Montigo R Series Instruction Manual

XG0225 - 170223
Installation & Maintenance Manual
• Theinstallationofthisreplacemustbedonebya
qualiedandcertiedgasapplianceinstaller.
• Checklocalcodesandreadallinstructionspriorto
installation.
®
C
US
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could result in serious injury,
death, or property damage.
—Donotstoreorusegasolineorotherammablevaporsand
liquidsinthevicinityofthisoranyotherappliance.
— 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.
• Leavethebuildingimmediately.
• Immediatelycallyourgassupplierfromaneighbour's
phone. Follow the gas supplier’s instructions.
• Ifyoucannotreachyourgassupplier,callthere
department.
—Installationandservicemustbeperformedbyaqualied
installer,serviceagencyorthegastter.
R Series INDOOR GAS FIREPLACE
R320 50,000 BTU/hr Natural Gas or Propane Gas
R420 65,000 BTU/hr Natural Gas or Propane Gas
R520 80,000 BTU/hr Natural Gas or Propane Gas
R720 100,000 BTU/hr Natural Gas or Propane Gas
R820 100,000 BTU/hr Natural Gas or Propane Gas
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 qualied installer, service agency or the gas supplier.
A barrier designed to reduce the risk of burns from the
hot viewing glass is provided with this appliance and
shall be installed for the protection of children and other
at-risk individuals.
HOT GLASS WILL
CAUSE BURNS.
DO NOT TOUCH GLASS
UNTIL COOLED.
NEVER ALLOW CHILDREN
TO TOUCH GLASS.
Installation and service must be performed by a qualied installer,
service agency or the gas tter.
Installer: Leave this manual with the appliance.
Consumer: Retain this manual for suture reference.
NOTICE
CAUTION
DANGER
DANGER
Some materials used in the manufacturing process of this product can
expose you to Benzene which is known in the State of California to
cause cancer and birth defects or other reproductive harm. For more
information go to www.P65warnings.ca.gov
WARNING

XG0225 - 1702232
General
Congratulations on your purchase of a Montigo Fireplace.
With over 30 years of experience, Montigo is committed to providing
you with a gas fireplace 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 in Table 1. 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.
MODEL Natural Gas Liquid Propane Gas Rating Linear Burner w/ Glass Accessories SIT Electronic Ignition
R320N-I X 50,000 X X
R320L-I X 40,000 X X
R420N-I X 65,000 X X
R420L-I X 55,000 X X
R520N-I X 80,000 X X
R520L-I X 65,000 X X
R720N-I X 100,000 X X
R720L-I X 80,000 X X
R820N-I X 100,000 X X
R820L-I X 80,000 X X
Introduction
Safety Alert Key
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, WILL result in minor or moderate
injury.
Indicates a hazardous situation which, if not
avoided, COULD result in death or serious
injury or property damage.
Indicates practices that are important, but
not related to personal injury.
DANGER
CAUTION
WARNING
NOTICE
Figure 1 R-Series Single Sided Specications
Vented decorative gas appliance:
not a source of heat; not for use with solid fuel
NOTICE

