Montigo L38DF series Instruction Manual

L38DF Indoor
L-Series
Residential
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
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
Installation & Maintenance Manual
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
XG0180 150204.1
Canadian Heating Products Inc. Langley, BC V4W 4A1 | Montigo Del Ray Corp. 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 future reference
and maintenance.
NOTICE
Table of Contents
L38DF* Indoor Gas Fireplace
XG0180 - 150204.1
Instruction Manual Contents
Safety Alerts 3
Introduction 3
Section A: Before You Start 4
Rating Plate Sample 5
Section 1: Installation Overview and Product Dimensions 6
Section 2: Framing 7
Clearances 8
Section 3: Venting 9
Section 3-1: Converting To Rear Vent 9
Section 3-2: Installing a Roof Mounted Direct Vent Termination
(PVTK-1) 10
Section 3-2-1: Venting Layout 10
Section 3-3: Installing a Wall Mounted Direct Vent Termination 12
Section 3-3-1: Venting Layout: Wall mounted termination. 13
Section 3-3-2: Venting Components 17
Section 3-3-3: Heat Shields 18
Section 4: Wiring 19
Section 5: Installing the Gas Line 21
Section 5-1: Fuel Conversion 21
Section 5-2: Gas Pressure 21
Section 5-3: Gas Connection 21
Section 6: Finishing 22
Section 7: Screen Installation and Removal 23
Section 8: Installing & Removing the Door 24
Section 9: Installing the Accessories 25
Standing (Continuous) Pilot Ignition (SIT NOVA 820) 26
SIT Proame 2 Electronic Ignition 27
Maintenance 28
Lighting Instructions 28
General 28
Hi-Lo Burner Adjustment: (SIT Nova 820). 28
Hi-Lo Burner Adjustment: (SIT Proame 2). 28
Pilot Burner Adjustment. 28
Troubleshooting: 29
SIT Nova 820: 29
SIT Proame 2: 29
Replacement Parts: 30
Appendix A: Venting Terminations 31
Appendix B: Warranty 32
Appendix C: State of Massachusetts 33
Warning:

Page 3
Indicates a hazardous situation which, if not
avoided, WILL result in death or serious
injury or property damage.
Indicates a hazardous situation which, if not
avoided, COULD result in death or serious
injury or property damage.
Indicates a hazardous situation which, if not
avoided, WILL result in minor or moderate
injury.
Addresses practices that are important, but
not related to personal injury
DANGER WARNING
CAUTION NOTICE
L38DF* Indoor Gas Fireplace
Safety Alert Key
Introduction
XG0180 - 150204.1
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
Introduction
Congratulations on your purchase of a Montigo Fireplace.
With over 30 years of experience, Montigo is committed to providing you
with a gas replace that is not only a beautiful addition to your space, but
that is also designed and manufactured to the highest safety, reliability
and engineering standards.
We strongly encourage you to read and carefully follow the instructions
laid out in this Installation, Operation and Maintenance Manual and retain
it for your future reference. Pay special attention to all cautions, warnings,
and notices throughout this manual intended to ensure your safety.
This manual covers installation, operation and maintenance. Lighting,
operation and care of this replace can be easily performed by the
homeowner. All installation and service work should be performed by a
qualied or licensed installer, plumber or gas tter as certied by the state,
province, region or governing body where the replace is being installed.
This installation, operation and maintenance manual is applicable to the
models described in the table. Refer to your rating plate to verify included
options. Throughout this instruction guide, instructions are applicable to
all models designated as L38DF* unless otherwise noted.
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.
Safety Alerts
MODEL Natural Gas Liquid Propane Gas Rating (BTU hr) Traditional Burner / Logset Contemporary Burner w/ River rock Linear Burner w/ Glass media Accessories Standing Pilot Ignition Honeywell HSI Ignition SIT Electronic Ignition
L38DFN X 25,000 X X
L38DFN-F X 25,000 X X
L38DFL X 25,000 X X
L38DFL-F X 25,000 X X

