INSTALLATION INSTRUCTIONS
AVERTISSEMENT : Assurez-vous de bien suivre les
instructions données dans cette notice pour réduire au
minimum le risque d’incindie ou d’explosion ou pour
éviter tout dommage matériel, toute blessure ou la mort.
- Ne pas entreposer ni utilizer d’essence ni d’autres vapeurs
ou liquides inflammables dans le voisinage de cet appareil
ou de tout autre appareil.
- QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ :
• Ne pas tenter d’allumer d’appareil.
• Ne touchez à aucan interrupteur. Ne pas vous servir des
téléphones se trouvant dans le bâtiment où vous trouvez.
• Appelez immédiatement votre fournisseur de gaz depuis
un voisin. Suivez les instructions du fournisseur.
• Si vous ne pouvez rejoindre le fournisseur de gaz,
appelez le service des incindies.
- L’installation et l’entretien doivent être assurés par un
installateur ou un service d’entretien qualifié ou par le
fournisseur de gaz.
WARNING: If the information in these instructions
is not followed exactly, a fire or explosion may
result, causing property damage, personal injury,
or death.
-
vapors and liquids in the vicinity of this or any other
appliance.
- WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
•
department.
- Installation and service must be performed by a
WARNING /AVERTISSEMENT / AVISO
• HOT GLASS WILL CAUSE
BURNS.
• DO NOT TOUCH GLASS
UNTIL COOLED.
• NEVER ALLOW CHILDREN
TO TOUCH GLASS.
• UNE SURFACE VITRÉE CHAUDE
PEUT CAUSER DES BRÛLURES.
• LAISSER REFROIDIR LA SURFACE
VITRÉE AVANT D'Y TOUCHER.
• NE PERMETTEZ JAMAIS À UN ENFANT
DE TOUCHER LA SURFACE VITRÉE.
• EL VIDRIO CALIENTE
CAUSARÁ QUEMADURAS.
• USTED DEBE NUNCA
TOCAR EL VIDRIO CALIENTE.
• LOS NIÑOS DEBEN NUNCA
TOCAR EL VIDRIO.
MPB35ST B-Vent See-Through
Gas Fireplaces
P/N 850023M Rev. D 01/2011
This manual is one of a set of two supporting this product.
Refer to P/N 875024M for Care and Operation Instructions.
Ce manuel est disponible en francais, simplement
en faire la demande. Numéro de la pièce 850023CF.
MODELS
MILLIVOLT:
MPB35ST-NM-B
MPB35ST-PM-B
Portland
US
OTL Report No. 116-F-27-5
ELECTRONIC:
MPB35ST-NE-B
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
INSTALLATEUR : Laissez cette notice avec l'appareil.
CONSOMMATEUR : Conservez cette notice pour
consultation ultérieure.
This appliance may be installed in an aftermarket permanently located, manufactured home (USA only) or mobile
home, where not prohibited by local codes. 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.
TABLE OF CONTENTS
Packaging .........................................Page 2
Introduction ......................................Page 2
General Information ..........................Page 2
Massachusetts and New York
Requirements ................................Page 4
Cold Climate Insulation .....................Page 5
Manufactured Home Requirements ..Page 5
Location ............................................Page 5
Vent Termination Clearances ............Page 6
Appliance and Vent Clearances ........Page 7
Detailed Installation Steps ................Page 8
Typical Installation Sequence ...........Page 8
Step 1. Framing ...............................Page 8
Fireplace Specifications .....................Page 9
Step 2. Routing Gas Line ................Page 10
Step 3. Install the Venting System ..Page 11
Step 4. Field Wiring .........................Page 12
Step 5. Connecting Gas Line ...........Page 13
Step 6. Outside Air Kit Installation . . Page 14
Step 7. Verify Unit Operation ...........Page 15
Step 8. Install Grate, Vermiculite
Embers and Logs ...............Page 15
Step 9. Installing/Removing Glass
Enclosure Panels ................Page 18
Step 10. Burner Adjustment ..............Page 19
Step 11. Vent Operation Test and
Safety Limit Switch Operation Page 20
Step 12. Hood Installation .................Page 20
Finishing Requirements ....................Page 20
Step 13. Attaching Safety-in-
Operation Warnings .....................Page 21
Gas Conversion Kits .........................Page 22
PACKAGING
The assembled vented gas fireplace is packaged with:
1 - One log set, with one plastic bag of vermicu-
lite, is packaged in a carton located within
the firebox.
2 - One plastic bag of glowing embers located
in the control compartment.
3 - One envelope containing the literature
package, which consists of the care and
operation manual, installation instructions,
safety in operation warning labels, warranty,
8 nailing flanges; envelope is located in the
control area.
4 - Two hoods taped to the top of the fire-
place.
5 - One Grate, located in firebox.
6 - One Electrical Outlet Kit which 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.
7. Carton Support (must be removed from the
control area prior to first burning).
INTRODUCTION
The Millivolt appliances have a millivolt gas
control valve with piezo ignition system.
The Electronic appliances have an electronic
intermittent pilot ignition system. External
electrical power is required to operate these
units.
Use Only These Approved Vent Components
- These vented gas fireplaces are designed for
residential applications. They must be installed
with approved Type-B, 5 inch diameter double
wall vent pipe systems and a listed vent termination routed to the outside atmosphere.
GENERAL INFORMATION
WARNING
Young children should be carefully supervised when they are
in the same room as the appliance. Toddlers, young children
and others may be susceptible
to accidental contact burns. A
physical barrier is recommended
if there are at risk individuals in
the house. To restrict access to
a fireplace or stove, install an
adjustable safety gate to keep
toddlers, young children and
other at risk individuals out of
the room and away from hot
surfaces.
AVERTISSEMENT
Les jeunes enfants devraient être
surveillés étroitement lorsqu’ils
se trouvent dans la même pièce
que l’appareil. Les tout petits,
les jeunes enfants ou les adultes
peuvent subir des brûlures s’ils
viennent en contact avec la surface chaude. Il est recommandé
d’installer une barrière physique
si des personnes à risques habitent la maison. Pour empêcher
l’accès à un foyer ou à un poêle,
installez une barrière de sécurité; cette mesure empêchera les
tout petits, les jeunes enfants et
toute autre personne à risque
d’avoir accès à la pièce et aux
surfaces chaudes.
Please read and understand these
instructions before beginning your
installation.
WARNING
B-Vent appliances are not
designed to operate in negatively
pressured environments (pressure within the home is less than
pressures outside). Significant
negatively pressured environments caused by weather, home
design, or other devices may
impact the operation of these
appliances. Negative pressures may result in poor flame
appearance, sooting, damage to
property and/or severe personal
injury. Do not operate these
Children and adults should be alerted to the
hazards of high surface temperature and
should stay away to avoid burns or clothing
ignition.
Les enfants et les adultes devraient être informés des dangers que posent les températures
de surface élevées et se tenir à distance afin
d’éviter des brûlures ou que leurs vêtements
ne s’enflamment.
DO NOT ATTEMPT TO ALTER OR MODIFY
THE CONSTRUCTION OF THE APPLIANCE OR
ITS COMPONENTS. ANY MODIFICATION OR
ALTERATION MAY VOID THE WARRANTY, CERTIFICATION AND LISTINGS OF THIS UNIT.
appliances in negatively pressured environments.
2
WARNING
Improper installation, adjustment, alteration, service or
maintenance can cause injury
or property damage. Refer to
this manual. For assistance or
additional information consult
a qualified installer, service
agency or the gas supplier.
WARNING
Failure to comply with these
installation instructions will result
in an improperly installed and
operating appliance, voiding its
warranty. Any change to this appliance and/or its operating controls
is dangerous.
WARNING
Clothing or other flammable
material should not be placed
on or near the appliance.
AVERTISSEMENT
On ne devrait pas placer de
vêtements ni d’autres matières
inflammables sur l’appareil ni à
proximité.
WARNING
Any safety screen or guard
removed for servicing the appliance must be replaced prior to
operating the appliance.
AVERTISSEMENT
Tout écran ou protecteur retiré
pour permettre l’entretien de
l’appareil doit être remis en
place avant de mettre l’appareil
en marche.
WARNING
Improper installation or use of
this appliance can cause serious
injury or death from fire, burns,
explosion or carbon monoxide
poisoning.
Note: Installation and repair should be done
by a qualified service person. The appliance
should be inspected before use and at least
annually by a professional service person.
