Montigo P42DF Prestige Series Instruction Manual

®
C US
Read and understand this manual. Improper installation, adjustment, alteration,
service or maintenance can cause serious injury, property damage or even death.
For assistance or additional information consult a qualified installer, service
agency or the gas supplier.
DANGER
Glass doors on gas fireplaces are extremely hot while the fireplace is on and
remain hot even after the fireplace has been turned off. Safety screens are
available and can reduce the risks of severe burns. Please keep children away
from the fireplace at all times.
CAUTION
Do not store or use gasoline or any other flammable vapors and liquids in the vicinity of
this or any other gas burning appliance. A fire or explosion my occur causing serious
injury, property damage or even death.
WARNING
Installer: Leave this manual with the appliance. Do not remove.
Consumer: Retain this manual for maintenance and future reference. Do not Discard.
NOTICE
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.
DANGER
Irritant
Cutting
Watch your step
Slippery floor
High temperatures
Glass hazard
Danger of suffocation
High voltage
Toxic
Flammable materials
Corrosive
Fork lift trucks
Danger overhead crane
Explosion risk
Oxidising
Danger of death
Biohazard
Laser Radiation
Danger of entrapment
Hot surface
General Warning
Blank
Gas bottles
Watch for
falling objects
Electricity
Danger for cutter
Entrapment hazard
Battery hazard
Rotating parts
Low temperature
Strong magnetic field
Optical radiation
Non ionizing
radiation
Radiation
Hazardous to the
Environment
Danger of harming
your hands
Irritant
Cutting
Watch your step
Slippery floor
High temperatures
Glass hazard
Danger of suffocation
High voltage
Toxic
Flammable materials
Corrosive
Fork lift trucks
Danger overhead crane
Explosion risk
Oxidising
Danger of death
Biohazard
Laser Radiation
Danger of entrapment
Hot surface
General Warning
Blank
Gas bottles
Watch for
falling objects
Electricity
Danger for cutter
Entrapment hazard
Battery hazard
Rotating parts
Low temperature
Strong magnetic field
Optical radiation
Non ionizing
radiation
Radiation
Hazardous to the
Environment
Danger of harming
your hands
Irritant
Cutting
Watch your step
Slippery floor
High temperatures
Glass hazard
Danger of suffocation
High voltage
Toxic
Flammable materials
Corrosive
Fork lift trucks
Danger overhead crane
Explosion risk
Oxidising
Danger of death
Biohazard
Laser Radiation
Danger of entrapment
Hot surface
General Warning
Blank
Gas bottles
Watch for
falling objects
Electricity
Danger for cutter
Entrapment hazard
Battery hazard
Rotating parts
Low temperature
Strong magnetic field
Optical radiation
Non ionizing
radiation
Radiation
Hazardous to the
Environment
Danger of harming
your hands
Irritant
Cutting
Watch your step
Slippery floor
High temperatures
Glass hazard
Danger of suffocation
High voltage
Toxic
Flammable materials
Corrosive
Fork lift trucks
Danger overhead crane
Explosion risk
Oxidising
Danger of death
Biohazard
Laser Radiation
Danger of entrapment
Hot surface
General Warning
Blank
Gas bottles
Watch for
falling objects
Electricity
Danger for cutter
Entrapment hazard
Battery hazard
Rotating parts
XG0195 030712
P42DF Indoor
Prestige Series
Residential
Fireplace
Installation & Maintenance Manual
Canadian Heating Products Inc. Langley, BC V4W 4A1 | Montigo Del Ray Corp. Ferndale, WA 98248

Safety Alert Key
Introduction .................................................................................3
Installation
Before you start .................................................................................4
Installation Checklist ...............................................................................4
Section 1: Installation Overview and Product Dimensions .....................5
Section 2: Framing & Clearances ...........................................................6
Framing the Fireplace .............................................................................6
Clearances .................................................................................6
Section 3: Venting .................................................................................7
Notes for Planning Venting ......................................................................7
▪ Section 3-1: Converting to Rear Vent ..................................................7
▪ Section 3-2: Installing PVTK-1 ..............................................................8
▪ Section 3-2-1 Venting Layout ..........................................................8
▪ Section 3-2-2: Venting Components ...............................................9
▪ Section 3-3: Installing Wall Mounted Direct Vent Termination ............10
▪ Section 3-3-1: Venting Layout Wall Mounted Termination ........11-13
▪ Section 3-3-2: Venting Components ..............................................14
▪ Section 3-3-3:Heat Shields ............................................................15
Section 4: Wiring ...............................................................................16
▪ SIT - IPI Wiring ........................................................................16
▪ Fan & Lights Wiring ................................................................16
Section 5: Installing the Gas Line .........................................................17
Section 5-1: Fuel Conversion ...............................................................17
Section 5-2: Gas Pressure ...................................................................17
Section 5-3: Gas Connection ...............................................................17
Section 6: Finishing ..............................................................................18
▪ Finishing Around the Fireplace .....................................................18
▪Fireplace Facing ............................................................................18
▪ Installing the Nailing Flange Extension .........................................18
Section 7: Removing the door ..............................................................19
Section 8:Installing the Accessories .....................................................20
▪ Installing the Firestones ................................................................20
Operation ............................................................................21
▪ For Your Safety - READ BEFORE LIGHTING ..............................21
▪ Lighting Instructions ......................................................................21
▪ Turn Off Gas to Appliance ............................................................21
Maintenance ........................................................................22 - 24
▪ General ...............................................................................22
▪ Cleaning ...............................................................................22
▪ Replacing Light Bulbs ...................................................................23
▪ Troubleshooting ............................................................................24
▪ Replacement Parts List ................................................................24
Appendix
A. Termination Locations ...............................................................25
B. Warranty ...............................................................................26
C. State of Massachusetts. ...........................................................27
Page 2
You must read and understand this manual prior to installation, operation or
troubleshooting this appliance. Please retain this owner’s manual for furure reference
and maintenance.
NOTICE
Table of Contents
P42DF* Indoor Gas Fireplace
XG0195 - 030712