Page 4
L38DF* Indoor Gas Fireplace
XG0180 - 150204.1
Installation
Section A: Before You Start
IMPORTANT MESSAGE: SAVE THESE INSTRUCTIONS
The L38DF* Direct Vent replace must be installed in accordance with
these Instructions. Carefully read all the Instructions in this manual
rst. Consult the Local Gas Branch to determine the need for a permit
prior to starting the installation. It is the responsibility of the installer to
ensure this replace is installed in compliance with the manufacturers
instructions and all applicable codes.
BEFORE YOU START:
Installation Checklist
Determine the desired install location of your replace.
See Section 1, Dimensions on Page 5, and refer to the Framing
Section 2 for details.
Select the location of your termination and resulting vent run.
Yourselectedterminationlocationmust be thehighestpoint
in the Direct Vent installation.
Should it be impossible to meet the venting requirements laid
out in Section 3: Venting, please contact Montigo regarding the
use of a Montigo Power Vent.
Lay out the Vent run; calculating the required elbows and straight
runs of 5"/8" flex and/or rigid pipe.
Layout Electrical Requirements Refer to Section 4: Wiring, for
Details.
Refer to Section 5: Installing the Gas Line, for details on the
gas connection and access.
Refer to local codes and guidelines for installation requirements.
Installation and repairs should be done by a qualied
contractor and must conform to:
• Installations in Canada must conform to the local codes or in the
absence of local codes to the current version of Natural Gas and Propane
Installation Code, CSA B149. Electrical Installations must conform to
the local codes or, in the absence of local codes, to the current version
of Canadian Electrical Code, CSA C22.1.1
• Installations in the USA must conform to the local codes or in the
absence of local codes to the current version of National Fuel Gas
Code, ANSI Z223.1/NFPA 54. Electrical Installations must conform to
the local codes or, in the absence of local codes, to the current version
of the National Electrical Code, ANSI/NFPA 70. See Appendix C for
installation within the State of Massachusetts..
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
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
WARNING
A barrier designed to reduce the risk of burns from hot viewing glass is provided with this
appliance and shall be installed for the protection of children and other at-risk individuals.
If the barrier becomes damaged, the barrier shall be replaced with the manufacturer’s
barrier for this appliance.
WARNING
Any safety screen, guard, or barrier removed for servicing an appliance must be replaced
prior to operating the appliance.

Page 5
L38DF* Indoor Gas Fireplace
XG0180 - 150204.1
Installation
Rating Plate Sample
Figure A: Rating Plate for standing pilot (SIT) Figure B: Rating Plate for IPI eletronic ignition
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LB1223-V5.1 SIT IPI -with screen DEC06.2014
  
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    
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 
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Teklynx LabelView Demo
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LBL1205-V6.1 Stand. Pilot- Screen DEC06.2014
  

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 
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    
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
  
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  
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

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


    

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
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
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 
 
 


 



Teklynx LabelView Demo

Page 6
L38DF* Indoor Gas Fireplace
XG0180 - 150204.1
Installation
Section 1: Installation Overview and Product Dimensions
Figure 1. Fireplace dimensions. (Tolerance ± ⅛").
Pleasereviewthe Installation Checklist onPage4 for general information
on preparing for a successful installation of your replace.
The L38DF* replace may be installed in any location that maintains
proper clearances to air conditioning ducts, electrical wiring and plumbing.
Safety, as well as efciency of operation, should be considered when
selecting the replace location. Select a location that does not interfere
with room trafc, has adequate ventilation and offers an accessible path
for Direct Vent installation.
The replace dimensions are shown below:
Side View
35 1
4
"
895
OPENING
19 3
8
"
493
OPENING
51
4
"
133
47
8
"
123
11
4
"
32
35 5
8
"
906
11 3
8
"
290
37 3
4
"
959
8"
203
5"
127
29 1
2
"
749
18 1
4
"
462
29"
737
8"
203
5"
127
21 7
8
"
554
Front View
Top View

