Lennox MLDVT-30NM User manual

CARE AND OPERATION
INSTRUCTIONS
A French manual is available upon request. Order P/N 506223-04
Ce manuel d’installation est disponible en francais, simplement en
faire la demande. Numéro de la pièce 506223-04
MODELS
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
DIRECT VENT
MLDVT-30/35/40/45 SERIES
OTL Report No. 116-F-57-5
US
Portland
Millivolt Models Electronic Models
INSTALLATEUR: Laissez cette notice avec l'appareil.
CONSOMMATEUR: Conservez cette notice pour con-
sultation ultérieure.
MLDVT-30NE
MLDVT-35NE
MLDVT-40NE
MLDVT-45NE
MLDVT-30NM
MLDVT-30PM
MLDVT-35NM
MLDVT-35PM
MLDVT-40NM
MLDVT-40PM
MLDVT-45NM
MLDVT-45PM
VENTED GAS FIREPLACE HEATERS - DIRECT VENT MODELS
P/N 506017-01 REV. A 06/2009
WARNING:IFTHEINFORMATIONINTHISMANUAL
IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLO-
SIONMAYRESULTCAUSINGPROPERTYDAMAGE,
PERSONAL INJURY OR LOSS OF LIFE.
WARNINGS
• Hot! Do not touch! The glass and
surfaces of this appliance will be hot
during operation and will retain heat
forawhileaftershuttingofftheappli-
ance. Severe burns may result.
• Carefully supervise children in the
same room as appliance.
• If small children are present in the home, it is
recommended that this appliance be fitted with
a screen door or screen panel kit. See Pages
15 and 16 for ordering information.
Do not store or use gasoline or other flammable
vapors or liquids in the vicinity of this or any
other appliance.
WHAT TO DO IF YOU SMELL GAS:
• Do not 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 your gas supplier's
instructions.
• If your gas supplier cannot be reached, call
the fire department.
Installation and service must be performed by
a qualified installer, service agency or the gas
supplier.
AVERTISSEMENT: ASSUREZ-VOUS DE BIEN
SUIVRE LES INSTRUCTIONS DONNÉES DANS
CETTE NOTICE POUR RÉDUIRE AU MINIMUM LE
RISQUE D'INCENDIE D'EXPLOSION OU POUR
ÉVITER TOUT DOMMAGE MATÉRIEL, TOUTE
BLESSURE OU LA MORT.
Ne pas entreposer ni utiliser d'essence ni d'autre
vapeursouliquidesinflammablesdanslevoisinage
de cet appareil ou de tout autre appareil.
QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE
GAZ:
• Ne pas tenter d'allumer d'appareil.
• Ne touchez à aucun interrupteur. Ne pas vous
servir des téléphones se trouvant dans le báti-
ment où vous vous trouvez.
• Appelez immédiatement votre fournisseur de
gaz depuis un voisin. Suivez les instructions
du fournisseur.
• Si vous ne pouvez rejoindre le fournisseur de
gaz, appelez le service des incendies.
L'installation et l'entretien doivent être assurés
par un installeur ou un service d'entretien qualifié
ou par le fournisseur de gaz.

2
The Millivolt appliances have a millivolt gas
controlvalvewithpiezoignitionsystemprovides
safe, efficient operation. If any optional acces-
sories which require electrical power are being
installed, the electrical power must be provided
at the time of appliance installation.
TheElectronicapplianceshaveabatterybacked
up electronic intermittent pilot system that
provides safe, efficient operation. No external
electrical power is required to operate these
appliances.
These appliances comply with National Safety
Standards and are tested and listed by Omni-
Test Laboratories (Report No. 116-F-57-5)
to ANSI ZZ21.88 (in Canada, CSA-2.33), and
CAN/CGA-2.17-M91 in both USA and Canada,
as vented gas fireplace heaters.
The Installation must conform to local codes
or, in the absence of local codes, with the
National Fuel Gas Code, ANSI Z223.1/NFPA
54-latest edition, or the Natural Gas and Pro-
paneInstallation Code,CAN/CSA B149.1-latest
edition. Theappliance,wheninstalled,mustbe
electrically grounded in accordance with local
codes or, in the absence of local codes, the
latest edition of the National Electrical Code,
ANSI/NFPA70, ortheCanadianElectricalCode,
CSA C22.1 - latest editions.
DO NOT ATTEMPT TO ALTER OR MODIFY
THE CONSTRUCTION OF THE APPLIANCE OR
ITS COMPONENTS. ANY MODIFICATION OR
ALTERATIONMAY VOIDTHEWARRANTY,CER-
TIFICATION AND LISTINGS OF THIS UNIT.
TABLE OF CONTENTS
Introduction ......................................Page 2
General Information..........................Page 2
Gas Controls Access.........................Page 4
Operation/Care of Your Appliance .....Page 4
Variable Flame Adjustment................Page 5
Maintenance......................................Page 6
Front Glass Enclosure Panel,
Removal and Installation.................Page 7
Install Volcanic Stone,
Embers and Logs...........................Page 8
Burner Flame Appearance/Sooting....Page 12
Burner Flame Adjustments................Page 13
Millivolt Appliance Checkout.............Page 13
Electronic Appliance Checkout..........Page 13
Warranty ...........................................Page 13
Product Reference Information.........Page 14
Wiring Diagrams...............................Page 14
Accessory Components ....................Page 15
Lighting Instructions – Millivolt ........Page 18
Lighting Instructions – Electronic .....Page 20
Maintenance Schedule......................Page 22
Troubleshooting Guide – Millivolt......Page 23
Troubleshooting Guide – Electronic ..Page 24
Replacement Parts List.....................Page 25
CONGRATULATIONS!
In selecting this LENNOX Direct-Vent Gas Appliance you have chosen the finest and most
dependable fireplace to be found anywhere. Its a beautiful, prestigious alternative to a
wood burning fireplace. Welcome to a Family of tens of thousands of satisfied LENNOX
Fireplace Owners.
Please carefully read and follow all of the instructions found in this manual. Please
pay special attention to the safety instructions provided in this manual. The Care and
Operation Instructions included here will assure that you have many years of dependable
and enjoyable service from your LENNOX product.
INTRODUCTION
The Fireplace models covered in this manual
areDirect-Ventsealedcombustiongasfireplace
heaters designed for residential application.
Direct-Vent appliances operate with the com-
bustion chamber completely isolated from the
indoor environment.
All air for combustion is brought in from the
outside and exhaust gases are vented through
the same direct vent, co-axial (intake/exhaust)
vent system.
GENERAL INFORMATION
Note: Installation and repair should be per-
formed by a qualified service person. The
appliance should be inspected annually by
a qualified professional service technician.
More frequent inspections and cleanings
may be required due to excessive lint from
carpeting, bedding material, etc.
It is imperative that the control compartment,
burners and circulating air passage ways of
appliance be kept clean. See Maintenance
instructions on Page 6.
S'assurer que le brùleur et le compartiment des
commandes sont propres. Voir les instructions
d'installation et d'utilisation qui accompagnent
l'appareil.
Provide adequate clearances around air open-
ings and adequate accessibility clearance for
service and proper operation. Never obstruct
the front openings of the appliance.
Duetohightemperaturestheapplianceshould
belocatedoutoftrafficandawayfromfurniture
and draperies. Locate furniture and window
coverings accordingly.
The vent termination is hot while in operation
andforaperiodoftimefollowingtheuseofthe
fireplace. Topreventcontactwithhotsurfaces,
werecommendtheuseofaterminationguard.
See Page 15 for ordering information.
These fireplaces are designed as supplemen-
tal heaters. Therefore, it is advisable to have
an alternate heat source when installed in a
dwelling.
This manual is part of a set of two supporting
this product. Refer to manual 506015-02 for
Installation Instructions.
These appliances are designed to operate on
natural gas or propane gas only. The use of
otherfuelsorcombinationoffuelswilldegrade
the performance of this system and may be
dangerous.
Millivolt Models - BTU Input
Millivolt models come standard with the manu-
ally-modulatedgasvalve;flameappearanceand
heat output can be controlled at the gas valve.
The BTU Input for millivolt models is shown in
Tables 1 and 2.
WARNING: Improper installation,
adjustment, alteration, service
or maintenance can cause injury
or property damage. Refer to
this manual. For assistance or
additional information consult a
qualifiedinstaller,service agency
or the gas supplier.
WARNING: These fireplaces are
vented heaters. Do not burn
wood or other materials in these
appliances.

