Montigo L52DF-ST Instruction manual

www.montigo.com
XG0811 Canadian Heating Products Inc. Langley, BC V4W 4A Montigo Del Ray Corp. Ferndale, WA 98248 081009
L52DF-ST
Indoor
Installation Operation & Maintenance Manual
Check local codes and read all instructions prior to installation.
L52DF-ST Gas Fireplace
f i r e f e a t u r e
L52DF-ST Indoor Shown
For Your Safety:
Do not store or use gasoline or other flammable vapors and liquids in the
vicinity of this or any other appliance.
Safety Notice:
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.
®
C US
Warning:
Improper installation,adjustment,alteration,serviceor maintenancecan cause
injury or property damage. Refer to this manual. For assistance or additional
information consult a qualied installer, service agency or the gas supplier.
Warning:
What to do if you smell gas
• Do not try to light any appliance.
• Do not touch any electrical
switch; do not use any phone in
your building.
• 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 re department.
• Installer: Leave this manual
with the appliance.
• Consumer: Leave this
manual for future reference.

Page 2
L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
f i r e f e a t u r
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Congratulations
Congratulations on selecting a FireFeature gas replace, an ela-
gent and well designed gas replace built to your specications.
The Firefeature gas replace you have selected is designed to
provide the utmost in safety, reliability, and engineering stand-
ards.
As the owner of this new replace, you'll want to read and care-
fully follow all the instructions contained in this Installation,
Operations and Maintenance manual. Pay special attention to all
cautions, warnings, and Important warnings.
This owner's manual should be retained for future reference. We
suggest that you keep it with all your other important documents
and product manuals.
The information contained in this owner's manual, unless noted
otherwise, applies to all models, and gas control systems.
Your new FireFeature gas replace will give you years of
durable, reliable use. Welcome to the FireFeature family of gas
replace products.
Safety Alert Key:
• DANGER! Indicates a hazardous situation which, if not avoided will result in death or serious injury.
• WARNING! Indicates a hazardous situation which, if not avoided could result in death or serious injury.
• CAUTION! Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
• NOTICE: Used to address practices not related to personal injury.
•Important: Used to address practices not related to personal injury.
Warning:
Read this manual before installing, operating or troubleshooting this
appliance. Please retain this owner's manual for future reference.
Congratulations
Safety Alert Key
Introduction............................................................................... 3
Installation
Installing and Framing the Fireplace.............................. 4
Installing the Gasline...................................................... 5
Vent Installation.............................................................. 5
Installation Requirements .................................. 5
Installing the Remote Switch ............................. 5
Vent Terminations .............................................. 6
  InstallingtheNailingange................................ 6
Top Vent Runs...........................................................7 - 8
 Finishingaroundthereplace
Fireplace Facing ................................................ 9
Mantels and Surrounds ..................................... 9
Power Vent Installation (Selected models)................... 10
Wiring ......................................................................... 10
Wiring for the Gas Control / Pilot...................... 10
Removing and Installing the Door................................ 11
Table Of Contents
Operation .........................................................................12 - 15
Maintenance ....................................................................15 - 17
Troubleshooting.....................................................16 - 17
Spare Parts .................................................................. 17
Warranty ................................................................................. 18
Appendix
A. Termination Locations.............................................. 19
B State of Massachusetts / Amendment ..................... 20
Notes ......................................................................... 21

Page 3
L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
f i r e f e a t u r
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Introduction
Thank You for choosing a Montigo Gas Fireplace.
About this Fireplace:
The L52DF-ST (See-thru) isareplacewithalinear-styleburner.This
replacecannotbeconverted;andisOnlyavailableasaTopVent.The
L52DF-ST is available in the models below
The L52DF-ST (See-thru) is rated for Natural Gas at 40,000 Max. BTU/H
(11.73) Kilowatts Input and 34,000 Min. BTU/H (9.97) Kilowatts.
► L42DF-ST; Top Vent, (Millivolt Pilot).
► L52DF-ST-I; Top Vent, Intermittent Pilot (HSI).
► L52DF-ST-A; Top Vent, American Flame (Electronic Ignition ).
This manual covers installation, operation and maintenance. Lighting,
operation and care of this replace can be easily performed by the
homeowner. However, all installation and service work should be
performedbyaqualiedorlicensedinstaller,plumber,orgastterwho
isqualiedorlicensedbythestate,province,region,orgoverningbody
in which the appliance is being installed.
This manual covers all models and unless otherwise specied, the
designation L52DF-ST refers to all variations of the model above.
Sectionswhicharespecictoaparticularvariationaremarkedwitha
symbol, plus the appropriate model number.
Warranty and Installation Information:
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.
Installations in Canada must conform to the current CAN/CGA B-149.1
and .2 Gas Installation Code and local regulations. If the optional air-
circulatingfankit isinstalled,itmustbeelectricallygroundedinaccordance
with CSA C22.1 Canadian Electrical Code Part 1 and/or Local Codes.
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. If the
optional air-circulating fan is installed, it must be grounded in accordance
with local codes or, in the absence of local codes, with the National
ElectricalCode,ANSI/NFPA 70-1987. WithintheStateofMassachusetts
thisreplacemustcomplywithNFPA-54 Chapter 10.
CAUTION!
Due to its high operating temperatures, the 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.
WARNING!
When this appliance is installed directly on carpeting, tile or any
combustiblematerialotherthanwoodooring,itmustbeinstalled
on a metal or wood panel extending the full width and depth of
the appliance.

