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Use of the AHRI Certified TM Mark indicatesa manufacturer’s participation in the program.For verification of certification for individualproducts, go to www.ahridirectory.org .
426 41 1701 01 08/16/11
PAJ3Product Specifications
13 SEER, R−410APACKAGE AIR CONDITIONER FOR MANUFACTURED HOUSING, RESIDENTIAL, AND LIGHT COMMERCIAL APPLICATIONS2 − 5 TONSSingle Phase, 208/230 V, 60 HzBUILT TO LAST, EASY TO INSTALL AND SERVICE• Compact, fully self−contained, electric cooling unit with horizontal supply and return ducts
• Light weight, compact construction ideal for manufactured housing and residential applications
• Environmentally sound R−410A refrigerant
• Vibration isolation provides quiet operation. Compressors have internal over current protection
• Liquid refrigerant filter driers
• Hand holds built into the unit base pan
• Designed to be serviced from both the side and front
• Accessory electric heaters with single point connections
• Durable pre−painted steel cabinet
• No−rust base pan with integrated drain pan standard on all units
• Direct−drive ECM multispeed, blower motor standard on all models
• Louvered coil enclosure for protection against vandalism and hail damage
• Aerodynamic fan blade design reduces the overall sound
• All models available with optional factory installed tin−coated copper evaporator coil. (These models are identified with letters TP in the 11th and 12th positions in the model numbers)
LIMITED WARRANTY*• 5−year parts limited warranty (including compressor and coils)−With timely registration, an additional 5 year parts limited warranty (including compressor and coils)*Applies to original purchaser/homeowner, some limitations may apply. See warranty certificate for details.
UNIT PERFORMANCE DATA
Model Number
COOLING Unit Dimensions H x W x D in [mm ]
OperatingWeight lbs [kg]Capacity BTU/h SEER EER
PAJ324000K000APAJ324000KTP0A 22,800 13.5 11.5 30 [765] x 51 [1295] x 32 [813] 237 [108]
PAJ330000K000APAJ330000KTP0A 28,400 13.2 11.5 30 [765] x 51 [1295] x 32 [813] 249 [113]
PAJ336000K000APAJ336000KTP0A 34,800 13.5 11.5 30 [765] x 51 [1295] x 32 [813] 279 [127]
PAJ342000K000APAJ342000KTP0A 40,500 13.5 11.5 34 [867] x 51 [1295] x 32 [813] 303 [138]
PAJ348000K000APAJ348000KTP0A 46,500 13.2 11.0 34 [867] x 51 [1295] x 32 [813] 305 [139]
PAJ360000K000APAJ360000KTP0A 55,000 13.2 11.0 42 [1070] x 51 [1295] x 32 [813] 352 [160]
2 Specifications subject to change without notice. 426 41 1701 01
MODEL NOMENCLATURE
MODEL SERIES1 2, 3 4 5,6 7,8,9 10 11,12 13 14 15
P AJ 3 36 000 K 00 0 A 1P = Package
AJ = Air Conditioner
3 = 13 SEER24 = 2 Tons30 = 2.5 Tons36 = 3 Tons
42 = 3.5 Tons
48 = 4 Tons60 = 5 Tons NOMINAL COOLING CAPACITY
000 = no factory heat NOMINAL HEATING BTUH (input)
K = 208/230−1−60 VOLTAGE00 = No optionsTP − Tin Plated Evaporator Main Tubes FACTORY INSTALLED OPTIONS
0 = Standard FEATURE CODESales Model Digit
Engineering Digit
3Specifications subject to change without notice.426 41 1701 01
AHRI CAPACITY RATINGS − COOLING CAPACITIES AND EFFICIENCIES
PAJ3 NOMINAL TONS STANDARD CFMNET COOLING CAPACITY
AT 95�F (35�c) (Btuh) EER† SEER**24 2 800 22800 11.5 13.530 2.5 1000 28400 11.5 13.236 3 1200 34800 11.5 13.542 3.5 1400 40500 11.5 13.548 4 1600 46500 11 13.260 5 1750 55000 11 13.2
LEGENDdB−Sound Levels (decibels)db—Dry BulbSEER—Seasonal Energy Efficiency Ratiowb—Wet BulbCOP−Coefficient of Performance* Air Conditioning Heating & Refrigeration Institute† At ”A” conditions−80�F (26.7�C) indoor db/67�F (19.4�C) indoor wb & 95�F (35�C) outdoor db.** Rated in accordance with U.S. Government DOE Department of Energy) test procedures and/or AHRI Standards210/240−08.