MODEL Natural Gas Liquid Propane Gas Rating (BTU hr) Linear Burner w/ Glass media Accessories SIT Electronic Ignition
P42DFNI X 32,000 X X
P42DFLI X 32,000 X X
Page 3
Indicates a hazardous situation which, if not
avoided, WILL result in death or serious
injury or property damage.
Indicates a hazardous situation which, if not
avoided, COULD result in death or serious
injury or property damage.
Indicates a hazardous situation which, if not
avoided, WILL result in minor or moderate
injury.
Address practices that are important, but
not related to personal injury
DANGER WARNING
CAUTION NOTICE
P42DF* Indoor Gas Fireplace
Safety Alert Key
Introduction
XG0195 -030712
INTRODUCTION
Congratulations on your purchase of a Montigo Fireplace.
With over 30 years of experience, Montigo is committed to providing you
with a gas replace that is not only a beautiful addition to your space, but
that is also designed and manufactured to the highest safety, reliability
and engineering standards.
We strongly encourage you to read and carefully follow the instructions
laid out in this Installation, Operation and Maintenance Manual and retain
it for your future reference. Pay special attention to all cautions, warnings,
and notices throughout this manual intended to ensure your safety.
This manual covers installation, operation and maintenance. Lighting,
operation and care of this replace can be easily performed by the
homeowner. All installation and service work should be performed by
a qualied or licensed installer, plumber or gas tter as certied by the
state, province, region or governing body where the replace is being
installed.
This installation, operation and maintenance manual is applicable to
the models described to the right. Refer to your rating plate to verify
included options. Warranty and Installation Information: (See Appendix B)
The Montigo warranty will be voided by, and Montigo disclaims any
responsibility for, the following actions:
► Modication of the replace 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 replace system.
► Installation other than as instructed in this manual.
Consult your local Gas Inspection Branch on installation requirements
for factory-built gas replaces. Installation & repairs should be done by
a qualied contractor.
WARNING
Hot glass will cause
burns. Do not touch
glass until unit is cooled.
Never allow children to
touch glass.
Irritant
Cutting
Watch your step
Slippery floor
High temperatures
Glass hazard
Danger of suffocation
High voltage
Toxic
Flammable materials
Corrosive
Fork lift trucks
Danger overhead crane
Explosion risk
Oxidising
Danger of death
Biohazard
Laser Radiation
Danger of entrapment
Hot surface
General Warning
Blank
Gas bottles
Watch for
falling objects
Electricity
Danger for cutter
Entrapment hazard
Battery hazard
Rotating parts
Low temperature
Strong magnetic field
Optical radiation
Non ionizing
radiation
Radiation
Hazardous to the
Environment
Danger of harming
your hands

IMPORTANT MESSAGE: SAVE THESE INSTRUCTIONS
The P42DF* Direct Vent replace must be installed in accordance with
these Instructions. Carefully read all the Instructions in this manual
rst. Consult the Local Gas Branch to determine the need for a permit
prior to starting the installation. It is the responsibility of the installer to
ensure this replace is installed in compliance with the manufacturers
instructions and all applicable codes.
BEFORE YOU START:
Due to high operating temperatures, this 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.
CAUTION
When this appliance is installed directly on 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 or a fire will occur causing serious injury, property damage or
even death.
DANGER
Installation Checklist
Determine the desired install location of your replace.
See Section 1, Dimensions on Page 5, and refer to the Framing
Section 2 for details.
Select the location of your termination and resulting vent run.
Your selected termination location must be the highest point
in the Direct Vent installation.
Should it be impossible to meet the venting requirements laid
out in Section 4: Venting, please contact Montigo regarding the
use of a Montigo Power Vent.
Lay out the Vent run; calculating the required elbows and straight
runs of 5"/8" flex or rigid pipe.
Layout Electrical Requirements Refer to Section 5: Wiring, for
Details.
Refer to Section 6: Installing the Gas Line, for details on the
gas connection and access.
Refer to local codes and guidelines for installation requirements.
Installation and repairs should be done by a qualied
contractor and must conform to:
• Installations in Canada must conform to the current CAN/CGA
B-149.1 and .2 Gas Installation Code and local regulations. .................
• 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 .
• See Appendix C for installation within the State of
Massachusetts. This replace must comply with NFPA-54 Chapter 10.
Installation and repairs should be done by an authorized gas fireplace service technician.
The appliance should be inspected before use and at least annually by a professional. More
frequesnt cleaning may be required due to exessive lint from carpeting, bedding material,
etc. It is imperative that control compartments, burners and circulating air passageways of
the fireplace are kept clean.
NOTICE
Page 4
P42DF* Indoor Gas Fireplace
XG0195 - 030712
Installation

