Bryant 549B User Manual
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140
PHYSICAL DATA — 542J150,180
LEGEND
*Weight of 14 in. roof curb.
UNIT SIZE 542J
150
180
203/230 V, 460 V
575 V
NOMINAL CAPACITY (tons)
12.5
15
OPERATING WT (lb)
Unit
1615
1925
EconoMi$erIV
90
90
EconoMi$er2
85
85
Roof Curb*
200
200
COMPRESSOR
Semi-Hermetic
Model Number (Quantity)
06D-328 (1)
06D-818 (2)
Cylinders
6
4
Capacity Staging (%)
0,66,100
0,50,100
Oil Change (oz)
115
88 (each)
REFRIGERANT TYPE
R-22
Charge (lb)
System 1
26.0
16.5
System 2
—
16.5
OUTDOOR COIL
3
/
8
in. Enhanced Copper Tubes, Aluminum Lanced or Copper Plate Fins
Rows
3
3
Fins/in.
15
15
Total Face Area (sq ft)
21.7
21.7
OUTDOOR FAN
Propeller Type, Direct Drive
Nominal Cfm
9,000
9,000
Number...Diameter (in.)
3...22
3...22
Motor Hp (1075 Rpm)
1/
2
1/
2
Watts Input (Total)
1090
1090
INDOOR COIL
3
/
8
-in. Enhanced Copper Tubes, Aluminum Double Wavy or Copper Plate Fins, Face Split
Rows
3
3
Fins/in.
15
15
Total Face Area (sq ft)
17.5
17.5
INDOOR FAN
Centrifugal, Adjustable Pitch Belt Drive
Quantity...Size (in.)
2...10 x 10
2...10 x 10
2...12 x 12
Nominal Cfm
5000
5000
6000
Maximum Continuous Bhp
4.25
3.45
5.90
Fan Rpm Range
STD
891-1179
1159-1429
817-1038
ALT
1227-1559
—
1082-1303
Motor Nominal Rpm
1725
1550
1745
Maximum Allowable Rpm
1550
—
1550
Motor Pulley Pitch Diameter (in.)
STD
3.1-4.1
4.3-5.3
3.7-4.7
ALT
3.7-4.7
—
4.9-5.9
Fan Pulley Pitch Diameter (in.)
STD
6.0
6.4
7.9
ALT
5.2
—
7.9
Belt, Quantity...Type...Length (in.)
STD
1...BX...42
1...BX...45
1...BX...46
ALT
1...BX...42
—
1...BX...50
Pulley Center Line Distance (in.)
13.5-15.5
13.5-15.5
13.3-14.8
Factory Setting
3.5
3.5
3.5
Factory Speed Setting
STD
1035
1296
934
ALT
1389
—
1199
Motor Hp (Service Factor)
3.7 (1.15)
3.0 (1.15)
5 (1.15)
Motor Frame Size
56H
56H
184T
Motor Efficiency
0.86
0.82
0.875
HIGH-PRESSURE SWITCH
Cutout (psig)
426
Reset (psig)
320
LOW-PRESSURE/LOSS-OF-CHARGE SWITCH
Cutout (psig)
7
Reset (psig)
22
FREEZE PROTECTION THERMOSTAT (F)
Opens
30 ± 5
Closes
45 ± 5
OUTDOOR AIR INLET SCREENS
Cleanable
Economizer, Quantity...Size (in.)
2...20 x 25 x 1
1...20 x 20 x 1
RETURN-AIR FILTERS (Type)
10% Efficient — 2-in. Throwaway Fiberglass
Quantity...Size (in.)
4...20 x 20 x 2
4..16 x 20 x 2
POWER EXHAUST
1
/
2
Hp 208/230 or 460 V Motor, Direct Drive Propeller Fan (Factory Wired for 460 V)
Al — Aluminum
Cu — Copper
5
42J