Montigo P52DF 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
XG0196 102512.1
P52DF Indoor
Prestige Series
Residential
Fireplace
Installation & Maintenance Manual
Langley, BC V4W 4A1 |  Ferndale, WA 98248

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
P52DF* Indoor Gas Fireplace
XG0196 - 102512.1
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 .................................. 6-7
Framing the Fireplace .................................................... 6
Clearances .................................................................. 7
Installing the Nailing Flange ........................................... 7
Section 3: Venting ....................................................... 8-18
Notes for Planning Venting ............................................. 8
▪ Section 3-1: Converting to Rear Vent .......................... 8
▪ Section 3-1-1: Converting to 5"/8" Venting .................. 8
▪ Section 3-2 Installing PVTK-1 ................................ 9-10
▪ Section 3-3: Installing Wall Mounted Direct Vent
Termination ............................................. 11
▪ Section 3-4: Venting Layout Wall Mounted Termination
........................................................... 12-14
▪ Section 3-5 Venting Components .............................. 15
▪ Section 3-6: Heat Shields ........................................... 16
Section 4: Wiring ............................................................ 17
▪ SIT - Proame Wiring ........................................ 17
Section 5: Installing the Gas Line ................................... 18
Section 5-1: Fuel Conversion ......................................... 18
Section 5-2: Gas Pressure.............................................. 18
Section 5-3: Gas Connection .......................................... 18
Section 5: Finishing ........................................................ 19
Finishing Around the Fireplace ..................................... 19
Mantels & Surrounds .................................................... 19
Section 7: Installing and Removing the Door ................. 20
Section 8: Installing the Accessories .............................. 21
▪ Installing the Firestones ........................................... 21
Operation ............................................................... 22
▪ For Your Safety - READ BEFORE LIGHTING ......... 22
▪ Lighting Instructions ................................................. 22
▪ Turn Off Gas to Appliance........................................ 22
Maintenance ......................................................... 23 - 25
▪ General ................................................................ 23
▪ Cleaning ................................................................ 23
▪ SIT Pilot Burner Adjustment..................................... 23
▪ Replacing Light Bulbs .............................................. 24
▪ Troubleshooting ....................................................... 24
▪ Replacement Parts List ........................................... 24
Appendix
A. Termination Locations .......................................... 25
B. Warranty .............................................................. 26
C. State of Massachusetts. ...................................... 27
D. Wiring Diagram with Power Vent ......................... 28

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
P52DF* Indoor Gas Fireplace
Safety Alert Key
Introduction
XG0196 - 102512.1
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 below. 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.
 
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
       
    
    

Page 4
P52DF* Indoor Gas Fireplace
XG0196 - 102512.1
Installation
IMPORTANT MESSAGE: SAVE THESE INSTRUCTIONS
The Prestige Series P52DF* 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:
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 a local Montigo dealer regarding the use of
a Montigo Power Vent.
Lay out the Vent run; calculating the required elbows
and straight runs of 5"/10" (5"/8" if applicable) 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 local
codes or in the absence of local codes to the current version
of Natural Gas and Propane Installation Code, CSA B149.
Electrical Installations must conform to the local codes or,
in the absence of local codes, to the current version of
Canadian Electrical Code, CSA C22.1.1
• Installations in the USA must conform to the local
codes or in the absence of local codes to the current
version of National Fuel Gas Code, ANSI Z223.1/NFPA 54.
Electrical Installations must conform to the local codes or,
in the absence of local codes, to the current version of the
National Electrical Code, ANSI/NFPA 70. See Appendix
C for installation within the State of Massachusetts.
.
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 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,
ect. It is imperative that control compartments, burners and circulating air passageways of
the fireplace are kept clean.
NOTICE
Young children should be carefully supervised when they are
in the same room as the applicance. Toddlers, young children
and others may be susceptible to accidental contact burns. A
physical barrier is recommended if there are at risk individuals
in the house. To restrict access to a fireplace or stove, install
an adjustable safety gate to keep toddles, young children and
other at risk individuals out of the room and away from hot
surfaces.
CAUTION

Page 5
P52DF* Indoor Gas Fireplace
XG0196 - 102512.1
Installation
Section 1: Installation Overview and Product Dimensions
FRONT VIEW
TOP VIEW SIDE VIEW
22 7
8
"
36 1
8
"
37 1
8
"
33 1
4
"
28 3
4
"
20 3
8
"
53 5
8
"
52"
47"
7 1
2
"
7 3
4
"
53 5
8
"
5"
10"
Figure 1. Fireplace dimensions (Tolerance ± ⅛").
Please review the Installation Checklist on Page 4 for
general information on preparing for a successful installation
of your replace.
The P52DF* 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. 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:

Page 6
P52DF* Indoor Gas Fireplace
XG0196 - 102512.1
Installation
Section 2: Framing & Clearances
Figure 2. Framing dimensions
(Straight wall & Corner Installation).
NOTE: Non-combustible header must be installed after unit
installation and before the installation of .nailing ange.
Figure 5. Non Combustible Framing for Top Vent or Rear
Vent, with alcove.
Figure 3. Combustible Framing for shelves over the
replace, Rear vent.
98
”
1" c
l
earance
to corners only
52”
69 1/4”
84”
Min.
Header
MIN
1”
Alcove
area over
Fireplace
Top
Vent
Non-Combustible
Materials Only
Ceiling
37½”
Frame in the enclosure for the unit with framing materials.
The framed opening for the assembled replace is 52" wide,
x 43" high x 24 1/2" 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 21.
Figure 4. Combustible Framing for shelves over the
replace, Top vent.
24 1/2
”
52
”
43”
Noncombustible
Stud
37½”
Note: When sheetrock is not used behind
the replace, framing depth 24 1/2" may
be reduced by 5/8".
12”
Combustible Header
shelf
R
ea
r V
e
nt
43”
N
on-com
b
ust
ibl
e
H
ea
d
er
Top Vent
56” Min.
26” Min
43”
1”
Non-
combustible
Header
Combustible Header
1”
7”
20
”
Max
Heat Sheild
6 1/2”

Page 7
P52DF* Indoor Gas Fireplace
XG0196 - 102512.1
Installation
Clearances:
When installing a shelf over the top of the replaces, the
following guidelines must be adhered to:
For Rear Vent multi-elbow applications, the minimum
clearance is 1" from the elbow off the rear of the replace to
a wall, or any combustible materials, and 12" clearance from
the top of the replace to the underside of any combustible
shelf materials.
For Top Vent applications, the minimum clearance is 1"
from the rear of the replace to a wall, or any combustible
materials, and 26" to the underside of any combustible
shelf materials.
1” clearance is maintained on sides and bottom of vent
runs and 2” above horizontal vent runs to any combustible
material.
 † †  ††  
      
NOTES:
† Clearance from top of replace to a combustible ceiling
within the replace enclosure.
†† 2 1/2" clearance is from the main body of the rebox, NOT
the insulated ange. Clearance to the insulated ange is 1".
Figure 6d. Securing the Nailing Flange Extension.
Installing the Nailing Flange Extension
(Part No. P52087)
The supplied nailing extension must be placed along the top
edge of the replace and securely fastened into place, as
shown in gure 6d. 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.

Before installing the supplied nailing ange extension, fold
tabs at bottom of nailing ange to a 90 degree angle.
Figure 6a. Bottom of Nailing Flange Extension
Figure 6b. Bottom of Nailing Flange Extension with tab
folded at 90 degree angle
Figure 6c. Insert folded tabs into slots above the front of
the replace
Front of Nailing Flange
Front of Fireplace

To avoid elevated mantel temperatures, all P52DF* gas
replaces are required to have the supplied standoffs installed.
The replace is supplied with two standoffs. Bend and install
these standoffs on top of the replace ensuring that the
height of the standoff maintains a 7 ½" clearance.
7 ½”
Figure 6. Installing standoffs

Page 8
P52DF* Indoor Gas Fireplace
XG0196 - 102512.1
Installation
Section 3: Venting
Figure 7. Flue cover and collar removal, Top Vented
replace.
Figure 7a Flue cover and collar installation, Rear Vented
replace.
Section 3-1: CONVERTING TO REAR VENT
Use the following instructions to convert a P52DF* for Rear
Vent use:
1. Remove the Rear ue cover and gasket (5" and 10")
on the ue outlet, as shown in Figure 9.
2. Next, Remove the Top ue collar's (5" and 10") on the
ue outlet, as shown in Figure 9
3. Install the (removed) Rear ue cover and gasket
material, to the Top vent outlet. Fasten the cover with
included hardware, as illustrated Figure 10.
4. Install the (5" and 10") collars to the rear vent outlet
using the included hardware, as illustrated Figure 10.
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
with 5" and 10" collar installed.
UNITS CANNOT BE REAR VENTED
STRAIGHT THROUGH THE WALL.
REAR VENT APPLICATIONS MUST BE
MULTI-ELBOW.
5” Inner Flue Collar
Outer Flue Collar
Flue Gasket
Flue Cover Plate
10”
Flue Gasket
Flue Cover Plate
10”Outer Flue Colla
r
5” Inner Flue Collar
Section 3-1-1: CONVERTING TO 5"/ 8" VENTING
(VERTICAL VENT RUNS OVER 8' FROM TOP OF
UNIT ONLY)
Use the following instructions to convert a P52DF* from
5"/ 10" to 5"/ 8" venting for Top or Rear Vent use outside
of 8 feet vertically from the unit:
1. Remove the 10" outer ue collar on the ue outlet,
from the desired vent start - TOP or REAR
2. Install the separately ordered 8" reducing collar
(RVA108) on the Top or Rear vent outlet.