Page 7
L38DF* Indoor Gas Fireplace
XG0180 - 150204.1
Installation
Section 2: Framing
Note: Images are shown without screens for clarity purposes. However,
your replace should not be operated without proper installation of
screens.
Frame in the enclosure for the unit with framing materials. The framed
opening for the assembled replace is 37 3/4" wide, x 35 1/4" high x 20
1/8" deep, see Figure 2
.
NOTE: When constructing the framed opening, please ensure there is
access to install the gas line when the unit is installed, see Figure 21.
Figure 2. Framing dimensions, Straight wall.
* When sheetrock is not used
behind the replace, framing depth
20 1/8" may be reduced by 5/8".
Figure 6. Non Combustible Framing for Top Vent or Rear Vent, with
alcove. Note: Straight through the wall rear vent available for
Natural Gas only.
75
0" clearance
to corners only
37 3/4
54 1/4” Figure 5. Combustible Framing for shelves over the replace, Top vent.
Figure 4. Combustible Framing for shelves over the replace, Rear
vent. Note: Straight through the wall rear vent available for
Natural Gas only.
35 1/4”
9”
29”
Combustible Header
Combustible Shelf
21 3/4”
12”
max.
REAR VENT
N.G ONLY
1” min.
35”
MEL Short
90° elbow
35 1/4”
17 1/2”
Combustible Header
Combustible Shelf
1” min.
2
01/8”
37 3/4”
35 1/4”
*
Figure 3. Minimum Corner framing dimensions
Figure 4. Combustible Framing for Rear Vent, with shelf above replace.
L.P. & N.G
1” Min
35 1/4”
Combustible Header,
with Supplied shield.
Combustible
Shelf
9”
1” Min
L.P. & N.G
29”
Non-Combustible
materials. Alcove
over fireplace.
M
in.
10.5”
door
opening
3”
Rear
Vent
Ceiling
Floor
Top Vent
N.
G
.
&
L.P.
12”
max.
1” min.
header
REAR VENT
N.G ONLY
Non-combustible
Min 1”
84”

Page 8
L38DF* Indoor Gas Fireplace
XG0180 - 150204.1
Installation
Clearances
1” clearance is maintained on sides and bottom of vent runs and 2”
above horizontal vent runs to any combustible material.
MODEL Top - Rear vent †
Top - Top vent † Rear Sides Floor Mantel
L38DF* 9" 17 1/2" 1" 1" 0" See Section
6 Finishing
around the
replace
† Note: Clearance from top of replace to a ceiling within the replace
enclosure.
6”
Installing The Standoffs
To avoid elevated mantel temperatures, all L38DF* gas
replaces are required to have the supplied standoffs installed.
The replace is supplied with two standoffs. Bend and install these
standoffs on top of the replace ensuring that the height of the standoff
maintains a 6" clearance.
Figure 7. Installing the standoff's.
Figure 8. Installing the Nailing Flange Extension.
Installing the Nailing Flange Extension
Once the replace is placed into the rough framed opening, the supplied
Nailing Flange Extension (Part No. H38074) must be fasten securely
into place, with nails or wood screws. as shown in Figure 8.
Note: The nailing ange extension can be substituted with a piece of
NON-Combustiblematerial of the same size and thermal characteristics,
ie: cement board or equivalent. This is recommended in applications
where the facing materials will not adhere to the metal nailing ange.
6"
When installing a shelf over the top of the replaces, the following
guidelines must be adhered to:
For Rear Vent applications, the minimum clearance is 1" from the rear
of the replace to a wall, or any combustible materials, and 9" clearance
from the top of the replace to the underside of any combustible shelf
materials.
For Top Vent applications, the minimum clearance is 1" from the rear
of the replace to a wall, or any combustible materials, and 17 1/2" to
the underside of any combustible shelf materials.