Notes:1. Ratings are net values, reflecting the effects of circulating fan heat.Ratings are based on:Cooling Standard: 80�F (26.7�C) db, 67�Fwb (19.4�C) indoor entering−airtemperature and 95�F db (35�C) outdoor entering−air temperature.2. Before purchasing this appliance, read important energy cost andefficiencyinformation available from your retailer.
A−Weighted Sound Power Level (dBA)
PAJ3STANDARD RATING
(dBA)TYPICAL OCTAVE BAND SPECTRUM (dBA without tone adjustment)
125 250 500 1000 2000 4000 800024 72 58 66.5 63.5 64.5 60.5 57.5 51.530 76 62.5 68 64.5 68 67.5 58.5 5336 77 67.5 70 70 70.5 66 60.5 5542 76 65 69 68.5 70 67.5 63 58.548 77 68.5 68 71 70.5 65.5 61.5 5560 80 66.5 70 75.5 75.5 71.5 66.5 58
PHYSICAL DATA − PAJ3UNIT SIZE 24 30 36 42 48 60NOMINAL CAPACITY (ton) 2 2.5 3 3.5 4 5SHIPPING WEIGHT (lb) (kg)
286130
298136
329150
352160
354161
402183
COMPRESSOR TYPE RECIPROCATING SCROLLREFRIGERANT R-410AREFRIGERANT QUANTITY (lb) QUANTITY (kg)
3.31.5
4.01.8
5.32.4
5.92.7
5.02.3
6.22.8
METERING DEVICE ID Piston TXVORIFICE OD (in.) (mm)
0.0591.50
0.0591.50
0.0671.70
0.0731.85
0.0822.08 N/A
OUTDOOR COILROWS...FINS/in.FACE AREA (sq. ft)
1...209.1
1...209.1
2...209.1
2...2010.2
2...2010.2
2...2013.0
OUTDOOR FANNOMINAL AIRFLOW (CFM)DIAMETER (in.)DIAMETER (mm)MOTOR HP (RPM)
240020508
1/8 (800)
240020508
1/8 (800)
270020508
1/4 (1050)
270020508
1/4 (1050)
270020508
1/4 (1050)
300020508
1/3 (1100)INDOOR COILROWS...FINS/in.FACE AREA (sq. ft)
2...124.3
3...124.3
3...124.3
3...124.9
3...124.9
3...126.1
INDOOR BLOWERNOMINAL COOLING AIRFLOW(CFM)NOMINAL SIZE L x D (in.) (mm)MOTOR (HP)
800
10 x 8254 x 203
1/3
100010 x 8
254 x 2031/3
120011 x 9
279 x 2291/2
140011 x 9
279 x 2291/2
160011 x 9
279 x 2293/4
1750
11 x 10279 x 254
1HIGH-PRESSURE SWITCH (psig)CUTOUTRESET (AUTO)
650 +/- 15420 +/- 25
RETURN-AIR FILTERSTHROWAWAY (in.) (mm)
20x20x1
508x508x25
20x24x1
508x610x25
24x30x1
610x762x25
24x36x1
610x914x25*Required filter sizes shown are based on the AHRI (Air Conditioning, Heating and Refrigeration Institute) rated airflow at a velocity of 300 ft/min forthrowaway type or 450 ft/min for high capacity type. Recommended filters are 1−in. (25.4 mm) thick.