3
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Gas Pressure -
Tables 3 and 4 show the appliances' gas
pressure requirements. Orifice Sizes - Sea Level to High Altitude
(All Models): These appliances are tested and
approvedforinstallationsatelevationsof0-4500
feet (0-1372 meters) above sea level using the
standard burner orifice sizes (marked with an
"*" in Table 5 ).
Atthe timeofinstallation,itmustbedetermined
if the appliance needs to be derated. Contact
yourlocalgassupplierforderationrequirements
for your area.
These appliances must be isolated from the
gas supply piping system (by closing their
individual manual shut-off valve) during any
pressure testing of the gas supply piping
systemattest pressuresequalto orless than
1/2 psig (3.5 kPa).
These appliances and their individual shut-off
valves must be disconnected from the gas
supply piping system during any pressure
testing of that system at pressures greater
than 1/2 psig (3.5 kPa).
Inlet Gas Supply Pressure
(all models)
Fuel # Minimum Maximum
Natural Gas 4.5" WC
(1.12 kPa)
10.5" WC
(2.61 kPa)
Propane 11.0" WC
(2.74 kPa)
13.0" WC
(3.23 kPa)
Table 3
Manifold Gas Supply Pressure
(all models)
Fuel # Low High
Natural
Gas
(Lo) 2.2" WC
(0.55 kPa)
(Hi) 3.5" WC
(0.87 kPa)
Propane (Lo) 6.3" WC
(1.57 kPa)
(Hi) 10.0" WC
(2.49 kPa)
Table 4
Ne pas se servir de cet appareil s'il a été
plongé dans l'eau, complètement ou en partie.
Appeler un technicien qualifié pour inspecter
l'appareil et remplacer toute partie du système
de contrôle et toute commande qui ont été
plongés dans l'leau.
Test gauge connections are provided on the
front of the millivolt gas control valve, identi-
fied IN for the inlet and OUT for the manifold
side (see Figure 3 on Page 5). A 1/8" NPT Test
gauge connection is provided at the inlet and
outlet (manifold) ports on the electronic gas
control valve (see Figure 4 on Page 5).
These appliances must not be connected to a
chimney or flue serving a separate solid fuel
burning appliance.
WARNING: Failure to comply with
the installation and operating
instructions provided in this docu-
ment will result in an improperly
installedandoperatingappliance,
voidingitswarranty. Anychangeto
thisapplianceand/oritsoperating
controls is dangerous. Improper
installation or use of this appli-
ance can cause serious injury or
death from fire, burns, explosion
or carbon monoxide poisoning.
Carbon Monoxide Poisoning: Early signs
of carbon monoxide poisoning are similar
to the flu with headaches, dizziness and/or
nausea. If you have these signs, obtain fresh
air immediately. Turn off the gas supply to
the appliance and have it serviced by a quali-
fied professional, as it may not be operating
correctly.
WARNING: Do not place clothing
or other flammable materials on
or near this appliance.
WARNING: Children and adults
should be alerted to the hazards
of high surface temperatures.
Use caution around the appli-
ance to avoid burns or clothing
ignition. Young children should
be carefully supervised when
they are in the same room as the
appliance.
AVERTISSEMENT: Surveiller les
enfants. Garder les vêtements,
les meubles, l'essence ou autres
liquides à vapeur inflammables à
cote de l'appareil.
Do not use these appliances if any part has
been under water. Immediately call a qualified,
professional service technician to inspect the
appliance and to replace any parts of the con-
trol system and any gas control which have
been under water.
Burner Orifice Sizes
Elevation 0-4500 feet ( 0-1372 meters)
Model
Series Nat.Gas drill size (inches) Propane drill size (inches)
MLDVT-30 #50 (0.070")*
H4873•
#59 (0.041")*
H7838
MLDVT-35 #49 (0.073")*
21L82•
0.045"*
75L10•
MLDVT-40 #43 (0.089")*
99K75•
#55 (0.052")*
19L52•
MLDVT-45 0.090"*
37L70•
#54 (0.055")*
99K79•
Table 5
Input (BTU) Manually-Modulated
Gas Valves (all models)
NATURAL GAS
Models Input Rate (BTU / HR)
MLDVT-30N
13,500 high
10,500 low
MLDVT-35N
16,000 high
12,500 low
MLDVT-40N 22,000 high
17,000 low
MLDVT-45N 23,000 high
17,500 low
Table 1
Input (BTU) Manually-Modulated
Gas Valves (all models)
PROPANE GAS
Models Input Rate (BTU / HR)
MLDVT-30P 12,500 high
9,000 low
MLDVT-35P
15,000 high
11,500 low
MLDVT-40P 20,000 high
15,800 low
MLDVT-45P 22,000 high
17,000 low
Table 2
* Standard size installed at factory
• Part /Cat. Number

4NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Deration - At higher elevations, the amount
of BTU fuel value delivered must be reduced
by either using gas that has been derated by
the gas company or by changing the burner
orificetoasmallersizeasregulatedbythelocal
authoritieshaving jurisdictionandbythe(USA)
National Fuel Gas Code NFPA 54/ANSI Z223.1
- latest edition or, in Canada, the CAN/CSA-
B149.1 - latest edition.
Burn-in Period
During the first few fires of this appliance there
will be some odor due to the curing of the
paint and burning off of lubricants used in the
manufacturing process.
Depending on your use, the burn-in period may
take a few hours or a few days.
KEEP YOUR HOUSE WELL VENTILATED
DURING THE CURING PROCESS. THE ODOR
AND HAZE EMITTED DURING THE CURING
PROCESS CAN BE QUITE NOTICEABLE AND
MAY SET OFF A SMOKE DETECTOR.
If an optional blower is installed, Do Not turn
it on during the Burn-In period.
A white film may develop on the glass front
during the first few fires as part of the curing
process. The glass should be kept clean during
thefirsttwoweeksofusetopreventthefilmfrom
baking on (making it very difficult to remove).
See Cleaning Glass on Page 6.
Gas Controls/Control Compartment
Access
Thegascontrolscanbefoundbehindthecontrol
compartment access door.
Removing Control Compartment Door:
Open the panel by gently lifting it upward and
forwards. Slide the door, first to one side and
then the other, so the tabs clear both of the
locating holes.
On millivolt systems, the piezo igniter, HI/LO
flame adjustment knob, and pilot and main
gas OFF/ON control knob are located below
the glass panel enclosure. The gas valve for
electronic systems is also located below the
glass enclosure panel. See Figure 2.
Reinstalling Control Compartment Door:
To reinstall, insert the tabs on each side of the
doorintothecorrespondingholesinthecontrol
compartment opening, one side first then the
other. To close, pull the door gently up and
close by pushing forward and pushing the top
edge down into the groves at the brackets until
it locks in place.
OPERATION AND CARE OF YOUR
APPLIANCE
CAUTION: THE VENT TERMINATION IS HOT
WHILE IN OPERATION AND FOR A PERIOD
OF TIME FOLLOWING THE USE OF THE FIRE-
PLACE. TO PREVENT CONTACT WITH HOT
SURFACES, WE RECOMMEND THE USE OF
A TERMINATION GUARD. SEE PAGE 17 FOR
ORDERING INFORMATION.
The standard controls for appliance operation
are located behind the panel below the appli-
ance front glass enclosure panel (Figure 2 ).
Optional control switches are also available
(see Pages 15 and 17 - Remote Wall Switch,
Remote Control or Wall Thermostat).
Figure 1
Control Compartment Door Tab
Operation of millivolt and electronic gas con-
trol systems are different. Before lighting and
operatingyourappliancedetermineif youhave
a millivolt or electronic appliance. Familiarize
yourself with the gas control valve that your
appliance uses. Refer to Figure 1 for access
to the gas control valve.
Millivolt Appliances - Appliances with
Millivolt systems will be fitted with the gas
control valve shown in Figure 3.
Electronic Appliances - Appliances with
electronic systems will be fitted with the
electronic valve shown in Figure 4.
Millivolt Appliances - To light millivolt appli-
ancesrefertoFigure2. Detailedlightinginstruc-
tions are found on Pages 18 and 19 . Millivolt
appliance lighting instructions may also be
foundonthepulloutlightinginstructionlabels
attached to the gas control valve.
Once the pilot is lit, the main burner may be
turned ON and OFF using wall switch, remote
control, optional on unit rocker switch (FRS),
or wall thermostat. To operate: Toggle the
switch between its ON and OFF positions.
If your millivolt appliance is equipped with an
optional remote switch kit (wall switch, remote
control, rocker switch, or wall thermostat) and
thepilotislit,theappliancemainburnermay be
turned on and off using the optional switch.
WARNING: YOUNG CHILDREN SHOULD BE CAREFULLY SUPERVISED WHEN THEY
ARE IN THE SAME ROOM AS THE APPLIANCE. 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
GATETOKEEPTODDLERS,YOUNGCHILDRENANDOTHERATRISKINDIVIDUALSOUT
OF THE ROOM AND AWAY FROM HOT SURFACES.

