HOMEOWNER'S CARE AND
OPERATION INSTRUCTIONS
B-VENT SEE-THROUGH
MERIT® PLUS SERIES
B-VENT GAS FIREPLACES
P/N 875,024M REV. NC 04/2005
MODELS
Millivolt Models
Electronic Models
MPB35ST-NM
MPB35ST-PM
MPB35ST-NE
A French manual is available upon request. Order P/N 875,024CF
Ce manuel d’installation est disponible en francais, simplement en
faire la demande. Numéro de la pièce 875,024CF
WARNING: IFTHEINFORMATIONINTHISMANUAL
IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLO-
SIONMAYRESULTCAUSINGPROPERTYDAMAGE,
PERSONAL INJURY OR LOSS OF LIFE.
FOR YOUR SAFETY: Do not store or use gasoline
or other flammables or liquids in the vicinity of
this or any other appliance.
FOR YOUR SAFETY: What to do if you smell gas:
• 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. Follow your gas suppliers
instructions.
• If your gas supplier cannot be reached, call
the fire department.
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
Listing Agency
Installation and service must be performed by
a qualified installer, service agency or the gas
supplier.
OTL Report No. 116-F-27-5
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KEEP YOUR HOUSE WELL VENTILATED
DURING THE CURING PROCESS. THE ODOR
ANDHAZEEMITTEDBYTHECURINGPROCESS
CANBEQUITENOTICEABLEANDMAYSETOFF
A SMOKE DETECTOR.
Testgaugeconnectionsareprovidedonthefront
ofthemillivoltgascontrolvalve,identifiedINfor
theinletandOUTforthemanifoldside(seeFig-
urex2onPagex4). A1/8"NPTTestgaugecon-
nectionisprovidedattheinletandoutletsideof
the electronic gas control valve (see Figurex
3 on Pagex 5).
WARNING
Do not attempt to alter or modify
the construction of the appli-
ance or its components. Any
modification or alteration may
void the warranty, certification
and listings of this unit.
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 Glass Cleaning on Page 8.
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
system at test pressures equal to or less than
1/2 psig (3.5 kPa).
WARNING
SAFETY & WARNIING INFORMATION
Improper installation, adjust-
ment, alteration, service or
maintenance can cause injury
or property damage. Refer to
this manual. For assistance or
additional information consult
a qualified installer, service
agency or the gas supplier.
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).
WARNING
If the information in this
manual is not followed
exactly,a fireorexplosion
may result causing prop-
erty damage, personal
injury or loss of life.
Orifice Sizes - Sea Level to High Altitude
(All Models)
These appliances are tested and approved for
installationsatelevationsof0-4500feet(0-1372
meters)abovesealevelusingthestandardburner
orifice sizes (marked with an "*" in Table 6 ).
Forelevationsabove4500feet,theseappliances
must be properly "derated" by the gas supplier
or qualified service technician (usually done at
the time of installation).
WARNING
WARNING
These fireplaces are vented
heaters. Do not burn wood or
other material in these appli-
ances.
Failuretocomplywiththeinstal-
lationandoperatinginstructions
provided in this document will
result in an improperly installed
andoperatingappliance,voiding
its warranty. Any change to this
appliance and/or its operating
controlsisdangerous. Improper
installation or use of this appli-
ance can cause serious injury or
deathfromfire,burns,explosion
or carbon monoxide poisoning.
Note: Derated (definition) - Replacing burner
orifice with a smaller one to reduce BTU input.
Theinstallationofthisappliancemustbeaccord-
ing to the regulations of the local authorities
havingjurisdictionand,intheUSA,theNational
Fuel Gas Code NFPA 54 / ANSI Z223.1 - latest
edition or, in Canada, the CAN1-B149.1 and .2
codes - latest edition.
WARNING
This appliance is only for use
with the type of gas indicated on
the rating plate. This appliance
is not convertible for use with
other gases, unless a certified
kit is used.
Burner Orifice Sizes (all models)
Natural
Gas
Propane
Gas
Elevation
IMPORTANT
WARNING
Feet (meters)
drill size (inches) drill size (inches)
These appliances must not be
connected to a chimney or flue
serving a separate solid fuel
burning appliance.
0-4500
(0-1372)
#37 (.104")
24M1001 •
1.55 mm (.061")
*
Children and adults should be
alerted to the hazards of high
surface temperatures. Use
caution around the appliance
to avoid burns or clothing igni-
tion. Young children should be
carefully supervised when they
are in the same room as the
appliance.
*
42M7901 •
* Standard size installed at factory
• Part /Cat. Number
Table 6
WARNING
Burn-in Period
Do not use these appliances if
any part has been under water.
Immediately call a qualified,
professional service technician
to inspect the appliances and to
replace any parts of the control
system and any gas controls
which have been under water.
During the first few fires of this appliance
there will be some odor due to the curing of
paint and burning off of lubricants used in the
manufacturing process.
Note: An Optional Screen Heat
Guard for the glass is available
(see Page 15 for ordering infor-
mation).
Depending on your use, the burn-in period may
take a few hours or a few days.
3
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OPERATION AND CARE OF YOUR
APPLIANCE
WARNING
WARNING
B-Ventappliancesarenotdesigned
tooperateinnegativelypressured
environments (pressure within
the home is less than pressures
outside). Significant negatively
pressured environments caused
byweather, homedesign, orother
devices may impact the operation
of these appliances. Negative
pressuresmayresultinpoorflame
appearance, sooting, damage to
property and/or severe personal
injury. Do not operate these appli-
ances in negatively pressured
environments.Providingadequate
ventilation to the appliance for
combustion air will eliminate a
negative pressure environment.
Carbon monoxide poisoning:
early signs of carbon monoxide
poisoning are similar to the flu
withheadaches,dizzinessand/or
nausea. If you have these signs,
obtainfreshairimmediately.Turn
offthegassupplytotheappliance
and have it serviced by a quali-
fied professional, as it may not
be operating correctly.
The standard controls for appliance operation
are located behind the hinged drop-down panel
belowtheappliancefrontglassenclosurepanel
(see Figure 1). Optional control switches are
also available (see Page 15 - Remote Wall
Switch or Remote Control).
Operation of millivolt and electronic gas con-
trol systems are different. Before lighting and
operatingyourappliancedetermineifyouhave
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 2.
WARNING
Electronic Appliances - Appliances with
electronic systems will be fitted with the
electronic valve shown in Figure 3.
Any safety guard or screen
removed for servicing the appli-
ance must be replaced prior to
operating the appliance.
Millivolt Appliances -
To light millivolt appliances refer to the detailed
lightinginstructionsfoundonPage18.Millivolt
appliance lighting instructions may also be
foundonthepulloutlightinginstructionlabels
attached to the gas control valve.
WARNING
Do not place clothing or other flammable materials on or near appliance.
Gas Control Compartment Access
The gas controls can be found behind the control compartment access panel.
