Montigo R320-ST Instruction Manual

R320-ST Indoor
R420-ST Indoor
R-Series-ST
Resi
dential
Fireplace
®
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
XW2002
XW2004
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
XW2006
Installer: Leave this manual with the
appliance. Do not remove.
Consumer: Retain this manual for
maintenance and future reference. Do
not Discard.
NOTICE
XW2012
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.
NOTICE
XW2014
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
XG0772 030711
Single Sided Unit Shown
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
XW2010
XG0772 - 030711


Safety Alert Key ...................................................................................... 3
Introduction .........................................................................................3
Congratulations on your purchase ..............................................................3
Warranty and Installation Information: (See Appendix B) ..........................3
Installation .........................................................................................4
Section A: Before You Begin ......................................................................4
Important Message .................................................................................4
Before you start .........................................................................................4
Pre-Installation Checklist ........................................................................4
Understanding the Basic Operation .......................................................4
Residential R320-ST & R420-ST replace ............................................4
Section 1: Installation Overview & Product Dimensions ............................5
The R-Series R320-ST & R420-ST replaces ......................................5
Fireplace dimensions .........................................................................5
Clearances .........................................................................................5
Section 2: Framing .......................................................................................6
Rough frame-in Dimensions ...................................................................6
Fireplace Installation ...............................................................................6
Section 3: Finishing .....................................................................................7
Fireplace Screw Locations .....................................................................7
Back Framing .........................................................................................7
Installing Non-combustible Materials / Cement Board ..........................8
Installing Combustible Materials / Drywall .............................................8
Combustible Mantles and Facings .........................................................9
Fireplace Facing .................................................................................9
Mantles and Surrounds ......................................................................9
Section 4: Installing the Power Vent ..........................................................9
Installing a Roof Mounted Power Vent .................................................10
Venting Layout ......................................................................................10
Straight Venting Layout ....................................................................10
Multi-Elbow Installations ..................................................................10
Downward Vertical Venting ..............................................................10
Venting Components ............................................................................ 11
Installation of the External roof mounted power vent. .................... 11
Installing the external roof mounted power vent module................12
Installing a Wall Mounted Vertical Exterior Power Vent ......................13
Venting Layout ......................................................................................14
Multi-Elbow Installations ..................................................................14
Downward Vertical Venting ..............................................................14
Venting Components ............................................................................15
Installation of the external wall mounted power vent ......................15
Installing the external wall mounted power vent module................16
Section 5: Wiring .......................................................................................18
Installation Of Electrical Supply .................................................................18
Installing The Remote Switch ....................................................................18
HSI Wiring Schematic................................................................................19
Conduit & Wiring clearances ....................................................................19
IPI Wiring Schematic .................................................................................20
Section 6: Installing the Gas Line .................................................................21
Fuel Consumption .....................................................................................21
Pressure requirements: .............................................................................21
Gas Connection .......................................................................................21
Section 7:Removing & Installing the Door ....................................................22
Removing the doors: .................................................................................22
Installing the Door: .....................................................................................22
Section 8: Installing the Firestones ...............................................................23
Optional River Rocks .................................................................................23
Operation .......................................................................................24
Section 9: Start-up Sequence .......................................................................24
Honeywell Intermittent Pilot .......................................................................24
For Your Safety - READ BEFORE LIGHTING .........................................24
Lighting Instructions ...................................................................................24
Section 10: Cleaning and Maintenance ........................................................25
General .......................................................................................25
Cleaning .......................................................................................25
Gas Control Valve ......................................................................................25
Appendix A .......................................................................................26
Power Vent Locations.....................................................................................26
Vertical Power Vent Detail .........................................................................27
Horizontal Power Vent Detail.....................................................................27
Appendix B .......................................................................................29
Warranty .......................................................................................29
Appendix C .......................................................................................30
State of Massachusetts ..................................................................................30

Page 3
XG0772 - 030711
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

 
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
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
Power-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 Propane Venting Type Burner Type Ignition Type
R-Series R320 45,000 42,000 Top Dedicated Power Vent Linear Burner HSI Electronic Ignition
R-Series R420 55,000 55,000 Top Dedicated Power Vent Linear Burner HSI Electronic Ignition


