Any adjustment on gas control valve
#1
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Any adjustment on gas control valve
My water heater Rheem PowerVent Model 21VP50E-1 A 50 US Gal. has too large a flame and turns off and on. When I turn off gas valve in supply line partially, the flame is reduced and the water heater works normally. I had the natural gas supply going into the water heater checked and it was 9 in wc. The gas control valve in the water heater is a Honeywell VR8204A 1219 marked: Reg 4.0 Adj, 3-6 range, 1/2 PSI in. Is it any adjustment I can make on the gas control valve to get a normal flame?
Hope someone can help.
Anders
Hope someone can help.
Anders
#2
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New heater or new condition??? They are preset from the factory, not sure you can or should adjust anything. But they have different orifice's for natural gas and propane.
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Most appliances call for incoming natural gas pressures of between 7 and 11 inches water column. You are ok there. Sounds like your valve may be bad. Been awhile since Ive seen a Rheem heater so Im not sure but most gas valves provide a fitting to check manifold/burner pressure. This should be @ 3.5 inches water column.
#4
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There should be a tap under the gas control valve to check the manifold pressure (the pressure going into the burner). I recommend you have that checked. If the pressure is too high, you are over gassing the burner which can cause the symptoms you describe.