State Industries GSX, GS6, GPX manual Checking the GAS Supply Pressure, Then

Checking the Gas Supply Pressure

Gas pressure checks are done with flowing gas using a gas pressure gauge capable of reading pressure in inches of water column.

•Supply gas pressure checks are measured before the gas control valve/thermostat and as close to the water heater as possible.

•Manifold (main burner) gas pressure is measured at the pressure tap on the bottom of the gas control valve/thermostat. Use an Allen wrench to remove the plug then attach the gas gauge.

NOTE: Desired gas pressures will be noted on the gas valve label located on the gas control valve/ thermostat.

MANIFOLD GAS PRESSURE TEST

Figure 16

Combustion Air Test

The Installation Instructions and Use & Care Guide gives guidelines under “Air Requirements” and “Unconfined “ or “Confined Space” sections. If you want to test for a lack of air:

1.Turn on every appliance and fan that exhausts air from the utility room and/or house. Make sure all windows and doors are closed, as well as chimney dampers.

2.Open a hot water faucet so that the main burner will ignite

3.Remove the outer door of the water heater – not the inner door

4.Monitor the flame characteristics for several minutes

If the flame begins to “yellow” open a door or window, to the outdoors, to see if additional air corrects this back to blue. If it does, the room needs more air supply.

Figure 17