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H34D Gas Fireplace
Installing The Gas Line
The gas line must be installed before finishing the H34D Fireplace.
Natural Gas requires a minimum inlet gas supply pressure of 5.5"
W.C. & a manifold pressure of 3.5" W.C. Propane Gas requires a
minimum inlet gas supply pressure of 11" W.C. & a manifold pressure of
10" W.C. Provision must also be made for a 1/8" N.P.T. plugged tapping
and be accessible for test gauge connection immediately upstream of the
gas supply controls to the appliance. The fireplace gas connection and
the main operating gas valve is located behind the removable trim at the
bottom of the unit and need only be attached to the gas line with an
approved fitting, as required by the applicable installation codes.
• Only use gas shut-off valves approved for use by the state, province,
region, or governing body, in which the appliance is being installed, or
as required by the applicable installation codes.
• Flexible gas connectors must not exceed 3 feet in length, unless it is
allowable within applicable installation codes.
Figure 5. Gas line access.
The appliance and its individual shutoff valve must be disconnected from
the gas supply piping system during any pressure testing of that system
at test pressures in excess of 1/2 psig (3.5 kPa).
The appliance must be isolated from the gas supply piping system by
closing its individual manual shutoff valve during any pressure testing of
the gas supply piping system at test pressures equal to or less than 1/2
psig (3.5 kPa).
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.
Installing The Remote Switch
The H34D's gas valve, located behind the lower trim, may be connected
to a wall switch. The valve generates its own power on a millivolt
circuit. Use only low voltage wire, and DO NOT connect any
external power to it.
Refer to Figure 30 for wiring requirements.
Note: The switch location must not exceed 30' from the fireplace.
Page 4
Installation
This section covers the installation of direct venting and terminations.
Installation Requirements
H34D fireplaces are certified for use with Montigo Standard Series
(4" / 7") venting components.
Minimum 2" clearance to combustibles required for vent pipes
Use only certified Montigo vent components. (Use of other parts will void the
Montigo warranty, and may impede the operation of the fireplace.)
All joints must be secured with a minimum of two screws per joint
Vent terminations must not be recessed in walls or siding
Horizontal runs must be supported by a minimum of two supports
per horizontal run. A minimum of one screw on each side of
support is also required
Flex vent sections may be stretched up to 50% of their total length
(eg. a 24" section may be stretched to 36").
Maximum horizontal run with no vertical rise is 6 feet.
Solid vent sections may be cut less than half way from the female end
Venting components can be used in any combination of solid/rigid
pipe or flex pipe and in any orientation (Male connectors can face
in any direction)
Vent Terminations
Selecting A Termination Location
Choosing your vent termination location will help to determine whether
you need to use a top vent or rear vent fireplace. Figure 6a, below,
shows typical fireplace locations and the venting options they provide.
For a more detailed diagram of allowed termination locations, see
Appendix A.
Figure 6a. Fireplace locations and vent terminations.
Vent terminations can be very hot. If the termination
is less than 7 feet above a public walkway, it should
be fitted with a certified Montigo Heat Guard. (Part no.
MTKOG)
Do not obstruct, or attempt to conceal, the vent
termination. These actions will affect the operation
of the fireplace, and may be hazardous.
In heavy snow areas, take extra care to prevent snow
buildup from obstructing the vent termination.
Vent Installation
Cautions:
Cautions:
Cautions:
Cautions:
Cautions:
Part No. XG0130
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