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 2222
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.) 15x15 15x15 15x15 15x15
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 5556
Alt ——— 5
Factory Setting — Full Turns Open 5555
Factory Speed Setting (rpm)
Std 840 840 860 960
Alt ———860
Fan Shaft Diameter at Pulley (in.) 1111
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
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