11 physical data (cont) – Bryant COMMERCIAL SINGLE PACKAGE ROOFTOP GAS HEAT/ELECTRIC COOLING 581B User Manual
Page 11
11
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
2
2
2
2
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
5
5
5
6
Hi-Static
5
5
6
—
Factory Setting — Full Turns Open
Std
5
5
5
5
Hi-Static
5
5
5
—
Factory Speed Setting (rpm)
Std
840
840
860
960
Hi-Static
860
860
890
—
Fan Shaft Diameter at Pulley (in.)
1
1
1
1
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