Bryant 549B User Manual
Page 74
74
PHYSICAL DATA — 549B090-120
LEGEND
BASE UNIT 549B
090
102
120
NOMINAL CAPACITY (tons)
7
1
/
2
8
1
/
2
10
OPERATING WEIGHT (lb)
Unit
870
1000
1000
EconoMi$erIV
75
75
75
Roof Curb
223
223
223
COMPRESSOR
Scroll
Quantity
2
2
2
Oil (oz) (each compr)
57
70
57
REFRIGERANT TYPE
R-22
Operating Charge (lb)
Circuit 1
9.5
11.0
10.7
Circuit 2
9.5
11.0
10.8
OUTDOOR COIL
Enhanced Copper Tubes, Aluminum Fins, Fixed Orifice Metering Device
Rows...Fins/in.
2...17
2...17
2...17
Total Face Area (sq ft)
20.5
25.1
25.1
OUTDOOR FAN
Propeller
Quantity...Diameter (in.)
2...22
2...22
2...22
Nominal Cfm
6500
6500
6500
Motor Hp...Rpm
1
/
4
...1100
1
/
4
...1100
1
/
4
...1100
INDOOR COIL
Enhanced Copper Tubes, Aluminum Double-Wavy Fins,
Fixed Orifice Metering Device
Rows...Fins/in.
3...15
4...15
4...15
Total Face Area (sq ft)
8.9
11.1
11.1
INDOOR FAN
Centrifugal Type
Quantity...Size (in.)
Standard
1...15 x 15
1...15 x 15
1...15 x 15
High-Static
1...15 x 15
1...15 x 15
1...15 x 15
Type Drive
Standard
Belt
Belt
Belt
High-Static
Belt
Belt
Belt
Nominal Cfm
3000
3400
4000
Maximum Continuous Bhp
Standard
2.90
2.90
3.70
High-Static
3.70
3.70
5.25
Motor Frame Size
Standard
56
56
56
High-Static
56
56
56
Nominal Rpm
Standard
1725
1725
1725
High-Static
1725
1725
1725
Fan Rpm Range
Standard
730-950
840-1085
860-1080
High-Static
860-1080
860-1080
922-1219
Motor Bearing Type
Ball
Ball
Ball
Maximum Allowable Rpm
2100
2100
2100
Motor Pulley Pitch Diameter Min/Max (in.)
Standard
3.4/4.4
3.4/4.4
4.0/5.0
High-Static
4.0/5.0
4.0/5.0
3.1/4.1
Nominal Motor Shaft Diameter (in.)
Standard
7
/
8
7
/
8
7
/
8
High-Static
7
/
8
7
/
8
7
/
8
Fan Pulley Pitch Diameter (in.)
Standard
8.0
7.0
8.0
High-Static
8.0
8.0
5.8
Belt, Quantity...Type...Length (in.)
Standard
1...A...51
1...A...51
1...A...53
High-Static
1...A...53
1...A...53
1...BX...48
Pulley Center Line Distance (in.)
Standard
16.75-19.25
16.75-19.25
15.85-17.50
High-Static
16.75-19.25
16.75-19.25
15.85-17.50
Speed Change per Full Turn of
Movable Pulley Flange (rpm)
Standard
45
45
45
High-Static
45
45
60
Movable Pulley Maximum Full
Turns from Closed Position
Standard
5
5
5
High-Static
5
5
6
Factory Setting
Standard
5
5
5
High-Static
5
5
5
Factory Speed Setting (rpm)
Standard
730
840
860
High-Static
860
860
972
Fan Shaft Diameter at Pulley (in.)
1
1
1
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 SCREENS
Cleanable.
Screen quantity and size varies with option selected.
OUTDOOR-AIR INLET SCREENS
Cleanable.
Quantity...Size (in.)
4...16 x 20 x 2
4...20 x 20 x 2
4...20 x 20 x 2
Bhp — Brake Horsepower
549B
, 549
C