SIT Millivolt Gas Valve
HI/LO Variable
Flame Height
Adjustment
To open the control compartment access panel, actuate the spring-loaded magnetic catches secur-
ing the panel. First, depress the outer top right corner of the panel until the catch "pops" the door
free. Then, gently pull the door forward until the left top corner "pops" free, allowing the panel to
swing out and down to open.
Inlet Pressure Tap
Manifold Pressure Tap
O U T I N
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 1.
I
H
O
F
P
I
L
O
L
O
W
T
O
N
To ease door closure, depress the catches to place them in their retracted position, then close the door.
P
I
L
T
Main Gas Control Knob
OFF/PILOT/ON
Pilot Adjustment
Screw
Note:Thepiezoigniterislocated below
the valve (see Figure 1).
Gas
Inlet
OFF/PILOT/ON (gas control knob)
HI/LO (flame height
control knob)
Gas Flex Line
OFF/ON Switch
Hinge Pin
T
P
T
H
T
P
T
H
Gas Valve
Gas
Outlet
Piezo Igniter
Control
Compartment Access panel
Main Gas
Control Knob
OFF/PILOT/ON
HI/LO Variable
Flame Height
Adjustment
Note: The gas supply line must be installed in accordance with building codes by a qualified
installer approved and/or licensed as required by the locality. In the Commonwealth of Massachu-
setts, installation must be performed by a licensed plumber or gas fitter.
Terminals
TPTH,TP & TH
Figure 2
Figure 1 - Gas Control Compartment Access
4
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2. During the first initial burns of these appli-
ances, there will be some odor emitted (see
Burn-In Period on Page 3 ).
Millivolt appliances are fitted with an OFF/ON
Rocker Switch located behind the control
compartment access panel, below the appli-
ance front glass enclosure panel (see Figure 1
for location). Once the pilot is lit, the OFF/ON
rockerswitchwillcontroltheapplianceOFF/ON
burneroperation. Tooperate: Toggletheswitch
between its ON and OFF positions.
SPILL SWITCH OPERATION
Manual-Reset (safety limit) Spill Switch
This appliance is equipped with a (safety limit)
spillswitchthatisdesignedto"trip"anddiscon-
nect the burner circuit if flue spillage occurs
(because of improper venting of combustion
productsorventblockage). If,duringappliance
operation, the burner flame goes out (indepen-
dentlyoftheburnerOFF/ONwallswitch), itmay
beduetotheoperationofthis(safetylimit)spill
switch. If this switch "trips" it will need to be
manually reset by pressing the reset button on
switch (see Figure 4 ).
3. Keep the lower control compartment clean
by vacuuming or brushing at least twice a
year. Morefrequentcleaningmayberequired
duetoexcessivelintfromcarpeting,bedding
materials, pet hair, etc. It is very important
that the control compartments, burners
and circulating air passageways of the
appliance are kept clean.
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.
If your millivolt appliance is equipped with an
optionalremoteswitchkit(wallswitchorremote
control) and the pilot is lit, the appliance main
burner may be turned on and off using the
optionalswitch.Whenusinganoptionalremote
switch, turn off the standard OFF/ON switch.
Procedure to Reset (safety limit) Spill Switch
ALLOW APPLIANCE TO COOL COMPLETELY
BEFORE ACCESSING AND RESETTING
Note:Topreventexcessiveresistanceinburner
circuit(whichcancauseburneroperationprob-
lems),onlyoneburnercontrolswitchshouldbe
wired to valve. Therefore, if an optional control
switch is installed, the standard Off/On switch
and wires should be removed.
To access the spill switch:
1. Pull off the top louvered panel.
2. Locate and press the red reset button on
the switch (it will click & lock in).
Electronic Appliances -
The appliance should then relight and remain
lit. Ifthisdoesnotoccur, turnofftheappliance
and call a qualified service technician.
To light electronic appliances refer to the
detailed lighting instructions found on Pagex
19. Electronic appliance lighting instructions
mayalsobefoundonthepulloutlightinginstruc-
tion labels attached to the gas control valve.
VENT OPERATION TEST
Press Reset Button on
Spill Switch
A vent operation test is required as part of the
installationtoverifythatproperventingcondi-
tions exist and should be done periodically to
ensure nothing has changed that would affect
proper venting of the appliance.
Once the pilot is lit, if your electronic appliance
is equipped with an optional burner control
switch kit the appliance main burner may be
turned on and off using the optional switch
(See Optional Accessories on Pagex 15 - wall
switch, or remote control Receiver).
Remove Top
Louvered
Panel (or
optional
radiant panel,
if applicable)
Procedure:
1. ENSURE APPLIANCE IS OFF (PILOT ONLY)
AND COOL.
Honeywell Electronic Gas Valve
2. Open both latches on one of the glass
enclosure doors and slightly prop it open at
the bottom (approx. 1/4” gap). See Figure
6 on Page 9.
3. Turn on all the exhaust fans in the dwelling
(and any other appliances which remove
air from the dwelling, such as a furnace or
clothes dryer, etc.).
Manifold
Pressure
Port
ON / OFF Switch
Inlet
Pressure
Port
4. Ensure that all the doors and windows in
the room where the fireplace is located are
closed.
5. Light the appliance (see Lighting Instruc-
tions, Pages 18 & 19 ). Adjust flame
height to highest setting and operate for
approximately 5-10 minutes. Do not leave
appliance unattended.
6. Take a smoke producing device and move it
alongthebottomedgeoftheglassdoor(where
it is cracked open). If smoke is drawn into the
firebox, the vent operation is adequate.
Electronic Gas
Control Valve
Figure 3
Variable Flame Height Adjustment
( Millivolt Appliances only)
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 Figure 2 ).
Figure 4 - Spill Switch
IF THE SMOKE IS NOT DRAWN INTO
THE FIREBOX, TURN THE APPLIANCE
OFF AND CALL A QUALIFIED SERVICE
TECHNICIAN.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
5
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Inspect Venting System
Outside Combustion Air Controls
Outside Air Control Lever
The appliance and venting system should be
thoroughly inspected before initial use and at
least annually by a qualified service technician
(inspectionshouldincludeensuringthatexhaust
or intake passages are unobstructed and vent
componentsareproperlyassembledandnotdam-
aged). 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.
and Securing Screw Location
Manyappliancesareequipped, wheninstalled,
with an outside (make-up air) vent system
that is designed to provide the appliance with
outside make-up air for combustion when in
operation.
Glass Front
The outside air control lever for the outside
air system is standard on all appliances but
should not be operated if the complete system
is not installed. Refer to Figure 5. When the
complete outside air vent system is installed,
the installer will remove the securing screw
from the combustion air control lever located
on the right side of the fireplace opening.
