Montigo H34D Installation Operation & Maintenance
Installation
Operation &
Maintenance
H34D
Gas Fireplace
Warning:
Improper installation, adjustment,
alteration, service or maintenance can
cause injury or property damage. Refer to
this manual. For assistance or additional
information consult a qualified installer,
service agency or the gas supplier.
What To Do If You Smell Gas:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone. Follow the gas
supplier's instructions.
• If you cannot reach your gas supplier, call the fire department.
For Your Safety:
Do not store or use gasoline
or other flammable vapors
and liquids in the vicinity of
this or any other appliance.
■ Check local codes
and read all
instructions prior to
installation.
■ Leave this manual
with the owner.
H34D Gas Fireplace
Table Of Contents
Introduction ............................................................................2
Installation
Installing and Framing the Fireplace ............................... 3
Installing the Gasline....................................................... 4
The Remote Switch ........................................................4
Direct Vent Installation ....................................................4
General Venting Requirements ..........................4
Terminations...................................................... 5
Converting to Top or Rear Vent model...............6
Venting for Top Vent models .............................. 7
Venting for Rear Vent models...........................10
Construction around the fireplace
Facing .............................................................12
Mantels and Surrounds....................................12
Wiring .......................................................................13
Installing Optional Fans.................................................13
Removing and Installing the Door................................. 13
Installing the Logset ......................................................14
Installing the Horizontal Trim .........................................14
Operation ........................................................................15 - 17
Maintenance ...................................................................17 - 18
Warranty ................................................................................ 19
Appendix
A. Termination Locations .............................................. 20
B. Mobile Home Approved Models............................... 21
CAUTIONS
Due to its high operating temperatures, the appliance should
be located out of traffic & away from furniture and draperies.
Children and adults should be alerted to the hazards of
the high surface temperature, which could cause burns
or clothing ignition.
Young children should be carefully supervised when
they are in the same room as the appliance.
Clothing or other flammable materials should not be
placed on or near the appliance.
Introduction
Thank You for choosing a Montigo Gas Fireplace.
About this Fireplace:
The H34D is an 18,000 BTU fireplace with a pan-style burner and
glowing embers. This fireplace can be converted to both a Top Vent or
Rear Vent application, and it is available in two models.
H34D;
Top or Rear Vent, Millivolt Pilot
H34D-I; Top or Rear Vent, Intermittent Pilot (HSI)
H34D-MH; Top or Rear Vent, Mobile Home
For Mobile Home Approved Models See Appendix B
The H34D is rated for Natural Gas at 18,000 BTU/H (5.28 Kilowatts)
Input or Propane at 18,000 BTU/H (5.28 Kilowatts) Input.
How to use this manual:
This manual covers installation, operation and maintenance. Lighting,
operation and care of this fireplace can be easily performed by the
homeowner. However, all installation and service work should be
performed by a qualified or licensed installer, plumber, or gasfitter who
is qualified or licensed by the state, province, region, or governing
body in which the appliance is being installed.
This manual covers all models and unless otherwise specified, the
designation H34D refers to all models. Sections which are specific to a
particular model are marked with a symbol, plus the appropriate model number.
Warranty and Installation Information:
The Montigo warranty will be voided by, and Montigo disclaims any
responsibility for, the following actions:
Modification of the fireplace and/or components including Direct-Vent
assembly or glass doors.
Use of any component part not manufactured or approved by
Montigo in combination with this Montigo fireplace system.
Installation other than as instructed in this manual.
Consult your local Gas Inspection Branch on installation requirements for
factory-built gas fireplaces. Installation & repairs should be done by a
qualified contractor.
Installations in Canada must conform to the current CAN/CGA B-
149.1 and .2 Gas Installation Code and local regulations. If the optional
air-circulating fan kit is installed, it must be electrically grounded in
accordance with CSA C22.1 Canadian Electrical Code Part 1 and/or
Local Codes.
Installations in the USA must conform to local codes, or in the
absence of local codes to the National Fuel Gas Code, ANSI Z223.1-
1988. If the optional air-circulating fan is installed, it must be grounded in
accordance with local codes or, in the absence of local codes, with the
National Electrical Code, ANSI/NFPA 70-1987.
Page 2
Part No. XG0130
Installation
H34D Gas Fireplace
Installing The Fireplace Shell
The fireplace may be installed in any location that maintains proper
clearances to air conditioning ducts, electrical wiring and plumbing.
Safety, as well as efficiency of operation, must be considered when
selecting the fireplace location. Try to select a location that does not
interfere with room traffic, has adequate ventilation, and offers an
accessible pathway for Direct Vent installation. Refer to page 4 - Vent
Installation for more information.
The fireplace dimensions are shown below:
Top View
Framing
* When sheetrock is
not used behind the
fireplace, framing
depth may be
reduced to 16"
Figure 2. Framing dimensions.
Front View
Figure 1. Fireplace dimensions.
Side View
Clearances
These clearances apply to all dimensions except the framed opening,
where the clearance to combustibles is 0". The H34D clearances to
combustible materials are:
Top - Rear Vent* 9"
Top - Top Vent 17 1/2"
Back 2"
Sides 1"
Floor 0"
Mantle** 4"
* Clearance from the top of the fireplace to a combustible
ceiling within the fireplace enclosure.
** Refer to page 11.
Unprotected combustible walls which are perpendicular to the fireplace
opening, must not project beyond the shaded area shown in Figure 23.
For protection against freezing temperatures, it is recommended that
outer walls of the chase be insulated with a vapour barrier. This will
reduce the possibility of a cold-air convection current on the fireplace.
Figure 3. Minimum Corner framing dimensions, using a 45° elbow.