XG0225 - 170223 3
General
Contents
Safety Alert Key.................................................................................................. 2
Introduction ....................................................................................................... 2
Section A: Before You Begin ......................................................................................... 4
Installation Checklist........................................................................................................ 4
Standard Installation Checklist...................................................................................... 5
Rating Plate Sample ......................................................................................................... 6
Section 1: Product Dimensions......................................................................... 7
R320, R420, R520, R720, R820 Dimensions............................................................... 7
Section 2: Framing ............................................................................................. 8
Clearance Requirements:............................................................................................... 8
Framing clearances:......................................................................................................... 8
Venting clearances:.......................................................................................................... 9
Raised Installation: ........................................................................................................... 9
Installing the Fireplace ..................................................................................................10
Back framing the Fireplace...........................................................................................10
Recessed into floor Installation...................................................................................11
Section 3: Venting ............................................................................................ 12
Section 3-1: Converting to Rear Vent .......................................................................12
Section 3-1-1: Converting the Flue.............................................................................12
Section 3-1-2: Converting the Pressure Sensing Tube and Air Baffle ...............13
Section 3-2: Installing a Roof Mounted Vent System .................................. 14
Section 3-3: Installing a Wall Mounted Vent System ................................... 15
Section 3-3-2: Venting Components..........................................................................16
Section 3-3-3: Heat Shields.............................................................................. 17
Section 4: Wiring .............................................................................................. 18
Installing the Fireplace Control Box...........................................................................18
Installing the Wall Switch ..............................................................................................18
Electrical control panel..................................................................................................19
Section 5: Installing the gas line..................................................................... 20
Fuel Type...........................................................................................................................20
Gas Pressure ...................................................................................................................20
Section 5-3: GAS CONNECTION..................................................................................20
Section 6: Testing the system......................................................................... 21
6-1: Testing the system before gas connection......................................................21
6-2: Testing the system with gas connection (Highly recommended)...............21
Section 7: Finishing the fireplace................................................................... 22
Finishing Around the Fireplace ...................................................................................23
Mantels & Surrounds ....................................................................................................23
Section8:Removing&InstallingScreenandWindow ................................ 24
Removing the Screen..................................................................................................... 24
Removing the Window .................................................................................................. 24
Reinstalling the door...................................................................................................... 24
Section 9: Installing the Accessories.............................................................. 25
Installing the Firestones or optional Fireglass ........................................................ 25
Installing Optional Speckled Stones ......................................................................... 25
Installing Optional River Rocks ................................................................................... 25
Optional Log Set - R520................................................................................................ 26
Log Kit Installation.......................................................................................................... 26
Optional Log Set - R820................................................................................................ 28
Log Kit Installation.......................................................................................................... 28
Section 10: Cleaning and Maintenance ........................................................ 32
General ............................................................................................................................. 32
Cleaning ............................................................................................................................ 32
Procedure for Checking Calibration of Flue Gas Switch ....................................... 32
Replacement Parts .......................................................................................... 33
Appendix A: Power Vent Locations................................................................ 34
PVVEX510-300 Vertical Power Vent Detail ............................................................... 34
Unacceptable Install ...................................................................................................... 34
PVHIN58-300 Inline Power Vent with TMHIN58-40 Detail ................................... 34
PVVEX510-300 Power Vent Locations....................................................................... 35
PVHEX510-300 Horizontal Power Vent Detail......................................................... 37
PVHFL510-300 Horizontal Power Vent Detail ......................................................... 37
Appendix B: Warranty ..................................................................................... 40
Appendix B: Warranty Continued .................................................................. 41
Appendix C: Amendment ................................................................................ 42
(Gas Fireplace / Equipment sold in the State of Massachusetts) 5.08: Modifica-
tions to NFPA-54, Chapter 10...................................................................................... 42

XG0225 - 1702234
General
IMPORTANT MESSAGE: SAVE THESE INSTRUCTIONS
The R Series replaces 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.
Installation Checklist
• Determine the desired install location of your replace.
• See Section 1, Dimensions and refer to the Framing Section 2 for
details.
• Select your type and location of your Power Vent run: Roof Mounted
PVVEX510-300, External Wall Mounted PVHEX510-300, Flush Louver
Wall Mounted PVHFL510-300.
• Your termination location should be selected to provide the most
ecient vent run.
• Lay out the Vent run; calculating the required elbows and straight
runs of 5"/10" ex and/or rigid pipe. (5"/8" for R320 and R420)
• Refer to the Section 3, "Venting" for details.
• Montigo supplies 20' of low voltage wire, which can be spliced to a
maximum of 100' with wire of equal quality. This wire CANNOT run
in conduit with any other wire.
• Refer to Section 4, for Wiring Details.
• The gas connection is located on the bottom right side (pilot burner
side) of the replace.
• Refer to local codes and guidelines for installation requirements.
• Refer to Section 5, "Installing the Gas Line" for details.
• 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.
Do not use this appliance if any part has been under water.
Immediately call a qualied service technician to inspect the appliance
and to replace any part of the control system and any gas control that
has been under water
Due to high temperatures, the appliance should be located out of
trac and away from furniture and draperies
Children and adults should be alerted to the hazards of high surface
temperature and should stay away to avoid burns or clothing ignition
A barrier designed to reduce the risk of burns from the hot viewing
glass is provided with this appliance and shall be installed for the
protection of children and other at-risk individuals
Clothing or other ammable material should not be placed on or near
the appliance
Installation and repair should be done by a qualied service person.
The appliance should be inspected before use and at least annually
by a professional service person. More frequent cleaning might be
required due to excessive lint from carpeting, bedding material, etc. It
is imperative that control compartments, burners, and circulating air
passageways of the appliance be kept clean
NOTICE
NOTICE
NOTICE
NOTICE
NOTICE
NOTICE
Section A: Before You Begin

