F.

• Chilled Watere dehumidification only system utilizes a chilled water loop for its condensing water source. e tem-perature of the fluid usually varies from 40°F to 60°F

• Ground source, closed loopA heat pump that uses fluid circulated through a subsurface piping loop as a heat source/heat sink. e temperature of the fluid is related to climate and operating history conditions and usually varies from 25°F to 100°F.

• Ground-water sourceA heat pump that uses water pumped from a well, lakeor stream as a heat source/heat sink. e temperature of the water is related to climate conditions andusually ranges from 45°F to 75°F for deep wells.

• Water source

A heat pump that uses fluid circulated in a common piping loop as a heat source/heat sink. e temperature of the piping loop fluid is usually mechanically controlled within a moderate temperature range of 61°F to 89°F.

is rating standard has been developed to provide designengineers with a relative guide to quantify the energy aDX-DOAS system will consume while dehumidifying andreheating ventilation air to a neutral 70°F condition at severaldifferent outside air conditions. Unlike air conditioning sys-tems, the dehumidification process requires the system tocondition the air to the design dewpoint (this is establishedat a 55°F dewpoint in the case of this standard) in order toremove the moisture before it enters the space. e systemthen must use 75% to 90% site recovered energy, no newenergy, to reheat to the neutral condition as stated inASHRAE 90.1. Use of the hot gas reheat coil is a commonsolution utilized to achieve the site recovered requirement.e ambient conditions that the unit must be designed forvary throughout the year, so the AHRI standard utilizes fourdifferent dehumidification entering air conditions or ratingpoints as a method to demonstrate the moisture removal effi-ciency (MRE) at part load conditions. is is expressed asthe amount of moisture removed per kilowatt-hour ofenergy used.

4

Refer to Figure 1 for a psychrometric plot of the calculationof the total cooling required to meet the 55°F dewpoint andthe amount of moisture that must be removed. In order tomeet this demand, DOAS units must have a very low sensibleheat ratio and have unique refrigeration circuits to handlethis wide range of entering air conditions. A detail psychro-metric review can be found in Desert Aire's TechnicalBulletin #3, Dehumidification and the Psychrometric Chart.

C

ΔGR

DReheated

Air (Supply)

A Entering Air

BLeavingEvaporatorCoil

QL

QSQT

Figure 1. Calculation of Total Cooling Required for a DOAS Design.

If the system is a heat pump, the standard also defines tworating points for winter heating. e heating performance isstated as coefficient of performance (COP), which is units ofwatt output divided by the watt input. Refer to Tables 1 and2 for the input values based on the configuration selected forthe specific application.

Figure 2.

To model real world conditions, the standard also has estab-lished an external static pressure for various supply airvolumes and has added a pumping penalty to account for theenergy consumption adder of water-cooled systems.

Dehumidification

A

B

C

D

Heating

E

F

°Fdb

95

80

68

60

35

16

°Fwb

78

73

66

58

29

12

°Fdb

75

75

75

75

70

70

°Fwb

62.5

62.5

62.5

59.6

58.5

58.5

Cooling Tower

85

80

68

55

N/A

N/A

Chilled Water

45

45

45

45

N/A

N/A

°Fdb

95

80

68

60

35

16

Rating Condition Outdoor Air EnteringTemperatures

Exhaust AirTemperatures

Inlet FluidTemperatures

Ambient Air

Table 1. Operating Conditions for Air & Water-Cooled Systems (Table 2 - AHRI 920)

5

Integrated Seasonal Ratings

e AHRI committee used a composite bin hour data set ofmultiple cities to provide a weighted value moisture removalefficiency and coefficient of performance value. isweighted value puts emphasis on the part load values in cal-culating the integrated seasonal ratings. Table 3 lists theweighting percentage values. e integrated seasonal valuesare defined as a weighted average of the individual ratingpoint values and are expressed in pounds of moisture perkilowatt (MRE) in the dehumidification mode and in wattsinput per watts output (COP) in the winter heating mode ifthe system is a heat pump.

Table 3. Weighting Percentages for Integrated Ratings

It is important to note that the rating standard adds therequirement that if the DOAS unit cannot bring the leavingair temperature back to 70°F with recovered energy, that asupplementary heat penalty be incorporated based on theuse of an electric heater. An alternative method would be toutilize a larger compressor that provides excess capacity toreheat the air to 70°F at a higher input power.

