Specifications – Bryant 581A User Manual
Page 9
SPECIFICATIONS
UNIT SIZE
155
180
240
NOMINAL CAPACITY (tons)
13
15
20
OPERATING WEIGHT (lb)
Unit
Al/Al*
1640/1660†
2010
2235/2413†
Al/Cu*
1770/1790†
2160
2385/2563†
Cu/Cu*
1840/1860†
2250
2515/2693†
Economizer
110
110
110
Roof Curb**
200
200
200/213
COMPRESSOR
Semi-Hermetic
Quantity
1
2
2
Cylinders
6
4
6
REFRIGERANT TYPE
R-22
Quantity (lb)
System 1
22.50
14.25
17.50
System 2
—
15.00
17.00
CONDENSER COIL
Enhanced Copper Tubes, Aluminum Lanced Fins
Rows...Fins/in.
3...15
4...15
4...15
Total Face Area (sq ft)
22.2
22.2
22.2
CONDENSER FAN
Propeller Type
Nominal Cfm
10,500
14,200
Quantity...Diameter (in.)
3...22
2...30
Motor Hp...Rpm
1
⁄
2
...1075
1...1075
Watts Input (Total)
1090
3550
EVAPORATOR COIL
Copper Tubes, Aluminum or Copper Plate Fins
Rows...Fins/in.
2...17
3...15
4...15
Total Face Area (sq ft)
17.9
17.9
17.9
EVAPORATOR FAN
Centrifugal Type
Quantity...Size (in.)
2...10 x 10
2...12 x 12
2...12 x 12
Type Drive
Belt
Belt
Belt
Nominal Cfm
5000
6000
8000
Motor Hp
3.7
5
10
Maximum Continuous Bhp
4.25
5.90
10.2 [208/230 v]
11.8 [460 v]
Motor Frame Size
56H
184T
215T
Fan Rpm Range
1194-1526
1238-1494
1323-1579
Motor Bearing Type
Ball
Ball
Ball
Maximum Allowable Rpm
1550
1550
1550
Motor Pulley Pitch Diameter Min/Max (in.)
3.4/4.4
5.4/6.6
5.8/7.0
Nominal Motor Shaft Diameter (in.)
7
⁄
8
1
1
⁄
8
1
3
⁄
8
Fan Pulley Pitch Diameter (in.)
5.2
7.9
7.9
Nominal Fan Shaft Diameter (in.)
1
3
⁄
16
1
7
⁄
16
1
7
⁄
16
Belt, Quantity...Type...Length (in.)
1...AX...42
1...BX...50
1...BX...51
Pulley Center Line Distance (in.)
13.5-15.5
13.3-14.8
14.6-15.4
Speed Change per Full Turn of
Movable Pulley Flange (rpm)
66
34
43
Movable Pulley Maximum Full Turns
From Closed Position
5
6
6
Factory Setting
3.5
3
3
Factory Speed Setting (rpm)
1293
1366
1451
Fan Shaft Diameter at Pulley (in.)
1
3
⁄
16
1
7
⁄
16
1
7
⁄
16
(Table continued on next page.)
LEGEND
Al
— Aluminum
Bhp — Brake Horsepower
Cu
— Copper
*Evaporator coil fin material/condenser coil fin material.
†Low-heat weight/high-heat weight.
**Weight of 14-in. roof curb.
††Rollout switch is manual reset.
NOTE: The 581A units have a low-pressure switch (standard) located
on the suction side.
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