HOMEOWNER'S CARE AND
OPERATION INSTRUCTIONS
DIRECT-VENT
MPD-33/35/40/45 SERIES
WARNINGS
VENTED GAS FIREPLACE HEATERS - DIRECT VENT MODELS
P/N 875,014M REV. K 03/2007
• Hot! Do not touch! The glass and
surfaces of this appliance will be hot
during operation and will retain heat
for a while after shutting off the appli-
ance. Severe burns may result.
MODELS
Millivolt Models
Electronic Models
• Carefully supervise children in the
same room as appliance.
MPDT-3328CNM MPD-4035CNM MPDT-3328CNE MPD-4035CNE
MPDT-3328CPM MPD-4035CPM MPDT-3328CPE MPD-4035CPE
MPDR-3328CNM MPD-4540CNM MPDR-3328CNE MPD-4540CNE
MPDR-3328CPM MPD-4540CPM MPDR-3328CPE MPD-4540CPE
• 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 Page 12
for ordering information.
MPD-3530CNM
MPD-3530CPM
MPD-3530CNE
MPD-3530CPE
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
WARNING:IFTHEINFORMATIONINTHISMANUAL
IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLO-
SION MAY RESULT CAUSING PROPERTY DAM-
AGE, PERSONAL INJURY OR LOSS OF LIFE.
AVERTISSEMENT: ASSUREZ-VOUS DE BIEN SUIVRE
LESINSTRUCTIONSDONNÉDANSCETTENOTICEPOUR
RÉDUIRE AU MINIMUM LE RISQUE D'INCENDIE OU
POUR ÉVITER TOUT DOMMAGE MATÉRIEL, TOUTE
BLESSURE OU LA MORT.
FOR YOUR SAFETY: Do not store or use gasoline
or other flammable vapors or liquids in the vicin-
ity of this or any other appliance.
FOR YOUR SAFETY: What to do if you smell gas:
POURVOTRESÉCURITÉ: Nepasentreposerniutiliser
d'essencenid'autrevapeursouliquidesinflammables
dans le voisinage de cet appareil ou de tout autre
appareil.
• DO NOT light any appliance.
• DO NOT touch any electrical switches.
• DO NOT use any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone.
POUR VOTRE SÉCURITÉ: Que faire si vous sentez une
odeur de gaz:
Follow your gas suppliers instructions.
• Ifyourgassuppliercannotbereached, callthe
fire department.
• Ne pas tenter d'allumer d'appareil.
• Netouchezàaucuninterrupteur. Nepasvousservir
des téléphones se trouvant dans le batiment où
vous vous trouvez.
• Evacuez la piéce, le bâtiment ou la zone.
• Appelez immédiatement votre fournisseur de gaz
depuis un voisin. Suivez les instructions du
fournisseur.
Installation and service must be performed by a
qualified installer, service agency or the gas
supplier.
OTL Report No. 116-F-13-4
• Si vous ne pouvez rejoindre le fournisseur de gaz,
appelez le service dos incendies.
A French manual is available upon request. Order Form Number
875,014CF.
L'installationetservicedoitêtreexécutéparunqualifié
installeur, agence de service ou le fournisseur de gaz.
Ce manuel d’installation est disponible en francais, simplement en
faire la demande. Numéro de la pièce 875,014CF.
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Minimum inlet gas pressure to these appliances
is5.0 incheswatercolumn(1.24kPa)fornatural
gas and 11 inches water column (2.74 kPa) for
propane for the purpose of input adjustment.
Millivolt Models with
Manually-Modulated Gas Valve
Propane Gas
WARNING: DO NOT PLACE CLOTH-
ING OR OTHER FLAMMABLE MATERI-
ALS ON OR NEAR THIS APPLIANCE.
Model Series
Input rate (BTU/H)
MPDT-3328
MPDR-3328
14,000 to 17,500
Maximum inlet gas supply pressure to these
appliances is 10.5 inches water column (2.61
kPa) for natural gas and 13.0 inches water
column (3.23 kPa) for propane.
AVERTISSEMENT: SURVEILLER LES
ENFANTS. GARDER LES VÊTEMENTS,
LESMEUBLES,L'ESSENCEOUAUTRES
LIQUIDES À VAPEUR INFLAMMABLES
LOIN DE L'APPAREIL.
MPD-3530
MPD-4035
MPD-4540
15,200 to 20,000
21,500 to 27,000
22,500 to 29,000
The appliance must be isolated from the gas
supply piping system (by closing its individual
manualshut-offvalve)duringanypressuretest-
ing of the gas supply piping system at test
pressuresequaltoorlessthan¹⁄₂ psig(3.5kPa).
Electronic Models -
Electronic models have a fixed rate gas valve.
Input of electronic models is shown in the
following table:
OPERATION AND CARE OF YOUR
APPLIANCE
Applianceoperationmaybecontrolledthrough
a remotely located optional wall switch. Sepa-
rateswitchesmayprovideindependentcontrol
for the remote controlled fireplace operation
(optional equipment).
Electronic Models with Fixed-Rate Gas Valve
Natural and Propane Gas
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 pressures in excess of ¹⁄₂ psig
(3.5 kPa).
Model Series
MPDT-3328
MPDR-3328
MPD-3530
MPD-4035
MPD-4540
Input rate (BTU/H)
17,500
20,000
27,000
29,000
In lieu of remote or remote wall switch opera-
tion, the appliance must be operated directly
through the controls located on the front of the
valve located within the control compartment
which is located behind the control compart-
ment access panel below the appliance front
glass enclosure panel. See Figure 1.
These appliances must not be connected to a
chimney or flue serving a separate solid fuel
burning appliance.
Thefollowingtableshowstheunits' orificesize
for the elevations indicated.
Any safety guard or screen removed for ser-
vicingtheappliancemustbereplacedpriorto
operating the appliance.
Gas Controls/Control Compartment
Access
Elevation
Feet
(meters)
Orifice size
Model
Series
WARNING: FAILURE TO COMPLY WITH
THEINSTALLATIONANDOPERATINGIN-
STRUCTIONS PROVIDED IN THIS DOCU-
MENT WILL RESULT IN AN IMPROP-
ERLY INSTALLED AND OPERATING AP-
PLIANCE,VOIDINGITSWARRANTY. ANY
CHANGE TO THIS APPLIANCE AND/OR
ITSOPERATINGCONTROLSISDANGER-
OUS. IMPROPER INSTALLATION OR
USE OF THIS APPLIANCE CAN CAUSE
SERIOUSINJURYORDEATHFROMFIRE,
BURNS, EXPLOSION OR CARBON MON-
OXIDE POISONING.
Nat.
Prop.
The gas controls can be found behind the
control compartment access panel.
MPDT-3328
MPDR-3328
#45 0.048 inch
Toopenthecontrolcompartmentaccesspanel,
actuate the spring-loaded magnetic catches
securing the panel, by gently depressing the
outer top corners of the panel until the catches
"pop" the door free, allowing it to swing out and
down to open.
MPD-3530
MPD-4035
MPD-4540
#44
#37 0.062 inch
#36 #52
#55
0-4500
(0-1370)
Operation of millivolt and electronic gas con-
trol systems are different. Before lighting
and operating your appliance determine if
you have a millivolt or electronic appliance.
See Figure 1 on page 4 for access to the
control compartment.
Maximum manifold pressure is 3.5 in. w.c.
(0.87 kPa) for natural gas and 10 in. w.c. (2.49
kPa) for LP/Propane gas.
Donotusetheseappliancesifanyparthasbeen
under water. Immediately call a qualified, pro-
fessional service technician to inspect the ap-
pliance and to replace any parts of the control
system and any gas control which have been
under water.
Carbon Monoxide Poisoning: Early signs of
carbon monoxide poisoning are similar to the
fluwithheadaches,dizzinessand/ornausea.If
you have these signs, obtain fresh air immedi-
ately. Turn off the gas supply to the appliance
and have it serviced by a qualified profes-
sional, as it may not be operating correctly.
Millivolt appliances will be fitted with the gas
controlvalveshowninFigure3(SIT)or Figure
4 (Honeywell) on page 4. Appliances with
electronic systems will be fitted with the elec-
tronic valve shown in Figure 2 on page 4.
Ne pas se servir de cet appareil s'il a été plongé
dans l'eau, complètement ou en partie. Appeler
untechnicienqualifiépourinspecterl'appareilet
remplacertoutepartiedusystèmedecontrôleet
toutecommandequiontétéplongésdansl'leau.