Dehumidification

A

B

C

D

Heating

E

F

°Fdb

95

80

68

60

35

16

°Fwb

78

73

66

58

29

12

°Fdb

75

75

75

75

70

70

°Fwb

62.5

62.5

62.5

59.6

58.5

58.5

Closed Loop

85

80

70

70

41

32

Ground Water

70

70

50

50

70

50

Water Source

85

85

75

75

75

70

Rating Condition Outdoor Air EnteringTemperatures

Exhaust AirTemperatures

Inlet FluidTemperatures

Rating Point

Condition A

Condition B

Condition C

Condition D

Weight %

12%

28%

36%

24%

Rating Point

Condition E

Condition F

Weight %

77%

23%

COPMRE

Table 2. Operating Conditions for Heat Pump Systems (Table 3 - AHRI 920)

ISMRE = (MREa•0.12) + (MREb•0.28) + (MREc•0.36)+(MREd•0.24)whereMREa = Standard Rating Condition A (95°Fdb / 78°Fwb)MREb = Standard Rating Condition B (80°Fdb / 73°Fwb)MREc = Standard Rating Condition C (68°Fdb / 66°Fwb)MREd = Standard Rating Condition D (60°Fdb / 58°Fwb)

ISCOP = (COPe•0.77) + (COPf•0.23)whereCOPe = Standard Rating Condition E (35°Fdb)COPf = Standard Rating Condition F (16°Fdb)

In the dehumidification mode some systems need to increasetheir hot gas bypass capacity at the C and D conditions.ese systems use the recovered energy to prevent the evap-orator coil from freezing instead of directing the energy tothe hot gas reheat coil, therefore not having enough energyto meet the 70°F requirement. is standard thus allows anappropriate comparison by allowing those systems to usemore energy to reach the required leaving air temperature.

6

Likewise, in the winter heat pump mode some systems areunable to heat the winter outdoor air to the required 70°Fminimum value listed in the standard. e penalty adds anelectric heater to make up the difference. Such a system willhave a lower COP, but be in compliance of the 70°F leaving airtemperature specification.

For systems that are not equipped with a heat-pump modeof operation, the type and efficiency of supplementary heatsources will be published with manufacturers data. eseheat source types and efficiency should be reviewed carefullywhen making comparisons between different types ofmanufacturers’ equipment.

Common Features

Desert Aire's DOAS-DX product lines all share the followingcommon features.

• Standard DOAS or Heat Pump (water or geothermal) option

• Modulating hot gas reheat system• Auxiliary heat options

- Electric- Hot water coils- Gas (not available on VerticalAire™)

• Electronic expansion valves • Building management interfaces• CO2 Based Outside Air Modulation• Dew Point Control Based Sequence of Operation• Mixed Air Option

Aura™ Series Features

• Package Air-cooled option available• 2 inch double wall roof & 1-1/2 side wall

construction• Enthalpy wheel option• Plenum fan

TotalAire™ Features

• Package Air-cooled option available• 1 inch double wall construction• Enthalpy wheel option up to 30 ton

VerticalAire™ Features

• Compact size- 4 to 15 ton fits through standard 3' door- 20 to 30 ton fits on freight elevator

IAQ Product Series

e following table summarizes the three different productseries that Desert Aire offers in its DOAS product line.

• Indoor Small Footprint Applications

• Standard Door & Double Door Passage

• Recirculation / HOAS is available

• 8 - 30 ton Staged Compressors

• Air-Cooled, Water-Cooled, Water Source Heat Pump & Dry Coolers

550 to 8,000 CFM

Airflow RangeUsed for

VerticalAire™ (4 to 30 tons)


Aura™ (8 to 30 tons WITHOUT Exhaust Air Energy Recovery)

960 to 12,000 CFM

• Outdoor Air-Cooled Package Applications (Staged Compressors)

• Indoor or Outdoor Water Source Applications (Inverter Compressor)



Aura™ (8 to 30 tons WITH Exhaust Air Energy Recovery)

1,600 to 12,000 CFM

• Enthalpy Wheel for Exhaust Air Recovery

• Outdoor Air-Cooled Packaged Applications (Staged Compressors)