Page 9
L38DF* Indoor Gas Fireplace
XG0180 - 150204.1
Installation
Section 3: Venting
Montigo supplies a variety of direct venting and termination options.
The direct vent termination location MUST be selected such that
it is the highest point in the venting assembly. It should also be
selected such that it provides the shortest vent run possible. Should
it be impossible to ensure that the termination is the highest point or
should it be impossible to meet the venting guidelines laid out below
please contact your Montigo dealer to discuss power venting options.
NOTES FOR PLANNING VENTING:
Venting can originate from the unit through the top or
through the rear
Venting can terminate through the roof or through an
exterior wall.
Refer to Appendix A - Termination Locations to ensure the
planned termination location is acceptable.
Once the termination location has been established, refer
to the appropriate section below for installation details
All replaces shipped from the factory are Top vent.
Silicone application is NOT required when joining Montigo
vent pipes and components.
Note: Images are shown without screens for clarity purposes. However,
your replace should not be operated without proper installation of
screens.
Figure 9. Flue cover and collar removal, Top Vented replace.
Figure 9a. Flue cover and collar installation, Rear Vented replace.
Section 3-1: Converting To Rear Vent
Use the following instructions to convert an L38DF* for Rear Vent use:
1. Remove the Rear ue cover and gasket (5" and 8") on the ue
outlet, as shown in Figure 9.
2. Next, Remove the Top ue collar's (5" and 8") on the ue outlet,
as shown in Figure 9.
3. Install the (removed) Rear ue cover and gasket material, to the
Top vent outlet. Fasten the cover with included hardware, as
illustrated Figure 9a.
4. Install the (5" and 8") collars to the rear vent outlet using the
included hardware, as illustrated Figure 9a.
5”Inner Flue Collar
8”Outer Flue Collar
Flue Gasket
Flue Cover Plate
Flue Gasket
Flue Cover Plate
8” Outer Flue Collar
5” Inner Flue Collar

Page 10
L38DF* Indoor Gas Fireplace
XG0180 - 150204.1
Installation
Figure10.Top vent,Roofmounted terminationwithno offsetinventrun.
Figure 10a. Top vent, Roof mounted with 1 offset (1 offset= two 90°
bends).
Figure 10b. Top vent, Roof mounted with 2 offsets (1 offset= two 90°
bends).
Roof mounted Terminations
The following details are some possible congurations for Roof mounted
terminations. See below.
Support ring
Support plate
Firestop
32’ max.
2’ min.
PVTK1
Termination
Support ring
Support plate
Firestop
32’ max.
2’ min.
Obstacle
PVTK1
Termination
Section 3-2: Installing a Roof Mounted Direct Vent
Termination (PVTK-1)
This section applies to installations where the direct vent termi-
nation will be roof mounted.
Section 3-2-1: Venting Layout
Selection of components and details of venting lay out should
adhere to the following guidelines:
The maximum termination point is 32’ above the replace.
(NOTE: if the maximum termination height is used, the ame
pattern may be affected).
The Vertical termination must be a minimum 2’ higher than
where the termination exits the roong materials, (asphalt
shingles,cedarshakes,etc). This distance should be measured
from the high side of the roof slope where the ue ashing
intersects the roong materials. (see Figures 10 - 10c).
For a detailed diagram of allowed termination locations, see
Appendix A.
Termination location must be a minimum 6’ from a mechanical
air inlet.
A maximum of two offsets (each offset is made up of 2-90°
bends) may be made for vertical vent runs.
Firestops must be installed as required by National & local codes.
Ensure all horizontal runs are supported with a minimum of 3
supports per 10’ of venting for vertical vent runs.
Install all roof ashing and storm collars as shown.
PEXT
PEXT-10
Adaptor
Flue
Collar
Support straps or
support plate & ring
2’ min.
Firestop
Firestop
Firestop
3
2’ max Support plate
& ring
Obstacle
PVTK1
Termination

Page 11
L38DF* Indoor Gas Fireplace
XG0180 - 150204.1
Installation
Figure 10c. Rear vent, Roof mounted venting (1 = 90° bend).
Support ring
Support plate 32’ max
Termination
12”
Max.
PVTK1
PEXT Sections
Note: Images are shown without screens for clarity purposes. However,
your replace should not be operated without proper installation of
screens.