Figure 1. Fireplace dimensions, (ALL Models, shown in Table on Page 3).
Please review the Installation Checklist on Page 4 for general information
on preparing for a successful installation of your replace.
The P42DF* replace may be installed in any location that maintains
proper clearances to air conditioning ducts, electrical wiring and plumbing.
Safety, as well as efciency of operation, should be considered when
selecting the replace location. Try to select a location that does not
interfere with room trafc, has adequate ventilation and offers an
accessible path for Direct Vent installation.
The replace dimensions are shown below:
Top View
Front View
Side View
5"
8"
8"
42"
21 1
4
"
34 5
8
"
30 1
2
"
27 1
2
"
39 1
2
"
19"
42 3
4
"
42"
6 1
4
"
Page 5
P42DF* Indoor Gas Fireplace
XG0195 -030712
Installation
Section 1: Installation Overview and Product Dimensions

1). Frame in the enclosure for the unit with framing materials. The
framed opening for the assembled replace is 42" wide, x 42" high x
21 1/4" deep, see Figure 2 .
NOTE: When constructing the framed opening, please ensure
there is access to install the gas line when the unit is installed.
See Figure 2.
Figure 2. Framing dimensions, (Straight wall & Corner
Installation).
Clearances
When installing a shelf over the top of the replaces, the following
guidelines must be adhered to:
For Rear Vent applications, the minimum clearance is 0" from the insulation
jacket to a wall, or any combustible materials, and 9" clearance from the
top of the replace to the underside of any combustible shelf materials.
For Top Vent applications, the minimum clearance is 0" from the
insulation jacket to a wall, or any combustible materials, and 17 1/2" to
the underside of any combustible shelf materials.
* (0" clearance from insulation jacket)
* When sheetrock is not used behind the
replace, framing depth 21 1/4" may be
reduced by 5/8".
Figure 5. Non Combustible Framing for Top Vent or Rear
Vent, with alcove.
Figure 4. Combustible Framing for shelves over the replace,
Top vent.
Figure 3. Combustible Framing for shelves over the replace,
Rear vent. Note: Rear vent available for Natural Gas only.
MODEL Top - Rear vent * Top - Top vent Back * Sides * Floor Mantel
P42DF* 9" 17 1/2" 0" 0" 0" 4"
42”
9”
34 1/2”
Combustible Header
Combustible Shelf
27 1/2”
12”
max.
Non Combustible
Stud 1/2” Above Top
RHS102
Non-Combustible
Materials Only
MIN
96”
12”
door
opening
3”
Rear
Vent
Ceiling
Floor
Alcove
area over
Fireplac e
Top Vent
N.
G
.
&
L.P.
12”
max. Non-combustible
header
Min 1”
7 5/8”
2
11/4”
42
”
42”
Noncombustible
Stud
35”
84 1/2”
0" c
l
earance
to corners only
42”
59 3/4”
40 1/2”
MEL Short
90° elbow
50 1/2”
17 1/2”
Combustible Header
Combustible Shelf
RHS102
Page 6
P42DF* Indoor Gas Fireplace
XG0195 - 030712
Installation
Section 2: Framing & Clearances

Figure 6. Flue cover and collar removal, Top Vented
replace.
Figure 7. Flue cover and collar installation, Rear Vented
replace.
Section 3-1: CONVERTING TO REAR VENT
Use the following instructions to convert an P42DF* for Rear Vent use:
1. Remove the Rear ue cover and gasket (5" and 8") on the ue
outlet, as shown in Figure 7.
2. Next, Remove the Top ue collar's (5" and 8") on the ue outlet,
as shown in Figure 7.
3. Install the (removed) Rear ue cover and gasket material, to the
Top vent outlet. Fasten the cover with included hardware, as
illustrated Figure 8.
4. Install the (5" and 8") collars to the rear vent outlet using the
included hardware, as illustrated Figure 8.
5” Inner Flue Collar
8” Outer Flue Collar
Flue Gasket
Flue Cover Plate
Flue Gasket
Flue Cover Plate
8” Outer Flue Collar
5” Inner Flue Collar
Montigo supplies a variety of direct venting and termination options.
The direct vent termination location MUST be selected such that
it is the highest point in the venting assembly. It should also be
selected such that it provides the shortest vent run possible. Should it
be impossible to ensure that the termination is the highest point or to
meet the venting guidelines laid out below please contact your Montigo
dealer to discuss power venting options.
NOTES FOR PLANNING VENTING:
Venting can originate from the unit through the top or through the rear
Venting can terminate through the roof or through an exterior wall.
Refer to Appendix A - Termination Locations to ensure the planned
termination location is acceptable.
Once the termination location has been established, refer to the
appropriate section below for installation details
All replaces shipped from the factory are Top vent.
See Section 3-1 for converting the unit from top vent to rear vent.
Page 7
P42DF* Indoor Gas Fireplace
XG0195 -030712
Installation
Section 3: Venting