XG0225 - 170223 5
General
Standard Installation Checklist
This standard installation checklist is to be used by the installer in conjunction with, not instead of, the instructions contained within this
installation manual.
Customer Date Installed:
Install Address: Location of Fireplace:
Installer:
Model (circle one): R320N-I, R320L-I, R420N-I, R420L-I, R520N-I,
R520L-I, R720N-I, R720L-I, R820N-I, R820L-I
Dealer Phone:
Serial #:
YES NO IF NO, WHY NOT?
Appliance Install: Section 2
Framing complies with install manual.
Standos have been installed.
Proper clearances have been maintained.
Venting: Section 3
Venting conguration complies with vent diagrams.
Venting installed, fastened, and secured in place maintaining proper clearance.
Firestops installed.
Exterior wall/roof ashing installed and sealed in compliance with local building code.
Terminations installed and sealed in compliance with local building code.
Direct vent termination is highest point in vent assembly.
Wiring/Electrical: Section 4
Unswitched power provided to the appliance PPO box.
Low voltage wire connected to dry contact wall switch (non-powered)*
Gas: Section 5
Proper appliance for fuel type.
Was a conversion performed?
Leak check performed & inlet pressure veried.
Finishing: Section 6
Only non-combustible materials installed in non-combustible areas.
Clearances meet installation manual requirements
Mantels and/or projections comply with install manual
Appliance Setup: Section 7 through 9
Media, door, and screen installed according to install manual
Manual given to home owner.
Started appliance and veried no gas leaks exist.
Comments:

XG0225 - 1702236
General
Rating Plate Sample
Figure 1.b Rating Plate for R720 Figure 1.c Rating Plate for R820
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LBL1207D-V5.1 R(P)VIEW_HSI_WITH SCREEN _AUG.17.2015
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

    






 
 
 


 






 












LBL1207D-V5.1 R(P)VIEW_HSI_WITH SCREEN _AUG.17.2015
  










 


    




  

  


  



    






 
 
 


 




XG0225 - 170223 7
General
946
37 1
4"
409
16 1
8"
243
99
16 "
314
12 3
8"
1237
48 11
16 "
127
5"
203
8"
1237
48 11
16 "
241
91
2"
536
21 1
8"
387
15 1
4"
21
7
8"
1055
41 9
16 "
325
12 3
4"
54
21
8"
967
38 1
16 "
522
20 9
16 "
536
21 1
8"
811
31 15
16 "
GAS
SUPPLY
COMBUSTION AIR SWITCH
SENSOR LINE
1075
42 5
16 "
189
77
16 "
502
19 3
4"
275
10 13
16 "
R320
DIMENSIONS TOLERANCES ARE IN:
METRIC - MM 1.6 MM
IMPERIAL - FRACTIONAL 1/16"
THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF CANADIAN HEATING PRODUCTS. ANY REPRODUCTION IN PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF CANADIAN HEATING PRODUCTS IS PROHIBITED.
PROPRIETARY AND CONFIDENTIAL
September-29-17 1:26:07 PM
DATE:
R320, R420, R520, R720, R820 Dimensions
Figure 2. Fireplace dimensions (Tolerance ± ⅛").
Figure 2.b Control Box Dimensions (Tolerance ± ⅛").
Section 1: Product Dimensions
A
X
E
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
F
D
B
C
UNIT DIMENSIONS
A B C D E F G H I J K L M N O P Q R S T U V
R320 21⅛" 15¼" 4811/16"8" 5" 9½"419/16"425/16"77/16"19 ¾" 1013/16"381/16"37¼" 4811/16"99/16"16⅛" 12⅜" 12¾" 21⅛" 209/16"2⅛" 3115/16"
R420 21⅛" 15¼" 6011/16"8" 5" 9½"539/16"42¼" 77/16"19¾" 1013/16"381/16"49¼" 6011/16"99/16"16⅛" 12⅜" 12¾" 21⅛" 2011/16"2⅛" 3115/16"
R520 21⅛" 15¼" 7211/16"10" 5" 9½"659/16"435/16"77/16"21¾" 913 /16"391/16"61¼" 7211/16"99/16"18⅛" 11⅜" 12¾" 21⅛" 2011/16 "2⅛" 3215/16"
R720 21⅛" 15¼" 9611/16"10" 5" 9½"899/16"441/16"77/16"21¾" 1013/16 "401/16"85¼" 96⅝" 99/16"18⅛" 12⅜" 12¾" 21⅛" 2011/16"2⅛" 3315/16"
R820 21⅛" 15¼" 10811/16"10" 5" 9½"1019/16"443/16"77/16"21¾" 1013/16"401/16"97¼" 10811/16"99/16"18⅛" 12⅜" 5¾" 21⅛" 2011/16"2⅛" 3315/16"
11
7
8
"
303
10"
255
31
4
"
82
11 1
2
"
292
71
4
"
186
53
4
"
148
13
8
"
34
95
8
"
244
11 7
8
"
303
10"
255
31
4
"
82
11 1
2
"
292
71
4
"
186
53
4
"
148
13
8
"
34
95
8
"
244
11 7
8
"
303
10"
255
31
4
"
82
11 1
2
"
292
71
4
"
186
53
4
"
148
13
8
"
34
95
8
"
244
11 7
8
"
303
10"
255
31
4
"
82
11
1
2
"
292
71
4
"
186
53
4
"
148
13
8
"
34
95
8
"
244
Gas
Supply
Combustionairswitch