Page 4
L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
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Installation
Installing The Fireplace Shell
Thereplacemaybeinstalledinanylocationthatmaintainsproperclear-
ances 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 Direct Vent installation. Refer to page 4 - Vent Installation
for more information.
Thereplacedimensionsareshownbelow:
Figure 2. Framing dimensions.
Framing
Top View
Front View Side View
Clearances
These clearances apply to all dimensions except the framed opening,
where the clearance to combustibles is 0". The L52DF-ST clearance to
unprotectedcombustiblewallswhichareperpendiculartothereplace
opening, must not project beyond the shaded area shown in Fig. 24.
For protection against freezing temperatures, it is recommended that
outer walls of the chase be insulated with a vapor barrier. This will reduce
thepossibilityofacold-airconvectioncurrentonthereplace.
Figure 1. Fireplace dimensions.
* Clearance from the top of the to a combustible ceiling within the
enclosure.
** Refer to page 14.
6 3/4”
5 1/4”
E
B
Figure 2a. Securing the replace to the framing.
Frame the fireplace cavity according to Figure 2.
Slide the fireplace into the cavity. Tack four studs (Vertical) in place
as shown in Figure 2a. Secure the fireplace in position by nailing into
these cleats. (Minimum 2" clearance must still be maintained around
the vent pipes.)
L52-ST Fireplace Dimensions
A
52
B
33
1
/
4
C
47 2
1
/
2
D
21
1
/
8
E F G H
23
7
/
8
58 51
I
8
J
4
1
/
4
K L R
L52DF-ST 12 N/A
WARNING!
When this appliance is installed directly on carpeting, tile or any
combustiblematerialotherthanwoodooring,itmustbeinstalled
on a metal or wood panel extending the full width and depth of
the appliance.
M O
L52DF-ST 39 60 23
3
/
4
N
Framing Dimensions
Both walls Typical. May
not be exactly as shown.
N
O
M
Clearance to Combustibles
L52DF-ST
Top (Top Vent )
Sides
Floor
Mantel
30”
1”
0”
4”
60”

Page 5
L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
f i r e f e a t u r
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Installation
Installing The Gas Line
ThegaslinemustbeinstalledbeforenishingtheL52DF-ST Fireplace.
Natural Gas requires a minimum inlet gas supply pressure of 5.5" W.C.
&amanifoldpressureof3.5"W.C.Propane Gas requires a minimum
inletgassupplypressureof11"W.C.&amanifoldpressureof10"W.C.
Provision must also be made for a 1/8" N.P.T. plugged tapping and be
accessible for test gauge connection immediately upstream of the gas
supplycontrolstotheappliance.Thereplacegasconnectionandthe
main operating gas valve is located behind the removable trim at the
bottom of the unit and need only be attached to the gas line with an
approvedtting,asrequiredbytheapplicable installation codes.
To access the replace gas connection the main burner must be
removed as shown below in gure 5a.
•Onlyusegasshut-offvalvesapprovedforusebythestate,province,
region, or governing body, in which the appliance is being installed, or
as required by the applicable installation codes.
•Flexiblegasconnectorsmustnotexceed3feetinlength,unlessitis
allowable within applicable installation codes.
Note: After gas line is connected, each appliance connection,
valve and valve train must be checked while under normal
operating pressure with either a liquid solution, or leak
detection device, to locate any source of leak. Tighten any
areas where bubbling appears or leak is detected until
bubbling stops completely or leak is no longer detected.
DO NOT use a flame of any kind to test for leaks.
Figure 5a. Gas line access.
The appliance and its individual shut-off valve must be disconnected
from the gas supply piping system during any pressure testing of that
system at test pressures in excess of 1/2 psig (3.5 kPa).
The appliance must be isolated from the gas supply piping system by
closing its individual manual shut-off valve during any pressure testing
of the gas supply piping system at test pressures equal to or less than
1/2 psig (3.5 kPa).
Vent Installation
This section covers the installation of direct venting and terminations.
Installation Requirements
QL52DF-STreplacesarecertiedforusewithMontigoStandardSeries(5"
/ 8") venting components.
QMinimum clearance to combustible construction around the vent pipe is 1"
on all sides, except on horizontal venting where the top of the pipe must
have a clearance of at least 2".
QUseonlycertiedMontigoventcomponents.(Useofotherpartswillvoid
theMontigowarranty,andmayimpedetheoperationofthereplace.)
QAll joints must be secured with a minimum of two screws per joint
QVent terminations must not be recessed in walls or siding
QHorizontal runs must be supported by a minimum of two supports per hori-
zontal run. A minimum of one screw on each side of support is also required
QFlex vent sections may be stretched up to 50% of their total length (eg. a
24" section may be stretched to 36")
QFlex vent sections over 6 feet must fall within the limits set by the venting
graphandmusthaveaminimumverticalriseof3inchesperfootofex.
QSolid vent sections may be cut less than half way from the female end
QVenting components can be used in any combination of solid/rigid pipe or
expipeandinanyorientation(Maleconnectorscanfaceinanydirection)
Installing The Remote Switch
The L52DF-ST's gas valve, located behind the lower Horizontal Panel,
may be connected to a wall switch. The valve generates its own power
on a millivolt circuit. Use only low voltage wire, and DO NOT connect
any external power to it.
Note:Theswitchlocationmustnotexceed30'fromthereplace.
Gasline Access
0.875 dia.
6
to center
2 1/2
Cautions:
QVent terminations can be very hot. If the termination is
lessthan7feetaboveapublicwalkway,itshouldbetted
withacertiedMontigoHeatGuard.(Partno.PTKOG).
QDonotobstruct,orattempttoconceal,theventtermination.
Theseactionswillaffecttheoperationofthereplace,
and may be hazardous.
QIn heavy snow areas, take extra care to prevent snow
buildup from obstructing the vent termination.
QUseMontigoVSSVinylHeatShieldwhenusingonapplica-
tions with vinyl siding to guard against possible damage.

