State Industries SHE50-100NE, SHE50-100PE Gas Valve Removal Procedure, Gasket, Orifice

ULTRA HIGH EFFICIENCY POWER VENT/POWER DIRECT VENT - SERVICE MANUAL

GAS VALVE

The outlet of the gas valve is connected by flange directly to the side of the Venturi (page 14). There is no manifold gas line on the water heater. A gas orifice with gasket is fitted into the gas valve’s outlet flange. See the images below.

Gas Valve Removal

The gas valve must be removed to inspect the gas orifice. There are 3 - 5/32” hex head screws that secure the gas valve to the Venturi. Long T handle hex wrenches (8-10”) will save considerable time when removing/installing the gas valve, blower and burner.

	24 VAC Gas Valve
5/32” hex wrench

Venturi

Gas Orifice 24 VAC Gas Valve

& Gasket

Venturi

Gas Orifice

& Gasket

GAS VALVE REMOVAL PROCEDURE

1Ensure power to the water heater is turned off.

2Turn off the supply gas shut off valve.

3Disconnect supply gas line to water heater.

4Remove 3 gas valve mounting screws - 5/32” hex head machine screws. Support gas valve body when removing last screw. Long T handle hex wrenches (8-10”) will save considerable time when removing/installing the gas valve.

5Carefully lift gas valve body off of flange connection on Venturi.

6Gas orifice and gasket are now accessible.

Natural Gas Orifice	0.191”
Propane Gas Orifice	0.162”
Gasket	Orifice

Technical Literature Department	15 of 52	Ashland City, TN © 2008
Servicing should only be performed by a Qualified Service Agent