8
Installation
XG0225 - 170223
38 3
4
"
983
18 1
4
"
463
PVHFL510-300
Stud Wall
Rear
Fireplace
Floor
Header
Termination
Mounting
Flange
Section 2: Framing
When constructing the framed opening, please ensure there is access
to install the gas line when the unit is installed.
Figure 3.b Clearances for straight rear vented installation with PVHEX58-300.
Figure 3.c Clearances for straight rear vented installation with PVHFL510-300.
NOTICE
Clearance Requirements: Framing clearances:
MODEL Top - Rear vent† Top - Top vent† Rear Sides Floor Mantel
R320 24" 24" 2" 6" 0" See Section 6 Finishing around the replace
R420 24" 24" 2" 6" 0" See Section 6 Finishing around the replace
R520 24" 24" 2" 6" 0" See Section 6 Finishing around the replace
R720 24" 24" 2" 6" 0" See Section 6 Finishing around the replace
R820 24" 24" 2" 6" 0" See Section 6 Finishing around the replace
NOTES:
† Clearance from top of replace to a combustible ceiling within
the replace enclosure. Unprotected combustible walls which are
perpendicular to the replace opening must maintain 6" clearance,
see gure 3.
Figure 3. Combustible Wall Clearances
To ensure the replace operates safely, all models must maintain the
following clearances:
STRAIGHT REAR VENTED INSTALLATION - PVHEX510-300
STRAIGHT REAR VENTED INSTALLATION - PVHFL510-300
24"
610
34"
863
8"
203
PVHEX510-300
Stud Wall
Rear
Fireplace
Floor
Header
Termination
Mounting
Flange
34"
38 ¾"
24"
24"
34 ¼"
16 ¼"
8"
18 ¼"
Stud wall rear
Stud wall rear
Termination
mounting
ange
Termination
mounting
ange
PVHEX510-300
PVHFL510-300
Floor
Floor
Fireplace
Fireplace
Header
Header

9
Installation
XG0225 - 170223
Figure 3.d Clearances for rear vented installation with elbow
Figure 3.f Fireplace installation, (Rough Frame-In dimensions).
Figure 3.e Clearances for top or rear vented installation, straight vent run or with elbow(s).
Drywall or
Equiv.
¾"
Plywood
Platform
A
B
C
Venting clearances: Raised Installation:
Determine the height of the platform based on where you want the
bottom edge of the glass to be, see gure 2 for unit dimensions.
Maintain minimum ceiling height shown in table. Build replace frame
as shown in gure 3.f
† C is 29" for straight out the back vent run installations.
REAR VENTED INSTALLATION WITH ELBOW
REAR VENTED INSTALLATION STRAIGHT VENT RUN
Framing Dimensions
Model A B C
R320 55" 47" 23¾" †
R420 67" 47" 23¾" †
R520 77" 45" 23¾" †
R720 101" 46" 23¾" †
R820 113" 46" 23¾" †
Max. Platform
Height
Min. Required
Ceiling Height
24" 8'
48" 10'
Wall framing
34 ¾"
16 ¾"
Wall framing
2" Min.
24" Min.
14" Min.

