SBN71-120 thru 85-390, SBD30-150/199 TANK TYPE COMMERCIAL
GAS WATER HEATER SERVICE HANDBOOK
GAS VALVE
The supply gas pressure is normally measured at the gas valve inlet gas pressure tap, if available, when the gas is flowing. The manifold gas pressure is measured at the manifold pressure tap of the gas valve when the gas is flowing. Gas valves used are 24 volt AC
INLET VIEW
TOP VIEW
The top view of the gas valve, shown on the right, shows the Main Gas Regulator, Manifold Pressure Tap, Top Knob, and the Limited Bleed Vent Port. The main gas regulator is found under the silver cap (silver cap for Natural Gas or black cap for Propane) screw. It is factory preset to 3.5 inches W.C. and
adjusts gas pressure output from 3.0 to 5 inches water column. Caution: Always test the manifold pressure at the outlet when the gas is flowing.
State Water Heaters | 10 | Technical Training Department |
Ashland City, Tennessee © 2007 |
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