Page 4 XG0772 - 030711
Section A: Before You Begin

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
XW2016
Important Message
Save these Instructions
The R-Series Residential R320-ST & R420-ST 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:
Pre-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 your type and location of your Power Vent
run: Roof Mounted (EDVRSPV58) or Wall Mounted
(EDVWSPV58).
■ Your termination location should be selected to provide
the shortest possible vent run.
■ Lay out the Vent run; calculating the required elbows
and straight runs of 5"/8" ex or rigid pipe.
■ Refer to the Section 4 on Page 10, "Installing the Power
Vent" for details.
■ Montigo supplies 20' of low voltage wire, which can be
spliced to any length. This wire CANNOT run in conduit
with any other wire.
■ Refer to Section 5 on Page 18, for Wiring Details.
■ The gas connection is located on the bottom side of the
replace.
■ Refer to local codes and guidelines for installation
requirements.
■ Installation and repairs should be done by a qualied
contractor and must conform to:
• Installations in Canada must conform to the current
CAN/CGA B-149.1 and .2 Gas Installation Code and
local regulations.
• Installations in the USA must conform to local
codes, or in the absence of local codes to the National
Fuel Gas Code, ANSI Z223.1-1988.
• See Appendix C for installation within the State
of Massachusetts. This replace must comply with
NFPA-54 Chapter 10.
■ Refer to Section 6 Page 21, "Installing the Gas Line" for
Details.
Understanding the Basic Operation
Residential R320-ST & R420-ST replace
The control compartment of this replace is located in the bottom
of the replace right below the burner system. All models will
be supplied with a Honeywell smart valve gas control and will
not have a variable ame control. There are two air switches
that are controlling the gas control system, and are located in
the bottom of this replace. These gas valves, and pressure
switches communicate with the electrical control panel via a six
conductor cable supplied with the replace.
To operate the replace, Montigo has supplied and installed
twenty feet of low voltage wire to this electrical control panel.
Connect the two wire harness to a standard single pole ON/
Off switch located at a location of your choice. You may also
extent these wires to any length, as long as you select a wire
of equal quality.
XW2018
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
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
Electricity
Danger for cutter
Entrapment hazard
Battery hazard
Rotating parts
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.
XW2020
DANGER
XW2020-When-Installed_[EN].pdf 1 1/24/2011 12:48:53 PM


Page 5
XG0772 - 030711

Section 1: Installation Overview and Product Dimensions
Please review the Pre-Installation Checklist on Page 4 for
general information on preparing for a successful installation
of your replace.
The R-Series Residential R320-ST & R420-ST
replaces
The R-Series Residential R320-ST & R420-ST replaces 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.
The replace dimensions are shown below:
Clearances
To ensure the R-Series Residential R320-ST and R420-ST Fireplaces
operate safely, all models must maintain the following clearances.
Unprotected combustible walls which are perpendicular to the
replace opening, must not be closer to the replace than the
required 6" clearance.
The R-Series R320-ST & R420-ST are power
vented fireplace systems. Under no circumstances
can these model(s) be installed without a power
vent module.
For regular Horizontal vent installation use 5"/8"
model EDVWSPV58 with the rough-in kit,
EDVWSPV58F for the R320-ST & R420-ST.
For regular Vertical vent installation use 5"/8"
model EDVRSPV58 with the rough-in kit, EPVF58
for the R320-ST & R420-ST.
WARNING
XW2022

Model# Top Sides Floor Mantel
R-Series R320 26" 3" 0" 6"
R-Series R420 26" 3" 0" 6"
Top View
Front View Side View
IH
C
L
C
L
L
N
M
F
O
R
G
(Overall
Height)
K
E (Opening)
D
(Opening)
A (Width)
C
J
P
B
(Height)
Q
Top View
Front View
Side View
IH
C
L
C
L
L
N
M
F
O
R
G
(Overall
Height)
K
E (Opening)
D
(Opening)
A (Width)
C
J
P
B
(Height)
Q
Top View
Front View
Side View
IH
C
L
C
L
L
N
M
F
O
R
G
(Overall
Height)
K
E (Opening)
D
(Opening)
A (Width)
C
J
P
B
(Height)
Q

A B C D E F G H I J K L M N O P Q R
R-Series R320 50¾" 43¼"15⅛" 16⅛" 37⅛" 23¾" 45⅞" 8" 5" 12" 2⅝" 5⅞" 13⅝" 19¾" 15⅛" 33½"9¾" 4⅜"
R-Series R420 62¾" 43¼" 15⅛" 16⅛" 49⅛" 23¾" 45⅞" 8" 5" 12" 2⅝" 5⅞" 13⅝" 19¾" 15⅛" 33½"9¾" 4⅜"