4 Specifications subject to change without notice. 426 41 1701 01
PAJ3 ACCESSORIESAccessory Model Number Description Use With
CPLOWAMB001A00 Motormaster� II Low Ambient Control ALLCPHSTART002A00 Compressor Start Kit ALLCPCRKHTR007A00
240V Crankcase Heater24 − 42
NPCRKHTR004A00 48 − 60ELECTRIC HEATERS
Accessory Model Number Nominal Capacity Stages Circuit Breaker Use WithCPHEATER125A00 3.8 / 5.0 1 NO ALLCPHEATER126A00 3.8 / 5.0 1 YES ALLCPHEATER127A00 5.6 / 7.5 2 NO ALLCPHEATER128A00 5.6 / 7.5 2 YES ALLCPHEATER129A00 7.5 / 10.0 2 NO 24 − 48CPHEATER130A00 7.5 / 10.0 2 YES ALLCPHEATER131A00 11.3 / 15.0 2 YES 36 − 60CPHEATER132A00 15.0 / 20.0 2 YES 48 − 60
Note: If installing an accessory heater, the thermostat must have capability to energize ”G” (fan) on a call for ”W” (strip heat).
Multiplication FactorsHEATER kW RATING VOLTAGE DISTRIBUTION MULTIPLICATION FACTOR
240
200 .69208 .75230 .92240 1.00
Example: 15.0 kW (at 240v) heater on 208v = 15.0 (.75 mult factor) = 11.25 capacity at 208v
5Specifications subject to change without notice.426 41 1701 01
UNIT DIMENSIONS − PAJ324−36
PA
J324
PA
J330
PA
J336
6 Specifications subject to change without notice. 426 41 1701 01
UNIT DIMENSIONS − PAJ342−60
PA
J342
PA
J348
PA
J360
7Specifications subject to change without notice.426 41 1701 01
SELECTION PROCEDUREA. DETERMINE COOLING AND HEATING REQUIREMENTS
AT DESIGN CONDITIONS.Given:Required Cooling Capacity (TC) 34,000 Btuh. . . . . . .Sensible Heat Capacity (SHC) 25,000 Btuh. . . . . . . . .Required Heating Capacity 15,000 Btuh. . . . . . . . . . . .Outdoor Entering−Air Temperature 95° F (35° C). . . .Indoor Entering−Air Temperature 80° F edb (26.7° C);
67° F (19.4° C) ewbIndoor−Air Quantity 1200 CFM. . . . . . . . . . . . . . . . . . . .External Static Pressure 0.20 IN. W.C.. . . . . . . . . . . .Electrical Characteristics (V−Ph−Hz) 230−1−60. . . . . .
B. SELECT UNIT BASED ON REQUIRED COOLINGCAPACITY.
Enter Cooling Capacities table at condenser enteringtemperature of 95° F (35° C), indoor air entering at 1200 CFMand 67° F (19.4° C) ewb. The PAJ336 unit provides a totalcooling capacity of 34,500 Btuh and a sensible heat capacity of26,040 Btuh.For indoor−air temperature other than 80° F (26.7° C) edb,calculate sensible heat capacity correction, as required, usingthe formula found following the Cooling Capacities tables.NOTE: Unit ratings are net capacities.
C. SELECT ELECTRIC HEAT.The required heating capacity is 15,000 Btuh (given).Determine the electric heat capacity in kW.
15,000 Btuh
3414 Btuh/kW= 3.8 kW of heat required
Enter the Accessory Electric Heater table on page 4 for 208/230,single−phase, PAJ336 unit. The 5−kW heater at 240v mostclosely satisfies the heating required. To calculate kW at 230 V,multiply the heater kW by multiplication factor 0.92 found in theMultiplication Factors table on page 4.5 kW x 0.92 = 4.6 kW4.6 kW x 3414 Btuh/kW = 15,704 Btuh
D. DETERMINE FAN SPEED AND POWER REQUIREMENTSAT DESIGN CONDITIONS.
Before entering the air delivery tables, calculate the total staticpressure required. From the given, Filter Pressure Drop table,and the Accessory Electric Heat Pressure Drop table find:External static pressure 0.20 IN. W.C.Filter 0.10 IN. W.C.Electric Heat 0.04 IN. W.C.Total static pressure 0.34 IN. W.C.
Enter the table for Dry Coil Air Delivery — Horizontal Discharge.At 0.4 IN. W.C. external static pressure and medium speed, themotor delivers 1236 CFM.