Section 3-2: INSTALLING A ROOF MOUNTED
DIRECT VENT TERMINATION (PVTK-1)
This section applies to installations where the direct vent termi-
nation will be roof mounted.
Section 3-2-1: VENTING LAYOUT
Selection of components and details of venting lay out should
adhere to the following guidelines:
The maximum termination point is 32’ above the replace (NOTE:
if the maximum termination height is used, the ame pattern
may be affected).
The Vertical termination must be a minimum 2’ higher than where
the termination exits the roong materials, (asphalt shingles,
cedar shakes, etc). This distance should be measured from the
high side of the roof slope where the ue ashing intersects the
roong materials. (see Figures 8 to 8c *).
Termination location must be a minimum 6’ from a mechanical
air inlet.
Termination location must be a minimum 18” from a parapet wall.
A maximum of two offsets (each offset is made up of 2-90°
bends) may be made.
Install a restop at any location where venting passes through
combustible materials and construction.
Utilize support straps, or support plates, and rings (as required)
to meet acceptable building practices.
Install all roof ashing and storm collars as shown.
Figure 8. Top vent, Roof mounted termination with no offset in vent run.
Figure 8a. Top vent, Roof mounted with 1 offset (1 offset= two 90°
bends).
Figure 8b. Top vent, Roof mounted with 2 offsets (1 offset= two 90°
bends).
Roof mounted Terminations
The following details are some possible congurations for Roof mounted
terminations. See below.
Support ring
Support plate
Firestop
32’ max.
2’ min.
PVTK1
Termination
Support ring
Support plate
Firestop
32’ max.
2’ min.
Obstacle
PVTK1
Termination
Support straps or
support plate & ring
2’ min.
Firestop
Firestop
2’
Firestop
3
2’ max Support plate
& ring
Obstacle
PVTK1
Termination
Page 8
P42DF* Indoor Gas Fireplace
XG0195 - 030712
Installation

Figure 8c. Rear vent, Roof mounted venting (1 = 90° bend).
Section 3-2-2: VENTING COMPONENTS
Select from the following components and associated Montigo part
numbers for installation of a Roof Mounted Termination. Use only
Montigo Vent Components. Use of non-Montigo parts will void the
warranty and may impede operation of the replace.
Support ring
Support plate 32’ max
Termination
12”
Max.
Connection and installation of the vent components should adhere to
the following guidelines:
Use any combination of rigid and Flex pipe as required.
Flex sections may be stretched up to 50% of their total length
(e.g. a 24” section maybe stretched to 36”).
Connect all vent sections using a minimum of three sheet
metal screws on the outer pipe ue.
Ensure the pipe ends male to female slide in a minimum of
1 1/2” of overlap.
Ensure all runs are supported with a minimum of 3 supports
per 10’ of venting.
When hanging/ supporting venting, ensure that 1” clearance
is maintained on sides and bottom of vent runs and 2” above
horizontal vent runs to any combustible material.
Ensure when cutting sections of rigid pipe to maintain integrity
of internal supports.
Place the springs, supplied with the pipe kit, between the
outer and inner pipes to keep the pipes separate and avoid
any possible hot spots.
Montigo recommends the use of a ex section for the nal pipe
connected directly to the replace offering greater exibility of
installation and absorption of movement.
When penetrating a combustible ceiling, a ceiling restop
must be used.
Montigo recommends that all exterior corners and joints be
sealed with exterior caulking however we encourage you to
consult your Building Envelope Engineer or Waterproong
Consultant for further recommendations.
A - Termination PVTK-1
B - Flex Sections PFL - 1 (12" f/f Section)
PFL - 18 (18" f/f Section)
PFL - 2 (24" f/f Section)
PFL - 3 (36" f/f Section)
PFL - 4 (48" f/f Section)
PFL - 6 (72" f/f Section)
C - Rigid Sections PXT - 5 (5" f/f Section)
PXT - 10 (10" f/f Section)
PEXT - 1 (12" f/f Section)
PXT - 20 (20" f/f Section)
PEXT - 2 (24" m/f Section)
PEXT - 3 (36" m/f Section)
PEXT - 4 (48" m/f Section)
PEXT - 6 (72" m/f Section)
D - Support Ring &
Plate
PSPXT-8
E - Firestop PS-8
F - Roof Flashing PRF-7 (1/12 - 7/12 pt.)
PRF-12 (7/12 - 12/12 pt.)
PVTK1
PEXT Sections
Page 9
P42DF* Indoor Gas Fireplace
XG0195 -030712
Installation

1
12”
2”
12”
12”
Section 3-3: INSTALLING A WALL MOUNTED
DIRECT VENT TERMINATION
This section applies to installations where the direct vent termination
will be wall mounted.
1). Installation of Termination with built in frame
A Termination with a Built-In Frame is installed during framing of a structure.
1. Frame the termination opening to 11" x 11".
2. Install exterior sheathing to the structure framing.
3. Fasten the termination to the sheathing using a minimum of 4 screws.
MSR Frame
PTO-4 (5"/8")
Termination
PTO-4F (5"/8")
Termination
Figure 9. Installing a PTO4-F termination.
Figure 9a. Installing a PTO termination with the MSR frame.
Figure 9d. Installing the VSS Vinyl Shield.
5). Installation of a termination shield for Vinyl Siding
The VSS Termination shield is installed when the exterior of a structure
is clad with Vinyl siding. It is placed directly above, and on-center with
the termination.
2). Installation of termination frame at time of framing
Terminations with a MSR frame allow the installation of the frame prior
to installation of the termination.
1. Frame the termination opening to 12" x 12".
2. Secure the MSR Frame to the exterior sheathing of the structure.
3. Fasten the termination to the MSR Frame using a minimum of 4 screws.
Figure 9b. Installing a PTO termination with the BSR frame.
3). Installation of termination frame at time of framing in Masonry
Terminations with a BSR frame allow the installation of the frame in
masonry prior to the installation of the termination
1. Frame the BSR opening to 12" x 12".
2. Secure the BSR Frame to the exterior sheathing of the structure.
3. Fasten the termination to the BSR Frame using a minimum of 4 screws.
1. Frame the MOSR opening to 12" x 12".
2. Fasten the MOSR frame to the interior side of the studs, concrete,
or nished wall construction using a minimum of 4 screws.
3. Insert the termination into the MOSR frame as shown here, (from
the inside) and attach to the MOSR by installing a min. quantity of
4 bolts into the threaded nuts on the MOSR Frame.
4). Installation of termination from inside structure
A Termination with a MOSR Frame is installed from the inside of the
structure. These are commonly used in high-rise construction.
MOSR Frame
PTO-4 (5"/8")
Termination
Figure 9c. Installing a PTO termination with MOSR frame.
BSR Frame PTKOG (5"/8")
Installing Heat Guards over Terminations is recommended in installations
where the termination is located within 7' feet above grade, or above
a pedestrian walkway, and may be Required by code in Public areas.
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.
Figure 9e. Installing a PTO termination heat guard.
1
1”
11”
Framing
Exterior
Sheathing
Fastening Hardware,
minimum 4-screws
Framing
Exterior
Sheathing
Fastening Hardware,
minimum 4-screws
PTO-4 (5"/8")
Termination
Framing
Exterior
Sheathing
Fastening Hardware,
minimum 4-screws
12”
12”
Fastening Hardware,
minimum 4-screws
Framing, con-
crete or other
materials
Exterior Sheath-
ing, concrete or
other materials
Exterior Vinyl
siding
PTO-4 (5"/8")
Termination
VSS Vinyl shield
Page 10
P42DF* Indoor Gas Fireplace
XG0195 - 030712
Installation

