Lennox MERIT PLUS, MPD35ST-NE, MPD35ST-PM, MPD35ST-NM owner's Manual

HOMEOWNER'S CARE AND
OPERATION INSTRUCTIONS

DIRECT VENT SEE-THROUGH

RETAIN THESE INSTRUCTIONS

FOR FUTURE REFERENCE

WARNINGS

• 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 appli­ance. Severe burns may result.
Carefully supervise children in the

•
same room as appliance.

If small children are present in the home, it is

•
recommended that this appliance be fi tted with
a screen door or screen panel kit. See Page 14
for ordering information.

WARNING: IF THE INFORMATION IN THIS MANUAL
IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLO­SION MAY RESULT CAUSING PROPERTY DAMAGE,
PERSONAL INJURY OR LOSS OF LIFE.

FOR YOUR SAFETY: Do not store or use gasoline
or other fl ammables or liquids in the vicinity of
this or any other appliance.

FOR YOUR SAFETY: What to do if you smell gas:

MERIT® PLUS SERIES

DIRECT-VENT GAS FIREPLACE HEATERS

P/N 875,025M REV. A 05/2006

MODELS

Millivolt Models Electronic Models

MPD35ST-NM MPD35ST-NE
MPD35ST-PM

A French manual is available upon request. Order P/N 875,025CF

Ce manuel d’installation est disponible en francais, simplement en
faire la demande. Numéro de la pièce 875,025CF

AVERTISSEMENT: ASSUREZ-VOUS DE BIEN
SUIVRE LES INSTRUCTIONS DONNÉ DANS CETTE
NOTICE POUR RÉDUIRE AU MINIMUM LE RISQUE
D'INCENDIE OU POUR ÉVITER TOUT DOMMAGE
MATÉRIEL, TOUTE BLESSURE OU LA MORT.

POUR VOTRE SÉCURITÉ: Ne pas entreposer ni
utiliser d'essence ni d'autre vapeurs ou liquides
infl ammables 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. Follow your gas suppliers
instructions.

• If your gas supplier cannot be reached, call
the fi re department.

Installation and service must be performed by
a qualifi ed installer, service agency or the gas
supplier.

OTL Report No. 116-F-28-5

POUR VOTRE SÉCURITÉ: Que faire si vous sentez
une odeur de gaz:

• Ne pas tenter d'allumer d'appareil.

• Ne touchez à aucun interrupteur. Ne pas vous
servir des téléphones se trouvant dans le 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.

• Si vous ne pouvez rejoindre le fournisseur de
gaz, appelez le service dos incendies.

L'installation et service doit être exécuté par un
qualifi é installeur, agence de service ou le fournis­seur de gaz.

SAFETY & WARNIING
INFORMATION

IMPORTANT: PLEASE READ THIS
MANUAL IN ITS ENTIRETY AND
UNDERSTAND THESE RULES TO
FOLLOW FOR SAFETY.

WARNING

If the information in this
manual is not followed
exactly, a fi re or explo­sion may result caus­ing property damage,
personal injury or loss
of life.

WARNING

Improper installation, adjust­ment, alteration, service or
maintenance can cause injury
or property damage. Refer to
this manual. For assistance or
additional information consult
a qualified installer, service
agency or the gas supplier.

WARNING

Children and adults should be
alerted to the hazards of high
surface temperatures. Use
caution around the appliance
to avoid burns or clothing igni­tion. Young children should be
carefully supervised when they
are in the same room as the
appliance.

Note: An Optional Screen Panel
for the glass is available (see
Page 14 for ordering informa­tion).

WARNING

Do not place clothing or other
fl ammable materials on or near
this appliance.

AVERTISSEMENT

Surveiller les enfants. Garder les
vêtements, les meubles, l'essence
ou autres liquides à vapeur infl am­mables à cote de l'appareil.

WARNING

Do not use these appliances if
any part has been under water.
Immediately call a qualifi ed,
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.

AVERTISSEMENT

Ne pas se servir de cet appareil
s'il a été plongé dans l'eau,
complètement ou en partie.
Appeler un technicien qualifi é
pour inspecter l'appareil et rem­placer toute partie du système de
contrôle et toute commande qui
ont été plongés dans l'eau.

WARNING

Do not attempt to alter or modify
the construction of the appliance
or its components. Any modi­fi cation or alteration may void
the warranty, certifi cation and
listings of this unit.

WARNING

Failure to comply with the instal­lation and operating instructions
provided in this document will
result in an improperly installed
and operating appliance, voiding
its warranty. Any change to this
appliance and/or its operating
controls is dangerous. Improper
installation or use of this appli­ance can cause serious injury or
death from fi re, burns, explosion
or carbon monoxide poisoning.

IMPORTANT

These appliances must not be
connected to a chimney or fl ue
serving a separate Solid-Fuel
burning appliance.

2

WARNING

Carbon monoxide poisoning:
early signs of carbon monoxide
poisoning are similar to the fl u
with headaches, dizziness and/or
nausea. If you have these signs,
obtain fresh air immediately.
Turn off the gas supply to the
appliance and have it serviced
by a qualifi ed professional, as it
may not be operating correctly.

WARNING

Any safety guard or screen
removed for servicing the appli­ance must be replaced prior to
operating the appliance.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

WARNING

This appliance is only for use with
the type of gas indicated on rating
plate. This appliance is not con­vertible for use with other gases,
unless a certifi ed kit is used.

AVERTISSEMENT

Cet appareil doit être utilisé
uniquement avec les types de
gaz indiqués sur la plaque sig­nalétique. Ne pas l'utiliser avec
d'autres gaz sauf si un kit de
conversion certifi é est installé.

WARNING

These fi replaces are vented heat­ers. Do not burn wood or other
material in these appliances.

CONGRATULATIONS!

In selecting this LENNOX Direct-Vent Gas Appliance you have chosen the fi nest and most

dependable fi replace to be found anywhere. Its a beautiful, prestigious alternative
to a wood burning fi replace. Welcome to a Family of tens of thousands of satisfi ed
LENNOX Fireplace Owners.

Please carefully read and follow all of the instructions found in this manual. Please pay
special attention to the safety instructions provided in this manual. The Homeowner's
Care and Operation Instructions included here will assure that you have many years
of dependable and enjoyable service from your LENNOX product.

TABLE OF CONTENTS

Warning & Safety Information ..........Page 2

Introduction ......................................Page 3

General Information ..........................Page 3

Gas Controls Access .........................Page 4

Operation / Care of Your Appliance ...Page 4

Variable Flame Adjustment ................Page 5

Maintenance ......................................Page 5

Front Glass Enclosure Panel,

Removal and Installation .................Page 7

Install Grate, Vermiculite

Embers & Logs .................................Page 8

Burner Flame Appearance & Sooting Page 10

Burner Flame Adjustments ................Page 10

Millivolt Appliance Checkout .............Page 11

Electronic Appliance Checkout ..........Page 11

Wiring Diagrams ...............................Page 12

Warranty ...........................................Page 12

Product Reference Information .........Page 12

Accessory Components ....................Page 13

Lighting Instructions – Millivolt ........Page 17

Lighting Instructions – Electronic .....Page 19

Maintenance Schedule ......................Page 21

Troubleshooting Guide – Millivolt .....Page 22

Troubleshooting Guide – Electronic ..Page 22

Replacement Parts List .....................Page 24

INTRODUCTION

The Fireplace models covered in this manual
are Direct-Vent sealed combustion gas fi replace
heaters designed for residential application.
Direct-Vent appliances operate with the com­bustion chamber completely isolated from the
indoor environment. All air for combustion is
brought in from the outside and exhaust gases
are vented through the same direct vent, co-axial
(intake/exhaust) vent system.

The Millivolt appliances have a millivolt gas
control valve with piezo ignition system provides
safe, effi cient operation. If any optional acces­sories which require electrical power are being
installed, the electrical power must be provided
at the time of appliance installation.

The Electronic appliances have an electronic
intermittent pilot system provides safe, effi cient
operation. External electrical power is required
to operate these appliances.

These appliances comply with National Safety
Standards and are tested and listed by OMNI­Test Laboratories, Inc. (Report No.116-F-28-5)
to ANSI Z21.88a-2003 (in Canada, CSA-2.33a-

2003), and CAN/CGA-2.17-M91 in both USA and
Canada, as vented gas fi replace heaters.

The Installation must conform to local codes
or, in the absence of local codes, with the
National Fuel Gas Code, ANSI Z223.1/NFPA
54-latest edition, or the Natural Gas and
Propane Installation Code, CSA B149.1-latest
edition. The appliance, when installed, must
be electrically grounded in accordance with
local codes or, in the absence of local codes,
the latest edition of the National Electrical Code,
ANSI/NFPA 70, or the Canadian Electrical Code,
CSA C22.1 - latest editions.

