Installation, Fig. 41 - control wiring diagram, Carrier – Carrier 30HH User Manual

Page 42

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INSTALLATION

Carrier

0FF-0\'

SWITCH

CHILLED WATER

SAFETY THERMOSTAT

-USE

COMTACT

IN COMPR

MOTOR

STARTERS

220 V

COMPR

CRANKCASE

HEATERS

(ONE PER

COMPR )

LOCATION FOR

FIELD-SUPPLIED

AUXILIARY SAFETY

INTERLOCKS

PANEL ViX

light

FUSE

-4]

TEMP CONTROL

BULB IN CHILLED

WATER LINE

SOLENOID

OPERATED

CYLINDER
UNLOADING DEVICE

(SEE NOTE 3)

LIQUID LINE

SOLENOID

VALVES

HOLDING COILS
IN COMPR

MOTOR
STARTERS

(SEE NOTE I )

LO-HI

PRESSURE

SWITCHES

NOTES:

]. The 30HH,i!J units have the following number of com

pressors:

30HH,HJ015

- i

30HH,KJ020, 025, 030 - 2
30HH,HJ045

- 3

30HH055, 30HH,I!J065 - 4

multiple

compressor

units

the

compressors

are

started in sequence from individual load switches.

2. Liquid line solenoid valves are supplied one per refrig

erant circuit on all models.

3. The single compressor 30HH,HJ015 models are supplied

with two cylinder unloading devices.

4. Detailed reproducible wiring diagrams showing control

wiring, power wiring and location of control com.ponents
are available from Carrier offices.

Fig. 41 - Control Wiring Diagram