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 64
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 33
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.
—7—
To Next Page
Loading...
Need help?
General