5
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Figure 4
SIT Millivolt Gas Valve
Figure 3
Dexen Electronic Gas Valve
PILOT
OUT
VENT
LO
TH
TP
TH
TP
HI
IN
IN
Pilot Stage
Terminal
Pressure-Tap
(Inlet)
Pilot Gas
Outlet
Supply
Gas Inlet
Pressure-Tap
(Manifold) Burner Stage
Terminal
Ground
(TP)
Gas Outlet
To Burner
Regulator
Mounting Screw
Variable Flame
Height Adjustment
Manifold Pressure
Port
Inlet
Pressure
Port
Main Gas Control Knob
H
I
L
O
W
TPTH TP TH
P
I
L
O
T
P
I
L
O
T
O
N
it
O
F
F
IN OUT
Gas Inlet
Terminals TPTH, TP and TH
Gas
Outlet
Figure 2
Note: To prevent excessive resistance in burner
circuit (which can cause burner operation
problems), only one burner control switch
should be wired to valve.
Electronic Appliances -
Tolightelectronicappliancesrefertothedetailed
lighting instructions found on Pages 20 and
21 of these instructions. Electronic appliance
lighting instructions may also be found on the
pull out lighting instruction labels attached to
the gas control valve.
If your electronic appliance is equipped with an
optionalremotewallswitchorremotecontrolkit
theappliancemainburnermaybeturnedonand
off with the wall switch or remote control.
If your electronic appliance is not equipped
with a wall switch or remote control, the main
burner must be turned off and on with a gas
control switch located in some other location
by the installer. Contact the installer for direc-
tions. Check batteries, if installed, routinely
(ever three months).
Gas Flex Line
3 Inch
Pipe Nipple Valve Piezo Spring Door
Latch
Lower Control
Compartment
Note: It is recommended that batteries not
be installed in the battery holder until a power
outage, or if the appliance is to be operated
solely with two (2) "D" batteries.
Refer to the Lighting Instructions on page 20
to light the appliance in the event of a power
failure.
Variable Flame Height Adjustment
1. All millivolt appliances are equipped with a
variable gas control valve. Flame height for
these models may be adjusted through a
range between fixed low and high settings
while the appliance is in operation. Adjust
the flame height as desired after lighting the
appliancebyrotatingthevariableadjustment
control knob (HI/LO) located on the front of
the valve (refer to Figures 3 and 4).
TO LIGHT YOUR APPLIANCE IN A POWER
OUTAGE DO THE FOLLOWING:
• Install batteries in battery pack.
• Turn unit mounted switch or wall switch to
the ON Position.
• Unit should spark at pilot and light.
• Operate Normally.
• Replace batteries if needed.
• After power is restored, remove batteries.

6NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
MAINTENANCE
(See Maintenance Schedule, Page 22)
Refertothemaintenancescheduleformaintenance
tasks, procedures, periodicity and by whom they
shouldbeperformed. Alwaysverifyproperopera-
tion of the appliance after servicing.
It is recommended that the glass be cleaned
two or three times during each heating season,
depending on the circumstances present. The
following cleaning solutions are approved for
use to clean glass:
• Non-ammonia based household cleaner
• 50%-50% mix of white vinegar and
water
• Gas fireplace/stove glass cleaner
Inspect Glass Gasket - Visually inspect the
gasket on the backside of the glass enclosure
panels. The gasket surface must be clean, free
of irregularities and seated firmly.
Clean Logs And Burner
Carefully remove the logs (use care when han-
dlingthe fiberlogs,astheybecomequitefragile
after curing). Vacuum out any foreign matter
(lint, carbon, etc). on the burner. Ensure the
burner ports are “open.” Remove any carbon
deposits from the under side of the logs using
a vacuum cleaner, or a soft bristled brush (i.e.
paint brush).
Note: Improper positioning of logs can create
carbon build-up and will alter the performance
of the appliance.
Replacing Logs -
If the logs become damaged by accident or
improper handling and need replacement,
use only the proper replacement logs from
manufacturer (see Pages 25 and 26 for order-
ing information).
Re-Install Embers and Logs - Carefully follow
placement instructions on Pages 8 thru 11.
All logs should fit onto corresponding pins
and/or log stoppers. This will ensure a proper
flame and safe combustion.
Inspect Wiring
Refer to wiring diagrams on Page 14.
CAUTION: Labelallwiresprior to discon-
nection when servicing controls. Wiring
errorscancauseimproperanddangerous
operation. Verify proper operation after
servicing.
ATTENTION: Au moment de l'entretien
des commandes, étiquetez tous les fils
avant de les débrancher. Des erreurs
de cáblage peuvent entraîner un fonc-
tionnement inadéquat et dangereux.
WARNING: Turn off gas and elec-
trical power to the fireplace and
allow it to cool before cleaning or
servicing the appliance.
CAUTION: Wear gloves and safety
glasses for protection while doing
required maintenance.
Verify proper operation after servicing.
S'assurer que l'appareil fonctionne adé-
quatement une fois l'entretien terminé.
Before re-lighting the fireplace, refer to the
lighting instructions in this manual. Instruc-
tions are also found on pull-out panels
located below the glass door in the control
compartment.
Inspect Venting System
The appliance and venting system should be
thoroughly inspected before initial use and
at least annually by a qualified service techni-
cian (inspection should include ensuring that
exhaust or intake passages are unobstructed
and vent components are properly assembled
and not damaged).
If the venting system is disassembled for any
reason, a qualified service technician should
follow vent installation instructions for proper
reassembly and proper sealing of the venting
system components. However, more frequent
periodic inspections and cleanings should be
performed by the homeowner.
Cleaning Glass
(see Front Glass Enclosure Panel, Removal and
Installation on Page 7 )
Note: Cleanglassafter first twoweeks of opera-
tion (after Burn-In period is over) and then only
when necessary and when the fireplace is cool.
Wipe surface with clean, dampened, soft cloth.
Follow with dry, soft towel as desired. Take care
not to scratch the glass surface.
The viewing glass should be cleaned periodi-
cally to remove any build-up caused from the
following:
IMPORTANT: Do not use abrasive clean-
ers on glass. Never clean the glass when
it is hot.
• During start-up, it is normal for condensa-
tion to form on the inside of the glass (this
condensation and fog will usually disappear in
a few minutes). The moisture can cause lint,
dust and other airborne particles to cling to the
glass surface.
• Initial curing of the high temperature paint
and burning off of lubricants used in the
manufacturing process may result in a film
on the glass.
• A whitecoating may form on the glassasa result
of impurities and minerals in the fuel.
2. During the first initial burns of these appli-
ances,therewillbesomeodoremitted(refer
to Burn-In Period on Page 4).
3. Keepthe lowercontrolcompartmentclean
by vacuuming or brushing at least twice
a year. More frequent cleaning may be
requiredduetoexcessivelintfromcarpet-
ing, bedding materials, pet hair, etc. It is
veryimportantthat controlcompartments,
burners, circulating air passageways
and air venturi on the appliance are NOT
obstructed in any way.
4. Always turn off gas to the pilot (millivolt
appliances) and let the appliance cool down
before cleaning. Before re-lighting, refer
to the lighting instructions in this manual.
Lighting instructions may also be found
on the pull out lighting instruction labels
attached to the gas control valve.
5. Always keep the appliance area clear and
free from combustible materials, gasoline
and other flammable liquids.
6. Remember, Millivolt appliances have a con-
tinuous burning pilot flame. Exercise cau-
tion when using products with combustible
vapors.

