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Section 4: Installing the gas line
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
to purchase a conversion kit.
• Conversion kits must be installed by a qualified service technician.
Gas Pressure
Optimum appliance performance requires proper input pressures.
Gas line sizing requirements will be determined in ANSI Z221.3 National
Fuel Gas Code in the USA and CAN/CGA B149 in Canada.
Pressure requirements (during operation):
Pressure Requirements
Model
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.
• Only install gas shut-off valves approved for use by the state, province,
or other governing body in which the fireplace is being installed.
Gas connection
• See Figure 5 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.
XG0817
Natural Gas
Propane
5.5" W.C.
11" W.C.
3.5" W.C.
10" 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.
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 1/2 lb. This will damage the gas
control valve.
Gasline Access
1.12" dia.
3"
4.62"
to center
Figure 5. Gas Inlet Supply location
Installation
9
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