Montigo R520 Instruction Manual

Canadian Heating Products Inc. Langley, BC V4W 4A1 | Montigo Del Ray Corp. Ferndale, WA 98248
®
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
Watchyour step
Slipperyfloor
Hightemperatures
Glasshazard
Dangerof suffocation
Highvoltage
Toxic
Flammablematerials
Corrosive
Forklift trucks
Dangeroverhead crane
Explosionrisk
Oxidising
Dangerof death
Biohazard
LaserRadiation
Dangerof entrapment
Hotsurface
GeneralWarning
Blank
Gasbottles
Watchfor
fallingobjects
Electricity
Dangerfor cutter
Entrapmenthazard
Batteryhazard
Rotatingparts
Lowtemperature
Strongmagnetic field
Opticalradiation
Nonionizing
radiation
Radiation
Hazardousto the
Environment
Dangerof harming
yourhands
Irritant
Cutting
Watchyour step
Slipperyfloor
Hightemperatures
Glasshazard
Dangerof suffocation
Highvoltage
Toxic
Flammablematerials
Corrosive
Forklift trucks
Dangeroverhead crane
Explosionrisk
Oxidising
Dangerof death
Biohazard
LaserRadiation
Dangerof entrapment
Hotsurface
GeneralWarning
Blank
Gasbottles
Watchfor
fallingobjects
Electricity
Dangerfor cutter
Entrapmenthazard
Batteryhazard
Rotatingparts
Lowtemperature
Strongmagnetic field
Opticalradiation
Nonionizing
radiation
Radiation
Hazardousto the
Environment
Dangerof harming
yourhands
Irritant
Cutting
Watchyour step
Slipperyfloor
Hightemperatures
Glasshazard
Dangerof suffocation
Highvoltage
Toxic
Flammablematerials
Corrosive
Forklift trucks
Dangeroverhead crane
Explosionrisk
Oxidising
Dangerof death
Biohazard
LaserRadiation
Dangerof entrapment
Hotsurface
GeneralWarning
Blank
Gasbottles
Watchfor
fallingobjects
Electricity
Dangerfor cutter
Entrapmenthazard
Batteryhazard
Rotatingparts
Lowtemperature
Strongmagnetic field
Opticalradiation
Nonionizing
radiation
Radiation
Hazardousto the
Environment
Dangerof harming
yourhands
Irritant
Cutting
Watchyour step
Slipperyfloor
Hightemperatures
Glasshazard
Dangerof suffocation
Highvoltage
Toxic
Flammablematerials
Corrosive
Forklift trucks
Dangeroverhead crane
Explosionrisk
Oxidising
Dangerof death
Biohazard
LaserRadiation
Dangerof entrapment
Hotsurface
GeneralWarning
Blank
Gasbottles
Watchfor
fallingobjects
Electricity
Dangerfor cutter
Entrapmenthazard
Batteryhazard
Rotatingparts
XG0771 150204.3
R520
R-Series
Indoor
Resi dential
Fireplace
Installation & Maintenance Manual