7
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Front Glass Enclosure Panel, Removal
and Installation
Figure 5 - INSTALLING GLASS DOOR
WARNING: Do not operate appli-
ancewiththeglassfront removed,
cracked or broken. Replacement
of the glass should be done by
a licensed or qualified service
technician.
WARNING: Do not attempt to
substitute the materials used on
this door, or replace cracked or
broken glass with any materials
other than those provided by the
appliance manufacturer.
WARNING: Handle this glass
with extreme care! Tempered
glass is susceptible to damage
– donotscratchorhandleroughly
while reinstalling the glass door
frame.
WARNING: The glass door of this
appliance must only be replaced
as a complete unit as provided by
the manufacturer. Do not attempt
to replace broken, cracked or
chipped glass separately.
WARNING: Do not attempt to
touch the front enclosure glass
withyourhandswhilethefireplace
is in use.
Removing Glass Enclosure Panels
(see Figure 5)
1. To access the glass door securing latches,
firstopenthelowercontrolcompartmentdoor
(Figure 5 ) by lifting and pulling the bottom
panel forward.
2. Pull the latches forward and down to release
them from the door channel.
3. Pull the bottom of the door out a few inches
and grasp it on the right and left. Gently lift to
release the door from its channel above the
door. Pull the door forward.
WARNING: Any safety screen or
guard removed for servicing this
appliance must be replaced prior
to operating the appliance.
4. Retrieve the glass door. Visually inspect the
gasket on the backside of the frame. Gasket
surface must be clean, free of irregularities
and seated firmly.
5. Position the door in front of the firebox
opening with the bottom of the door held away
from the fireplace (Figure 5). Hook the top
flange of the door frame over the top of the
firebox frame.
6. Let the bottom of the door frame swing
gentlyintowardsthefireplace ensuring that the
gasket seats evenly as the door frame draws
shut.Fastenthetwolatcheslocatedunderneath
the firebox floor to the door's vee-flange. Close
both the latches securely.
7. If desired, install the optional hood. Note
the location of the three clips inside the top air
channel above the door. The clips are equally
spaced on the top surface of the air channel
opening. Use a screwdriver to open the clips
slightly if needed. Engage the back edge of the
eyebrow into the clips to secure.
Inspect and clean all wire connections. Ensure
that there is no melting or damage. Inspection
should include:
• Terminals at the Valve
• OFF/ON Switch
• (Optional Control Switch) Wall Thermostat,
Remote Control or Remote Wall Switch Kit
Inspect Burner Flame Appearance
Ensure that the burner flame appearance
resembles the flame shown in Figures 11
and 12 and 13 and as described in Flame
Appearance and Sooting on Page 12.The
Homeowner must contact a qualified service
technician at once if any abnormal condition
is observed.
Small Area Paint Touch-up
The finish of the appliance is a high-qual-
ity powdercoat. Only use factory supplied
powdercoat paint kit for touch-ups. Paint
is available at your local authorized Lennox
Hearth Products dealer. Never attempt to
paint a hot fireplace.
Do not attempt to repaint the appliance until
the finish is completely cured (see Burn-In
Period onPage4 ).Ifthesurfacelaterbecomes
stainedormarred,itmaybelightlysandedand
touched up with spray paint.
AVERTISSEMENT: Ne pas utiliser
l'appareil si le panneau frontal en
verren'estpasenplace,estcraqué
ou brisé. Confiez le remplace-
ment du panneau à un technicien
agréé.
Control
Compartment
Panel Hood
Glass
Door
Header
Spacing
Top
Standoffs
Flush
Nailing
Flange
1/2”
Nailing
Flange
5/8”
Nailing
Flange
Glass Door
Spring Latch
CAUTION: DO NOT abuse glass door by
striking or slamming shut.

8NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
INSTALL VOLCANIC STONE, GLOWING
EMBERS AND LOGS
Figure 6
4. Placement of Glowing Embers -
Separate the Embers (rockwool) into pieces
about the size of a quarter (see Figure 7 ).
Keep the pieces fluffed up, not matted. Dis-
tribute these pieces over the surface of the
burner, as shown in Figures 8 and 9. Do not
use more than is necessary. Ensure that the
main burner slots remain uncovered by the
ember material. Position the embers on the
small holes of the ember bed area.
Note: This appliance is provided with enough
Glowing Embers for several applications, do
not use all that is in a new bag at one time.
For best glowing effect, replace the ember
material annually.
Volcanic Stone
Place Volcanaic
Stone As Shown
NOTE: Turn off all electricity to the appliance
before you install volcanic stone, embers
and logs.
1. Remove the front glass enclosure panel
(see Removing Glass Enclosure Panels on
Page 7).
2. Always handle logs carefully to prevent
breakage.
3. Installdecorative volcanicstone -Sprinkle
the decorativevolcanic stoneinapleasingpat-
tern(seeFigure 6). Thevolcanicstone should
be placed directly on top of the firebox bottom,
along the slope and to the back at the right and
left sides of the burner. Position any ceramic
fiber liners before placing the stone. Logs can
be positioned after the volcanic stone.
REFERENCE
Firebox Accessories / Parts
Cat. No. Model No. Description
88L53 FGE Bag of Glowing Embers
(1 oz. rockwool)
80L42 FDVS Bag of Decorative
Volcanic Stone
Glowing Embers
Bag of Glowing
Embers (rockwool)
Separate into Quarter
Size (separate) Pieces
Figure 7
WARNING: The size and position
of the log set was engineered to
givethe applianceasafe,reliable
and attractive flame pattern. Any
attempt to use a different log set
in the fireplace will void the war-
rantyand willresultinincomplete
combustion, sooting, and poor
flame quality.
WARNING: This appliance is
not designed to burn wood. Any
attempttodosocouldcauseirrep-
arable damage to appliance and
prove hazardous to your safety.
WARNING: Iflogsarenotinstalled
according to the log installation
instructions, flame impingement
and improper combustion could
occur and result in soot and/or
excessive production of carbon
monoxide(CO),a colorless,odor-
less, toxic gas.
WARNING: DO NOT attempt to
install the logs until the appliance
installation has been completed,
the gas line connected and tested
for leaks and the initial burner
operation has been checked out.
5. Placement of Logs -
All logs that have locating notches or slots to
help ensure that they are properly positioned.
All top logs that rest on lower logs, do so over
notches,indentsornubs. Properlogplacement
is critical to prevent sooting. Logs should be
placedin thegapsbetweentheflame peaksand
should be positioned so they do not impinge
the flames.
MLDVT-30 & MLDVT-35 - Install the five logs
as Follows:
Carefully position the ceramic fiber logs over
the burner as shown in Figure 8. Logs should
be placed in the order shown and per the fol-
lowing instructions.
1. Place the rear log (1) as shown. Position
it on the left rear log bracket.
2. Place the left front log (2) as shown. Posi-
tion it against the left front of the log rack.
3. Place the right front log (3) as shown. Posi-
tion it against the right front of the log rack.
4. Place the left cross log (4) as shown. Posi-
tion it over the rear log (1), with the front of
the log resting on the log rack.
5. Place the right cross log (5) as shown.
Position it over the right log (3), and rest the
rear of the log over the right rear bracket.
MLDVT-40 & MLDVT-45 - Install the five logs
as Follows:
Carefully position the ceramic fiber logs over
the burner as shown in Figure 9. Logs should
be placed in the order shown and per the fol-
lowing instructions.
1. Place the rear log (1) as shown. Position
it on the left rear log bracket.
2. Place the left front log (2) as shown. Posi-
tion it against the left front of the log rack.
3. Place the right front log (3) as shown. Posi-
tion it against the right front of the log rack.
4. Place the left cross log (4) as shown. Posi-
tion it over the rear log (1), with the front of
the log resting over log (2).
5. Place the right cross log (5) as shown.
Position it over the right log (3), and rest the
rear of the log over the right rear bracket.