10
Installation
XG0225 - 170223
Installing the Fireplace
Back framing the Fireplace
Figure 3.g Fireplace installation, (Inlet Gas & Power Vent).
Figure 3.h Completed back frame Fireplace installation
Place the Fireplace on the
platform and install the Vent
pipe, and Power Vent module.
Next, connect the Gas line, and
provide a gas service shut-o
valve; according to local gas
codes. Before fastening in
place, line up the front face of
the replace (top and bottom),
Figure 3.g
Then, secure in place with
1/4"bolts and washers to the
platform.
Maintain a 1" clearance around the throat
(projection at the front of the replace that
holds the glass door) when installing 2x4s for
back framing.
Intake / Exhaust
Vent Pipe (5”/8”)
2-pcs 2 x 4 (vertical)
Both Sides Typ.
1"
1"
1"
1"
2 x 4 (horizontal)
2 x 4 (horizontal)2 x 4 (Vertical)
Steel header
(supplied by Montigo)
Supply Gas
connection
2"
½"
2"
Back framing dimensions
Model Supplied Steel Header
Measurements
R320 46 ½" x 3"
R420 58 ½" x 3"
R520 70 ½" x 3"
R720 80" x 3" - qty 2
R820 80" x 3" - qty 2
1. Cut and install one 2x4 to t
horizontally under the replace
throat.
2. Cut and install required quantity
of short ller 2x4's to t vertically
under the horizontal piece.
3. Cut and install four vertical
2x4's. Place 2 on each side of the
replace throat.
4. Install supplied steel header 1"
above the throat. Attach steel
header to vertical 2x4's as shown
in gure 5.
5. Cut and install one horizontal 2x4
below the top frame.

11
Installation
XG0225 - 170223
Recessed into floor Installation
Figure 3.i Recessed Fireplace installation
This replace can be recessed
into the oor to get the viewing
area as low as possible.
Maintain a minimum of 6"
clearance from the bottom
of glass to completed floor.
Minimum clearance can be
reduced to 3" for uncarpeted
flooring. Discoloration may
occur due to high temperatures.
1” clearance
2-pcs 2 x 4 (vertical)
Both Sides Typ.
1" 1"
6"
Recessed
oor
1"
2 x 4 (horizontal)
2 x 4 (horizontal)
2 x 4 (Vertical)
Steel header
(supplied by Montigo)

12
Installation
XG0225 - 170223
Figure 4. Flue cover and collar removal, Top Vented replace.
Figure 4.b Flue cover and collar installation, Rear Vented replace
R320 and R420 units have 5" and 8" venting and are converted to rear
venting in the same instructions as the 5" and 10"
NOTICE
Under no circumstances can Montigo ex venting be cut to
accommodate an installation. Use an alternative length to complete
your vent run.
NOTICE
Section 3: Venting
Montigo supplies a variety of power venting options. The location of
the power vent should be selected and laid out to provide the most
ecient possible run to an external wall or through the roof.
Notes For Planning Venting:
• R-Series replaces are Power Vent Designated.
• Venting originates from the top or rear of the unit.
• Venting can terminate through the roof or exterior wall.
• For a detailed diagram of allowed termination locations, see
Appendix A.
• Once the termination location has been established refer to the
appropriate section for installation details.
• All replaces are shipped Top Vent from the factory.
• Follow the chart on page 14 or page 15 for maximum ventrun and
maximum elbows.
Section3-1:ConvertingtoRearVent
R-Series units are shipped for Top Vent installations. Follow the
instructions to convert unit for Rear Vent installation:
Section3-1-1:ConvertingtheFlue
1. Remove the Rear ue cover with gasket on the ue outlet, as shown
in Figure 4. ENSURE YOU DO NOT DAMAGE THE FIBRE GASKETS.
2. Remove the Top ue collar on the ue outlet, as shown in Figure
4. ENSURE YOU DO NOT DAMAGE THE FIBRE GASKETS.
3. Install the removed Rear ue cover to the Top Vent outlet. Fasten
the cover with included hardware, as shown in Figure 4b.
Flue Cover Plate
(with gasket)
Iner
Flue Collar
(with gasket)
Inner Flue Collar
(with gasket)
Flue Cover Plate
(with gasket)
Flue Cover Plate
(with gasket)
Outer Flue
Collar (with
gasket)
Outer Flue
Collar
(with gasket)
Flue
Cover Plate
(with gasket)
4. Install the collars to the rear vent outlet using the included
hardware, as shown in Figure 4.b
5. Proceed to Section 3-1-2: Converting Pressure Sensing Tube
and Air Bae.

