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Table 1 — Physical Data
BASE UNIT 50GJ
006
008
012
NOMINAL CAPACITY (tons)
5
7
1
⁄
2
10
OPERATING WEIGHT (lb)
Unit
465
755
915
With Varislide™ Economizer
499
799
959
With PARABLADE Economizer
507
817
977
Roof Curb
115
143
143
COMPRESSOR
Scroll
Quantity
1
2
2
Oil (oz) (each compressor)
50
57
57
REFRIGERANT TYPE
R-407C
Operating Charge (lb-oz)
Circuit 1
9-12
7- 6
9-1
Circuit 2
—
6-15
10-2
CONDENSER FAN
Propeller Type
Qty...Diameter (in.)
1...22
2...22
2...22
Nominal Cfm
4000
6500
7000
Motor Hp...Rpm
1
⁄
4
...1100
1
⁄
4
...1100
1
⁄
4
...1100
Watts Input (Total)
400
650
650
CONDENSER COIL
High Efficiency Enhanced Copper Tubes, Lanced Aluminum Fin
Rows...Fins/in.
2...17
2...17
2...17
Total Face Area (sq ft)
16.53
20.5
25.0
EVAPORATOR FAN
Centrifugal Type, Belt Drive
Qty...Size (in.)
1...10 x 10
1...15 x 15
1...15 x 15
Nominal Cfm
2000
3000
4000
Maximum Continuous Bhp
1.80
2.90
4.20
Motor Frame
56
56
56
Fan Rpm Range
1020-1460
840-1085
860-1080
Motor Bearing Type
Ball
Ball
Ball
Maximum Fan Rpm
2100
2100
2100
Motor Pulley Pitch Diameter A/B (in.)
2.4/3.4
3.4/4.4
4.0/5.0
Nominal Motor Shaft Diameter (in.)
7
⁄
8
7
⁄
8
7
⁄
8
Fan Pulley Pitch Diameter (in.)
4.0
7.0
8.0
Belt — Qty...Type...Length (in.)
1...A...40
1...A...51
1...A...51
Pulley Center Line Distance (in.)
14.7-15.5
16.75-19.25
15.85/17.50
Speed Change per Full Turn of
75
50
45
Movable Pulley Flange (rpm)
Movable Pulley Maximum Full Turns
6
5
5
From Closed Position
Factory Setting — Full Turns Open
3
5
5
Factory Speed Setting (rpm)
1240
840
860
Fan Shaft Diameter at Pulley (in.)
5
⁄
8
1
1
EVAPORATOR COIL
High Efficiency Enhanced Copper Tubes, Aluminum Double-Wavy Fins,
Acutrol™ Feed Device
Rows...Fins/in.
4...15
3...15
4...15
Total Face Area (sq ft)
5.5
8.9
11.1
HIGH-PRESSURE SWITCH (Internal) (psig)
450
6
5
Cutout (Discharge Line)
428
Reset (Auto.)
320
LOSS-OF-CHARGE/LOW-PRESSURE SWITCH
(Liquid Line) (psig)
Cutout
7
6
3
Reset (Auto.)
22
6
7
FREEZE-PROTECTION THERMOSTAT
Opens (F)
30
6
5
Closes (F)
45
6
5
OUTDOOR-AIR INLET SCREENS
Cleanable
Cleanable
Qty...Size (in.)
1...20 x 24 x 1
1...20 x 25 x 1
1...16 x 25 x 1
RETURN-AIR FILTERS
Throwaway
Throwaway
Qty...Size (in.)
2...16 x 25 x 2
4...16 x 20 x 2
4...20 x 20 x 2
LEGEND
Bhp — Brake Horsepower
6