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L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
f i r e f e a t u r
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Installation
Installing Terminations with Built-In Frames
Installing Terminations with MSR Frames
12
12
1. Frame the termination opening to 12" x 12".
2. Fasten the termination to the studs using a minimum of 4 screws.
11
11
1. Frame the termination opening to 11" x 11".
2. Fasten the termination to the studs using a minimum of 4
screws.
Installing Terminations with MOSR Frames
1212
12
MOSR
1. Frame the termination opening to 12" x 12".
2. FastentheMOSRframetotheinteriorsideofthestudsusinga
minimum of 4 screws.
3. InserttheterminationintotheMOSRframeasshownhere,and
attach by screwing through the four pilot holes in the termination.
MSR
PTO-3 (5"/8")
PTO-3F (5"/8")
PTO-3 (5"/8")
PTKOG (5"/8")
1. Ensure that the two long mounting brackets are facing the bottom
ofthe termination.(See inset).Thiswill provide more heatprotection
at the top of the termination, where temperatures are highest.
2. Attach to the faceplate of the termination using four sheet metal
screws.
3. IfinstallingtheterminationoverVinylsiding, UsetheVSSTermination
shield. Montigo Installation document, XG1301.
Installing Heat Guards over Terminations
Figure 6. Installing the VSS Vinyl Shield.
Figure 5a. Installing a PTO termination.
Figure 5b. Installing a PTO termination with the MSR frame.
Figure 5c. Installing a PTO termination with the MOSR frame.
Figure 5d. Installing a PTO termination heat guard.

Page 7
L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
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120
A
B
C
Installation
Top Vent Venting Runs
L52DF-ST
Example A: (Unacceptable Installation)
If the vertical dimension from the hearth is 84" and the horizontal run
to the wall flange of the vent termination is 60", this would NOT be an
acceptable installation.
Example B: (Acceptable Installation)
If the vertical dimension from the hearth is 108" and the horizontal run to
the wall flange of the vent termination is 120", this would be an Acceptable
installation.
Example C: (Uncceptable Installation)
If the vertical dimension from the floor of the fireplace is 72" and the
horizontal run to the wall flange of the vent termination is 84", this would
NOT be an acceptable installation.
Figure 9c. L52DF -ST Top Vent Venting Graph
NOTES: All dimension lengths for vertical or horizontal runs are
measured from centre of the vent pipe.
Venting runs must fall within the limits set by the venting
graph (see Figure 9a).
L52DF-ST
Figure 13. Retracted Installation using a combination of solid and ex
venting. Use the vent graph to determine your allowable
run, then select appropriate components.
B. Vertical (Through-The-Roof) Installations
5/8" with option for 4/7" (Power Vent Units ONLY)
Vertical rise >12' can be reduced (on applicable models).
Vertical Terminations must be installed:
•minimum 2' (two feet) above the highest point where
vent passes through the roof.
•minimum 6' (six feet) from a mechanical air inlet
•minimum 18" (1 1/2 feet) from a parapet wall.
 Maximumventheightis:35'feetabovereplace.
Note: Flame characteristics will change if the maximum vent height
is used.
Minimum clearances 2" from vent to all combustible materials must
be maintained.
A maximum of two offsets (each offset has two 90° bends) may be
made and shall not exceed total length of 25% of the vertical vent
height, when measured center to center of piping.
height, when measured center to center of piping.
Example: Typical vent installation.
20' vertical vent
5" / 8" Venting
A - Termination PVTK-1
B - Flex Sections PFL-1 (12" Section)
PFL-2 (24" Section)
PFL-3 (36" Section)
PFL-4 (48" Section)
C - 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)
D - Support Ring
&Plate
PSPXT-8
E - Firestop PS-8
F - Roof Flashing PRF-7 (1/12 - 7/12 pt.)
PRF-7 (7/12 - 12/12 pt.)
Power Vent models, LDVPV47
EDVRSPV58, and EDVWSPV58
to be used within the shaded area of
graph. (See Index of this guide for
applicable Product page).
RHS8
1 MIN
1 MIN
1 MIN. Both
sides Typical
RHS8 Heat
Shield
Figure 8a. RHS8 Installation. (Install by sliding over vent pipe where it
passes through the combustible construction.

Page 8
L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
f i r e f e a t u r
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Installation
Figure 15. Straight, vertical venting showing required PXT-10 adaptor
(supplied with the PVTK-1 termination).
* For venting MIN 1" clearance to all vertical combustibles,
MIN 2" to all horizontal combustibles.
Figure 16. Vertical venting with 1 offset (1 offset= two 90° bends).
Figure 17. Vertical venting with 2 offsets (1 offset= two 90° bends).
32’
PEXT
PEXT
PXT-10
Figure 18. Reducing Vertical Vent from 5/8" to 4/7".
Reduced Vertical Installation
(Available on Linear Power Vent models ONLY)
It is possible to reduce vertical vent runs from 5"/8" venting to 4"/7"
venting. Reduced vertical venting may only be used when the Linear
(In-line) Power Vent is required. This is commonly due to longer than
normal vent runs or unusually long horizontal Vent runs.
NOTES: All dimension lengths for vertical or horizontal runs are
measured from centre of the vent pipe.
Venting runs must fall within the limits set by the venting
graph (see Figure 7b).