13
Installation
XG0225 - 170223
Figure 5 Factory installed Top Vent
Pressure Sensing Tube
Figure 5.c Removal of Top Vent air bae and pressure sensing tube
Figure 5.d Install of side air bae and pressure sensing tube.
Figure 5.b Supplied Rear Vent Pressure
Sensing Tube NOTE: Rear vent pressure sensingtubeisshippedinside the control box.
Section3-1-2:ConvertingthePressure
SensingTubeandAirBaffle
When the unit is converted from Top Vent to Rear Vent, the pressure
sensing tube must be removed and replaced with supplied Rear Vent
pressure sensing tube and air bae must be relocated as described
below.
1. Remove two screws from the air bae installed over the Top Vent
from inside the rebox. Once air bae is removed, replace the
two screws back into the same position. NOTE: Not all models
are equipped with an air bae. Only convert if available.
2. Remove Top Vent pressure sensing tube but loosening the
compression nut with a 1/2" wrench.
3. Position the supplied Rear Vent pressure sensing tube as shown
in Figure 5d. Hand tighten the compression nut by hand and then
a half-turn with a wrench.
4. Install air bae over Rear Vent from inside the rebox with two
screws provided at the Rear Vent.

14
Installation
XG0225 - 170223
This section applies to installations where the most ecient vent run is
through the roof. Refer to Appendix A - Power Vent locations, to ensure
the planned Power vent location is acceptable. Refer to the table below
for vent run requirements
Figure 6. Straight Vertical, Top or Rear Vent, Roof mounted power vent.
Figure 6.b Multi-Elbow, Top or Rear Vent, Roof mounted power vent.
Figure 6.c Multi-Elbow with downward vent run, Top or Rear Vent, Roof mounted power vent.
D**
D**
Section 3-2: Installing a Roof Mounted Vent System
VentConguration Refer to
Figure
Maximum
Vent Run
(Horizontal
+ Vertical)
Maximum
Elbows†
Straight Vertical Top or
Rear Vent Figure 6
100 Feet Six 90° or
equivalent
†
Multi-Elbow Top or
Rear Vent Figure 6.b
Multi-Elbow with 6'
downward vent run
Top or Rear Vent
Figure 6.c 70 Feet**
† One 90° elbow is equal to two 45° elbows.
** For every additional 1 foot downward vent run subtract 10 feet from
the maximum vent run.
(6' max)
(6' max)

15
Installation
XG0225 - 170223
This section applies to installations where the shortest possible vent
run is through the wall. Refer to Appendix A - Power Vent locations,
to ensure the planned Power vent location is acceptable. Refer to the
table below for vent run requirements. Please note, images are shown
without screens for clarity purposes. However, your replace should
not be operated without proper installation of screens.
Figure 6.d Straight Horizontal, Top or Rear Vent, Wall mounted power vent.
Figure 6.f Multi-Elbow, Top or Rear Vent, Wall mounted power vent.
Figure 6.g Multi-Elbow with downward vent run, Top or Rear Vent, Wall mounted power vent.Figure 6.e PVHIN58-300 Power Vent
PVHIN58-300
Min. 7 feet of pipe between replace
and power vent
D**
D**
Section 3-3: Installing a Wall Mounted Vent System
VentConguration Refer to
Figure
Maximum
Vent Run
(Horizontal
+ Vertical)
Maximum
Elbows†
Straight Horizontal Top
or Rear Vent Figure 6.d
100 Feet Six 90° or
equivalent
†
Multi-Elbow Top or
Rear Vent Figure 6.f
Multi-Elbow with 6'
downward vent run
Top or Rear Vent
Figure 6.g 70 Feet**
† One 90° elbow is equal to two 45° elbows.
** For every additional 1 foot downward vent run subtract 10 feet from
the maximum vent run.
Min. 7 feet of pipe between
replace and power vent
(6' max)
(6' max)

