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30<br />
LP-<strong>Gas</strong> Regulators<br />
Indoor Installation of Regulators<br />
Regulators installed inside a building must have the bonnet vent<br />
piped away. To maintain the large vent capacity relief feature of<br />
the regulator, the vent piping should be at least as large as the vent<br />
opening on the regulator bonnet.<br />
To pipe away the LV4404B regulator, for example, remove the vent<br />
screen from the bonnet vent and install 3/4” pipe into the bonnet<br />
vent threads and pipe to the outside of building. Install vent protection<br />
on the outlet of the pipe away vent line. To utilize the vent<br />
screen and retainer supplied with the regulator, use a 3/4” NPT<br />
90º elbow. Insert screen into 3/4” F.NPT outlet of elbow. Thread<br />
retainer into outlet at least 1 turn. Install the elbow with vent screen<br />
pointing down. The vent line must be installed in a manner to prevent<br />
the entry of water, insects, or foreign material that could cause<br />
blockage. The discharge opening must be at least 3 feet from any<br />
opening below it.<br />
NOTE: Do not use regulators with over 5 PSIG inlet pressure<br />
indoors. Follow all local codes and standards as well as NFPA<br />
54 and 58.<br />
3/4” Elbow<br />
Vent Screen<br />
and Retainer<br />
To appliances<br />
From 1 st stage<br />
regulator<br />
3/4” Elbow<br />
3/4” Pipe<br />
3/4” Elbow
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