Page 9
P52DF* Indoor Gas Fireplace
XG0196 - 102512.1
Installation
Figure 8. (5"/8") Top vent, Roof mounted termination
with no offset in vent run.
Figure 8a. (5"/8") Top vent, Roof mounted with 1 offset
(1 offset= two 90° bends).
Figure 8b. (5"/8") 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.
 






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.
For a more detailed diagram of allowed termination
locations, see Appendix A.
A maximum of two offsets (each offset is made up of 2-90°
bends) may be made.
Firestops must be installed as required by National &
local codes
Ensure all runs are supported with a minimum of 3 supports
per 10’ of venting.
Install all roof ashing and storm collars as shown.
Support ring
Support plate
Firestop
32’ max.
2’ min.
Obstacle
PVTK1
Termination
8’ min.
Support straps or
support plate & rin
2’ min.
Firestop
Firestop
Firestop
32’ max Support plate
& ring
Obstacle
PVTK1
Termination
8’ min.
Support ring
Support plate
Firestop
32’ max.
2’ min.
PVTK1
Termination
8
’ min.
PEXT
PXT-10
Adaptor
Flue
Collar

Page 10
P52DF* Indoor Gas Fireplace
XG0196 - 102512.1
Installation
Figure 8c. (5"/8") Rear vent, Roof mounted venting (1
= 90° bend).
8’ min.
Support ring
Support plate 32’ max
Termination
12”
Max.
PVTK1
PEXT Sections

Page 11
P52DF* Indoor Gas Fireplace
XG0196 - 102512.1
Installation
Section 3-3: INSTALLING A WALL MOUNTED
DIRECT VENT TERMINATION (5"/10")
This section applies to installations where the direct vent
termination will be wall mounted with 5" and 10" pipe.
1). Installation of Termination with built in frame under 8'
from the top of the unit.
A Termination with a Built-In Frame is installed during
framing of a structure.
1. Frame the termination opening to 17" x 17".
2. Install exterior sheathing to the structure framing.
3. Fasten the termination to the sheathing using a minimum of
4 screws.
RTO-4F (5"/10")
Termination
Figure 9. Installing a RTO-4F termination.
RTKOG (5"/10")
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 9a. Installing a RTO termination heat guard.
Framing
Exterior
Sheathing
Fastening Hardware,
minimum 4-screws
”
17
17”
RHS 104
(Not shown)
Section 4-3-2: INSTALLING A WALL MOUNTED
DIRECT VENT TERMINATION (5"/8")
This section applies to installations where the direct vent
termination will be wall mounted with 5" and 8" pipe.
1). Installation of Termination with built in frame above 8'
from the top of the unit.
A Termination with a Built-In Frame is installed during
framing of a structure.
1. Frame the termination opening to 14" x 14".
2. Install exterior sheathing to the structure framing.
3. Fasten the termination to the sheathing using a minimum of
4 screws.
PTO-4F (5"/8")
Termination
Figure 10b. Installing a RTO-4F termination.
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 10c. Installing a RTO termination heat guard.
Framing
Exterior
Sheathing
Fastening Hardware,
minimum 4-screws
RHS 101
(Not shown)
”
14
14”

Page 12
P52DF* Indoor Gas Fireplace
XG0196 - 102512.1
Installation
Figure 11. 5"/8" Top Vent Venting Graph for wall mounted
terminations.
84”
96”
A
C
B
Unacceptable vent run
within shaded area.
Acceptable vent run
within non-shaded area.
If your installation does not fall
within the venting graph parame-
ters, please contact a local Montigo
Dealer for Power Venting options.
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 11 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 120", 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 11a. 5"/8" Top Vented, wall mounted installation with one
90° bend. The vent run must comply with Venting Graph for Top
vent, wall mounted terminations, Figure 11.
Section 3-4: 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.
For Heat Shield requirements see Section 3-3-3.
Once the proposed venting layout has been
determined refer to Figure 11 or 12 to ensure the
layout is acceptable.
Notes Wall Mounted Terminations: 5"/8" 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 11
Wall mounted Terminations
The following details are some possible congurations for
Wall mounted terminations.
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.
WARNING:
Heat Shield
Termination
Hearth Exterior
Wall
Flex section
7’ Max. for min Vertical
8’ Min.

