Bryant 548F Manuel d'utilisateur télécharger pdf (Page 5)

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Table 1 — Physical Data

LEGEND

*Indoor coil fin material/outdoor coil fin material.

†Weight of 14-in. roof curb.

**Single phase/three phase.

UNIT SIZE 548F 036 048 060 072

NOMINAL CAPACITY (tons)

3 456

OPERATING WEIGHT (lb)

Unit

Al/Al*

500 520 550 590

Al/Cu*

— ———

Economizer

Durablade

34 34 34 34

EconoMi$er

47 47 47 47

Roof Curb†

115 115 115 115

COMPRESSOR

Reciprocating, Hermetic Scroll, Hermetic Scroll, Hermetic Scroll, Hermetic

Quantity

1 111

Oil (oz)

45 42 50 54

REFRIGERANT TYPE

R-22

Operating Charge (lb-oz)

5-1 6-0 8-0 11-2

OUTDOOR COIL

Enhanced Copper Tubes, Aluminum Lanced Fins, Fixed Orifice Feed 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

...1100

Watts Input (Total)

325 325 325 325

INDOOR COIL

Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Fixed Orifice Feed 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...10 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 835-1185 900-1300 —

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

Alt

—

High-Static

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

555—

High-Static

6 655

Factory Setting Std

———3

Alt

333—

High-Static

Factory Speed Setting (rpm) Std

— — — 1225

Alt

856 975 1060 —

High-Static

1233 1233 1396 1396

Fan Shaft Diameter at Pulley (in.)

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

Quantity...Size (in.)

1...20 x 24 x 1

RETURN-AIR FILTERS

Throwaway

Quantity...Size (in.)

2...16 x 25 x 2

Al —

Aluminum

Bhp —

Brake Horsepower

Cu —

Copper

1 2 3 4 5 6 7 8 9 10 ... 47 48

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Bryant 548F Manuel d'utilisateur Page 5

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