More frequent cleaning may be required
due to excessive lint from carpeting, bedding material, etcetera. It is imperative
that control compartments, burners and
circulating air passageways of the appliance
be kept clean.
Remarque : L’installation et la réparation
devrait être confiées à un technicien qualifié.
L’appareil devrait faire l’objet d’une inspection par un technicien professionnel avant
d’être utilisé et au moins une fois l’an par la
suite. Des nettoyages plus fréquents peuvent
être nécessaires si les tapis, la literie, et
cetera produisent une quantité importante de
pous-sière. Il est essentiel que les compartiments abritant les commandes, les brûleurs et
les conduits de circulation d’air de l’appareil
soient tenus propres.
Do not use these appliances if any part
has been under water. Immediately call a
qualified, professional service technician
to inspect the appliance and to replace any
parts of the control system and any gas
control which have been under water.
Ne pas utiliser cet appareil s’il a été plongé,
même partiellement, dans l’eau. Appeler un technicien qualifié pour inspecter
l’appareil et remplacer toute partie du
système de commande et toute commande
qui a été plongée dans l’eau.
Only trim kit(s) supplied by the manufacturer
shall be used in the installation of this appliance.
Seules les trousses de garniture fournies
par le fabricant doivent être utilisées pour
l’installation de cet appareil.
These appliances comply with National Safety
Standards and are tested and listed by OMNITest Laboratories, Inc. (Report No. 116-F-27-5)
to ANSI Z21.50 (in Canada, CSA 2.22), and
CAN/CGA-2.17-M91 in both USA and Canada,
as vented gas fireplaces.
Both millivolt and electronic versions of these
appliances are listed by OMNI-Test Laboratories, Inc. for installation in bedrooms in the
United States (not approved in Canada) and
in Manufactured Homes.
Misc. Codes / Standards -
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 (In Canada, the current CAN/CSA-B149.1
installation code).
The appliance, when installed, must be electrically grounded and wired in accordance with
local codes or, in the absence of local codes,
with the National Electrical Code, ANSI/NFPA
70 - latest edition, or the Canadian Electrical
Code, CSA C22.1 - latest edition.
Provide adequate clearances around air openings and adequate accessibility clearance for
service and proper operation. Never obstruct
the front or back viewing surfaces of the
appliance.
These appliances are designed to operate on
natural or propane gas only. The use of other
fuels or combination of fuels will degrade
the performance of this system and may be
dangerous.
These fireplaces are designed as supplemental
heaters. Therefore, it is advisable to have an
alternate primary heat source when installed
in a dwelling.
Outside Combustion Air Hook Up -
(All manufactured home installations require
the use of an Outside Combustion Air HookUp Kit)
These appliances are equipped with an integral
combustion air door and actuator arm. Combustion air kits are optional. Install as shown
in Step 6 on Page 14.
Millivolt Models - The millivolt appliances are
manually controlled and feature a spark igniter
(piezo) that allows the appliance's pilot gas to
be lit without the use of matches or batteries.
This system provides continued service in the
event of a power outage.
Millivolt models come standard with a manuallymodulated gas valve; flame appearance and heat
output can be controlled at the gas valve. Input
of for these models are shown in Table 1.
Input (BTU) Manually-Modulated Gas
Valves (millivolt models)
Model
MPB35ST-B 23,000
Natural Gas Propane Gas
BTU/HR BTU/HR
to 30,000 22,000 to 28,000
Table 1
Electronic Models - Electronic models have a
fixed rate gas valve. Input of electronic models
is shown in Table 2.
Input (BTU) Fixed-Rate Gas Valves
(electronic models)
Model
MPB35ST-B 30,000 28,000
Natural Gas Propane Gas
BTU/HR BTU/HR
Table 2
3
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Gas Pressure - All Models
Tables 3 and 4 show the units' 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
(all models)
Fuel # Low
(millivolt only)
Natural
Gas
Propane
(Lo) 2.2" WC
(0.55 kPa)
(Lo) 6.3" WC
(1.57 kPa)
High
(Hi) 3.5" WC
(0.87 kPa)
(Hi) 10.0" WC
(2.49 kPa)
Table 4
Test gauge connections are provided on the
front of the millivolt gas control valve, identified IN for the inlet and OUT for the manifold
side. A 1/8" NPT Test gauge connection
is provided at the inlet and outlet side of
the electronic gas control valve.
Propane tanks are at pressures that will cause
damage to valve components. Verify that the
tanks have step down regulators to reduce the
pressure to safe levels.
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).
Orifice Sizes - Sea Level to High Altitude
(All Models)
These appliances are tested and approved for
installation at elevations of 0-4500 feet (0-1372
meters) above sea level using the standard
burner orifice sizes (marked with an "*" in Table
5). For elevations above 4500 feet, contact your
gas supplier or qualified service technician.
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.
• Changing the burner orice 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 CAN/CSA-B149.1
codes - latest edition.
Install the appliance according to the regulations
of the local authorities having jurisdiction and,
in the USA, the National Fuel Gas Code NFPA
54 / ANSI Z223.1 - latest edition or, in Canada,
the CAN/CSA-B149.1 - latest edition.
NOTE: Flame appearance will diminish 4% per
thousand feet.
Burner Orifice Sizes
Elevation 0-4500 feet ( 0-1372 meters)
Model
Series
MPB35ST-B
Table 5
Nat.Gas
drill size (inches)
#37 (.104")
24M1001 •
* Standard size installed at factory
• Part /Cat. Number
1.55
*
Propane
drill size (inches)
mm
42M7901 •
(.061")
*
Gas Valve Diagrams
See Figure 1 for Millivolt models and Figure 2
For Electronic Models.
HI/LO Variable
Flame Height
Adjustment
Manifold Pressure Tap
Inlet Pressure Tap
Manifold Pressure
ON / OFF Switch
Port
Inlet
Pressure
Port
Electronic Gas
Control Valve
Figure 2 - Honeywell Electronic Gas Valve
REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS
Installation of these fireplaces are approved
for installation in the US state of Massachusetts if the following additional requirements
are met:
• Install this appliance in accordance with
Massachusetts Rules and Regulations 248
C.M.R. Sec. 5.08 2(a) through 2(e).
• Installation and repair must be done by a
plumber or gas fitter licensed in the Commonwealth of Massachusetts.
• The exible gas line connector used shall
not exceed 36 inches (92 centimeters) in
length.
• The individual manual shut-off must be a
T-handle type valve.
NEW YORK CITY, NEW YORK (MEA)
Installation of these fireplaces are approved
for installation in New York City in the US state
of New York.
These appliances must not be connected to a
chimney or flue serving a separate solid fuel
burning appliance.
Pilot Adjustment
Screw
Main Gas
Control Knob
OFF/PILOT/ON
Figure 1 - SIT Millivolt Gas Valve
4
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
COLD CLIMATE INSULATION
For cold climate installations, seal all cracks
around your appliance with noncombustible
material and wherever cold air could enter
the room. It is especially important to insulate
outside chase cavity between studs and under
floor on which appliance rests, if floor is above
ground level. Gas line holes and other openings should be caulked or stuffed with unfaced
fiberglass insulation.
If the fireplace is being installed on a cement
slab in cold climates, a sheet of plywood or
other raised platform can be placed underneath
to prevent cold transfer to the fireplace and into
the room. It also helps to sheetrock inside
surfaces and tape for maximum air tightness
and caulk firestops.
MANUFACTURED HOME
REQUIREMENTS
This appliance may be installed in an aftermarket permanently located, manufactured home
and must be installed in accordance with the
manufacturer's instructions and the Manufactured Home Construction and Safety Standard,
Title 24 CFR, Part 3280, in the United States, or
the Standard for Installation in Mobile Homes,
CAN/CSA Z240 MH Series, in Canada.
Cet appareil peut être installé cómme du matériel d'origine dans une maison préfabriquée (É.U.
seulement) ou mobile et doit être installé selon
les instructions du fabricant et conformément
à la norme Manufactured Home Constructions
and Safety, Title 24 CFR, Part 3200 aux Unis ou
à la norme Can/CSA-Z240 Série MM, Maisons
mobiles au Canada.
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.
Cet appareil doit être utilisé uniquement avec le
type de gaz indiqué sur la plaque signalétique.
Cet appareil ne peut être converti à d'autres gaz,
sauf si une trousse de conversion est utilisée.
Typical Installations
Locations
** One face
flush with a
wall
* One side
(end) flush
with a wall
Note: When the unit is installed with one side flush with a wall, the wall on the other side of the unit
must not extend beyond the front edge of the unit.