8 426 41 1701 01
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9426 41 1701 01
CO
OL
ING
CA
PAC
ITIE
S (
CO
NT
)
PA
J336
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AIR
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07
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31.6
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27.8
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3.09
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22.7
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3.38
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34.8
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2.59
32.5
229
.76
2.75
30.1
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2.91
27.8
927
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3.08
25.5
525
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3.24
22.7
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3.38
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35.6
625
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2.59
33.2
324
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2.76
30.7
223
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2.93
28.1
822
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24.8
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.62
3.21
21.1
319
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3.31
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38.9
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2.62
36.5
325
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2.81
33.9
624
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3.00
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723
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3.19
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922
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3.35
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3.44
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2.66
40.5
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2.86
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3.25
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2.78
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3.15
26.9
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3.31
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3.45
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35.9
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2.61
33.6
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2.79
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2.96
29.3
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3.15
27.0
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3.32
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2.62
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3.13
25.6
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3.25
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3.36
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2.64
37.4
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3.21
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3.39
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3.49
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43.6
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2.68
41.3
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2.88
38.7
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3.08
36.0
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3.28
33.0
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3.47
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3.65
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10
57 (
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36.6
736
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2.63
34.6
934
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2.82
32.6
432
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3.01
30.5
130
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3.21
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728
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3.38
25.1
125
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3.51
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36.9
635
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2.63
34.7
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2.82
32.6
932
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3.02
30.5
630
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3.21
28.2
128
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3.39
25.1
625
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37.4
128
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2.64
34.8
627
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2.82
32.1
826
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525
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3.17
26.2
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3.29
22.4
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3.40
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40.6
429
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2.66
38.1
628
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2.86
35.4
727
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3.05
32.6
226
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3.24
29.6
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3.42
25.6
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3.54
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44.2
823
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2.70
41.9
822
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2.90
39.3
621
.78
3.10
36.5
420
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3.30
33.5
419
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3.50
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See L
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No
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PA
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32.9
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3.62
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3.77
24.7
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3.20
39.6
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3.47
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3.73
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49.8
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3.25
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3.55
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3.46
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3.71
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3.92
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3.72
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3.78
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3.30
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3.91
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3.57
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4.26
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3.34
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3.64
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724
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See L
eg
en
d a
nd
No
tes o
n p
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0
10 426 41 1701 01
CO
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PAC
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4.73
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3.45
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7.4
53
2.7
45
.75
52
.99
31
.21
6.3
44
8.2
02
9.5
86
.97
* A
t 75°
F e
nte
rin
g d
ry b
ulb
- T
en
nessee V
alle
y A
uth
ori
ty (
TV
A)
ratin
g c
on
ditio
ns;
all
oth
ers
at
80°
F d
ry b
ulb
.
LE
GE
ND
BF
— B
yp
ass F
acto
rE
wb
— E
nte
rin
g W
et-
Bu
lbkW
— T
ota
l U
nit P
ow
er
Inp
ut
SH
C —
Sen
sib
le H
eat
Cap
acity (
10
00
Btu
h)
TC
— T
ota
l C
ap
acity (
10
00
Btu
h)
(net)
NO
TE
S:
1. D
irect
inte
rpo
latio
n is p
erm
issib
le. D
o n
ot
ext
rap
ola
te.
2.
Th
e f
ollo
win
g f
orm
ula
s m
ay b
e u
sed
:
Sens
ible
cap
acity
(B
tuh)
1.10
x c
fm
t ldb
= t e
db − Wet−
bulb
tem
pera
ture
cor
resp
ondi
ng t
o en
thal
py
air
leav
ing
evap
orat
or c
oil (
h lw
b)t lw
b =
tota
l cap
acity
(B
tuh)
4.5
x cf
mh l
wb
= h
ewb −
Wh
ere
: hew
b =
En
thalp
y o
f air
en
teri
ng
evap
ora
tor
co
il3.
Th
e S
HC
is
based
on
80
° F
(2
6.7
°C)
ed
b t
em
pera
ture
of air
en
teri
ng
in
do
or
co
il.