Outside Air Control Lever
with Stop Behind
Clean Lower Control Compartment
Keep lower control compartment clean by vacu-
uming or brushing it out at least twice a year (also
clean the air venturi with a brush or wire). More
frequentcleaningmayberequiredduetoaccumula-
tion of lint from carpeting, bedding materials, pet
hair, spider webs, etc. It is very important that
control compartments, burners, circulating air
passageways and air venturi on the appliance
are NOT obstructed in any way.
Securing Screw
If the securing screw has not been removed
and you have reason to believe that you have
a complete outside air system, contact your
distributortohaveyourapplianceinspectedfor
the presence of the complete system. DO NOT
assume that you have this system in place.
Cleaning Glass
WARNING
(see Front Glass Enclosure Panel, Removal and
Installation on Page 9 ) Note: Clean glass after
firsttwoweeksofoperation(afterBurn-Inperiod
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.
Control Compartment Access Panel
Do not operate the shutoff lever
unless a complete outside com-
bustion air system has been
installed with your appliance.
Figure 5
MAINTENANCE
Toopentheoutsideairshutter,openthebottom
control access panel, and pull the outside air
control lever all the way out. The outside air
shutter should be fully open when the fireplace
is in use and completely closed when the fire-
place is not being used. Closing it when not in
use will prevent outside cold air from entering
the dwelling.
The viewing glass should be cleaned periodically
to remove any build-up caused from the fol-
lowing:
(See Maintenance Schedule, Page 20 )
Refertothemaintenancescheduleformaintenance
tasks, procedures, periodicity and by whom they
should be performed. Always verify proper opera-
tion of the appliance after servicing.
IMPORTANT
Do not use abrasive cleaners on
glass. Never clean glass when hot.
WARNING
Turnoffgasandelectricalpower
before servicing the appliance.
The hand operated outside air control lever is
located on the right side of the fireplace open-
ing. See Figure 5.
• Duringstart-up,itisnormalforcondensationto
formontheinsideoftheglass(thiscondensation
and fog will usually disappear in a few minutes).
The moisture can cause lint, dust and other air-
borne particles to cling to the glass surface.
• Initial curing of the high temperature paint and
burningoffoflubricantsusedinthemanufacturing
process may result in a film on the glass.
•Awhitecoatingmayformontheglassasaresult
of impurities and minerals in the fuel.
It is recommended that the glass be cleaned
two or three times during each heating season,
depending on the circumstances present.
Toopentheoutsideair, openthebottomcontrol
access panel, reach into the gap between the
firebox bottom and pull the outside air control
lever all the way out.
CAUTION
Wearglovesandsafety Glasses
for protection while doing
required maintenance.
Theoutsideairshuttershouldbefullyopenwhen
the fireplace is in use and completely closed
when the fireplace is not being used. Closing
it when not in use will prevent outside cold air
from entering the dwelling.
IMPORTANT
Operate the actuator through several cycles
including the closed position. Ensuring proper
operation and freedom of movement. Return
the actuator arm to the closed position.
The following cleaning solutions are approved for
use to clean glass:
• Non-ammonia based household cleaner
• 50%-50% mix of white vinegar & 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.
Always verify proper operation
after servicing.
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.
6
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Front Glass Enclosure Panel
Cleaning Logs And Burner
Removing Glass Enclosure Panels
(see Figure 6 )
Carefully remove the logs (use care when han-
dlingthefiberlogs,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.
1. Remove the top louver assembly or radiant
panel by pulling it out and off.
WARNING
Do not attempt to touch the front
enclosure glass with your hands
while the fireplace is in use.
2. Open the control compartment access panel
by actuating the spring-loaded magnetic
catchessecuringthepanel(gentlydepressthe
outer top corners of the louvered or radiant
panel until the catches "pop" the door free,
allowing it to swing out and down to the open
position).
3. Locate the two (2) latches at the top of the
control compartment. To disengage the two
latches from the bottom vee-flange of the
glass enclosure panel, reach for the handles
located towards the back of the latches and
pull the handles down toward the front of
the appliance.
WARNING
Donotoperateappliancewiththe
glass front removed, cracked or
broken. Replacementoftheglass
should be done by a licensed or
qualified service technician.
Replacing Logs -
If the logs become damaged by accident or
improper handling and need replacement, use
onlytheproperreplacementlogsfrommanufac-
turer (see Page 23 for ordering information).
Re-Install Embers, Logs and Vermiculite
- Carefully follow placement instructions on
Pages 9 to 12 ). All logs should fit onto cor-
responding pins and/or log stoppers. This will
ensure a proper flame and safe combustion.
4. Swing the bottom of the door out and raise
it slightly to lift the top flange of the door
frame away from the appliance.
WARNING
Installing Glass Enclosure Panels
(see Figure 6 )
Handle this glass with extreme
care! Temperedglassissuscep-
tible to damage – do not scratch
or handle roughly while rein-
stalling the glass door frame.
1. Visuallyinspectthegasketonthebacksideof
thepanels.Thegasketsurfacemustbeclean,
free of irregularities and seated firmly.
2. Position the glass enclosure panel in front of
the firebox opening at a 45 degree angle and
engage the top flange over the lip at the top
of the firebox opening. See Figure 6.
3. Swing the glass enclosure panel down and
back. Ensure the gasket seats evenly as the
panel draws shut. Engage the Vee-flange at
the bottom of the panel with the latches and
close the latches to secure the panel.
4. Close the bottom control compartment
access panel.
Inspect Wiring
Refer to wiring diagrams on Page 14.
WARNING
Label all wires prior to discon-
nection when servicing con-
trols. Wiring errors can cause
improper and dangerous opera-
tion. Verify proper operation
after servicing.
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.
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) Remote Control
or Remote Wall Switch Kit
Lower Compartment
Door & Hinge
Top Flange
Glass Door
WARNING
Glass Door
(Enclosure Panel)
The glass door of this appli-
ance must only be replaced as a
complete unit as provided by the
manufacturer. Do not attempt to
replacebroken,crackedorchipped
glass separately.
Inspect Burner Flame Appearance
Ensure that the burner flame appearance
resembles the flame shown in Figure 15 and
as described in Flame Appearance and Sooting
on Page 13. The Homeowner must contact
a qualified service technician at once if any
abnormal condition is observed.
These fireplaces are designed to operate only
with the glass enclosure panels properly
installed. Generally the glass enclosure panels
should not be removed except to gain access
to the components 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.
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
availableatyourlocalauthorizedLennoxHearth
Productsdealer(cat.no.90L74). Neverattempt
to paint a hot fireplace.
Bottom Vee-flange
Glass Door
Firebox Floor
Glass Door Latch
Figure 6
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. Also note, that
while the front glass enclosure panel (or any of
the panels) is removed, the flame appearance
Donotattempttorepainttheapplianceuntilthe
finish is completely cured (see Burn-In Period
onPage3).Ifthesurfacelaterbecomesstained
ormarred, itmaybelightlysandedandtouched
up with spray paint.
will appear to be smaller than normal.
