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PHYSICAL DATA
548F090-120
LEGEND
Bhp — Brake Horsepower
*Weight of 14-in. roof curb.
UNIT SIZE 548F 090 120
NOMINAL CAPACITY (tons) 7
1
/
2
10
OPERATING WEIGHT (lb)
Unit 940 1015
Economizer
EconoMi$erIV or EconoMi$er2 75 75
Roof Curb* 143 143
COMPRESSOR (Hermetic) Reciprocating Scroll
Quantity 22
Oil (oz) 45 ea 54 ea
REFRIGERANT TYPE R-22
Operating Charge (lb-oz)
Circuit 1 5-14 7-14
Circuit 2 5-13 8- 3
OUTDOOR COIL
3
/
8
-in. OD Enhanced Copper Tubes, Aluminum Lanced Fins,
Fixed Orifice Metering Device
Rows...Fins/in. 1...17 2...17
Total Face Area (sq ft) 20.50 18.30
OUTDOOR FAN Propeller Type
Nominal Cfm 6500 6500
Quantity...Diameter (in.) 2...22 2...22
Motor Hp...Rpm
1
/
4
...1100
1
/
4
...1100
Watts Input (Total) 500 500
INDOOR COIL
3
/
8
-in. OD Enhanced Copper Tubes, Aluminum Double-Wavy Fins,
Fixed Orifice Metering Device
Rows...Fins/in. 3...15 3...15
Total Face Area (sq ft) 8.0 11.1
INDOOR FAN Centrifugal Type
Quantity...Size (in.) Std 1...15 x 15 1...15 x 15
Alt 1...15 x 15 1...15 x 15
High-Static 1...15 x 15 1...15 x 15
Type Drive Std Belt Belt
Alt Belt Belt
High-Static Belt Belt
Nominal Cfm 3000 4000
Maximum Continuous Bhp Std 2.40 2.40
Alt 2.40 2.90
High-Static 3.70 5.25
Motor Frame Size Std 56 56
Alt 56 56
High-Static 56 56
Nominal Rpm Std ——
Alt ——
High-Static 1725 1725
Fan Rpm Range Std 590- 840 685- 935
Alt 685- 935 835-1085
High-Static 860-1080 830-1130
Motor Bearing Type Ball Ball
Maximum Allowable Rpm 2100 2100
Motor Pulley Pitch Diameter Min/Max (in.) Std 2.4/3.4 2.8/3.8
Alt 2.8/3.8 3.4/4.4
High-Static 4.0/5.0 2.8/3.8
Nominal Motor Shaft Diameter (in.) Std
5
/
8
5
/
8
Alt
5
/
8
7
/
8
High-Static
7
/
8
7
/
8
Fan Pulley Pitch Diameter (in.) Std 7.0 7.0
Alt 7.0 7.0
High-Static 8.0 5.8
Belt, Quantity...Type...Length (in.) Std 1...A...53 1...A...49
Alt 1...A...49 1...A...51
High-Static 1...A...65 1...BX...48
Pulley Center Line Distance (in.) Std 16.75-19.25 15.85-17.50
Alt 16.75-19.25 15.85-17.50
High-Static 16.75-19.25 15.85-17.50
Speed Change per Full Turn of
Moveable Pulley Flange (rpm)
Std 50 50
Alt 50 50
High-Static 60 60
Moveable Pulley Maximum Full Turns
From Closed Position
Std 55
Alt 55
High-Static 56
Factory Setting Std 55
Alt 55
High-Static 55
Factory Speed Setting (rpm) Std 590 685
Alt 685 835
High-Static 860 887
Fan Shaft Diameter at Pulley (in.) 11
HIGH-PRESSURE SWITCH (psig)
Standard Compressor Internal Relief (Differential) 450 ± 50
Cutout 428
Reset (Auto.) 320
LOSS-OF-CHARGE (LOW-PRESSURE) SWITCH (psig)
Cutout 7 ± 3
Reset (Auto.) 22 ± 5
FREEZE PROTECTION THERMOSTAT (F)
Opens 30 ± 5
Closes 45 ± 5
OUTDOOR-AIR INLET SCREENS Cleanable.
Screen quantity and size vary based on options selected.
RETURN-AIR FILTERS Throwaway
Quantity...Size (in.) 4...16 x 20 x 2 4...20 x 20 x 2
548F