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Installation
6 312761B
Install Low Power Temperature
Control Modules
The low power temperature control modules are
installed in the Heat Control box at the factory. If a low
power temperature control module must be replaced,
perform the following procedure.
Remove Old Low Power Temperate Control Module
1. On units with a grounding plug, unplug unit from
wall.
On hard-wired units, use facility power switch to
turn off incoming power.
2. Unplug data connection and power cables from low
power temperature control modules. Do not discon-
nect other end of cables.
3. Remove hex head cap screws (124a) from low
power temperature control module.
4. Remove low power module (124).
5. Remove four socket head cap screws (119).
6. Remove base module (125).
Install New Low Power Temperate Control Module
7. Use four socket head cap screws (119) to install
base module (125) onto enclosure back
panel (120).
8. Use two hex head cap screws (124a) to install low
power module (124) onto base module (125).
9. Change rotary switch position on new low power
temperature control module. See Adjust Rotary
Switch on page 7.
10. Reconnect CAN cables (113, 130) and power
cables.
Connect 3-wire Module Power
FIG. 2
ti12703a
124a
124
119
125
120
Connecting the power must be performed by a quali-
fied electrician. The equipment must be grounded.
Grounding reduces the risk of static and electric shock
by providing an escape wire for the electrical current
due to static build up or in the event of a short circuit.
The wire with insulation having an outer surface that is
green with or without yellow stripes is the grounding
wire.
F
IG. 3: Breaker Numbering
141
116
141a
1
2
3
ti12627b
4
Main Power
Breaker