Comment Fonctionne Le Dispositif De Dг Clenchement Thermique Trd Rheem hot water heaters have a device in the combustion chamber called thermal release device (trd). it contains a vial filled with liquid that seems to be mounted in a flex metal plate. it is a safety device that is supposed to trip when the temperature inside the combustion chamber goes above safe limit. this could happen due to "flammable. Water heater trd thermal release device 101.
Water Heater How Does Thermal Release Device Trd Work Home The pipe is already double walled just above the water heater draft hood and insulating it will not help as you are not losing that much heat in that pipe. some 50 gallon water heaters require a 4" vent, but if the water heater is designed for a 3" vent pipe, as twowaxhack said, that would provide a quicker draft, assuming that 3" would go all. If anyone else comes across this, it is a 106 condition. also advise the customer to call a plumber. most water heaters that use this type of safety have to be replaced if the trd trips. caused of the glass vial breaking are: inside of water heater getting super heated, the water getting dropped or getting rocked by something hitting it. The trd is designed to break when excess heat builds up in the combustion chamber of your water heater. the trd "is" a safety device. the number one cause of failure is due to hot combustion gasses back drafting down the vent pipe, due to inadequate flue design. 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.
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