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Is there a universal water
heater gas valve? NO E-mail: geno03245w@gmail.com Back to 14 things needed for gas water heater |
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they make a universal water heater gas valve? No such thing ... because the flow of gas to pilot and burner much match the BTU output of heater... Some residential heaters are 30,000 ... some 40,000 ... a few are 50,000... Resource: Typical spec sheet They make high volume residential heaters up to 199,000 BTU Resource Polaris water heater Then propane is different than natural gas... and then there's the oil-fired heater There are heaters with no pilot light ... Resource Troubleshoot power vent water heaters Some heaters have pancake burners, while others have low nox burners ... Resource: basic parts for gas water heater And commercial heaters with massive burners and higher gas pressures Resource: Typical spec sheet And boilers that heat water and space for entire house or building ... can reach giant proportions The gas valve manufacturer's probably have standardized gas valves to meet each need ... and then water heater and appliance manufacturers build around those specs |
 Inside
gas controlHoneywell electronic gas controls receive power from thermopile that supplies electric current to a circuit board (see images). The circuit board has 3 connection points that supply power to electromagnets. The main gas supply magnet shuts off gas to pilot and burner if TCO trips or if pilot light goes out, or if water heater is turned off. The manifold magnet responds to temperature measurements and turns gas on to main burner during the call for heat. Mechanical gas control valves also have electromagnet that receives current from thermocouple (see image), but there is no circuit board. The gas supply must be kept dry and clean or the gas control can clog and fail. When working on water heaters, installing and repairing, care must be taken to keep gas lines clean. Any debris or moisture entering gas valve can cause failure, requiring replacement of gas valve. |
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