TotalAire™ (2 to 60 tons WITHOUT Exhaust Air Energy Recovery)

960 to 12,000 CFM

• Small Outdoor Air-Cooled Packaged Applications (2 - 6 Ton)

• Indoor or Outdoor Installations • Air-Cooled, Water-Cooled, Water Source Heat Pump & Dry Coolers


TotalAire™ (2 to 30 tons WITH Exhaust Air Energy Recovery)

1,600 to 12,000 CFM

• Enthalpy Wheel for Exhaust Air Recovery

• Outdoor Air-Cooled Packaged Applications (Staged Compressors)



• Air-Cooled, Water-Cooled, Water Source Heat Pump & Dry Coolers

7

Aura™ Series

Desert Aire's Aura™ Series DX-DOAS system provides fourmajor option configurations to choose from:

• Air-Cooled Packaged

• Air-Cooled Packaged with Enthalpy Wheel

• Water-Cooled Heat Pump

• Water-Cooled Heat Pump with Enthalpy Wheel

e Aura™ Series features a double wall construction cabinetwith a powder coated galvanneal steel outer wall and a sturdygalvanized inner panel. Hinged access doors allow easy accessto internal components within each section. Each door hasan adjustable cam operated latch and weatherproof compressiongaskets between the door and unit casing to produce anairtight seal. e outdoor cabinet includes a rain hood andoutside air dampers with actuator. e system eliminatesstanding roof seams by using a fully weatherproof membraneroof which is sloped to the secondary service side for waterdrainage. e roofing membrane is a thick laminate whichis UV resistant and UL-790 approved.

e system uses an easily serviced plenum fan that providesuniform air distribution across the gas or electric heating elements.

Desert Aire’s enthalpy wheel recovers a significant amountof energy from exhaust air. is wheel is a rotary counterflowair-to-air device that transfers both sensible and latent heatbetween air streams. Filtered outdoor air encounters theupper half of the wheel while exhaust air flows through thelower half of the wheel. As the wheel rotates during ventilation,it recovers valuable energy. Except for its rotation, the wheelis a passive device. For more information read Desert Aire’sTechnical Bulletin 19 -Energy Recovery Wheel Technology.

8

Series

AHRI 920 Performance

Ton8101215202530

208/3/6050 to 10060 to 12065 to 13580 to 16085 to 170105 to 210120 to 250

460/3/6030 to 6035 to 7040 to 7040 to 8045 to 9050 to 11055 to 120

L159159159159185185185

Airflow Range (cfm)960 to 3,200

1,200 to 4,0001,400 to 4,8001,800 to 6,0002,400 to 8,0003,000 to 10,0003,600 to 12,000

MCA Footprint (in)W74747474106106106

H50505050747474

Avg. Wt. (lbs.)2,5002,7002,6002,8004,6004,7005,100

Ton8101215202530

CFM1,8002,0402,0602,8004,1704,1705,540

A5.24.75.05.25.55.66.0

B8.07.27.47.78.68.28.4

C8.27.47.37.79.07.87.8

D5.95.14.95.16.25.23.8

ISMRE7.26.46.46.77.76.96.64.8

E4.03.73.93.84.13.83.9

F3.43.23.43.33.53.33.5

ISCOP3.93.73.83.84.03.73.82.0

Dehumidification Conditions (MRE) Heating Conditions (COP)