The Venting Graph: P42DF*
Measure the vertical height from the replace hearth to the centre of
the termination and the horizontal run from the replace ue collar to
the wall ange of the termination. Plot on the Venting Graph Figure 10
or 10a 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 120" and the horizontal
run to the wall ange of the vent termination is 144", this would be
an acceptable installation.
Example B: (Unacceptable Installation)
If the vertical dimension from the hearth is 36" and the horizontal
run to the wall ange of the vent termination is 84", this would not
be an acceptable installation.
Example C: (Unacceptable Installation)
If the vertical dimension from the oor of the replace is 60" and
the horizontal run to the wall ange of the vent termination is 144",
this would not be an acceptable installation.
Figure 10b. Top Vented, wall mounted installation with 1 elbow (1
one 90° bend). The vent run must comply with Venting Graph for
Top vent, wall mounted terminations, Figure 10 and 10a.
Figure 10d. Top Vented, wall mounted Multi-elbow installation. See
Venting Graph for Top vent, wall mounted terminations, Figure 10.
Section 3-3-1: VENTING LAYOUT: Wall mounted termination.
Selection of components and details of venting layout should adhere
to the following guidelines:
Vent terminations must not be recessed in walls or siding.
All through-the–wall terminations within 4’ of the replace must
have a Montigo Heat Shield (RHS101) installed. See Section
3-3-3.
All through-the-wall terminations beyond 4' of the replace must
have a Montigo Heat Shield (RHS8) installed. See Section 3-3-3.
Once the proposed venting layout has been determined refer to
Figure 10 or 10a to ensure the layout is acceptable.
Notes Wall Mounted Terminations: Top Vent
All measurements 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 10 or 10a.
Wall mounted Terminations
The following details are some possible congurations for Wall mounted
terminations. See below.
Solid Section
Flex Section
Hearth
30”min
15’foot Max.
RHS8 Heat
Shield
Termination
Exterior
Wall
8' MIN AT MAX
Horizontal
Figure 10. P42DF* LP Top Vent Venting Graph for wall mounted
terminations.
Figure 10a. P42DF* NG Top Vent Venting Graph for wall mounted terminations.
WARNING:
An inspection of the explosion relief appers and door MUST be
made prior to lighting the replace. A faulty seal on the door gasket ...
and/or explosion ports will result in products of combustion leaking
into the living space and may result in carbon monoxide poisoning.
12”
53”
A
C
B
If your installation does not fall
within the venting graph para-
meters, please contact Montigo
for Power Venting options.
Unacceptable vent run
within shaded area.
Acceptable vent run
within non-shaded area.
44”
40 1/2”
A
C
B
If your installation does not fall
within the venting graph para-
meters, please contact Montigo
for Power Venting options.
Unacceptable vent run
within shaded area.
Acceptable vent run
within non-shaded area.
RHS8 Heat
Shield
Termination
Hearth Exterior
Wall
40 1/2" Min. (NG)
Flex
Flex section
53 Min. (LP)
44" Min. (NG)
12 Min. (LP)
Page 11
P42DF* Indoor Gas Fireplace
XG0195 -030712
Installation

Figure 11. Corner installation.
Figure 12. Flex installation. (NG Models Only)
45° Corner Installation.
Attach an PEL-45 (45° elbow) directly onto the ue collar. Cut the PXT-
20 to suit, and attach it to the PEL-45. Slide the replace into position
and attach to the termination.
45° or less Corner Installation.
Use an PTO-3 termination and an PFL-1 or PFL-2 (12" or 24"
compressed length) and a frame, if appropriate. Flex may be turned
to obtain desired degree of angle required but must not exceed 45°.
Note: Through the wall venting kits are also available for both
the Straight and the Corner Installation. The Kit includes a heat
shield, a PFL-1/2 (f/f) exible pipe, and a termination with or without
a mounting frame of PFL-2
PEL-45 Elbow
PEL-90 Elbow
PXT-18
IMPORTANT:
Corner Installation is available for P42DF
Top Vent Units Only. Ensure minimum
Vertical Venting Height of 48" is maintained
in corner installations.
Page 12
P42DF* Indoor Gas Fireplace
XG0195 - 030712
Installation

