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Table 1 — Specifications
BASE UNIT 558D 036 048 060 072
NOMINAL CAPACITY (tons) 3456
OPERATING WEIGHT (lb)
Unit 365 375 395 470
Durablade Economizer 34 34 34 34
PARABLADE Economizer 42 42 42 42
Roof Curb 115 115 115 115
COMPRESSOR TYPE Reciprocating Reciprocating Reciprocating Scroll
Quantity 1111
Oil (oz) 50 50 50 54
REFRIGERANT TYPE R-22
Operating Charge (lb-oz) 3-6 5-8 7-0 7-11
CONDENSER COIL Enhanced Copper Tubes, Aluminum Lanced Fins
Rows...Fins/in. 1...17 1...17 2...17 2...17
Total Face Area (sq ft) 7.36 13.19 10.42 10.42
CONDENSER FAN Propeller Type
Nominal Cfm 3500 4000 4000 4000
Quantity...Diameter (in.) 1...22.0 1...22.0 1...22.0 1...22.0
Motor Hp...Rpm
1
⁄
4
...1100
1
⁄
4
...1100
1
⁄
4
...1100
1
⁄
4
...1100
Watts Input (Total) 325 325 325 325
EVAPORATOR COIL Enhanced Copper Tubes, Aluminum Double-Wavy Fins
Rows...Fins/in. 2...15 2...15 3...15 4...15
Total Face Area (sq ft) 4.17 5.5 5.5 5.5
EVAPORATOR FAN Centrifugal Type
Quantity...Size (in.) Std 1...10 x 10 1...10 x 10 1...11 x 10 1...10 x 10
Alt 1...10 x 10 1...10 x 10 1...10 x 10 —
Type Drive Std Direct Direct Direct Belt
Alt Belt Belt Belt —
Nominal Cfm Std 1200 1600 2000 2400
Alt 1200 1600 2000 —
Maximum Continuous Bhp Std .34 .75 1.20 2.40
Alt 1.00 1.00 1.3/2.4* —
Motor Frame Size Std 48 48 48 56
Alt 48 48 48/56* —
Nominal Rpm High/Low Std 860/800 1075/970 1075/970 —
Alt ————
Fan Rpm Range Std — — — 1070-1460
Alt 760-1090 840-1185 900-1300 —
Motor Bearing Type Ball Ball Ball Ball
Maximum Allowable Rpm 2100 2100 2100 2100
Motor Pulley Pitch Diameter Min/Max (in.) Std — — — 2.8/3.8
Alt 1.9/2.9 1.9/2.9 2.4/3.4 —
Nominal Motor Shaft Diameter (in.) Std
1
⁄
2
1
⁄
2
1
⁄
2
5
⁄
8
Alt
1
⁄
2
1
⁄
2
5
⁄
8
—
Fan Pulley Pitch Diameter (in.) Std ———4.5
Alt 4.5 4.0 4.5 —
Belt, Quantity...Type...Length (in.) Std — — — 1...A...40
Alt 1...A...39 1...A...36 1...A...39 —
Pulley Center Line Distance (in.) Std — — — 14.7-15.5
Alt 10.0-12.4 10.0-12.4 14.7-15.5 —
Speed Change per Full Turn of Std ———80
Movable Pulley Flange (rpm) Alt 65 70 80 —
Movable Pulley Maximum Full Turns Std ———5
From Closed Position Alt 555—
Factory Setting Std ———3
Alt 333—
Factory Speed Setting (rpm) Std — — — 1225
Alt 890 980 1060 —
Fan Shaft Diameter at Pulley (in.)
5
⁄
8
5
⁄
8
5
⁄
8
5
⁄
8
HIGH-PRESSURE SWITCH (psig)†
Standard Compressor Internal Relief (Differential) 450±50 500±50
Cutout 428 428
Reset (Auto.) 320 320
LOW-PRESSURE/LOSS-OF-CHARGE SWITCH (Liquid Line)(psig)†
Cutout 7±3
Reset (Auto.) 22±7
FREEZE-PROTECTION THERMOSTAT (F)†
Opens 30±5
Closes 45±5
OUTDOOR-AIR INLET SCREENS Cleanable
Quantity...Size (in.) 1...20 x 24 x 1
RETURN-AIR FILTERS Throwaway
Quantity...Size (in.) 2...16 x 25 x 2
LEGEND
Bhp — Brake Horsepower
*Single phase units — 1.3 bhp/48 frame.
Three phase units — 2.4 bhp/56 frame.
†Requires an optional or accessory controls upgrade kit.
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