Page 12
L38DF* Indoor Gas Fireplace
XG0180 - 150204.1
Installation
1
12”
2”
12”
12”
Section 3-3: Installing a Wall Mounted Direct
Vent Termination
Thissectionappliestoinstallationswherethe direct vent termination
will be wall mounted.
Installation of Termination with built in frame
ATerminationwitha Built-In Frame is installed during framing of a structure.
1. Frame the termination opening to 11" x 11".
2. Install exterior sheathing to the structure framing.
3. Fasten the termination to the sheathing using a minimum of 4 screws.
MSR Frame
PTO-4 (5"/8")
Termination
PTO-4F (5"/8")
Termination
Figure 11. Installing a PTO-F termination.
Figure 11a. Installing a PTO termination with the MSR frame.
Figure 11d. Installing the VSS Vinyl Shield.
Installation of a termination shield for Vinyl Siding
The VSS Termination shield is installed when the exterior of a structure
is clad with Vinyl siding. It is placed directly above, and on-centre with
the termination.
Installation of termination frame at time of framing
Terminations with a MSR frame allow the installation of the frame prior
to installation of the termination.
1. Frame the termination opening to 12" x 12".
2. Secure the MSR Frame to the exterior sheathing of the structure.
3. Fasten the termination to the MSR Frame using a minimum of 4 screws.
Figure 11b. Installing a PTO termination with the BSR frame.
Installation of termination frame at time of framing in Masonry
Terminations with a BSR frame allow the installation of the frame in
masonry prior to the installation of the termination
1. Frame the BSR opening to 12" x 12".
2. Secure the BSR Frame to the exterior sheathing of the structure.
3. Fasten the termination to the BSR Frame using a minimum of 4 screws.
1. Frame the MOSR opening to 12" x 12".
2. Fasten the MOSR frame to the interior side of the studs, concrete,
or nished wall construction using a minimum of 4 screws.
3. Insert the termination into the MOSR frame as shown here, (from
the inside) and attach to the MOSR by installing a min. quantity of
4 bolts into the threaded nuts on the MOSR Frame.
Installation of termination from inside structure
A Termination with a MOSR Frame is installed from the inside of the
structure. These are commonly used in high-rise construction.
MOSR Frame
PTO-4 (5"/8")
Termination
Figure 11c. Installing a PTO termination with MOSR frame.
BSR Frame MTKOG (5"/8")
Installing Heat Guards over Terminations is recommended in
installations where the termination is located within 7' feet above
grade, or above a pedestrian walkway, and may be Required by code
in Public areas.
1. Ensure that the two long mounting brackets are facing the bottom
ofthe termination. (Seeinset).Thiswill provide moreheat protection
at the top of the termination, where temperatures are highest.
2. Attach to the faceplate of the termination using four sheet metal
screws.
Figure 12. Installing a PTO termination heat guard.
1
1”
11”
Framing
Exterior
Sheathing
Fastening Hardware,
minimum 4-screws
Framing
Exterior
Sheathing
Fastening Hardware,
minimum 4-screws
PTO-4 (5"/8")
Termination
Framing
Exterior
Sheathing
Fastening Hardware,
minimum 4-screws
12”
12”
Fastening Hardware,
minimum 4-screws
Framing,
concrete or
other
materials
Exterior
Sheathing,
concrete or
other materials
Exterior Vinyl
siding
PTO-4 (5"/8")
Termination
VSS Vinyl shield

