Section 5: Installing The Gas Line - Montigo L42DFN Installation & Maintenance Manual

L42DF* Indoor Gas Fireplace

Section 5: Installing the Gas Line

Section 5-1: FUEL CONVERSION
■ Verify that your fireplace is compatible with your available gas
type. (Natural Gas or Propane shown by "N" or "L" in your model
number
■ If gas type is not compatible, contact your local Montigo
representative.
■ Conversion kits must be installed by a qualified service technician.
Section 5-2: GAS PRESSURE
■ Optimum appliance performance requires proper input pressures.
■ Gas line sizing requirements will be determined in ANSI Z223.1
National Fuel Gas Code in the USA and CAN/CGA B149 in
Canada.
Pressure requirements are:
Gas Pressure
Minimum inlet pressure
Manifold pressure
■ The manifold outlet pressure is set from the factory to the
appropriate pressure but should be verified.
■ To check pressures, control valves have a provision to remove
a 1/8" N.PT. plug to be fitted with a hose barb.
■ Montigo requires a service shut off valve be located in an
accessible location to isolate the gas supply.
■ O nly install gas shut-off valves approved for use by the state,
province, or other governing body in which the fireplace is being
installed.
Section 5-3: GAS CONNECTION
■ See Figure 23 for location of gas line access.
■ Flexible gas connectors must not exceed 3 feet in length, unless
allowable within local regulations.
■ Connect incoming gas line to the 1/2"or 3/8" gas inlet port.
■ Purge all air out of gas line.
■ Check appliance connection, valve and valve train under normal
operating pressure with a commercially available leak check
solution.
■ DO NOT USE A FLAME OF ANY KIND TO TEST FOR LEAKS.
WARNING
When installing the replace - gas lines, ttings,
accessories or any other objects cannot impede the
proper movement of the door buckles.
Page 22
Installation
Natural Gas Propane
5.5in. w.c. 11in. w.c.
3.5in. w.c. 10in. w.c.
0.875 dia.
3 1/2
10
Figure 23. Gas line access.
NOTE: After gas line is connected, each appliance connection, valve
and valve train must be checked while under normal operating
pressure with either a liquid solution, or leak detection device,
to locate any source of leak. Tighten any areas where bubbling
appears or leak is detected until bubbling stops completely
or leak is no longer detected. DO NOT use a flame of any
kind to test for leaks.
WARNING
When pressure testing the fireplace, Gas line, and input system, follow the
appropriate local codes for your area. DO NOT connect the fireplace to pressures
in excess of 1/2lbs. This will dampage the gas control valve.
CAUTION
Glass doors on gas fireplaces are extremely hot while the fireplace is on and
remain hot even after the fireplace has been turned off. Safety screens are
available and can reduce the risks of severe burns. Please keep children away
from the fireplace at all times.
NOTICE
Do not use ammonia based or abrasive cleaners on the glass, they will permanently
etch the surface. Use an approved gas fireplace glass cleaner such as Kel-Kem or
White off.
WARNING
An inspection of the explosion relief flappers and door MUST be made prior to
lighting the fireplace. Faulty seal on the door gasket and/or explosion ports will
result in combustion products leaking into the living space and may result in
carbon monoxide poisoning.
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XG0181 - 150204