9
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Figure 8
Step 2
Step 3
Step 4
Step 1
Log
Number Description
1 Rear Log
2 Left Front Log
3 Right Front Log
4 Left Cross Log
5 Right Cross Log
WARNING: Logs get very hot and will remain hot up to one hour after gas supply is turned off. Handle
only when logs are cool.
Left Rear Log Bracket Right Rear Log Bracket
Rockwool
(Do Not Place Rockwool Over Burner Slots)
Log RackVolcanic Stone
45
3
2
1
2
3
1
Position on the left
rear log bracket Right Rear Log Bracket
Position against the left
side of the log rack
Position against the right
side of the log rack
4
5
Position over rear log (1)
and against log rack
Position on the right rear
log bracket
MLDVT-30 & MLDVT-35 LOG PLACEMENT (model-35 shown, model-30 similar)
Catalog Number for the entire log set:
MLDVT-30: H7???
MLDVT-35: H7666

10 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Figure 9
Step 2
Step 3
Step 1
Step 4
WARNING: Logs get very hot and will remain hot up to one hour after gas supply is turned off. Handle
only when logs are cool.
45
3
2
1
3
5
Rockwool
(Do Not Place Rockwool Over Burner Slots)
Log RackVolcanic Stone
Right Rear Log Bracket
1
Position on the left
rear log bracket 4
23
Position the left front log (2) and the right front log (3) against
the log rack.
3
2
Log
Number Description
1 Rear Log
2 Left Front Log
3 Right Front Log
4 Left Cross Log
5 Right Cross Log
Rest over log (1) and log (2) with
the front resting on the log rack.
Position on the right rear log
bracket and over log (3)
MLDVT-40 & MLDVT-45 LOG PLACEMENT (model-40 shown, model-45 similar)
Catalog Number for the entire log set:
MLDVT-40: H7667
MLDVT-45: H7???

11
NOTES:

12 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
BURNER ADJUSTMENTS
(QUALIFIED TECHNICIANS ONLY)
Flame Appearance and sooting
Proper flame appearance is a flame which is
blueatthe base andbecomesyellowish-orange
in the body of the flame. When the appliance
is first lit, the entire flame may be blue and will
graduallyturnyellowish-orangeduringthe first
15 minutes of operation. If after a short period
the flame stays lowered blue, or if the flame is
orange with evidence of sooting (black tip), the
air shutter opening may need to be adjusted.
Iftheairshutteropeningsclosedtoofar,sooting
maydevelop. Sootingisindicatedbyblackpuffs
developingatthetipsofverylongorangeflames.
Sootingresults inblackdepositsformingon the
logs, appliance inside surfaces and on exterior
surfacesadjacenttotheventtermination. Soot-
ing is caused by incomplete combustion in the
flames and lack of combustion air entering the
air shutter opening. To achieve a warm yellow-
ish-orange flame with an orange body that does
not soot, the shutter opening must be adjusted
between these two extremes.
Air Shutter Adjustment Guidelines
• If there is smoke or soot present, first check
the log set positioning to ensure that the
flames are not impinging on any of the logs.
If the log set is properly positioned and a
sooting condition still exists, then the air
shutter opening should be increased.
• Themoreoffsetsintheventsystem,thelarger
the air shutter opening will need to be.
• An appliance operated with the air shutter
opened too far, may have flames that appear
blue and transparent. These weak, blue and
transparent flames are termed anemic.
• Propane models may exhibit flames which
candle or appear stringy. If this is present and
persists, adjust the air shutter to a more open
position, then operate the appliance for a few
moreminutestoensurethattheflamenormal-
izes and the flames do not appear sooty.
The following chart is provided to aid you in
achieving the correct air shutter adjustment
for your installation.
Air Shutter Adjustment Guidelines:
Amount of
Primary Air
Flame
Color
Air Shutter
Adjustment
If air shutter is
closed too far Flame will be orange Air shutter gap should be
increased
If air shutter is
open too far Flame will be blue Air shutter gap should be
decreased
Figure 10 - Burner Flame Appearance Model MLDVT-30 & MLDVT-35
Figure 11 - Burner Flame Appearance Model MLDVT-40 & MLDVT-45

13
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Adjustment
Rod Up
(closed min.
position)
Air Shutter
Burner
Tube
Adjustment Set-Screw
Ref. Air shutter Patent:
U.S. Pat. 5,553,603
Adjustment Rod Down
(fully open air opening
position)
Electronic Appliance Checkout
To light the burner, refer to the lighting instruc-
tions on Page 20. Ensure the igniter lights the
pilot. The pilot flame should engulf the flame
sensor as shown in Figure 14.
Figure 14
ELECTRONIC PILOT ASSEMBLY
Thermocouple
Thermopile
Pilot
Nozzels
SIT MILLIVOLT PILOT ASSEMBLY
3/8" Min.
(9 mm)
Igniter Rod
Hood
Proper Pilot Flame Appearance
Millivolt Appliance Checkout
The pilot flame should be steady, not lifting
or floating. Flame should be blue in color with
traces of orange at the outer edge.
The top 3/8" (10 mm) at the pilot generator
(thermopile) and the top 1/8" minimum (tip)
of the quick drop out thermocouple should be
engulfed in the pilot flame. The flame should
project 1" (25 mm) beyond the hood at all three
ports. See Figure 13.
To light the burner, refer to the lighting instruc-
tions on Page 18.
WARRANTY
Your gas appliance is covered by a limited
twenty year warranty. You will find a copy
of the warranty accompanying this manual.
Please read the warranty to be familiar with
its coverage.
Retain this manual. File it with your other
documents for future reference.
Figure 13
Figure 12
CAUTION: Carbon will be pro-
duced if the air shutter is closed
too much. Any damage due to
carboning resulting from improp-
erly setting the air shutter is not
covered under the warranty.
Note: If the igniter is damaged, a
replacement kit is available, order
Catalog Number 87L54.
Burner Air Shutter Adjustment Procedure
1. Locate adjustmentrodandadjustair shutter
to the standard setting as shown in Figure
12 (adjustment rod is located in the lower
control compartment).
Note: Rotating the adjustment rod down to
decrease air and up to increase air.
2. Lightappliance(followlightingprocedureon
lighting label in control compartment or see
the lighting instructions, pages 18 and 20
in this manual).
3. Allowtheburnertooperateforatleast15min-
utes while observing the flame continuously
to ensure that the proper flame appearance
has been achieved (see Figure 10 or 11). If
the following conditions are present, adjust
accordingly.
• If flame appears weak or sooty, adjust
theairshutter,incrementally,toa more
open position until the proper flame
appearance is achieved.
• If flame stays lowered blue, adjust the
air shutter, incrementally, to a more
closed position until the proper flame
appearance is achieved.
4. Leave the control knob (off/pilot/on) in the
ON position and the burner OFF/ON switch
OFF (and remote switches, if applicable).
5. When satisfied that the burner flame ap-
pearance is normal, close the lower control
compartment door.
WARNING: Air shutter adjust-
ment should only be performed by
a qualified professional service
technician.
WARNING: Ensure front glass
panel is in place and sealed during
adjustment.
CAUTION: The air shutter door and
nearby appliance surfaces are hot.
Exercisecautiontoavoidinjurywhile
adjusting flame appearance.
ELECTRONIC
Pilot
Hood
Sensor
Igniter
Main Burner Factory Air Shutter
Opening Setting - Inches (millimeter)
Model Natural
Gas
Propane
Gas
MLDVT-30 1/32"
(0.795 mm)
1/8"
(3.2 mm)
MLDVT-35 1/32"
(0.795 mm)
1/8"
(3.2 mm)
MLDVT-40 1/32"
(0.795 mm)
1/4"
(6.4 mm)
MLDVT-45 1/32"
(0.795 mm)
3/16"
(4.8 mm)
Burner Air Shutter Adjustment