Familiarize yourself with the gas control valve
that your appliance uses.
WARNING: CHILDREN AND ADULTS
SHOULD BE ALERTED TO THE HAZARDS
OFHIGHSURFACETEMPERATURES.USE
CAUTION AROUND THE APPLIANCE TO
AVOID BURNS OR CLOTHING IGNITION.
YOUNG CHILDREN SHOULD BE CARE-
FULLY SUPERVISED WHEN THEY ARE IN
THE SAME ROOM AS THE APPLIANCE.
Millivolt Appliances -
Tolightmillivoltappliancesrefertothedetailed
lighting instructions found on page 12 (En-
glish) and page 13 (French). Millivolt appli-
ance lighting instructions may also be found
on the pull-out lighting instruction labels at-
tached to the gas control valve.
Test gage connections are provided on the
front of the millivolt gas control valve (identi-
fied OUT for the manifold side and IN for inlet
pressure. A ¹⁄₈" NPT test gage connection is
provided on the electronic gas control valve
adjacent to the outlet to the main burner.
3
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See Figure 2 (SIT), 3 (Honeywell) for the
location of the piezo ignitor.
Variable Flame Height Adjustment Inlet Pressure Port
Manifold Pressure Port
Millivolt appliances may be fitted with an optional
burner ON/OFF Rocker Switch. The optional ON/
OFF Rocker switch will be installed in the bracket
just beneath the gas control valve. Once the pilot
is lit, the ON/OFF rocker switch will control the
appliance ON/OFF operation. To operate: Toggle
the switch between its ON and OFF positions.
O U T I N
I
H
F
F
O
P
I
L
O
L
O
W
T
O
N
P
I
L
Piezo Ignitor
If your millivolt appliance is equipped with an
optional remote wall switch or remote control
kit and the pilot is lit, the appliance main burner
maybeturnedonandoffwiththewallswitchor
remote control.
Main Gas
Control Knob
Piezo Ignitor
Optional Burner ON/OFF
Rocker Switch Location
Factory-Installed Blower ON/OFF
Rocker Switch Location
SIT Gas Valve
Figure 3
SIT Millivolt Gas Valve
Inlet
Pressure Port
Manifold
Pressure Port Piezo Ignitor
F
T
F
O
LO
Drop Down
Control
I
H
I
P
O
L
N
O
Compartment
Honeywell
Gas Valve
Access Panel
Piezo Ignitor
Piezo Ignitor
Sit and Honeywell Millivolt Gas Valve
Showing Piezo Ignitor Location (Each Unit is
Equipped with Only One of these Gas Valves)
Optional ON/OFF Rocker Switch
Location (One of Two Places)
Variable Flame
Height Adjustment
Optional Burner ON/OFF Main Gas
Rocker Switch Location Control Knob
Figure 4
Honeywell Millivolt Gas Valve
Figure 1
Electronic Appliances -
If your electronic appliance is equipped with
an optional remote wall switch or remote con-
trol kit the appliance main burner may be
turned on and off with the wall switch or
remote control.
2. Whenlitforthefirsttime, thisappliancewill
emit a slight odor for an hour or two. This is
due to the “burn-in” of internal paints and
lubricantsusedinthemanufacturingprocess.
To light electronic appliances refer to the de-
tailed lighting instructions found in both En-
glish and French on pages 14 and 15 of these
instructionsrespectively.Electronicappliance
lighting instructions may also be found on
the pull out lighting instruction labels at-
tached to the gas control valve.
3. Keep lower control compartment clean by
vacuuming or brushing at least twice a year.
More frequent cleaning may be required due to
excessive lint from carpeting, bedding materi-
als, etc. It is important that control compart-
ments, burners and circulating air passage-
waysoftheappliancebekeptcleanandclearof
obstructions of venting and combustion air.
If your electronic appliance is not equipped
with a wall switch or remote control, the main
burner must be turned off and on with the gas
control switch. Toggle the switch from ON to
OFF to operate the main burner .
ON/OFF Switch
Manifold Pressure Port
Variable Flame Height Adjustment
( Millivolt Appliances only)
Inlet
Pressure
Port
4. Always turn off gas to the pilot (millivolt
appliances) before cleaning. Before re-light-
ing, refer to the lighting instructions in this
manual. Instructions are also found on a pull-
out panel located on the floor of the appliance.
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, alter-
nately, while the appliance is in operation.
Electronic
Gas Control
Valve
5. Always keep the appliance area clear and
freefromcombustiblematerials, gasolineand
other flammable liquids.
Honeywell Electronic Gas Valve
Adjusttheflameheightasdesiredafterlighting
the appliance by rotating the variable adjust-
ment control knob located on the front of the
valve (refer to Figure 3 - SIT, 4 - Honeywell).
Figure 2
6. Remember, Millivolt appliances have a con-
tinuous burning pilot flame. Exercise caution
whenusingproductswithcombustiblevapors.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
4
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Maintenance Schedule
Annually (Before the onset of the Burning Season)
Maintenance Task
Accomplishing Person
Procedure
Inspecting/Cleaning Burner, Logs
and Controls
Qualified Service Technician
Inspectvalveandensureitisproperlyoperating.
Check piping for leaks. Vacuum the control
compartment, fireplace logs and burner area.
Check Flame Patterns and Flame Height
Inspecting/Cleaning Pilot and Burner
Qualified Service Technician
Qualified Service Technician
RefertoFigure 7 (MPD-3328), 8 (MPD-3530)
or 9 (MPD-4035, MPD-4540) on page 7 and
verify the flame pattern and height displayed
by the appliance conforms to the picture.
Flames must not impinge on the logs.
Refer to Figure 10 (SIT Millivolt), Figure 11
(Honeywell Millivolt) or Figure 12 (Elec-
tronic) on page 8. Remove any surface
build-uponpilotandburnerassembly. Wipe
thepilotnozzles,ignitor/flamerodandhood.
Ensure the pilot flame engulfs the flame
sensor as shown.
Checking Vent System
Qualified Service Technician
Inspect the vent system at the top and at the
base (within the firebox) for signs of blockage
or obstruction. Look for any signs of disloca-
tion of the vent components.
Appliance Checkout
Qualified Service Technician
Perform the appropriate appliance checkout
procedure detailed in this manual.
Replacing Rockwool Ember Materials
Homeowner/Qualified Services Technician
Remove old ember materials and vacuum the
screenedrockwoolplacementarea. Placenew
rockwool as described in this document.
Periodically (After the Burning Season)
Maintenance Task
Accomplishing Person
Procedure
Carefully remove logs, Rockwool and volca-
nic stone if used. Vacuum out interior of the
firebox. Clean firebox walls and log grate.
Replace logs, Rockwool and volcanic stone
as detailed in this manual.
Cleaning Firebox Interior
Homeowner
Refer to Figure 7 (MPD-3328), 8 (MPD-3530)
or 9 (MPD-4035, MPD-4540) on page 7 and
verifytheflamepatternandheightdisplayedby
the appliance conforms to the picture. Flames
must not impinge on the logs.
Check Flame Patterns and Flame Height
Checking Vent System
Homeowner
Homeowner
Inspect the vent system at the top and at the
base (within the firebox) for signs of block-
age or obstruction. Look for any signs of
dislocation of the vent components.
Clean as necessary following the directions
providedinthismanual. DO NOT TOUCH OR
ATTEMPT TO CLEAN GLASS WHILE HOT.
Cleaning Front Glass Enclosure Panel
Homeowner
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These are direct-vent appliances. They are
designed to operate only with the front glass
enclosure panel properly installed. Generally,
the glass enclosure panel should not be re-
moved except to gain access to the compo-
nents within the firebox, and the appliance
may only be operated without the front glass
enclosure panel in place for very brief periods
of time during initial appliance checkout and
adjustment.
4. Swing the bottom of the door out and raise
itslightlytoliftthetopflangeofthedoorframe
away from the appliance.
Maintenance
The appliance and venting system should be
thoroughly inspected before initial use and at
least annually by a qualified service techni-
cian.However,morefrequentperiodicinspec-
tions and cleanings should be performed by
the homeowner. Homeowner must contact a
qualified service technician at once if any
abnormal condition is observed.