7
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RE-INSTALLING GRATE, VERMICULITE, GLOWING EMBERS AND LOGS
LOG SET - IDENTIFICATION
Bottom View of Logs (in packaging)
LOG SET
Catalog Number H3210
* Item
Description
A
B
C
D
E
Log, Center
Log, Left Rear
Log, Left Front
Log, Right Rear
Log, Top Center
Log, Front Center
C
A
B
F
F
* Item "letters" above correspond to photos on right
D
E
REFERENCE
Firebox Accessories / Parts
Cat. No.
88L53
Model No.
Description
FGE
Bag of Glowing Embers
(1 oz. rockwool)
Top View of Logs
Vermiculite, Bag (2 liters)
42363
B
E
WARNING
The size and position of the log
set was engineered to give the
appliance a safe, reliable and
attractive flame pattern. Any
attempt to use a different log
set in the fireplace will void
the warranty and will result in
incomplete combustion, soot-
ing, and poor flame quality.
D
A
C
F
Top View of Logs - Installed
B
Glowing Embers
Separate into Quarter
Size (separate) Pieces
D
E
Bag of Glowing
Embers (rockwool)
C
(Valve Access Side)
A
F
Figure 7
8
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READ LOG WARNINGS ON PAGE 9 BEFORE PROCEEDING
8. Place Log (B) as shown in Figure 10.
Position Log (B) Against The Back Of
The Grate Here
1. Remove front glass enclosure panel from appliance.
a. Open Control Compartment Access Panel (see Control Compart-
ment Access Instructions on Page 4.
B
b. Removetheglasspanelenclosure(seeRemovingGlassEnclosure
Panel instructions on Page 9.
2. Remove the following from firebox; log set, embers (rockwool) and
vermiculite. Handle logs carefully to prevent breakage.
3. Ensure the Grate is properly installed in the firebox with the 4 legs
of the grate fitting into the 4 dimples on the firebox floor.
4. InstallVermiculite-Placesomevermiculiteonthefireboxflooraround
thegrate(theentirebagofvermiculitewillNOTbeused).SeeFigure15
on Page 13. DO NOT PLACE ANY VERMICULITE ON THE BURNER.
6. Placement of Glowing Embers -
Separatethe Embers(rockwool)intopiecesabout thesizeofaquarter
(see Figure 7 ). Keep the pieces fluffed up, not matted. Distribute
these pieces over the surface of the burner, as shown in Figure 8.
Do not use more than is necessary. Ensure that the main burner ports
remain uncovered by the ember material.
Position Groove at The Bottom Of Log (B) Over The Grate
Here And Slide It Against The Back Of The Grate
(Valve Access Side)
Figure 10
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. Replacement
Glowing Embers are available (order Catalog Number 88L53).
9. Place Log (C) as shown in Figure 11.
Log (C) Lays Over Logs (A) and (B)
Place Embers on burner as shown.
B
A
C
(Valve Access Side)
DO NOT PLACE EMBERS OVER
GAS PORTS / AREAS CIRCLED
Figure 8
Position The Groove in The Back of Log (C)
Against The Grate
Figure 11
7. Place Log (A) on the grate as shown in Figure 9
10. Place Log (D) as shown in Figure 12.
Position And Slide Log (D) Against The
The Grate
Back Of
A
A
Position The Groove At The Bottom Of
Position Groove At The Bottom Of
Log (A) Over The Grate And Slide It
Log (A) Over The Log Support Here
Forward Against The Grate Here
D
(Valve Access Side)
(Valve Access Side)
Figure 9
Place Log (D) Over The
Here
Flat Spot On Log (A)
Figure 12
9
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10. Place Log (E) as shown in Figure 13.
WARNING
Position round end of log (E) against the notch of
log (D) here. Two charred spots face the front
Logs get very hot and will remain hot up to one hour after gas supply is
turned off. Handle only when logs are cool. Turn off all electricity to the
appliance before you install grate and logs.
E
D
BURNER ADJUSTMENTS (QUALIFIED TECHNICIANS ONLY)
If the air shutter openings closed too far, sooting may develop. 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 surfaces adjacent to the vent termination. Sooting is
caused by incomplete combustion in the flames and lack of combustion air entering the air shutter
opening. To achieve a warm yellowish-orange flame with an orange body that does not soot, the
shutter opening must be adjusted between these two extremes.
C
Position Small End of
Log (E) on The Notch of
Log (C) Here
(Valve Access Side)
Air Shutter Adjustment Guidelines
Figure 13
• 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.
11. Place Log (F) as shown in Figure 14.
• The more offsets in the vent system, the larger 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 per-
sists, adjust the air shutter to a more closed position, then operate the appliance for a few more
minutes to ensure that the flame normalizes and the flames do not appear sooty.
Log (F) sits in front of the grate
Flame Appearance & Sooting
Figure 15 *- Burner Flame Appearance
Proper flame appearance is a
flame which is blue at the base
andbecomesyellowish-orangein
the body of the flame. When the
applianceisfirstlit,theentireflame
maybeblueandwillgraduallyturn
yellowish-orange during the first
15 minutes of operation. If after
period the flame stays lowered
blue, or if the flame is orange with
evidenceofsooting(blacktip),the
air shutter opening may need to
be adjusted.
(Valve Access Side)
Figure 14
F
WARNING
Vermiculite
This appliance is not designed
to burn wood. Any attempt to
do so could cause irreparable
damage to appliance and prove
hazardous to your safety.
The following chart is provided to aid you in
achieving the correct air shutter adjustment
for your installation.
CAUTION
The air shutter door and nearby
appliance surfaces are hot. Exer-
cise caution to avoid injury while
adjusting flame appearance.
Air Shutter Adjustment Guidelines:
Amount of
Primary Air
Flame
Color
Air Shutter
Adjustment
WARNING
If logs are not installed according
totheloginstallationinstructions,
flameimpingementandimproper
combustioncouldoccurandresult
in soot and/or excessive produc-
tion of carbon monoxide (CO), a
colorless, odorless, toxic gas.
If air shutter is
closed too far
Flame will Air shutter
be orange gap should be
increased
CAUTION
If air shutter is
open too far
Flame will Air shutter
be blue gap should be
decreased
Carbonwillbeproducediftheair
shutter is closed too much. Any
damageduetocarboningresult-
ing from improperly setting the
air shutter is not covered under
the warranty.
WARNING
Air shutter adjustment should
only be performed by a qualified
professional service technician.
WARNING
DO NOT attempt to install the logs
untiltheapplianceinstallationhas
been completed, the gas line con-
nectedandtestedforleaksandthe
initial burner operation has been
checked out.
Burner Air Shutter Adjustment Procedure
1. Locateadjustmentrodandadjustairshutter
to the standard setting as shown in Figure
16 (adjustment rod is located in the lower
control area). Note: Rotatingtheadjustment
rod counterclockwise decreases air and
clockwise increases air.
WARNING
Ensure front glass panels are in
place and sealed during adjust-
ment.