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L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
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Installation
Finishing Around the Fireplace
Combustible mantels and mouldings may be safely installed over the
topandonthefrontofthereplaceprovidedthattheydonotproject
beyond shaded area shown in Figure 24. Side wall clearances are 3".
Combustible surrounds may be installed with 3" clearance to the side
ofthereplaceasshowninFigure 25.
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.
Figure 24. Combustible mantles and facings.
Horizontal Run (in)
Mantels & Surrounds
NOTE: National Canadian Gas Association mantel test requirements
areforrehazardpreventiontocombustiblematerials.
New technology, to meet consumer and government demands for the
wise use of energy, has prompted us to manufacture many models of
replaceswhicharehot,fuelandenergyefcient.
Pleasebeaware;temperaturesoverthemantelwillriseabovenormal
roomtemperatureandwallsabovereplacemaybehottotouch.
Warning:
When covering the upper metal portion of the replace with a non-
combustible material Please Note: The decorative facing materials
may be subject to temperatures in excess of 250° F. This should be
considered when selecting facing materials.
We recommend careful consideration be given to the effects of elevated
mantel temperatures which may be in excess of product design, for
example:candles,plasticorpictures. Thiscancausemelting,deformation,
discoloration or premature failure of T.V. and radio components.
Installing The Horizontal &
Vertical Exterior Power Vent
A Power Vent is required where the Termination is located too far
away from the gas fireplace and/or if the vent run is beyond the scope
of this document, or the specications recommend vent augmenta-
tion. There are four 4/7 Power Vent models available. These Power
Vents are required for Superior venting, safe operation & years of
trouble free operation.
The available Montigo Power Vent models are:
LDVPV47 (Linear, Interior In-line Power Vent, document, XG0700).
EDVPV47 (External Power Vent Module, document, XG0750).
EDVRSPV47 (Exterior Vertical Roof mount 4/7 stainless steel Power
Vent system, document, XG1303)
EDVWSPV47 (Exterior Horizontal Wall mount 4/7 stainless steel Power
Vent system, document, XG1302).
Figure 25. Combustible surrounds, (Both Sides Typical).
Header
Drywall/
Sheetrock
3”
Painting:
Special care is recommended by the Master Painters and Decorators
Association,whenpaintingthereplacesurrounds,toselectandapply
a quality Alkyd sealer prior to the applying of latex paints. This is to
prevent leaching of water from evaporation and causing a brownish
staining effect to paint over coats.
L52DF-ST

Page 10
L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
f i r e f e a t u r
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Installation
Wiring
Gas Control and Pilot Wiring L52DF-ST-I
Figure 26. Wiring for the L52DF-ST-I with Honeywell gas control and pilot.
Honeywell (Q3450)
Pilot Assembly
Pilot Electrical
Harness Connector
Honeywell Gas
Control (SV9501M)
Gas Control
Connector
Junction Box
115VAC
24VAC
40 VA
Transformer
Black
White
Green
Gnd Screw
Wall Switch
Fan Plug
Receptacle
Removing and Installing
the Doors
Removing the doors:
The doors are removed in a few simple steps. Follow these Steps below
to remove the Horizontal access panel, unlatch the door buckles and,
remove the door. Replace in reverse order.
Figure 28a. Loccate the door buckles. (Both Sides Typical)
Door Latch Hook
Door Latch Slot
Hand-hold
Release the Door Buckles
Figure 28. Removing and installing the the Horizontal Acess Panel
Locate the Door Buckles:
Figure 28b. Door buckle Tool
1
Step 4:
Firmly grasp hand-hold
end of Door buckle tool
and place the machined
end in the slot under door
frame. (as shown)
Figure 28c.
Step 2:
Step 3:
Step 1:
Remove the Horizontal cover
byplacingngersinbothnger
holes, then pushng away from
you and lifting out. Place it
aside during maintenance or
cleaning.
Install in reverse order.
Installed Gas
Valve Cover
Finger Holes
Remove the Horizontal Access Pan-
L52DF-ST

Page 11
L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
f i r e f e a t u r
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Installation
To install the door, hook the top edge of the door frame into place. Lower
thedoorintoposition andfollowthepreviousstepsshowninreverse order.
Installing the Door:
2
Step 5:
Ensurethetoolisrmly
in the lower end of the
slot, (as shown), Then pull
toward you (Caution: hold
the tool securely).
3
Step 6:
Pull hard if necessary to
release the spring ten-
sion. (Caution: The latch
springs back with force,
hold the tool securely).
4
Step 7:
Remove the tool from
the latch slot. Ensure the
latches are hanging freely,
the hook end is released
from the bottom of the door.
(Repeat all 4-steps for the
remaining latches).
Figure 28d.
Figure 28e.
Figure 28f.
Step 8:
Grasp the Door on either side, usually midway and lift upward, lift
thedoorcarefullyupandawayfromthefrontofthereplace.See
gures 28g. Place the Door aside in a safe place while maintenance
and / or cleaning is being performed.
Figure 28g. Removing and installing the glass doors. (Both Sides
Typical)
Removing the Door:
Installing the Glass Beads and
Optional Rocks
Beads
The L52DF-ST is supplied with three bags of Designer Glass beads.
Place them randomly across the pan, surrounding the burners as
shown in Figure 27c.
Optional River Rocks
The L52DF-ST has optional cultured rocks which mimic real stone,
yet designed to withstand a high temperature environments. These
may be spaced at random, or in a visual patter of your preference.
Ensure the rocks or beads do not cover the Burners.
Figure 27c. Installation with glass beads .
L42DF-ST
WARNING!
Do not attempt to clean glass when hot.
Do not clean glass with abrasive materials as any glass etching
may cause premature glass failure.
Donotoperatethisreplacewithouttheglassdoor,orwitha
broken glass door.
L52DF-ST

