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CAUTION
Do not use Teflon tape on gas line pipe
threads. A flexible sealant suitable for use with
applied gas is recommended.
Form No. PMG-100/200M-0805
16
INSTALLATION
Gas Piping
The gas inlet pipe size is 3/4" NPT pipe thread fitting
to the gas valve. Provide an adequate size gas
supply line. The line should never be smaller than
3/4" NPT and should follow according to the gas
piping diagram below. The fitting is accessed
through the bottom of the case. (See Figure 6.)
Figure 6. Gas Hook-up and Pressure Tap Location and Piping Diagram.
NOTE: Gas line should be of the approved type for
use with natural gas or propane.
Gas line should be kept as short as possible, sized
to furnish the rated BTU, and installed in a way to
protect it from damage. Gas piping must be installed
in accordance with local plumbing codes including a
sediment trap, ahead of the heater gas controls and
a manual shut-off valve located outside the jacket.
NOTE: The internal gas valve is supplied with the
heater, the external manual gas valve supplied with
unit must be plumbed in by the installer. See Figure
6 for gas piping diagram.