Top Flange
Door Frame
Glass Door
Refer to the maintenance schedule for mainte-
nancetasks,procedures,periodicityandbywhom
they should be performed. Always verify proper
operation of the appliance after servicing.
During this appliance checkout and adjust-
ment period, a potential safety hazard exists
- EXERCISE EXTREME CAUTION to prevent
the occurrence of any burn injuries from the
exposed flames or hot surfaces.
IMPORTANT: TURN OFF GAS AND ANY
ELECTRICAL POWER BEFORE SERVICING
THE APPLIANCE.
Latch
Also note, that while the front glass enclosure
panel is removed, the flame appearance will
appear to be smaller than normal.
Glass Cleaning
Bottom Vee-flange
It will be necessary to clean the glass periodi-
cally. During start-up it is normal for conden-
sation to form on the inside of the glass. This
can cause lint, dust and other airborne par-
ticles to cling to the glass surface. Also initial
paint curing may deposit a slight film on the
glass. It is therefore recommended that the
glassbecleanedtwoorthreetimeswithanon-
ammonia household cleaner and warm water
(agasfireplaceglasscleanerisrecommended).
After that the glass should be cleaned two or
three times during each heating season, de-
pending on the circumstances present.
WARNING: HANDLE THE GLASS
WITH EXTREME CARE! DO NOT
STRIKE DOOR. TEMPERED GLASS
IS SUSCEPTIBLE TO DAMAGE
(SCRATCHES, FOR EXAMPLE) –
HANDLE GLASS DOOR (GLASS EN-
CLOSURE PANEL) GENTLY WHILE
REINSTALLING IT.
Latch
Door Frame
Firebox Floor
Figure 5
To install the front glass enclosure panel,
proceed as follows:
1. Retrieve the glass door frame. Visually
inspect the gasket on the backside of the
panel. The gasket surface must be clean, free
of irregularities and seated firmly.
WARNING: NO NOT ATTEMPT TO SUB-
STITUTE THE MATERIALS USED ON
THIS DOOR, OR REPLACE CRACKED
OR BROKEN GLASS WITH ANY MATE-
RIALS OTHER THAN THOSE PROVIDED
BY THE APPLIANCE MANUFACTURER.
2. Position the door frame in front of the
firebox opening and engage the top flange
over the lip at the top of the firebox opening.
Note: Clean glass after first two weeks of
operation.
WARNING: DO NOT USE ABRASIVE
CLEANERS. NEVER CLEAN THE GLASS
WHEN IT IS HOT.
3. Swing the door down and back. Ensure the
gasket seats evenly as the door draws shut.
Engage the Vee-flange at the bottom of the
door with the latches and close the latches to
secure the door.
THE GLASS DOOR OF THIS APPLIANCE
MUST ONLY BE REPLACED AS A COM-
PLETE UNIT AS PROVIDED BY THE
MANUFACTURER. DO NOT ATTEMPT
TO REPLACE BROKEN, CRACKED OR
CHIPPED GLASS SEPARATELY.
CAUTION: DO NOT ATTEMPT TO TOUCH THE
FRONT ENCLOSURE GLASS WITH YOUR
HANDS WHILE THE FIREPLACE IS IN USE.
4. Reinstallthetoplouverassemblyorradiant
panel.
Front Glass Enclosure Panel, Removal
and Installation.
Burner Adjustments
See Figure 5 and remove the front glass
enclosure panel as follows:
The following paragraphs address burner ad-
justment concerns and procedures.
WARNING: NEVER OPERATE THE AP-
PLIANCE WITHOUT THE GLASS EN-
CLOSURE PANEL IN PLACE AND SE-
CURE. DO NOT OPERATE APPLIANCE
WITH THE FRONT GLASS PANEL
CRACKED, BROKEN OR MISSING. RE-
PLACEMENT PANELS ARE AVAILABLE
THROUGH YOUR LOCAL LENNOX
DEALERANDMUSTBEINSTALLEDBYA
LICENSED OR QUALIFIED SERVICE
TECHNICIAN.
1. Remove the top louver assembly or radiant
panel.
Flame Appearance and Sooting
Proper flame appearance is a matter of taste.
Generally most people prefer the warm glow of
a yellow to orange flame. Appliances operated
with air shutter openings that are too large will
exhibit flames that are blue and transparent.
These weak, blue and transparent flames are
termed anemic. If the air shutter opening is too
small sooting may develop.
2. Open the hinged drop-down control com-
partment access panel.
3. Locate the two (2) latches at the top of the
controlcompartmentanddisengagethemfrom
the floor frame bottom Vee-flange, pulling
down on their handles to open them.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
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Sooting is indicated by black puffs developing
at the tips of very long orange flames. Sooting
results in black deposits forming on the logs,
appliance inside surfaces and on exterior sur-
faces adjacent to the vent termination.
Propane models may exhibit a flame pattern
that may candle or appear stringy. If this is
problematic or persists as the appliance is
continually operated, adjust the air shutter
closed as described in the previous para-
graphs. Operate the appliance for a period of
timeastheeffectdiminishes,ensuringthatthe
appliance does not develop sooty flames.
WARNING: THIS APPLIANCE IS NOT
MEANT TO BURN WOOD. ANY AT-
TEMPT TO DO SO COULD CAUSE IR-
REPARABLE DAMAGE TO YOUR AP-
PLIANCE AND PROVE HAZARDOUS TO
YOUR SAFETY.
Sooting is caused by incomplete combustion in
the flames and a lack of combustion air entering
the air shutter opening. To achieve a warm
yellow to orange flame with an orange body that
does not soot, the shutter opening must be
adjustedbetweenthesetwoextremes. Nosmoke
or soot should be present. Reposition the logs if
the flames impinge on any of them.
When satisfied that the appliance operates
properly, proceed to finish the installation.
Leave the control knob in “ON” position and
turn the remote switch “OFF.” Close the lower
control compartment door.
WARNING: THESIZEANDPOSITIONON
THE LOG SET WAS ENGINEERED TO
GIVE YOUR APPLIANCE A SAFE, RELI-
ABLE AND ATTRACTIVE FLAME PAT-
TERN. ANY ATTEMPT TO USE A DIF-
FERENT LOG SET IN THE FIREPLACE
WILL VOID THE WARRANTY AND WILL
RESULTININCOMPLETECOMBUSTION,
SOOTING, ANDPOORFLAMEQUALITY.
If the logs are properly positioned and sooting
conditions exist, the air shutter opening on the
main burner tube should be adjusted. Normally,
the more offsets in the vent system, the greater
the need for the air shutter to be opened further.
Adjusting
Set Screw
Adjustment Rod
Up (Fully Open
Position)
Venturi
Glowing Embers (Rockwool) Placement
WARNING: AIR SHUTTER ADJUST-
MENT SHOULD ONLY BE PERFORMED
BY A QUALIFIED PROFESSIONAL SER-
VICE TECHNICIAN.
Refer to the detailed glowing embers place-
ment instructions provided in the LOG PLACE-
MENT GUIDE accompanying this document.
Air Shutter
Adjustment Rod Down
(minimum air
opening position)
Vermiculite and Decorative Volcanic Stone
Placement
ENSURE THAT THE FRONT GLASS PANEL IS IN
PLACE AND SEALED DURING ADJUSTMENT.
FACTORY AIR
SHUTTER
SETTING
inches (mm)
1/32 (O.8)
3/16 (4.76)
1/32 (O.8)
3/16 (4.76)
1/32 (O.8)
3/16 (4.76)
Refer to the detailed vermiculite and decora-
tivevolcanicstoneplacementinstructionspro-
vided in the LOG PLACEMENT GUIDE accom-
panying this document.
Gas
Type
Adjustment
Models
CAUTION: THE ADJUSTMENT ROD AND
NEARBY APPLIANCE SURFACES ARE HOT.
EXERCISECAUTIONTOAVOIDINJURYWHILE
ADJUSTING FLAME APPEARANCE.
Nat.
Prop.
Nat.
Prop.
Nat.
MPDT-3328
MPDR-3328
MPD-3530
MPD-4035
MPD-4540
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.
To adjust the flame, move the adjustment rod
(located in the lower control area) up or down
to increase or reduce the air shutter opening,
respectively.Initially, always position the air
shutter to the factory setting (the minimum
air opening position) as shown in Figure 6.