Page 13
L38DF* Indoor Gas Fireplace
XG0180 - 150204.1
Installation
The Venting Graph: L38DF*
Measure the vertical height from the replace hearth to the centre of the
termination and the horizontal run from the replace ue collar to the wall
ange of the termination. Plot on the Venting Graph Figure 13 with an 'X'.
If the 'X' falls on or above the top boundary of the shaded area, the
installation is acceptable.
Example A: (Acceptable Installation)
If the vertical dimension from the hearth is 108" and the horizontal
run to the wall ange of the vent termination is 180", this would be
an acceptable installation.
Example B: (Acceptable Installation)
If the vertical dimension from the hearth is 60" and the horizontal
run to the wall ange of the vent termination is 72", this would be
an acceptable installation.
Example C: (Unacceptable Installation)
If the vertical dimension from the oor of the replace is 60" and
the horizontal run to the wall ange of the vent termination is 144",
this would not be an acceptable installation.
Figure 13. L38DF* Top Vent Venting Graph for wall mounted
terminations.
Figure 13a. Top Vented, wall mounted installation with one 90° bend.
The vent run must comply with Venting Graph for Top vent, wall mounted
terminations, Figure 13.
Figure 13b. Top Vented, wall mounted Multi-elbow installation. See
Venting Graph for Top vent, wall mounted terminations, Figure 13.
Section 3-3-1: Venting Layout: Wall mounted termination.
Selectionofcomponentsanddetails of venting layout should adhere
to the following guidelines:
Vent terminations must not be recessed in walls or siding.
For Heat Shield requirements see Section 3-3-3.
Once the proposed venting layout has been determined refer to
Figure 13 or 15 to ensure the layout is acceptable.
Notes Wall Mounted Terminations: TOP VENT
All measurements for vertical or horizontal runs are measured
from center of the vent pipe.
Venting runs must fall within the limits set by the venting graph,
see Figure 13
Wall mounted Terminations
The following details are some possible congurations for Wall mounted
terminations.
Solid Section
Flex Section
Hearth
15’foot Max.
Heat
Shield
Termination
Exterior
Wall
Heat
Shield
Termination
Hearth Exterior
Wall
35"Min.
36" Max.
Flex or Rigid
section
A
C
B
36”
36 35” If your installation does not fall
within the venting graph parameters
contact a local Montigo Dealer for
Power Venting options.
Unacceptable vent run
within shaded area.
Acceptable vent run
within non-shaded area.

Page 14
L38DF* Indoor Gas Fireplace
XG0180 - 150204.1
Installation
Figure13c.Top Vented, wall mounted RetractedMulti-elbowinstallation.
See Venting Graph for Top vent, wall mounted terminations, Figure 13.
Heat Shield
96”Min.
120” Max
Note: Images are shown without screens for clarity purposes. However,
your replace should not be operated without proper installation of
screens.

Page 15
L38DF* Indoor Gas Fireplace
XG0180 - 150204.1
Installation
Figure 14. Corner Rigid installation. Figure 14a. Corner Flex installation. (NG Models Only)
45° Corner Installation.
Attach an PEL-45 (45° elbow) directly onto the ue collar. Cut the PXT-
20 to suit, and attach it to the PEL-45. Slide the replace into position
and attach to the termination.
45° or less Corner Installation.
Use an PTO-3 termination and an PFL-1 or PFL-2/PFL-2 (12" or 24"
compressed length) and a frame, if appropriate. Flex may be turned to
obtain desired degree of angle required but must not exceed 45°.
Note: Through the wall venting kits are also available for both the
Straight and the Corner Installation. The Kit includes a heat shield, a
PFL-12 (f/f) exible pipe, and a termination with or without a mounting
frame.
PEL-45 Elbow
PEL-90 Elbow
PXT-18
Corner installation is available for L38DF* TOP VENT UNITS ONLY.
Ensure minimum vertical venting height of 36” is maintained in corner installations.
IMPORTANT

