20 Terms
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Water heaters
Industry: Household appliances
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Water heaters
Safety shut off valve
Household appliances; Water heaters
A device on a gas appliance which shuts off the gas supply to prevent a hazardous situation. A flame failure safety shut off operates when the actuating flame becomes extinguished. A 100% shut off ...
Scale
Household appliances; Water heaters
A coating or layer (usually lime, biocarbonate or calcium) on the bottom of a tank or interior parts, that may prevent heat transfer.
Sealed combustion
Household appliances; Water heaters
Sealing of combustion chamber to prevent spillage of combustion products.
British thermal unit (BTU)
Household appliances; Water heaters
Unit of heat energy required to raise 1 lb. of water 1°F.
Net usable BTU
Household appliances; Water heaters
That portion of a fuel's heat energy actually transferred into the water by the heater.
Temperature & pressure relief valve (T & P valve)
Household appliances; Water heaters
A safety device used to expel excess pressure or temperature from inside a tank.
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