Figure 13. Rear Vent Venting Graph for NG and LP wall mounted
terminations.
Figure 13c. Rear Vented, wall mounted Multi-elbow termination
installation. Installation for P42DF* must have a minimum vertical rise
of 46".The vent run must comply with the Venting Graph for Rear vent,
wall mounted terminations, Figure 13.
Figure 13b. Straight run, Rear Vented, wall mounted termination for
P42DF*,
Notes Wall Mounted Terminations: Rear Vent
■ 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 graphs,
see Figure 13.
■ Fireplace must be converted to Rear Vent conguration prior to
running vent, see Figure 6 and 7.
The Venting Graph
Measure the vertical height from the replace hearth to the centre of
the termination and the horizontal run from the replace ue collar to
the wall ange of the termination. Plot on the Venting Graph Figure 13
or 13a 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 120" and the horizontal
run to the wall ange of the vent termination is 138", this would be an
acceptable installation.
Example B: (Unacceptable Installation)
If the vertical dimension from the hearth is 48" and the horizontal run to
the wall ange of the vent termination is 72", this would be would not
be an acceptable installation.
Example C: (Unacceptable Installation)
If the vertical dimension from the oor of the replace is 60" and the
horizontal run to the wall ange of the vent termination is 144", this
would not be an acceptable installation.
WARNING:
An inspection of the explosion relief appers and door
MUST be made prior to lighting the replace. A faulty seal
on the door gasket and/or explosion ports will result in
products of combustion leaking into the living space and
may result in carbon monoxide poisoning.
27 1/2”
PXT Extension
RHS101 Heat
Shield
Termination
Hearth Exterior
Wall
NOTE:
12” MAX. horizontal
run with no vertical lift.
12” MAX.
30” Max.
53” Min
12”
Max.
Flex or Rigid
Section
25 1/5”
Min.
27 1/2”
42”
53”
A
C
B
Acceptable vent run
within non-shaded area.
If your installation does not fall
within the venting graph para-
meters, please contact Montigo
for Power Venting options.
Unacceptable vent run
within shaded area.
12”
27.5”
Page 13
P42DF* Indoor Gas Fireplace
XG0195 -030712
Installation

■ Montigo recommends the use of a ex section for the nal pipe
connected directly to the replace offering greater exibility of
installation and absorption of movement.
■ When penetrating a combustible ceiling, a ceiling restop must
be used.
■ Montigo recommends that all exterior corners and joints be
sealed with exterior caulking however we encourage you to
consult your Building Envelope Engineer or Waterproong
Consultant for further recommendations.
Connection and installation of the vent components should adhere
to the following guidelines:
Section 3-3-2: VENTING COMPONENTS
The following components and associated Montigo part numbers are
available for installation of a Wall Mounted Termination. Use only Montigo
Vent Components. Use of non-Montigo parts will void the warranty and
may impede operation of the replace.
■ Use any combination of rigid and Flex pipe as required.
■ Flex sections may be stretched up to 50% of their total length
(e.g. a 24” section maybe stretched to 36”).
■ Connect all vent sections using a minimum of three sheet metal
screws on the outer pipe ue..
■ Ensure the pipe ends male to female slide in a minimum of 1
1/2” of overlap.
■ Ensure all runs are supported with a minimum of 3 supports per
10’ of venting.
■ When hanging/ supporting venting, ensure that 1” clearance
is maintained on sides and bottom of vent runs and 2” above
horizontal vent runs to any combustible material.
■ Ensure when cutting sections of rigid pipe to maintain integrity
of internal supports.
■ Place the springs, supplied with the pipe kit, between the outer
and inner pipes to keep the pipes separate and avoid any possible
hot spots.
A - Termination PTO-4 (3" Length)
PTO-4F (3" Length)
B - Frame Kits MSR (Stucco Frame)
MOSR (Stucco Frame)
BSR-4 (4" Brick Frame)
BSR-6 (6" Brick Frame)
C - Flex Sections PFL - 1 (12" f/f Section)
PFL - 18 (18" f/f Section)
PFL - 2 (24" f/f Section)
PFL - 3 (36" f/f Section)
PFL - 4 (48" f/f Section)
PFL - 6 (72" f/f Section)
D - Rigid Sections PXT - 5 (5" f/f Section)
PXT - 10 (10" f/f Section)
PEXT - 1 (12" f/f Section)
PXT - 20 (20" f/f Section)
PEXT - 2 (24" m/f Section)
PEXT - 3 (36" m/f Section)
PEXT - 4 (48" m/f Section)
PEXT - 6 (72" m/f Section)
E - Elbows PEL-90MM (m/m 90º Elbow)
PEL-90FF ( f/f 90º Elbow)
PEL-90FM ( f/m 90º Elbow)
PEL-45FM ( f/m 45º Elbow)
Page 14
P42DF* Indoor Gas Fireplace
XG0195 - 030712
Installation