ASHRAE 90.1 ISCOP MinimumASHRAE 90.1 ISMRE Minimum

Ton8101215202530

CFM1,8002,0402,0602,8004,3404,3305,810

A5.24.75.05.25.35.55.8

B7.36.66.87.17.77.47.8

C8.27.47.37.79.07.97.8

D5.95.14.95.16.15.23.6

ISMRE7.06.36.26.57.56.76.364.0

E6.05.65.85.86.96.15.6

F6.25.86.05.96.76.25.7

ISCOP6.15.65.85.86.96.15.63.5



Ton8101215202530

CFM1,8002,2102,2103,0204,5004,6606,250

A6.95.86.16.37.06.87.0

B8.77.77.57.89.28.28.6

C8.27.67.47.79.08.07.8

D5.95.04.95.06.15.13.5

ISMRE7.56.76.66.88.07.06.65.0

E5.85.45.65.66.45.75.3

F4.74.34.54.44.74.44.6

ISCOP5.75.35.55.56.25.65.23.2



Ton8101215202530

CFM1,4401,6301,9002,1803,3404,2505,150

A4.64.34.44.24.74.95.0

B6.35.65.65.45.95.76.6

C7.57.17.17.17.67.78.0

D5.85.55.65.76.06.16.2

ISMRE6.46.06.06.06.46.56.84.0

E F ISCOP

N/AAir-Cooled System

Only


ASHRAE 90.1 ISMRE Minimum

Aura™ Water Source Heat Pump with Water Source

Aura™ Water Source Heat Pump with Ground Source, Closed Loop

Aura™ Air-Cooled Packaged

Aura™ Water Source Heat Pump with Ground-water Source

9

Ton8101215202530

208/3/6050 to 7560 to 9065 to 10080 to 12085 to 130105 to 160120 to 185

460/3/6030 to 4535 to 5040 to 5540 to 6045 to 7050 to 8055 to 90

L310310310310332332332

Airflow Range (cfm)1,600 to 3,2002,000 to 4,0002,400 to 4,8003,000 to 6,0004,000 to 8,0005,000 to 10,0006,000 to 12,000


H72727272999999

Avg. Wt. (lbs.)4,6004,6004,7004,7008,1008,3008,700

Ton8101215202530

CFM3,2003,9004,1405,5008,0009,08011,310

A9.47.38.17.58.88.98.3

B10.68.69.28.610.210.09.2

C8.27.17.26.58.27.67.0

D6.45.15.74.56.05.94.7

ISMRE8.46.97.36.58.17.87.04.8

E7.97.07.46.28.17.66.2

F10.69.310.08.410.810.38.4

ISCOP8.27.27.66.48.47.96.44.8



Ton8101215202530

CFM3,2003,9004,1405,5008,0009,08011,310

A9.47.38.17.58.88.98.3

B11.39.29.89.110.910.69.6

C8.27.17.26.58.27.67.0

D6.45.15.74.56.05.94.7

ISMRE8.57.07.56.68.37.97.15.2

E6.86.06.45.46.76.45.4

F8.47.27.96.78.07.96.8

ISCOP6.96.16.55.56.86.55.63.8



Ton8101215202530

CFM3,2003,2803,8704,5906,8108,70010,200

A7.67.27.47.08.08.07.7

B9.28.18.07.88.69.08.5

C7.66.86.86.47.16.76.1

D8.18.38.17.19.68.26.8

ISMRE8.17.67.57.08.37.87.15.2

E F ISCOP


Only



Ton8101215202530

CFM3,2004,0004,3505,8208,0009,57011,880

A11.58.89.28.211.010.09.1

B11.99.79.88.611.610.59.5

C8.27.07.06.18.27.36.7

D6.45.05.44.06.05.54.3

ISMRE8.97.27.46.38.77.86.95.8

E7.76.76.45.17.06.35.4

F9.78.27.66.38.17.66.4

ISCOP7.96.96.55.27.16.55.54.0



Aura™ w/wheel - Water Source Heat Pump with Water Source

Aura™ w/wheel - Water Source Heat Pump with Ground Source, Closed Loop

Aura™ w/wheel - Air-Cooled Packaged

Aura™ w/wheel - Water Source Heat Pump with Ground-water Source

Series


WITH

Energy Recovery Wheel

10

TotalAire™ Series

Desert Aire's TotalAire™ Series DX-DOAS system providessix major option configurations to choose from:

• Air-Cooled Packaged

• Air-Cooled Packaged with Enthalpy Wheel

• Air-Cooled Split

• Air-Cooled Split with Enthalpy Wheel


• Water-Cooled Heat Pump with Enthalpy Wheel

• Water-Cooled Tower/Chiller

• Water-Cooled Tower/Chiller withEnthalpy Wheel

e TotalAire™ Series features a double wall constructioncabinet with a powder coated galvanneal steel outer wall anda sturdy galvanized inner panel. Hinged access doors shallallow easy access to internal components within each section.Each door shall have a minimum of two cam latches. Weath-erproof compression gaskets shall seal between the door andunit casing to produce an airtight seal. e unit is designedfor complete access for service and maintenance from oneside only. Outdoor cabinets include a rain hood and isolationdampers with actuator and have a fully weatherproof roofwith a cross broken roof for water drainage.