GENERAL INFORMATION

Note: Installation and repair should be per­formed by a qualifi ed service person. The
appliance should be inspected annually by a
qualifi ed professional service technician. More
frequent inspections and cleanings may be
required due to excessive lint from carpeting,
bedding material, etc.

It is imperative that the control compartment,
burners and circulating air passage ways of
appliance be kept clean. See Maintenance
instructions on Page 5.

S'assurer que le brùleur et le compartiment des
commandes sont propres. Voir les instructions
d'installation et d'utilisation qui accompagnent
l'appareil.

Provide adequate clearances around air open­ings and adequate accessibility clearance for
service and proper operation. Never obstruct
the front openings of the appliance.

Due to high temperatures the appliance should
be located out of traffi c and away from furniture
and draperies. Locate furniture and window
coverings accordingly.

These fi replaces are designed as supplemen­tal heaters. Therefore, it is advisable to have
an alternate heat source when installed in a
dwelling.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

These appliances are designed to operate on natu ral
gas or propane gas only. The use of other fuels or
combination of fuels will degrade the performance
of this system and may be dangerous.

Millivolt Models - BTU Input

Millivolt models come standard with the manu­ally-modulated gas valve; fl ame appearance and
heat output can be controlled at the gas valve.
The BTU Input for millivolt models is shown
in Table 1:

Input (BTU) Manually-Modulated Gas

Valves (millivolt models)

Models Fuel

Type

MPD35ST-NM Nat. Gas

MPD35ST-PM Propane

Input Rate

(BTU / HR)

30,000 high

23,000 low

28,000 high

22,000 low

Table 1

Electronic Models -

Electronic models have a fi xed rate gas valve.
The BTU Input for electronic models is shown
in Table 2:

Input (BTU) - Fixed Rate

(electronic models)

Models Fuel

Type

MPD35ST-NE Nat. Gas 30,000

MPD35ST-PE

(if fi eld converted)

Pro. Gas 28,000

Input Rate

(BTU / HR)

Table 2

Gas Pressure -

Tables 3, 4 and 5 show the appliances' gas
pressure requirements.

Inlet Gas Supply Pressure

(all models)

Fuel # Minimum Maximum

Natural Gas

Propane

5.0" WC

(1.24 kPa)

11.0" WC

(2.74 kPa)

10.5" WC

(2.61 kPa)

13.0" WC

(3.23 kPa)

Table 3

Manifold Gas Supply Pressure

(millivolt models)

Fuel # Low High

Natural

Gas

Propane

(Lo) 2.2" WC

(.55 kPa)

(Lo) 6.3" WC

(1.57 kPa)

(Hi) 3.5" WC

(.87 kPa)

(Hi) 10.0" WC

(2.49 kPa)

Table 4

3

Manifold Gas Supply Pressure

(electronic models)

Fuel # Fixed

Natural Gas

Propane

3.5" WC

(.87 kPa)

10.0" WC

(2.49 kPa)

Table 5

Test gauge connections are provided on the
front of the millivolt gas control valve, identi­fi ed IN for the inlet and OUT for the manifold
side (see Figure 2 on Page 5). A 1/8" NPT Test
gauge connection is provided at the inlet and
outlet (manifold) ports on the electronic gas
control valve (see Figure 3 on Page 5).

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).

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).

Orifi ce Sizes - Sea Level to High Altitude
(All Models)

These appliances are tested and approved for
installations at elevations of 0-4500 feet (0-1372
meters) above sea level using the standard burner
orifice sizes (marked with an "*" in Table 6). At
the time of installation, it must be determined
if the appliance needs to be derated. Contact
your local gas supplier for deration requirements
for your area.

Deration - At higher elevations, the amount of
BTU fuel value delivered must be reduced by
either using gas that has been derated by the gas
company or by changing the burner orifi ce to a
smaller size as regulated by the local authorities
having jurisdiction and by the (USA) National
Fuel Gas Code NFPA 54 / ANSI Z223.1 - latest
edition or, in Canada, the CAN1-B149.1 and .2
codes - latest edition.

Burner Orifi ce Sizes (all models)

Elevation

Feet (meters)

0-4500

(0-1372)

* Standard size installed at factory

• Part /Cat. Number

Natural

Gas

drill size (inches)

#37 (.104")

24M10 •

*

Propane

Gas

drill size (inches)

1.55

mm

(.061")

42M79 •

*

Table 6

Burn-in Period

During the fi rst few fi res of this appliance there
will be some odor due to the curing of the
paint and burning off of lubricants used in the
manufacturing process.

Depending on your use, the burn-in period may
take a few hours or a few days.

KEEP YOUR HOUSE WELL VENTILATED
DURING THE CURING PROCESS. THE ODOR
AND HAZE EMITTED DURING THE CURING
PROCESS CAN BE QUITE NOTICEABLE AND
MAY SET OFF A SMOKE DETECTOR.

If an optional blower is installed, Do not turn it
on during the Burn-In period.

A white fi lm may develop on the glass front
during the fi rst few fi res as part of the curing
process. The glass should be kept clean during
the fi rst two weeks of use to prevent the fi lm from
baking on (making it very diffi cult to remove).
See Cleaning Glass on Page 5.

Gas Control Compartment Access

The gas controls can be found behind the control
compartment access panel.

To open the control compartment access panel,
actuate the spring-loaded magnetic catches
securing 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.

On millivolt systems, the piezo igniter, HI/LO
fl ame 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.

To ease door closure, depress the catches to
place them in their retracted position, then
close the door.

OFF/PILOT/ON (gas control knob)

HI/LO (fl ame height

control knob)

OFF/ON Switch

Hinge Pin

Control
Compartment Access panel

Piezo Igniter

Figure 1 - Gas Control Compartment Access

OPERATION AND CARE OF YOUR
APPLIANCE

The standard controls for appliance operation
are located behind the hinged drop-down panel
below the appliance front glass enclosure panel
(see Figure 1). Optional control switches are
also available (see Page 13 - Remote Wall
Switch, Remote Control or Wall Thermostat).

Operation of millivolt and electronic gas con­trol systems are different. Before lighting and
operating your appliance determine if you have
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 fi tted with the gas
control valve shown in Figure 2.

Electronic Appliances - Appliances with

electronic systems will be fi tted with the
electronic valve shown in Figure 3.

Millivolt Appliances -

To light millivolt appliances refer to the detailed
lighting instructions found on Page 17. Millivolt

appliance lighting instructions may also be
found on the pull out lighting instruction labels
attached to the gas control valve.

Millivolt appliances are fi tted with an OFF/ON
Rocker Switch located behind the control
compartment access panel, below the appli­ance front glass enclosure panel (see Figure 1
for location). Once the pilot is lit, the OFF/ON
rocker switch will control the appliance OFF/ON
burner operation. To operate: Toggle the switch
between its ON and OFF positions.

If your millivolt appliance is equipped with an
optional remote switch kit (wall switch, remote
control or wall thermostat) and the pilot is lit,
the appliance main burner may be turned on
and off using the optional switch. When using
an optional remote switch, turn off the standard
OFF/ON switch.

Note:The gas supply

line must be installed

in accordance with

building codes by a

qualifi ed installer

approved and/or

licensed as requed

by the locality. In

the Commonwealth

of Massachusetts,

installation must

be performed

by a licensed

Gas Flex Line

Gas Valve

plumber or gas

fi tter.

4

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

SIT Millivolt Gas Valve

HI/LO Variable
Flame Height
Adjustment

T
P

HT

TPT
H

L

O

T

Pilot Adjustment
Screw

Gas
Outlet

Terminals

TPTH,TP & TH

ON

OFF

Manifold Pressure Tap

P

I

OFF/ON
(burner)

Note: The piezo igniter and burner
OFF/ON switch are located below
glass panel (see Figure 1).

Inlet Pressure Tap

I

H

L

O

W

Main Gas

Control Knob

OFF/PILOT/ON

TPTH TP TH

HI/LO Variable
Flame Height
Adjustment

IN

OUT

F

F

O

P

I

L

it

O

T

O

N

Gas
Inlet

Main Gas

Control Knob

OFF/PILOT/ON

IGNITER

Figure 2

Honeywell Electronic Gas Valve

Manifold Pressure
Port

I

G
N
I

T
ER

Figure 3

Note: To prevent excessive resistance in burner

circuit (which can cause burner operation prob­lems), only one burner control switch should be
wired to valve. Therefore, if an optional control
switch is installed, the standard Off/On switch
and wires should be removed.

Electronic Appliances -

To light electronic appliances refer to the detailed
lighting instructions found on Page 19.

Electronic appliance lighting instructions may
also be found on the pull out lighting instruction
labels attached to the gas control valve.

C
O
N
T
R

NO

O

FFO

L

ON / OFF Switch

Inlet
Pressure
Port

NI

PSI

Electronic Gas
Control Valve

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 Page 13 - Wall Switch, Wall

Thermostat Or Remote Control Receiver).