14 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Normally, all parts should be ordered through
your Lennox distributor or dealer. Parts will be
shipped at prevailing prices at time of order.
When ordering repair parts, always give the
following information:
1. The model number of the appliance.
2. The serial number of the appliance.
3. The part number.
4. The description of the part.
5. The quantity required.
6. The installation date of the appliance.
WIRING DIAGRAMS
Wiring diagrams are provided here for reference purposes only. This information is also provided on schematics attached directly to the appliance
on a pullout panel located within the control compartment.
CAUTION: LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS. WIRING ERRORS CAN CAUSE IMPROPER
AND DANGEROUS APPLIANCE OPERATION.
Your Fireplace's Model Number________________________________________
Your Fireplace's Serial Number ________________________________________
The Date On Which Your Fireplace Was Installed___________________________
The Type of Gas Your Fireplace Uses ____________________________________
Your Dealer's Name ________________________________________________
If you encounter any problems or have any
questions concerning the installation or ap-
plication of this system, please contact your
dealer, distributor, or Lennox directly:
LENNOX HEARTH PRODUCTS
1110 West Taft Avenue
Orange, CA 92865
visit us at www.Lennox.com
PRODUCT REFERENCE INFORMATION
We recommend that you record the following
important information about your fireplace.
Please contact your Lennox distributor or
dealer for any questions or concerns. For the
number of your nearest Lennox dealer, please
call 1-800-9-LENNOX
REPLACEMENT PARTS
A complete parts list is found at the end of
this manual. Use only parts supplied from the
manufacturer.
Withpropercare andmaintenance,your appli-
ance will provide many years of enjoyment. If
you should experience any problem, first refer
to the troubleshooting guide in this manual.
If problem persists, contact your Lennox
distributor or dealer.
JUNCTION BOX
W
GR
BK
120 VAC
BK
R
TRANSFORMER 3V
INTERMITTENT ELECTRONIC WIRING DIAGRAM
BROWN
BROWN
BLACK
BATTERY BACK-UP
TO WALL
SWITCH, FRS
OR THERMOSTAT
BLACK (SENSOR)
BLACK (IGNITER)
SPARK TO PILOT IGNITER
IGNITER MODULE
3V
RED
BK WGR
OPTIONAL BLOWER
SWITCH
FAN
(OPTIONAL)
PILOT
IN
OUT
VENT
LO
HI
TH
TP
TH
TP
IN
ORANGE (THTP)
BLACK (TP)
GREEN (TH)
TP-TH
TP
TH
OPTIONAL APPLIANCE-
MOUNTED ON/OFF
SWITCH
BK/W(1)
BK/W(1)
WALL-MOUNTED ON/OFF SWITCH (OPTIONAL)
THERMOSTAT (OPTIONAL)
JUNCTION BOX
BLACK
W
GR
120 V
AC
WALL MOUNTED CONFIGURATION FOR FAN SWITCH (OPTIONAL)
BK
R
WIRING DIAGRAM MILLIVOLT GAS VALVES
THERMOPILE
GAS VALVE
FAN
(OPTIONAL)

15
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
ACCESSORY COMPONENTS
Remote Control Kit, Standard
Cat. No. Model No. Description
H0249 RCL Remote Control System
(Standard)
Remote Control Kit, Deluxe
Cat. No. Model No. Description
H0251 RCL-STAT Remote Control System
(Deluxe)
Digital Wall Thermostat
The wall thermostat kit provides temperature control
for optimum comfort.
Wall Thermostat, Millivolt
Cat. No. Model No. Description
H4635 DWTK Wall Thermostat Kit,
White
Product Reference Information
Cat.
No.
Model Ship.
Weight
Ship.
Volumn
H7506 MLDVT-30NM 78 lb. 9.09 cu. ft.
H7507 MLDVT-30PM 78 lb. 9.09 cu. ft.
H7508 MLDVT-30NE 78 lb. 9.09 cu. ft.
H7511 MLDVT-35NM 86 lb. 10.61 cu. ft.
H7512 MLDVT-35PM 86 lb. 10.61 cu. ft.
H7515 MLDVT-35NE 86 lb. 10.61 cu. ft.
H7516 MLDVT-40NM 108 lb. 14.01 cu. ft.
H7517 MLDVT-40PM 108 lb. 14.01 cu. ft.
H7518 MLDVT-40NE 108 lb. 14.01 cu. ft.
H7519 MLDVT-45NM 122 lb. 15.76 cu. ft.
H7520 MLDVT-45PM 122lb. 15.76 cu. ft.
H7521 MLDVT-45NE 122 lb. 15.76 cu. ft.
Rocker Switch Kit
Cat. No. Model No. Description
80L41 FRS Rocker Switch Kit
Unit-Mountable Rocker Switch
This rocker switch kit can be installed directly in
the gas valve mounting bracket (millivolt gas valve
equipped fireplaces) to provide On/Off operation in
lieu of a wall switch.
Standard Remote Control System
The Model RCL (Standard) Remote Control System,
features a simplistic OFF/ON control function for the
fireplace. Thismodelincludesahand-heldtransmitter,
a remote receiver with wall-mount cover plate and
all hardware required to install the unit. The remote
receiver can be wall or hearth mounted.
The transmitter has ON and OFF functions that are
activated by pressing either button on the face of
the transmitter. When a button on the transmitter
is pressed, a signal light illuminates briefly to verify
that a signal has been sent.
The Model RCL is designed to operate with all mil-
livolt ignition systems, as well as electronic ignition
systems. It may be installed with use for either
natural gas or propane gas appliances. The RCL
offers ease of installation and allows you to execute
on-off commands to the fireplace effortlessly with
one simple motion.
TheModelRCL comescompletewithdetailed operat-
ing instructions.
Deluxe Remote Control System
The Model RCL-T (Deluxe) Remote Control System
has all of the features of the standard system along
withanaddedeasytoreadLCDscreenwhichpresents
access to many enhancements, including; battery
power level indicator, timer, mode of operation,
thermostatic display including room temperature in
either metric of English units, flame indicator and
clock. Fully programmable, the Model RCL-T allows
for virtual command over nearly all operational and
temperature variables, using the hand held remote
control transmitter.
The Model RCL-T (Deluxe) remote control system
is installed in the same manner as the standard
system, may be operated with electronic and mil-
livolt systems with either natural gas or propane gas.
The RCL-T comes complete with detailed operating
instructions.
Screen Panel Kits
Cat. No. Model No. Models Where Used
H6094 30MSKP MLDVT-30
H6095 35MSPK MLDVT-35
H3989 40LSPK MLDVT-40
H3990 45LSPK MLDVT-45
Barrier Screen Panel Kit
This easy to install optional screen panel installs over
thestandardglassenclosurepanelandprovidesabar-
riertopreventdirectcontactwiththehotglasssurface.
These screen panels cannot be used in conjunction
with the arch door kits or door frame kits.