When installing a shelf over the top of the fireplace, the following
guidelines must be adhered to: For Rear Vent applications the minimum
clearance from the top of the fireplace to a shelf is 11". For Top Vent
applications, the minimum clearance is 17 1/2". (Minimum
2" clearance must still be maintained around the vent pipes.)
Top VentRear Vent
Figure 4. Framing for shelves over the fireplace.
WARNING:
When this appliance is installed directly on carpeting, tile
or any combustible material other than wood flooring, it
must be installed on a metal or wood panel extending the
full width and depth of the appliance.
Part No. XG0130
Page 3
H34D Gas Fireplace
Installation
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.
Vent 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)
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.
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.
Cautions:Cautions:
Cautions:
Cautions:Cautions:
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.
Page 4
Part No. XG0130
Installation
H34D Gas Fireplace
Installing Terminations with Built-In Frames
11
MTO-3F
11
1. Frame the termination opening to 11" x 11".
2. Fasten the termination to the studs using a minimum of 4 screws.
Installing Terminations with MSR Frames
12
MSR
Installing Heat Guards over Terminations
MTKOG
1. Ensure that the two long mounting brackets are facing the bottom of
the termination. (See inset). This will provide more heat protection
at the top of the termination, where temperatures are highest.
2. Attach to the faceplate of the termination using four sheet metal screws.
Installing The Standoffs
To avoid elevated mantel temperatures, all H38DF gas fireplaces
are required to have the supplied standoffs installed.
The fireplace is supplied with two standoffs. Bend and install these
standoffs on top of the fireplace ensuring that the height of the standoff
maintains a 6" clearance.
12
1. Frame the termination opening to 12" x 12".
2. Fasten the termination to the studs using a minimum of 4 screws.
MTO-3
Installing Terminations with MOSR Frames
MOSR
MTO-3
1. Frame the termination opening to 12" x 12".
2. Fasten the MOSR frame to the interior side of the studs using a
minimum of 4 screws.
3. Insert the termination into the MOSR frame as shown here, and
attach by screwing through the four pilot holes in the termination.
1212
Figure 6b. Installing the standoff's.
12
Part No. XG0130
Page 5
H34D Gas Fireplace
Installation
Converting to Top Vent/ Rear Vent
H34DL Top Vent
Use the following instructions to convert an H34DL for Top Vent use:
1. Install the 4" inner flue cap on the rear flue outlet and secure the
cap in place with five screws, as shown in figure 7a.
2. Install the 7" outer flue cap on the rear flue outlet, and secure it
with five screws, as shown in figure 7a.
H34DL Rear Vent
Use the following instructions to convert an H34DL for Top Vent use:
1. Install the 4" inner flue cap on the top flue outlet and secure the
cap in place with five screws, as shown in figure 8a.
2. Install the 7" outer flue cap on the top flue outlet, and secure it
with five screws, as shown in figure 8a.
Figure 7a. Flue cap installation for Top Vented fireplace.
3. Install the flue gasket material and flue cover plate on the rear
vent outlet . Fasten the plate with four screws,as illustrated below.
4. Install the 4" inner flue collar and the 7" outer flue collar in place
on the top vent outlet using 5 screws, as illustrated below.
Figure 8a. Flue cap installation for Rear Vented fireplace.
3. Install the flue gasket material and flue cover plate on the top vent
outlet. Fasten the plate with four screws,as illustrated in figure 8b.
4. Install the 4" inner flue collar and the 7" outer flue collar in place
on the rear vent outlet using 5 screws, as illustrated below.
Figure 7b. Flue collar installation for Top Vented fireplace.
Page 6
Figure 8b. Flue collar installation for Rear Vented fireplace.
Part No. XG0130
Installation
Top Vent Venting Runs
Before you install any venting, you must determine whether the venting
run will be acceptable. Unacceptable venting can affect the fireplace's
combustion.
the maximum vertical vent run for a Top Vented unit is 32 feet
The Venting Graph
Measure the vertical height from the fireplace hearth to the centre of the
termination and the horizontal run from the from the fireplace flue collar to
the wall flange of the termination. Plot on the Venting Graph (Fig. 9) with
an 'X'.
If the 'X' falls on or above the top boundary of the shaded area, the
installation is acceptable.
Example A: (Acceptable Installation)
If the vertical dimension from the hearth is 108", and the horizontal
run to the wall flange of the vent termination is 180", this would be
an acceptable installation.
Example B: (Acceptable Installation)
If the vertical dimension from the hearth is 48" and the horizontal
run to the wall flange of the vent termination is 72", this would be
an acceptable installation.
Example C: (Unacceptable Installation)
If the vertical dimension from the floor of the fireplace is 60" and
the horizontal run to the wall flange of the vent termination is 144",
this would NOT be an acceptable installation.
H34D Gas Fireplace
Available Top Vent Components
The following venting components are available for the H34D Top
Vent:
A - Termination MTO-3 (3" length)
MTO-3F (3" length)
B - Stucco Kits MSR (stucco frame)
MOSR (stucco can)
BSR (brick can)
C - Flex sections MFL-1 (12" section)
MFL-2 (24" section)
MFL-3 (36" section)
MFL-4 (48" section)
D - Rigid sections MEXT-1 (12" m/f section)
MEXT-2 (24" m/f section)
MEXT-3 (36" m/f section)
MEXT-4 (48" m/f section)
E - Elbows
NOTES: All dimension lengths for vertical or horizontal runs are
measured from center of the vent pipe.
Venting runs must fall within the limits set by the venting
graph (see Figure 9).
MEL-90MM (m/m 90° elbow)
MEL-90FF (f/f 90° elbow)
MEL-90FM (f/m 90° elbow)
Figure 9. Venting Graph.
Part No. XG0130
Page 7
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