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PHYSICAL DATA (cont)
LEGEND
*Weight of 14-in. roof curb.
†Rollout switch lockout is manually reset by interrupting power to unit or
resetting thermostat.
NOTE:
High-static motor not available on size 150 units.
UNIT SIZE 581B 090 102 120 150
NOMINAL CAPACITY (tons)
7
1
/
2
8
1
/
2
10 12
1
/
2
OPERATING WEIGHT (lb)
Unit
870 880 1035 1050
With Durablade Economizer
914 924 1079 1094
With EconoMi$er
932 942 1097 1112
With Perfect Humidity™ Dehumidification Package
899 909 1068 1083
Roof Curb*
143 143 143 143
COMPRESSOR
Scroll
Quantity
22 22
Oil (oz) (each compressor)
53 53 50 60
REFRIGERANT TYPE
R-22
Operating Charge (lb-oz)
Standard Unit
Circuit 1
7-10 7-14 9-10 9-8
Circuit 2
8- 2 8- 5 10-10 9-5
Unit With Perfect Humidity Dehumidification
Package
Circuit 1
10-10 10-11 13- 0 12-6
Circuit 2
12- 8 10-10 13- 5 12-2
CONDENSER FAN
Propeller
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
Enhanced Copper Tubes, Aluminum Lanced 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 Perfect Humidity 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
Size (in.)
15 x 15 15 x 15 15 x 15 15 x 15
Type Drive
Belt Belt Belt Belt
Nominal Cfm
3000 3400 4000 5000
Maximum Continuous Bhp Std
2.90 2.90 3.70 5.25
Hi-Static
4.20 4.20 5.25 —
Motor Frame
56 56 56 56
Fan Rpm Range Std
840-1085 840-1085 860-1080 900-1260
Hi-Static
860-1080 860-1080 830-1130 —
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
Hi-Static
4.0/5.0 4.0/5.0 2.8/3.8 —
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
Hi-Static
8.0 8.0 5.8 —
Belt — Type...Length (in.) Std
A...51 A...51 A...51 BX...46
Hi-Static
A...55 A...55 BX...46 —
Pulley Center Line Distance (in.)
16.75-19.25 16.75-19.25 15.85-17.50 15.85-17.50
Speed Change per Full Turn of
Movable Pulley Flange (rpm)
Std
50 50 45 60
Hi-Static
60 60 60 —
Movable Pulley Maximum Full
Turns from Closed Position
Std
55 56
Hi-Static
55 6—
Factory Setting — Full Turns Open Std
55 55
Hi-Static
55 5—
Factory Speed Setting (rpm) Std
840 840 860 960
Hi-Static
860 860 890 —
Fan Shaft Diameter at Pulley (in.)
11 11
EVAPORATOR COIL
Enhanced Copper Tubes, Aluminum Double-Wavy Fins
Rows...Fins/in.
3...15 3...15 4...15 4...15
Total Face Area (sq ft)
8.9 8.9 11.1 11.1
Bhp —
Brake Horsepower