Table1 -- Physical Data
UNIT 50HJ
UNIT VOLTAGE
NOMINAL CAPACITY (tons)
OPERATING WEIGHT (Ib)
Unit
AI/AI*
AI/Cu*
Cu/Cu*
Economizer
Roof Curbt
MoistureMi$er TM Dehumidification Package
COMPRESSOR
Quantity,.,Model (Ckt 1, Ckt 2)
Number of Refrigerant Circuits
Crankcase Heater Watts
Loading (% of Full Capacity)
Oil (oz) (Ckt t, Ckt 2)
REFRIGERANT TYPE
Expansion Device
Operating Charge (Ib)**
Circuit 1
Circuit 2
575 208/230
1575 1650
1725 1800
1855 1930
90 90
200 200
40 40
2-.ZR72KC 1-.ZR94KC, 1-.ZR72KC
2 2
70 70
0,53, 100 O,60, 100
60, 60 85, 60
R-22
TXV
20.7 I 19.5
13.4 13.45
015
208/230 1460 I
12
017
146o1575
15
CONDENSER COIL Cross-Hatched a/s-in. Copper Tubes, Aluminum Lanced, Aluminum Pre-Coated, or
Copper Plate Fins
Rows,..Fins/in, 4...15 I 4_.15
Total Face Area (sq ft) 21.7 I 21.7
CONDENSER FAN Propeller Type
Nominal Cfm 10,500 I 10,500
Quantity,.,Diameter (in,) 3...22 I 3_.22
Motor Hp..,Rpm 1/2._1050 V2-.1050
Watts Input (Total) 1100 1100
Cross-Hatched 3/8-in. Copper Tubes, Aluminum Lanced or Copper Plate Fins, Face
Split
4...15 I 4...15
17.5 17.5
Centrifugal Type
EVAPORATOR COIL
Rows,..Finslin,
Total Face Area (sq ft)
EVAPORATOR FAN
Quantity,.,Size (in,)
Type Drive
Nominal Cfm
Std Motor Hp
Opt Motor Hp
Motor Nominal Rpm
Std Maximum Continuous Bhp
Opt Maximum Continuous Bhp
Motor Frame Size
Fan Rpm Range
Motor Bearing Type
Maximum Allowable Rpm
Motor Pulley Pitch Dia.
Nominal Motor Shaft Diameter (in.)
Fan Pulley Pitch Diameter (in.)
Low-Medium Static
High Static
Low-Medium Static
High Static
Low=Medium Static
High Static
Low-Medium Static
High Static
Low-Medium Static
High Static
Nominal Fan Shaft Diameter (in.)
Belt, Quantity,..Type...Length (in.)
Pulley Center Line Distance (in,)
Speed Change per Full Turn of Movable
Pulley Flange (Rpm)
Movable Pulley Maximum Full Turns
From Closed Position
Factory Speed
Factory Speed Setting (Rpm)
2.9
3.7
3.13
4.26
895-1147
1040-1315
2.-12 x 12
Belt
5200
I
1725
I
56H
I
Ball
1,550
3.1/4.1
3.7/4.7
7&
6.0
6.0
13/16
1-.BX.-45
1-.BX.-45
14.5-16.0
45
45
6
3.5
987
1155
3.0
N/A
3.38
N/A
895-1147
N/A
3.1/4.1
N/A
7/8
6.0
6.0
13/16
1.-BX-.45
1.-BX-.45
14.5-16.0
45
N/A
6
3.5
1177
N/A
Low=Medium Static
High Static
HIGH-PRESSURE SWITCH (psig)
Cutout 426
Reset (Auto.) 320
LOW-PRESSURE SWITCH (psig)
Cutout 27
Reset (Auto.) 44
FREEZE PROTECTION THERMOSTAT (F)
Opens 30 _+5
Closes 45 _+5
OUTDOOR-AIR INLET SCREENS Cleanable
Quantity..,Size (in,) 2...20 x 25 x 1
1._20x20x 1
RETURN-AIR FILTERS Throwaway
Quantity,.,Size (in,) 4...20 x 20 x 2
4._16x20x2
LEGEND
AI -- Aluminum
Bhp -- Brake Horsepower
Cu -- Copper
TXV -- Thermostatic Expansion Valve
2._12 x 12
Belt
6000
5
1745
6.13
N/A
184T
873-1021
1025-1200
Ball
1,550
4,9/5.9
4,9/5.9
1V8
9.4
8.0
17/16
1.-BX...50
1.-BX...48
13.3-14.8
37
44
4it
3.5
965
1134
*Evaporator coil fin material/condenser coil fin material.
tWeight of 14-in. roof curb.
**Circuit 1 uses the lower portion of condenser coil and lower portion of evap-
orator coils, and Circuit 2 uses the upper portion of both coils.
ttDue to belt and pulley style, pulley cannot be set from 0 to 11/2 turns open.
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