Page 6 XG0772 - 030711

Section 2: Framing
S (Opening) both sides typical
T (Opening)
both sides
typical
U
¾"
Plywood
Platform
Figure 2. Fireplace installation, (Rough Frame-In dimensions) Both Sides are Typical.
Step 2. 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 and rear face of the
replace (top and bottom), Figure 2a. then secure in place with 1/4"
wood screws.
Step 1. To ensure your glass viewing area is at the optimum height,
follow the gures and examples below to determine where to build
the replace platform. For example: Determine the height where
you want the bottom edge of the glass to be, then subtract 14¾"
from that dimension. The result is the dimension you will build the top
of the platform to. For example if you want the Bottom of the Glass
to be at 24" the equation is 24" - 14¾" = 9¼". So that the top of the
platform will be at 9 1/4". This dimension takes in account the
height of the platform, plywood and adequate clearances.
Figure 2a. Fireplace installation, (Inlet Gas & Power Vent) .

Model# S T U
R-Series R320 56¾" 69¼" 23¾"
R-Series R420 68¾" 69¼" 23¾"
½"
Install Montigo heat shield Part No.
RHS101 if vent passes through
the ceiling within 6’ of unit
Supply Gas
connection
Intake / Exhaust
Venting
Both
Sides
Typical
3" clearance to combustibles
around the exhaust pipe
when using firestop


Page 7
XG0772 - 030711

Step 2. Back-framing the Fireplace; installing 2 x 4's, (Typical Both
sides). Ensure you have the required 2 x 4's to complete the project.
Cut Four (4) - 2 x 4's to t under the front & rear replace throat,
(horizontal), t & remove. These must be no closer than 3" below
the bottom edge of glass. Next, cut the short 2 x 4's, to t at each
end under the previous Horizontals.
Next, cut the required quantity of short ller 2x4's under the lower
Horizontal. The number of pieces will be determined by the length,
and model of replace. (Follow Typical building codes and practices
when spacing). Next, cut the Required Left and Right Vertical 2 x 4's
and space at 3" from side of apron. Install the Two (2) Non-combustible
Headers, supplied by Montigo (one (1) per side).
Step 1: Remove screws from perimeter of glass as shown
below. The screws will be used to fasten the cement board,
provided by Montigo, to the unit in the nishing stages. Remove
the marked screws above and below the glass. Place provided
template to check screw hole positioning. Transfer template to
provided cement board to pre drill pilot holes. Refer to gures
below for Screw locations.
R420
4 Screws Top
&
4 Screws
Bottom
Front View Side View
Figure 3a. R320 Fireplace Screw Locations. Both Sides are Typical.
R320
3 Screws Top
&
3 Screws
Bottom
Front View Side View
Figure 3b. R420 Fireplace Screw Locations. Both Sides are Typical.
Section 3: Finishing
Figure 3c. Fireplace installation, (Ensure you maintain the 3" clearance to combustibles) Both Sides are Typical.
1"
Clearance
1"
Clearance
3” Clearance
to combustibles
3" Clearance
to combustibles
Non-combustible Header
(Supplied by Montigo)
2 X 4, (Top
Horizontal)
2 X 4, (Bottom
Horizontal)
2-pcs 2 x 4, (vertical)
Both Sides Typical
Both
Sides
Typical
First wood header installed
at 19” from top of glass
3” Clearance to
combustibles
First
combustible
(2) 2X4s
Space supplied
Non-Combustible Header(s)
to allow 6” of Cement board
to be fastened to
2 X 4 fillers, (Vertical) use typical
building practices when spacing
Space between
2 x 4s
R320 = 47½”
R420 = 59½”