Vertical
Venting
Offset
Venting
Figure 3 - Typical Installations
LOCATION
In selecting the location, the aesthetic and
functional use of the appliance are primary
concerns. However, vent system routing to
the exterior and access to the fuel supply are
also important.
Due to high temperatures, the appliance
should be located out of traffic and away from
furniture and draperies (Figure 3).
En raison des températures élevées, l’appareil
devrait être installé dans un endroit où il y a
peu de circulation et loin du mobilier et des
tentures (Figure 3).
The location should also be free of electrical,
plumbing or other heating/air conditioning
ducting.
Be aware that this is a heat producing appliance. Objects placed above the unit are
exposed to elevated temperatures.
Do not insulate the space between the appliance and the area above it.
The appliance should be mounted on a fully
supported base extending the full width and
depth of the unit. The appliance may be located
on or near conventional construction materials.
However, if installed on combustible materials,
such as carpeting, vinyl tile, etc., a metal or
wood barrier covering the entire bottom surface
must be used.
CAUTION: Ensure that the cross members are not cut or weakened during
installation. The structural integrity of
the manufactured home floor, wall, and
ceiling / roof must be maintained.
CAUTION: This appliance must be grounded to the chassis of the manufactured
home in accordance with local codes or
in the absence of local codes, with the
National Electrical Code ANSI / NFPA 70
- latest edition or the Canadian Electrical
Code CSA C22.1 - latest edition.
Notes:
• An Outside Combustion Air Hook-Up Kit
must be installed (see Step 6, Page 14).
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
5
VENT TERMINATION CLEARANCES
Gas Vent Rule - Gas vent caps are not per-
mitted within 8 feet (2.4 mm) of a vertical wall
or similar obstruction. Gas vent caps that are
located 8' or more from a portion of a building
which extends at an angle greater than 45°
upward from the horizontal may terminate in
accordance with (Figure 4 ), provided that in no
case shall any discharge opening on the cap be
less than 2' (610 mm) horizontally from the roof
surface (National Fuel Gas Code ANSI Z223.1
(NFPA 54) 7.6.2) (CAN/CGA B149).
Multiple Terminations
These appliances may vent adjacent to and at
the same level with any other gas appliances
(including direct-vent appliances) provided that
there is at least 2 ft. (0.6m) between the proximal
edges of the vent caps. These appliances may
be vented adjacent to a chimney vent servicing
a solid fuel fireplace provided the B-vent cap
is at least 2 ft. (0.6m) away from the nearest
point of the chimney opening.
X
12
Roof Pitch is X/12
Minimum Height from Roof to
Lowest Discharge Opening
1“ (25 mm)
Minimum
Figure 4 - Vertical Vent Termination Clearances
Termination Heights For Vents
Above Flat Or Sloped Roofs
Ref. NFPA 54 / ANSI Z223.1, 7.6
Roof Pitch Feet Meters
Flat to 6/12 1.0 0.3
6/12 to 7/12 1.25 0.38
7/12 to 8/12 1.5 0.46
8/12 to 9/12 2.0 0.61
9/12 to 10/12 2.5 0.76
10/12 to 11/12 3.25 0.99
11/12 to 12/12 4.0 1.22
12/12 to 14/12 5.0 1.52
14/12 to 16/12 6.0 1.83
16/12 to 18/12 7.0 2.13
18/12 to 20/12 7.5 2.29
20/12 to 21/12 8.0 2.44
6
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
MINIMUM CLEARANCES TO COMBUSTIBLES
2
(51)
4
(102)
6
(152)
8
(203)
10
(254)
12
(305)
3 (76)
5 (127)
9 (289)
13 (330)
11 (279)
7 (178)
1
(25)
2
(51)
3
(76)
1 (25)
2 (51)
3 (76)
4
(102 )
4 (102 )
5
(127 )
5 (127 )
6 (152 )
7 (178 )
8 (203 )
9 (229 )
10 (250 )
Appliance And Vent Clearances
Maintain clearances from appliance to combustible materials as detailed in
Table 6 with the following exception: When the unit is installed with one
side flush with a wall, the wall on the other side of the unit must not
extend beyond the front edge of the unit. In addition, when the unit is
installed in the middle of a room, the side walls surrounding the unit must
not extend beyond the front or rear edge of the unit. See Figure 3.
MINIMUM CLEARANCES
Inches (millimeters)
Sides 1/2 (13)
Top Spacers 0 (0)
Floor 0 (0)
Bottom of Appliance
To Ceiling
72 (1829)
Vent 1 (25.4)
SERVICE CLEARANCES
Feet (meters)
Front and Back Faces 3 ft. (0.9 m)
Table 6
Hearth Extension - A hearth extension is not required with this appliance.
If a hearth extension is used, do not block the control compartment access
panel. Any hearth extension used is for appearance only and does not have
to conform to standard hearth extension installation requirements.
Mantel Depth
NOTE - The side walls of mantels
may protrude beyond the front face
of the fireplace a maximum of 5
inches (127 mm) at 0 inch clearance
to the sides of the fireplace.
inches (millimeters)
Top Of Appliance
Figure 5 - Minimum Mantel Clearances
Combustible materials may project
beyond one side of the fireplace opening as long as they are kept within the
shaded areas illustrated here.
At 5" minimum side wall clearance,
the wall (shown in dark gray) can be
any length.
Top View of
Fireplace
Wall Finishes / Surrounds / Mantels
Note: Combustible wall finish materials and/or surround materials must
not be allowed to encroach the area defined by the appliance front face
(black sheet metal). Never allow combustible materials to be positioned
in front of or overlapping the appliance front face. See Figure 37.
Non-combustible materials, such as surrounds and other appliance trim,
may be installed on the appliance front and back faces with the following
exception: The material must NOT cover any portion of the glass, louvers
or top radiant panel (optional kit).
Vertical installation clearances to combustible mantels vary according
to the depth of the mantel. (See Figure 5). Mantels constructed of noncombustible materials may be installed at any height above the appliance
opening; however, do not allow anything to hang below the hood.
These instructions should be used as a guideline and do not supersede
local codes in any way.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
o
45
Inches (millimeters)
Figure 6 - Minimum Distance to Unprotected Side Wall
7
WARNING
Failure to position the parts in
accordance with these diagrams
or failure to use only parts specifically approved with this appliance
may result in property damage or
personal injury.
TYPICAL INSTALLATION SEQUENCE
The typical sequence of installation is outlined
below. However, each installation is unique
and may result in variations to the steps
described.
See the page number references in the following
steps for detailed procedures.
Step 1. FRAMING
Frame these appliances as illustrated in Figure
9. All framing details must allow for a minimum
clearance to combustible framing members as
shown in Table 6 on Page 7.
If the appliance is to be elevated above floor
level, a solid continuous platform must be
constructed below the appliance.
AVERTISSEMENT
Risque de dommages ou de
blessures si les pièces ne sont
pas installées conformément à
ces schémas et ou si des pièces
autres que celles spécifiquement
approuvées avec cet appareil sont
utilisées.
DETAILED INSTALLATION STEPS
The appliance is shipped with all gas controls
and components installed and pre-wired.
1. Remove the shipping carton. Remove the
shipping pad, exposing the front glass
door.
2. Open the two latches (located under the firebox floor) securing the glass door. Remove
the door by tilting it outward at the bottom
and lifting it up. Set the door aside protecting
it from inadvertent damage. See Removing
Glass Panels on Page 18.
Top Louver Panel
Step 1. (Page 8) - Construct the appliance
framing. Position the appliance within
the framing and secure with nailing
flanges.
Step 2. (Page 10) Route gas supply line to
appliance location.
Step 3. ( Page 11) Install the vent system and
exterior termination.
Step 4. (Page 12) Field Wiring
a. Millivolt Appliances – Install the
OFF/ON burner control switch.
b. Electronic Appliances – Connect 120
VAC electrical power to the appliance
receptacle.
Step 5. (Page 13) Make connection to gas
supply.
Step 6. (Page 14) Outside Air Kit Installation.
Step 7. (Page 15) Verify appliance operation.
Step 8. (Page 15) Install grate, vermiculite,
embers and logs.
Step 9. (Page 18) Installation/Removal of glass
enclosure panels.
Step 10 ( Page 19) Adjust burner primary air
shutter to achieve proper flame appearance.
Step 11. (Page 20) Vent operation test and (safety
limit) switch operation.
Step 12. (Page 20) Install the decorative trims
and hoods.