Page 12
L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
f i r e f e a t u r
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Operation - Model L52DF-ST
L52DF-ST
WARNING: If you do not follow these instructions exactly, a re or explosion may result
causing property damage, personal injury or loss of life.
QIf you cannot reach your gas supplier, call the Fire
Department.
C. Use only your hand to push in or turn the gas control knob.
Never use tools. If the knob will not push in or turn by hand,
don't try to repair it, call a qualified service technician. Force
or attempt to repair may result in a fire or explosion.
D. Do not use this appliance if any part has been under water.
Immediately call a qualified service technician to inspect the
appliance and to replace any part of the control system, and
any gas control which has been under water.
A. This appliance has a pilot which must be lighted by hand.
When lighting the pilot, follow these instructions exactly.
B. BEFORE LIGHTING smell all around the appliance area for
gas. Be sure to smell next to the floor because some gas is
heavier than air and will settle on the floor.
What To Do If You Smell Gas:
QDo not try to light any appliance.
QDo not touch any electrical switch; do not use any phone
in your building.
QImmediately call your gas supplier from a neighbour's
phone. Follow the gas supplier's instructions.
To Turn Off Gas To Appliance:
3. Push in gas control knob slightly and turn clockwise to
"Off". Do not force.
4. Replace the lower Horizontal access panel.
1. Turn off remote switch.
2. Lift out the lower Horizontal access panel.
1. STOP! Read the safety information above on this label.
2. Lift out the lower Horizontal access panel.
3. Push in gas control knob and turn clockwise to "OFF."
4. Wait five (5) minutes to clear out any gas. Smell for gas,
including near the floor. If you then smell gas, STOP! Follow
"B" in the safety information above on this label. If you don't
smell gas, go to the next step.
5. Locate pilot burner (See illustration at right.) and follow steps
below.
6. Turn knob on gas control counter clockwise to
"PILOT."
7. Push in gas control knob completely and hold. Light with Piezo
Igniter button. Continue to hold the control knob in for about
(1) minute after the pilot is lit. Release the knob and it will pop
back up. Pilot should remain lit. If it goes out repeat steps 3
through 8.
QIf knob does not pop up when released. Stop and
immediately call your service technician or gas
supplier.
QIf the pilot will not stay lit after several tries, turn the gas
control knob to "OFF" and call your service technician
or gas supplier.
8. Push in gas control knob and turn
counter-clockwise to "ON."
9. Replacethe lower Horizontal access
panel.
Lighting Instructions:
with Continuous Pilot
For Your Safety - READ BEFORE LIGHTING:
NOTE: Gas control knob cannot be turned from
"PILOT"to"OFF"unlessknobispushed
in slightly. Do not force.
L52DFO-ST

Page 13
L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
f i r e f e a t u r
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Operation - Model L52DF-ST-I
L52DF-ST-I
For Your Safety - READ BEFORE LIGHTING:
To Turn Off Gas To Appliance:
Lighting Instructions:
QIf you cannot reach your gas supplier, call the Fire
Department.
C. Use only your hand to push in or turn the gas control knob.
Never use tools. If the knob will not push in or turn by
hand, don't try to repair it, call a qualified service technician.
Force or attempt to repair may result in a fire or explosion.
D. Do not use this appliance if any part has been under water.
Immediately call a qualified service technician to inspect
the appliance and to replace any part of the control system,
and any gas control which has been under water.
A. This appliance is equipped with an ignition system that
lights the pilot burner automatically. Do not attempt to
light the pilot by hand.
B. BEFORE LIGHTING smell all around the appliance area for
gas. Be sure to smell next to the floor because some gas
is heavier than air and will settle on the floor.
What To Do If You Smell Gas:
QDo not try to light any appliance.
QDo not touch any electrical switch; do not use any phone
in your building.
QImmediately call your gas supplier from a neighbour's
phone. Follow the gas supplier's instructions.
1. Turn off remote switch.
2. Lift out the lower Horizontal access panel.
3. Turn the switch on the gas control to "Off".
4. Replace the lower Horizontal access panel.
1. STOP! Read the safety information above on this label.
2. Lift out the lower Horizontal access panel.
3. Turn switch on the gas control to OFF".
4. Wait 5 minutes to clear out any gas. If you smell gas,
STOP! Follow "B" in the safety information above on this
label. If you don't smell gas, go to the next step.
5. Turn switch on the gas control to "ON". NOTE: This unit is
equipped with an ignition system that lights the pilot burner
automatically. Do not attempt to light the pilot by hand.
6. Turn on wall switch.
7. Replace the lower Horizontal access panel.
8. If the fireplace does not operate, follow the instructions "To
Turn Off Gas To Appliance" and call your service technician
or gas supplier.
with Honeywell Electronic Ignition
Gas
Inlet
Gas Control Switch
Shown in "On" Position
WARNING: If you do not follow these instructions exactly, a re or explosion may result
causing property damage, personal injury or loss of life.
L52DFO-ST

Page 14
L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
f i r e f e a t u r
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B-Series BF-A
L-Series DF-I Operation