Page 13
P52DF* Indoor Gas Fireplace
XG0196 - 102512.1
Installation
20”
56”
A
C
B
Unacceptable vent run
within shaded area.
Acceptable vent run
within non-shaded area.
If your installation does not fall
within the venting graph parame-
ters, please contact a local Montigo
Dealer for Power Venting options.
Notes Wall Mounted Terminations: 5"/10" Top & 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 12.
■ Fireplace must be converted to Rear Vent conguration
prior to running vent, see Figure 7 and 7a.
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 12 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 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 12. 5"/10" Top or Rear Vent Venting Graph for wall mounted
terminations.
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.
WARNING:
Figure 12a. 5"/10"Top Vented, wall mounted installation with one
90° bend. The vent run must comply with Venting Graph for Top
vent, wall mounted terminations, Figure 12.
Figure 12b. 5"/10" Rear Vented, wall mounted Multi-elbow
termination installation. The vent run must comply with the Venting
Graph for Rear vent, wall mounted terminations, 
8” Max.
56”
Min.
12”
Max.
Flex or Rigid
Section
27”
Min.
28 3/4”
Heat Shield
Termination
Hearth Exterior
Wall
Flex section
20” Max. for min Vertical
56” Min.

Page 14
P52DF* Indoor Gas Fireplace
XG0196 - 102512.1
Installation
Figure 13. Corner installation.
Figure 13a. Flex installation.
45° Corner Installation.
Attach an REL-45 (45° elbow) directly onto the ue collar.
Cut the RXT-20 to suit, and attach it to the REL-45. Slide
the replace into position and attach to the termination.
45° or less Corner Installation.
Use an RTO-4 termination and an RFL-4 (48" 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 RHS 104 heat shield, a RFL-2(f/f) exible
pipe, and a termination with or without a mounting frame.
Flue Collar
REXT - 1
REL - 90 Elbow
REL - 45 Elbow
RXT 20
104
RTO-4F
RFL4
RTO-4F
104
Note: For corner installation you need a minimum 56" from hearth to centre of pipe. Framing must be done as
described in Figure 2 on page 6.

Page 15
P52DF* Indoor Gas Fireplace
XG0196 - 102512.1
Installation
Section 4-5: Venting Components
Connection and installation of the vent components should
adhere to the following guidelines:
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.
Firestops must be installed as required by National
& local codes.
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.
Use any combination of rigid and ex pipe as required
and in any orientation (Male connectors can face in
any direction).
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.
Rigid pipe may be cut less than half way from the
female end only.
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.
IMPORTANT:
Please Refer to your Building Envelope
Engineer or Waterproong Consultant
for a review of ALL penetrations through
exterior walls or the roof.
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

Page 16
P52DF* Indoor Gas Fireplace
XG0196 - 102512.1
Installation
Section 3-6: Heat Shields

The RHS102 Heat Shield (Figure 16 and 16a) MUST be
used in all cases where the venting passes through a wall.
To install the RHS 102, frame an opening in combustible
construction. 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. RHS102 Installation.

The RHS104 Heat shield MUST be used in conjunction with
the RTO-4 Termination (Figure 16 and 16a).
To install the RHS104, Slide the Inner Section over the vent
pipe. From the outside slide the RHS104 outer section on
(see Figure 15a). To complete the installation fasten the Heat
Shield Outer Section & Termination frame to the structure.
Figure 16. RHS 102 & RHS 104 Installation. (Minimum
requirements).
Combustible
framing
Termination
Drywall / sheetrock
Outer Section
Vent pipe
RHS 104 Heat Shield
RHS 104 Heat Shield
Inner Section
Figure 16a. RHS 102 & RHS 104 Installation. (Minimum
requirements).
Figure 15a. RHS104 Installation.
RHS104 Heat
Shield
27” Min.
RTO-4Termination
36” Min
RHS 102
Heat
Sheild 60 Min”
5”/10”
Figure 14a. RHS102 Installation.
RHS 104 Heat Shield
RTO - 4 Termination
27” Min
RHS 102
Heat Shield
36” Min
60” Min
5”/10”
Figure 15. RHS104 Installation.
Combustible
framing
Drywall / sheetrock
Outer Section
Vent pipe
RHS 102 Heat Shield
RHS 102 Heat Shield
Inner Section
Outer Shield 10 5/8”
1/4” Min. Both sides Typical
1/4” Min.
1/4” Min .
Combustible Framing
Inner Shield 11 1/2” Outer Shield 10 5/8”
1 1/4”” Min. Both sides Typical
1 1/4” Min
.
1 1/4” Min.
Combustible Framing
Inner Shield 11 1/2”

Page 17
P52DF* Indoor Gas Fireplace
XG0196 - 102512.1
Installation
Section 4: Wiring
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.



