NOTICE TO RIGGERS

HOOK RIGGING SHACKLES THROUGH HOLES IN BASE RAIL, ON ALL FOUR SIDES. HOLES IN BASE RAILS ARE CENTERED AROUND THE UNIT CENTER OF GRAVITY. USE WOODEN TOP SKID, WHEN RIGGING, TO PREVENT RIGGING STRAPS FROM DAMAGING UNIT.

CAUTION: ALL PANELS MUST BE IN PLACE WHEN RIGGING.

UNIT

RIGGING WEIGHT*

 

A

B

 

 

C

lb

kg

in.

mm

in.

mm

in.

mm

 

569C072

390

177

45.0

 

1143

38.5

 

978

35.5

 

904

569C090

420

192

45.0

 

1143

38.5

 

978

43.5

 

1105

569C120

445

203

45.0

 

1143

38.5

 

978

43.5

 

1105

576B090

560

255

45.0

 

1143

38.5

 

978

43.5

 

1105

576B102

614

280

45.0

 

1143

38.5

 

978

43.5

 

1105

576B120

614

280

45.0

 

1143

38.5

 

978

43.5

 

1105

*Weights are for aluminum coils.

Fig. 3 — Rigging Label

Fig. 4 — Typical Compressor Mounting (576B Units) B. Filter Drier and Moisture Indicator

The filter drier is factory installed. Moisture indicator is a field-installed accessory and should be installed just after liquid line shutoff valve at the evaporator coil. Do not use a receiver. A receiver is not supplied with the unit and should not be used.

NOTE: Unit is shipped with R-22 holding charge. System pressure must be relieved before removing caps. Recover refrigerant prior to brazing.

Pass nitrogen or other inert gas through piping while braz- ing to prevent formation of copper oxide.

Install field-supplied thermostatic expansion valve(s) in evaporator section. It is recommended that a field supplied liquid line solenoid be positioned in the main liquid line (near the evaporator coil). It should be wired to close when compressor stops to minimize refrigerant migration during the ‘‘OFF’’ cycle.

Table 2 — Refrigerant Piping Sizes

LINEAR LENGTH OF PIPING — FT (M)

 

 

0-25

25-50

 

 

 

 

50-75

75-100

 

UNIT

(0-7.6)

(7.6-15.2)

 

(15.2-22.9)

(22.9-30.5)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Line Size (in. OD)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L

S

L

S

 

 

L

 

S

L

S

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

569C072

1/

2

11/

1/

11/

8

 

1/

2

 

11/

1/

11/

8

 

 

8

2

 

 

 

 

8

2

 

569C090

1/

2

11/

1/

11/

8

 

5/

8

 

11/

5/

13/

8

 

 

8

2

 

 

 

 

8

8

 

569C120

5/

8

11/

5/

13/

8

 

5/

8

 

13/

5/

13/

8

 

 

8

8

 

 

 

 

8

8

 

576B090

1/

2

11/

1/

11/

8

 

5/

8

 

11/

5/

13/

8

 

 

8

2

 

 

 

 

8

8

 

576B102

5/

8

11/

5/

11/

8

 

5/

8

 

13/

5/

13/

8

 

 

8

8

 

 

 

 

8

8

 

576B120

5/

8

11/

5/

11/

8

 

5/

8

 

13/

5/

13/

8

 

 

8

8

 

 

 

 

8

8

 

 

LEGEND

 

 

 

 

 

 

 

 

 

 

 

L — Liquid Line

S — Suction Line

 

 

 

 

 

 

 

NOTES:

1.Pipe sizes are based on a 2° F (1° C) loss for liquid and suction lines.

2.Pipe sizes are based on the maximum linear length shown for each column, plus a 50% allowance for fittings.

3.Charge units with R-22 in accordance with unit installation instructions.

Table 3 — Liquid Line Data

 

 

MAX

 

LIQUID LINE

 

UNIT

ALLOWABLE

Max Allowable

Max Allowable

LIQUID LIFT

Pressure Drop

Temp Loss

 

 

Ft

 

M

psi

kPa

F

C

569C072

86

 

26.2

7

48.3

2

1

569C090

60

 

18.3

7

48.3

2

1

569C120

70

 

21.3

7

48.3

2

1

576B090

60

 

18.3

7

48.3

2

1

576B102

65

 

19.8

7

48.3

2

1

576B120

65

 

19.8

7

48.3

2

1

NOTE: Values shown are for units operating at 45 F (7.2 C) saturated suction and 95 F (35 C) entering air.

V. ELECTRICAL CONNECTIONS

WARNING: The unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of electrical wire connected to the unit ground lug in the control compartment or conduit approved for electrical ground when installed in accordance with the NEC and local electrical codes. Failure to adhere to this warning could result in personal injury.

CAUTION: Failure to follow these precautions could result in damage to the unit being installed:

A.Field Power Supply (Fig. 5-7)

1.Make all electrical connections in accordance with NEC ANSI/NFPA (American National Standards Institute/ National Fire Protection Association) 70, latest edition, and local electrical codes governing such wiring. Refer to unit wiring diagram.

2.Use only copper or copper-cladconductor fan connec- tions between field-supplied electrical disconnect switch and unit. DO NOT USE ALUMINUM WIRE. Maximum wire size is no. 2 AWG (American Wire Gage).

3.Voltage to compressor terminals during operation must be within voltage range indicated on unit name- plate (also see Table 4). On 3-phase units, voltages between phases must be balanced within 2% and

5

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Bryant 576b installation instructions Refrigerant Piping Sizes, Liquid Line Data, Field Power Supply Fig