Gas Pressure - State Water Heaters SandBlaster SBD71 120 Service Handbook

Supply Gas
Maximum Supply Pressure
Minimum Supply Pressure
Manifold Pressure
The supply gas pressure is normally measured at the dirt leg or at the gas pressure
tapping on the gas supply shutoff valve. This reading must be measured with 'flowing'
gas.
The manifold gas pressure is measured at the manifold pressure tap of the gas valve
when the gas is flowing.
Technical Training Department
Ashland City, TN ©2003
SBD TANK TYPE HEATERS
SERVICE HANDBOOK
GAS PRESSURE REQUIREMENTS
Dirt Leg
Manifold
Gas Port
Natural Gas
10.5" W.C.
5.0" W.C.
4.0 " W.C.
10
Manifold
Pressure
Tap
Propane Gas
13.8" W.C.
11" W.C.
10" W.C.