Figure 18. Electrical connection access.
5”
5½”
8”
2½”
0.8”
5½”
2½”
8”
0.8”
5”
Wiring Diagram for P52DF with SIT Proflame 2 Electronic Ignition
1.5V AA type
1.5V AA type
1.5V AA type
1.5V AA type
BLACK
WHITE
WHITE
BLACK
BLACK
WHITE
GREEN
VARIABLE SPEED
COMFORT FANS
Lights
ON/OFF
CONTROL
MAIN
Power
120VAC 60 Hz
6 Amps
SPARK
SENSOR
RED
BLACK
BATTERY
PACK
MAIN ON/OFF
SWITCH
YELLOW/GREEN
885 PROFLAME
PILOT
BURNER
ORANGE
GREEN
BLACK
BROWN
YELLOW
ORANGE
6
10
4
6
3
4
Blk
Blk
Wht
Wht
OPTIONAL CPI/IPI SWITCH BLUE
WHITE
X10
X11
X12
X13
X1
X6
X5
X4
X3
X2
LED Lights
LED1 - Red LED
LED2 Amber LED
3.15A FUSE
SW1

Page 18
P52DF* Indoor Gas Fireplace
XG0196 - 102512.1
Installation
Section 5: Installing the Gas Line
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 ame of
any kind to test for leaks.
WARNING!
When pressure testing the replace, Gas line, and input
system follow the appropriate local codes or your area.
DO NOT connect the replace to pressures in excess
of 1/2lb. This will damage the gas control valve.
Figure 19. Gas line access.
Section 6-1: FUEL CONVERSION
■ Verify that your replace is compatible with your
available gas type. (Natural Gas or Propane shown
by "N" or "L" in your model number
■ If gas type is not compatible, contact your local Montigo
representative to purchase a conversion kit.
■ Conversion kits must be installed by a qualied service
technician.
Section 6-2: GAS PRESSURE
■ Optimum appliance performance requires proper
input pressures.
■ Gas line sizing requirements will be determined in
ANSI Z223.1 National Fuel Gas Code in the USA
and CAN/CGA B149 in Canada.
Pressure requirements are:
  
  
  
■ The manifold outlet pressure is set from the factory
to the appropriate pressure but should be veried.
■ To check pressures, control valves have a provision
to remove a 1/8” N.PT. plug to be tted 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 replace is being installed.
Section 6-3: GAS CONNECTION
■ See Figure 19 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"or 3/8" gas inlet
port.
■ Purge all air out of gas line.
■ 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.
1¼”
2”
10½”

Page 19
P52DF* Indoor Gas Fireplace
XG0196 - 102512.1
Installation
Section 6: Finishing

NOTE: National Canadian Gas Association mantel test
requirements are for re hazard prevention to combustible
materials.
New technology, to meet consumer and government
demands for the wise use of energy, has prompted us to
manufacture many models of replaces which are hot, fuel
and energy efcient.
Please be aware; temperatures over the mantel will rise
above normal room temperature and walls above replace
may be hot to touch.
Side wall clearances are 3". Combustible surrounds may
be installed with 3" clearance to the side of the replace
as shown in Figure 21.
4”Non-Combustible
Facing Material
Non-combustible Header
Drywall/Sheetrock
4”
3”
Figure 21. Combustible surrounds.
 Combustible mantles and facings.

Non-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 20.

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.
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.
WARNING!
Please Note: The decorative facing materials may
be subject to temperatures in excess of 250° F. This
should be considered when selecting facing materials.
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

Page 20
P52DF* Indoor Gas Fireplace
XG0196 - 102512.1
Installation
Section 7: Installing & Removing the Door
Removing the door:
The P52DF* 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 22a. Locate the door buckles.
Door Latch Hook
Door Latch Slot
Hand-hold
Release the Door Buckles
Figure 22. Removing and installing the Horizontal .......
Access Panel
Figure 22b. 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 22c.
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.
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 22d.
Figure 22e.
Figure 22f.
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 22g. Place the
Door aside in a safe place while maintenance and / or
cleaning is being performed.
Figure 22g. Removing and installing the glass doors.
Removing the Door:
Locate the Door Buckles:Step 2:
Finger Holes
Installed Gas
Valve Cover