Page 8 XG0772 - 030711

Step 3. As shown in Figure 3d; Use Cement Board, supplied by
Montigo, to overlap the new 2 x 4's and Non-combustible Header
(front & rear face) See Page 7 Figure 3c. Attach on all sides of the
glass, allowing 1/8" clearance from the rim of the replace opening.
Top piece attaches to non combustible header and replace. Bottom
piece attaches to replace and combustible horizontal framing
member. Side pieces attach to vertical 2x4s.
Non-Combustible cement board,
(Supplied by Montigo) or Equivalent
Pre-drill for sheet metal screws to fasten
cement board to
framing
Pre-drilled holes Top and Bottom using template for sheet meta
screws to fasten cement board to
unit using previous screw holes
⅛"
Sheet metal screws to attach Non-Combustible
Cement board to Steel header, (supplied by Montigo)
Clearance required
for expansion of the
fireplace when
in operation
Fasten cement board to unit using screws
removed from unit existing screw holes and
predrilled holes using sheet metal screws
Fasten Cement Board to
Non-Combustible Header using sheet
metal screws and Unit using srews
removed from unit in step 1 (see figure 3a
& 3b on page 7).
6" Height
Fasten Cement Board to Unit, using screws
removed in step 1, (see figure 3a & 3b on
page 7) and to combustible cross members
Step 4. As shown in Figure 2e; Cut standard Drywall / Wall board
to complete the installation of Both surrounds.
Figure 3e. Fireplace installation (Cut the remainder of Drywall / Wall board to complete the replace surrounds) Both Sides Typical.
Combustible Drywall / Wallboard
or Equivalent (Top, Bottom & Sides)
Figure 3d. Non-combustible Cement Board the Fireplace, (supplied by Montigo) Both Sides Typical.


Page 9
XG0772 - 030711

Figure 3f. Combustible mantles and facings. (Not to scale)
Fireplace Facing
When selecting the nish material for your replace, it is important
to remember the following:
If the surround of the replace is to be painted to match the room decor,
heat-resistant paint must be provided . Also, 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 and access to
the lower compartment.
Mantels & Surrounds
National Canadian Gas Association mantel test requirements are for
re hazard prevention to combustible materials.
Please be aware; temperatures over the mantel will rise above normal
room temperature and walls above replace may be hot to touch.
⅛" Clearance
to allow for
expansion
during
operation
First Combustible
Header @ 19"
Drywall /
Combustible
Construction
Non-Combustible
Facing Material
Non-combustible
Headers,
supplied
by Montigo
12 11 10 9 8 7 6 5 4 3 2 1
12 11 10 9 8 7 6 5 4 3 2 1
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
1
2
3
4
5
6
7
8
9
Glass
Both
Sides
Typical
Platform
Combustible Construction
allowed in shaded area
Combustible Construction
allowed in shaded area
XW2034
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, discolor-
ation or premature failure of T.V. radio,
and other electronic components.
CAUTION
When covering the upper metal
portion of the fireplace, (as shown,
Fig. 3f) with a non-combustible
material, Please Note: The decora-
tive facing materials may be
subject to temperatures in excess
of 250° F. This should be consid-
ered when selecting facing materi-
als.
CAUTION
XW2036


Page 10 XG0772 - 030711

Section 4: Installing the Power Vent
Figure 4a. Multi-elbow Venting Installations.
Multi-Elbow Installations
Multi-elbow installations are possible up to a maximum of six
at 90° elbows.
Figure 4b. Downward Venting Installations.
Downward Vertical Venting
Note: The downward vent run must not exceed 6' of vent run.
Figure 4 Typical straight Venting Installations.
Montigo supplies a variety of power venting options. The location
of the power vent should be selected and laid out to provide the
shortest possible run to an external wall or through the roof. In the
event that the external power vent is not aesthetically acceptable or
otherwise infeasible, an in-line power vent MAY (contact Montigo for
Details) be utilized.
Installing a Roof Mounted Vertical Exterior Power Vent
(EDVRSPV58)
This section applies to installations where the shortest possible vent
run is through the roof. Refer to Appendix A - Power Vent locations,
to ensure the planned Power vent location is acceptable. Once the
vent location has been established, please refer to the appropriate
section below for installation details.
Venting Layout
Selection of components and details of venting lay out should adhere
to the following guidelines:
■ Ensure there is a minimum run of 2’ of straight pipe before
the power vent
■ Ensure the maximum vent run does not exceed 80’
■ Ensure the number of 90° elbows does not exceed 6
■ Ensure the number of 45° elbows does not exceed 12
Straight Venting Layout
Venting Installation
V (Maximum Length) Max. # Elbows
80 Feet 6
Multi Elbow - Venting Installation
V1 + H1 + V2 + H2 + V3
(Maximum Length)
Max. #
Elbows
40 Feet 6
V
Elbow 1
Elbow 2
Elbow 3
Elbow 5
Elbow 4
H2
H1
V1
V2
V3
Elbow 1
Elbow 2 Elbow 3
Elbow
H1
V1
D = 6’ foot
MAX
V3
H2
Elbow 4
Multi Elbow - Venting Installation
V1 + H1 + V2 + H2 + V3
(Maximum Length)
Max. #
Elbows
80 Feet 6