Page 2 XG0771 - 150204.3
Table of Contents
R520 Power Vent Indoor Gas Fireplace
Instruction Manual Contents
Introduction 3
Safety Alerts 3
Installation 4
Section A: Before You Begin 4
Introduction to the R-Series Fireplace: 5
Section 1: Product Dimensions 6
Section 2: Framing 7
Clearances: 7
Raised Installation: 8
PVHFL510-300 8
PVHFL510-300 8
Installing the Fireplace: 9
Back framing the Fireplace 10
Recessed Installation: 11
Section 3: Venting 12
Notes For Planning 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
Bafe 13
Section 3-2: Installing a Roof Mounted Vent System 14
Section 3-2-1: Installing Roof Mounted Power Vent Module -
PVVEX510-300 15
Section 3-3: Installing a Wall Mounted Vent System 16
Section 3-3-1: Installing Wall Mounted Power Vent Modules -
PVHEX510-300 and PVHFL510-300 17
Section 3-4: Venting components 18
Section 3-5: Heat Shields 19
19
Section 4: Wiring 20
Installing the Fireplace Control Box 20
Installation of Electrical Supply 21
Installing the Wall Switch 21
Section 5: Installing the gas line 23
Fuel Type 23
Gas Pressure 23
GAS CONNECTION 23
Section 6: Testing the system 24
6-1: Testing the system before gas connection 24
Section 7: Finishing the replace 25
Finishing Around the Fireplace 26
Mantels & Surrounds 26
Section 8: Removing & Installing the Door 27
Section 9: Installing the Firestones 28
Operation 29
Section 10: Cleaning and Maintenance 30
Appendix A: Power Vent Locations 31
PV VEX510-300 Vertical Power Vent Detail 31
PVVEX510-300 Power Vent Locations 32
PVHEX510-300 Horizontal Power Vent Detail 33
PVHEX510-300 Power Vent Locations 34
PV HFL510-300 Horizontal Power Vent Detail 35
PVHFL510-300 Power Vent Locations 36
Appendix B: Warranty 37
Appendix C: State of Massachusetts 38

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.
Westrongly encourageyou toread andcarefully followthe 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 manualcovers installation,operation andmaintenance. 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.
R520N-I X 80,000 X X
R520L-I X 65,000 X X
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
MODEL Natural Gas Liquid Propane Gas Rating (BTU hr) Linear Burner w/ Glass Accessories Honeywell Hot Surface Ignition
Introduction
Page 3
XG0771 - 150204.3
R520 Power Vent Indoor Gas Fireplace
Safety Alert Key
Safety Alerts

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
frequent cleaning may be required due to excessive lint from carpeting, bedding material,
etc. It is imperative that control compartments, burners and circulating air passageways of
the fireplace are kept clean.
NOTICE
IMPORTANT MESSAGE: SAVE THESE INSTRUCTIONS
TheR520* Power Vent 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.
BEFORE YOU START:
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 efcient vent run.
■ Lay out the Vent run; calculating the required elbows
and straight runs of 5"/10" ex and/or rigid pipe.
■ 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.
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
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
Installation
R520 Power Vent Indoor Gas Fireplace
Page 4 XG0771 - 150204.3
Section A: Before You Begin
Installation

Introduction to the R-Series Fireplace:
The complete system will require a rebox, a power vent module,
an electrical control panel, and a vent system. The appropriate vent
system will connect the rebox to the power vent module and will be
placed in a vertical or horizontal location. The R-Series replace
is not a heat efcient replace and should not be used with a
thermostat to heat your home. This product is a re feature and
should only be used to enhance the ambiance of the room. Please
review the Installation Checklist on Page 4 for general information on
preparing for a successful installation of your replace.
Install location:
The R-Series 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, must 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 pathway for Power Vent installation.
Basic Operation:
The gas control components of this replace are located in the bottom
of the rebox below the burner system. All models are supplied with
a Honeywell smart valve gas control and do NOT have a variable
ame control. There are two air switches that control the gas control
system, located in the bottom of the rebox. These gas valves and
pressure switches communicate with the electrical control panel
through a ten conductor cable supplied with the replace.
To operate the replace, Montigo supplies 20' of low voltage wire
from the electrical control panel. Connect the two wire harnesses
to a standard single pole ON/OFF switch to the location of your
choice. You may extend these wires up to 100' in length with a wire
of equal quality.
CAUTION: Do NOT connect power to these wires.
ON/OFF control of this appliance can also be performed using an
optional remote control available from your Montigo dealer.
The R520* are classified under power vented fireplace systems.
Under no circumstances can these models be installed without a Power Vent Module.
For Horizontal Vent Installations, use 5”/10” Power Vent Motor PVHEX510-300 or
PVHFL510-300.
For Vertical Vent Installations, use 5”/10” Power Vent Motor PVVEX510-300.
WARNING
R520 Power Vent Indoor Gas Fireplace
Page 5
XG0771 - 150204.3
Installation

