Bryant 542J Series, Installation, Start-Up And Service Instructions Manual

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Table 1 — Specifications
UNIT SIZE 542J 150 180
OPERATING WT (lb)
Unit 1615 1925
Economizer 110 110
Roof Curb* 200 200
COMPRESSOR Semi-Hermetic
Type (Quantity) 060-328 (1) 060-818 (2)
No. Cylinders 6 4
Oil Charge (oz.) (Cool Circuit) 115 88
REFRIGERANT TYPE R-22
Charge (lb)
System 1 26.0 16.5
System 2 — 16.5
OUTDOOR COIL 3 ⁄
8
in., Internally-Grooved Enhanced Copper Tubes, Aluminum Lanced Fins
Rows...Fins/in. 3...15 3...15
Total Face Area (sq ft) 21.7 21.7
OUTDOOR FAN Propeller Type, Direct Drive
Nominal Cfm 9,000
Number...Diameter (in.) 3...22
Motor Hp...Rpm 1 ⁄
2
...1075
Watts Input (Total) 1090
INDOOR COIL
3
⁄
8
in., Internally-Grooved Copper Tubes, Aluminum or Copper Lanced Fins, Acutrol™ Feed Device
Expansion Device Fixed Orifice
Rows...Fins/in. 3...15 3...15
Total Face Area (sq ft) 17.5 17.5
INDOOR FAN Centrifugal Type
Quantity...Size (in.) 2...10 x 10 2...12 x 12
Type Drive Belt Belt
Nominal Cfm 5000 6000
Motor Hp 3.7 5.0
Maximum Continuous Bhp 4.25 5.90
Motor Frame Size 56H 184T
Fan Rpm Range 862-1132 799-1010
Motor Bearing Type Ball Ball
Maximum Allowable Rpm 1550 1550
Motor Pulley Pitch Diameter
Min/Max (in.)
3.1/4.1 3.7/4.7
Nomimal Motor Shaft Diameter (in.) 1
3
⁄
16
1
7
⁄
16
Fan Pulley Pitch Diameter (in.) 6.0 11.4
Belt, Quantity...Type...Length (in.) 1...BX...42 1...BX...46
Pulley Center Line Distance (in.) 13.5-15.5 13.3-14.8
Speed Change per Full Turn of
Movable Pulley Flange (rpm)
54 42
Movable Puley Maximum Full Turns
from Closed Position
6† 6†
Factory Setting 3 3
Factory Speed Setting (Rpm) 1024 926
Motor Efficiency 0.84 0.84
HIGH-PRESSURE SWITCH (psig)
Standard Compressor Internal Relief —
Cutout 426
Reset (Auto.) 320
LOW-PRESSURE SWITCH (psig)
Cutout 7
Reset (Auto.) 22
FREEZE PROTECTION THERMOSTAT (F)
Opens 30 ± 5
Closes 45 ± 5
OUTDOOR AIR INLET SCREENS Cleanable
Quantity...Size (in.)
2...20 x 25 x 1
1...20 x 20 x 1
RETURN-AIR FILTERS 10% Efficient — 2-in. Throwaway Fiberglass
Quantity... Size (in.)
4...20 x 20 x 2
4...16 x 20 x 2
DEFROST THERMOSTAT
Defrost Timer 30 Min (Adjustable to 50 or 90 Min)
Closes (F) 28
Opens (F) 65
LEGEND
Al — Aluminum
Bhp — Brake Horsepower
Cu — Copper
FIOP — Factory-Installed Option
*Weight of 14 in. roof curb.
†Cannot be set to 0 or
1
⁄
2
turns open.
NOTE: The 542J units have a low-pressure/loss-of-charge switch (stand-
ard) located on the suction side.
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