10
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2. Light appliance (follow lighting procedure on
lighting label in control compartment or see
homeowners manual).
Decrease Shutter Opening
In This Direction
Main Burner Factory Air Shutter
Opening Setting - All Models
Note - Burners are
omitted in this
view for clarity.
3. Allow the burner to operate for at least 15 min-
utes while observing the flame continuously to
ensure that the proper flame appearance has
been achieved (see Figure 15). If the following
conditions are present, adjust accordingly.
• If flame appears weak or sooty, adjust the
air shutter, incrementally, to a more open
positionuntiltheproperflameappearance
is achieved.
Model
Natural
Gas
Propane
Gas
1/8”
3.2mm
1/4”
6.4mm
Orifice
MPB35ST
Air Shutter
Adjusting
Rod
• If flame stays lowered blue, adjust the air
shutter, incrementally, to a more closed
positionuntiltheproperflameappearance
is achieved.
Adjustment Rod Positions
(when viewed from above)
Increase Shutter Opening
In This Direction
Figure 16
4. Leave the control knob (off/pilot/on) in the ON position and the burner OFF/ON switch OFF (& remote switches, if applicable).
5. When satisfied that the burner flame appearance is normal, close the lower control compartment door.
MAINTENANCE SCHEDULE - Annually (Before the onset of the Burning Season)
MAINTENANCE TASK
ACCOMPLISHING PERSON
PROCEDURE
Inspecting/Cleaning Burner, Logs
and Controls
Qualified Service Technician
Inspect valve and ensure it is properly operating. Check piping
for leaks. Vacuum the control compartment, fireplace logs and
burner area.
Check Flame Patterns and Flame Qualified Service Technician
Height
Refer to Figure 15 on Page 13 and verify the flame pattern
and height displayed by the appliance conforms to the picture.
Flames must not impinge on the logs. Ensure flames are steady
(not lifting or floating).
Inspecting/Cleaning Pilot and Burner
Checking Vent System
Qualified Service Technician
Qualified Service Technician
Refer to Figure 17 and Figure 18 on Page 14. Remove any
surface build-up on pilot and burner assembly. Wipe the pilot
nozzles, igniter/flame rod and hood. Ensure the pilot flame
engulfs the flame sensor as shown.
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 dislocation or deterioration of the vent components. Note:
Inspect wall straps or plumbers's tape to ensure it is secure
and in place.
Appliance Checkout
Qualified Service Technician
Perform the appropriate appliance checkout procedure detailed
in this manual.
Replacing Rockwool Ember Materials Homeowner/Qualified Service
Technician
Remove old ember materials (rockwool) and vacuum the ember
placement area. Place new embers as described in Step 6 on
Page 11.
MAINTENANCE SCHEDULE - Periodically (After the Burning Season)
MAINTENANCE TASK
ACCOMPLISHING PERSON
PROCEDURE
Cleaning Firebox Interior
Homeowner
Carefully remove logs, embers (rockwool), and vermiculite.
Vacuum out interior of the firebox. Clean firebox walls and
log grate. Replace logs, embers (rockwool) and vermiculite as
detailed in this manual (see Pagexs 8-10 ).
Check Flame Patterns and Flame Homeowner
Height
Refer to Figurex 15 on Pagex 10 and verify the flame pattern
and height displayed by the appliance conforms to the picture.
Flames must not impinge on the logs.
Checking Vent System
Homeowner
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 dislocation of the vent components.
Cleaning Front Glass Enclosure Panel Homeowner
Clean as necessary following the directions provided in this
manual. DO NOT TOUCH OR ATTEMPT TO CLEAN GLASS
WHILE HOT.
11
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TROUBLESHOOTING
Note: Before troubleshooting the gas control system, Ensure external gas shut off valve, located at gas supply inlet, (and wall switch, iff applicable), is
in the “ON” position. Important: Valve system troubleshooting should only be accomplished by a qualified service technician.
TROUBLESHOOTING GUIDE - MILLIVOLT GAS CONTROL SYSTEM
SYMPTOM
POSSIBLE CAUSES
CORRECTIVE ACTION
1. Spark igniter will not light pilot after
A. Defective igniter
Check for spark at electrode and pilot; if no spark and
electrode wire is properly connected, replace igniter.
repeated triggering of igniter button.
(no spark at electrode).
B. Defective or misaligned electrode at pilot
Using a match, light pilot. If pilot lights, turn off pilot
and trigger the igniter 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 measures 1/8",
replace pilot (see Figure 17 on Page 14).
(spark at electrode).
C. Gas supply pressure errant.
Checkinletgaspressure. Itshouldbewithinthelimits
as marked on the rating plate.
D. Pilot orifice plugged.
Clean or replace pilot orifice.
2. Pilot will not stay lit after
carefully following the lighting
instructions.
A. Defective pilot generator
(thermocouple).
Check pilot flame, it must impinge on thermocouple
(see Figure 17 on Page 14). Clean and/or adjust pilot
for maximum flame impingement on thermocouple.
Ensure that the connection between the valve and
thermocouple are tight and secure.
3. Pilot burning, no gas to burner, Valve A. Manual Reset Spill Switch has Tripped or is Follow Manual Reset procedure on Page 6. Once the
knob “ON,” and the (standard) burner
OFF/ON switch is “ON." Read impor-
tant note below.
defective.
redresetbuttonisfullydepressedandclicksin, check
continuity with a multimeter between switch terminal
(Ohms). If it shows an open circuit, replace switch.
B. Wall switch or wires defective.
Check wall switch and wires for proper connections.
Jumper wire across terminals at wall switch, if burner
comeson,replacedefectivewallswitch.Ifokay,jumper
wiresacrosswallswitchwiresatvalve,ifburnercomes
on, wires are faulty or connections are bad.
IMPORTANT NOTE: If an optional
*remote switch is used for burner
operation, the standard burner
OFF/ON switch on appliance must
be in the "OFF" position.
C. Thermopile may not be generating suf-
Check thermopile with millivolt meter. Take reading
at thermopile terminals of gas valve. Should read
325 millivolts minimum with optional wall switch
“OFF.” Replace faulty thermopile if reading is below
specified minimum.
ficient millivolts.
*Optional remote switch kits - wall
switch or remote control.
D. Plugged burner orifice.
Check burner orifice for blockage and remove.
E. OFF/ON Switch & *Remote Switch are in
the "ON" position resulting in excessive
resistance.
When turning on the burner using a *remote switch,
ensure that the standard OFF/ON switch is in the "OFF"
position. If both switches are in the ON position, it
may result in excessive resistance (& millivolt drain-
age) and the burner may not come on.
4. Frequent pilot/burner outage prob-
A. Pilot flame may be too low or blowing (high)
Clean and/or adjust pilot flame for maximum flame
impingement on thermocouple (see Figure 19 on
Page 20).
lem.
causing the pilot/valve safety to drop out.