Page 15
L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
f i r e f e a t u r
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Maintenance
General
QHave the replace and installation inspected yearly.Theinspection
must include, but is not limited to, the following:
• A visual check of the entire vent system and termination.
• An inspection of  the explosion relief appers and the door
gasketing to ensure a proper seal.
•An inspection of the burner, venturi, and primary air openings.
•  Aninspectionofthegasvalve,gascomponents,andpilotame.
For your convenience a 1/8" manifold pressure tap is supplied
on the gas valve for a test gauge connection. See Figure 32.
• Inspection of all optional equipment, thermostats, etc.
QFor Natural Gas this appliance requires a minimum inlet pressure
of 5.5" W.C. and a manifold pressure of 3.5" W.C.
QFor Propane Gas this appliance requires a minimum inlet pressure
of 11" W.C. and a manifold pressure of 10" W.C.
QAlwayskeepthereplaceareaclearandfreeofcombustiblematerials,
aswellasgasolineandotherammablevaporsandliquids.
QDonotusethisapplianceifanyparthasbeenunderwater.Immediately
callaqualiedservicetechniciantoinspecttheapplianceandto
replace any part of the control system and any gas control which
has been under water.
Operation
Lighting Instructions
See pages 12, 13 and 14.
Burner Adjustment
The L52DF-ST is equipped with an adjustable burner, allowing you to
raiseorlowertheames.Toadjusttheames,locatetheblackknob
marked 'Hi-Lo', in the centre of the gas control valve (See Figure 32).
The front burners are not adjustable.
QToraisetheameheight,turntheblackknob(locatedbehindthe
lower trim) counter-clockwise.
QTolowertheameheight,turnclockwise.
Figure 32. 'Hi-Lo' Adjustment on the L52DF-ST's gas valve.
Cleaning
Whenthereplaceisrstactivated,theremaybesomesmokingand
avisiblelmmaybeleftontheglass.Thisisanormalcondition,andis
the result of burning of protective coatings on new metal.
QGlassmustbecleanedperiodicallytoremoveanylm(whichisa
normal by-product of combustion) which may be visible. Film can
easily be removed by removing the door, as shown on page 12.
Handle the door carefully, and clean it with non-abrasive glass
cleaners.OneofthemosteffectiveproductsisKelKem.
QSiliconesealsoninnerdoorduringinitialringwill"offgas",leaving
a visual deposit of a white substance on combustion chamber walls.
This can easily be removed using normal household products.
QUse a vacuum cleaner or whisk broom to keep the control
compartment,burner,andreboxfreefromdustandlint.
QLinearBurners maybecleanedperiodicallywithavacuumtoremove
soot or other contaminates.
Note: L52DF-ST-I models (electronic ignition) do not feature
hi/lo adjustment.
'Hi-Lo' Adjustment Knob
CAUTION!
 Fireplacegascontrolmustbeinthe“OFF”positionandpilot
and main burners extinguished when cleaning appliance with
a vacuum.
Doors can get very hot. Handle only when cool.
WARNING!
Do not attempt to clean glass when hot.
Do not clean glass with abrasive materials as any glass etch-
ing may cause premature glass failure.

Page 16
L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
f i r e f e a t u r
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Maintenance
Gas Control Valve Troubleshooting L-52-DF-I
Manifold Pressure
Test Connection
Pilot Adjustment Screw
Inlet
Pressure
Power
Generator
Wall Switch
Figure 33. Sit Nova 820 gas valve.
Pilot Burner Adjustment
1. Locate Pilot Adjustment Screw. (See gure 33.)
2. Adjustpilotscrewtoprovideproperlysizedameasshownin
gure 34).
3. After installing or servicing, leak test with a soap solution with
main burner on. Coat pipe and tubing joints, gasket etc. with soap
solution. Bubbles indicate leaks. Tighten any areas where the
bubbles appear until the bubbling stops completely.
Figure 34. Pilot Burner.
Troubleshooting
The following is a troubleshooting chart of possible problems:
PROBLEM CORRECTIVE ACTION
Noisy Pilot Flame Locate pilot adjustement screw on
gascontrolvalve. Flameisdecreasedby
turning adjustment screw clockwise.
Pilot won’t ignite Disconnect remote wires and try to
light pilot. If pilot now works, remote
connections are faulty. Check wiring
diagram gure 33.
Main burner will 1. Check wiring (see gure 33).
not light 2. Check wall switch for proper con-
nection.
L52DF-ST
Ifyourreplacestilldoesnotoperatecorrectly,consultyourdealeror
the manufacturer.
All service and repairs should be performed by a qualied
agency.
Allspareparts,optionaltrimnishesareavailablefromyourlocal
dealer or the manufacturer.

Page 17
L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
f i r e f e a t u r
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Maintenance
S
pare
P
ar
t
s -
L52DF(O)
-
ST
NG Gas Valve
RGC1006
LP Gas Valve
RGC1005
NG Pilot
RPA020
LP Pilot
RPA021
Burner NG
RBLS201
Burner LPG
RBLS202
2@51dms/center,
2@52dms/side
Door
RDTL52
Base
RLGS54
L52DF-ST
4@62dms
Oriface LPG
Oriface NG
L52DF-I
RGC1004
RGC1003
RPA003
RPA004
ROR
ROR
RDTL42
L52DF-A
RGC3033
RGC3034
RPA052
RPA053
ROR
ROR
RDTL42

