Gas Information; Gas Line Connection - Monessen Hearth Mojo Series Installation & Owner's Manual

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Gas Information

WARNING
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.
A. Gas Line Connection
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.
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.
WARNING
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.
To Heater
Valve
Stainless
Flexible Tube
Figure 4.1 Gas Connection
Pipe Coupling
Manual Shutoff
Valve
Monessen • Mojo Installation/Owner's Manual • 4623-900 Rev. D • 04/21
WARNING
Connecting directly to an unregulated propane/
LPG tank can cause an explosion.
The heater gas inlet connection is a 3/8" NPT at the valve.
On all control type units, the inlet connection is on the right
side of unit. To connect from the opposite side, route the
pipe around the back portion of the unit.
When tightening up the joint to the valve, hold the valve
securely to prevent movement.
Test all gas joints from the gas meter to the heater valve for
leaks using a gas analyzer or soap and water solution after
completing connection. DO NOT USE AN OPEN FLAME.
Check the gas pressure with the appliance burning and
the control set to HIGH.
Pipe
Locations that the Pressure Tapping Point
May Be Installed
Gas Supply Inlet
15