Section 1: Product Dimensions
Front View
Side View Top View
Figure 1. R520* Fireplace dimensions (Tolerance ± ⅛").
61 1/4" OD
9 1/2"
65
9/
1
6
"
36 5
/
16"
72 11/16"
39 1/16
"
18"
9 13/16"
21 3/4"
61 1/8"
5 7/8"
1
8 1/8"
OD
11 3/8"
32 15/16
"
8
3/
1
6
"
4 7/8"
9 7/8"
15 3/16"
5 3/8"
Gas Inlet
Combustion Air Switch
Sensor Line
R520 Power Vent Indoor Gas Fireplace
Page 6 XG0771 - 150204.3
Installation

Frame in the enclosure for the unit with framing materials, see
Figure 3 .
NOTE:Whenconstructing theframedopening, pleaseensure there is
access to install the gas line when the unit is installed. See Figure 16.
Clearances:
To ensure the replace operates safely, all models must maintain
the following clearances:
R520* 24 24 2 6 3 0 6
MODEL Top - Rear Vent †
Rear - Top Vent Rear - Rear Vent Sides Floor Mantel
Top - Top Vent †
† Note: C l e a r a n c e f r o m t o p o f  r e p l a c e t o a c o m b u s t i b l e c e i l i n g
within the replace enclosure.
Unprotected combustible walls which are perpendicular to the replace
opening must maintain 6" clearance, see gure 20.
Figure 2. Clearances for rear vented installation with elbow.
Figure 2a. Clearances for top or rear vented installation, straight vent
run or with elbow(s).
Venting Clearance Requirements:
Wall framing
14” Min.
Wall framing
2” Min.
24" Min
R520 Power Vent Indoor Gas Fireplace
Page 7
XG0771 - 150204.3
Installation
Section 2: Framing

Figure 3. Fireplace installation, (Rough Frame-In dimensions).
Framing Dimensions
Model Q R U
R-Series R520* 77" 45" **23"†
Determine the height of the platform based on where you want the
bottom edge of the glass to be, see gure 1 or 1a for unit dimensions.
Maintain minimum ceiling height shown in table. Build replace frame
as shown in gure 3.
Q (Opening)
R
(Opening)
U
3/4”
Plywood
Drywall
or Equiv.
Platform
** See Figure 1 or 1a.
† U is 29" for straight out the back vent run installations.
Raised Installation:
Maximum
Platform Height
Minimum Required
Ceiling Height
24" 86"
48" 110"
Figure 2b. Clearances for straight rear vented installation with
PVHEX510-300.
24"
610
34"
863
8"
203
PVHEX58-300
Stud Wall
Rear
Fireplace
Floor
Header
Termination
Mounting
Flange
24"
610
38 3
4
"
983
18 1
4
"
463
PVHFL58-300
Stud Wall
Rear
Fireplace
Floor
Header
Termination
Mounting
Flange
Figure 2c. Clearances for straight rear vented installation with
PVHFL510-300.
PVHFL510-300
PVHFL510-300
R520 Power Vent Indoor Gas Fireplace
Page 8 XG0771 - 150204.3
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-off valve; according to local gas codes. Before fastening in place line up the front face of the replace (top and bottom Figure 4). then
secure in place with 1/4"bolts and washers to the platform.
Figure 4. Fireplace installation, (Inlet Gas & Power Vent).
Installing the Fireplace:
1/2”
Supply Gas
connection
Intake / Exhaust
Vent Pipe (5”/10”)
2” Clearance
2” Clearance
R520 Power Vent Indoor Gas Fireplace
Page 9
XG0771 - 150204.3
Installation