16 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Style View Screen Doors -
These Style View doors are easy to install and will not require hardware to atach them to the standard glass door frame. The Style
View door installs over the standard glass enclosure panel and provides a barrier to prevent direct contact with the hot glass surface.
The door includes heavy duty magnet door latches and functional twin-pane screen doors.
ACCESSORY COMPONENTS CONTINUED
Screen Panel Kits
Cat. No. Model No. Models Where Used
H6112 PSFPKM30 MLDVT-30
H6113 PSFPKM35 MLDVT-35
H6114 PSFPKM40 MLDVT-40
H6115 PSFPKM45 MLDVT-45
Pull Screen Panel Kit
This easy to install optional decorative screen kit
installs over the standard glass enclosure panel.
These screen kits cannot be used in conjunction with
the arch door kits or door frame kits.
Arch Pane Design Square Pane Design
ARCH PANE DESIGN KITS
Cat. No. Model Description Model Series
35” Arch Pane Door, Painted
35” Arch Pane Door, Satin Pewter
MLDVT-35
H6106 APDML35C
H6107 APDML35SP
40” Arch Pane Door, Painted MLDVT-40
40” Arch Pane Door, Satin Pewter
H6108 APDML40C
H6109 APDML40SP
30” Arch Pane Door, Painted MLDVT-30
30” Arch Pane Door, Satin Pewter
APDML30C
APDML30SP
H6104
H6105
45” Arch Pane Door, Painted
MLDVT-45
45” Arch Pane Door, Satin Pewter
APDML45C
APDML45SP
H6110
H6111
SQUARE PANE DESIGN KITS
Description Model Series
35” Square Pane Door, Painted
35” Square Pane Door, Satin Pewter
MLDVT-35
H6098 SPDML35C
H6099 SPDML35SP
40” Square Pane Door, Painted MLDVT-40
40” Square Pane Door, Satin Pewter
H6100 SPDML40C
H6101 SPDML40SP
Cat. No. Model
30” Square Pane Door, Painted MLDVT-30
30” Square Pane Door, Satin Pewter
SPDML40C
SPDML40SP
H6096
H6097
45” Square Pane Door, Painted
MLDVT-45
45” Square Pane Door, Satin Pewter
SPDML45C
SPDML45SP
H6102
H6103

17
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Bag of Glowing Embers
Bag of Volcanic Stone
Replacement ember materi-
als or volcanic stone are
available for use with these
appliances.Orderkits aspart
of the periodic maintenance
of the appliance.
Decorative Firebox Accessories
(all models)
Cat. No. Model No. Description
88L53 FGE Bag of Glowing Embers
(1 oz. rockwool)
80L42 FDVS Bag of Decorative
Volcanic Stone
Forced Air Kit
TheFBK-100blowerprovidesconstantvelocityforced
air circulation. The FBK-200 assembly with variable
speed,wall-mountableswitchprovidesvariablespeed
forced air circulation.
Forced Air Blower Kits
Cat.
No.
Model No. Description
80L84 FBK-100 Blower, Standard
(single speed)
80L85 FBK-200 Blower, Variable Speed
(w/wall-mounted switch)
H7841 FBK-300 Blower, Variable Speed
(w/thermal snap switch)
Variable Speed Wall
Switch
Provides variable speed
control if optional blower kit
is purchased.
Variable Speed Wall Switch
Cat. No. Model No. Description
045571H VSWS Rocker Switch Kit
Brickaded Wall Liner Kits
Cat. No. Model No. Description
H7523 MBLPK-30B Brick Liner Kit, Buff
MLDVT-30
H7525 MBLPK-35B Brick Liner Kit, Buff
MLDVT-35
H7528 MBLPK-40B Brick Liner Kit, Buff
MLDVT-40
H7531 MBLPK-45B Brick Liner Kit, Buff
MLDVT-45
H7524 MBLPK-30R Brick Liner Kit, Red
MLDVT-30
H7526 MBLPK-35R Brick Liner Kit, Red
MLDVT-35
H7529 MBLPK-40R Brick Liner Kit, Red
MLDVT-40
H7532 MBLPK-45R Brick Liner Kit, Red
MLDVT-45
H7525 MBLPK-30H Brick Liner Kit,
Herringbone MLDVT-30
H7527 MBLPK-35H Brick Liner Kit,
Herringbone MLDVT-35
H7530 MBLPK-40H Brick Liner Kit,
Herringbone MLDVT-40
H7533 MBLPK-45H Brick Liner Kit,
Herringbone MLDVT-45
Brickaded Panel Liner Kit
The brickaded liner kits include ceramic panels as
shown here. The panels have brick-like features
in relief.
ACCESSORY COMPONENTS CONTINUED
Touch-Up Paint Kit
Repair of minor scratches and discoloration of the
applianceblackpaintedsurfacesmaybeaccomplished
with the touch-up paint kit.
Touch-Up Paint Kits
(all models)
Cat. No. Model No. Description
90L73 FTPK-B Touch-Up Paint (Black)
P
A
I
N
T
Termination Guard Kits
(all models)
Cat. No. Model No. Description
H5820 4.5HTSK Termination Shroud
87L02 SV4.5HGS Termination Guard,
Deluxe
17M52 SV4.5HGS-1 Termination Guard,
Square
Square Termination
Guard (Fits 94L10)
Deluxe Termination
Guard (Fits 94L10)
Termination Guard Kits
The vent termination guards may be used to cover
the vent termination on the exterior of the home
to minimize exposure to the hot surface of the
termination.
Termination Shroud
(Fits H1968)
OFF/ON Wall Switch Kit
The OFF/ON wall switch kit may be used to control
theoperationof thefireplaceburneror blower.Install
the OFF/ON wall switch in a convenient location near
the fireplace.
White Wall Switch Kit
Cat. No. Model No. Description
85L87 FWSK OFF/ON Wall Switch Kit

18
LIGHTING INSTRUCTIONS – MILLIVOLT GAS VALVE
FOR YOUR SAFETY READ BEFORE LIGHTING
A. This appliance has a pilot which must be lighted with a piezo
igniter. When lighting the pilot, follow these instructions
exactly.
B. BEFORE OPERATING 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
•Extinguish any open flame.
•Open windows.
•Do not light any appliance.
•Do not touch any electrical switches.
TO TURN OFF GAS TO APPLIANCE
1. Turn remote wall switch “OFF.” The pilot will remain lit for nor-
mal service.
2. For complete shutdown, turn remote wall switch to “OFF.”
3. Access the lower control compartment.
4. Depress gas control knob slightly and turn clockwise
to “OFF.” Do not force.
5. Close lower control compartment.
LIGHTING INSTRUCTIONS
6. Wait five (5) minutes to clear out any gas. If you then smell gas,
STOP! Follow “B” in the safety information above on this page. If you
do not smell gas, go to the next step.
7. Push in gas control knob slightly and turn counterclockwise
to “PILOT.”
8. Push in control knob all the way and hold in. Immediately light the
pilot by triggering the spark igniter (pushing the button) until pilot
lights. Continue to hold the control knob in for about 1-1/2 minutes
after the pilot is lit. Release knob and it will pop back up. Pilot should
remain lit. If it goes out, repeat steps 5 through 8.
•If knob does not pop up when released, stop
and immediately call your service
technician or gas supplier.
•If pilot will not stay lit after several
tries, turn the control knob to “OFF”
and call your service technician or
gas supplier.
9. Turn gas control knob counterclockwise
to “ON.”
10. Close lower control compartment.
•Do not use any phone in your building.
•Immediately call your gas supplier from a neighbor’s
phone.
•If your gas supplier cannot be reached, call the fire depart-
ment.
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,
do not try to repair it, call a qualified service technician. Force
or attempted repair may result in a fire or an 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.
Note: Knob cannot be turned from “PILOT” to “OFF”
unless the knob is pushed in slightly. Do not force.
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WARNING: IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION MAY
RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.
1. STOP! Read the safety information above on this page.
2. Access the lower control compartment.
3. Turn remote wall switch to “OFF.”
4. Verify main line shut-off valve is open.
5. Push in gas control knob slightly and turn clockwise
to “OFF.”

