Monessen Hearth BUF400 - Manual (Page 12)

12 61D1013
GAS LINE INSTALLATION
Consult all local codes. All gas piping must be installed to comply with local codes, or in the absence of local
codes, with the latest edition of the National Fuel Gas Code ANSI Z223.1/NFPA54.
Remove the baseplate for ease of gas line installation. Remove three (3) screws along the front edge of the base-
plate. Remove four (4) screws which secure the baseplate to the combustion casing (two at rear and one along
each side). Replace baseplate prior to connecting gas line to heater. Consult heater installation and operating
instructions for correct installation of the heater into the firebox.
The
1 /
2
" gas line may enter either from the left side or right side of the firebox. Gas access holes are provided on
both sides of the firebox.
A listed manual shutoff valve must be installed upstream of the appliance. A union tee and plugged
1 /
8
" NPT
pressure tapping point should be installed upstream of hte appliance.
IMPORTANT: Install main gas valve (equipment shutoff valve) in an accessible location. The main gas valve is
for turning on or shutting off the gas to the fireplace.
A sediment trap may be upstream of the heater to prevent moisture and contaminants from passing through trap
to the heater controls and burners. Failure to do so could prevent the heater from operating reliably. Consult
applicable codes.
An external regulator must be used on all propane / L.P.G. heaters, in addition to the regulator fitted to the heater,
to reduce the supply tank pressure to 13" w.c. (maximum). Any copper tubing used to supply propane / L.P.G.
from the tank must be internally tinned.
Note: When connecting propane / L.P.G. vent-free room heaters, you must use pipe sealant resistant to
propane / L.P.G.
Important: Hold heater regulator with a wrench to prevent movement when connecting to inlet piping.
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.
After completing connection, test all gas joints from the gas meter to the gas heater regulator for leaks. Using
soap and water solution or a gas sniffer. DO NOT USE AN OPEN FLAME.
Plumbing connections should only be performed by a qualified, licensed plumber. Main
gas supply must be off when plumbing gas line to fireplace or performing service.
W
ARNING
Connecting directly to an unregulated
propane / L.P.G. tank can cause an
explosion.
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ARNING
Do not connect directly to natural gas 1/2 PSI or 2 PSI systems. Always make sure
natural gas pressure is regulated 10.5 w.c. (maximum before operating the unit).
W
ARNING