16
Installation
XG0225 - 170223
Connectionandinstallationofthevent
components should adhere to the following
guidelines:
Section 3-3-2: Venting Components
The following components andassociated Montigo part numbers are for
installation of a roof or wall mounted termination. Use of non-Montigo
approved parts will VOID the warranty and may impede operation of
the replace. • 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 150% 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 1½” of
overlap.
• Ensure all horizontal 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.
• FLEX PIPE CANNOT BE CUT
• Place the springs, supplied with the pipe kit (ex only), 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 rst section of
venting connected directly to the replace, oering 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.
IMPORTANT:
Please refer to your Building Envelope Engineer
or Waterproong Consultant for a review of ALL
penetrations through exterior walls or the roof.
A - Termination PVHEX58-300 Wall Mount 5"/8"
PVHFL58-300 Flush Wall Mount 5"/8"
PVVEX58-300 Roof Mount 5"/8"
PVHEX510-300 Wall Mount 5'/10'
PVHFL510-300 Flush Wall Mount 5'/10'
PVVEX510-300 Roof Mount 5'/10'
B - Frame Kits EPVRRF (Roof Mount 5"/10")
EPVRWF (Wall Mount 5"/10")
C - Flex Sections
(5/8 Vent) PFL1 (12" f/f Section)
PFL2 (24" f/f Section)
PFL3 (36" f/f Section)
PFL4 (48" f/f Section)
PFL6 (72" f/f Section)
D - Flex Sections
(5/10 Vent) RFL1 (12" f/f Section)
RFL2 (24" f/f Section)
RFL3 (36" f/f Section)
RFL4 (48" f/f Section)
RFL6 (72" f/f Section)
E - Rigid Sections
(5/8 Vent) PXT - 10 (10" f/f Section)
PXT - 20 (20" f/f Section)
PEXT - 1 (12" f/m Section)
PEXT - 2 (24" f/m Section)
PEXT - 3 (36" f/m Section)
PEXT - 4 (48" f/m Section)
PEXT - 6 (72" f/m Section)
(5/10 Vent) RXT - 10 (10" f/f Section)
RXT - 20 (20" f/f Section)
REXT - 1 (12" f/m Section)
REXT - 2 (24" f/m Section)
REXT - 3 (36" f/m Section)
REXT - 4 (48" f/m Section)
REXT - 6 (72" f/m Section)
F-Elbows
(5/8 Vent) PEL-90MM (m/m 90º Elbow)
PEL-90FF ( f/f 90º Elbow)
PEL-90FM ( f/m 90º Elbow)
PEL-45FM ( f/m 45º Elbow)
(5/10 Vent) REL-90MM (m/m 90º Elbow)
REL-90FF ( f/f 90º Elbow)
REL-90FM ( f/m 90º Elbow)
REL-45FM ( f/m 45º Elbow)
G-SupportRing&
Plate PSPXT-8 (5/8 venting)
RSPXT-10 (5/10 venting)
H - Firestop FS-8 (5/8 venting)
FS-10 (5/10 venting)
I - Heat Shield RHS101 (5"/8")
RHS102 (5"/10")

17
Installation
XG0225 - 170223
Installing a Wall Mounted RHS101 Heat shield (5"/8")
The RHS101 Heat shield must be used if vent pipe passes through a
wall or ceiling within 6' of the unit.
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. From the
outside slide the RHS101 outer section on. To complete the installation
fasten the Heat Shield Outer Section & inner section to the structure.
See Figure 7.
Figure 7. RHS101 Installation. (Install by sliding over vent pipe where it passes through the
combustible construction).
Section 3-3-3: Heat Shields
⅜'' min. Both sides Typical
⅜'' min.
⅜'' min.
Inner shield 9 ⅜''
Outer shield 10 ¼''
Combustible Framing
Installing a Wall Mounted RHS102 Heat shield (5"/10")
The RHS102 Heat shield must be used if vent pipe passes through a
wall or ceiling within 6' of the unit.
To install the RHS102, 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. From the
outside slide the RHS102 outer section on. To complete the installation
fasten the Heat Shield Outer Section & inner section to the structure.
See Figure 7.b
Figure 7.b RHS102 Installation. (Install by sliding over vent pipe where it passes through the
combustible construction).
¼'' min. Both sides Typical
¼'' min.
¼'' min.
Inner shield 11 ½''
Outer shield 10 ⅝''
Combustible Framing