Page 11
XG0772 - 030711

Installation of the EDVRSPV58 External roof mounted power vent
module.
Refer to Appendix A - Power Vent locations, to ensure the planned
Vertical Power vent location is acceptable.
The EDVRSPV58F Rough-in Frame dimensions:
The EDVRSPV58 Power Vent dimensions:
Venting Components
The following venting components and associated Montigo part
numbers are available for the EDVRSPV58:
Connection and installation of the vent components should
adhere to the following guidelines:
■ 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 all sides to any combustible material.
■ Ensure when cutting sections of rigid pipe to maintain
integrity of internal supports.
■ Place the springs, supplied with the pipe kit, between the
outer and inner pipes to keep the pipes separate and avoid
any possible hot spots.
■ Montigo recommends the use of a ex section for the nal
pipe connected directly to the replace offering greater
exibility of installation and absorption of movement.
■ All exterior joints in venting should be sealed with high heat
silicone RV230.
Top View
Front View
Ø14”
8 1/2”
19 1/4”
Ø 1/2”
2”
18”
18”
Top View
Front View
Ø 8”
14”
6”
18”
18”
A - Termination EDVRSPV58
B - Rough-in Frame EDVRSPV58F
C - Flex Sections PLF-1 (12" Section)
PLF-2 (24" Section)
PFL-3 (36" Section)
PFL 4 (48" Section)
D - Rigid Sections PEXT-1 (12" m/f Section)
PXT-20 (20" Section)
PEXT-2 (24" m/f Section)
PEXT-3 (36" m/f Section)
PEXT-4 (48" m/f Section)
E - Elbows PEL-90MM (m/m 90º Elbow
PEL-90FF (f/f 90º Elbow
PEL-90FM (f/m 90º Elbow)
PEL-45FM (f/m 90º Elbow)
F - Power Cord
Harnesses
EPVH10-10 foot power cord & harness
EPVH20-20 foot power cord & harness
EPVH30-30 foot power cord & harness
EPVH40-40 foot power cord & harness
EPVH50-50 foot power cord & harness
EPVH60-60 foot power cord & harness
EPVH70-70 foot power cord & harness
EPVH80-80 foot power cord & harness
EPVH70-70 foot power cord & harness
EPVH70-70 foot power cord & harness
EPVH80-80 foot power cord & harness
EPVH90-90 foot power cord & harness
EPVH100-100 foot power cord & harness


Page 12 XG0772 - 030711

Figure 5. Construction, Rough-in framing.
Step 1.
Construct a Vertical Chase for the termination opening to meet
the following requirements:
■ Opening Size must be: 14 1/2" x 14 1/2" x 18" Min. height.
Step 2.
Install the Vent pipe female end up, and 2" to 3" MAX. from the
top of the Constructed Chase. Also, at this point install the Electrical
harness, (EPVH-(10-100) that will communicate with the Power
Vent Module.
Figure 5a. Installation, Vertical Vent pipe. (female end top end).
Figure 5b. Installation of Rough-in Kit
Step 3.
Install the Power Vent Rough-in Kit. Pull wire harness through
the supplied hole in the bottom corner of the rough-in box, and snap
into the slot provided, (See gure 5b inset).
Figure 5c. (Fasten Rough-in Kit to framing)
Step 4.
Install fasteners around perimeter of Rough-in Kit. (Holes supplied
for ease of installation)
Figure 5d. (Installed Stainless steel cover)
Installing the external roof mounted power vent module
All venting material must be sealed with high heat
silicone sealant RV230. All venting material to be
Montigo flex pipe, with as few joints as possible.
All joints use MVA vent splice, sealed thoroughly
with silicone. Montigo will not be held responsible
for any water damage that may occur from not
installing the equipment as specified by this
document.
WARNING
XW2024
14½"14½"
18"
Vent Chase
Electrical Harness
with connection
2" to 3" Max.
Vent Pipe
Power Vent
Rough-in Kit
Electrical
Harness
Electrical Harness
Connerctor Location
Install Fasteners around
perimeter of Rough-in Kit