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 fi xed low and high settings
while the appliance is in operation. Adjust
the fl ame height as desired after lighting the
appliance by rotating the variable adjustment
control knob (HI/LO) located on the front of
the valve (refer to Figure 2).

2. During the fi rst initial burns of these appli-

ances, there will be some odor emitted (see
Burn-In Period on Page 4).

3. Keep the 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
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 fl ammable liquids.

6. Remember, Millivolt appliances have a continu-

ous burning pilot fl ame. Exercise caution when
using products with combustible vapors.

MAINTENANCE

(See Maintenance Schedule, Page 21)

Refer to the maintenance schedule for maintenance
tasks, procedures, periodicity and by whom they
should be performed. Always verify proper opera­tion of the appliance after servicing.

WARNING

Turn off gas and electrical power
before servicing the appliance.

CAUTION

Wear gloves and safety Glasses
for protection while doing
required maintenance

.

IMPORTANT

Always verify proper operation
after servicing.

Before re-lighting the fi replace, refer to the
lighting instructions in this manual. Instruc­tions are also found on pull-out panels
located below the glass door in the control
compartment.

Inspect Venting System

The appliance and venting system should be
thoroughly inspected before initial use and at
least annually by a qualifi ed service technician
(inspection should include ensuring that exhaust
or intake passages are unobstructed and vent
components are properly assembled and not
damaged). If the venting system is disassembled
for any reason, a qualifi ed 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.

Clean Lower Control Compartment

Keep lower control compartment clean by
vacuuming or brushing it out at least twice a
year (also clean the air venturi with a brush or
wire). More frequent cleaning may be required
due to accumulation 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.

IMPORTANT

It is imperative that the control
compartment, burners and cir­culating air passage ways of the
appliance be kept clean.

Cleaning Glass

(see Front Glass Enclosure Panel, Removal
and Installation on Page 7). Note: Clean glass

after fi rst two weeks of operation (after Burn-In
period is over) and then only when necessary
and when the fi replace is cool. Wipe surface
with clean, dampened, soft cloth. Follow with
dry, soft towel as desired. Take care not to
scratch the glass surface.

The viewing glass should be cleaned periodi­cally to remove any build-up caused from the
following:

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

5

IMPORTANT

Do not use abrasive cleaners
on glass. Never clean the glass
when it is hot.

• During start-up, it is normal for condensa­tion to form on the inside of the glass (this
condensation and fog will usually disappear
in a few minutes). The moisture can cause
lint, dust and other airborne particles to cling
to the glass surface.

• Initial curing of the high temperature paint
and burning off of lubricants used in the
manufacturing process may result in a fi lm
on the glass.

• A white coating may form on the glass
as a result 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. The
following cleaning solutions are approved for
use to clean glass:

• Non-ammonia based household cleaner

• 50%-50% mix of white vinegar & water

• gas fi replace/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 fi rmly.

Clean Logs And Burner

Carefully remove the logs (use care when han­dling the fi ber logs, as they become quite fragile
after curing). Vacuum out any foreign matter
(lint, carbon, etc.) on the burner. Ensure the
burner ports are “open.” Remove any carbon
deposits from the under side of the logs using
a vacuum cleaner, or a soft bristled brush (i.e.
paint brush). Note: Improper positioning of
logs can create carbon build-up and will alter
the performance of the appliance.

Replacing Logs -

If the logs become damaged by accident or
improper handling and need replacement, use
only the proper replacement logs from manufac­turer (see Page 24 for ordering information).

Re-Install Embers, Logs and Vermiculite

- Carefully follow placement instructions on

Pages 8 to 10). All logs should fi t onto cor­responding pins and/or log stoppers. This will
ensure a proper fl ame and safe combustion.

Inspect Wiring

Refer to wiring diagrams on Page 12.

WARNING

Label all wires prior to discon­nection when servicing con­trols. Wiring errors can cause
improper and dangerous opera­tion. Verify proper operation
after servicing.

Inspect and clean all wire connections. Ensure
that there is no melting or damage. Inspection
should include:

• Terminals at the Valve

• OFF/ON Switch

• (Optional Control Switch) Wall Thermostat,
Remote Control or Remote Wall Switch Kit

Inspect Burner Flame Appearance

Ensure that the burner flame appearance
resembles the fl ame shown in Figure 13 and
as described in Flame Appearance and Sooting
on Page 10. The Homeowner must contact
a qualifi ed service technician at once if any
abnormal condition is observed.

Small Area Paint Touch-up

The fi nish of the appliance is a high qual­ity powdercoat. Only use factory supplied
powdercoat paint kit for touch-ups. Paint is
available at your local authorized Lennox Hearth
Products dealer , cat. no. 90L74. Never attempt
to paint a hot fi replace.

Do not attempt to repaint the appliance until the
fi nish is completely cured (see Burn-In Period
on Page 4). If the surface later becomes stained
or marred, it may be lightly sanded and touched
up with spray paint.

6

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Front Glass Enclosure Panel, Removal
and Installation

WARNING

Do not operate appliance with the
glass front removed, cracked or
broken. Replacement of the glass
should be done by a licensed or
qualifi ed service technician.

WARNING

Do not attempt to substitute the
materials used on this door, or
replace cracked or broken glass
with any materials other than
those provided by the appliance
manufacturer.

WARNING

Handle this glass with extreme
care! Tempered glass is suscep­tible to damage – do not scratch
or handle roughly while rein­stalling the glass door frame.

These are direct-vent appliances. They are
designed to operate only when the front glass
enclosure panel is installed. Generally the front
glass enclosure panel should not be removed
except to gain access to the components within
the fi rebox, and the appliance may only be oper­ated without the front glass enclosure panel
in place for very brief periods of time during
appliance checkout and adjustment. Note: The
fl ame appearance will be diminished while the
front glass enclosure panel is removed.

During this appliance checkout and adjust­ment period, a potential safety hazard exists

- EXERCISE EXTREME CAUTION to prevent
the occurrence of any burn injuries from the
exposed fl ames or hot sur faces. Also note, that
while the front glass enclosure panel (or any of
the panels) is removed, the fl ame appearance
will appear to be smaller than normal.

Lower Compartment
Door and Hinge

Top Flange on

Glass Door

Glass Door

Removing Glass Enclosure Panels
(see Figure 4)

1. Remove the top louver assembly or radiant

panel by pulling it out and off.

2. Open the control compartment access panel.
by actuating the spring-loaded magnetic
catches securing the panel (gently depress the
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-fl ange 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.

4. Swing the bottom of the door out and raise
it slightly to lift the top fl ange of the door
frame away from the appliance.

Installing Glass Enclosure Panels
(see Figure 4)

1. Visually inspect the gasket on the backside of

the panels. The gasket surface must be clean,
free of irregularities and seated fi rmly.

WARNING

Do not attempt to touch the front
enclosure glass with your hands
while the fi replace is in use.

WARNING

The glass door of this appli­ance must only be replaced as a
complete unit as provided by the
manufacturer. Do not attempt to
replace broken, cracked or chipped
glass separately.

Bottom Vee-fl ange

Glass Door

Glass Door Latch

Firebox Floor

Figure 4 - INSTALLING GLASS DOOR

2. Position the glass enclosure panel in front of

the fi rebox opening at a 45 degree angle and
engage the top fl ange over the lip at the top
of the fi rebox opening. See Figure 4.

3. Swing the glass enclosure panel down and
back. Ensure the gasket seats evenly as the
panel draws shut. Engage the Vee-fl ange 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.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

7

INSTALL GRATE, VERMICULITE, GLOWING EMBERS AND LOGS

LOG SET - IDENTIFICATION

LOG SET

Catalog Number

* Item

A

B

C

D

E

F

* Item "letters" above correspond to photos on right

REFERENCE

Firebox Accessories / Parts

Cat. No. Model No. Description

88L53 FGE Bag of Glowing Embers

H3696

H3210

Description

Log, Center

Log, Left Rear

Log, Left Front

Log, Right Rear

Log, Top Center

Log, Front Center

(1 oz. rockwool)

Vermiculite, Bag (2 liters)

Bottom View of Logs (in packaging)

C

A

B

F

D

E

Top View of Logs

B

E

WARNING

The size and position of the log
set was engineered to give the
appliance a safe, reliable and
attractive fl ame pattern. Any
attempt to use a different log
set in the fi replace will void
the warranty and will result in
incomplete combustion, soot­ing, and poor fl ame quality.

