Montigo R320-ST - Manual (Page 20)

Figure 1 Sec.6 Gas Inlet Supply location.
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
on rating plate.
Gas 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 Figure1Sec.6below 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" Male NPT gas inlet.
Purge all air out of gas line before connecting port.
Check appliance connection, valve and valve train under normal
operating pressure with a commercially available leak check solution.
DONOTUSEAFLAMEOFANYKINDTOTESTFORLEAKS.
Pressure Requirements
Gas Pressure Natural Gas Propane
MinimumInletPressure 5.5" W.C. 11" W.C.
Manifold Pressure 3.5" W.C. 10" W.C.
Section6:Installingthegasline
1 ¾”
1/2” MPT gas
inlet
Figure 2 Sec.6 Identifying the Gas Inlet and Combustion Air Switch Sensor Line
Located next to the Gas Inlet is the Combustion Air Switch Sensor
Line.
Do NOT obstruct or alter the Combustion Air Switch Sensor Line.
R320-ST & R420-ST Power Vent Indoor Gas Fireplace
Page 20
XG0774 - 150121
Installation