Page 16
L38DF* Indoor Gas Fireplace
XG0180 - 150204.1
Installation
21 3/4”
12”
A
B
C
46”
42”
Figure 15. Rear Vent Venting Graph for wall mounted terminations.
Figure 15b. Rear Vented, wall mounted Multi-elbow termination
installation. The vent run must comply with the Venting Graph for Rear
vent, wall mounted terminations, Figure 15.
Figure 15a.Straight run, Rear Vented, wall mounted termination for
L38DF*, Note: Straight through the wall rear vent available for
Natural Gas only.
21 3/4”
PXT Extension
RHS101 Heat
Shield
Termination
Hearth Exterior
Wall
NOTE:
12” MAX. horizontal
run with no vertical lift.
12” MAX.
If your installation does not fall
within the venting graph para-
meters, please contact Montigo
for Power Venting options.
Notes Wall Mounted Terminations: Rear Vent
■ All dimension lengths for vertical or horizontal runs are measured
from center of the vent pipe.
■ Vent runs must fall within the limits set by the venting graphs,
see Figure 15.
■ Fireplace must be converted to Rear Vent conguration prior to
running vent, see Figure 9 and 9a.
The Venting Graph: L38DF*
Measure the vertical height from the replace hearth to the centre of the
termination and the horizontal run from the replace ue collar to the wall
ange of the termination. Plot on the Venting Graph Figure 15 with an 'X'.
If the 'X' falls on or above the top boundary of the shaded area, the
installation is acceptable.
Example A: (Acceptable Installation)
If the vertical dimension from the hearth is 120" and the horizontal
run to the wall ange of the vent termination is 138", this would be an
acceptable installation.
Example B: (Unacceptable Installation)
If the vertical dimension from the hearth is 48" and the horizontal run to
the wall ange of the vent termination is 96", this would be would not
be an acceptable installation.
Example C: (Unacceptable Installation)
If the vertical dimension from the oor of the replace is 72" and the
horizontal run to the wall ange of the vent termination is 120", this
would not be an acceptable installation.
Unacceptable vent run
within shaded area.
Acceptable vent run
within non-shaded area.
30” Max.
46” Min.
12”
Max.
Flex or Rigid
Section
24 1/4”
Min.
21 3/4”
Natural Gas only

Page 17
L38DF* Indoor Gas Fireplace
XG0180 - 150204.1
Installation
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.
Section 3-3-2: Venting Components
The following components and associated Montigo part numbers for
installation of a roof or wall mounted termination. Use only Montigo
Vent Components. Use of non-Montigo parts will VOID the warranty
and may impede operation of the replace.
Use any combination of rigid and ex pipe as required and in
any orientation (Male connectors can face in any direction).
Flex sections may be stretched up to 50% of their total length
(e.g. a 24” section maybe stretched to 36”).
Connect all vent sections using a minimum of three sheet metal
screws on the outer pipe ue.
Ensure the pipe ends male to female slide in a minimum of 1
1/2” of overlap.
Ensure all 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 thefemaleendonly.
Ensure when cutting sections of rigid pipe to maintain integrity
of internal supports.
Place the springs, supplied with the pipe kit, between the outer
and inner pipes to keep the pipes separate and avoid any
possible hot spots.
A - Termination PTO4 (3" Length)
PTO4F (3" Length)
PVTK1SS
B - Frame Kits MSR (Stucco Frame)
MOSR (Stucco Frame)
BSR-4 (4" Brick Frame)
BSR-6 (6" Brick Frame)
C - Flex Sections PFL - 1 (12" f/f Section)
PFL - 18 (18" f/f Section)
PFL - 2 (24" f/f Section)
PFL - 3 (36" f/f Section)
PFL - 4 (48" f/f Section)
PFL - 6 (72" f/f Section)
D - Rigid Sections PXT - 5 (5" f/f Section)
PXT - 10 (10" f/f Section)
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)
E - Elbows PEL-90MM (m/m 90ºElbow)
PEL-90FF ( f/f 90ºElbow)
PEL-90FM ( f/m 90ºElbow)
PEL-45FM ( f/m 45ºElbow)
F - Support Ring & Plate PSPXT-8
G - Firestop FS-8
H - Roof Flashing PRF-7 (1/12 - 7/12 pt.)
PRF-12 (7/12 - 12/12 pt.)
I - Heat Shield RHS101
J - Heat Guard MTKOG
Please refer to your building evelope engineer or waterproofing consultant for
a review of ALL penetrations through exterior walls or the roof.
IMPORTANT

