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Table 1 — Physical Data
UNIT 50HJ
008
009
012
014
NOMINAL CAPACITY (tons)
7
1
⁄
2
8
1
⁄
2
10
12
1
⁄
2
OPERATING WEIGHT (lb)
Unit
755
760
915
930
With Durablade Economizer
799
804
959
974
With Parablade Economizer
817
822
977
992
With MoistureMiser Dehumidification Package
784
789
948
963
Roof Curb
143
143
143
143
COMPRESSOR
Scroll
Quantity
2
2
2
2
Oil (oz) (each compressor)
53
53
50
60
REFRIGERANT TYPE
R-22
Operating Charge (lb-oz)
Standard Unit
Circuit 1
7-10
7-14
9-6
9-8
Circuit 2
8- 2
8- 5
10-6
9-5
Unit With MoistureMiser Dehumidification Package
Circuit 1
10-10
10-11
13-0
12-6
Circuit 2
12- 8
10-10
13-2
12-2
CONDENSER FAN
Propeller Type
Quantity...Diameter (in.)
2...22
2...22
2...22
2...22
Nominal Cfm
6500
6500
7000
7000
Motor Hp...Rpm
1
⁄
4
...1100
1
⁄
4
...1100
1
⁄
4
...1100
1
⁄
4
...1100
Watts Input (Total)
650
650
650
650
CONDENSER COIL
High-Efficiency Enhanced Copper Tubes, Lanced Aluminum Fins
Standard Unit
Rows...Fins/in.
2...17
2...17
2...17
2...17
Total Face Area (sq ft)
20.5
20.5
25.0
25.0
Unit with MoistureMiser Dehumidification Package
Rows...Fins/in.
1...17
1...17
1...17
1...17
Total Face Area (sq ft)
6.3
6.3
8.4
8.4
EVAPORATOR FAN
Centrifugal Type, Belt Drive
Size (in.)
15 x 15
15 x 15
15 x 15
15 x 15
Nominal Cfm
Std
3000
3400
4000
5000
Alt
—
—
—
4000
Maximum Continuous Bhp
Std
2.90
2.90
4.20
5.25
Alt
—
—
—
4.20
Motor Frame
56
56
56
56
Fan Rpm Range
Std
840-1085
840-1085
860-1080
900-1260
Alt
—
—
—
860-1080
Motor Bearing Type
Ball
Ball
Ball
Ball
Maximum Fan Rpm
2100
2100
2100
2100
Motor Pulley Pitch Diameter A/B (in.)
Std
3.4/4.4
3.4/4.4
4.0/5.0
2.8/3.8
Alt
—
—
—
4.0/5.0
Nominal Motor Shaft Diameter (in.)
7
⁄
8
7
⁄
8
7
⁄
8
7
⁄
8
Fan Pulley Pitch Diameter (in.)
Std
7.0
7.0
8.0
5.8
Alt
—
—
—
8.0
Belt — Quantity...Type...Length (in.)
Std
1...A...51
1...A...51
1...A...51
1...BX...46
Alt
—
—
—
1...A...51
Pulley Center Line Distance (in.)
Std
16.75-19.25
16.75-19.25
15.85-17.50
15.85-17.50
Alt
—
—
—
15.85-17.50
Speed Change per Full Turn of
Movable Pulley Flange (rpm)
Std
50
50
45
60
Alt
—
—
—
45
Movable Pulley Maximum Full Turns
From Closed Position
Std
5
5
5
6
Alt
—
—
—
5
Factory Setting — Full Turns Open
5
5
5
5
Factory Speed Setting (rpm)
Std
840
840
860
960
Alt
—
—
—
860
Fan Shaft Diameter at Pulley (in.)
1
1
1
1
EVAPORATOR COIL
High Efficiency Enhanced Copper Tubes, Aluminum Double-Wavy Fins,
Acutrol™ Feed Device
Rows...Fins/in.
3...15
3...15
4...15
4...15
Total Face Area (sq ft)
8.9
8.9
11.1
11.1
HIGH-PRESSURE SWITCH (psig)
Standard Compressor Internal Relief (Differential)
450 ± 50
Cutout
428
Reset (Auto.)
320
LOSS-OF-CHARGE/LOW-PRESSURE
SWITCH (Liquid Line) (psig)
Cutout
7 ± 3
Reset (Auto.)
22 ± 5
FREEZE-PROTECTION THERMOSTAT
Opens (F)
30 ± 5
Closes (F)
45 ± 5
OUTDOOR-AIR INLET SCREENS
Cleanable
Quantity...Size (in.)
1...20 x 25 x 1
1...16 x 25 x 1
RETURN-AIR FILTERS
Throwaway
Quantity...Size (in.)
4...16 x 20 x 2
4...16 x 20 x 2
4...20 x 20 x 2
4...20 x 20 x 2
LEGEND
Bhp — Brake Horsepower
5
Summary of Contents for 50HJ008-014
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