Step 13. (Page 21) Attach Safety in Operation
Warnings.
Headers may be in direct contact with the
appliance top spacers but must not be supported by them or notched to fit around them.
All construction above the appliance must be
self-supporting, DO NOT use the appliance for
structural support.
Side Nailing Flanges
The fireplace should be secured to the side
framing members using the unit's nailing
flanges - one top and bottom on each side
of the fireplace front. See Figure 8 using the
existing screws. Position the fireplace within
the framing. When required, the tabs may be
bent 90 degrees by hand or with the assistance
of a hammer. Use wood screws to secure the
nailing flanges to the framing. See Table 6 on
Page 7 for clearances of framing members
to cabinet parts. The nailing flange itself can
directly contact framing.
Floor Nailing Tabs
Secure the fireplace to the floor as shown in
Figure 8.
Remove the screws
and use them when
installing the nailing
flanges
Control Compartment Access Panel
Figure 7 - Unit Parts Identification
* NOTE: INSTALLATION DIAGRAMS AND
INSTRUCTIONS SHOW THE FRONT OF THE
APPLIANCE AS THE SIDE WHICH HAS VALVE
ACCESS, EXCEPT WHERE NOTED.
8
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Nailing
Flanges
Turn nailing tabs down and secure to the floor
with 8d nails or other appropriate fasteners on
both sides of appliance.
Figure 8
FIREPLACE SPECIFICATIONS - MPB35ST
3-1/8 (79)
6-1/4
(159)
22
(559)
20-7/8 (529)
FRAMING
35-3/8
(899)
36-3/8 (923)
11 (279)
17-3/4 (451)
35-1/8
(892)
32-5/8
(827)
3 (76)
3 (76)
3-1/8 (79)
6-1/4
(159)
6
(152)
12
(305)
19
(483)
29 1/2
(749)
SPECIFICATIONS
Natural Gas BTU Input 30,000
Propane Gas BTU Input 28,000
B-Vent Size 5 in. (127 mm)
NOTES
Due to Lennox' ongoing commitment to quality,
all specifications, ratings and dimensions are
subject to change without notice.
PRODUCT REFERENCE INFORMATION
Cat.
No.
H7808 MPB35ST-NM-B 200 lbs 46W x 26D x
H7809 MPB35ST-PM-B 200 lbs 46W x 26D x
H7810 MPB35ST-NE-B 200 lbs 46W x 26D x
Model Ship
Weight
Ship.
Volume
43H (30 cu.ft.
43H (30 cu.ft.
43H (30 cu.ft.
EFFICIENCIES
22 % Natural Gas
23 % Propane Gas
Framing Specifications
Notes:
• Inches (millimeters)
• Minimum Framing Stud Size is 2 x 4
• See side views of replace below for
gas line inlet location options.
35-1/4
(895)
** This dimension based on 5/8"
drywall. For 1/2" drywall use 21"
(533 mm). The finished dimension
should be 22" (558 mm).
**20-3/4
(527)
Gas line center is
3 1/8 inches (79 mm)
up from floor.
5-5/8" (143)
*36-1/2
Front - Valve Access Side
* This dimension does not include the
Gas
line
(927)
addition of drywall to the inside of
framing. Adjust accordingly for your
installation.
Figure 9
Control Switch
Wires
Knock-Out
Gas
Inlet
LEFT SIDE VIEW
FINISH WALL BRACKET
(Front and back edge of unit top)
FRAMING SPACER
(Top and Both Sides)
TOP VIEW
5 (127) DIA. B-VENT
Control
Compartment
Door
FRONT VIEW RIGHT SIDE VIEW
Control Switch
Wires
Knock-Out
Fireplace Specifications
Gas
Inlet
Outside Air
Shutter
Junction Box
Knock-Out (2
places each side)
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
9
Step 2. ROUTING GAS LINE
Route a 1/2" (13 mm) gas line along the inside
of the right side framing as shown in Figure 10.
Gas lines must be routed, constructed and made
of materials that are in strict accordance with
local codes and regulations. All appliances
are factory-equipped with a flexible gas line
connector and 1/2 inch shutoff valve. (See
Step 5 on Page 13).
Also see
Figure 9
3-1/8"
5 5/8"
(143 mm)
(79 mm)
Figure 10 - Route Gas Line
Proper Sizing of Gas Line
Properly size and route the gas supply line
from the supply regulator to the area where
the appliance is to be installed per requirements outlined in the National Fuel Gas Code,
NFPA 54 - latest edition (USA) or B149 - latest
edition (Canada).
Never use galvanized or plastic pipe. Refer to
Table 7 for proper sizing of the gas supply line,
if black iron pipe is being used. Gas lines must
be routed, constructed and made of materials
that are in strict accordance with local codes
and regulations. We recommend that a qualified individual such as a plumber or gas fitter
be hired to correctly size and route the gas
supply line to the appliance. Installing a gas
supply line from the fuel supply to the appliance
involves numerous considerations of materials,
protection, sizing, locations, controls, pressure,
sediment, and more. Certainly no one unfamiliar
and unqualified should attempt sizing or installing gas piping.
Schedule 40 (black iron) Pipe
Inside Diameter (Inches)
Schedule 40 Pipe
Length (feet)
0-10 1/2 3/8
10-40 1/2 1/2
40-100 1/2 1/2
100-150 3/4 1/2
150-200 3/4 1/2
Natural
Gas
Propane
Gas
Table 7
Notes:
• All appliances are factory-equipped with a
flexible gas line connector and 1/2 inch shutoff
valve (see Figure 19 on Page 14).
• See Massachusetts Requirements on Page 4
for additional requirements for installations in
the state of Massachusetts in the USA.
• The gas supply line should Not be connected
to the appliance until Step 5 (Page 13).
• A pipe joint compound rated for gas should be
used on the threaded joints. Ensure propane
resistant compounds are used in propane
applications. Be very careful that the pipe
compound does not get inside the pipe.
• It is recommended to install a sediment trap
in the supply line as close as possible to the
appliance (see Figure 19 , Page 14). Appliances using propane should have a sediment
trap at the base of the tank.
• Check with local building ofcial for local code
requirements (i.e. are below grade penetrations
of the gas line allowed?, etc).
IMPORTANT: If propane is used, be aware that
if tank size is too small (i.e. under 100-lbs, if
this is the only gas appliance in the dwelling.
Ref. NPFA 58), there may be loss of pressure,
resulting in insufficient fuel delivery (which
can result in sooting, severe delayed ignition
or other malfunctions). Any damage resulting
from an improper installation, such as this, is
not covered under the limited warranty.
10
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Step 3. INSTALL THE VENT SYSTEM &
EXTERIOR TERMINATION:
General Information
These instructions should be used as a
guideline and do not supersede local codes
in any way. Install venting according to local
codes, these instructions, the current National
Fuel Gas Code (ANSI-Z223.1) in the USA or
the current standards of CAN/CSA-B149.1
in Canada.
Ensure clearances are in accordance with
local installation codes and the requirements
of the gas supplier.
Dégagement conforme aux codes d'installation
locaux et aux exigences du foumisseunde
gaz.
Use only approved venting components.
See Approved Vent Components on
Page 2.
These fireplaces must be vented directly
to the outside.
Vertical
Installations
10 Feet (3 Meters)
Minimum
1" (25 mm)
Minimum
Firestop
The maximum overall height of the vent system
and appliance should not exceed 40 feet.
Offset
Installations
60 Degrees
Maximum
12 Feet (3.7 Meters)
Minimum
Slip the first 5 inch (127 mm) section of BVent over the fireplace flue outlet and secure
with four sheetmetal screws (# 8 or larger),
and install the remainder of the B-Vent to the
outside. Minimum overall height of the vent
system and appliance must be 10' (2.54 m)
vertical - no offset (see Figure 12); or 12'
(3.7 m) when an offset up to 60 degrees from
the vertical is used - this offset may start at
the fireplace flue collar (see Figure 12). The
maximum overall height of the vent system and
appliance should not exceed 40 feet.
Install the B-vent system in accordance with
the vent manufacturer's instructions.
Use only approved venting components.
See Approved Vent Components on Page 2.
Securing
Screws
Flue Outlet
Collar
Figure 12
CAUTION
This appliance cannot be vented
horizontally.
Note: Refer to the vent manufacturers installation instructions for variations of venting
techniques. If common venting of several units
is contemplated, it should be discussed with an
architect and the local Building Department.
Do not place insulation materials within 1 in.
of the gas vent system.