Glowing Embers

Separate into Quarter

Size (separate) Pieces

Bag of Glowing

Embers (rockwool)

D

A

C

F

Top View of Logs - Installed

B

D

E

C

Figure 5

8

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

(Valve Access Side)

F

A

READ LOG WARNINGS ON PAGE 10 BEFORE PROCEEDING

8. Place Log (B) as shown in Figure 8.

1. Remove front glass enclosure panel from appliance.
a. Open Control Compartment Access Panel (see Control Compart-

ment Access Instructions on Page 4.).

b. Remove the glass panel enclosure (see Removing Glass Enclosure

Panel instructions on Page 7.

2. Remove the following from fi rebox; log set, embers (rockwool) and

vermiculite. Handle logs carefully to prevent breakage.

3. Ensure the Grate is properly installed in the fi rebox with the 4 legs

of the grate fi tting into the 4 dimples on the fi rebox fl oor.

4. Install Vermiculite - Place some vermiculite on the fi rebox fl oor around

the grate (the entire bag of vermiculite will NOT be used). See Figure 13

on Page 10. DO NOT PLACE ANY VERMICULITE ON THE BURNER.

6. Placement of Glowing Embers -

Separate the Embers (rockwool) into pieces about the size of a quarter

(see Figure 5 on Page 8). Keep the pieces fl uffed up, not matted.
Distribute these pieces over the surface of the burner, as shown in
Figure 6. Do not use more than is necessary. Ensure that the main
burner ports remain uncovered by the ember material.

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).

Place Embers on burner as shown.

Position Log (B) Against The Back Of
The Grate Here

B

Position Groove at The Bottom Of Log (B) Over The Grate
Here And Slide It Against The Back Of The Grate

Figure 8

9. Place Log (C) as shown in Figure 9.

(Valve Access Side)

Log (C) Lays Over Logs (A) and (B)

Figure 6

DO NOT PLACE EMBERS OVER
GAS PORTS / AREAS CIRCLED

7. Place Log (A) on the grate as shown in Figure 7.

A

B

C

Position The Groove in The Back of Log (C)

Figure 9

Against The Grate

10. Place Log (D) as shown in Figure 10.

Position And Slide Log (D) Against The

The Grate

Back Of

A

A

(Valve Access Side)

Position Groove At The Bottom Of
Log (A) Over The Log Support Here

Figure 7

Position The Groove At The Bottom Of
Log (A) Over The Grate And Slide It
Forward Against The Grate Here

(Valve Access Side)

(Valve Access Side)

Figure 10

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

D

Place Log (D) Over The
Flat Spot On Log (A)

Here

9

10. Place Log (E) as shown in Figure 11.

Position round end of log (E) against the notch of
log (D) here. Two charred spots face the front

E

D

C

Position Small End of
Log (E) on The Notch of
Log (C) Here

11. Place Log (F) as shown in Figure 12.

Log (F) sits in front of the grate

(Valve Access Side)

(Valve Access Side)

Figure 11

Figure 12

F

WARNING

Logs get very hot and will remain hot up to one hour after gas supply is
turned off. Handle only when logs are cool. Turn off all electricity to the
appliance before you install grate and logs.

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 fl ames. 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 fl ames and lack of combustion air entering the air shutter
opening. To achieve a warm yellowish-orange fl ame with an orange body that does not soot, the
shutter opening must be adjusted between these two extremes.

Air Shutter Adjustment Guidelines

• If there is smoke or soot present, fi rst check the log set positioning to ensure that the fl ames 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.

• 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 fl ames that appear blue
and transparent. These weak, blue and transparent fl ames are termed anemic.

• Propane models may exhibit fl ames which candle or appear stringy. If this is present and persists,
adjust the air shutter to a more closed position, then operate the appliance for a few more minutes
to ensure that the fl ame normalizes and the fl ames do not appear sooty.

Flame Appearance & Sooting

Proper fl ame appearance is a fl ame which is blue at the base and becomes yellowish-orange in
the body of the fl ame. When the appliance is fi rst lit, the entire fl ame may be blue and will gradu­ally turn yellowish-orange during the fi rst 15 minutes of operation. If after period the fl ame stays
lowered blue, or if the fl ame is orange with evidence of sooting (black tip), the air shutter opening
may need to be adjusted.

WARNING

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.

WARNING

If logs are not installed according
to the log installation instructions,
fl ame impingement and improper
combustion could occur and result
in soot and/or excessive produc­tion of carbon monoxide (CO), a
colorless, odorless, toxic gas.

WARNING

DO NOT attempt to install the logs
until the appliance installation has
been completed, the gas line con­nected and tested for leaks and the
initial burner operation has been
checked out.

Vermiculite

Figure 13 - Burner Flame Appearance

10

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

The following chart is provided to aid you in
achieving the correct air shutter adjustment
for your installation.

Air Shutter Adjustment Guidelines:

Amount of

Primary Air

If air shutter is
closed too far

If air shutter is
open too far

Flame

Color

Flame will
be orange

Flame will
be blue

WARNING

Air Shutter

Adjustment

Air shutter
gap should be
increased

Air shutter
gap should be
decreased

Air shutter adjustment should
only be performed by a qualifi ed
professional service technician.

2. Light appliance (follow lighting procedure on

lighting label in control compartment or see
homeowners manual).

3. Allow the burner to operate for at least 15 min-

utes while observing the fl ame continuously
to ensure that the proper fl ame appearance
has been achieved (see Figure 13). If the
following conditions are present, adjust
accordingly.

• If flame appears weak or sooty, adjust
the air shutter, incrementally, to a more
open position until the proper fl ame
appearance is achieved.

• If fl ame stays lowered blue, adjust the
air shutter, incrementally, to a more
closed position until the proper fl ame
appearance is achieved.

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 satisfi ed that the burner fl ame appear-

ance is normal, close the lower control
compartment door.

MILLIVOLT PILOT ASSEMBLY

Proper Pilot Flame Appearance

Hood

Thermocouple

Pilot
Nozzels

Thermopile

Figure 15

Electronic Appliance Checkout

Igniter Rod

3/8" Min.

(9 mm)

WARNING

Ensure front glass panels are in
place and sealed during adjust­ment.

CAUTION

The air shutter door and nearby
appliance surfaces are hot. Exer­cise caution to avoid injury while
adjusting fl ame appearance.

CAUTION

Carbon will be produced if the air
shutter is closed too much. Any
damage due to carboning result­ing from improperly setting the
air shutter is not covered under
the warranty.

Burner Air Shutter Adjustment Procedure

1. Locate adjustment rod and adjust air shutter

to the standard setting as shown in Figure
14 (adjustment rod is located in the lower

control compartment). Note: Rotating the
adjustment rod counterclockwise decreases
air and clockwise increases air.

Decrease Shutter Opening
In This Direction

Air Shutter
Adjusting
Rod

Model Natural

MPD35ST

Figure 14

Millivolt Appliance Checkout

The pilot fl ame should be steady, not lifting
or fl oating. Flame should be blue in color with
traces of orange at the outer edge.

The top 3/8" (10 mm) at the pilot generator
(thermopile) and the top 1/8" minimum (tip)
of the quick drop out thermocouple should be
engulfed in the pilot fl ame. The fl ame should
project 1" (25 mm) beyond the hood at all three
ports. See Figure 15.

To light the burner, refer to the lighting instruc­tions on Page 17.

Increase Shutter Opening
In This Direction

Ref. Air shutter Patent:
U.S. Pat. 5,553,603

Main Burner Factory Air Shutter

Opening Setting - All Models

Gas

1/8”

3.2mm

Adjustment Rod Positions
(when viewed from above)

Note - Burners are

omitted in this

view for clarity.

Orifi ce

Propane

Gas

1/4”

6.4mm

To light the burner, refer to the lighting instruc­tions on Page 19. Ensure the igniter lights the
pilot. The pilot fl ame should engulf the fl ame
sensor as shown in Figure 16.

ELECTRONIC PILOT ASSEMBLY

Proper Pilot Flame Appearance

Proper Flame

Adjustment

Pilot
Nozzels

Figure 16

With proper care and maintenance, your appli­ance will provide many years of enjoyment. If
you should experience any problem, fi rst refer
to the troubleshooting guide in this manual.
If problem persists, contact your Lennox
distributor.

3/8" to 1/2"
(9 -13 mm)

Ground

Electrode

Flame Rod

Hot Surface

Igniter

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

11

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 con-

Electronic Wiring Diagram (Honeywell) Showing Blower Wiring for Optional FBK-100, FBK-200 & FBK-250 Kits

Auxiliary View A
J-Box Wiring when
using unit mounted
relay module.

Pilot Burner
Assembly

BK
W

G

Junction Box

Relay Module C/W FBK-250 only. Plug blower
into J-Box receptacle for FBK-100 or FBK-200
application. View A for J-Box wiring.

C
AV

02
1

*OFF/ON Switch
(Integral with
Gas Valve)

Schematic Representation Only

Optional Blower

trols. Wiring errors can cause
improper and dangerous appli­ance operation.