This can be done by pulling the adjustment
rod all the way down. Allow the burner to
operate for at least 15 minutes. Observe the
flamecontinuously.Ifitappearsweakorsooty
as previously described, adjust the air shutter
by pushing or pulling on the adjustment rod
until the flame appearance is as desired.
Prop.
Nat.
1/8 (3.2)
1/2 (13)
1/8 (3.2)
1/2 (13)
Prop.
Nat.
Prop.
The top ³⁄₈" (10 mm) at the pilot generator
(thermopile) and the top ¹⁄₈" min (tip) of the
quick drop out thermocouple should be en-
gulfed in the pilot flame. The flame should
project1"(25mm)beyondthehoodatallthree
ports (see Figure 10 - SIT, and Figure 11 -
Honeywell, on page 8 ).
Figure 6
Log Placement
To light the burner, refer to the lighting in-
structions on pages 12 and 13.
WARNING: LOGS GET VERY HOT AND
WILL REMAIN HOT UP TO ONE HOUR
AFTER GAS SUPPLY IS TURNED OFF.
HANDLEONLYWHENLOGSARECOOL.
TURN OFF ALL ELECTRICITY TO THE
APPLIANCE BEFORE YOU INSTALL
GRATE AND LOGS.
The adjustment rod and associated adjustable
air shutter is patented technology. Flame ad-
justments can be made quickly and accurately
to taste without the need of disassembling the
appliance and waiting for 30 minutes after
each adjustment.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
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Carefully position the ceramic fiber logs and twigs over the burner as shown in Figures 7 (MPD-
3328), 8 (MPD-3530) or 9 (MPD-4035, MPD-4540). For more detailed placement instructions,
refer to the LOG PLACEMENT GUIDE accompanying this document.
SIT MILLIVOLT
Thermocouple
Hood
Ignitor Rod
Proper twig placement is critical to prevent sooting. Twigs should be placed in the gaps between
the flame peaks and should be positioned so that at no time they impinge the flames.
³⁄₈" Min
(9 mm)
Pilot
Nozzels
Thermopile
Figure 10
MILLIVOLT HONEYWELL
Thermocouple
Ignitor Rod
¹⁄₈" Min
(3 mm)
Hood
³⁄₈" Min
(9 mm)
Figure 7
MPD-3328 MODEL
Pilot
Nozzels
Thermopile
Figure 11
Electronic Appliance Checkout
To light the burner, refer to the lighting instruc-
tions on page 14 and 15. Ensure the ignitor
lightsthepilot.Thepilotflameshouldengulfthe
flame sensor as shown in Figure 12.
ELECTRONIC
3/8 To 1/2 Inch
(9 mm to 13 mm)
Proper Flame
Adjustment
Figure 8
MPD-3530 MODEL
Pilot
Nozzle
Ground
Electrode
Flame Rod
Hot Surface
Igniter
Figure 12
With proper care and maintenance, your ap-
pliance will provide many years of enjoy-
ment. If you should experience any problem,
first refer tothetroubleshootingguideinthis
manual. If problem persists, contact your
Lennox distributor.
Figure 9
MPD-4035 AND MPD-4540 MODEL
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
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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.
Electronic Wiring Diagram (Honeywell)
Showing the Blower Wiring for the Optional
FBK-250 Kits
SIT And Honeywell Millivolt Wiring Diagram
Electronic Wiring Diagram (Honeywell)
Showing the Blower Wiring for the Optional
FBK-100 and FBK-200 Kits
If any of the original wire as supplied must be replaced,
it must be replaced with Type AWM105°C – 18 GA. wire.
1. If any of the original wire as supplied must be replaced,
1. it must be replaced with Type AWM 105°C – 18 GA. wire.
2. 120V, 60Hz – Less than 3 amps.
1. If any of the original wire as supplied must be replaced,
1. it must be replaced with Type AWM 105°C – 18 GA. wire.
2. 120V, 60Hz – Less than 3 amps.
**Leave the ON/OFF switch, which is integral
**ON/OFF Switch (Integral
*Leave the ON/OFF switch, which is integral
with the gas valve, in the ON position.
*ON/OFF Switch (Integral
with Gas Valve)
with the gas valve, in the ON position.
with Gas Valve)
Gas Valve
PILOT
Gas Valve
PILOT
ASSEMBLY
ASSEMBLY
Ground - Green
Neutral - White
BK
120 VAC - Black
BK
Optional
R
Thermopile
FBK-250
R
Green
BL
White
Black
Ground - Green
Neutral - White
120 VAC - Black
Module
BL
Green
White
Black
OPT
BLOWER
Junction Box
OPT
BLOWER
A
B
Tab Intact
Junction Box
Ta b
Broken
Tab Intact
*OPTIONAL
Ta b
Broken
Red
Optional
Accessory
Switch
ON/OFF SWITCH,
Green
Ground
Screw
Hot
Neutral
Red
Side of
Side of
Optional
Accessory
Switch
WALL SWITCH, THERMOSTAT
OR REMOTE CONTROL RECEIVER
Green
Ground
Screw
Receptacle
Receptacle
Hot
Neutral
Side of
Receptacle
Side of
W
Receptacle
Transf.
120 V.
B
W
B
G
*TWIST WIRES “A” AND “B” TOGETHER TO OPERATE UNIT
SOLELY BY MANIPULATING THE GAS VALVE CONTROL KNOB;
OR CONNECT WIRES TO OPTIONAL ON/OFF SWITCH OR WALL
SWITCH OR THERMOSTAT TO OPERATE UNIT.
Transf.
120 V.
G
24 V
BL
24 V
R
BL
W
BK
R
WH
BK
OPTIONAL APPLIANCE-MOUNTED ON/OFF SWITCH
OR OPTIONAL WALL SWITCH
OR OPTIONAL THERMOSTAT
OR OPTIONAL REMOTE RECEIVER
OPTIONAL APPLIANCE-MOUNTED ON/OFF SWITCH
OR OPTIONAL WALL SWITCH OR OPTIONAL THERMOSTAT
OR OPTIONAL REMOTE RECEIVER
*Blower speed control switch is provided in FBK200 blower kit.
Factory Wired
Field Wired
Factory Wired
Field Wired
Schematic Representation Only
Schematic Representation Only
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.
If you encounter any problems or have any
questions concerning the installation or appli-
cation of this system, please contact your dis-
tributor, or Lennox directly:
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.
LENNOX HEARTH PRODUCTS
6. The installation date of the appliance.
1110 West Taft Avenue
Orange, CA 92865
Retainthismanual. Fileitwithyourotherdocu-
ments for future reference.
PRODUCT REFERENCE INFORMATION
REPLACEMENT PARTS
We recommend that you record the following important information about your fireplace. Please
contactyourLennoxdealerforanyquestionsorconcerns. ForthenumberofyournearestLennox
dealer, please call 1-800-9-LENNOX
A complete parts list is found at the end of this
manual. Use only parts supplied from the
manufacturer.
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_________________________________________________
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:
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
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NOTES:
10
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ACCESSORY COMPONENTS
Forced Air Blower Kits
-Single Speed
-Variable Speed with wall-mountable switch
80L85
-Variable Speed with unit- or wall-mountable switch
80L86 FBK-250
80L84
FBK-100
FBK-200
Remote Control System (Standard) H0249
RCL
Remote Control System (Deluxe)
H0251
RCL-T
Deluxe Remote Control System
Standard Remote Control System
The Model RCL-T (Deluxe) Remote Control
System has all of the features of the standard
system along with an added easy to read LCD
screen which presents access to many en-
hancements, including; battery power level in-
dicator, timer, modeofoperation, thermostatic
display including room temperature in either
metric of English units, flame indicator and
clock. Fully programmable, the Model RCL-T
allows for command over nearly all operational
and temperature variables, using the hand held
remote control transmitter.
The Model RCL (Standard) Remote Control
System,featuresasimpleOn/Offcontrolfunc-
tion for the fireplace. This model includes a
hand-held transmitter, a remote receiver with
wall-mount coverplate and all hardware re-
quired to install the unit. The remote receiver
can be wall or hearth mounted.
Forced Air Kit
TheFBK-100blowerprovidesconstantvelocity
forced air circulation. The FBK-200 assembly
with variable speed, wall-mountable switch
provides variable speed forced air circulation.
The FBK-250 assembly with variable speed
wall- or unit-mountable switch, also provides
variable speed forced air circulation.