Page 13
XG0772 - 030711

Figure 5g. (Installation of Power Vent Module)
Install Power Vent Module
with Power / Communication
Harness
Vertical Roof Top
Power Vent
Vertical Roof Top
Power Vent Rough-
in Kit
Step 5.
Install the Power Vent, Roof-top Stainless steel cover over the
Installed Rough-in Kit. (You can see the Electrical harness connector
in the top right corner).
Figure 5e. Figure 5f.
Step 6.
Install the Power Vent Module Power / communication harness.
Hold the Power Vent in close proximity of the assembled Chase,
(with stainless steel cover attached) and plug in the Power Vent
communication / Power Cord. (Note the direction and orientation of
the plug socket). (See Figure 5e & Figure 5f)
Electrical Harness
from Power Vent
Step 7.
Install the Power Vent Module. Place the Power Vent Module
over the stainless steel cover ange and vent pipe, aligning the
Power Vent into nal position. Ensure the Harness is placed down
in the Rough-in box when placing the Power Vent Module into place.
The Power Vent Module will sit ush with the stainless steel cover
if installed correctly.
Figure 5h. (Installed Power Vent Module)
Step 8.
Install (3) three stainless steel fasteners around Power Vent
Module @120 degrees (penetrating through the inner stainless steel
vent cover)
Stainless Steel
Fasteners
■ Vent terminations can be very hot. The
termination is to be installed higher than 7 feet
above a public walkway.
■ Do not obstruct, or attempt to conceal, the vent
termination. These actions will affect the operation
of the fireplace, and may be hazardous.
■ In heavy snow areas, take extra care to
prevent snow buildup from obstructing the vent
termination.
CAUTION
XW2026


Page 14 XG0772 - 030711

Venting Layout
Selection of components and details of venting lay out should adhere
to the following guidelines:
■ Ensure there is a minimum run of 2’ of straight pipe before
the power vent.
■ Ensure the maximum vent run does not exceed 100’.
■ Ensure the number of 90° elbows does not exceed 6.
■ Ensure the number of 45° elbows does not exceed 12.
Figure 6. Typical Venting Installations.
Multi-Elbow Installations
Multi-elbow installations are possible up to a maximum of six
at 90° elbows.
Figure 6a. Multi-elbow Venting Installations.
Figure 6b. Downward Venting Installations.
Downward Vertical Venting
Note: The downward vent run must not exceed 6' of vent run.
Installing a Wall Mounted Vertical Exterior Power Vent
(EDVWSPV58)
This section applies to installations where the shortest possible vent
run is through an exterior wall. Refer to Appendix A - Power Vent
locations, to ensure the planned Power vent location is acceptable.
Once the vent location has been established, please refer to the
appropriate section below for installation details.
Once the vent location has been established, please refer to the
appropriate section below for installation details.
All venting material must be sealed with high heat
silicone sealant RV230. All venting material to be
Montigo flex pipe, with as few joints as possible.
All joints use MVA vent splice, sealed thoroughly
with silicone. Montigo will not be held responsible
for any water damage that may occur from not
installing the equipment as specified by this
document.
WARNING
XW2024
Venting Installation
V + H (Maximum Length) Max. #
Elbows
100 Feet 6
Multi Elbow - Venting Installation
V1 + H1 + V2 + H2 + V3 = H3
(Maximum Length)
Max. #
Elbows
100 Feet 6
Multi Elbow - Venting Installation
V1 + H1 + D + H2
(Maximum Length)
Max. #
Elbows
40 Feet 6
H
V
Elbow 1
Elbow 2
Elbow 3
Elbow 5
Elbow 4
Elbow 6
H3
H2
H1
V1
V2
V3
H2
H1
VD