TROUBLESHOOTING GUIDE - ELECTRONIC IGNITION SYSTEM
SYMPTOM
POSSIBLE CAUSES
CORRECTIVE ACTION
1. Burner will not light.
A. Faulty Valve System.
See Below.
B. “OFF/ON” or wall switch defective.
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.
Note: Before replacing “OFF/ON” switch, Ensure to
check wiring for loose connections or broken wires
and repair as needed.
2. Burners come “ON,” then turns “OFF.”
A. Burner orifice plugged.
Check main burner orifice(s) for blockage. Clean
or replace.
B. Obstructed vent system.
Check vent system for obstructions.
12
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TROUBLESHOOTING PROCEDURE - ELECTRONIC IGNITION SYSTEM
START
CHECK
• Line voltage power
• Low voltage transformer
• Limit controller
• Thermostat
• Turn Off Gas Supply.
• Check for proper volt-
age at control harness
(see insert A). Voltage
shouldbe24V between
thermostat or pressure
switchand24Vcommon
and 24V hot.
• Ensure Valve Switch Is In ON Position.
• Disconnect Control Harness.
• Set Thermostat To Call For Heat.
NO
2
• Wiring
YES
• Plug control harness into
valve. Wait for internal check
delay.
Insert A
End View of Control Harness Connector
24 Volt
Common
24 Volt Hot
• With pilot burner cable con-
nected, measure voltage at
valveHSIelementoutput. 24V
nominal. (See insert B)
1
NO
NO
• Igniter warms up and glows
red.
• Replace valve.
2
YES
YES
• Replace igniter/flame rod
assembly.
1
24 Volt
Switched
YES
Check For Damaged or Missing
Terminals in Connector
• Check that pilot gas is flowing. Wait
to ensure pilot gas tubing is purged.
Recycle call for heat if necessary.
NO
NO
NO
• Turn on gas supply.
• Pilot burner lights.
• Replace valve.
Insert B
YES
• Measurevoltagebetween24Vhotand
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 con-
nected and igniter powered.
Igniter Terminals
• Check transformer and
line volt supply.
YES
YES
•
Replace Pilot Assembly.
•
Check that pilot flame makes good
contact with pilot burner flame rod.
• Check for good electrical connection
through the pilot tubing.
•
Main valve opens and main
burner lights.
NO
• If both of the above are good, replace
igniter/flame rod assembly.
YES
YES
• System Is okay.
•
Cycle thermostat off and back on.
Igniter will cycle off and
back on once during the 90
Whenmeasuringvoltage
atconnections,usecare
2
1
NO
second ignition trial. All
voltage measurements must
be taken while the igniter is
powered.
to ensure terminals are
not damaged.
•
Main burner lights.
• Replace valve.
13
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13
Millivolt Appliance Checkout
WARRANTY
Electronic Wiring Diagram (Honeywell)
The pilot flame should be steady, not lifting
or floating. Flame should be blue in color with
traces of orange at the outer edge.
Yourgasapplianceiscoveredbyalimitedtwenty
year warranty. You will find a copy of the war-
ranty accompanying this manual. Please read
the warranty to be familiar with its coverage.
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
The top 3/8" (10 mm) at the pilot generator
(thermopile) and the top ¹⁄₈" min (tip) of the
quickdropoutthermocoupleshouldbeengulfed
in the pilot flame. The flame should project 1"
(25 mm) beyond the hood at all three ports.
See Figure 17.
with the gas valve, in the ON position.
*ON/OFF Switch (Integral
with Gas Valve)
Retain this manual. File it with your other docu-
ments for future reference.
Outlet Box Green
Gas Valve
Ground Screw
PILOT
ASSEMBLY
G
120
VAC.
BK
W
BK
REPLACEMENT PARTS
R
A complete parts list is found at the end of
this manual. Use only parts supplied from the
manufacturer. Normally, all parts should be
ordered through your Lennox distributor or
dealer. Partswillbeshippedatprevailingprices
at time of order.
BL
To light the burner, refer to the lighting instruc-
tions on Page 18.
G
White Wire
To Opposite
Side
Junction Box
MILLIVOLT PILOT ASSEMBLY
W
Igniter Rod
Proper Pilot Flame
Appearance
Hood
Transf.
120 V.
B
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.
G
Hot side of Outlet
Thermocouple
24 V
BL
R
3/8" Min.
(9 mm)
WT
BK
WT
6. The installation date of the appliance.
Ifyouencounteranyproblemsorhaveanyques-
tions concerning the installation or application
of this system, please contact your distributor,
or Lennox directly:
SPILL SWITCH
(high limit disc)
* Optional Control Switches - OFF/ON wall
switch or remote control receiver.
Pilot
Nozzels
Schematic Represen-
tation Only
Thermopile
Figure 17
Field Wired
LENNOX HEARTH PRODUCTS
1110 West Taft Avenue
Orange, CA 92865
Factory
Wired
Figure 19
Electronic Appliance Checkout
To light the burner, refer to the lighting instruc-
tions on Pagex 19. Ensure the igniter lights the
pilot. The pilot flame should engulf the flame
sensor as shown in Figurex 18.
CAUTION: LABELALLWIRESPRIORTODISCONNECTIONWHENSERVICINGCONTROLS. WIRING
ERRORS CAN CAUSE IMPROPER AND DANGEROUS APPLIANCE OPERATION.
Schematic Represen-
Millivolt Wiring Diagram
ELECTRONIC PILOT ASSEMBLY
Proper Pilot Flame Appearance
tation Only
White
If any of the original wire as supplied must
be replaced, it must be replaced with Type
AWM105 C - 18 gage wire.
3/8" to 1/2"
(9 -13 mm)
Proper Flame
Adjustment
* Optional Control Switches - OFF/ON wall
switch or remote control receiver.
Thermopile
Pilot
Nozzels
Ground
Electrode
Note: Turn the appliance-mounted OFF/ON
burner control switch to the OFF position if an
optional control switch is installed.
Black
Field Wired
Flame Rod
Factory
Wired
* Optional Control Switch
Appliance mounted OFF / ON Switch
Figure 20
Hot Surface
Igniter
Figure 18
PRODUCT REFERENCE INFORMATION
We recommend that you record the following important information about your fireplace. Please
contact your Lennox dealer for any questions or concerns. For the number of your nearest Lennox
dealer, please call 800-731-8101
Withpropercareandmaintenance,yourappliance
willprovidemanyyearsofenjoyment.Ifyoushould
experience any problem, first refer to the trouble
shootingguideinthismanual.Ifproblempersists,
contact your Lennox distributor.
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 ____________________________________
WIRING DIAGRAMS
Wiring diagrams are provided here for refer-
ence purposes only. This information is also
providedonschematicsattacheddirectlytothe
appliance on a pullout panel located within the
control compartment.
Your Dealer's Name ________________________________________________
14
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ACCESSORY COMPONENTS
Product Reference Information
Cat.
