Chromalox DH Installation Instructions Manual page 14

Electric duct heaters
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Problem
Contactor
Chatter
Terminals
Heating Up
Pilot Lights
don't turn on
© 2015 Chromalox, Inc.
Causes
Incorrect Control Voltage
Input
Incorrect wire size to
heater
Loose Wiring Connection Tighten wire connections on all terminals.
Light bulb burnt out
Loose Wiring Connection Check wire connections on all control circuit terminations.
Please refer to the Chromalox limited warranty applicable to this product at
http://www.chromalox.com/customer-service/policies/termsofsale.aspx.
2150 N. Rulon White Blvd.
www.chromalox.com
Solution
Check the rated control circuit voltage for the heater provided
on the nameplate. Check supply control voltage & verify that it
matches the nameplate.
Check supply wiring size. Wiring sizing should conform to N.E.C.
424.3(b).
Replace pilot light
Limited Warranty:
Chromalox, Inc.
Odgen, UT 84404
1-800-368-2493
14

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