Belo
w 8
0°
F
(26
.7°C
) ed
b,
su
btr
act
(co
rr facto
r x c
fm)
fro
m S
HC
. A
bo
ve 8
0°
F (
26
.7°C
) ed
b,
ad
d (
co
rr facto
r x c
fm)
to S
HC
. C
orr
ectio
n F
acto
r =
1.1
0 x
(1
- B
F)
x (e
db
- 8
0).
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE 11426 41 1701 01
Filter Pressure Drop (IN. W.C.)
UNIT SIZEPAJ3
FILTERSIZE in.
(mm) 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200
2420x20x1(508x508
x25)0.06 0.07 0.08 0.10 0.12 0.13 0.14 0.15 — — — — — — — — — —
3020x24x1(508x610
x25)— — — 0.08 0.09 0.10 0.11 0.13 0.14 0.15 0.16 — — — — — — —
36 − 4224x30x1(610x762
x25)— — — 0.04 0.05 0.06 0.07 0.07 0.08 0.09 0.10 — — — — — — —
48 − 6024x36x1(610x914
x25)— — — — — — — 0.06 0.07 0.07 0.08 0.09 0.09 0.10 0.11 0.12 0.13 0.14
Accessory Electric Heat Pressure Drop (IN. W.C.)
HEATER kW
CFM
800 1000 1200 1400 1600 1800 2000 2200
5−20 0.033 0.037 0.042 0.047 0.052 0.060 0.067 0.075
Wet Coil Delivery*— (Deduct 10% for 208−Volt Operation)UNITPAJ3 SPEED TAP
AIRDELIVERY2
EXTERNAL STATIC PRESSURE (in. W.C.)0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
241 CFM 965 818 777 731 670 617 563 489 451 3912 CFM 1003 921 890 850 809 756 700 659 597 5393 CFM 1103 1068 1034 996 962 930 892 821 791 742
301 CFM 1052 1018 984 943 914 879 833 795 732 6782 CFM 1141 1107 1069 1036 1006 974 932 899 856 7843 CFM 1246 1213 1181 1144 1108 1078 1043 1015 973 931
361 CFM 1281 1225 1178 1142 1098 1053 1008 935 878 8402 CFM 1359 1321 1278 1236 1201 1160 1109 1068 992 9413 CFM 1476 1441 1403 1366 1323 1289 1245 1201 1159 1117
421 CFM 1453 1408 1373 1337 1295 1255 1215 1177 1134 10682 CFM 1544 1507 1475 1436 1397 1359 1326 1290 1246 12013 CFM 1614 1575 1542 1509 1467 1430 1395 1358 1323 1267
481 CFM 1657 1625 1590 1554 1517 1486 1448 1417 1381 13402 CFM 1707 1673 1644 1614 1586 1549 1515 1479 1449 14073 CFM 1931 1900 1870 1840 1809 1778 1749 1714 1683 1646
601 CFM 1837 1798 1753 1716 1677 1637 1590 1549 1497 14452 CFM 1910 1872 1835 1795 1748 1711 1673 1623 1568 15253 CFM 2098 2065 2032 1996 1956 1917 1877 1839 1798 1753
*Air delivery values are based on operating voltage of 230v, wet coil, without filter or electric heater. Deduct filter and electric heater pressure drops toobtain static pressure available for ducting.NOTES:1. Do not operate the unit at a cooling airflow that is less than 350 cfm for each 12,000 Btuh of rated cooling capacity. Evaporator coil frosting may occurat airflows below this point.2. Standard Cubic Feet per Minute.