18
Installation
XG0225 - 170223
Figure 8.b Control Box / Power Vent Wire Routing Diagram
Figure 8. (Control Panel Overview)
Figure 8.c (Wall Switch Wire connection)
Section 4: Wiring
Ensure the wires are properly isolated from metal parts or control
system will be damaged
CAUTION
Heat Sensor /
Conmustion Switch
Control
Box
Horizontal
Po
wer Vent
Te
rmination
Vertica
l
Power Vent
Termination
Power cable
Installation
required for either Horizontal
or Vertical Termination Vent
115Va
c 60 Hz
supply from
Distribution P
anel
Wall Switch
Power
Vent
20 foot control
cable to replace
(standard)
Left-side View Right-side View
20 foot control cable to
replace (standard)
Horizontal
Power Vent
Termination Control
Box
Power
Vent
Power cable Installation
required for either Horizontal
or Vertical Termination Vent
Wall Switch
115Vac 60 Hz
supply from
Distribution Panel
Vertical
Power Vent
Termination
Power Vent
Speed Control
Post Purge
Timer (3 min.)
Prepurge
Timer (1 min.)
Power Vent
Connector
Power Vent
Fuse (5A)
LED Power
Indicator
Control Panel
Fuse (5A)
Installing the Fireplace Control Box
Install theFireplace ControlBox inan accessiblelocation. Thelocation should
be where maintenance, adjustments and service may be made easily.
Installing the Wall Switch
The unit may be connected to a wall switch. The system operates on
a 24V AC. DO NOT connect this circuit to an external power source
LED
INDICATOR
115V
OUTLET
CONTROL
CABLE
POWER
VENT
HARNESS
WALL
SWITCH
115V
POWER
SUPPLY
FUSE

19
Installation
XG0225 - 170223
Figure 8.d Electrical control panel
Electrical control panel
115
R1 R2 R3
R1
R2
Light
PV
Plug
PV Speed
Controller
Yellow Yellow
Black
Blue
Blue
Brown
YellowBlue
Black
White
White
1
2
3
4 5
Combustion
Air
Flue
Gas
Wall
Switch
Orange
White
Black
Blk/Wht Wht/Blk
Blue
Red
Brown
NC
Combustion
Air
NO
Flue
Gas
ELECTRICAL CONTROL PANEL
R3
Gas
Valve
Wall
Switch
Fuse
110 Volts
60Hz
5A
Post Purge
Timer
Pre-Purge
Timer
Honeywell (Q3450)
Pilot Assembly
Pilot Electrical
Harness Connector
Honeywell Gas
Control (SV9501M)
Gas Control
onnector
Conduit & Wiring clearances
1”Clearance
Note:
If any of the original wire supplied with the appliance is
replaced, it must be with the same or its equivalent.
Connect the power vent power cord as outlined in the
previous section. Ensure that the proper clearances are
maintained for the wiring and conduit. When installing the
wiring it must never run above the vent run and it must be
at least 1” clear of all venting. Vent pipe

20
Installation
XG0225 - 170223
Fuel Type
• Verify that your replace is compatible with your available gas type.
• Natural Gas or Propane shown by "N" or "L" in your model number
on rating plate.
Gas Pressure
• Optimum appliance performance requires proper input pressures.
• Gas line sizing requirements will be determined in ANSI Z221.3
National Fuel Gas Code in the USA and CAN/CGA B149 in Canada.
Pressure requirements (during operation):
• The manifold outlet pressure isset from the factory to the appropriate
pressure but should be veried.
• To check pressures, control valves have a provision to remove a ⅛”
N.P.T. plug to be tted with a hose barb.
• Montigo requires a service shut o valve be located in an accessible
location to isolate the gas supply.
• Only install gas shut-o valves approved for use by the state, province,
or other governing body in which the replace is being installed.
Section 5-3: GAS CONNECTION
• See Figure 9.b 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 ½" Male NPT gas inlet.
• Purge all air out of gas line before connecting port.
• 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.
PRESSURE REQUIREMENTS
Gas Pressure Natural Gas Propane
Minimum inlet pressure 5.5in. w.c. 11in. w.c.
Manifold pressure 3.5in. w.c. 10in. w.c.
Section 5: Installing the gas line
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 a 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. A re or explosion
will occur, causing serious injury, property damage or death.
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
DANGER
When pressure testing the replace, gas line, and input system
follow the appropriate local codes for your area. DO NOT connect
the replace to pressures in excess of ½lb. This will damage the gas
control valve.
Figure 9. Pressure Requirements
Figure 9.b.b Identifying the Gas Inlet and Combustion Air Switch Sensor Line
Figure 9.b gas line access
NOTICE
1
¾”
1/2”
MPT gas
inlet