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Section 5: Installing the gas line
Fuel Type
• 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 dealer.
Gas Pressure
• Optimum appliance performance requires proper input pressures.
• Gas line sizing requirements will be determined in ANSI Z223.1/ NFPA
54 National Fuel Gas Code in the USA and CAN/CGA B149.1 in Canada.
Pressure requirements (during operation):
PRESSURE REQUIREMENTS
Gas Pressure
Minimum inlet pressure
Manifold pressure
Figure 20. Pressure Requirements
• 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.P.T. 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.
• Only 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 20.b or 20.c for location of gas line access.
• Flexible gas connectors must not exceed 2 feet in length, unless
allowable within local regulations.
• Connect incoming gas line to the 1/2"or 3/8" gas inlet port.
• 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.
NOTICE
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 0.5 psig. (14" w.c.) This will
damage the gas control valve.
32
Natural Gas
Propane
5.5in. w.c.
11in. w.c.
3.5in. w.c.
10in. w.c.
DANGER
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 a 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. A fire or explosion
will occur, causing serious injury, property damage or death.
WARNING
An inspection of the explosion relief flappers and door MUST be made
prior to lighting the fireplace. A faulty seal on the door gasket and/or
explosion ports will result in products of combustion leaking into the
living space and may result in carbon monoxide poisoning.
GAS LINE ACCESS
PL38, P38, PL42, P42
1
1
4 "
2"
8 1/2
Figure 20.b Gas Inlet Supply location
(left side shown)
GAS LINE ACCESS
PL52, P52
Figure 20.c Gas Inlet Supply location
(left side shown)
Installation
XG0199 - 170223
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