Figure 11
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
11
Thermopile
TH
TP
TH
TP
White
White
Black
Spill Switch
12
Step 4. FIELD WIRING
CAUTION
Ground supply lead must be connected to the wire attached to the
green ground screw located on the
outlet box. See
Figure 18. Failure to
do so will result in a potential safety
hazard. The appliance must be
electrically grounded in accordance
with local codes or, in the absence of
local codes, the National Electrical
Code, ANSI/NFPA 70-latest edition.
(In Canada, the current CSA C22-1
Canadian Electrical Code).
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can
cause improper and dangerous operation.
ATTENTION: Au moment de l'entretien des
commandes, étiquetez tous les fils avant de
les débrancher. Des erreurs de cáblage peuvent entraîner un fonctionnement inadéquat
et dangereux.
Verify proper operation after servicing.
S'assurer que l'appareil fonctionne adéquatement une fois l'entretien terminé.
Refer to Section A for millivolt appliances and
Section B for electronic appliances.
A. Millivolt Wiring (See Figure 14) –
1. Install and wire in the burner control switch
(install either "a" or "b" below, NOT BOTH)
a. Standard OFF/ON Switch - Install the OFF/
ON burner control switch (rocker switch)
as shown in Figures 13 and 14.
b. Optional Control Switch (OFF/ON wall
switch or remote control receiver). Install
snap bushing (provided in Electrical
Outlet Kit) into control switch knock-out in
side panel (see Figure 9 on Page 9). Wire
the optional control switch within the millivolt control circuit (as shown in Figure
14) using the 15 feet of 2 conductor wire
supplied (route wires through the snap
bushing to the optional control switch).
Mount the optional control switch or wall
thermostat in a convenient location on a
wall near the fireplace.
CAUTION: DO NOT CONNECT OPTIONAL CONTROL SWITCH TO 120 V POWER SUPPLY.
CAUTION: REMOVE THE CARTON SUPPORT
FROM THE CONTROL COMPARTMENT BEFORE
OPERATING THE APPLIANCE.
CAUTION: ENSURE THAT WIRES ARE POSITIONED AWAY FROM HOT SURFACES AND
SHARP EDGES.
Install OFF/ON Switch
(millivolt models)
1. Connect the 2 wires (provided in Electrical
Outlet Kit) to the TP/TH and TH terminals
on valve.
2. Pass the 2 wires through the opening where
OFF/ON switch will be installed (left of piezo,
below valve).
3. Connect the two wires to the OFF/ON Switch.
OFF/ON
Switch
4. Press the OFF/ON switch into bracket as shown
below (it will snap into place).
TP TH
TH
OFF/ON
Switch
Figure 13
Control Compartment
Connect
wires to
terminals
Gas
Valve
Access panel
Millivolt Wiring Diagram
If any of the original wire as supplied must
be replaced, it must be replaced with Type
AWM105 C - 18 gage wire.
Schematic Representation Only
Field Wired
Factory
Wired
Appliance mounted OFF / ON Switch
* Optional Kits - OFF/ON wall switch or
remote control receiver.
Figure 14
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
B. Electronic Wiring
(also see Figure 18 on Page 13)
Note: The electronic appliance must be con-
nected to the main 120 VAC power supply.
1. Locate the Electrical Outlet Kit provided (pack-
aged in firebox - contents: junction box, 2
screws, an receptacle outlet, a snap bushing
and an OFF/ON rocker switch - for millivolt
units only).
Note: The junction box can be installed in any
of the 4 outside corners of the control compartment (outlet installed in front left corner is
shown in Figure 17 ).
2. Route a 3-wire, 120 VAC, 60 Hz, 1 ph power
supply to the location on appliance where
junction box is to be installed.
3. Open the control compartment access panel
(see Control Compartment Access Instruc-
tions on Page 14).
4. Wire and install the outlet receptacle to
junction box, then install into the chosen
corner of the control compartment as shown
in Figure 17.
5. After the receptacle/junction box wiring is
complete, install the field-provided metal
junction box cover plate (see Figure 17).
6. Install the snap bushing (provided in kit)
into the selected cabinet knockout opening
in side cabinets (see Electrical Inlets, Figure
9 on Page 9). The snap bushing provides
protection for the wires (see note below)
passing through side cabinet going to an
optional burner control switch Wire in the
burner control switch to the low voltage circuit
as shown in Figure 18.
Note: The supplied 15 feet of 2 conductor
wire has one end of each conductor connected to the gas valve circuit and the other
end of each conductor placed loose on top
of the appliance.
Important Note: The gas valve OFF/ON switch
is shown in Figure 18 on Page 13. It is integral
with the gas valve and should be set to the ON
position.
Ground Wire
Connection
White
(supply)
Bipolar
Black
(supply)
Note: Supply wires may be alternatively connected to the outlet using the screw terminals,
however the black supply wire must be wired to
a terminal that is opposite (across the outlet) the
point where the white supply wire is connected.
Terminal
Screw
Figure 15
Figure 16- J-BOX WIRING
J-BOX/RECEPTIACLE
WIRING
120V, 60HZ, 1PH
Factory Wired
Field Wired
Junction Box
Tab Intact
Tab
Intact
n e e r G - d n u o r G
e t i h W - l a r
t
u e N
120 VAC - Black
Green
Ground
Screw
White
Green
Neutral
Side of
Receptacle
Hot
Side of
Receptacle
Black
1. If any of the original wire as supplied must be replaced,
1. it must be replaced with Type AWM 105C – 18 GA.
wire.
2. 120V, 60Hz – Less than 3 amps.
BK
Junction Box
Transf.
120 V.
24 V
Factory Wired Field Wired
BL
Electronic Wiring Diagram (Honeywell)
R
WT
BL
G
W
120
VAC.
BK
W
Gas Valve
B
APPLIANCE-MOUNTED ON/OFF SWITCH
R
IGNITER
PILOT
ASSEMBLY
BK
G
Outlet Box Green
Ground Screw
Hot side of Outlet
Schematic Representation Only
*ON/OFF Switch (Integral
with Gas Valve)
White Wire
To Opposite
Side
**OPTIONAL WALL SWITCH
OR OPTIONAL THERMOSTAT
OR OPTIONAL REMOTE
RECEIVER
*Leave the ON/OFF switch, which is integral
with the gas valve, in the ON position.
**Turn the appliance-mounted ON/OFF burner control switch to
the OFF position if an optional control switch is installed.
LIMIT SWITCH
WT
G
Electronic Wiring Diagram (Honeywell)
1. If any of the original wire as supplied must be
replaced, it must be replaced with Type AWM 105°C
- 18 gage wire.
2. 120 V, 60 Hz - Less than 3 Amps.
Caution: label all wires prior to disconnection
when servicing controls. Wiring errors can cause
improper and dangerous operation.
The millivolt control valve has a 3/8" (10 mm)
NPT thread inlet port. The electronic control
valve has a 1/2" (13 mm) NPT thread inlet
port and is fitted with a 1/2" x 3/8" (13 mm x
10 mm) NPT fitting.
Secure all joints tightly using appropriate
tools and sealing compounds (ensure propane
resistant compounds are used in propane applications). It is recommended to seal around
the gas line to prevent cold air leakage.
Acquire the shut-off valve and gas lex line and
pull the assembly forward out of the compartment. Separate the shut-off valve from the gas
flex-line. Determine the length of pipe needed
to route the gas line from the last fitting (shown
in Figure 19 on Page 14) to a point within the
control compartment that will allow the shutoff valve to be easily attached by hand to the
gas flex-line.
Using pipe-dressing materials appropriate for
the gas type, securely affix the shut-off valve
to this determined pipe length at a convenient
location outside of the appliance lower control
compartment.
TEST ALL CONNECTIONS FOR GAS LEAKS
(FACTORY AND FIELD):
Receptacle, Junction Box
and Cover Plate Installation
Outlet Receptacle
Junction Box
Latching magnet
View Of Left
Bottom Corner Of Unit
Field-provided Metal Junction Box
Cover Plate With Screw
Junction Box
knock-out (2
places each side)
Press snap
bushing into the
knock-out for
control switch
wires.
Figure 17
not shown
Fireplace
Side
Figure 18
Step 5. CONNECTING GAS LINE
All codes require a shut-off valve mounted
in the supply line. The orientation of the
shut-off valve should face the front. Figure
19 illustrates two methods for connecting the
gas supply. A Sediment Trap is recommended
to prevent moisture and debris in gas line from
damaging the valve.