Rocker Switch Kit
80L41
FRS
Touch-Up Paint (Charcoal) Kit
Touch-Up Paint (Tan) Kit
90L74
98K67
TPK-C
TPK-T
Unit-Mountable Rocker Switch
Touch-Up Paint Kit
Thisrockerswitchkitcanbeinstalleddirectlyin
the gas valve mounting bracket (millivolt gas
valve equipped fireplaces) to provide On/Off
operation in lieu of a wall switch.
Repair of minor scratches and discoloration of
the appliance's painted surfaces may be ac-
complished with the use of these touch-up
paint kits.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
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ACCESSORY COMPONENTS CONTINUED
The kits attach to the glass enclosure panel
without the use of hardware. The decorative
arch kits can not be used in conjunction with
the screen panel kit.
Arch Door Kits
Catalog No.
Model No.
MPD-3530
Screen Panel Kits
Catalog No.
Model No.
Polished
Brass
MPD-3328
MPD-4035
MPD-4540
Model No.
MPD-3328
MPD-3530
MPD-4035
MPD-4540
Model No.
98L04
HG33
26M48
HG35M
26M49
HG40M
26M50
HG45M
98L05
ADK33CPB
26M43
ADK35CMPB
81L35
ADK40CPB
81L36
ADK45CPB
Finish
Brushed
Stainless
Finish
98L62
ADK33CBS
26M44
ADK35CMBS
98L69
ADK40CBS
98L70
ADK45CBS
These screen panels can be installed on the
glassenclosurepaneltopreventdirectcontact
with the hot glass surface. The screen panel
kits cannot be used in conjunction with either
of the arch door kits or door frame kits.
Arch Screen Panel Kits
Catalog No.
Model No.
Model No.
H3592
MPD-3328
DASPK33TI
H3593
DASPK35TI
MPD-3530
H3594
DASPK40TI
MPD-4035
These screen panel kits can be installed on the glass enclosure panel to prevent direct contact with
the hot glass surface. The panel kits add a new design choice with a handsome textured iron finish.
The screen panel kits cannot be used in conjunction with either of the arch door kits or door frame kits.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
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ACCESSORY COMPONENTS CONTINUED
2-Piece Louver Kits
Catalog No.
Hood Kits
Catalog No.
Model No.
Polished Brushed
Model
No.
Model No.
Model No.
Polished
Brass
98L09
Brushed
Stainless
98L08
Clean Face Panel Kits
Catalog No.
Brass
98L10
Stainless
98L11
MPD-
3328
MPD-
3530
MPD-
4035
MPD-
4540
Model No.
MPD-3328
MPD-3530
MPD-4035
MPD-4540
Model No.
2LVR33PB 2LVR33BS
96L05 96L09
2LVR35PB 2LVR35BS
96L06 96L10
2LVR40PB 2LVR40BS
96L07 96L11
2LVR45PB 2LVR45BS
EB33PB
96K67
EB33BS
88L49
26M47
RAD33MC
88L36
RAD35C-2
88L37
RAD40C-2
88L38
MPD-3328
MPD-3530
MPD-4035
MPD-4540
EB35PB
96K68
EB35BS
88L50
EB40PB
96K69
EB40BS
88L51
EB45PB
EB45BS
RAD45C-2
These louvers are designed to replace either the
middle charcoal louver of each louver set or the
charcoal louver in each set closest to the glass
enclosure panel.
Thesehoodkitsreplacethestandardhoodthat
comes with these fireplaces.
Clean faced panel kits are available to convert
thestandardlouveredfireplacestoradiantmod-
els which are more suited for finishing around
the firebox opening with non-combustible ma-
terials, such as tile.
Assembled Louver Kits
Catalog No.
4-Piece Door Frame Kits
Catalog No.
2-Piece Door Frame Kits
Catalog No.
Model
No.
Model No.
Model
No.
Model No.
Model
No.
Model No.
Polished
Brushed
Stainless
24M46
Polished
Brushed
Stainless
98L19
Polished
Brushed
Stainless
98L23
Brass
24M45
Brass
98L18
Brass
98L22
MPD-
3328
MPD-
3530
MPD-
4035
MPD-
4540
MPD-
3328
MPD-
3530
MPD-
4035
MPD-
4540
MPD-
3328
MPD-
3530
MPD-
4035
MPD-
4540
LVR33MPB LVR33MBS
2DFK33PB
26M88
2DFK33BS
26M91
4DFK33PB
26M82
4DFK33BS
26M85
88L28
LVR35PB-2
88L29
88L32
LVR35BS
88L33
2DFK35PB
26M89
2DFK35BS
26M92
4DFK35PB
26M83
4DFK35BS
26M86
LVR40PB-2
88L30
LVR40BS
88L34
2DFK40PB
26M90
2DFK40BS
26M93
4DFK40PB
26M84
4DFK40BS
26M87
LVR45PB-2
LVR45BS
2DFK45PB
2DFK45BS
4DFK45PB
4DFK45BS
These louvers are designed to replace the
standard radiant panels that are provided with
the fireplace, or they may be used to replace
the charcoal colored louvers also available
with this fireplace. They include a top 3-piece
assembly and a bottom 3-piece assembly.
These kits are designed to attach directly to
the front face of the appliance at the glass
enclosure panel's top and bottom edges.
Thesekitsaredesignedtoattachdirectlytothe
front face of the fireplace at the four edges of
the glass enclosure panel.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
13
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ACCESSORY COMPONENTS CONTINUED
Style View Doors -
Style View Doors come in 4 beautiful styles. They are easy to install and will not require hardware to attach them to the standard
glass door frame. The door includes heavy duty magnet door latches and functional twin-pane doors.
Arch Design
Square Design
Arch Pane Design
Square Pane Design
SQUARE DESIGN KITS
35” Sq. Doors, Charcoal
ARCH DESIGN KITS
Description
H0946
H0947
H0948
H0949
H0950
H0951
H0952
H0953
H0954
H0955
H0956
H0957
SD35C
SD35TI
SD35SP
SD35AB
SD40C
SD40TI
SD40SP
SD40AB
SD45C
SD45TI
SD45SP
SD45AB
Cat. No.
H0858
H0859
H0860
H0861
H0862
H0863
H0864
H0865
H0866
H0867
H0868
H0869
Model
AD35C
AD35TI
AD35SP
AD35AB
AD40C
AD40TI
AD40SP
AD40AB
AD45C
AD45TI
AD45SP
AD45AB
Model Series
MPD3530
35” Sq. Doors, Textured Iron
35” Sq. Doors, Satin Pewter
35” Sq. Doors, Antique Brass
40” Sq. Doors, Charcoal
35” Arch Doors, Charcoal
MPD3530
35” Arch Doors, Textured Iron
35” Arch Doors, Satin Pewter
35” Arch Doors, Antique Brass
40” Arch Doors, Charcoal
40” Sq. Doors, Textured Iron
40” Sq. Doors, Satin Pewter
40” Sq. Doors, Antique Brass
45” Sq. Doors, Charcoal
MPD-4035
MPD4540
40” Arch Doors, Textured Iron
40” Arch Doors, Satin Pewter
40” Arch Doors, Antique Brass
45” Arch Doors, Charcoal
MPD4035
MPD4540
45” Sq. Doors, Textured Iron
45” Sq. Doors, Satin Pewter
45” Sq. Doors, Antique Brass
SQUARE PANE DESIGN KITS
35” Sq. Pane Doors, Charcoal
35” Sq. Pane Doors, Textured Iron
35” Sq. Pane Doors, Satin Pewter
35” Sq. Pane Doors, Antique Brass
40” Sq. Pane Doors, Charcoal
40” Sq. Pane Doors, Textured Iron
40” Sq. Pane Doors, Satin Pewter
40” Sq. Pane Doors, Antique Brass
45” Sq. Pane Doors, Charcoal
45” Sq. Pane Doors, Textured Iron
45” Sq. Pane Doors, Satin Pewter
45” Sq. Pane Doors, Antique Brass
45” Arch Doors, Textured Iron
45” Arch Doors, Satin Pewter
45” Arch Doors, Antique Brass
ARCH PANE DESIGN KITS
35” Arch Pane Doors, Charcoal
35” Arch Pane Doors, Textured Iron
35” Arch Pane Doors, Satin Pewter
H0962
H0963
H0964
H0965
H0966
H0967
H0968
H0969
H0970
H0971
H0972
H0973
SPD35C
SPD35TI
SPD35SP
SPD35AB
SPD40C
SPD40TI
SPD40SP
SPD40AB
SPD45C
SPD45TI
SPD45SP
SPD45AB
H0930
H0931
H0932
H0933
H0934
H0935
H0936
H0937
H0938
H0939
H0940
H0941
APD35C
APD35TI
APD35SP
MPD3530
MPD3530
MPD4035
APD35AB 35” Arch Pane Doors, Antique Brass
APD40C
APD40TI
APD40SP
40” Arch Pane Doors, Charcoal
40” Arch Pane Doors, Textured Iron
40” Arch Pane Doors, Satin Pewter
MPD-4035
MPD4540
APD40AB 40” Arch Pane Doors, Antique Brass
APD45C
APD45TI
APD45SP
45” Arch Pane Doors, Charcoal
45” Arch Pane Doors, Textured Iron
45” Arch Pane Doors, Satin Pewter
MPD4540
APD45AB 45” Arch Pane Doors, Antique Brass
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
14
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ACCESSORY COMPONENTS CONTINUED
Style View Doors Continued -
Style View Doors also come in a Tall Arch Pane Design. Two distinctive grille kits, the “Crescents” and “Sunrise” design, are
also offered seperately. They are easy to install and will not require hardware to attach them to the standard glass door
frame. The door includes heavy duty magnet door latches and functional twin-pane doors.
