6
Table 1—Physical Data
UNIT 50PG
20
24
28
VOLTAGE
208/230 and
460
575
208/230 and
460
575
208/230 and
460
575
NOMINAL CAPACITY (Tons)
18
20
25
OPERATING WEIGHT (lb)
50 Series (Low 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
Total Charge
50.6
50.6
59.3
59.3
73.6
73.6
OPERATING CHARGE (lb)
— Unit with
Humidi---MiZer
™
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
Total 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
Total Face 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-MIZER
t
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
Total Face 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
Total Face 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
50P
G
20
---
28