Millivolt Wiring Diagram

Schematic Representation Only

If any of the original wire as supplied must
be replaced, it must be replaced with Type
AWM105 C - 18 gage wire.

TH

TP

TP

TH

Thermopile

*Opt.
Switch

Field Wired

Standard OFF/ON Switch

Factory
Wired

* Optional Kits Installed - OFF/ON wall switch,
wall thermostat or remote control receiver.
Note: Turn the appliance-mounted OFF/ON
burner control switch to the OFF position if
any of these kits are installed.

Figure 17

Your Fireplace's Model Number ________________________________________

BL

BL

BK

Optional Control Switch

Figure 18

WARRANTY

Your gas appliance is covered by a limited
twenty year warranty. You will fi nd a copy
of the warranty accompanying this manual.
Please read the warranty to be familiar with
its coverage.

Retain this manual. File it with your other
documents for future reference.

PRODUCT REFERENCE INFORMATION

We recommend that you record the following
important information about your fi replace.
Please contact your Lennox dealer for any
questions or concerns. For the number of
your nearest Lennox dealer, please call 1-800­9-LENNOX

Igniter
Connector

Honeywell
Electronic
Gas
Valve

BK

BL

R

BK = BLACK BL = BLUE

BK

R = RED W = WHITE

W

G = GREEN

Transformer

24 V

Secondary

Wall Mounted Blower Speed Control Switch or
ON/OFF Switch for Blower Kit (optional)

Outlet Box Green
Ground Screw

BK

120

W

VAC

G

G

Break off Tab

Junction
Box

White Wire
to Opposite
Side (neutral)

GROUND

120 VAC
Primary

Field Wired
Factory

Wired

Hot side
of Outlet

* Leave the OFF/ON switch, which is
integral with the gas valve, in the ON
position.
** Optional Control Switches: Wall
Switch, Wall Thermostat or Remote
Control Receiver.

Notes:

1. If any of the original wire as supplied
must be replaced, use Type AWM 105°C

- 18 gage wire ONLY.

2. 120 VAC, 60 Hz - Less than 3 Amps.
Caution: label all wires prior to
disconnection when servicing controls.
Wiring errors can cause improper and
dangerous operation.

REPLACEMENT PARTS

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. Parts will be
shipped at prevailing prices at time of order.

When ordering repair parts, always give the
following information:

1. The model number of the appliance.

2. The serial number of the appliance.

3. The part number.

4. The description of the part.

5. The quantity required.

6. The installation date of the appliance.

If you encounter any problems or have any ques­tions concerning the installation or application
of this system, please contact your distributor,
or Lennox directly:

BK

R

Your Fireplace's Serial Number ________________________________________

The Date On Which Your Fireplace Was Installed ___________________________

The Type of Gas Your Fireplace Uses ____________________________________

Your Dealer's Name ________________________________________________

12

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

LENNOX HEARTH PRODUCTS
1110 West Taft Avenue
Orange, CA 92865

visit us at www.Lennox.com

ACCESSORY COMPONENTS

Product Reference Information

Cat. No. Model Ship.

Weight

H3201 MPD35ST-NM 220 lbs 46W x 26D x

H3202 MPD35ST-PM 220 lbs 46W x 26D x

H3203 MPD35ST-NE 220 lbs 46W x 26D x

Ship.

Volumn

43H (30 cu.ft.)

43H (30 cu.ft.)

43H (30 cu.ft.)









Wall Thermostat, Millivolt

Cat. No. Model No. Description

89L36 WTK Wall Thermostat Kit,













White

Wall Thermostat

The wall thermostat kit provides temperature control
for optimum comfort.

Remote Control Kit, Standard

Cat. No. Model No. Description

H0249 RCL 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
fi replace. 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.

The transmitter has ON and OFF functions that are
activated by pressing either button on the face of
the transmitter. When a button on the transmitter
is pressed, a signal light illuminates briefl y to verify
that a signal has been sent.

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 gas or propane gas appliances. The RCL
offers ease of installation and allows you to execute
on-off commands to the fi replace effortlessly with
one simple motion.

The Model RCL comes complete with detailed operat­ing instructions.

Remote Control Kit, Deluxe

Cat. No. Model No. Description

H0251 RCL-STAT Remote Control System

(Deluxe)

(ref. Form # 750,129M)

Deluxe 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 enhancements, including; battery
power level indicator, timer, mode of operation,
thermostatic display including room temperature in
either metric of English units, fl ame indicator and
clock. Fully programmable, the Model RCL-T allows
for virtual command over nearly all operational and
temperature variables, using the hand held remote
control transmitter.

The Model RCL-T (Deluxe) remote control system
is installed in the same manner as the standard
system, may be operated with electronic and mil­livolt systems with either natural gas or propane gas.
The RCL-T comes complete with detailed operating
instructions.

White Wall Switch Kit

Cat. No. Model No. Description

85L87 FWSK OFF/ON Wall Switch Kit

OFF/ON Wall Switch Kit

The OFF/ON wall switch kit may be used to control

the operation of the fi replace burner. Install the
OFF/ON wall switch in a convenient location near
the fi replace.

Forced Air Kit

The FBK-100 blower provides constant velocity 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 unit-mountable switch, also provides
variable speed forced air circulation.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Forced Air Blower Kits

Cat.

Model No. Description

No.

80L84 FBK-100 Blower, Standard

80L85 FBK-200 Blower, Variable Speed

80L86 FBK-250 Blower, Variable Speed

94L89 FBK-100-36 Blower, Standard, 36 Pack

94L90 FBK-200-36 Blower Kit - Variable Speed

H0543 FBK-250-36 Blower Kit - Variable Speed

(ref. Form # 750,028M & 750,029M)

(single speed)

(w/wall-mounted switch)

(w/unit-mounted switch)

with Wall Switch 36 Pack

with Thermo Snap Switch
36 Pack

13

ACCESSORY COMPONENTS

Arch Pane
Design

Square
Pane
Design

Arch
Design

Square
Design

Note: Door & Trim Kits are for 1 side only. If set is desired, order 2 kits.

Decorative Arch Screen Panel Kit

This easy to install optional screen installs over the
standard glass enclosure panel to provide protection
from direct contact with the hot glass surface. These
screen panels cannot be used in conjunction with
the arch door kits or door frame kits.

Decorative Arch Screen Panel Kit

Cat. No. Model Description

H3593 DASPK35TI 35” Dec. Arch Screen Panel

(ref. Form # 750,199M)

Tall Style View Doors

These decorative screen doors are offered in four
attractive fi nishes and fi t on the face of the appliance
over the glass doorframe to prevent direct contact
with the hot glass surface. These doors replace
the bottom louver assembly and cover the control
compartment which elongates the appearance of the
height of the fi replace face.

Style View Tall Arch 35" Pane Screen Door Kits

Cat. No. Model Description

H3525 TAPD35C Arch Pane, Charcoal

H3527 TAPD35SP Arch Pane, Satin Pewter

(ref. Form # 750,200M)

Style View Screen Doors -

These Style View screen 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 screens prevent direct contact with the
hot glass surface. The door includes heavy duty
magnet door latches and functional twin-pane
screen doors.

Arch Pane Design Kits

Cat. No. Model Description

H0930 APD35C 35” Arch Pane Doors, Char.

H0931 APD35TI 35” Arch Pane Doors, Text. Iron

H0932 APD35SP 35” Arch Pane Doors, Satin Pew.

H0933 APD35AB 35” Arch Pane Doors, Ant. Brass

Arch Design Kits

H0858 AD35C 35” Arch Doors, Charcoal

H0859 AD35TI 35” Arch Doors, Textured Iron

H0860 AD35SP 35” Arch Doors, Satin Pewter

H0861 AD35AB 35” Arch Doors, Antique Brass

Square Design Kits

H0946 SD35C 35” Sq. Doors, Charcoal

H0947 SD35TI 35” Sq. Doors, Textured Iron

H0948 SD35SP 35” Sq. Doors, Satin Pewter

H0949 SD35AB 35” Sq. Doors, Antique Brass

* 35" Screen Heat Guard Kit

Cat. No. Model No. Description

26M48 HG35M 35" Screen Heat Guard Kit

* Order 2 for set if desired.

(ref. Form # 750,101M)

Screen Heat Guard Kit

This easy to install optional screen heat guard installs
over the standard glass enclosure panel to prevent
contact with the hot glass surface. These screen
heat guard panels cannot be used 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).

Clean Face Charcoal Radiant Panel Kits

Cat. No. Model No. Description

88L36 RAD35C-2 Clean Face Panel Kit

(ref. Form # 504,223M)

Clean Face Panel Kits

Clean faced panel kits are available to convert the stan­dard louvered fi replaces to radiant models which are
more suited for fi nishing around the fi rebox opening
with non-combustible materials, such as tile.

