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Table 1 — Physical Data
BASE UNIT 50LJ
008
009
012
014
NOMINAL CAPACITY (tons)
7V2
8V2
10
I2V2
OPERATING WEIGHT (lb)
Unit
755
760
915
930
With Economizer
799
804
959
974
Roof Curb
143
143
143
143
COMPRESSOR
Hermetic
Quantity
2
2
2
2
Oil (oz) (each compressor)
55
55
70
70
REFRIGERANT TYPE
R-22
Operating Charge (Ib-oz)
Circuit 1
7- 0
7-0
9-7
8- 3
Circuit 2
5-12
6-2
8-6
8-11
CONDENSER FAN
Propeller
Qty...Diameter (in.)
1 ..26
1...26
1 . 26
1...26
Nominal Cfm
6500
6500
7000
7200
Motor Hp...Rpm
1
%..1100
3/4...1100
3/4.. 1100
3/4...IIOO
CONDENSER COIL
Enhanced Copper Tubes, Aluminum Lanced Fir 1
Rows...Fins/in.
2.17
2. 17
2...17
2.. 17
Total Face Area (sq ft)
18.0
20 5
25.0
25.0
EVAPORATOR FAN
Centrifugal
Size (in.)
15
X
15
15x15
1
15
X
15
15x 15
Type Drive
Belt
Belt
Belt
Beit
Nominal Cfm
3000
3400
4000
5000
Maximum Continuous Bhp
2.4
2.4
2.4
42
Motor Frame
56
56
56
56
Fan Rpm Range
590-840
590-840
690-935
860-1080
Motor Bearing Type
Ball
Ball
Ball
Ball
Maximum Fan Rpm
2100
2100
2100
2100
Motor Pulley Pitch Diameter A/B (in.)
2.4/3 4
2 4/3.4
2.8/3.8
4.0/5 0
Fan Pulley Pitch Diameter (in.)
7.0
70
70
8.0
Belt — Type...Length (in.)
A...48
A .48
A...51
A...57
Pulley Center Line Distance (in.)
16.75-19.25
16 75-19.25
18.25-20 75
18.25-20 75
Speed Change per Full Turn of
50
50
50
44
Movable Pulley Flange (rpm)
Movable Pulley Maximum Full Turns
5
5
5
5
From Closed Position
Factory Setting — Full Turns Open
5
5
5
5
Factory Speed Setting (rpm)
590
590
690
860
Fan Shaft Diameter at Pulley (in.)
1
1
1
1
EVAPORATOR COIL
1
Enhanced Copper Tubes, Aluminum Double-Wavy Fin
Rows...Fins/in.
3. 15
3. .15
3 .15
I
4...15
Total Face Area (sq ft)
80
80
100
1
11.1
OUTDOOR-AIR INLET SCREENS
Cleanable
1
20
X
25
X
1
Qty...Size (in.)
1.. 16
X
25
X
1
RETURN-AIR FILTERS
Disposable
Qty...Size (in.)
4 ..16
X
20
X
2
1
4...16x20x2
1
4 20
X
20
X
2
1
4 20
X
20
X
2
LEGEND
Bhp —
Brake Horsepower
5
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