The flex-line method is acceptable in the U.S.A.
where local codes permit, however, Canadian
requirements vary depending on locality. Installation must be in compliance with local codes.
These appliances are equipped with a gas flexline for use in connecting the unit to the gas line.
See Figure 19 for flex-line description. The
flex-line is rated for both natural and propane
gas. A manual shut off valve is also provided
with the flex-line.
The gas control valve is located in the lower
control compartment.
Valve Access Side
To access the valve open the lower control
compartment door (see Figure 21).
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
WARNING
Never use an open flame to
check for leaks.
Turn on gas supply and test for gas leaks using Turn on gas supply and test for gas leaks,
using a gas leak test solution (also referred to
as bubble leak solution).
Note: Using a soapy water solution is an effective leak test solution but it is not recommended,
because the soap residue that is left on the pipes/
fittings can result in corrosion over time.
A. Light the appliance (refer to the lighting
instructions label in the control compartment
or in the Care and Operation Instructions
manual).
B. Brush all joints and connections with the gas
leak test solution to check for leaks. If bubbles
are formed, or gas odor is detected, turn the
gas control knob (off/pilot/on) to the “OFF”
position. Either tighten or refasten the leaking
connection, then retest as described above.
C. When the gas lines are tested and leak free, be
sure to rinse off the leak testing solution.
13
Note: The gas supply line
Gas
Valve
3/8" NPT x
Flare Fitting
3/8" Flex Tubing
3/8" Nipple
3/8" Union
3/8" Close
Nipple
3/8" Shut-off Valve
1/2" x 3/8"
Reducer
Gas
Stub
1/2" x 3/8" Flare
Shut-off Valve
Gas Solid Line Connector
Gas Flex Line Connector
*Sediment
Trap
3"
Min
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
Massachusetts, installation must be performed
by a licensed plumber or
gas fitter.
Figure 19 - GAS CONNECTION
CONTROL COMPARTMENT ACCESS INSTRUCTIONS (Ref. Figure 20)
Opening Control Compartment Door: Gently depress the outer top corners of the louvered Control
Compartment Access Panel until the spring-loaded magnetic catches "pop" it free, allowing it to
swing out and down to open.
Removing Control Compartment Door: With the panel in the open position, depress the springloaded hinge pin on left side until it disengages from the left cabinet panel hole. Pull panel away
from fireplace.
Step 6. OUTSIDE AIR KITS
Optional outside make-up air kits, Model
FOAK-4 or FAOK-4LD (see Figure 22 on Page
15), may be used with these appliances. Refer
to the installation instructions packaged with
the air kits for specific installation information.
If used, the outside air kit must be installed
before the fireplace is framed and enclosed in
the finished wall.
Outside air drawn into the fireplace supplies
air to the fire for combustion. Only one outside
air duct is necessary, if installed. See Figure
9, Page 9 for the location of the units outside
air inlet.
If additional length of duct is necessary, purchase locally available U.L. Class 0 or Class 1
metallic ducting. The duct may extend up to 50'
(15.24 m) in any direction.
Note: When installing the air duct vertically,
DO NOT terminate the duct closer than 3 feet
below the chimney top.
Outside combustion air ducting may be run
upwards or vertically through framing and
ceiling joists, with the hood installed through
an outside wall and 3 feet (1 m) below the termination. Ducting may also be run downward
through floor Joists and under the home to a
ventilated crawlspace not considered part of
the living area of the home.
14
Hinge Pin
Latch for
Glass Door
Figure 20
Control Compartment
HI/LO (flame height
control knob)
OFF/ON Switch
Access panel
OFF/PILOT/ON (gas control knob)
Gas Flex Line
(with shut-off valve)
Piezo Igniter
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Gas Valve
Note: Do not terminate outside air kit in attic
space under any circumstances.
CAUTION
Never locate inlet where it can be
blocked by shrubs, snow drifts,
etc. Never locate inlet in garage
or any area where there is another
fuel burning appliance or products
emitting combustible gases such
as paint, gasoline, etc. In cold
climates, it is recommended the
outside air duct be insulated.
After completing the installation of the optional
outside air vent system, the outside air control
lever must be put in service and tested to
ensure proper operation before completing
any enclosure around the firebox. Failure to do
so may result in extensive and costly rework.
Before the operation of the vent system can
be tested, the lever securing screw must be
removed. See Figure 21 on Page 15.
The hand operated outside air control lever
is located on the right side of the fireplace
opening. See Figure 21.
To open the outside air , open the bottom control
access panel, reach into the gap between the
firebox bottom 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 fireplace is not being used. Closing
it when not in use will prevent outside cold air
from entering the dwelling.
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.
Outside Air Control Lever
and Securing Screw Location
Glass Front
Outside Air Control Lever
with Stop Behind
Securing Screw
Control Compartment Access Panel
Figure 21
Outside Air Kits - Outside Air kits are available with duct (FOAK-4) and without duct
(FOAK-4LD) for use if outside combustion air
is required or desired. If model FOAK-4LD is
used it must be used in conjunction with locally
purchased, non-combustible Class 1 or Class
0 flexible duct.
(ref. Form # 750,008M)
Outside Combustion Air Kits
Cat. No. Model No. Description
81L87 FOAK-4 Combustion Air Kit (w/duct)
81L88 FOAK-4LD Combustion Air Kit (w/o duct)
Figure 22
Step 7. VERIFY APPLIANCE OPERATION
With gas line installed run initial system checkout before closing up the front of the unit. Follow
the pilot lighting instructions provided in the
Care and Operation Instructions manual. For
piezo igniter location see Figure 20 on Page
14 (millivolt appliances only).
Note: The (pull-out) Lighting instructions label
can be found in the control compartment
(see Figure 20).
When first lighting the appliance, it will take
a few minutes for the line to purge itself of
air. Once purging is complete, the pilot and
burner will light and operate as indicated in
the instruction manual. Subsequent lightings
of the appliance will not require such purging.
Inspect the pilot flame.
Millivolt Appliance Checkout
The pilot flame should be steady and, not lifting
or floating. Flame should be blue in color with
traces of orange at the outer edge.
The top 3/8" (10 mm) at the pilot generator
(thermopile) and the top 1/8" min (tip) of the
quick drop out thermocouple should be engulfed
in the pilot flame. The flame should project 1"
(25 mm) beyond the hood at all three ports
(Figure 23).
To light the burner; rotate the gas valve control
knob counterclockwise to the “ON” position
then turn “ON” the OFF/ON switch (installed at
Step 4, Page 12).
Proper Pilot Flame Appearance
Thermocouple
1/8" Min.
(3 mm)
Pilot
Nozzels
Figure 23
Observe the individual tongues of flame on
the burner. Make sure all ports are open and
producing flame evenly across the burner. If
any ports are blocked, or partially blocked,
clean out the ports.
Electronic Appliance Checkout
To light the burner, turn ‘ON’ the OFF/ON switch
(located below valve) and turn the gas control
switch to the “ON” position. Ensure the igniter
lights the pilot. The pilot flame should engulf
the flame rod as shown in Figure 24.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Igniter Rod
Hood
3/8" Min.
(9 mm)
Thermopile
ELECTRONIC
Proper Flame
Adjustment
Pilot
Nozzels
3/8" to 1/2"
(9 -13 mm)
Ground
Electrode
Flame Rod
Hot Surface
Igniter
Figure 24
Step 8. INSTALL GRATE, VERMICULITE,
GLOWING EMBERS AND LOGS
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.
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, sooting, and poor flame quality.
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.
This appliance is not designed
•
to burn wood. Any attempt
to do so could cause irreparable damage to the appliance
and prove hazardous to your
safety.
If logs are not installed
•
according to the log installation instructions, flame
impingement and improper
combustion could occur and
result in soot and/or excessive
production of carbon monoxide
(CO), a colorless, odorless,
toxic gas.
15
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
H6319 Vermiculite, Bag (2 liters)
Glowing Embers
H3210
Description
Log, Center
Log, Left Rear
Log, Left Front
Log, Right Rear
Log, Top Center
Log, Front Center
Bottom View of Logs (in packaging)
C
A
B
F
D
E
Top View of Logs
B
E
Separate into Quarter
Size (separate) Pieces
Bag of Glowing
Embers (rockwool)
D
A
C
F
Top View of Logs - Installed
B
D
E
C
16
Figure 25
(Valve Access Side)
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
F
A
INSTALLATION STEPS:
7. Place Log (B) as shown in Figure 28.
READ WARNINGS ON Page 15 BEFORE PROCEEDING
1. Remove the front glass enclosure panel (see Glass Enclosure Panel
Removal Instructions, Page 18)
2. Remove the following from firebox; log set, bag of embers and bag
of 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. Install Vermiculite - Place some vermiculite on the firebox floor around
the grate (the entire bag of vermiculite will NOT be used). See Figure 34
on Page 19. DO NOT PLACE ANY VERMICULITE ON THE BURNER.
