5
Table 1 – Physical Data
BASE UNIT 50PG
08
09
12
14
NOMINAL CAPACITY (Tons)
7.5
8.5
10
12.5
OPERATING WEIGHT (lb)
Unit*
1098
1105
1199
1310
Economizer
Vertical
57
57
57
57
Horizontal
59
59
59
59
Humidi-MiZer
™
Adaptive Dehumidification System
45
45
44
45
Roof Curb
14-in.
180
180
180
180
24-in.
268
268
268
268
COMPRESSOR
Fully Hermetic Scroll
Quantity
2
2
2
2
Oil Type Sys A
Copeland 3MA
Copeland 3MA
Copeland 3MA
Copeland 3MA
Sys B
Copeland 3MA
Copeland 3MA
Copeland 3MA
Copeland 3MA
Number of Refrigerant Circuits
2
2
2
2
Oil (oz) Sys A
42
42
66
56
Sys B
42
42
66
56
REFRIGERANT TYPE
R-410A (Puron
®
Refrigerant)
Expansion Device
TXV
TXV
TXV
TXV
Operating Charge (lb)
Sys A
11.8
11.3
13.7
17.2
Sys B
11.8
11.3
13.7
17.2
Operating Charge Total All Systems (lb)
23.5
22.6
27.4
34.4
Unit with Humidi-MiZer Adaptive Dehumidification System
Operating Charge (lb)
Sys A
16.5
16.25
17.7
22.5
Sys B
16.7
16.25
18.2
21.8
Total All Systems (lb)
33.2
32.5
35.9
44.3
CONDENSER COIL
Enhanced Copper Tubes, Aluminum Lanced Fins, Face Split
Condenser A (Outer)
Rows...Fins/in.
2
…
17
2
…
17
2
…
17
3
…
17
Face Area (sq ft)
17.4
17.4
17.4
17.4
Condenser B (Inner)
Rows...Fins/in.
2...17
2...17
2...17
3...17
Face Area (sq ft)
17.4
17.4
17.4
17.4
Humidi-MiZer Coil
Enhanced Copper Tubes, Aluminum Lanced Fins
Rows...Fins/in.
1...17
1...17
1...17
1...17
Face Area (sq ft)
14.9
14.9
14.9
14.9
CONDENSER FAN
Propeller
Quantity
…
Diameter (in.)
2...24
2...24
2...24
2...24
Nominal Cfm (Total, all fans)
7204
7204
8341
7300
Motor Hp
1
/
4
1
/
4
1
/
3
1
/
3
Nominal Rpm — High Speed
1100
1100
1100
1100
Nominal Rpm — Low Speed
900
900
900
900
EVAPORATOR COIL
Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Face Split
Rows
…
Fins/in.
3
…
15
3
…
15
4
…
15
4
…
15
Face Area (sq ft)
14.9
14.9
14.9
14.9
EVAPORATOR FAN
Centrifugal Type, Belt Drive
Quantity
…
Size (in.)
Low
1...15 x 15
1...15 x 15
1...15 x 15
1...15 x 15
High
1...15 x 15
1...15 x 15
1...15 x 15
1...15 x 15
Type Drive
Low
Belt
Belt
Belt
Belt
High
Belt
Belt
Belt
Belt
Nominal Cfm
3000
3400
4000
5000
Maximum Continuous Bhp
Low
2.40
2.40
3.10
3.70
High
3.10
3.70
3.70
5.25
Motor Nominal Rpm
1725
1725
1725
1725
Motor Frame Size
Low
56Y
56Y
56Y
56Y
High
56Y
56Y
56Y
56Y
Fan Rpm Range
Low
568-771
568-771
690-893
690-893
High
812-1015
812-1015
852-1055
852-1055
Motor Bearing Type
Ball
Ball
Ball
Ball
Maximum Fan Rpm
1600
1600
1600
1600
Motor Pulley Pitch Diameter Range (in.)
Low
2.8-3.8
2.8-3.8
3.4-4.4
3.4-4.4
High
4.0-5.0
4.0-5.0
4.6-5.6
4.6-5.6
Fan Pulley Pitch Diameter
Low
8.5
8.5
8.5
8.5
High
8.5
8.5
8.5
8.5
Nominal Motor Shaft Diameter (in.)
Low
5
/
8
5
/
8
7
/
8
7
/
8
High
7
/
8
7
/
8
7
/
8
7
/
8
Belt
…
Pitch Length (in.)
Low
63.3
63.3
63.3
63.3
High
65.3
65.3
65.3
65.3
Belt
…
Type
Low
AX
AX
AX
AX
High
AX
AX
AX
AX
Pulley Center Line Distance Min. (in.)
Low
21.0
21.0
21.0
21.0
High
21.0
21.0
21.0
21.0
Pulley Center Line Distance Max. (in.)
Low
23.4
23.4
23.4
23.4
High
23.4
23.4
23.4
23.4
Speed Change per Full Turn of
Movable Pulley Flange (rpm)
Low
41
41
41
41
High
41
41
41
41
Movable Pulley Maximum Full
Turns from Closed Position
Low
5
5
5
5
High
5
5
5
5
Factory Pulley Setting (rpm)
Low
568
568
690
690
High
812
812
852
852
Fan Shaft Diameter at Pulley (in.)
1
1
1
1
HIGH-PRESSURE SWITCH (psig)
Cutout
660
±
10
660
±
10
660
±
10
660
±
10
Reset (Auto.)
505
±
20
505
±
20
505
±
20
505
±
20
RETURN-AIR FILTERS
Throwaway Type
Quantity
…
Size (in.)
4...20 x 25 x 2
4...20 x 25 x 2
4...20 x 25 x 2
4...20 x 25 x 2
LEGEND
TXV --- Thermostatic Expansion Valve
* Aluminum evaporator/aluminum condenser coil fin material
50PG08
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