Brickaded Wall Liner Kits

Cat. No. Model No. Description

H3207 MBLK-35ST Interior Brick Liner Kit

(ref. Form # 750,160M)

14

Square Pane Design Kits

H0962 SPD35C 35” Sq. Pane Doors, Char.

H0963 SPD35TI 35” Sq. Pane Doors, Text. Iron

H0964 SPD35SP 35” Sq. Pane Doors, Satin Pew.

H0965 SPD35AB 35” Sq. Pane Doors, Ant. Brass

(ref. Form # 775,169M)

Brickaded Panel Liner Kit

The brickaded liner kits include ceramic panels as
shown here. The panels have brick-like features
in relief.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

ACCESSORY COMPONENTS

4 Piece Trim Kit

Cat. No. Model No. Description

96K17 TK35PB4 35” 4 Piece Finish Trim Kit,

Polished Brass

(ref. Form # ii-9299)

Note: Door & Trim Kits are for 1 side only. If set is desired, order 2 kits.

Sunrise Style (upper grille shown)

Crescent Style (lower grille shown)

Cat. No.# Model Description Model Series

H3565 SUGK35C 35” Charcoal

H3567 SUGK35SP 35” Satin Pewter

UPPER GRILLE KITS

SUNRISE

3 Piece Trim Kit

Cat. No. Model No. Description

96K21 TK35PB3 35” 3 Piece Finish Trim Kit,

Polished Brass

H4821 TK35C3 35” 3 Piece Finish Trim Kit,

Charcoal

(ref. Form # 750,147M)

Polished Brass Trim Kit

This kit contains brass trim pieces used to fi nish the
gaps between the wall board and the fi replace, provid­ing the appliance a brass perimeter highlight. This kit
contains the trim pieces and these instructions.

H3541 CUGK35C 35” Charcoal

H3543 CUGK35SP 35” Satin Pewter

H3569 SLGK35C 35” Charcoal

H3571 SLGK35SP 35” Satin Pewter

H3545 CLGK35C 35” Charcoal

H3547 CLGK35SP 35” Satin Pewter

(ref. Form # 750,202M)

UPPER GRILLE KITS

CRESCENTS

LOWER GRILLE KITS

SUNRISE

LOWER GRILLE KITS

CRESCENTS

Decorative Grille Kits

These decorative grilles are offered in two attractive fi nishes and fi t on the
face of the appliance in place of the standard louvers.

2 Piece Trim Kit

Cat. No. Model No. Description

26M88 2DFK35PB 35” Door Trim Kit, Polished

Brass (2 Piece, Top and
Bottom)

26M91 2DFK35BS 35” Door Trim Kit, Brushed

Stainless (2 Piece, Top and
Bottom)

(ref. Form # 750,098M)

2-Piece Door Frame Kits

These kits are designed to attach directly to the front
face of the appliance at the glass enclosure panel’s
top and bottom edges.

2-Piece Louver Kits

Cat. No. Model No. Description

96L05 2LVR35PB

96L09 2LVR35BS

(ref. Form # 504,224M)

2 Pc. Louver Kit,
Polished Brass

2 Pc. Louver Kit,
Brushed Stainless

2-Piece Polished Brass and Brushed Stainless
Louvers 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 retrofi tted to
previously installed appliances.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

35" Assembled Louver Kits

Cat. No. Model No. Description

88L28 LVR35PB-2

88L32 LVR35BS-2

(ref. Form # 750,119M)

Louver Kit, Polished
Brass

Louver Kit, Brushed
Stainless

Polished Brass & Brushed Stainless Louvers Kits

Decorative louvers are available for use with all
Multi-Open Series appliances.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 retrofi tted to
previously installed appliances.

15

ACCESSORY COMPONENTS

* 35" Eyebrow Hood Kits

Cat. No. Model No. Description

96K67 EB35PB

88L49 EB35BS

* These hood kits replace the standard hood that
comes with these fi replaces.

(ref. Form #504,142M)

Polished Brass & Brushed Stainless Hood Kits

Attractive hoods are available in two styles to be used
on the Multi-Open Series appliances. These hoods
are designed to be fi tted to the glass viewing sides of
the appliance. In addition to providing an aesthetically
pleasing appearance to your appliance installation,
the hood reduces heat effects to decorative mantles
and fi nish materials located above the fi replace
opening. The hood kit replaces the standard hood
that comes with these appliances and snaps into
place. These kits can be retrofi tted to previously
installed appliances.

Hood Kit, Polished
Brass

Hood Kit, Brushed
Stainless

* 35" Arch Door Kits

Cat. No. Model No. Description

26M43 ADK35CMPB Arch Door, Polished Brass

26M44 ADK35CMBS Arch Door, Brushed Stainless

* Order 2 for set if desired.

(ref. Form # 750,021M)

Arch Door Kits

Two types of arch door kits are available for the Multi­Open 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 retrofi tted to
previously installed Multi-Open Series appliances. The
decorative arch kits can not be used in conjunction
with the screen panel kit.

Touch-Up Paint Kits

Cat. No. Model No. Description

90L74 TPK-C Touch-Up Paint (Charcoal)

98K67 TPK-T Touch-Up Paint (Tan)

P

T

A

N

I

(TPK-C ref. Form # 504,216M)

Touch-Up Paint Kit

Repair of minor scratches and discoloration of the
appliance charcoal painted surfaces may be accom­plished with the touch-up paint kit.

4 Piece Door Trim Kits

Cat. No. Model No. Description

26M82 4DFK35PB Door Trim, Polished Brass

26M85 4DFK35BS Door Trim, Brushed Stainless

(ref. Form # 750,098M)

Door Frame 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 four edges of
the glass enclosure panel resulting in the appearance
of a picture frame.

Decorative Firebox Accessories

Cat. No. Model No. Description

88L53 FGE Bag of Glowing Embers

80L42 FDVS

(FDVS ref. Form #750,010M)

(1 oz. rockwool)

Bag of Decorative
Volcanic Stone

Bag of Glowing Embers
Bag of Volcanic Stone

Replacement ember materials or volcanic stone are
available for use with these appliances. Order kits as
part of the periodic maintenance of the appliance.

16

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

LIGHTING INSTRUCTIONS – MILLIVOLT GAS VALVE

it

OUT

IN

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.

B. BEFORE OPERATING smell all around the appliance area for

gas. Ensure to smell next to the fl oor because some gas is
heavier than air and will settle on the fl oor.

WHAT TO DO IF YOU SMELL GAS

• Extinguish any open fl ame.

• Open windows.

• Do not light any appliance.

• Do not touch any electrical switches.

LIGHTING INSTRUCTIONS

1. STOP! Read the safety information above on this page.

2. Access the lower control compartment.

3. Turn OFF/ON switch to “OFF” (and remote wall switch, if appli-

cable).

4. Verify main line shut-off valve is open.

5. Push in gas control knob slightly and turn clockwise

to “OFF.”

SIT Millivolt Gas Valve

IN

PIEZO

IGNITER

OUT

F

F

O

P

I

L

it

O

T

O

N

GAS CONTROL
KNOB

TP/TH

TP

TH

TPTH TP TH

BURNER

OFF/ON SWITCH

I

H

L

W

O

P

I

L

O

T

- LO / HI +

• 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 fi re depart-

ment.

C. Use only your hand to push in or turn the gas control knob.

Never use tools. If the knob will not push in or turn by hand,
do not try to repair it, call a qualifi ed service technician. Force
or attempted repair may result in a fi re or an explosion.

D. Do not use this appliance if any part has been under water.

Immediately call a qualifi ed service technician to inspect the
appliance and to replace any part of the control system and
any gas control which has been under water.

6. Wait fi ve (5) minutes to clear out any gas. If you then smell gas,

STOP! Follow “B” in the safety information above on this page. If you
do not smell gas, go to the next step.

7. Push in gas control knob slightly and turn counterclockwise

to “PILOT.”

8. Push in control knob all the way and hold in. Immediately light the

pilot by triggering the spark igniter (pushing the button) until pilot
lights. Continue to hold the control knob in for about 1 1/2 minutes
after the pilot is lit. Release knob and it will pop back up. Pilot should
remain lit. If it goes out, repeat steps 5 through 8.

• If knob does not pop up when released, stop

and immediately call your service technician
or gas supplier.

• If pilot will not stay lit after several tries,
turn the control knob to “OFF” and call
your service technician or gas supplier.

Millivolt Pilot

9. Turn gas control knob counterclockwise
to “ON.”

10. Close lower control compartment.

ON

OFF

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

normal service.

2. For complete shutdown, turn remote wall switch to “OFF.”

3. Access the lower control compartment.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

4. Depress gas control knob slightly and turn clockwise

to “OFF.” Do not force.

5. Close lower control compartment.

17

INSTRUCTIONS D’ALLUMAGE – VANNE GAZ MILLIVOLT

it

OUT

IN

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: Ensurez-vous que vous ne détectez aucune odeur

de gaz autour de l’apareil ainsi que près du sol; certains gaz, étant plus
lourds que l’air, descendent au niveau du sol.