Page 15
XG0772 - 030711

Venting Components
The following venting components and associated Montigo part
numbers are available for the EDVWSPV58:
Connection and installation of the vent components should
adhere to the following guidelines:
■ 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 all sides to any combustible material.
■ Ensure when cutting sections of rigid pipe to maintain
integrity of internal supports.
■ Place the springs, supplied with the pipe kit, between the
outer and inner pipes to keep the pipes separate and avoid
any possible hot spots.
■ Montigo recommends the use of a ex section for the nal
pipe connected directly to the replace offering greater
exibility of installation and absorption of movement.
■ All exterior joints in venting should be sealed with high heat
silicone RV230.
Installation of the EDVWSPV58 external wall mounted power vent
module.
Refer to Appendix A - Power Vent locations, to ensure the planned
Vertical Power vent location is acceptable.
A - Termination EDVWSPV58
C - Flex Sections PFL-1 (12" Section)
PFL-2 (24" Section)
PFL-3 (36" Section)
PFL-4 (48" Section)
D - Rigid Sections PEXT - 1 (12" m/f Section)
PEXT - 2 (24" m/f Section)
PEXT - 3 (36" m/f Section)
PEXT - 4 (48" m/f Section)
EPVH10 -10 foot power cord and harness
EPVH20 -20 foot power cord and harness
EPVH30 -30 foot power cord and harness
EPVH40 -40 foot power cord and harness
EPVH50 -50 foot power cord and harness
EPVH60 -60 foot power cord and harness
EPVH70 -70 foot power cord and harness
EPVH80 -80 foot power cord and harness
EPVH90 -90 foot power cord and harness
EPVH100 -100 foot power cord and harness
F - Power Cord
Harnesses:
E - Elbows PEL-90MM (m/m 90° Elbow)
PEL-90FF (f/f 90° Elbow)
PEL-90FM (f/m 90° Elbow)
PEL-45FM (f/m 45° Elbow)
PXT-20 (20" section)
B - Rough-in Frame
The EDVWSPV58 Power Vent dimensions:
The EPVF58 Rough-in Frame dimensions:
9 3/4"
10 9/16"
5
9.0
11 1/16"
11 1/16"
11 1/16"
10 9/16"
5
9.0
14 1/4"
14 1/16"
1 1/2"
4 9/16"
8
12 1/8"
9 11/16"
12 5/16"
4
9 11/16"
ISOMETRIC VIEW
EPVF58 DIMS (2).pdf 1 3/7/2011 9:16:30 AM
EPVF58


Page 16 XG0772 - 030711

Figure 7. Framing the Opening for Power Vent
14 1/2”
14 1/2”
(Opening)
(Opening)
Step 2.
Insert the Power Vent Rough-in Box as shown in Figure 7a.
Fasten the Box securely in place with Screws or nails. Apply exterior
sheathing and nishing if required.
Step 3.
Next, remove the bottom collar and conduit mounting frame as
shown Figure 7b. (Place removed hardware in a handy location for
re-assembly).
Figure 7a. Orientation, Placing the Power Vent Inner Box
Framing
Rough-in Frame
Fasteners
Figure 7b. Installation of Rough-in Kit
Installing the external wall mounted power vent module
Step 1. Construct a frame for the termination opening to meet the
following requirements:
■ Opening Size must be: 14 1/2" x 14 1/2".
Figure 7c. Installation of Power Vent Conduit
Power Vent Conduit
Strain Relief
Nut
Step 4.
Insert the conduit from the Power Vent Module into the rough-in
frame through the two top right entry holes. Remove the nut from the
supplied strain relief and place as shown, Figure 7c.
Strain Relief
Figure 7d. (Installing Conduit connector & conduit mounting frame)
Power Vent Conduit
Strain Relief & tightened nut
Power Vent
Connector
Conduit
mounting
frame
Step 5.
Securely fasten bottom Collar pan into the Rough-in frame using
the existing hardware, (4-pcs). Tighten Strain Relief nut onto Strain
relief.
Step 6.
Pull Power Vent Connector, (from behind) half-way through
supplied hole in conduit mounting frame, and snap into place, (notches
in two plastic wing clips. Orientation not critical).
Tightened hardware, 4-pcs.
Step 7.
Fasten Conduit mounting frame into place using existing hardware,
(6-pcs). (Coil conduit in behind cover.)


Page 17
XG0772 - 030711

■ Vent terminations can be very hot. The
termination is to be installed higher than 7 feet
above a public walkway.
■ Do not obstruct, or attempt to conceal, the vent
termination. These actions will affect the operation
of the fireplace, and may be hazardous.
■ In heavy snow areas, take extra care to
prevent snow buildup from obstructing the vent
termination.
CAUTION
XW2026
Step 8.
Install the Power Vent Power / communication harness. Hold
the Power Vent in close proximity of the assembled Rough-in Kit,
and plug in the Power Vent communication / Power Cord. (Note the
direction and orientation of the pins inside the Power Vent connector,
snap together). (Figure 7f).
Step 9.
Install the Power Vent. Place the Power Vent into the Rough-in
frame, aligning the Power Vent into nal position. Ensure the Harness
is placed down in the Rough-in box when placing the Power Vent.
(Secure the Power Vent in Place with the supplied hardware).
Figure 7f. (Installation of Power Vent communication harness)
TOP of Power Vent,
(Note Quantity of
louvers).
Note louver
direction
Tightened hardware,
4-pcs.
Communication
Harness.
Figure 7g. (Completed Installation of Power Vent)
Figure 7e. (Assembled Rough-in Kit)
Tightened hardware, 6-pcs.
Installed Power Vent
Connector