5. Placement of Glowing Embers -
Separate the Embers (rockwool) into pieces about the size of a quarter
(see Figure 25 ). Keep the pieces fluffed up, not matted. Distribute
these pieces over the surface of the burner, as shown in Figure 26.
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 28
8. Place Log (C) as shown in Figure 29.
(Valve Access Side)
Log (C) Lays Over Logs (A) and (B)
Figure 26
DO NOT PLACE EMBERS OVER
GAS PORTS / AREAS CIRCLED
6. Place Log (A) on the grate as shown in Figure 27.
A
B
C
Position The Groove in The Back of Log (C)
Figure 29
9. Place Log (D) as shown in Figure 30.
Against The Grate
Position And Slide Log (D) Against The
Back Of
A
(Valve Access Side)
The Grate
A
Position Groove At The Bottom Of
Log (A) Over The Log Support Here
Figure 27
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 30
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
D
Place Log (D) Over The
Flat Spot On Log (A)
Here
17
10. Place Log (E) as shown in Figure 31.
Position The Round End Of Log (E) Against The Notch Of
Log (D) Here. Two Charred Spots Face The Front
E
WARNING
Do not operate appliance with the glass front
removed, cracked or broken.
AVERTISSEMENT
D
Ne pas utiliser l'appareil si le panneau frontal en
verre n'est pas en place, est craqué ou brisé.
Only doors certified with the appliance shall be used.
C
Position Small End of Log
(E) on The Notch of Log
(C) Here
11. Place Log (F) as shown in Figure 32.
(Valve Access Side)
Figure 32
(Valve Access Side)
Figure 31
Log (F) Sits in
F
Front of The Grate
Seules des portes certifiées pour cet appareil doivent être
utilisées.
CAUTION: DO NOT abuse glass door by striking or slamming
shut.
1. Visually inspect the gasket on the backside of the panels. The gasket
surface must be clean, 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 33.
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. Reinstall the bottom control compartment access panel (if necessary) by
inserting the right side locating pin into the right side cabinet panel and
then the left side spring-loaded pin into the left side cabinet panel.
Glass Enclosure Panel Removal Instructions (see Figure 33) - Locate
the two (2) latches at the top of the control compartment. Open 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).
Lower Compartment
Door & Hinge
Top Flange
Glass Door
Glass Door (Enclo-
sure Panel)
Step 9. INSTALLING/REMOVING GLASS ENCLOSURE PANELS
WARNING
• Do not attempt to substitute the materials used on
these doors, or replace cracked or broken glass.
• Handle this glass with extreme care! Glass is
susceptible to damage – Do not scratch or handle
roughly while reinstalling the glass door frame.
• The glass door(s) 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.
• Do not attempt to touch the front enclosure glass
with your hands while the fireplace is in use.
18
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Bottom Vee-flange
Glass Door
Figure 33
Firebox Floor
Glass Door Latch
Step 10. BURNER ADJUSTMENTS
Flame Appearance and Sooting
Proper flame appearance is a flame which is
blue at the base and becomes yellowish-orange
in the body of the flame.
When the appliance is first lit, the entire flame
may be blue and will gradually turn yellowishorange during the first 15 minutes of operation.
After 15 minutes of operation, if the flame is
blue, or if the flame is orange with evidence of
sooting (black tip), the air shutter opening may
need to be adjusted.
If the air shutter opening is 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.
Air Shutter Adjustment Guidelines
• If there is smoke or soot present, rst 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.
• 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 persists, 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.
Burner Air Shutter Adjustment Procedure
WARNINGS
• Air shutter adjustment should
only be performed by a qualified professional service technician.
• Ensure front glass panel are
in place and sealed during
adjustment.
CAUTIONS
• Soot 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.
• The air shutter door and nearby
appliance surfaces are hot.
Exercise caution to avoid
injury while adjusting flame
appearance.
Burner Air Shutter Adjustment Procedure
1. Locate adjustment rod and adjust air shutter
to the standard setting as shown in Figure
35 (adjustment rod is located in the lower
control area).
Note: Rotating the adjustment rod coun-
terclockwise decreases air and clockwise
increases air.
2. Light appliance (follow lighting procedure on
lighting label in control compartment or see
care and operation instructions manual).
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 34).
If the following conditions are present, adjust
accordingly.
• If ame appears weak or sooty, adjust the
air shutter, incrementally, to a more open
position until the proper flame appearance
is achieved.
• If ame stays lowered blue, adjust the air
shutter, incrementally, to a more closed
position until the proper flame appearance
is achieved.
4. Leave the control knob (off/pilot/on) in the
ON position and the burner OFF/ON switch
OFF (& remote switches, if applicable).
5. When satisfied that the burner flame appear-
ance is normal, close the lower control
compartment door then proceed to finish
the installation.
Decrease Shutter Opening
In This Direction
Orifice
Increase Shutter Opening
In This Direction
Air Shutter
Adjusting Rod
Note - Burners are omitted in this view for clarity.
Main Burner Factory Air Shutter
Opening Setting - All Models
Model Natural
MPB35ST
Figure 35
Gas
1/8”
3.2mm
Adjustment Rod Positions
(when viewed from above)
Propane
Gas
1/4”
6.4mm
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
Air Shutter
Adjustment
Air shutter
gap should be
increased
Air shutter
gap should be
decreased
Vermiculite
Figure 34 - Burner Flame Appearance
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
19
Combustible
Wall
Framing
Combustible
Finished Wall
Materials
Drywall
Bracket/Spacer
Top of Appliance
Louvers
Top of Door
Frame
Hood must be
installed as shown.
1 in. Min.
(25 mm)
Top
Spacers
Top of Appliance
Radiant panel
Top of Door Frame
Hood must be
installed as shown.
IF OPTIONAL RADIANT
PANELS ARE INSTALLED
Step 11. VENT OPERATION TEST
A vent operation test is required as part of the
installation to verify that proper venting conditions exist and should be done periodically to
ensure nothing has changed that would affect
proper venting of the appliance.
Procedure:
1. ENSURE APPLIANCE IS OFF (PILOT ONLY)
AND COOL.
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 33
on Page 18.
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.).
4. Ensure that all the doors and windows in
the room where the fireplace is located are
closed.
5. Light the appliance (see Lighting Instructions in Control Compartment or Care and
Operation Instructions Manual). 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 along the bottom edge of the glass door
(where it is cracked open). If smoke is
drawn into the firebox, the vent operation
is adequate.
IF THE SMOKE IS NOT
DRAWN INTO THE FIREBOX, TURN THE
APPLIANCE OFF AND CALL A QUALIFIED
SERVICE TECHNICIAN.
Manual-Reset (safety limit) Spill Switch
This appliance is equipped with a (safety limit)
spill switch that is designed to "trip" and discon-
nect the burner circuit if flue spillage occurs
(because of improper venting of combustion
products or vent blockage). If, during appliance
operation, the burner flame goes out (independently of the burner OFF/ON wall switch), it may
be due to the operation of this (safety limit) spill
switch. If this switch "trips" it will need to be
manually reset by pressing the reset button on
switch (see Figure 36).
Procedure to Reset (safety limit) Spill Switch
ALLOW APPLIANCE TO COOL COMPLETELY
BEFORE ACCESSING AND RESETTING
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 and lock in).
The appliance should then relight and remain
lit. If this does not occur, turn off the appliance
and call a qualified service technician.
Step 12. HOOD INSTALLATION
All of these appliances must have hoods
installed prior to operating on all sides with
glass enclosure panels.
On all clean face units (with optional radiant
panels), slide the hoods into the slots on the lower
edges of the radiant panel (Figure 37).
FINISHING REQUIREMENTS
(Wall Details)
Complete finished interior wall. To install the
appliance facing flush with the finished wall,
position framework to accommodate the thickness of the finished wall (Figure 37)
See Page 5 for Cold Climate Insulation and
Page 7 for Clearances.
