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How to Replace the Thermal Release Device (TRD)
How to Replace the Thermal Release Device (TRD)
Tools Required:
Torx 20 screwdriver
Parts Required: TRD Replacement Kit with TRD
and inner door gaskets, spare screws and clips.
You can tell if the thermal
release device has been
activated. Normally, there is a
small glass bulb in the assembly.
If the assembly has been
activated, then the bulb is
missing. You will also see the
shut off plate rod penetrating
into the bracket assembly.
1446 How to Replace the Thermal Release Device (TRD).docx
TECHNICAL SERVICE DEPARTMENT
Technical Service Bulletin
1-800-432-8373
Rheem Guardian System
Technical Competence, Product Confidence
Page 1 of 4
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Summary of Contents for Rheem Ruud TRD
- Page 1 TECHNICAL SERVICE DEPARTMENT Technical Service Bulletin 1-800-432-8373 How to Replace the Thermal Release Device (TRD) Rheem Guardian System How to Replace the Thermal Release Device (TRD) Tools Required: Torx 20 screwdriver Parts Required: TRD Replacement Kit with TRD and inner door gaskets, spare screws and clips.
- Page 2 TECHNICAL SERVICE DEPARTMENT Technical Service Bulletin 1-800-432-8373 How to Replace the Thermal Release Device (TRD) Rheem Guardian System 1. Shut off gas supply to water heater. Turn gas valve to OFF. (Note your gas control may be different than shown here.) 2.
- Page 3 Technical Service Bulletin 1-800-432-8373 How to Replace the Thermal Release Device (TRD) Rheem Guardian System 5. Locate and remove the thermal release device housing. It is in the middle of the combustion chamber toward the rear. Grab the housing, push down and rotate it counter clockwise 90 degrees.
- Page 4 Allow main burner to burn for 10 minutes to ensure air shut off plate is open. 12. Reset thermostat to safe setting. Rheem recommends no hotter than 120 degrees. 13. Replace jacket door to combustion chamber.
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Questions and answers
How do I reset the temperature controller after replacing the flammable vapor sensor. No fumes present, cycle power and set temp and still getting code 47.