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PHYSICAL DATA (cont)
549B090,120
LEGEND
BASE UNIT 549B 090 120
NOMINAL CAPACITY (tons)
7
1
/
2
10
OPERATING WEIGHT (lb)
Unit
870 1000
Durablade Economizer
44 44
EconoMi$er
62 62
Roof Curb
223 223
COMPRESSOR
Scroll
Quantity
22
Oil (oz) (each compr)
57 57
REFRIGERANT TYPE
R-22
Operating Charge (lb)
Circuit 1
9.1 10.6
Circuit 2
9.6 9.9
OUTDOOR FAN
Propeller
Quantity...Diameter (in.)
2...22 2...22
Nominal Cfm
6500 6500
Motor Hp...Rpm
1
/
4
...1100
1
/
4
...1100
OUTDOOR COIL
Enhanced Copper Tubes, Aluminum Fins, Fixed Orifice Metering Device
Rows...Fins/in.
2...17 2...17
Total Face Area (sq ft)
20.5 25.1
INDOOR FAN
Centrifugal
Size (in.)
15 x 15 15 x 15
Type Drive
Belt Belt
Nominal Cfm
3000 4000
Maximum Continuous Bhp
2.90 4.20
Motor Frame
56 56
Fan Rpm Range
725-925 860-1080
Motor Bearing Type
Ball Ball
Maximum Fan Rpm
1725 2100
Motor Pulley Pitch Diameter
A/B (in.)
3.4/4.4 4.0/5.0
Fan Pulley Pitch Diameter (in.)
8.0 8.0
Belt — Type...Length (in.)
A...51 A...51
Pulley Center Line Distance (in.)
16.75-19.25 15.85-17.50
Fan Shaft Diameter at Pulley (in.)
11
Speed Change per Full Turn of
Movable Pulley Flange (rpm)
50 45
Movable Pulley Maximum Full
Turns from Closed Position
55
Factory Setting — Full Turns Open
55
Factory Speed Setting (rpm)
725 860
INDOOR COIL
Enhanced Copper Tubes, Aluminum Double Wavy Fins, Fixed Orifice Metering Device
Rows...Fins/in.
3...15 4...15
Total Face Area (sq ft)
8.89 11.11
HIGH-PRESSURE SWITCH (psig)
Standard Compressor Internal Relief
625
Cutout
428
Reset (Auto.)
320
LOSS-OF-CHARGE/LOW-PRESSURE SWITCH
(Liquid Line) (psig)
Cutout
7 ± 3
Reset (Auto.)
22 ± 5
FREEZE PROTECTION THERMOSTAT
Opens (F)
30
Closes (F)
45
OUTDOOR-AIR INLET FILTER
Cleanable
Quantity...Size (in.)
1...20 x 25 x 1
1...16 x 25 x 1
RETURN-AIR FILTERS
Throwaway
Quantity...Size (in.)
4...16 x 20 x 2 4...20 x 20 x 2
Bhp —
Brake Horsepower
50TFQ004-012
549B036-120