11

Ton23581015202530364046505660

208/3/6025 to 4030 to 5035 to 6055 to 8565 to 16085 to 160110 to 170130 to 210140 to 250145 to 270165 to 300233 to 370245 to 390255 to 410275 to 430

460/3/6015 to 2217 to 2820 to 3330 to 4535 to 5545 to 9060 to 9570 to 11575 to 13580 to 15090 to 165130 to 200135 to 215140 to 225150 to 235

L103103103130130130139145145154154154166166166

Airflow Range (cfm)250 to 650

400 to 1,000550 to 1,600850 to 2,200

1,150 to 3,0001,650 to 4,2002,500 to 2,8003,100 to 7,6003,800 to 9,0004,700 to 10,0005,500 to 12,0006,100 to 12,0006,700 to 15,0007,700 to 16,0008,500 to 18,000


H444444494949536464767676848484

Avg. Wt. (lbs.)1,2001,2001,4002,3002,8003,4003,9004,6004,8005,5006,0006,3006,5007,0007,500

Ton23581015202530364046505660

CFM410655

1,1301,6502,0202,9003,9405,2006,0606,7008,1409,0509,98010,36011,690

A5.36.16.16.16.05.76.16.26.06.06.16.05.85.55.6

B6.17.17.17.37.06.87.27.27.17.17.37.16.96.56.6

C6.16.96.96.96.16.06.46.76.46.46.46.36.15.75.7

D4.45.05.25.34.74.65.15.14.95.14.94.94.84.74.5

ISMRE5.66.46.56.56.05.86.36.46.26.26.26.26.05.65.74.8

E2.83.23.33.43.13.23.43.43.43.23.13.13.13.02.9

F1.21.51.51.61.61.71.81.61.61.81.61.61.71.91.7

ISCOP2.42.82.93.02.82.93.03.03.02.82.82.82.72.82.72.0



Ton23581015202530364046505660

CFM410655

1,1301,6502,0202,9003,9405,2006,0606,7008,1409,0509,98010,36011,690

A5.36.16.16.16.05.76.16.26.06.06.16.05.85.55.6

B5.86.66.76.76.56.36.66.86.76.66.76.66.46.06.2

C6.16.96.96.96.16.06.46.76.46.46.46.36.15.75.7

D4.45.05.25.34.74.65.15.14.95.14.94.94.84.74.5

ISMRE5.56.26.36.35.95.76.16.36.16.16.16.05.85.55.54.0

E5.15.85.76.25.75.65.65.65.45.45.15.35.14.94.7

F4.75.35.35.65.25.15.35.35.15.45.25.25.14.94.8

ISCOP5.05.75.66.05.65.55.65.65.35.45.15.35.14.94.73.5



Ton23581015202530364046505660

CFM415695

1,1851,8802,2803,3204,3605,3706,3407,5608,94010,16011,39011,68013,070

A6.27.47.28.07.67.27.57.16.97.57.67.47.26.76.7

B6.88.07.88.88.27.98.27.87.78.38.38.27.97.47.5

C6.17.07.06.86.25.96.36.76.46.36.66.26.05.65.6

D4.55.15.25.14.74.54.95.14.94.95.04.84.74.54.3

ISMRE5.96.96.87.16.66.36.66.76.46.66.86.66.36.05.95.0

E4.75.35.25.55.15.05.25.25.04.84.84.74.64.44.3

F3.43.73.83.03.23.33.83.93.83.53.53.23.23.63.5

ISCOP4.44.94.94.94.74.64.94.94.84.54.54.44.34.24.13.2



Series


TotalAire™ Water Source Heat Pump with Ground Source, Closed Loop

TotalAire™ Water Source Heat Pump with Water Source

TotalAire™ Water Source Heat Pump with Ground-water Source

12

Series AHRI 920

Performance Ton23581015202530364046505660

CFM365585

1,0101,4901,8202,6203,5804,6905,5106,1107,4008,2109,0209,42010,650

A4.85.45.65.35.55.45.75.85.85.75.95.65.65.45.6

B6.87.97.98.08.07.88.38.18.18.38.58.28.17.88.0

C7.88.98.910.29.59.79.810.39.910.510.49.710.19.69.5

D5.66.26.48.07.47.88.08.27.98.68.37.88.38.17.9

ISMRE6.67.57.68.58.18.28.48.68.48.98.88.38.68.38.24.0

Dehumidification Conditions (MRE)


