18
Table 1 — Physical Data — 50A Units (cont)
LEGEND
*Sizes 020 to 027: Circuit 1 uses the lower portion of condenser coil,
Circuit 2 uses the upper portion.
Sizes 030 and 035: Circuit 1 uses the upper portion of condenser coil,
Circuit 2 uses the lower portion.
Sizes 040 and 050: Circuit 1 uses the left condenser coil, Circuit 2 the right.
Size 060: Circuit A uses the two MCHX coils near the bulkhead, Circuit B
uses the two MCHX coils near the control box.
UNIT 50A 035 040 050 060
NOMINAL CAPACITY (tons) 35 40 50 60
BASE UNIT See Unit Weights Table
OPERATING WEIGHT (lb)
COMPRESSOR
Quantity ... Type (Ckt 1/Ckt 2) 2 ... ZP67/2…ZP104 2…ZP104/2…ZP104
2…ZP122/2…ZP122
2…ZP154/2…ZP154
Number of Refrigerant Circuits 22
2
2
Oil Precharged Precharged Precharged Precharged
REFRIGERANT R-410A
Operating Charge (lb), Ckt 1/Ckt 2
RTPF Coils
28.7/44.0 44.0/44.0 56.3/57.3 78.5/82.0
MCHX Coils
17.9/26.0 23.0/23.5 27.0/28.0 36.6/37.8
MCHX Coils with Humidi-MiZer
®
Coil
17.9/31.5 23.0/30.5 26.5/34.5 36.6/47.6
MCHX CONDENSER*
Quantity 1224
Total Face Area (sq ft) 32.9 65.8 65.8 105.2
RTPF CONDENSER
Quantity 1222
Rows...Fins/in 4...15 3...15 4...15 6...30
Total Face Area (sq ft) 33.3 66.7 66.7 100.0
CONDENSER FAN Propeller Type
Nominal Cfm 19,500 32,000 35,000 40,000
Quantity... Diameter (in.)
2 ... 30 4 ... 30 4 ... 30
4...30.5(MCHX),
6...30(RTPF)
Motor Hp 1111
EVAPORATOR COIL Cross-Hatched Copper Tubes, Aluminum Plate Fins with Intertwined Circuits
Tube Size (in.)
1
/
2
1
/
2
1
/
2
1
/
2
Rows ... Fins/in. 6 ... 16 4 ... 17 6 ... 16 4...17
Total Face Area (sq ft) 31.3 31.3 31.3 48.1
HUMIDI-MIZER COIL
Quantity 1111
Face Area (sq ft) 14.4 14.4 14.4 14.4
EVAPORATOR FAN Centrifugal Type
Quantity ... Size (in.) 2 ... 20 X 15 2 ... 20 X 15 2 ... 20 X 15 3 ... 20 X 15
Type Drive Belt Belt Belt Belt
Nominal Cfm 14,000 16,000 18,000 24,000
Motor Hp 15 20 25 15 20 25 20 25 30 25 30 40
Motor Frame Size 254T 256T 284T 254T 256T 284T 256T 284T 286T 284T 286T 324T
Motor Bearing Type Ball Ball Ball Ball
Maximum Allowable Rpm 1300 1300 1300 1200
Motor Pulley Pitch Diameter (in.) 5.15.76.25.35.77.55.76.26.75.35.96.5
Nominal Motor Shaft Diameter (in.) 1
5
/
8
1
5
/
8
1
7
/
8
1
5
/
8
1
5
/
8
1
7
/
8
1
5
/
8
1
7
/
8
1
7
/
8
1
7
/
8
1
7
/
8
2
1
/
8
Fan Pulley Pitch Diameter (in.) 8.7 8.7 8.7 9.5 9.5 11.1 9.5 9.5 9.5 9.1 9.5 9.5
Nominal Fan Shaft Diameter (in.) 1
15
/
16
1
15
/
16
1
15
/
16
1
15
/
16
Belt Quantity 222222222333
Belt Type 5VX500 5VX530 5VX550 5VX530 5VX550 5VX590 5VX550 5VX570 5VX570 5VX530 5VX550 5VX570
Belt Length (in.) 50 53 55 53 55 59 55 57 57 53 55 57
Pulley Center Line Distance (in.) 15.0-
17.9
15.0-
17.9
15.0-
17.9
15.0-
17.9
15.0-
17.9
14.6-
17.6
15.0-
17.9
14.6-
17.6
14.6-
17.6
15.2-
17.5
14.7-
17.2
14.2-
17.0
Factory Speed Setting (rpm) 1025 1147 1247 976 1050 1182 1050 1142 1234 1019 1087 1197
HIGH-PRESSURE SWITCH (psig)
Cutout 650 650 650 650
Reset (Auto.) 500 500 500 500
MIXED-AIR FILTERS
Quantity ... Size (in.) Standard 10 ... 20 x 24 x 2 10 ... 20 x 24 x 2 10 ... 20 x 24 x 2 16...20 x 24 x 2
8...20 x 20 x 4
8...20 x 24 x 4
Pleated 5 ... 20 x 20 x 4
5 ... 20 x 24 x 4
5 ... 20 x 20 x 4
5 ... 20 x 24 x 4
5 ... 20 x 20 x 4
5 ... 20 x 24 x 4
OUTDOOR-AIR FILTERS
Quantity...Size (in.) 8...16 x 25 x 2
4...20 x 25 x 2
8...16 x 25 x 2
4...20 x 25 x 2
8...16 x 25 x 2
4...20 x 25 x 2
12...16 x 25 x 2
6...20 x 25 x 2
POWER EXHAUST Direct Drive, Single-Phase Motors (Factory-Wired for High Speed Operation), Forward-Curved Fan Wheels
with Backdraft Dampers on Each Fan Housing
Motor, Quantity...Hp 4...1
11 x 10
4...1
11 x 10
4...1
11 x 10
6...1
11 x 10 Fan, Diameter...Width (in.)
MCHX— Microchannel Heat Exchanger
RTPF — Round Tube Plate Fin
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