VOICI CE QUE VOUS DEVEZ FAIRE SI VOUS DÉCELEZ UNE ODEUR

DE GAZ:

• Éteignez toute fl amme visible.

• Ouvrez les fenêtres.

• N’allumez aucun appareil.

• Ne touchez à aucun commutateur électrique.

• Ne vous servez d’aucun téléphone dans votre édifi ce.

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. Ensurez-vous que la soupape d’arrêt de la canalisation principale est

ouverte.

5. Enfoncez légèrement le bouton de réglage du gaz et tournez-le dans

le sens des aiguilles d’une montre jusqu’à la position
d’arrêt “OFF”.

TP/TH

TPTH TP TH

TP

TH

SIT Vanne Gaz Millivolt

I

L

O

P

I

L

O

T

- LO / HI + (COMMANDE
DE TAILLE DE FLAMME)

Interrupteur

(OFF/ON)

H

W

BOUTON DE RÉGLAGE DU GAZ

ALLUMEUR

IN

OUT

F

F

O

P

I

L

it

O

T

O

N

• Appelez immédiatement votre compagnie de gaz en utilisant le télé-

phone du voisin.

• S’il vous est impossible de contacter votre compagnie de gaz, appelez

le service des incendies.

C. N’utilisez que votre main pour manipuler le bouton de réglage du gaz.

N’utilisez jamais d’outils. Si le bouton refuse de tourner ou de bouger,
n’essayez pas de le réparer. Communiquez immédiatement avec un
technicien de service qualifi é. 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.

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’enfl amme. Continuez de tenir le bouton de réglage enfoncé
pendant environ 90 secondes après l’allumage de la veilleuse.
Relâchez le bouton et il sortira subitement. La veilleuse devrait
rester allumée. Si elle s’éteint, répétez les étapes 5 à 8 inclusive­ment.

• Si le bouton ne sort pas automatiquement après avoir été relâché,

arrêtez immédiatement et téléphonez à votre technicien de service
ou à votre fournisseur de gaz.

• Si la veilleuse refuse de rester allumée après plusieurs tentatives,

tournez le bouton de réglage jusqu’à sa position d’arrêt “OFF” et
téléphonez à votre technicien de service ou à votre fournisseur de
gaz.

9. Tournez le bouton de réglage du gaz en sens inverse des aiguilles

d’une montre jusqu’à sa position de marche “ON”.

18

ON

OFF

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.

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

restera allumée jusqu’au retour du service normal.

2. Pour une fermeture complète, tournez l’interrupteur mural à la posi-

tion d’arrêt “OFF”.

3. Ouvrez le compartiment de contrôle du bas.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

10. Fermez le compartiment de contrôle du bas.

11. Au besoin, rebrancher l’appareil au

courant électrique et remettre

Millivolt Pilot

l’interrupteur du brûleur principal
à la position “ON” ou régler le
0thermostat à la température désirée.

12. Si l’appareil ne fonctionne pas,
suivre les instructions intitulées
“Pour fermer le gaz qui alimente
l’appareil” et appeler un technicien
ou le fournisseur de gaz.

4. Enfoncez légèrement le bouton de réglage du gaz et tournez-le dans

le sens des aiguilles d’une montre jusqu’à la position
d’arrêt “OFF”. Ne forcez pas le bouton.

5. Fermez le compartiment de contrôle du bas.

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

exactly.

B. BEFORE OPERATING smell all around the appliance area

for gas. Be sure to smell next to the fl oor because some
gas is heavier than air and will settle on the fl oor.

WHAT TO DO IF YOU SMELL GAS

• Extinguish any open fl ame.

• Open windows.

• 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.”

3. Open lower control compartment door.

4. Verify main line shut-off valve is open.

Honeywell Electronic Gas Control Valve

ON / OFF Switch

C
O
N
T
R

NO

O

FFO

L

I

G
N
I

T
ER

Front View

NI

I
PS

• Immediately call your gas supplier from a neighbor’s

phone.

• If your gas supplier cannot be reached, call the fi re

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 qualifi ed service technician. Force or
attempted repair may result in a fi re or an explosion.

D. Do not use this appliance if any part has been under

water. Immediately call a qualifi ed service technician
to inspect the appliance and to replace any part of the
control system and any gas control which has been under
water.

5. Turn the OFF/ON switch to “OFF”. Do not force.

6. Wait fi ve (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. Turn the OFF/ON switch to “ON”. Do not force.

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).

TO TURN OFF GAS TO APPLIANCE

1. For complete shut-down, turn remote wall switch to

“OFF.”

2. Open lower control compartment door.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

3. Turn the OFF/ON switch to “OFF”. Do not force.

4. Close the main line shut-off valve.

5. Close lower control compartment door.

19

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. Lorsque vous allumez l’appareil, suivez exactement ces instruc-

tions.

B. AVANT L’ALLUMAGE: Assurez-vous que vous ne détectez

aucune odeur de gaz autour de l’apareil ainsi que près du sol;
certains gaz, étant plus lourds que l’air, descendent au niveau
du sol.

VOICI CE QUE VOUS DEVEZ FAIRE SI VOUS DÉCELEZ UNE
ODEUR DE GAZ

• Éteignez toute fl amme visible.

• Ouvrez les fenêtres.

• N’allumez aucun appareil.

• Ne touchez à aucun commutateur électrique.

• Ne vous servez d’aucun téléphone dans votre édifi ce.

INSTRUCTIONS D’ALLUMAGE

1. ARRÊTEZ ! Lisez les consignes de sécurité au verso de cette

plaque.

2. Tournez l’interrupteur mural à la position d’arrêt “OFF”.

3. Ouvrez la porte du compartiment de contrôle du bas.

• Appelez immédiatement votre compagnie de gaz en utilisant

le téléphone 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 l'interrupteur

“OFF/ON” 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 qualifi é. Toute tentative pour forcer l’interrupteur
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.

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.

7. Tournez la manette de réglage du gaz jusqu’à la position de

marche “ON”. Ne la forcez pas.

20

4. Assurez-vous que la soupape d’arrêt de la canalisation principale

est ouverte.

5. Tournez la manette de réglage du gaz à la position d’arrêt

“OFF”.

Honeywell Vanne Gaz Électronique

Interrupteur ON / OFF

C
O
N
T
R

NO

O

FFO

L

I

G
N
I

T
ER

NI

SI
P

Vue de face

POUR FERMER LE GAZ QUI ALIMENTE L’APPAREIL

1. Pour une fermeture complète, tournez l’interrupteur mural à la

position d’arrêt “OFF”.

2. Ouvrez la porte du compartiment de contrôle du bas.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

8. Ouvrez le courant électrique (“ON”) qui alimente l’appareil

(interrupteur mural ou l'appareil).

9. Fermez la porte du compartiment de contrôle du bas.

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.

11. Si l’appareil ne se met pas en marche, suivre les instruc-

tions intitulées “Pour fermer le gaz qui alimente l’appareil” et
appeler un technicien ou le fournisseur de gaz.

POUR ÉTEINDRE L’APPAREIL

1. Coupez tout le courant électrique qui alimente l’appareil (inter-

rupteur mural).

3. Tournez la manette de réglage du gaz à la position d’arrêt “OFF”.

Ne la forcez pas.

4. Fermez la soupape d’arrêt de la canalisation principale.

5. Fermez la porte du compartiment de contrôle du bas.

MAINTENANCE SCHEDULE

Annually (Before the onset of the Burning Season)

MAINTENANCE TASK ACCOMPLISHING PERSON PROCEDURE

Inspecting/Cleaning Burner, Logs
and Controls

Check Flame Patterns and Flame
Height

Inspecting/Cleaning Pilot and Burner Qualifi ed Service Technician

Checking Vent System Qualifi ed Service Technician Inspect the vent system at the top and at the base (within the

Appliance Checkout Qualifi ed Service Technician Perform the appropriate appliance checkout procedure detailed

Replacing Rockwool Ember Materials Homeowner/Qualifi ed Service

Qualifi ed Service Technician Inspect valve and ensure it is properly operating. Check piping

Qualifi ed Service Technician

Technician

for leaks. Vacuum the control compartment, fi replace logs and
burner area.

Refer to Figure 13 on Page 10 and verify the fl ame pattern
and height displayed by the appliance conforms to the picture.
Flames must not impinge on the logs. Ensure fl ames are steady
(not lifting or fl oating).