No.
Model
Ship.
Weight
Ship.
Volumn
H3201
H3202
H3203
MPD35ST-NM
MPD35ST-PM
MPD35ST-NE
220 lbs
220 lbs
220 lbs
46Wx26Dx43H
(30 cu.ft.)
46Wx26Dx43H
(30 cu.ft.)
46Wx26Dx43H
(30 cu.ft.)
3 Piece Trim Kit
Bag of Glowing Embers
Bag of Volcanic Stone
Cat. No.
96K21
Model No.
TK35PB3
Description
35” 3 Piece Finish Trim Kit,
Polished Brass
Replacementembermaterialsorvolcanicstone
are available for use with these appliances.
Order kits as part of the periodic maintenance
of the appliance.
(ref. Form # 750,147M)
Polished Brass 3-Piece Trim Kit
This kit contains brass trim pieces used to
finish the gaps between the wall board and
the fireplace, providing the appliance a brass
perimeter highlight. This kit contains the trim
pieces and these instructions.
Decorative Firebox Accessories
Cat. No.
88L53
Model No.
FGE
Description
Bag of Glowing Embers
(1 oz. rockwool)
Bag of Decorative
Volcanic Stone
80L42
FDVS
Remote Control Kit, Standard
(FDVS ref. Form #750,010M)
Cat. No.
H0249
Model No.
RCL
Description
Remote Control System
(Standard)
(ref. Form # 750,127M)
Standard Remote Control System
The Model RCL (Standard) Remote Control
System, features a simplistic OFF/ON control
function for the fireplace. This model includes
a hand-held transmitter, 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.
4 Piece Trim Kit
Cat. No.
96K17
Model No.
TK35PB4
Description
35” 4 Piece Finish Trim Kit,
Polished Brass
(ref. Form # ii-9299)
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
transmitterispressed,asignallightilluminates
briefly to verify that a signal has been sent.
White Wall Switch Kit
Cat. No.
85L87
Model No.
FWSK
Description
OFF/ON Wall Switch Kit
A
The Model RCL is designed to operate with all
millivolt ignition systems, as well as electronic
ignition systems. It may be installed with use
for either natural or propane gas appliances.
The RCL offers ease of installation and allows
youtoexecuteon-offcommandstothefireplace
effortlessly with one simple motion.
OFF/ON Wall Switch Kit
The OFF/ON wall switch kit may be used to
control the operation of the fireplace burner.
Install the OFF/ON wall switch in a convenient
location near the fireplace.
Touch-Up Paint Kits
Model No. Description
Cat. No.
90L74
TPK-C
TPK-T
Touch-Up Paint (Charcoal)
Touch-Up Paint (Tan)
98K67
(TPK-C ref. Form # 504,216M)
The Model RCL comes complete with detailed
operating instructions.
Touch-Up Paint Kit
Repair of minor scratches and discoloration of
theappliancecharcoalpaintedsurfacesmaybe
accomplished with the touch-up paint kit.
15
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
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ACCESSORY COMPONENTS
Arch
Design
Arch Pane
Design
35" Screen Heat Guard Kit
Clean Face Charcoal Radiant Panel Kits
Cat. No.
26M48
Model No.
HG35M
Description
35" Screen Heat Guard Kit
Cat. No.
88L36
Model No.
RAD35C-2
Description
Square
Design
Clean Face Panel Kit
(ref. Form # 504,223M)
(ref. Form # 750,101M)
Clean Face Panel Kits
Screen Heat Guard Kit
Cleanfacedpanelkitsareavailabletoconvertthe
standard louvered fireplaces to radiant models
which are more suited for finishing around the
firebox opening with non-combustible materi-
als, such as tile.
This easy to install optional screen heat guard
installsoverthestandardglassenclosurepanel
toprovideprotectionfromthehotglasssurface.
Thesescreenheatguardpanelscannot beused
in conjunction with the arch door kits or door
frame kits. Order 2 if a set is desired (for front
face and rear face glass surfaces).
Square
Pane
Design
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 Pane Design Kits
H0930
H0931
H0932
H0933
APD35C 35” Arch Pane Doors, Char.
APD35TI 35” Arch Pane Doors, Text. Iron
APD35SP 35” Arch Pane Doors, Satin Pew.
APD35AB 35” Arch Pane Doors, Ant. Brass
Arch Design Kits
Cat. No.
H0858
H0859
H0860
H0861
Model
Description
AD35C 35” Arch Doors, Charcoal
AD35TI 35” Arch Doors, Textured Iron
AD35SP 35” Arch Doors, Satin Pewter
AD35AB 35” Arch Doors, Antique Brass
Brickaded Wall Liner Kits
Cat. No.
H3207
Model No.
Description
4 Piece Door Trim Kits
Square Design Kits
MBLK-35ST Interior Brick Liner Kit
Cat. No.
26M82
26M85
Model No.
4DFK35PB
4DFK35BS
Description
Cat. No.
H0946
H0947
H0948
H0949
Model
SD35C
Description
Door Trim, Polished Brass
Door Trim, Brushed Stainless
(ref. Form # 750,160M)
35” Sq. Doors, Charcoal
SD35TI 35” Sq. Doors, Textured Iron
SD35SP 35” Sq. Doors, Satin Pewter
SD35AB 35” Sq. Doors, Antique Brass
(ref. Form # 750,098M)
Brickaded Panel Liner Kit
The brickaded liner kits include ceramic panels
as shown here. The panels have brick-like
features in relief.
Door Frame Kits
Square Pane Design Kits
A decorative door frame kit is available for use
with these appliances. It is designed to attach
directly to the front face of the appliance at the
fouredgesoftheglassenclosurepanelresulting
in the appearance of a picture frame.
H0962
H0963
H0964
H0965
SPD35C
35” Sq. Pane Doors, Char.
SPD35TI 35” Sq. Pane Doors, Text. Iron
SPD35SP 35” Sq. Pane Doors, Satin Pew.
SPD35AB 35” Sq. Pane Doors, Ant. Brass
(ref. Form # 775,169M)
16
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
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ACCESSORY COMPONENTS
2-Piece Louver Kits
Model No.
* 35" Eyebrow Hood Kits
Cat. No.
96L05
Description
Cat. No.
96K67
Model No.
EB35PB
Description
2 Pc. Louver Kit,
Polished Brass
Hood Kit, Polished
Brass
2LVR35PB
2LVR35BS
* 35" Arch Door Kits
Cat. No.
Model No.
Description
2 Pc. Louver Kit,
Brushed Stainless
Hood Kit, Brushed
Stainless
96L09
88L49
EB35BS
26M43 ADK35CMPB Arch Door, Polished Brass
26M44 ADK35CMBS Arch Door, Brushed Stainless
(ref. Form # 750,021M)
(ref. Form # 504,224M))
* These hood kits replace the standard hood that
comes with these fireplaces.