Page 18
L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
f i r e f e a t u r
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The Warranty
The Companies warrants the Montigo Gas Appliance to be free from defects in materials and workmanship at the time of manufacture. On the Montigo, there is a
ten-year warranty on the firebox and its components, a five-year warranty on the main burner and pilot burner, and a one-year warranty on the gas control valve
and fibre logs. Glass, plated/painted finishes, and refractory lining are exempt.
Remedy And Exclusions
The coverage of this Warranty is limited to all components of the Gas Appliance manufactured by The Companies.
This Warranty only covers Montigo Gas Appliances installed in the United States or Canada.
If the components of the Gas Appliance covered by this Warranty are found to be defective within the time frame stated (see The Companies right of investigation
outlined below). The Companies will, at its option, replace or repair defective components of the Gas Appliance manufactured by The Companies at no charge,
and will also pay for reasonable labour costs incurred in replacing or repairing components. If repair or replacement is not commercially practical, The Companies
will, at its option, refund the purchase price of the Montigo Gas Appliance.
This Warranty covers only parts and labour as provided above. In no case shall The Companies be responsible for materials, components, or construction which
are not manufactured or supplied by The Companies, or for the labour necessary to install, repair or remove such materials, components or construction. All
replacement or repair components will be shipped F.O.B. the nearest The Companies factory.
Qualifications To The Warranty
The Gas Appliance Warranty outlined above is further subject to the following qualifications:
(1) The Gas Appliance must be installed in accordance with The Companies installation instructions and local building codes. The Warranty on this Montigo
Gas Appliance covers only the component parts manufactured by The Companies. The use of components manufactured by others with this Montigo Gas
Appliance could create serious safety hazards, may result in the denial of certification by recognized national safety agencies, and could be in violation of local
building codes. This warranty does not cover any damages occurring from the use of any components not manufactured or supplied by The Companies
(2) The Montigo Gas Appliance must be subjected to normal use. The Gas Appliances are designed to burn gas only. Burning conventional fireplace fuels such
as wood, coal or any other solid fuel will cause damage to the Gas Appliance, will produce excessive temperatures and will result in a fire hazard.
Limitations On Liability
It is expressly agreed and understood that The Companies sole obligation, and purchaser's exclusive remedy under this Warranty, under any other warranty,
expressed or implied, or in contract, tort or otherwise, shall be limited to replacement, repair, or refund, as specified above.
In no event shall The Companies be responsible for any incidental or consequential damages caused by defects in its products, whether such damage occurs
or is discovered before or after replacement or repair, and whether or not such damage is caused by The Companies negligence. Some states do not allow the
exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. The duration of any implied warranty
with respect to this Montigo Gas Appliance is limited to the duration of the foregoing warranty. Some states do not allow limitation on how long an implied warranty
lasts, so the above may not apply to you.
Investigation Of Claims Against Warranty
The Companies reserves the right to investigate any and all claims against this Warranty and to decide upon method of settlement.
The Companies Are Not Responsible For Work Done Without Written Consent
The Companies shall in no event be responsible for any warranty work done without first obtaining The Companies written consent.
Dealers Have No Authority To Alter This Warranty
The Companies employees and dealers have no authority to make any warranties nor to authorize any remedies in addition to or inconsistent with those stated
above.
How To Register A Claim Against Warranty
In order for any claim under this Warranty to be valid, The Companies must be notified of the claimed defect in writing or by telephone, as soon as reasonably
possible after the defect is discovered. Claims against this Warranty in writing should include the date of installation, and a description of the defect.
Other Rights
This Warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
NOTE: The Companies as stated above refer to - Canadian Heating Products Inc. and/or Montigo Del Ray Corp.
Canadian Heating Products Inc. and/or Montigo DelRay Corp. reserves the right to make changes at any time, without
notice, in design, materials, specifications, prices and also to discontinue colors, styles and products.
Warranty

Page 19
L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
f i r e f e a t u r
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Appendix A - Termination Locations
A= clearance to the termination frame above grade, veranda, porch, deck,
or balcony [16 inches (41 cm) minimum]
B= clearance to door, or sides and top of window, that may be opened [16
inches (41 cm) minimum for appliances ≤100 000 BTU/H (30kW)]
C= clearance to bottom of window that may be opened horizontally [36 inches
(92 cm) minimum for appliances ≤100 000 BTU/H (30kW)]
D= no clearance to permanently closed window when installed with approved
glass penetration termination
E= clearance to permanently closed window [16 inches 41 cm recommended
to prevent condensation on window]
F = vertical clearance to ventilated soft located above the termination within a
horizontal distance of 2 feet (61 cm) from the centreline of the termination
[22 inches (56 cm) minimum]
G= clearance to unventilated soffit [16 inches
(41 cm) minimum to non-combustibles]
[22 inches (56 cm) minimum to combustibles]
H= clearance to outside corner [9 inches (23 cm) minimum]
I= clearance to inside corner [12 inches (31 cm) minimum]
J= * not to be installed above a meter/regulator assembly within
40" (103 cm) horizontally from the centreline of the regulator
K= clearance to service regulator vent outlet [3 feet minimum in the United
States] [*6 feet (1.8 m) minimum in Canada]
L = clearance to non-mechanical air supply inlet to building or the combustion
air inlet to any other appliance [16 inches (41 cm) minimum for appliances
≤100 000 BTU/H (30kW)]
M= clearance to mechanical air supply inlet [*6 feet (1.8 m) minimum]
N= †clearance above paved sidewalk or a paved driveway located on public
property [*7 feet (2.1 m) minimum]
P= clearance under veranda, porch, deck, or balcony
[16 inches (41 cm) minimum‡to non-combustibles]
[22 inches (56 cm) minimum‡to combustibles]
Q= clearance above a roof [24 inches (61 cm) minimum]
R= clearance to adjacent walls and neighboring buildings
[18 inches (46 cm) minimum]
S= c l e a r a n c e f r o m c o r n e r i n r e c e s s e d l o c a t i o n
[12 inches (31 cm) minimum]
T = maximum depth in recessed location
[48 inches (122 cm) minimum]
U= minimum width for back wall of recessed location
[24 inches (61 cm) minimum]
V= no horizontal clearance between the frames of two terminations that
are level.
W= horizontal clearance between the frames of two terminations that are
not level. [36 inches (92 cm) minimum]
†a vent shall not terminate directly above a sidewalk or paved driveway
which is located between two single family dwellings and serves both
dwellings
‡only permitted if veranda, porch, deck, or balcony has an open side that
is equal to or greater than the depth of the enclosed area
* as specied in CGA B149 Installation Codes. Note: local Codes or
Regulations may require different clearance.

