Chromalox PK477 - Manual (Page 2)

1347 HEIL QUAKER BLVD., LAVERGNE, TN 37086
Phone: (615) 793-3900 www.chromalox.com
INSTALLATION
WIRING
1. Cut lead wires protruding from outlet box approximately 4”
from wall surface and strip end insulation 1 /
2
”.
2. Always test the heater circuit for electrical shorts before con-
necting the thermostat.
3. Remove thermostat knob and front cover.
4. Using wire-nuts or other local code approved devices, connect
load and line wires to appropriate color coded thermostat
wires. (See wiring diagrams below.)
5. Mount the thermostat to the outlet box using the screws pro-
vided. Take care not to push or damage the bimetal sensing ele-
ment during installation.
6. Replace the thermostat front cover and knob.
WARNING: Any knob temperature setting below
50°F may result in freezing.
WARNING: Hazard of Electric Shock. Disconnect all
power before wiring or servicing this control.
Electric wiring to heater must be installed in accordance with
National Electrical Code and with local codes.
WARNING: Use copper conductors only.
Connect wires according to wiring diagrams (Figures 1 and 2).
Note: Electrical connections should be made with generous loops
of wire — approximately 6” per lead.
Note: If load amperage or voltage rating exceeds switch rating, a
contactor must be used.
Figure 1: Figure 2:
Note:
1.
Connect anticipator lead (white) in parallel with heater.
2. Thermostat performance will be degraded if anticipator connection is omitted.
Note:
1.
Suitable for control of one heating load only.
2. No separate connection required for heat anticipation.
3. Temperature control switch is located on right hand side when thermostat is viewed
from the rear.
Limited Warranty:
Please refer to the Chromalox limited warranty applicable to this product at
http://www.chromalox.com/customer-service/policies/termsofsale.aspx.