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Bryant Single Package Rooftop Electric Heating/Electric Cooling Unit 558D User Manual

Page 5

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Table 1 — Specifications

BASE UNIT 558D

036

048

060

072

NOMINAL CAPACITY (tons)

3

4

5

6

OPERATING WEIGHT (lb)

Unit

365

375

395

470

Durablade Economizer

34

34

34

34

PARABLADE Economizer

42

42

42

42

Roof Curb

115

115

115

115

COMPRESSOR TYPE

Reciprocating

Reciprocating

Reciprocating

Scroll

Quantity

1

1

1

1

Oil (oz)

50

50

50

54

REFRIGERANT TYPE

R-22

Operating Charge (lb-oz)

3-6

5-8

7-0

7-11

CONDENSER COIL

Enhanced Copper Tubes, Aluminum Lanced Fins

Rows...Fins/in.

1...17

1...17

2...17

2...17

Total Face Area (sq ft)

7.36

13.19

10.42

10.42

CONDENSER FAN

Propeller Type

Nominal Cfm

3500

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

EVAPORATOR COIL

Enhanced Copper Tubes, Aluminum Double-Wavy Fins

Rows...Fins/in.

2...15

2...15

3...15

4...15

Total Face Area (sq ft)

4.17

5.5

5.5

5.5

EVAPORATOR 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

Type Drive

Std

Direct

Direct

Direct

Belt

Alt

Belt

Belt

Belt

Nominal Cfm

Std

1200

1600

2000

2400

Alt

1200

1600

2000

Maximum Continuous Bhp

Std

.34

.75

1.20

2.40

Alt

1.00

1.00

1.3/2.4*

Motor Frame Size

Std

48

48

48

56

Alt

48

48

48/56*

Nominal Rpm High/Low

Std

860/800

1075/970

1075/970

Alt

Fan Rpm Range

Std

1070-1460

Alt

760-1090

840-1185

900-1300

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

Nominal Motor Shaft Diameter (in.)

Std

1

2

1

2

1

2

5

8

Alt

1

2

1

2

5

8

Fan Pulley Pitch Diameter (in.)

Std

4.5

Alt

4.5

4.0

4.5

Belt, Quantity...Type...Length (in.)

Std

1...A...40

Alt

1...A...39

1...A...36

1...A...39

Pulley Center Line Distance (in.)

Std

14.7-15.5

Alt

10.0-12.4

10.0-12.4

14.7-15.5

Speed Change per Full Turn of

Std

80

Movable Pulley Flange (rpm)

Alt

65

70

80

Movable Pulley Maximum Full Turns

Std

5

From Closed Position

Alt

5

5

5

Factory Setting

Std

3

Alt

3

3

3

Factory Speed Setting (rpm)

Std

1225

Alt

890

980

1060

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

500 ± 50

Cutout

428

428

Reset (Auto.)

320

320

LOW-PRESSURE/LOSS-OF-CHARGE SWITCH (Liquid Line)(psig)†

Cutout

7 ± 3

Reset (Auto.)

22 ± 7

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

LEGEND

Bhp — Brake Horsepower

*Single phase units — 1.3 bhp/48 frame.

Three phase units — 2.4 bhp/56 frame.

†Requires an optional or accessory controls upgrade kit.

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