Monessen Hearth DLX28 - Manual (Page 19)

14D2099 19
Pipe Coupling
To Heater
Valve
CA
UTION
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 sulfide
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 flow 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 15.
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 firmly with a wrench to prevent movement when connecting to inlet pipe.
Manual Shutoff
Valve
Pipe
Stainless
Flexible Tube
Figure 15 - Gas Connection
Always use an external regulator for all propane/LPG heaters 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.
CA
UTION
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.
Gas Supply Inlet
Locations that the
Pressure Tapping
Point May Be
Installed