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE12 426 41 1701 01
TYPICAL WIRING SCHEMATIC 208/230−1−60
24 V
olt
The
rmos
tat
Con
nect
ions
24 V
olt
The
rmos
tat
Con
nect
ions
24 V
olt
The
rmos
tat
Con
nect
ions
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE 13426 41 1701 01
TYPICAL FIELD WIRING
Note: 20 kW shown. Smaller heater have fewer elements and controls. Single-Phase Accessory Electric Heater Wiring
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE14 426 41 1701 01
Electrical Data
UNITPAJ3 V-PH-HZ
RANGE OFM IFM NOMINAL FLA MCAMOCP **MIN MAX RLA LRA FLA FLA kW * 208 240 208 230
24 208/230-1-60 197 253 8.5 43.0 0.9 2.8
-/- - - 14.3 14.3 203.8/5 18.0 20.8 26.0 29.5 30/30
5.6/7.5 27.0 31.3 37.3 42.6 40/457.5/10 36.1 41.7 48.6 55.6 50/60
30 208/230-1-60 197 253 10.9 54.0 0.9 2.8
-/- - - 17.4 17.4 253.8/5 18.0 20.8 26.0 29.5 30/30
5.6/7.5 27.0 31.3 37.3 42.6 40/457.5/10 36.1 41.7 48.6 55.6 50/60
36 208/230-1-60 197 253 13.1 74.0 1.5 4.1
-/- - - 22.0 22.0 303.8/5 18.0 20.8 27.6 31.1 30/35
5.6/7.5 27.0 31.3 38.9 44.3 40/457.5/10 36.1 41.7 50.3 57.3 60/6011.3/15 54.1 62.5 72.8 83.3 80/90
42 208/230-1-60 197 253 15.7 88.0 1.5 4.1
-/- - - 25.2 25.2 403.8/5 18.0 20.8 27.6 31.1 40
5.6/7.5 27.0 31.3 38.9 44.3 40/457.5/10 36.1 41.7 50.3 57.3 60/6011.3/15 54.1 62.5 72.8 83.3 80/90
48 208/230-1-60 197 253 21.8 117.0 1.5 6.0
-/- - - 34.8 34.8 503.8/5 18.0 20.8 34.8 34.8 50/50
5.6/7.5 27.0 31.3 41.3 46.6 50/507.5/10 36.1 41.7 52.6 59.6 60/6011.3/15 54.1 62.5 75.1 85.6 80/90
15.0/20.0 72.1 83.3 97.6 111.6 100/125
60 208/230-1-60 197 253 27.6 135.0 1.9 7.6
-/- - - 44.0 44.0 603.8/5 18.0 20.8 44.0 44.0 60/60
5.6/7.5 27.0 31.3 43.3 48.6 60/607.5/10 36.1 41.7 54.6 61.6 60/7011.3/15 54.1 62.5 77.1 87.6 80/90
15.0/20.0 72.1 83.3 99.6 113.6 100/125* kW @ 208/240** HACR Type Circuit breakerLEGENDFLA − Full Load AmpsLRA − Locked Rotor AmpsMCA − Minimum Circuit AmpsMOCP − Maximum Overcurrent ProtectionRLA − Rated Load AmpsNOTES:1. In compliance with NEC (National Electrical Code) requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the overcurrentprotective device for the unit shall be Power Supply fuse. The CGA (Canadian Gas Association) units may be fuse or circuit breaker. 2. Minimum wire size is based on 60�C copper wire. If other than 60�C wire is used, or if length exceeds wire length in table, determine size from NEC.
*Heater capacity (kW) based on heater voltage of 208v & 240v. If power distribution voltage to unit varies from rated heater voltage, heater kW will vary accordingly.
OPERATING SEQUENCECooling OperationWith a call for cooling (Y/G), the contactor is energized whichbrings on the compressor and outdoor fan. The indoor fan is alsoenergized. When the cooling demand is met, Y and G arede−energized shutting off the contactor. The indoor fan stops aftera 60 second delay.
Heating OperationWith a call for heating (W2), the auxiliary or electric heat energizesalong with the indoor blower. In case of staged heating, W3 isenergized if the demand is not met. The highest airflow selected isrun while the electric heat is in operation. When heating demand ismet, W3 and W2 sequentially de−energize shutting off the indoorfan and the electric heater.
Continuous FanWith the continuous indoor fan option selected on the thermostat,G is continuously energized keeping the indoor fan running at alltimes.
APPLICATION DATACondensate trap — A 2−in. (51 mm) condensate trap must be fieldsupplied.
1” (25 mm) MIN.
2” (51 mm) MIN.
