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PHYSICAL DATA — 549C024-060
LEGEND
*Single phase/three phase.
UNIT SIZE 549C 024 036 048 060
NOMINAL CAPACITY (tons) 23 4 5
OPERATING WEIGHT (lb)
Unit 550 550 560 630
EconoMi$erIV 50 50 50 50
Roof Curb 115 115 115 115
COMPRESSOR Scroll
Quantity 11 1 1
Oil (oz) 80 42 42 53
REFRIGERANT TYPE R–22
Operating Charge (lb) 5.2 12.0 12.0 18.3
OUTDOOR FAN Propeller Type
Quantity...Diameter (in.) 1...22 1...22 1...22 1...22
Nominal Cfm 3000 3500 3500 3500
Motor Hp...Rpm
1
/
8
...760
1
/
8
...825
1
/
8
...825
1
/
4
...1100
OUTDOOR COIL Enhanced Copper Tubes, Aluminum Fins, Fixed Orifice Metering Device
Rows...Fins/in. 1...17 2...17 2...17 2...17
Total Face Area (sq ft) 14.58 16.53 16.53 21.25
INDOOR FAN Centrifugal Type
Quantity...Size (in.)
Std 1...10 x 10 1...10 x 10 1...10 x 10 1...10 x 10
High-Static — 1...10 x 10 1...10 x 10 1...10 x 10
Type Drive
Std Belt Belt Belt Belt
High-Static — Belt Belt Belt
Nominal Cfm 800 1200 1600 2000
Maximum Continuous Bhp
Std 0.58 1.20 1.20 1.30/2.40*
High-Static — 2.40 2.40 2.90
Motor Frame Size
Std 39 48 48 56
High-Static —565656
Nominal Rpm High/Low
Std 1620 1620 1620 1725
High-Static — 1725 1725 1725
Fan Rpm Range
Std 639-936 680-1044 770-1185 1035-1460
High-Static — 1075-1455 1075-1455 1300-1685
Motor Bearing Type Ball Ball Ball Ball
Maximum Allowable Rpm 2100 2100 2100 2100
Motor Pulley Pitch Diameter Min/Max (in.)
Std 1.9/2.9 1.9/2.9 1.9/2.9 2.4/3.4
High-Static — 2.8/3.8 2.8/3.8 3.4/4.4
Nominal Motor Shaft Diameter (in.)
Std
1
/
2
1
/
2
1
/
2
5
/
8
High-Static —
5
/
8
5
/
8
5
/
8
Fan Pulley Pitch Diameter (in.)
Std 5.2 4.5 4.0 4.5
High-Static — 4.5 4.5 4.5
Belt, Quantity...Type...Length (in.)
Std 1...A...36 1...A...34 1...A...34 1...A...39
High-Static — 1...A...39 1...A...39 1...A...40
Pulley Center Line Distance (in.)
Std 10.0-12.4 10.0-12.4 10.0-12.4 14.7-15.5
High-Static — 10.0-12.4 10.0-12.4 14.7-15.5
Speed Change per Full Turn of
Movable Pulley Flange (rpm)
Std 60 48 70 80
High-Static —65 65 60
Movable Pulley Maximum Full Turns
From Closed Position
Std 5556
High-Static —6 6 5
Factory Setting
Std 3333
High-Static —3
1
/
2
3
1
/
2
3
1
/
2
Factory Speed Setting (rpm)
Std 758 826 936 1249
High-Static — 1233 1233 1416
Fan Shaft Diameter at Pulley (in.)
5
/
8
5
/
8
5
/
8
5
/
8
INDOOR COIL Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Fixed Orifice Metering Device
Rows...Fins/in. 2...15 2...15 3...15 4...15
Total Face Area (sq ft) 5.5 5.5 5.5 7.33
HIGH–PRESSURE SWITCH (psig)
Standard Compressor Internal Relief 625
Cutout 428
Reset (Auto.) 320
LOSS OF CHARGE
(Liquid Line) (psig)
Cutout 7 ± 3
Reset (Auto.) 22 ± 5
FREEZE PROTECTION THERMOSTAT
Opens (F) 30
Closes (F) 45
OUTDOOR-AIR INLET SCREENS Cleanable
Screen quantity and size varies with option selected
RETURN–AIR FILTERS Throwaway
Quantity...Size (in.) 2...16 x 25 x 2
Bhp — Brake Horsepower
549B, 549C