Ton23581015202530364046505660

CFM410655

1,1301,6502,0202,9003,9405,2006,0606,7008,1409,0509,98010,36011,690

A5.46.26.26.26.15.96.36.46.26.26.46.26.05.75.9

B6.27.27.27.47.17.07.47.47.47.47.67.47.16.87.0

C6.47.37.37.56.66.67.17.47.27.27.17.16.86.56.6

D4.75.35.45.75.15.25.75.75.55.75.55.65.45.35.2

ISMRE5.86.76.76.96.36.36.86.96.76.86.86.76.56.26.34.9



Ton23581015202530364046505660

CFM415695

1,1851,8802,2803,3204,3605,3706,3407,5608,94010,16011,39011,68013,070

A6.77.97.58.88.27.98.17.67.48.38.28.17.97.47.4

B7.38.58.29.58.78.69.08.48.29.28.98.88.68.28.2

C6.57.57.47.56.86.67.17.57.17.17.47.06.96.46.4

D4.85.45.55.85.15.05.55.75.55.55.65.45.35.14.9

ISMRE6.37.37.27.87.16.97.47.37.17.47.57.37.16.76.76.0



TotalAire™ Air-Cooled Split

TotalAire™ Water-Cooled using Cooler Tower Condenser Water

TotalAire™ Water-Cooled using Chilled Water

Ton23581015202530

CFM365585

1,0101,4901,8202,6203,5804,6905,510

A4.04.84.84.65.14.95.05.25.2

B5.66.86.76.87.36.97.27.27.1

C6.07.47.27.17.77.47.28.07.5

D4.45.25.15.66.16.05.96.36.0

ISMRE5.36.46.36.46.96.66.67.16.74.0ASHRAE 90.1 ISMRE Minimum


TotalAire™ Air-Cooled Packaged

13

Ton23581015202530

208/3/6020 to 3025 to 4040 to 5560 to 7570 to 110

100 to 130130 to 170160 to 215190 to 250

460/3/6012 to 1813 to 2020 to 3030 to 4035 to 5550 to 6565 to 8580 to 11095 to 125

L4949130138141154165165165

Airflow Range (cfm)550 to 1,250900 to 1,750

1,500 to 3,0002,000 to 4,1002,700 to 5,4003,900 to 8,0005,500 to 10,8006,800 to 12,5006,800 to 12,500