Page 20
L52DF(O)-ST See-thru Gas Fireplace
Part No. XG0711
f i r e f e a t u r
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Amendment
(Gas Fireplace / Equipment sold in the State of Massachusetts)
5.08: Modications to NFPA-54, Chapter 10
(1) Revise NFPA-54 section 10.5.4.2 by adding a second exception as follows:
Existing chimneys shall be permitted to have their use continued when a gas conversion burner is installed, and shall be equipped with a manually reset device
that will automatically shut off the gas to the burner in the event of a sustained back-draft.
(2) Revise 10.8.3 by adding the following additional requirements:
(a) For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for residential purposes,
includingthoseownedoroperatedbytheCommonwealthandwherethesidewallexhaustventterminationislessthanseven(7)feetabovenishedgradein
theareaoftheventing,includingbutnotlimitedtodecksandporches,thefollowingrequirementsshallbesatised:
1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time of installation of the side wall horizontal vented gas fueled equip-
ment,theinstallingplumberorgasttershallobservethatahardwiredcarbonmonoxidedetectorwithanalarmandbatteryback-upisinstalledontheoor
levelwherethegasequipmentistobeinstalled.Inaddition,theinstallingplumberorgasttershallobservethatabatteryoperatedorhardwiredcarbon
monoxide detector with an alarm is installed on each additional level of the dwelling, building or structure served by the side wall horizontal vented gas fueled
equipment.Itshallbetheresponsibilityofthepropertyownertosecuretheservicesofqualiedlicensedprofessionalsfortheinstallationofhardwiredcarbon
monoxide detectors
a. In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the hard wired carbon monoxide detector with
alarmandbatteryback-upmaybeinstalledonthenextadjacentoorlevel.
b. In the event that the requirements of this subdivision can not be met at the time of completion of installation, the owner shall have a period of thirty (30) days
tocomplywiththeaboverequirements;provided,however,thatduringsaidthirty(30)dayperiod,abatteryoperatedcarbonmonoxidedetectorwithanalarm
shall be installed.
2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in accordance with the above provisions
shallcomplywithNFPA720andbeANSI/UL2034listedandIAScertied.
3. SIGNAGE. Ametalorplasticidenticationplateshallbepermanentlymountedtotheexteriorofthebuildingataminimumheightofeight(8)feet
above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment. The sign shall read, in print
sizenolessthanone-half(1/2)inchinsize,“GASVENTDIRECTLYBELOW.KEEPCLEAROFALLOBSTRUCTIONS”.
4. INSPECTION. The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless,
upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR 5.08(2)(a)1 through 4.
(b)EXEMPTIONS:Thefollowingequipmentisexemptfrom248CMR5.08(2)(a)1through4:
 1.TheequipmentlistedinChapter10entitled“EquipmentNotRequiredToBeVented”inthemostcurrenteditionofNFPA54asadoptedbythe
Board;and
2. Product Approved side wall horizontally vented gas fueled equipment installed in a room or structure separate from the dwelling, building or struc-
ture used in whole or in part for residential purposes.
(c) MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM PROVIDED. When the manufacturer of Product
Approved side wall horizontally vented gas equipment provides a venting system design or venting system components with the equipment, the instructions
provided by the manufacturer for installation of the equipment and the venting system shall include:
 1.Detailedinstructionsfortheinstallationoftheventingsystemdesignortheventingsystemcomponents;and
2. A complete parts list for the venting system design or venting system.
(d) MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM NOT PROVIDED. When the manufacturer of a Prod-
uctApprovedsidewallhorizontallyventedgasfueledequipmentdoesnotprovidethepartsforventingtheuegases,butidenties“specialventingsystems”,
thefollowingrequirementsshallbesatisedbythemanufacturer:
 1.Thereferenced“specialventingsystem”instructionsshallbeincludedwiththeapplianceorequipmentinstallationinstructions;and
2. The “special venting systems” shall be Product Approved by the Board, and the instructions for that system shall include a parts list and
detailed installation instructions.
(e) A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equipment, all venting instructions, all parts lists for
venting instructions, and/or all venting design instructions shall remain with the appliance or equipment at the completion of the installation.
(3) After NFPA-54 section 10.10.4.2 add a new section 10.10.4.3 as follows:
When more than four gas appliances are to be vented through a common gas vent or common horizontal vent manifold, a plan of the proposed vent installation
shall be submitted to the Inspector and the serving gas supplier for review and approval.
Extraction from: Massachusets Rules and Regulations
5.00: Amendments To 2002 Edition Of ANSI Z223.1-NFPA-54
Appendix B - State of Massachusetts