Page 18
L38DF* Indoor Gas Fireplace
XG0180 - 150204.1
Installation
Section 3-3-3: Heat Shields
Installing a Wall Mounted RHS8 Heat shield
The RHS8 Heat shield CANNOT be used WITHIN 36" horizontal or
60" vertically of the replace, (see gure 16a). For applications within
these dimensions the RHS101 Heat Shield MUST be used.
To install the RHS8, frame an opening in combustible construction,
Figure 16 below. Slide the Heat shield in place over the vent pipe
which attaches to the replace. After the replace and vent pipe has
been installed, clearances should match the dimensions in Figure 16.
Figure 16. RHS8 Installation. (Install by sliding over vent pipe where it
passes through the combustible construction).
Figure 16a. RHS8 Installation. (Minimum requirements).
Figure 17. RHS101 Installation. (Install by sliding Outer Section over
vent pipe where it passes through the combustible construction.
Figure 17a. Heat Shield. After sliding the outer section in place.
Figure 17b. RHS101 Installation.
Installing a Wall Mounted RHS101 Heat shield.
The RHS101 Heat shield MUST be used where the RHS8 Termination
(Figure 16 and 16a) CANNOT be used. Use the RHS101 where any
of the dimensions are within the parameters shown, Figure 16a.
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 see Figure 17. To complete the
installation fasten the Heat Shield Outer Section & Termination frame
to the structure Figure 17a.
RHS8 Heat Shield
1” Min. Both sides Typical
1” Min.
1” Min.
Combustible Framing
RHS8 Heat
Shield
36” Min
60” Min.
Termination
Termination
Drywall / sheetrock
RHS101 Heat Shield, inner Section
RHS101 Heat Shield
O
uter Section
Combustible
framing
Termination
Drywall / sheetrock
RHS101 Heat Shield, inner Section
RHS101 Heat Shield
Outer Section
Vent pipe, from fireplace
Outer Shield 10 1/4”
3/8” Min. Both sides Typical
3/8” Min.
3/8” Min .
Combustible Framing
Inner Shield 9 3/8”
Note: Images are shown without screens for clarity purposes. However,
your replace should not be operated without proper installation of
screens.

Page 19
L38DF* Indoor Gas Fireplace
XG0180 - 150204.1
Installation
Models Included
L38DFN-F
L38FDFL-F
Figure 18. Wiring Diagram for the SIT Proame 2 Electronic Ignition
Manifold Pressure
Test Connection
Wall Switch
Power
Generator
Pilot Adjustment Screw
Inl
e
t Pr
essu
r
e
'Hi-Lo' Adjustment Knob
Gas Control Knob (Shown in “Pilot” position)
Figure 19. Wiring Diagram for SIT Nova 820 gas and pilot.
Models Included
L38DFN
L38DFL
Section 4: Wiring
1.5V AA type
1.5V AA type
1.5V AA type
1.5V AA type
BLACK
WHITE
GREEN
To PPO
SPARK
SENSOR
RED
BLACK
BATTERY
PACK
TO ON/OFF
WALL SWITCH
YELLOW/GREEN
ORANGE
GREEN
6
10
4
6
3
4
OPTIONAL CPI/IPI SWITCH
BLUE
WHITE
X1
X5
X4
X3
X2
LED Lights
LED1 - Red LED
LED2 Amber LED
3.15A FUSE
SW1
BLUE
RED
OPTIONAL
X10
X11
X12
X13

Page 20
L38DF* Indoor Gas Fireplace
XG0180 - 150204.1
Installation
Installing the remote On/Off Wall Switch
The L38DF* gas valve may be connected to a wall switch. Do NOT
connect any external power to the remote switch. The valve will
generate its own power on a millivolt circuit or will draw its power from
an AC Connection inside the replace, depending on the model of the
unit. Use only low voltage wire, and DO NOT connect any external
power to the remote switch.
Refer to Figure 18 or 19 for wiring requirements.
NOTE: The switch location must not exceed 30' from the replace.
NOTE: If any of the original wire supplied with the appliance is replaced,
it must be replaced with the same type, or its equivalent.