THIS PROCEDURE MUST BE PERFORMED BY A QUALIFIED TECHNICIAN.
Item #1040348
WARNING
HAZARDOUS VOLTAGE: Risk of electric shock. Can cause injury or death. Heater may be connected to more than one branch circuit. Disconnect power to all circuits before servicing.
Disconnect Power
Disconnect power to all branch circuits of the heater.
Remove Front Panel
Remove the front panel of the heater.
Position Control Board in Service Position
Remove the control board mounting plate by sliding if off its mounting screws. Hook it on these same screws using the eyelets provided on the front of the mounting plate for ease of service and access to the heater’s wiring compartment.
Verify System is De-energized
Check that all branch circuits have been de-energized by doing a voltage test at the heater’s line voltage terminal block.
Cut Tie Wraps
Cut the tie wrap wire fasteners from the line voltage wire harness running from the heater’s control circuit board.
Caution
Screw connections to the limit controls could be damaged if wire and wire crimp are not supported when screw is loosened or tightened. Also, avoid putting any side pressure on the quick disconnect terminals of the new wires as this could cause the loosening of these
Replace Wires
One at a time, replace the following wires in the heater with the corresponding color and length of wire in the kit:
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Element to relay
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Relay to terminal block
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Limit control to element
Tighten Connections
Once the wires have been replaced, be sure to tighten all connections securely. (At the factory, limit control connection screws are tightened to 25 in-LBS, and the terminal block screws are tightened to 15 in-LBS.)
Tie Wrap Wires
With the tie wrap wire fasteners supplied in the kit, tie the harness wires together to ensure that they do not come into contact with the element connections.
Restore Power
Restore power to the heater and test for proper unit operation and amperage draw.
Verify Operation
If heater tests properly, reassemble.
NOTE: Screw connections to the limit controls could be damaged if wire and wire crimp are not supported when screw is loosened or tightened. Also, avoid putting any side pressure on the quick disconnect terminals of the new wires as this could cause the loosening of these connections.