Section 3-3-3: Heat Shields
Installing a Wall Mounted RHS8 Heat shield
The RHS8 Heat shield CANNOT be used when the Termination is WITHIN
(36" Min. horizontal and 46" Min. vertical) from the replace, or directly
off the rear of the replace, as shown gure 14a. The RHS101 Heat
Shield (Figure 14c and 14d) MUST be used within the noted dimensions.
To install the RHS8, frame an opening in combustible construction,
Figure 14 below. Slide the Heat shield in place over the vent pipe
which attaches to the replace. After the replace and vent pipe has
been installed, clearances should match the dimensions in Figure 14.
Figure 14. RHS8 Installation. (Install by sliding over vent pipe
where it passes through the combustible construction). Figure 14c. RHS101 Installation. (Install by sliding Outer
Section over vent pipe where it passes through the
combustible construction.
Figure 14d. Heat Shield. After sliding the outer section in
place.
Termination
Drywall / sheetrock
RHS101 Heat Shield, inner Section
RHS101 Heat Shield
Outer Section
Fireplace
Installing a Wall Mounted RHS101 Heat shield.
The RHS101 Heat shield MUST be used where the RHS8 Termination
(Figure 14 and 14a) CANNOT be used. Use the RHS101 where any
of the dimensions are within the parameters shown, gure 14a.
To install the RHS101, Slide the Inner Section over the vent pipe that
will connect to the replace. Then fasten the vent pipe to the back of the
replace with a minimum of three sheet metal screws. (Note: ensure you
maintain the Max. 12" replace clearance). From the outside slide the
RHS101 outer section on see Figure 14c. To complete the installation
fasten the Heat Shield Outer Section & Termination frame to the structure
Figure 14d.
Figure 14a. RHS8 Installation. (Minimum requirements).
RHS8 Heat Shield
1” Min. Both sides Typical
2” Min.
1” Min.
Combustible Framing
12” max
Combustible
framing
Termination
Drywall / sheetrock
RHS101 Heat Shield, inner Section
RHS101 Heat Shield
Outer Section
Fireplace
Vent pipe, from fireplace
RHS8 Heat
Shield
36” Min
46” Min.
PTO Termination
Page 15
P42DF* Indoor Gas Fireplace
XG0195 -030712
Installation

7
8
"
2 1
8
"
6 5/8
5 1
2
"
Section 4: Wiring
Models
P42DFNI
P42DFLI
Figure 15. Wiring for the SIT IPI Wiring Schematic
Wiring for Fan Kit
Installations in Canada must be electrically grounded in accordance
with CSA C22.1 Canadian Electrical Code Part 1 and/or Local Codes.
Installations in the USA must be grounded in accordance with local
codes or, in the absence of local codes, with the National Electrical
Code, ANSI/NFPA 70.
NOTE: If any of the original wire supplied with the appliance is replaced,
it must be replaced with the same type, or its equivalent.
IPI
Figure 16. Electrical connection access.
Figure15a. Wiring schematic for unit.
IPI
Transformer
Green
Blk
Wht
Blk
Blk
Blk
Blk
Wht
Wht
Thermo
Sensor
Fan
Fan
Fan
Receptacle
Wht
Blk
Bulbs
Blk
Wht
Control Valve
Receptacle
Green
Green
Blk
Wht
Fan Speed
Control
Wht
Blk
L2
L1
Ground
Red
White
Green
Red
Black
WALL SWITC
H
1
6
1
6
Power Supply
110VAC, 5amp
Page 16
P42DF* Indoor Gas Fireplace
XG0195 - 030712
Installation

Figure 17. Gas line access.
Section 5-1: FUEL CONVERSION
nVerify that your replace is compatible with your available
gas type. (Natural Gas or Propane shown by "N" or "L"
in your model number
n If gas type is not compatible, contact your local Montigo
representative to purchase a conversion kit.
n Conversion kits must be installed by a qualied service
technician.
Section 5-2: GAS PRESSURE
n Optimum appliance performance requires proper input
pressures.
n Gas line sizing requirements will be determined in ANSI
Z223.1/ NFPA 54 National Fuel Gas Code in the USA
and CAN/CGA B149.1 in Canada.
Pressure requirements are:
Gas Pressure Natural Gas Propane
Minimum inlet pressure 5.5in. w.c. 11in. w.c.
Manifold pressure 3.5in. w.c. 10in. w.c.
nThe manifold outlet pressure is set from the factory to
the appropriate pressure but should be veried.
n To check pressures, control valves have a provision to
remove a 1/8” N.PT. plug to be tted with a hose barb.
n Montigo requires a service shut off valve be located in
an accessible location to isolate the gas supply.
QnQOnly install gas shut-off valves approved for use by the
state, province, or other governing body in which the
replace is being installed.
Section 5-3: GAS CONNECTION
n See Figure 22 below for location of gas line access.
n Flexible gas connectors must not exceed 3 feet in length,
unless allowable within local regulations.
n Connect incoming gas line to the 1/2"or 3/8" gas inlet port.
n Purge all air out of gas line.
n 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.
We recommend careful consideration be given to the effects of elevated mantel
temperatures which may be in excess of product design, for example: candles, plastic
or pictures. This can cause melting, deformation, discoloration or premature failure of
T.V. radio, and other electronic components.
CAUTION
When pressure testing the fireplace, Gas line, and input system follow the appropriate
local codes or your area. DO NOT connect the fireplace to pressures in excess of
1/2lb. This will damage the gas control valve.
NOTICE
8 1/2
11
4
"
2"
P42DF* Indoor Gas Fireplace
Installation
Page 17
P42DF* Indoor Gas Fireplace
XG0195 -030712
Installation
Section 5: Installing the Gas Line