TRAPOUTLET
A08001
Maximum cooling airflow — To minimize the possibility ofcondensate blow−off from the evaporator, airflow through the unitsshould not exceed 450 CFM/ton.Minimum cooling airflow — The minimum cooling airflow is 350cfm/ton.Minimum cooling operating outdoor air temperature — Allstandard units have a minimum ambient operating temperature of40°F (4.4°C). With accessory low ambient temperature kit, unitscan operate at temperatures down to 0°F (−17.8°C).Maximum operating outdoor air temperature — Maximumoutdoor operating air temperature for cooling is 125°F (51.7°C).
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE 15426 41 1701 01
TYPICAL INSTALLATION
TOP COVER
INDOORTHERMOSTAT
DISCONNECTPER NEC(UNIT ANDELECTRICHEATER)
FROMPOWERSOURCE
RETURNAIR
POWERENTRY
COMPOSITERUST-PROOFBASEPAN
CONDENSATEDRAINCONNECTION
Power Wiring
Control Wiring
Condenser Airflow
Evaporator Airflow
LOW VOLTAGEENTRY
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE16 426 41 1701 01
ENGINEERS’ SPECIFICATION GUIDEGENERALFurnish and install outdoor package, electrically controlled, airconditioner utilizing a reciprocating or scroll compressor for coolingduty. Unit shall discharge supply air horizontally as shown oncontract drawings.Nominal unit electrical characteristics shall be ______ v, ______ph, 60 Hz. The unit shall be capable of satisfactory operationwithin voltage limits of ______ v to ______ v. Unit power wiringshall enter unit cabinet at a single location.Separate power supply shall not be required for electric heat.
COOLING CAPACITYTotal cooling capacity of the unit shall be _____ Btuh or greater,and sensible capacity shall be ______ Btuh or greater atconditions of ______ cfm indoor air entering unit at ______�F drybulb, _____�F wet bulb and outdoor entering air of ______�F drybulb. Total design conditions shall be a minimum of ______Btuh/Watt. The unit shall be capable of cooling operation down to40�F (4.4�C) as shipped from the factory.
CABINETUnit cabinet shall be constructed of phosphated, bonderized,zinc−coated, prepainted steel. Basepan shall be made of asingle−piece non−corrosive, composite material.Evaporator−fan compartment interior cabinet surfaces shall beinsulated with a minimum 1/2−in. (12.7 mm) thick, flexiblefiberglass insulation, coated on the air side with aluminum foil.Cabinet panels shall be easily removable for servicing.Outdoor coil shall be protected by metal louvered panels.
COMPRESSORCompressor shall be fully hermetic type with external vibrationisolation.
CONDENSER SECTIONCondenser fan shall be of the direct−driven propeller type blades,riveted to corrosion−resistant spiders, and shall be dynamicallybalanced and discharge air vertically upwards.Condenser coils shall have aluminum−plate fins mechanicallybonded to copper tubes with all joints brazed.Tube sheet openings shall be belled to prevent tube wear.
EVAPORATOR SECTIONFan shall be multi−speed with direct drive motor as shown on theequipment drawings.Fan wheel shall be made from steel, be double−inlet type withforward−curved blades with a corrosion−resistant finish anddynamically balanced.Evaporator coils shall have aluminum−plate fins mechanicallybonded to copper tubes with all joints brazed.Tube sheet openings shall be belled to prevent tube wear.
MOTORSCompressor motors shall be of the refrigerant cooled type with linebreak thermal and current overload protection.All fan motors shall have permanently lubricated bearings, andinherent automatic reset thermal overload protection.Condenser fan motor shall be totally enclosed.
REFRIGERANT SYSTEMRefrigerant system shall include fixed orifice or TXV meteringsystem.
CONTROLSUnit shall be complete with self−contained low voltage controlcircuit.
APPROVALSUnit shall be UL listed as a total package for safety requirements.All wiring shall be in accordance with NEC.Unit shall be rated in accordance with AHRI Standards 210/240.Cabinet insulation shall conform to ASHRAE Standard 62.2Insulation and adhesive shall meet NFPA 90A requirements forflame spread and smoke generation.Unit shall have a sloped drain pan that conforms to ASHRAEStandard 62.2.
ACCESSORIESField−installed accessories shall include solid−state compressorshort−cycle device, outdoor thermostat, room thermostats, electricheaters with single−point connection, crankcase heater, andlow−ambient kit.