Figure 5. Completed back frame Fireplace installation
Back framing the Fireplace
NOTE: 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.
Step 1). Cut and install one 2x4 to t horizontally under the replace throat.
Step 2). Cut and install required quantity of short ller 2x4's to t vertically under the horizontal piece.
Step 3). Cut and install four vertical 2x4's. Place 2 on each side of the replace throat.
Step 4). Install supplied steel header 1" above the throat. Attach steel header to vertical 2x4's as shown in gure 5.
Step 5). Cut and install one horizontal 2x4 below the top frame.
1” clearance
1” clearance
Model
Supplied Steel
Header
Measurements
R520* 70 1/2" x 3"
Steel header
(supplied by Montigo) 2-pcs 2 x 4 (vertical)
Both Sides Typ.
1” clearance 1” clearance
2
x 4
(horizontal)
2 x 4
(horizontal)
2 x 4
(Vertical)
R520 Power Vent Indoor Gas Fireplace
Page 10 XG0771 - 150204.3
Installation

Picture of Non combustible Header
Recessed 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 oor. Minimum clearance can be reduced to 3" for uncarpeted
ooring. Discolouration may occur due to high temperatures.
Figure 6. Recessed Fireplace installation
6” clearance
1” clearance
Recessed Floor
Steel header
(supplied by Montigo) 2-pcs 2 x 4 (vertical)
Both Sides Typ.
1” clearance 1” clearance
2
x
4
(horizontal)
2 x 4
(Vertical)
1” clearance 1” clearance
2 x 4
(horizontal )
R520 Power Vent Indoor Gas Fireplace
Page 11
XG0771 - 150204.3
Installation

Figure 7. Flue cover and collar removal, Top Vented
replace
Figure 7a. Flue cover and collar installation, Rear Vented
replace
R520 Power Vent Indoor Gas Fireplace
Page 12 XG0771 - 150204.3
Installation
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
efcient possible run to an external wall or through the roof.
Notes For Planning Venting:
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 (5" and 10") on
the ue outlet, as shown in Figure 7. ENSURE YOU DO
NOT DAMAGE THE FIBRE GASKETS.
2. Remove the Top ue collar (5" and 10") on the ue outlet,
as shown in Figure 7. ENSURE YOU DO NOT DAMAGE
THE FIBRE GASKETS.
5”Inner Flue Collar
10” Outer Flue Collar
10” Flue Cover Plate
5” Flue Cover Plate
(with gasket)
(with gasket)
(with gasket)
(with gasket)
10” Flue Cover Plate
5” Flue Cover Plate
5”Inner Flue Collar
10” Outer Flue Collar
(with gasket)
(with gasket)
(with gasket)
(with gasket)
■ 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 15 or page 19 for maximum ventrun
and maximum elbows.
3. Install the removed Rear ue cover (5" and 10") to the Top
Vent outlet. Fasten the cover with included hardware, as
shown in Figure 7a.
4. Install the collars (5" and 10") to the rear vent outlet using
the included hardware, as shown in Figure 7a.
5. Proceed to Section 3-1-2: Converting Pressure Sensing
Tube and Air Bafe.

Figure 8. Factory installed Top Vent Pressure Sensing
Tube
Figure 8a. Supplied Rear Vent Pressure Sensing Tube
Figure 9. Removal of Top Vent air bafe and pressure
sensing tube.
Figure 9a. Removal of Top Vent air bafe and pressure
sensing tube.
NOTE: Rear vent pressure sensing tube is shipped inside the
control box.
R520 Power Vent Indoor Gas Fireplace
Page 13
XG0771 - 150204.3
Installation
Section 3-1-2: Converting the Pressure Sensing
Tube and Air Bafe
When the R520* 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 bafe must be
relocated as described below.
1. Remove two screws from the air bafe installed over the Top
Vent from inside the rebox. Once air bafe is removed, replace
the two screws back into the same position.
Note: Not all models are equipped with an air bafe. Only convert
if available.
2. Remove Top Vent pressure sensing tube by loosening the ..
compression nut with a 1/2" wrench.
3. Position the supplied Rear Vent pressure sensing tube as
4. Install air bafe over Rear Vent from inside the rebox with two
screws provided at the Rear Vent.
shown in Figure 9a. Hand tighten the compression nut by
hand and then a half-turn with a wrench.
Do not over tighten.