WARNING!
We recommend careful consideration be given to the effects of elevated
mantel temperatures which may be in excess of product design,
for example: candles, plastic or pictures. This can cause melting,
deformation, discolouration or premature failure of T.V. radio, and other
electronic components.
Figure 18. Combustible mantels and facings.
WARNING!
When covering the upper metal portion of the replace, up to 4" (as
shown, Fig.19) with a non-combustible material Please Note: The
decorative facing materials may be subject to temperatures in excess
of 250° F. This should be considered when selecting facing materials.
Finishing Around the Fireplace
Combustible mantels and mouldings may be safely installed over the
top and on the front of the replace provided that they do not project
beyond shaded area shown in Figure 18.
Fireplace Facing
When sizing the nish material for your replace, it is important to
remember the following: THE OPENING MUST NOT BE OBSTRUCTED
IN ANY WAY - to do so restricts the air supply for the control compartments
and heat exchanger it also prevents access for servicing controls.
The face of the replace may be painted to match the room decor,
provided you use a heat-resistant paint. Decorative facing must not
extend past the replace opening at all, because it will interfere with
the access to retainers for removal of glass door.
Figure 20. Installing the Nailing Flange Extension.
Installing the Nailing Flange Extension
Once the replace is placed into the rough framed opening, and the
supplied steel lintel is in place, (Part No. H38074) (see Figure 2),
The supplied nailing extension must be placed along the top edge of
the replace and securely fastened in place to the metal lintel, and
combustible wood framing. Note: The nailing ange extension can be
substituted with a piece of NON-Combustible material of the same size
and thermal characteristics, ie: cement board or equivalent.
Glass doors on gas fireplaces are extremely hot while the fireplace is on and
remain hot even after the fireplace has been turned off. Safety screens are
available and can reduce the risks of severe burns. Please keep children away
from the fireplace at all times.
CAUTION
Do not use ammonia based or abrasive cleaners on the glass, they will permanently
etch the surface. Use an approved gas fireplace glass cleaner such as Kel-Kem or
White off.
NOTICE
4"
Side wall clearances are 3". Combustible surrounds may be installed
with 3" clearance to the side of the replace as shown in Figure 19.
4”Non-Combustible
Facing Material
Non-combustible Header
Drywall/Sheetrock
4”
3”
Figure 19. Combustible surrounds.
Page 18
P42DF* Indoor Gas Fireplace
XG0195 - 030712
Installation
Section 6: Finishing
Horizontal Run
(
in.
)
Vertical Height (in.)
Combustible construction
allowed in shaded area
Combustible facing material
Combustible header
Non-combustible header
Top of fireplace
Non-combustible facing

Removing the door:
The P42DF* doors are removed in a few simple steps. Follow these
below to remove the Horizontal access panel, unlatch the door buckles
and, remove the door. Replace in reverse order.
Remove the Horizontal Access Panel:
Figure 21a. Locate the door buckles. (Both Sides Typical)
Door Latch Hook
Door Latch Slot
Hand-hold
Release the Door Buckles
Figure 21. Removing and installing the the Horizontal Access Panel
Locate the Door Buckles:
Figure 21b. Door buckle Tool
1
Step 4:
Firmly grasp hand-hold end
of Door buckle tool and
place the machined end in
the slot under door frame.
(as shown)
Figure 21c.
Step 2:
Step 3:
Step 1:
Remove the Horizontal cover
by placing ngers in both nger
holes, then pushing away from
you and lifting out. Place it aside
during maintenance or cleaning.
Install in reverse order.
Installed Gas
Valve Cover
Finger Holes
Remove the Horizontal Access Panel:
To install the door, hook the top edge of the door frame into place. Lower
the door into position and follow the previous steps shown in reverse order.
Installing the Door:
2
Step 5:
Ensure the tool is rmly in
the lower end of the slot,
(as shown), Then pull toward
you (Caution: hold the tool
securely).
3
Step 6:
Pull hard if necessary to
release the spring tension.
(Caution: The latch springs
back with force, hold the tool
securely).
4
Step 7:
Remove the tool from the
latch slot. Ensure the latches
are hanging freely, the hook
end is released from the
bottom of the door. (Repeat
all 4-steps for the remaining
latches).
Figure 21d.
Figure 21e.
Figure 21f.
Step 8:
Grasp the Door on either side, usually midway and lift upward, lift
the door carefully up and away from the front of the replace. See
Figures 26g. Place the Door aside in a safe place while maintenance
and / or cleaning is being performed.
Figure 21g. Removing and installing the glass doors. (Both Sides
Typical)
Removing the Door:
Page 19
P42DF* Indoor Gas Fireplace
XG0195 -030712
Installation
Section 7: Installing & Removing the Door

Section 8: Installing the Accessories
If the restones are not placed properly (ONE LAYER ONLY),
on burners excessive sooting will result. The restones will
get very hot while the replace is in operation, and should
not be handled until cool.
Installing the Firestones
The P42DF* is supplied with restones. Remove the
Door as shown in the previous Instruction. Follow these
instructions to ensure all parts are removed or replaced
as required. Once the Trim and glass door is removed
place the restones randomly across the pan and the
burners as described in Figure 22 to 22f.
Note: Only cover the burner with one layer of designer restones.
Figure 22b Installation of the restones. (Ensure ONLY one
layer of restones cover the surface).
Figure 22c. Spreading the restones evenly and make sure
there are no restones covering the pilot .
Figure 22d. Completed restone installation.
Figure 22e. Completed restone installation. (Note: DO NOT
place ANY restones on top of the pilot cover).
Figure 22f. Gas replace with restones surrounding burner
tray.
CAUTION!
If the pilot cover is covered with restones it may result
in delayed ignition and/or damge to the appliance and/or
surrounding property.
WARNING!
Figure 22.Up-lighting glass in package.
Figure 22a Place the up-lighting glass in the burner tray.
Page 20
P42DF* Indoor Gas Fireplace
XG0195 - 030712
Installation