TALL ARCH PANE DOORS
Cat. No.
H3525
H3527
H3529
H3531
H3533
H3535
Model
Description
Model Series
MPD3530
TAPD35C 35” Arch Pane Doors, Charcoal
TAPD35SP
TAPD40C
TAPD40SP
35” Arch Pane Doors, Satin Pewter
40” Arch Pane Doors, Charcoal
40” Arch Pane Doors, Satin Pewter
45” Arch Pane Doors, Charcoal
45” Arch Pane Doors, Satin Pewter
Tall Arch Pane Door
MPD4035
MPD4540
TAPD45C
TAPD45SP
“Sunrise” Grille Kits
“Crescents” Grille Kits
“ Crescents” Grille Kits
“ Sunrise” Grille Kits
Cat. No.
Model
Description
Model Series
MPD3530
Cat. No.
Model
Description
Model Series
MPD3530
H3541 CUGK35C
35” Crescents Upper Grille Kit, Charcoal
H3565 SUGK35C
35” Sunrise Upper Grille Kit, Charcoal
CUGK35SP 35” Crescents Upper Grille Kit, Satin Pewter
SUGK35SP 35” Sunrise Upper Grille Kit, Satin Pewter
H3543
H3567
H3545 CLGK35C
35” Crescents Lower Grille Kit, Charcoal
H3569 SLGK35C
35” Sunrise Lower Grille Kit, Charcoal
H3547
CLGK35SP 35” Crescents Lower Grille Kit, Satin Pewter
H3571
SLGK35SP 35” Sunrise Lower Grille Kit, Satin Pewter
H3549 CUGK40C
40” Crescents Upper Grille Kit, Charcoal
H3573 SUGK40C
40” Sunrise Upper Grille Kit, Charcoal
SUGK40SP 40” Sunrise Upper Grille Kit, Satin Pewter
CUGK40SP 40” Crescents Upper Grille Kit, Satin Pewter
H3575
H3577 SLGK40C
H3551
H3553 CLGK40C
MPD4035
MPD4540
MPD4035
MPD4540
40” Sunrise Lower Grille Kit, Charcoal
40” Crescents Lower Grille Kit, Charcoal
H3579
SLGK40SP 40” Sunrise Lower Grille Kit, Satin Pewter
H3555
CLGK40SP 40” Crescents Lower Grille Kit, Satin Pewter
H3581 SUGK45C
45” Sunrise Upper Grille Kit, Charcoal
H3557 CUGK45C
45” Crescents Upper Grille Kit, Charcoal
SUGK45SP 45” Sunrise Upper Grille Kit, Satin Pewter
H3583
H3585 SLGK45C
CUGK45SP 45” Crescents Upper Grille Kit, Satin Pewter
H3559
H3561 CLGK45C
45” Sunrise Lower Grille Kit, Charcoal
45” Crescents Lower Grille Kit, Charcoal
H3587
SLGK45SP 45” Sunrise Lower Grille Kit, Satin Pewter
H3563
CLGK45SP 45” Crescents Lower Grille Kit, Satin Pewter
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
15
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LIGHTING INSTRUCTIONS – HONEYWELL AND SIT MILLIVOLT GAS VALVE
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING: IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION MAY
RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.
A. This appliance has a pilot which must be lighted with a piezo
ignitor. When lighting the pilot, follow these instructions
exactly.
• 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.
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.
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.
WHAT TO DO IF YOU SMELL GAS
• Extinguish any open flame.
• Open windows.
• Do not light any appliance.
• Do not touch any electrical switches.
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.
LIGHTING INSTRUCTIONS
1. STOP! Read the safety information above on this page.
2. Access the lower control compartment.
3. Turn remote wall switch to “OFF.”
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.”
4. Verify main line shut-off valve is open.
HONEYWELL
MILLIVOLT PILOT
8. Push in control knob all the way and hold in.
5. Push in gas control knob slightly and turn clockwise
Immediately light the pilot by triggering the
to “OFF.”
spark ignitor (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.
HONEYWELL
MILLIVOLT
GAS VALVE
T
F
F
O
O
L
I
P
H
I
O
L
N
• If knob does not pop up when released,
PIEZO IGNITOR
O U T
SIT
I N
stop and immediately call your service
technician or gas supplier.
MILLIVOLT PILOT
I
H
SIT
F
F
O
P
I
L
MILLIVOLT
GAS VALVE
O
• If pilot will not stay lit after several tries,
turn the control knob to “OFF” and call
your service technician or gas supplier.
L
W
T
O
P
I
L
T O
PIEZO IGNITOR
9. Turn gas control knob counterclockwise
to “ON.”
Note: Knob cannot be turned from “PILOT” to “OFF”
unless the knob is pushed in slightly. Do not force.
10. Close lower control compartment.
TO TURN OFF GAS TO APPLIANCE
1. Turn remote wall switch “OFF.” The pilot will remain lit for
4. Depress gas control knob slightly and turn clockwise
normal service.
to “OFF.” Do not force.
2. For complete shutdown, turn remote wall switch to “OFF.”
5. Close lower control compartment.
3. Access the lower control compartment.
16
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INSTRUCTIONS D’ALLUMAGE – VANNE GAZ MILLIVOLT HONEYWELL ET SIT
POUR VOTRE SÉCURITÉ, LISEZ CES INSTRUCTIONS AVANT L’ALLUMAGE
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.
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. AVANT L’ALLUMAGE: Assurez-vous que vous ne détectez aucune
odeurdegazautourdel’apareilainsiqueprèsdusol;certainsgaz,étant
plus lourds que l’air, descendent au niveau du sol.
VOICI CE QUE VOUS DEVEZ FAIRE SI VOUS DÉCELEZ UNE ODEUR
DE GAZ:
•
•
Appelezimmédiatementvotrecompagniedegazenutilisantletéléphone
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.
•
•
•
•
•
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.
INSTRUCTIONS D'ALLUMAGE
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.
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
pendant environ 90 secondes après l’allumage de la veilleuse.
Relâchez le bouton et il sortira
5. Enfoncez légèrement le bouton de réglage du gaz et tournez-le dans
le sens des aiguilles d’une montre
d’arrêt “OFF”.
jusqu’à la position
subitement. La veilleuse devrait rester
HONEYWELL
allumée. Si elle s’éteint, répétez les
MILLIVOLT PILOT
étapes 5 à 8 inclusivement.
• Si le bouton ne sort pas
VANNE GAZ
MILLIVOLT
HONEYWELL
T
F
F
O
O
L
I
P
automatiquement après avoir été
relâché, arrêtez immédiatement et
téléphonez à votre technicien de
service ou à votre fournisseur de gaz.
H
I
O
L
N
PIEZO-ELECTRIQUE
• Si la veilleuse refuse de rester allumée
I N
O U T
SIT
après plusieurs tentatives, tournez le
MILLIVOLT PILOT
I
H
bouton de réglage jusqu’à sa position
d’arrêt “OFF” et téléphonez à votre
technicien de service ou à votre
fournisseur de gaz.
