Service Manual

Resettable Thermal Switch Replacement

Step1. Position gas control powerswitch to

the “OFF” position.

Step 2.Remove outer jacket door.

Step3. Disconnectredwire leads from resettable thermal switch.

Step4. Remove (2) ¼” hex drive screws from the manifold

cover and slid t

o the rightto remove from burner

assembly.

Step6. Remove resettable thermal switch from manifold

cover (Phillipsscrewdriver).

Step7. Place new resettable thermal switch in place.Be

sure contactsurface of resettable thermal switch and

manifold cover are free of any debris.Secure resettable thermal switch intoplace using screws from step6.

DO NO

T OVERTIGHTEN SCREWS.

Step8. Place manifold cover back in position and secure using the screws from step4.

Step9. Reconnect wire leads from gas control and thermopile to resettable th

ermal switch.

Note: Wire termination is interchangeable with eitherresettable thermal switch connection.

Step 10. Replace outer jacket door.

Step 11. To resume oper

ation follow the instructions locatedonthe lighting instructions labelorthe lighting

instructions locatedinthe installation and operation manual.

Manifold Cover

¼” Hex Drive Manifold

Cover Screws

Phillips Screws

Red Wire Leads

UTTW SERVICE PROCEDURE IX

Resettable Thermal Switch Testing

and Replacement

Page 30

Gas Control shown in the “OFF” Position