14 physical data, 548 f – Bryant 549B User Manual
Page 14
14
PHYSICAL DATA
548F036-072
LEGEND
*Weight of 14-in. roof curb.
†Single phase/three phase.
NOTE: The 548F units have a loss-of-charge switch located in the liquid line.
UNIT SIZE 548F
036
048
060
072
NOMINAL CAPACITY (tons)
3
4
5
6
OPERATING WEIGHT (lb)
Unit
500
520
550
590
Economizer
EconoMi$erIV or EconoMi$er2
50
50
50
50
Roof Curb*
115
115
115
115
COMPRESSOR
Hermetic
Quantity
1
1
1
1
Oil (oz)
45
54
50
54
REFRIGERANT TYPE
R-22
Operating Charge (lb-oz)
Circuit 1
5-1
6-0
8-0
11-2
Circuit 2
—
—
—
—
OUTDOOR COIL
3
/
8
-in. OD Enhanced Copper Tubes, Aluminum Lanced Fins, Fixed Orifice Metering Device
Rows...Fins/in.
1...17
1...17
2...17
2...17
Total Face Area (sq ft)
10.31
14.58
12.25
16.53
OUTDOOR FAN
Propeller Type
Nominal Cfm
4000
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
INDOOR COIL
3
/
8
-in. OD Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Fixed Orifice Metering Device
Rows...Fins/in.
2...15
2...15
3...15
3...15
Total Face Area (sq ft)
4.2
4.2
5.5
5.5
INDOOR 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
—
High-Static
1...10 x 10
1...10 x 10
1...10 x 10
1...10 x 10
Type Drive
Std
Direct
Direct
Direct
Belt
Alt
Belt
Belt
Belt
—
High-Static
Belt
Belt
Belt
Belt
Nominal Cfm
1200
1600
2000
2400
Maximum Continuous Bhp
Std
.34
.75
1.20
2.40
Alt
1.00
1.00
1.30/2.40†
—
High-Static
2.40
2.40
2.90
2.90
Motor Frame Size
Std
48
48
48
56
Alt
48
48
56
—
High-Static
56
56
56
56
Nominal Rpm High/Low
Std
860/800
1075/970
1075/970
—
Alt
1620
1620
1725
—
High-Static
1725
1725
1725
1725
Fan Rpm Range
Std
—
—
—
1070-1460
Alt
760-1000
770-1175
878-1192
—
High-Static
1075-1455
1075-1455
1300-1685
1300-1685
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
—
High-Static
2.8/3.8
2.8/3.8
3.4/4.4
3.4/4.4
Nominal Motor Shaft Diameter (in.)
Std
1
/
2
1
/
2
1
/
2
5
/
8
Alt
1
/
2
1
/
2
5
/
8
—
High-Static
5
/
8
5
/
8
5
/
8
5
/
8
Fan Pulley Pitch Diameter (in.)
Std
—
—
—
4.5
Alt
4.5
4.0
4.5
—
High-Static
4.5
4.5
4.5
4.5
Belt, Quantity...Type...Length (in.)
Std
—
—
—
1...A...40
Alt
1...A...34
1...A...34
1...A...39
—
High-Static
1...A...39
1...A...39
1...A...40
1...A...40
Pulley Center Line Distance (in.)
Std
—
—
—
14.7-15.5
Alt
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
14.7-15.5
Speed Change per Full Turn of
Movable Pulley Flange (rpm)
Std
—
—
—
80
Alt
48
70
80
—
High-Static
65
65
60
60
Movable Pulley Maximum Full Turns
From Closed Position
Std
—
—
—
5
Alt
5
5
6
—
High-Static
6
6
5
5
Factory Setting
Std
—
—
—
3
Alt
3
3
3
—
High-Static
3
1
/
2
3
1
/
2
3
1
/
2
3
1
/
2
Factory Speed Setting (rpm)
Std
—
—
—
1225
Alt
856
932
1035
—
High-Static
1233
1233
1416
1416
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
Cutout
428
Reset (Auto.)
320
LOSS-OF-CHARGE SWITCH (psig)
Cutout
7 ± 3
Reset (Auto.)
22 ± 7
FREEZE-PROTECTION THERMOSTAT (F)
Opens
30 ± 5
Closes
45 ± 5
OUTDOOR-AIR INLET SCREENS
Cleanable. Quantity and size depend on options selected.
RETURN-AIR FILTERS
Throwaway
Quantity...Size (in.)
2...16 x 25 x 2
Bhp
— Brake Horsepower
548
F