VANNE GAZ
MILLIVOLT SIT
F
F
O
P
I
L
O
L
O
W
T
O
N
P
I
L
O
T
9. Tournez le bouton de réglage du gaz en
PIEZO-ELECTRIQUE
sens inverse des aiguilles d’une
montre
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.
jusqu’à sa position
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 consignes
de sécurité au verso de cette plaque. Si vous ne remarquez aucune
odeur de gaz, passez à l’étape suivante.
12. Si l’appareil ne fonctionne pas, suivre les instructions intitulées
“Pour fermer le gaz qui alimente l’appareil” et appeler un
technicien ou le fournisseur de gaz.
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
veilleuse
“PILOT”.
POUR FERMER LE GAZ QUI ALIMENTE L’APPAREIL
1. Tournez l’interrupteur mural à la position d’arrêt “OFF”. La veilleuse
4. Enfoncez légèrement le bouton de réglage du gaz et tournez-le dans
restera allumée jusqu’au retour du service normal.
le sens des aiguilles d’une montre
jusqu’à la position
d’arrêt “OFF”. Ne forcez pas le bouton.
2. Pour une fermeture complète, tournez l’interrupteur mural à la
position d’arrêt “OFF”.
5. Fermez le compartiment de contrôle du bas.
3. Ouvrez le compartiment de contrôle du bas.
17
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LIGHTING INSTRUCTIONS — ELECTRONIC
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING: IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION MAY
RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.
A. When lighting the appliance, follow these instructions
• Immediately call your gas supplier from a neighbor’s
exactly.
phone.
• If your gas supplier cannot be reached, call the fire
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.
department.
C. Use only your hand to turn the gas control lever. Never
use tools. If the lever will not 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.
WHAT TO DO IF YOU SMELL GAS
• Extinguish any open flame.
• Open windows.
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.
• Do not light any appliance.
• Do not touch any electrical switches.
• Do not use any phone in your building.
LIGHTING INSTRUCTIONS
1. STOP! Read the safety information above on this page.
2. Turn remote wall switch to “OFF.”
5. Turn the ON/OFF switch to “OFF”. Do not force.
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.
3. Open lower control compartment door.
4. Verify main line shut-off valve is open.
7. Turn the ON/OFF switch to “ON”. Do not force.
ON/OFF Switch
8. Turn “ON” all electrical power to appliance (remote wall
switch).
9. Close lower control compartment door.
TO SHUT OFF
1. Turn off all electrical power to the appliance (remote wall
Front View
switch).
TO TURN OFF GAS TO APPLIANCE
1. For complete shut-down, turn remote wall switch to
3. Turn the ON/OFF switch to “OFF”. Do not force.
4. Close the main line shut-off valve.
“OFF.”
2. Open lower control compartment door.
5. Close lower control compartment door.
18
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INSTRUCTIONS D’ALLUMAGE — ELECTRONIC
POUR VOTRE SÉCURITÉ, LISEZ CES INSTRUCTIONS AVANT L’ALLUMAGE
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.
A. Lorsquevousallumezl’appareil,suivezexactementcesinstruc-
• Appelezimmédiatementvotrecompagniedegazenutilisant
tions.
le téléphone du voisin.
• S’il vous est impossible de contacter votre compagnie de
B. AVANT L’ALLUMAGE: Assurez-vous que vous ne détectez
aucune odeur de gaz autour de l’apareil ainsi que près du sol;
certainsgaz,étantpluslourdsquel’air,descendentauniveaudu
sol.
gaz, appelez le service des incendies.
C. N’utilisez que votre main pour manipuler linterrupteur “ON/
OFF” de la valve à gaz. N’utilisez jamais d’outils. Si
l’interrupteur ne bouge pas manuellement, n’essayez pas de le
réparer. Communiquez immèdiatement avec un technicien de
service qualifié. Toute tentative pour forcer l’interrupteur ou le
réparer, risquerait de provoquer un incendie ou une explosion.
VOICI CE QUE VOUS DEVEZ FAIRE SI VOUS DÉCELEZ UNE
ODEUR DE GAZ
• Éteignez toute flamme visible.
• Ouvrez les fenêtres.
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
piècedusystèmederéglageoucommandedugazquiaétésous
l’eau.
• N’allumez aucun appareil.
• Ne touchez à aucun commutateur électrique.
• Ne vous servez d’aucun téléphone dans votre édifice.
INSTRUCTIONS D’ALLUMAGE
6. Attendez cinq (5) minutes pour l’evacuation du gaz. Si vous
décelez une odeur de gaz ARRÊTEZ ! Retournez au point “B” des
consignes de sécurité au verso de cette plaque. Si vous ne
remarquez aucune odeur de gaz, passez à l’étape suivante.
1. ARRÊTEZ ! Lisez les consignes de sécurité au verso de cette
plaque.
2. Tournez l’interrupteur mural à la position d’arrêt “OFF”.
7. Tournezlamanettederéglagedugazjusqu’àlapositiondemarche
3. Ouvrez la porte du compartiment de contrôle du bas.
“ON”. Ne la forcez pas.
4. Assurez-vousquelasoupaped’arrêtdelacanalisationprincipale
8. Ouvrez le courant électrique (“ON”) qui alimente l’appareil
est ouverte.
(interrupteur mural).
9. Fermez la porte du compartiment de contrôle du bas.
5. Tournezlamanettederéglagedugazàlapositiond’arrêt“OFF”.
10. Au besoin, rebrancher l’apareil au courant électrique et
remettre l’interrupteur principal du brûleur à la position “ON”
ou régler le thermostat à la température désirée.
Interrupteur
ON/OFF
11. Si l’appareil ne se met pas en marche, suivre les instructions
intitulées “Pour fermer le gaz qui alimente l’appareil” et appeler
un technicien ou le fournisseur de gaz.
POUR ÉTEINDRE L’APPAREIL
1. Coupeztoutlecourantélectriquequialimentel’appareil(interrupteur
Vue de face
mural).
POUR FERMER LE GAZ QUI ALIMENTE L’APPAREIL
1. Pour une fermeture complète, tournez l’interrupteur mural à la
3. Tournezlamanettederéglagedugazàlapositiond’arrêt“OFF”.
position d’arrêt “OFF”.
Ne la forcez pas.
2. Ouvrez la porte du compartiment de contrôle du bas.
4. Fermez la soupape d’arrêt de la canalisation principale.
5. Fermez la porte du compartiment de contrôle du bas.
19
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TROUBLESHOOTING THE MILLIVOLT GAS CONTROL SYSTEM
Note: Before troubleshooting the gas control system, be sure external gas shut off valve (located at gas supply inlet) is in
the “ON” position.
Important: Valve system troubleshooting should only be accomplished by a qualified service technician.
POSSIBLE CAUSES
SYMPTOM
CORRECTIVE ACTION
A. Defective ignitor
1. Spark ignitor will not light
pilot after repeated
Check for spark at electrode and pilot; if no spark and
electrode wire is properly connected, replace ignitor.
(no spark at electrode).
triggering of ignitor button.
Using a match, light pilot. If pilot lights, turn off pilot and
trigger the ignitor button again. If pilot lights, an improper gas
mixture caused the bad lighting and a longer purge period is
recommended. If pilot will not light – check gap at electrode
and pilot – should be ¹⁄₈" to have a strong spark. If gap
measures¹⁄₈",replacepilot(Figure10,page8-SITandFigure
11, page 8 - Honeywell).
B. Defective or misaligned electrode
at pilot (spark at electrode).
Check inlet gas pressure. It should be within the limits as
marked on the rating plate.
C. Gas supply pressure errant.
Clean or replace pilot orifice.
D. Pilot orifice plugged.
A. Defective pilot generator
(thermocouple).
Check pilot flame, it must impinge on thermocouple
(Figure 10, page 8 - SIT and Figure 11, page 8 - Honeywell).
Clean and/or adjust pilot for maximum flame impinge-
ment on thermocouple. Ensure that the connection be-
tween the valve and thermocouple are tight and secure.
2. Pilot will not stay lit after
carefully following the
lighting instructions.
A. Wall switch or wires defective.
Check wall switch and wires for proper connections. Jumper
wire across terminals at wall switch, if burner comes on,
replacedefectivewallswitch.Ifokay,jumperwiresacrosswall
switch wires at valve, if burner comes on, wires are faulty or
connections are bad.
