Carrier 50PG20 - Page 6

6
Table 1—Physical Data
UNIT 50PG 20 24 28
VOLTAGE
208/230 a nd
460
575
208/230 a nd
460
575
208/230 a nd
460
575
NOMINAL CAPACITY (Tons)
18 20 25
OPERATING WEIGHT (lb)
50 Ser ies (L ow Heat) Al/Al
2367 2367 2483 2483 2668 2668
COMPRESSOR
Scroll
Quantity
2 2 2 2 3 3
Number of Refrigerant Circuits
2 2 2 2 2 2
Oil (ounces) Comp A1, A2, B1
85, NA , 85 85, NA , 85 85, NA, 85 85, NA, 85 85, 85, 85 85, 85, 85
REFRIGERANT TYPE
Puron® (R-410A)
Expansion Device
TXV TXV TXV TXV TXV TXV
Operating Charge (lb) — Standard Unit
Circuit A
25.3 25.3 29.2 29.2 49.3 49.3
Circuit B
25.3 25.3 30.1 30.1 24.3 24.3
Tota l Charge
50.6 50.6 59.3 59.3 73.6 73.6
OPERATING CHARGE (lb) —Unitwith
H u m i d i --- M i Z e r ™ System
Circuit A
42.9 42.9 46.5 46.5 66.1 66.1
Circuit B
39.8 39.8 44.5 44.5 35.7 35.7
Tota l Charge
82.7 82.7 91.0 91.0 101.8 101.8
REFRIGERANT SUBCOOLER
Heat Exchanger Size
B15H x 26 x 26 B15H x 26 x 26 B15H x 26 x 26 B15H x 26 x 26 B15H x 26 x 36 B15H x 26 x 36
Expansion Device
TXV TXV TXV TXV TXV TXV
CONDENSER COIL
Face Split
Rows...Fins/inch
2...17 2...17 3...17 3...17 3...17 3...17
Length of Coil (Between Tube Sheets) (in.)
80.3 80.3 80.3 80.3 80.3 80.3
Width (in.)
60 60 60 60 60 60
Tota l Fa ce area ( sq ft)
33.46 33.46 33.46 33.46 33.46 33.46
CONDENSER FAN
Nominal Cfm (Total, all fans)
14,000 14,000 21,000 21,000 21,000 21,000
Quantity...Diameter (in.)
4...22 4...22 6...22 6...22 6...22 6...22
Motor Hp...Rpm
1/
4...1100
1/
4...1100
1/
4...1100
1/
4...1100
1/
4...1100
1/
4...1100
Watts input (Total)
1400 1400 2100 2100 2100 2100
HUMIDI-MIZERt COIL
Weight
80 80 80 80 100 100
Rows...Fins/Inch
2...15 2...15 2...15 2...15 2...15 2...15
Length of Tube Sheets (in.)
56 56 56 56 56 56
Width (in.)
32 32 32 32 44 44
Tota l Fa ce Area (sq ft)
12.4 12.4 12.4 12.4 17.1 17.1
EVAPORATOR COIL
Face Split
Rows...Fins/inch
4...15 4...15 4...15 4...15 4...15 4...15
Length of Coil (Between Tube Sheets) (in.)
69.4 69.4 69.4 69.4 69.4 69.4
Width (in.)
48 48 48 48 60 60
Tota l Fa ce area ( sq ft)
23.13 23.13 23.13 23.13 28.92 28.92
EVAPORATOR FAN
Quantity...Size (in.)
2...15 x 11 2...15 x 11 2...15 x 11 2...15 x 11 2...15 x 11 2...15 x 11
Type Drive
Belt Belt Belt Belt Belt Belt
Nominal Cfm
7000 7000 8000 8000 10,000 10,000
Motor Bearing Type
Ball Ball Ball Ball Ball Ball
Maximum Allowable Fan Rpm
1400 1400 1400 1400 1400 1400
HIGH PRESSURE SWITCHES (psig)
Cutout
630 ± 10 630 ± 10 630 ± 10 630 ± 10 630 ± 10 630 ± 10
Reset (Auto)
505 ± 20 505 ± 20 505 ± 20 505 ± 20 505 ± 20 505 ± 20
OUTDOOR AIR INLET SCREENS
Quantity...Size (in.)
3...20 x 25 3...20 x 25 3...20 x 25 3...20 x 25 3...20 x 25 3...20 x 25
RETURN AIR FILTERS
Quantity...Size (in.)
9...16 x 25 x 2 9...16 x 25 x 2 9...16 x 25 x 2 9...16 x 25 x 2 9...20 x 25 x 2 9...20 x 25 x 2
LEGEND
TXV --- Thermostatic Expansion Valve
50PG20 ---28