H505055647684939393

Avg. Wt., (lbs.)1,8001,9002,3003,4005,0006,7007,50010,00011,000

Ton23581015202530

CFM965

1,3602,3403,3904,1005,9708,46010,35012,950

A10.49.810.010.010.09.310.69.79.2

B10.39.810.010.010.09.310.69.69.1

C8.38.18.18.58.27.68.77.57.3

D4.54.94.93.13.02.63.23.22.5

ISMRE8.28.08.17.87.67.18.27.36.95.2

E5.55.15.35.85.75.46.25.55.0

F6.96.16.56.46.25.16.96.25.9

ISCOP5.85.35.65.95.85.36.45.75.23.8



Ton23581015202530

CFM965

1,3602,3403,3904,1005,9708,46010,35012,950

A10.49.810.010.010.09.310.69.79.2

B9.79.29.49.59.48.810.09.38.7

C8.38.18.18.58.27.68.77.57.3

D4.54.94.93.13.02.63.23.22.5

ISMRE8.07.87.97.67.56.98.07.26.84.8

E7.27.17.07.47.36.67.56.75.9

F8.78.28.28.68.48.38.67.87.3

ISCOP7.67.47.37.67.67.07.76.96.24.8



Ton23581015202530

CFM1,0701,4802,5403,6804,4206,4909,05010,35013,840

A12.411.211.311.611.510.212.110.69.9

B11.610.610.611.111.09.611.510.29.4

C8.27.77.88.28.07.18.47.57.0

D4.34.64.72.72.72.42.93.22.3

ISMRE8.78.28.28.18.07.18.47.66.95.8

E6.96.56.56.76.85.87.06.55.4

F7.76.87.17.17.06.47.56.96.3

ISCOP7.16.66.66.86.95.97.16.65.64.0



TotalAire™ Water Source Heat Pump with Ground Source, Closed Loop

TotalAire™ Water Source Heat Pump with Water Source

TotalAire™ Water Source Heat Pump with Ground-water Source

Series


WITH

Energy Recovery Wheel

14

Ton23581015202530

CFM895

1,2752,2003,1903,8505,6207,9609,86012,230

A10.09.59.89.59.89.210.59.79.3

B11.711.111.311.511.310.512.210.810.5

C10.711.010.811.911.010.311.39.39.0

D6.06.96.84.94.54.04.74.83.6

ISMRE9.89.99.99.89.48.79.98.78.15.2

E F ISCOPDehumidification Conditions (MRE) Heating Conditions (COP)



Ton23581015202530

CFM965

1,3602,3403,3904,1005,9708,46010,35012,950

A10.59.910.110.110.19.510.99.99.4

B10.510.010.110.210.19.511.09.89.4

C8.78.58.69.18.68.19.37.97.7

D4.85.25.23.43.22.93.43.42.8

ISMRE8.58.38.48.27.97.48.67.67.25.3




Ton23581015202530

CFM1,0701,4802,5403,6804,4206,4909,05010,35013,840

A13.111.811.812.312.210.813.311.110.4

B12.311.111.111.711.610.312.810.79.9

C8.68.38.28.78.57.69.47.97.4

D4.54.94.93.02.92.53.53.42.4

ISMRE9.28.78.78.68.47.59.48.07.26.6




TotalAire™ Air-Cooled Split

TotalAire™ Water-Cooled using Cooler Tower Condenser Water

TotalAire™ Water-Cooled using Chilled Water

Series


Ton23581015202530

CFM895

1,2752,2003,1903,8505,6207,9609,86012,230

A8.68.69.28.89.18.49.48.38.3

B9.99.910.610.410.59.510.89.19.2

C8.89.610.010.510.09.29.87.67.7

D4.96.06.34.13.93.43.93.62.9

ISMRE8.18.79.28.88.67.88.67.27.05.2




TotalAire™ Air- Cooled Packaged

15

VerticalAire™ Series

Desert Aire's VerticalAire™ Series DX-DOAS system providestwo major option configurations to choose from:

• Air-Cooled Split


• Water-Cooled Tower/Chiller

e VerticalAire™ Series has a compact cabinet design thatprovides flexibility in locating the unit in a wide variety ofindoor locations. It features a double walled steel constructioncabinet design with galvanized outer and inner panels for the20 to 30 ton systems. Our smaller VerticalAire™ systems arenormally installed in close proximity to the room beingconditioned, so these systems have their compressors ina separate section and avoids propagating noise through theduct work.

16

Series

AHRI 920 Performance Heat Pump

Ton0405081015202530

208/3/6030 to 6035 to 7040 to 8550 to 10570 to 14085 to 170125 to 230140 to 260

460/3/6015 to 3017 to 3520 to 4525 to 5535 to 7545 to 9055 to 11065 to 120

L3535464646787878

Airflow Range (cfm)550 to 1,600550 to 1,700850 to 2,250

1,150 to 3,0001,650 to 4,2502,550 to 6,0003,100 to 7,5003,750 to 8,300

W3939424242646464

H6060808080707070

MCA Footprint (in)Avg. Wt., (lbs.)