Figure 10. Straight Vertical, Top or Rear Vent, Roof
mounted
power vent.
Figure 10a. Multi-Elbow, Top or Rear Vent, Roof mounted
power vent.
R520 Power Vent Indoor Gas Fireplace
Page 14 XG0771 - 150204.3
Installation
This section applies to installations where the most ef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.
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 10 100 Feet Six 90°
or
equivalent †
Multi-Elbow Top or Rear Vent Figure 10a
Multi-Elbow with 6' downward vent
run Top or Rear Vent Figure 10b 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.

Figure 10b. Multi-Elbow with downward vent run, Top or
Rear Vent, Roof mounted power vent.
R520 Power Vent Indoor Gas Fireplace
Page 15
XG0771 - 150204.3
Installation
D**
D**
Section 3-2-1: Installing Roof Mounted Power Vent Module - PVVEX510-300
Note: See Power Vent manual for installation instructions.
Note: See Appendix A for clearance to exterior structures.

Figure 12. Straight Horizontal, Top or Rear Vent, Wall
mounted .....................................................................
power vent.
Figure 12a. Multi-Elbow, Top or Rear Vent, Wall mounted power vent.
R520 Power Vent Indoor Gas Fireplace
Page 16 XG0771 - 150204.3
Installation
This section applies to installations where the shortest possible vent
run is through the wall. Refer to AppendixA - Power Vent locations,
to ensure the planned Power vent location is acceptable. Refer to
the table below for vent run requirements.
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 12 100 Feet Six 90°
or
equivalent †
Multi-Elbow Top or Rear Vent Figure 12a
Multi-Elbow with 6' downward vent
run Top or Rear Vent Figure 12b 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.

D**
Figure 12b. Multi-Elbow with downward vent run, Top or
Rear Vent, Wall mounted power vent.
Section 3-3-1: Installing Wall Mounted Power Vent Modules - PVHEX510-300 and
PVHFL510-300
Note: See Power Vent manual for installation instructions.
Note: See Appendix A for clearance to exterior structures.
R520 Power Vent Indoor Gas Fireplace
Page 17
XG0771 - 150204.3
Installation
D**

The following components and associated Montigo part numbers are for
installation of a roof or wall mounted Power Vent. Only use Montigo Vent
Components. Use of non-Montigo parts will VOID the warranty and may
impede operation of the replace.
A - Termination PVHEX510-300 Wall Mount
5'/10'
PVHFL510-300 Flush Wall
Mount 5'/10'
PVVEX510-300 Roof Mount
5'/10'
C - Flex Sections 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)
D - Rigid Sections 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)
E - Elbows REL-90MM (m/m 90º Elbow)
REL-90FF ( f/f 90º Elbow)
REL-90FM ( f/m 90º Elbow)
REL-45FM ( f/m 45º Elbow)
F - Support Ring & Plate RSPXT-10
G - Firestop FS-10
H - Heat Shield RHS102
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”).
Ensure the pipe ends male to female slide in a minimum of
1 1/2” of overlap.
Connect all vent sections using a minimum of three sheet
metal screws on the outer pipe ue.
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.
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.
R520 Power Vent Indoor Gas Fireplace
Page 18 XG0771 - 150204.3
Installation
Section 3-4: Venting components

Section 3-5: Heat Shields
Installing a Wall Mounted RHS102 Heat shield
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 14.
Figure 14. RHS102 Installation. (Install by sliding over
vent pipe where it passes through the combustible
construction).
Outer Shield 11 1/2”
½ ” Min. Both sides Typical
½”Min
.
½” Min.
Combustible Framing
Inner Shield 11 1/3”
R520 Power Vent Indoor Gas Fireplace
Page 19
XG0771 - 150204.3
Installation

R520 Power Vent Indoor Gas Fireplace
Page 20 XG0771 - 150204.3
Installation
Section 4: Wiring
Figure 15. R520* Series Control Box / Power Vent Wire Routing
Diagram
Installing the Fireplace Control Box
Install the Fireplace Control Box in an accessible location. The
location should be where maintenance, adjustments and service
may be made easily.
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)