3. Pilot burning, no gas to
burner, Valve knob “ON,”
Wall Switch “ON.”
B. Thermopile may not be generating
Checkthermopilewithmillivoltmeter.Takereadingatthermo-
pile terminals of gas valve. Should read 325 millivolts mini-
mum with optional wall switch “OFF.” Replace faulty thermo-
pile if reading is below specified minimum.
sufficient millivoltage.
C. Plugged burner orifice.
Check burner orifice for stoppage and remove.
A. Pilot flame may be too low or
blowing (high) causing the pilot/
valve safety to drop out.
Clean and/or adjust pilot flame for maximum flame im-
pingement on thermocouple (Figure 10, page 8 - SIT and
Figure 11, page 8 - Honeywell).
4. Frequent pilot/burner outage
problem.
20
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TROUBLESHOOTING THE ELECTRONIC IGNITION SYSTEM
Note: Before troubleshooting, be sure that the appliance main line gas shut-off valve, the gas control valve and the wall switch are in
the “ON” position.
Important: Valve system troubleshooting should only be accomplished by a qualified service technician.
SYMPTOM
POSSIBLE CAUSES
CORRECTIVE ACTION
1. Burner will not light.
A. Faulty Valve System.
See Below.
B. “OFF/ON” or wall switch
Disconnect the two black wires from the wire nuts. Test switch(s) for
continuity with a multimeter. If continuity is not indicated, switch(s) is
defective and must be replaced.
defective.
Note: Before replacing “OFF/ON” switch, be sure to check wiring for loose
connections or broken wires and repair as needed.
2. Burners come “ON” but
A. Burner orifice plugged.
Check main burner orifice(s) for stoppage. Clean or replace.
Check vent system for obstructions.
go “OFF.”
B. Obstructed vent system.
START
CHECK
• Check For Proper Voltage At Control Harness
(See Insert A). Voltage Should Be 24V
Between Thermostat Or Pressure Switch
• Turn Off Gas Supply
• Line Voltage Power
• Low Voltage Transformer
• Limit Controller
• Thermostat
NO
• Assure Valve Switch Is In ON Position
• Disconnect Control Harness
• Set Thermostat To Call For Heat
And 24V Common And 24V Hot.
2
• Wiring
YES
• Plug Control Harness Into Valve. Wait For
Internal Check Delay.
• With Pilot Burner Cable Connected, Measure
Voltage At Valve HSI Element Output. 24V
Nominal. (See Insert B)
NO
NO
• Igniter Warms Up And Glows Red.
• Replace Valve.
Insert A
End View Of
Control Harness
Connector
1
2
24 Volt Hot
YES
24 Volt
Common
1
YES
• Replace Igniter/Flame Rod Assembly.
YES
24 Volt
Switched
NO
NO
• Check That Pilot Gas Is Flowing. Wait To
Assure Plot Gas Tubing Is Purged. Recycle
Call For Heat If Necessary.
• Replace Valve.
• Turn On Gas Supply. • Pilot Burner Lights.
Check For Damaged Or Missing Terminals
In Connector
YES
• Measure Voltage Between 24V Hot And 24V Common
Leads To Valve Control. Must Measure At Least 19.5
VAC With Igniter Powered (See Insert A). To Identify
Proper Lead, This Check Must Be Done With The
Valve Control Connected And Igniter Powered.
NO
• Check Transformer And
Line Volt Supply.
Insert B
YES
Igniter Terminals
YES
• Replace Pilot Assembly.
• Check That Pilot Flame Makes Good Contact With
Pilot Burner Flame Rod.
NO
• Check For Good Electrical Connection Through The
Pilot Tubing.
• Main Valve Opens And Main Burner Lights.
• If Both Of The Above Are Good, Replace Igniter/Flame
Rod Assembly.
YES
YES
• Cycle Thermostat Off And Back On.
• System Is Okay.
Igniter Will Cycle Off And Back On Once During
When Measured Voltage At Connections, Use
Care To Assure Terminals Are Not Damaged.
NO
1
2
• Main Burner Lights.
• Replace Valve.
The 90 Second Ignition Trial. All Voltage
Measurements Must Be Taken While The Igniter
Is Powered.
21
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REPLACEMENT PARTS LIST
MPDT-3328
MPD-3530
MPDR-3328
MPD-4035
MPD-4540
No.
DESCRIPTION
Part No.
–
Qty.
–
Part No.
–
Qty.
–
Part No.
–
Qty.
–
Part No.
–
Qty.
–
Gas Fireplace Assembly
Hood
1.
2.
H4574
1
97K51
1
97K52
1
97K53
1
Louver Assembly, Upper
Louver Assembly, Lower
Enclosure, Glass Front (Complete)
Nameplate (Brand)
H4577
H4578
H4575
12L51
69L21
69L31
24M15
24M58
H4583
39L66
99K78
88L53
80L42
H3696
93L32
5
1
1
1
2
2
1
1
1
1
1
1
1
1
1
K3726
H3734
H4864
12L51
69L21
69L31
24M22
24M58
H4583
60J80
19L52
88L53
80L42
H3696
93L32
5
1
1
1
2
2
1
1
1
1
1
1
1
1
1
H3727
H3735
H3724
12L51
69L21
69L31
24M25
24M59
H4583
24M10
21L01
88L53
80L42
H3696
93L32
5
1
1
1
2
2
1
1
1
1
1
1
1
1
1
H3728
H3736
91L16
12L51
69L21
69L31
24M25
24M59
H4583
18L40
37G00
88L53
80L42
H3696
93L32
5
1
1
1
2
2
1
1
1
1
1
1
1
1
1
3.
4.
5.
6.
Latch
7.
Catch, Door, Magnetic
Log Set (Complete)
8.
9.
Burner Assembly
10.
11.
11.
12.
13.
14.
15.
Grate Assembly
Orifice, Main Burner - Nat. Gas
Orifice, Main Burner - LP Gas
Bag of Embers (Rockwool)
Bag of Decorative Volcanic Stone
Bag of Vermiculite
Gas Line Flexible Connector
GAS CONTROLS — SIT MILLIVOLT
Natural
Propane
Part No.
88J53
No.
DESCRIPTION
Part No.
H1657
10K86
69L17
60J79
74L57
74L56
74L58
H3737
Qty.
1
Qty.
1
20.
21.
22.
23.
24.
25.
26.
27.
Gas Valve - SIT
Piezo Igniter
1
10K86
1
Pilot Assembly
Pilot Generator
Thermocouple
Pilot Tube
1
69L18
1
1
60J79
1
1
74L57
1
1
74L56
1
Electrode And Cable
Pilot Shield
1
74L58
1
1
H3737
1
GAS CONTROLS — HONEYWELL MILLIVOLT
Natural
Propane
Part No.
No.
DESCRIPTION
Part No.
24M12
67L70
60J79
67L67
67L68
67L87
24M89
H3737
Qty.
1
Qty.
1
30.
31.
32.
33.
34.
35.
36.
37.
Gas Valve
82L87
67L70
60J79
67L67
67L68
67L87
24M89
H3737
Pilot Assembly
Pilot Generator
Thermocouple
Pilot Tube
1
1
1
1
1
1
1
1
Electrode And Cable
Piezo Igniter
Pilot Shield
1
1
1
1
1
1
GAS CONTROLS — HONEYWELL ELECTRONIC
Natural
Propane
No.
DESCRIPTION
Part No.
Qty.
1
Part No.
62L19
62L14
42J32
87L54
H1596
Qty.
1
40.
41.
42.
43.
44.
Gas Valve - Honeywell
Pilot Assembly
62L18
62L14
42J32
87L54
1
1
Transformer
1
1
Ignitor Assembly (Kit)
Pilot Shield
1
1
22
H1596
1
1
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REPLACEMENT PARTS
40/45
8
40/45
9
1
2
33/35
8
33/35
9
12
13
14
11
40/45
10
21
20
33/35
10
7
6
26
23
40
27
22
24
15
2
30
44
25
41
(REF)
5
3
36
35
43
37
32
33
4
42
31
34
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
23
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Lennox Hearth Products reserves the right to make changes at any time, without notice, in
design, materials, specifications, prices and also to discontinue colors, styles and products.
Consult your local distributor for fireplace code information.
Printed in U.S.A. © 2002 by Lennox Hearth Products
P/N 875,014M REV. K 03/2007
1110 West Taft Avenue • Orange, CA 92865
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