(ref. Form #504,142M)
2-Piece Polished Brass and Brushed
Stainless Louvers Kits
Arch Door Kits
Polished Brass and Brushed Stainless
Hood Kits
These louvers are designed to replace either
the middle charcoal louver of each set or the
charcoal louver in each set closest to the glass
door. These kits include two narrow louvers.
They provide a touch of elegance to these
appliances. These kits can be retrofitted to
previously installed appliances.
Two types of arch door kits are available for
the Multi-Open Series. Both types of kits are
easy to install and do not require hardware to
attach them to the standard door frame. These
kits can be retrofitted to previously installed
Multi-Open Series appliances. The decorative
arch kits can not be used in conjunction with
the screen panel kit.
Attractive hoods are available in two styles to
be used on the Multi-Open Series appliances.
Thesehoodsaredesignedtobefittedtotheglass
viewing sides of the appliance. In addition to
providing an aesthetically pleasing appearance
toyourapplianceinstallation, thehoodreduces
heat effects to decorative mantles and finish
materials located above the fireplace opening.
The hood kit replaces the standard hood that
comes with these appliances and snaps into
place. Thesekitscanberetrofittedtopreviously
installed appliances.
Outside Air Kits Models FOAK-4 and
FOAK-4LD
OutsideAirkitsareavailablewithduct(FOAK-4)
and without duct (FOAK-4LD) for use if outside
combustion air is required or desired. If model
FOAK-4LDisuseditmustbeusedinconjunction
with locally purchased, non-combustible Class
1 or Class 0 flexible duct.
35" Assembled Louver Kits
Cat. No.
88L28
Model No.
Description
Louver Kit, Polished
Brass
LVR35PB-2
Louver Kit, Brushed
Stainless
88L32
LVR35BS-2
(ref. Form # 750,119M)
Outside Combustion Air Kits
Cat. No.
81L87
Model No.
FOAK-4
Description
Polished Brass and Brushed Stainless
Louvers Kits
CombustionAirKit(with
duct)
Decorative louvers are available for use with all
Multi-Open Series appliances. These louvers
are designed to replace the standard radiant
panels that are provided with the appliance.
These kits include a top 3-piece assembly and
a bottom 3-piece assembly. They provide a
touch of elegance to any Multi-Open Series
appliance. These kits can be retrofitted to
previously installed appliances.
81L88
FOAK-4LD
Combustion Air Kit
(without duct)
(ref. Form # 750,008M)
17
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
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LIGHTING INSTRUCTIONS – 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 lit with a piezo
igniter. 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. Ensure 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.
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.
2. Access the lower control compartment.
3. Turn OFF/ON switch to “OFF” (and remote wall switch, if appli-
7. Push in gas control knob slightly and turn counterclockwise
cable).
to “PILOT.”
4. Verify main line shut-off valve is open.
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.
5. Push in gas control knob slightly and turn clockwise
to “OFF.”
SIT Millivolt Gas Valve
•
If knob does not pop up when released, stop
and immediately call your service technician
or gas supplier.
N I N
T U O U T
TP/TH
TP
H
F
O
P
I
L
O
W
T
TH
•
If pilot will not stay lit after several tries,
turn the control knob to “OFF” and call
your service technician or gas supplier.
O
N
I
T O
Millivolt Pilot
- LO / HI +
GAS CONTROL
KNOB
9. Turn gas control knob counterclockwise
BURNER
OFF/ON SWITCH
PIEZO
IGNITER
to “ON.”
10. Close lower control compartment.
Note: Knob cannot be turned from “PILOT” to “OFF”
unless the knob is pushed in slightly. Do not force.
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.
18
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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 OFF/ON 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 OFF/ON switch to “ON”. Do not force.
Honeywell Electronic Gas Control Valve
ON / OFF Switch
8. Turn “ON” all electrical power to appliance (remote wall
or appliance switch).
9. Close lower control compartment door.
TO SHUT OFF
1. Turn off all electrical power to the appliance (remote wall
switch).
Front View
TO TURN OFF GAS TO APPLIANCE
1. For complete shut-down, turn remote wall switch to
3. Turn the OFF/ON 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.
19
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REPLACEMENT PARTS - MPB35ST
Item
Part/Cat.
Qty
Description
Misc. Replacement Parts
Log Set
Where Used
Item
Part/Cat.
Qty
Description
Where Used
SIT Millivolt Only
1
1
H3357
H3355
1
1
Gas Train Assembly, NG, MV
Gas Train Assembly, LP, MV
MPB35ST-NM
MPB35ST-PM
14
15
H3210
1
2
All
All
Louver Assembly, Upper
Charcoal
LB-92449B
Honeywell Electronic Only
Louver Assembly, Lower,
Charcoal (valve access side)
2
3
H3356
1
1
Gas Train Assembly, NG, Elecrtr.
MPB35ST-NE
16
LB-92652B
1
All
MPB35ST-NE &
MPB35ST-PE
LB-97493
Transformer
17
18
19
20
21
22
H3359
69L3101
94326
1
2
2
8
2
1
Louver Assembly, Lower, Char.
Magnet, Latch, Spring-Loaded
Magnet
All
All
All
All
All
Misc. Replacement Parts
Brickaded Side Panels
Burner, Pan
4
5
H3351
H3352
2
1
1
2
1
2
All
All
All
All
All
All
All
All
All
All
LB-95668
12L15
Nailing Flange
Nameplate, Lennox
6
H3353
*Electrical kit
24M1001
Orifice, Burner, NG, #37 (.104")
MPB35ST-NM &
MPB35ST-NE
7
LB-91941B
93L32
Eyebrow Panel
8
Flex Line Gas Connector, FFGC
Glass Enclosure Assembly
Glowing Embers (1 oz.), FGE
Grate Assembly
22
23
42M7901
111061
1
1
Orifice, Burner, LP, 1.55mm
(.061")
MPB35ST-PM &
MPB35ST-PE
9
LB-92398B
88L53
MPB35ST-NM &
MPB35ST-PM
10
11
12
13
Piezo Igniter
H3358
1
4
1
24
10
27K30
42363
1
1
Switch, OFF/ON, Rocker
Vermiculite, Bag (2 liters)
All
All
69L2101
H3354
Latch, Glass Enclosure Panel
Firebox Sub-floor
* Electrical Outlet Kit consists of a junction box, 2 screws, an receptacle outlet, an OFF/ON rocker switch
and a snap bushing. Note: All the components in the electrical kit will Not be used by every model.
Note: Ordering information for Volcanic Stone, Glowing Embers and Touch-up Paint can be found
on Page 15
10
4
7
15
7
3
9
15
20
17
6
22
2
22
9
1
11
8
16
13
8
21
14
5
12
18
19
24
23
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. © 2005 by LENNOX HEARTH PRODUCTS
20
P/N 875,024M REV. NC 04/2005
1110 West Taft Avenue • Orange, CA 92865
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