PRESSURE RELIEF VALVE INSTALLATION
To conform to local building codes, it may be necessary to install a pressure relief valve. A 3/4" pressure relief valve having a capacity equal to BTU/HR output of the model to be installed is recommended for this appliance. The maximum acceptable pressure re- lief valve setting is 125 psi.
A 3/4" NPT connection is provided in the inlet/outlet header for installation of a pressure relief valve. The valve shall be installed in a vertical position. Do not over tighten. Install pressure relief valve hand tight plus 1/2 turn.
Pressure Relief Valve
PRV Discharge
Connection
Inlet/Outlet Header
Fig. #2004
NOTE: To avoid water damage or scalding due to valve operation, drain pipe must be connected to valve outlet and run to a safe place of discharge. Drain pipe must be the same size as the valve discharge connection throughout its entire length and must pitch downward from the valve. No shutoff valve shall be installed between the relief valve and the drain line. Valve lever should be tripped at least once a year to ensure that waterways are clear.
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