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INSTRUCTIONS D’ALLUMAGE – VANNE GAZ MILLIVOLT
INSTRUCTIONS D'ALLUMAGE
POUR VOTRE SÉCURITÉ, LISEZ CES INSTRUCTIONS AVANT L’ALLUMAGE
A. Cet appareil est muni d’une veilleuse qui doit être allumée avec un
allumeur piézo-électrique. Lorsque vous allumez la veilleuse, suivre
exactement ces instructions.
B. AVANTL’ALLUMAGE:Assurez-vousquevousnedétectezaucuneodeur
de gaz autour de l’apareil ainsi que près du sol; certains gaz, étant plus
lourds que l’air, descendent au niveau du sol.
VOICI CE QUE VOUS DEVEZ FAIRE SI VOUS DÉCELEZ UNE ODEUR
DE GAZ:
•Éteignez toute flamme visible.
•Ouvrez les fenêtres.
•N’allumez aucun appareil.
•Ne touchez à aucun commutateur électrique.
•Ne vous servez d’aucun téléphone dans votre édifice.
•Appelez immédiatement votre compagnie de gaz en utilisant le télé-
phone du voisin.
•S’il vous est impossible de contacter votre compagnie de gaz, appelez
le service des incendies.
C. N’utilisez que votre main pour manipuler le bouton de réglage du gaz.
N’utilisez jamais d’outils. Si le bouton refuse de tourner ou de bouger,
n’essayez pas de le réparer. Communiquez immédiatement avec un
technicien de service qualifié. Toute tentative pour le forcer ou le
réparer, risquerait de provoquer un incendie ou une explosion.
D. Ne vous servez pas de cet appareil si l’un de ses éléments a été
immergé dans l’eau. Appelez immédiatement un technicien compétent
pour faire inspecter l’appareil et remplacer toute pièce du système de
réglage ou commande du gaz qui a été sous l’eau.
1. Tournez l’interrupteur mural à la position d’arrêt “OFF”. La veilleuse
restera allumée jusqu’au retour du service normal.
2. Pour une fermeture complète, tournez l’interrupteur mural à la posi-
tion d’arrêt “OFF”.
3. Ouvrez le compartiment de contrôle du bas.
POUR FERMER LE GAZ QUI ALIMENTE L’APPAREIL
4. Enfoncez légèrement le bouton de réglage du gaz et tournez-le dans
le sens des aiguilles d’une montre jusqu’à la position
d’arrêt “OFF”. Ne forcez pas le bouton.
5. Fermez le compartiment de contrôle du bas.
8. Enfoncez le bouton de réglage jusqu’au fond et gardez-le enfoncé.
Allumez immédiatement la veilleuse en déclenchant l’allume-gaz
à étincelle (en poussant le bouton) jusqu’à ce que la veilleuse
s’enflamme. Continuez de tenir le bouton de réglage enfoncé pen-
dant environ 90 secondes après l’allumage de la veilleuse. Relâ-
chez le bouton et il sortira subitement. La veilleuse devrait rester
allumée. Si elle s’éteint, répétez les étapes 5 à 8 inclusivement.
• Si le bouton ne sort pas automatiquement après avoir été relâché,
arrêtez immédiatement et téléphonez à votre technicien de service
ou à votre fournisseur de gaz.
• Si la veilleuse refuse de rester al-
lumée après plusieurs tentatives,
tournez le bouton de réglage jusqu’à
sa position d’arrêt “OFF” et télé-
phonez à votre technicien de service
ou à votre fournisseur de gaz.
9. Tournez le bouton de réglage du gaz
en sens inverse des aiguilles d’une
montre jusqu’à sa position de marche “ON”.
10. Fermez le compartiment de contrôle du bas.
11. Au besoin, rebrancher l’appareil au courant électrique et remettre
l’interrupteur du brûleur principal à la position “ON” ou régler le
thermostat à la température désirée.
12. Si l’appareil ne fonctionne pas, suivre les instructions intitulées
“Pour fermer le gaz qui alimente l’appareil” et appeler un tech-
nicien ou le fournisseur de gaz.
Remarque: Il est impossible de tourner le bouton de “PILOT” à “OFF” à
moins qu’il ne soit légèrement enfoncé. Ne le forcez pas.
6. Attendez cinq (5) minutes pour l’evacuation du gaz. Si vous décelez
une odeur de gaz, ARRÊTEZ ! Retournez au point “B” des con-
signes de sécurité au verso de cette plaque. Si vous ne remarquez
aucune odeur de gaz, passez à l’étape suivante.
7. Enfoncez légèrement le bouton de réglage du gaz et tournez-le en
sens inverse des aiguilles d’une montre jusqu’à la position de veil-
leuse “PILOT”.
1. ARRÊTEZ! Lisez les consignes de sécurité au verso de cette plaque.
2. Ouvrez le compartiment de contrôle du bas.
3. Tournez l’interrupteur mural à la position d’arrêt “OFF”.
4. Assurez-vous que la soupape d’arrêt de la canalisation principale est
ouverte.
5. Enfoncez légèrement le bouton de réglage du gaz et tournez-le dans
le sens des aiguilles d’une montre jusqu’à la position
d’arrêt “OFF”.
AVERTISSEMENT : SI VOUS NE SUIVEZ PAS CES INSTRUCTIONS À LA LETTRE, IL POURRAIT S’EN SUIVRE UN INCENDIE OU
UNE EXPLOSION CAUSANT DES DOMMAGES MATÉRIELS, DES BLESSURES CORPORELLES OU MÊME DES PERTES DE VIE.
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20
A. When lighting the appliance, follow these instructions
exactly.
B. BEFORE OPERATING 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
•Extinguish any open flame.
•Open windows.
•Do not light any appliance.
•Do not touch any electrical switches.
FOR YOUR SAFETY READ BEFORE LIGHTING
•Do not use any phone in your building.
•Immediately call your gas supplier from a neighbor’s
phone.
•If your gas supplier cannot be reached, call the fire
department.
C. 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.
LIGHTING INSTRUCTIONS — ELECTRONIC
1. For complete shut-down, turn remote wall switch to “OFF"
or set the thermostat to the lowest setting, if applicable.
2. Turn the ON/OFF switch to “OFF”. If step 1 is not applicable.
3. Turn off all electric power to the appliance and remove
backup batteries if service is to be performed or for
extended shutdown.
TO TURN OFF GAS TO APPLIANCE
LIGHTING INSTRUCTIONS
1. STOP! Read the safety information above on this page.
2. Turn remote wall switch to “OFF" or set wall thermostat
to lowest setting. If used, remove the batteries from the
battery holder.
3. This appliance is equipped with an ignition device which
automatically lights the pilot. Do not try to light the pilot
by hand.
4. Push the unit mounted "ON/OFF" switch to the "OFF" posi-
tion.
5. Allow sufficient length of time (minimum 5 minutes) for
any gas in the combustion chamber to escape. If you
still smell gas, STOP! Follow “B” in the safety informa-
tion above on this page. If you do not smell gas, go to the
next step.
6. Push the unit mounted "ON/OFF" switch back to the "ON"
position. (The "ON/OFF" switch may include a wall switch
if so equipped). Replace the batteries in the battery
holder, if used. If the burner does not light or stay lit after
several tries, turn the unit mounted "ON/OFF" switch to
the "OFF" position and call your service technician or gas
supplier. NOTE: Sufficient time must be allowed for air to
escape from lines if the unit is being lit for the first time.
7. Turn HI-LO burner control knob to desired setting and
close control door.
8. Set thermostat to desired setting if applicable.
9. If the appliance will not operate, follow the in-
structions "To Turn Off Gas To Appliance" and
call your service technician or gas supplier.
TO SHUT OFF
1. Turn off all electrical power to the appliance (remote wall
switch) or set the thermostat to the lowest setting, if ap-
plicable. Or remove batteries, if used.
WARNING: IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION MAY
RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.
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