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18 43D0122
CAUTION
Pipe Coupling
To Heater
Valve
Gas Supply
Inlet
Use new black iron or steel pipe. Internally tinned copper or copper tubing can be
used per National Fuel Code, section 2.6.3, providing gas meets hydrogen sulfi de
limits, and where permitted by local codes. Gas piping system must be sized to
provide minimum inlet pressure (Listed on Data Plate) at the maximum fl ow rate
(BTU/Hr). Undue pressure loss will occur if the pipe is too small.
A manual shutoff valve must be installed upstream of the appliance. Union tee
and plugged
1
/8" NPT pressure tapping point should be installed upstream of
the appliance. Refer to Figure 13.
CONNECTING THE GAS
NOTICE: A qualified gas appliance installer must connect the heater to the gas supply. Consult
all local codes.
IMPORTANT: Hold heater valve fi rmly with a wrench to prevent movement when connecting to inlet pipe.
Manual Shutoff
Valve
Pipe
Stainless
Flexible Tube, Pipe
or Metal Tube
Figure 13- Gas Connection
Always use an external regulator for all propane/LPG heaters and high pressure one to two-pound systems
only, to reduce the supply tank pressure to a maximum of 13" w.c. This is in addition to the internal regulator in
the heater valve.
CAUTION
CHECK GAS TYPE: The gas supply must be the same as stated on the heater’s
rating plate. If the gas supply is different, DO NOT INSTALL THE HEATER. Contact
your dealer for the correct model.
Locations that the Pressure
Tapping Point May Be Installed