Page 18 XG0772 - 030711

Section 4: Wiring
Figure 9. RESCB (Control Panel Overview)
Installation Of Electrical Supply
The R-Series Residential R320-ST & R420-ST Fireplaces are supplied
with an external electrical Control Panel pre-wired by the factory. The
power control box is connected to the replace with a 20 foot long 6
conductor cable that will communicate with the replace. The control
panel should be located in a location that would be accessible when
the replace in nished.
The power cord from the power vent module pugs into the side of
this panel. A 20 foot low voltage wire is attached and connected to
this panel as well. Connect a single pole On/Off switch (Black and
White) to these two wires at a location of your choice, (See Installing
the Remote Switch).
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 electrically grounded in accordance
with local codes or, in the absence of local codes, with the National
Electrical Code, ANSI/NFPA 70-1987.
Installing The Remote Switch
The R-Series Residential R320-ST & R420-ST Fireplaces may be
connected to a wall switch or a hand-held remote. The valve operates
on a 24V circuit. DO NOT connect the gas valve to an external circuit.
The external electrical panel supplied with the replace is equipped
with a 20 foot low voltage wire, for connecting to a wall switch of
your choice. Should you require a longer switch wire, replace this
wire to any length with a wire of equal quality. Additional length are
available upon request.
Figure 10. R-Series Residential Power Vent Module
Left-side View
Power Vent
Speed Control Power Vent Speed Control
Right-side View
LED Indicator
Fuse
110V Power Supply
Wall Switch 6 - conductor
communication
cable
Figure 11. (Remote Switch Wire connection)
Figure 8. (Fireplace to Control Panel Harness)
Gas Control
Wiring & Air
Proving
Switch
Vent Speed
Control
Terminal Block
Power Vent
Motor
Indicator
light
Fuse
Ignitor
operation
Lights
115V Power
Supply
Wall
Switch
Pre-purge
Module
Post-purge
Module
The valve has a 1/2 minute Time-On Delay to
clear All possible build up of burned gas within
the System.
After this Time-On Delay the fireplace will
proceed with the Initiated Start-Up Sequence has
completed.
CAUTION
XW2028
Wall Switch


Page 19
XG0772 - 030711

Figure 12. R-Series Residential R320-ST & R420-ST HSI Wiring Schematic
Figure 12b. Conduit and Wiring Clearances.
Conduit & Wiring clearances
Connect the wiring to the replace as outlined in the R-Series
Residential R320-ST & R420-ST schematic, gure 12.
Connect the wiring to the power vent 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.
1” Clearance
If the information in these instructions is
not followed exactly, a fire or explosion
may result causing property damage,
personal injury or death.
WARNING
XW2008
Blk / Wht
Brn
Gas
Valve 1
LV Wall
Switch
Gnd Green
Wht / Blk
Blk / Wht
Wht / Blk
Red
Blu
Combustion
Air Switch Flue Gas
Switch
1 2 3 4 5 6 7 8
NC NO
Fireplace
Pre-purge
Time-On delay
Post-purge Module
115V
HSI Wiring Schematic


Page 20 XG0772 - 030711

If the information in these instructions is
not followed exactly, a fire or explosion
may result causing property damage,
personal injury or death.
WARNING
XW2008
IPI Wiring Schematic
Green
8
2
PLUG
Timing Adj.
White L1
Black L2
Brown
Blue
Orange
Blue
Black
Yellow Yellow
Black
White
White
Yellow
Blue
5
4
13
7654321
PV
R2R1
24V 115V
8V
115V
R2
R1
Pre-Purge
Time-On delay
NC NO
Gas
Valve 1
LV wall
Switch
Combustion
Air Switch
Flue Gas
Switch
Wht \ Blk
Blk \ Wht
Wht \ Blk
Blk \ Wht
Red
Blu
Brn
Gnd
Green
TR1
Post-Purge Module
Figure 12. R-Series Residential R320-ST & R420-ST IPI Wiring Schematic