Refer to Figures 15 & 16 on Page 11. Remove any surface
build-up on pilot and burner assembly. Wipe the pilot nozzles,
igniter/fl ame rod and hood. Ensure the pilot fl ame engulfs the
fl ame sensor as shown.

fi rebox) for signs of blockage or obstruction. Look for any signs
of dislocation or deterioration of the vent components. Note:
Excessive condensation can cause corrosion of caps, pipe &
fi ttings (excessive condensation can be caused by long lateral
runs, too many elbows and/or exterior portions of the system
being exposed to cold weather). Also inspect wall straps or
plumbers's tape to ensure it is secure and in place.

in this manual.

Remove old ember materials (rockwool) and vacuum the ember
placement area. Place new embers as described in Step 6 on
Page 9.

Periodically (After the Burning Season)

MAINTENANCE TASK ACCOMPLISHING PERSON PROCEDURE

Cleaning Firebox Interior Homeowner Carefully remove logs, rockwool, volcanic stone and vermiculite.

Check Flame Patterns and Flame
Height

Checking Vent System Homeowner Inspect the vent system at the top and at the base (within the

Cleaning Front Glass Enclosure Panel Homeowner Clean as necessary following the directions provided in this

Homeowner

Vacuum out interior of the fi rebox. Clean fi rebox walls and log
grate. Replace logs, Rockwool and volcanic stone as detailed
in this manual.

Refer to Figure 13 on Page 10 and verify the fl ame pattern
and height displayed by the appliance conforms to the picture.
Flames must not impinge on the logs.

fi rebox) for signs of blockage or obstruction. Look for any signs
of dislocation of the vent components.

manual. DO NOT TOUCH OR ATTEMPT TO CLEAN GLASS
WHILE HOT.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

21

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 qualifi ed service technician.

TROUBLESHOOTING GUIDE - MILLIVOLT GAS CONTROL SYSTEM

SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION

1. Spark igniter will not light pilot after

repeated triggering of igniter button.

2. Pilot will not stay lit after

carefully following the lighting
instructions.

3. Pilot burning, no gas to burner, Valve

knob “ON,” and the (standard) burner
OFF/ON switch is “ON." Read impor­tant note below.

IMPORTANT NOTE: If an optional

*remote switch is used for burner
operation, if the standard burner
OFF/ON switch is still installed on
appliance it must be in the "OFF"
position.

*Optional remote switch kits - wall

switch, wall thermostat or remote
control.

4. Frequent pilot/burner outage prob-

lem.

A. Defective igniter
(no spark at electrode).

B. Defective or misaligned electrode at pilot

(spark at electrode).

C. Gas supply pressure errant.

D. Pilot orifi ce plugged.
A. Defective pilot generator

(thermocouple).

A. Wall switch or wires defective.

B. Thermopile may not be generating suf-

fi cient millivolts.

C. Plugged burner orifi ce.
D. OFF/ON Switch & *Remote Switch are in

the "ON" position resulting in excessive
resistance.

A. Pilot fl ame may be too low or blowing (high)

causing the pilot/valve safety to drop out.

Check for spark at electrode and pilot; if no spark and
electrode wire is properly connected, replace igniter.

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 15 on Page 11).

Check inlet gas pressure. It should be within the limits
as marked on the rating plate.

Clean or replace pilot orifi ce.
Check pilot fl ame, it must impinge on thermocouple

(see Figure 15 on Page 11). Clean and/or adjust pilot
for maximum fl ame impingement on thermocouple.
Ensure that the connection between the valve and
thermocouple are tight and secure.

Check wall switch and wires for proper connections.
Jumper wire across terminals at wall switch, if burner
comes on, replace defective wall switch. If okay, jumper
wires across wall switch wires at valve, if burner comes
on, wires are faulty or connections are bad.

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
specifi ed minimum.

Check burner orifi ce for blockage and remove.
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 drain­age) and the burner may not come on.

Clean and/or adjust pilot fl ame for maximum fl ame
impingement on thermocouple (see Figure 15 on

Page 11).

TROUBLESHOOTING GUIDE - ELECTRONIC IGNITION SYSTEM

SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION

1. Burner will not light. A. Faulty Valve System.
B. “OFF/ON” or wall switch defective.

2. Burners come “ON,” then turns “OFF.” A. Burner orifi ce plugged.

B. Obstructed vent system.

22

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

See Below.
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.

Check main burner orifi ce(s) for blockage. Clean
or replace.

Check vent system for obstructions.

TROUBLESHOOTING PROCEDURE - ELECTRONIC IGNITION SYSTEM

START CHECK

• Turn Off Gas Supply.

• Ensure Valve Switch Is In ON Position.

• Disconnect Control Harness.

• Set Thermostat To Call For Heat.

Insert A

End View of Control Harness Connector

• Check for proper volt­age at control harness
(see insert A). Voltage

2

should be 24V between
thermostat or pressure
switch and 24V common
and 24V hot.

YES

• Plug control harness into
valve. Wait for internal check
delay.

NO

• Line voltage power

• Low voltage transformer

• Limit controller

• Thermostat

• Wiring

24 Volt Hot

Common

24 Volt

Switched

Check For Damaged or Missing
Terminals in Connector

Insert B

Igniter Terminals

24 Volt

• With pilot burner cable con-

1

• Igniter warms up and glows
red.

NO

nected, measure voltage at
valve HSI element output. 24V

2

nominal. (See insert B)

YES

YES • Replace igniter/fl ame rod

1

assembly.

YES

• Check that pilot gas is fl owing. Wait

• Turn on gas supply.

• Pilot burner lights.

NO

to ensure pilot gas tubing is purged.
Recycle call for heat if necessary.

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

YES

identify proper lead, this check must
be done with the valve control con­nected and igniter powered.

YES

• Replace Pilot Assembly.

• Check that pilot fl ame makes good
contact with pilot burner fl ame rod.

• Main valve opens and main
burner lights.

• Check for good electrical connection

NO

through the pilot tubing.

• If both of the above are good, replace
igniter/fl ame rod assembly.

YES YES

• System Is okay. • Cycle thermostat off and back on.

NO

• Replace valve.

NO

• Replace valve.

• Check transformer and

NO

line volt supply.

Igniter will cycle off and

1

back on once during the 90
second ignition trial. All
voltage measurements must
be taken while the igniter is
powered.

When measuring voltage

2

at connections, use care
to ensure terminals are
not damaged.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

• Main burner lights.

NO

• Replace valve.

23

REPLACEMENT PARTS - MPD35ST

Item Part/Cat.No. Qty Description Where Used

SIT Millivolt Only

1 H3357 1 Gas Train Assembly, NG, MV MPD35ST-NM
1 H3355 1 Gas Train Assembly, LP, MV MPD35ST-PM

Honeywell Electronic Only

2 H3356 1 Gas Train Assembly, NG, Elecrtr. MPD35ST-NE

3 42J32 1 Transformer

Misc. Replacement Parts

H3351

4

H3352

5

H3353

6

97K51

7

Brickaded Side Panels All

2

Burner, Pan All

1

* Electrical kit All

1

Eyebrow Panel All

2

8 93L32 1 Flex Line Gas Connector, FFGC All

H4864

9

2 Glass Enclosure Assembly All

10 H3696 Vermiculite, Bag of All

11 H3358 1 Grate Assembly All

12 69L21 4 Latch, Glass Enclosure Panel All

H3354

13

Note: Ordering information for Volcanic Stone, Glowing Embers and Touch-up Paint can be found on
Page 16

Firebox Sub-Floor All

1

MPD35ST-NE &

MPD35ST-PE

Item Part/Cat. Qty Description Where Used

Misc. Replacement Parts

H3210

14

15 H3726 2

16 H3734 1

1 Log Set All

Louver Assembly, Upper
Charcoal

Louver Assembly, Lower,
Charcoal (valve access side)

All

All

17 H3359 1 Louver Assembly, Lower, Char. All
18 69L31 2 Magnet, Latch, Spring-Loaded All

19 94326 2 Magnet All
20 H3740 8 Nailing Flange

All

21 12L15 2 Nameplate, Lennox All

24M10

22

1 Orifi ce, Burner, NG, #37 (.104") MPD35ST-NM &

MPD35ST-NE

42M79

22

23 91K94 1 Piezo Igniter (w/wire)

1 Orifice, Burner, LP, 1.55mm

(.061")

MPD35ST-PM &

MPD35ST-PE

MPD35ST-NM &

MPD35ST-PM
24 27K30 1 OFF/ON Switch, Rocker All
25 H3363 Vent Restrictor All

* 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.

4

7

15

7

10

25

20

6

13

5

15

9

11

16

21

12

18

19

22

1

24

23

9

17

22

2

14

8

3

8

Complete Log Set Available Only

Lennox Hearth Products reserves the right to make changes at any time, without notice,
in design, materials, specifi cations, prices and also to discontinue colors, styles and
products. Consult your local distributor for fi replace code information.

Printed in U.S.A. © 2005 by LENNOX HEARTH PRODUCTS

P/N 875,025M REV. A 05/2006

1110 West Taft Avenue • Orange, CA 92865