700735

1,0501,1001,6002,9003,1003,200

Ton4581015202530

CFM930

1,1301,6502,0202,9004,0805,1105,880

A6.16.26.16.05.76.25.95.7

B6.76.86.66.56.26.86.56.3

C6.97.06.66.15.96.56.35.9

D5.15.25.24.74.65.14.84.7

ISMRE6.36.46.25.85.66.26.05.74.8

E5.85.76.15.75.55.65.55.2

F5.45.35.65.25.15.25.14.9

ISCOP5.75.66.05.65.45.55.45.12.0



Ton4581015202530

CFM930

1,1301,6502,0202,9004,0805,1105,880

A6.16.26.16.05.76.25.95.7

B7.07.27.37.06.77.47.16.8

C6.97.06.66.15.96.56.35.9

D5.15.25.24.74.65.14.84.7

ISMRE6.46.66.46.05.86.46.15.84.8

E3.23.43.43.13.23.43.33.3

F1.41.61.61.61.71.61.61.7

ISCOP2.83.03.02.82.93.02.92.92.0



Ton4581015202530

CFM935

1,1851,8802,2803,3204,4305,5906,580

A7.27.38.07.67.27.67.16.8

B7.88.08.78.27.98.27.87.6

C6.97.26.86.25.96.56.25.8

D5.15.35.14.64.45.14.84.4

ISMRE6.87.07.16.56.26.86.46.14.8

E5.45.35.55.15.05.25.04.8

F3.83.93.03.13.33.73.53.4

ISCOP5.05.04.94.74.64.84.74.42.0



VerticalAire™ Water Source Heat Pump with Water Source

VerticalAire™ Water Source Heat Pump with Ground Source, Closed Loop

VerticalAire™ Water Source Heat Pump with Ground-water Source

17

Series


Ton4581015202530

CFM835

1,0101,4901,8202,6203,7004,6105,340

A5.65.65.45.55.35.85.65.5

B8.08.08.28.07.78.48.07.9

C9.49.010.89.49.39.99.69.0

D6.76.48.67.47.57.97.77.4

ISMRE7.97.78.98.07.98.58.27.95.2




Ton4581015202530

CFM930

1,1301,6502,0202,9004,0805,1105,880

A6.26.26.16.15.96.46.15.9

B7.27.37.47.16.97.67.37.0

C7.47.47.46.66.57.36.96.6

D5.45.55.75.15.25.65.45.2

ISMRE6.76.86.86.36.26.96.66.35.2



N/AWater-Cooled System

Ton4581015202530

CFM935

1,1851,8802,2803,3204,4305,5906,580

A7.77.78.78.17.98.17.67.4

B8.48.49.58.68.58.88.38.1

C7.47.57.46.76.57.36.96.4

D5.45.65.65.04.95.65.34.9

ISMRE7.27.37.77.06.97.47.06.75.2



N/AWater-Cooled System

VerticalAire™ Water-Cooled using Cooling Tower Condenser Water

VerticalAire™ Water-Cooled using Chilled Water

VerticalAire™ Air-Cooled Split

18

Rating Notes Applicable to all Models Featured in this Publication

• Desert Aire has rated their systems at an air volume that meets the 55°F leaving air dewpoint for this specific compressor capacity. is selection produces the minimumMRE/COP efficiency level for this model size. All lower air volumes that could yield a lower leaving air dewpoint will produce a higher MRE/COP than is shown above.

• ISMRE values and the individual rating points A/B/C/D rated at lb of moisture/kWh and ISCOP values and the individual rating points E/F rated at W/W

• ASHRAE Minimum values are referenced from ASHRAE 90.1 - 2013 addendum cd

• MRE and COP rating based on AHRI 920 specified ESP and no auxiliary heat

• Airflow range depends on outside air design conditions and target leaving air dewpoint

Conclusion

The introduction of ventilation air is required by local and national building codes.However, just delivering the air does not eliminate indoor air quality problems. Theair must be conditioned to avoid impacting the performance of the internal heatingand cooling equipment and to avoid the introduction of moisture into the space.

DOAS units operate in many different climates and can be selected with a wide varietyof designs and condensing options. is makes it difficult to compare the energy efficiencyof treating outside air from one design to another or from one manufacturer to anothermanufacturer. However, this is extremely important as the process of treating outside airto improve indoor air quality is energy intensive. e AHRI920 standard is a tool that canbe used to compare the energy efficiency of different manufacturers' offerings to optimizethe energy consumption for the end user. In addition, ASHRAE has established minimum energy efficiency rating values for DOASunits. is provides the designer with a single metric value which can be added to the scopeof work and specification in order to assure the performance of the DOAS unit. Refer toDesert Aire’s Application Note #24 for a payback calculation which translates the performancemetric into anticipated energy savings based on local utility rates.

19

N120 W18485 Freistadt Road,

Germantown, WI 53022

www.desert-aire.com [email protected]

Telephone: (262) 946-7400 FAX: (262) 946-7401

430 2016/02

OPTIMIZING SOLUTIONS THROUGH SUPERIOR DEHUMIDIFICATION TECHNOLOGY

Documents

DOAS Performance Catalog - Desert Aire