Installing The Gas Line; Vent Installation; Vent Terminations - Montigo B34DV Installation, Operation & Maintenance Manual

Installing The Gas Line

The gas line must be installed before finishing the B-Series DV-2
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 shut-off 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 shut-off 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.
WARNING
When installing the replace - gas lines, ttings, accesso-
ries or any other objects cannot impede the proper
movement of the door buckles.
Part No. XG0160 - 151125
Installation

Vent Installation

Use only certified Montigo vent components. (Use of other parts
will void the Montigo warranty, and may impede the operation of the
fireplace.)
Connect all vent sections using a minimum of three sheet metal screws
on the outer pipe flue.
Vent terminations must not be recessed in walls or siding
Ensure all runs are supported with a minimum of 3 supports per 10' of
venting.
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 for a flex section with no vertical rise is 3 feet.
Flex vent sections over 3 feet must fall within the limits set by the
venting graph and must have a minimum vertical rise of 3 inches per
foot of flex.
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
6, below, shows typical fireplace locations and the venting options
they provide.
For a more detailed diagram of allowed termination locations, see
Appendix A.
Figure 6. 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. PTKOG).
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.
Use Montigo Vinyl Heat Shield (Part no. VSS) when using

on applications with vinyl siding to guard against possible
damage.
B-Series DV-2 Gas Fireplace
Cautions:
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