SPILL SWITCH
Figure 36
20
Remove Top Louvered
Panel (or optional radiant
panel, if applicable)
Press Reset
Button on Spill
Switch
Figure 37 - FINISHING REQUIREMENTS
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Step 13. ATTACHING SAFETY-IN-OPERATION WARNINGS
It is the installer's responsibility to ensure these warnings are properly affixed during installation. These warning labels are a
critical step in informing consumers of safe operation of this appliance.
ATTACHING SAFETY-IN-OPERATION
WARNINGS
Your fireplace has been furnished with safety instruction labels that are to be affixed to the operation and
control point of the fireplace. A safety instruction
label should be affixed to the wall switch plate where
the fireplace is turned on and off (See Figure A) and
if used on the remote control handheld transmitter
(Figure B). The warnings should already have been
put in place when the fireplace initial set-up was
completed. If they are not affixed at these spots,
locate the multi-lingual adhesive labels provided with
these instructions and proceed as follows:
1. Locate the wall switch that controls the fireplace
(verify the switch operates the fireplace by turning it on and off). Clean the wall switch plate
thoroughly to remove any dust and oils. Affix the
label to the surface of the plate of the wall switch
that controls the fireplace (Figure A). Choose
the language primarily spoken in the home.
2. If a remote control is used to control the fireplace,
locate the transmitter and clean it thoroughly
to remove any dust and oils. Affix the label to
the surface of handheld transmitter (Figure B).
Choose the language primarily spoken in the
home.
3. If you are unable to locate the labels, please call
Lennox Hearth Products or your nearest Lennox
Hearth Products dealer to receive additional
safety instruction labels free of charge.
Cat. No. H8024 Replacement Label Kit
LENNOX HEARTH PRODUCTS
1-800-9-LENNOX
Note: English is red text on clear label. French and
Spanish are white text on black label.
APPOSITION DES MISES EN GARDE RELATIVES
À LA SÉCURITÉ D’UTILISATION
Votre foyer a été livré avec des étiquettes de sécurité qui
doivent être collées à côté des dispositifs de contrôle
du foyer. Une étiquette de sécurité devrait être collée
sur la plaque de l’interrupteur contrôlant l’allumage du
foyer (voir Figure A) et, le cas échéant, sur le boîtier
de la télécommande (Figure B). Les mises en garde
auraient dû être collées au moment de l’installation
initiale du foyer. Si ce n’est pas le cas, prenez les
étiquettes adhésives multilingues fournies avec ces
instructions et procédez comme suit:
1. Repérez l’interrupteur qui contrôle le foyer (vérifiez
que l’interrupteur contrôle le fonctionnement du
foyer en le faisant basculer de Marche à Arrêt, et
vice-versa). Nettoyez soigneusement la plaque
murale de l’interrupteur pour éliminer la poussière
et les traces de graisse ou d’huile. Collez l’étiquette
sur la surface de la plaque de l’interrupteur mural
qui contrôle le foyer (Figure A). Choisissez la langue
qui est principalement parlée dans la résidence
du propriétaire.
2. Si une télécommande est utilisée pour contrôler
le foyer, nettoyez la soigneusement pour éliminer
la poussière et les traces de graisse ou d’huile.
Collez l’étiquette sur le boîtier de la télécommande
(Figure B). Choisissez la langue qui est principalement parlée dans la résidence du propriétaire.
3. Si vous ne trouvez pas les étiquettes, veuillez
appeler Lennox Hearth Products ou votre distributeur Lennox Hearth Products local pour recevoir
gratuitement des étiquettes supplémentaires.
Étiquettes de remplacement, n° cat. H8024
LENNOX HEARTH PRODUCTS
1-800-9-LENNOX
Remarque : Le texte anglais est rouge sur un support
transparent. Le texte français et espagnol est blanc
sur un support noir.
COLOCACIÓN DE ADVERTENCIAS DE
SEGURIDAD EN OPERACIÓN
Su chimenea incluye etiquetas de instrucciones de
seguridad que deben colocarse en el punto de operación
y control de la chimenea. Se debe colocar una etiqueta
de instrucciones de seguridad en la placa del interruptor
de pared desde el cual se enciende y se apaga la
chimenea (ver la Figura A) y en el transmisor de control
remoto (Figura B) si se usa. Las advertencias ya deben
haberse colocado cuando se completó la instalación
inicial de la chimenea. Si no están colocadas en estos
lugares, encuentre las etiquetas adhesivas multilingües
proporcionadas con estas instrucciones y prosiga de
la siguiente manera:
1. Identifique el interruptor de pared que controla
la chimenea (verifique que el interruptor opera la
chimenea encendiéndola y apagándola). Limpie
bien la placa del interruptor de pared para quitar el
polvo y aceite. Pegue la etiqueta en la superficie de
la placa del interruptor que controla la chimenea
(Figura A). Seleccione el idioma que más se habla
en la casa.
2. Si se usa un control remoto para controlar la
chimenea, encuentre el transmisor y límpielo bien
para quitar el polvo y aceite. Pegue la etiqueta en la
superficie del transmisor (Figura B). Seleccione el
idioma que más se habla en la casa.
3. Si no puede encontrar las etiquetas, sírvase llamar
a Lennox Hearth Products o al distribuidor de
Lennox Hearth Products más cercano para recibir
etiquetas de instrucciones de seguridad adicionales
gratuitas.
Juego de etiquetas de repuesto - Nº de cat. H8024
LENNOX HEARTH PRODUCTS
1-800-9-LENNOX
Nota: La etiqueta en inglés es transparente con texto
rojo. Las etiquetas en francés y español son negras
con texto blanco.
SAFETY LABEL
DIAGRAMS
Figure A
DIAGRAMMES DES ÉTIQUETTES
DE SÉCURITÉ
Figure B
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
DIAGRAMAS DE ETIQUETAS
DE SEGURIDAD
21
GAS CONVERSION KITS
WARNING
This conversion kit shall be installed by a qualified service agency in accordance with the manufacturer’s instructions and all applicable codes and
requirements of the authority having jurisdiction. If the information in these
instruction is not followed exactly, a fire, explosion or production of carbon
monoxide may result causing property damage, personal injury or loss of
life. The qualified service agency is responsible for the proper installation
of this kit. The installation is not proper and complete until the operation
of the converted appliance is checked as specified in the manufacturer’s
instructions supplied with the kit.The qualified service agency performing
this installation assumes responsibility for this conversion.
AVERTISSEMENT
Cette trousse de conversion doit être installée par un technicien agréé,
selon les instructions du fabricant et selon toutes les exigences et tous les
codes pertinents de l’autorité compétente. Assurez-vous de bien suivre
les instructions dans cette notice pour réduire au minimum le risque
d’incendie, d’explosion ou la production de monoxyde de carbone pouvant
causer des dommages matériels, des blessures ou la mort. Le tecnicien
agréé est responsable de l’installation de cette trousse. L’installation n’est
pas adéquate ni complète tant que le bon fonctionnement de l’appareil
converti n’a pas été vérifié selon les instructions du fabricant fournies avec
la trousse. Le fournisseur de service qualifié ayant réalisé l'installation
assume les responsabilités liées à la conversion.
In Canada:
THE CONVERSION SHALL BE CARRIED OUT IN ACCORDANCE WITH THE
REQUIREMENTS OF THE PROVINCIAL
AUTHORITIES HAVING JURISDICTION
AND IN ACCORDANCE WITH THE REQUIREMENTS OF THE CAN/CSA-B149.1
INSTALLATION CODE.
LA CONVERSION DEVRA ÊTRE EFFECTUÉE CONFORMÉMENT AUX RECOMMANDATIONS DES AUTORITÉS
PROVINCIALES AYANT JURIDICTION
ET CONFORMÉMENT AUX EXIGENCES
DU CODE D'INSTALLATION CAN/CSAB149.1.
GCK-MPB40MPN H2014
Millivolt SIT Systems
Natural Gas To Propane Gas
Conversion Kits
Models Catalog No.
GCK35STMPN H3360
Millivolt SIT Systems
Propane Gas to Natural Gas
Conversion Kits
Models Catalog No.
Air Shutter
Adjustment Lever
Electronic Systems
Natural Gas To Propane Gas
Conversion Kits
Models Catalog No.
GCK35STENP H3361
Electronic Systems
Propane Gas To Natural Gas
Conversion Kits
Models Catalog No.
GCK-MP40EPN 26M65
INSTALLATION INSTRUCTIONS
Step 1. TURN OFF THE GAS SUPPLY TO THE
APPLIANCE and disconnect power supply at the
circuit breaker. Ensure appliance is cold.
CAUTION: THE GAS SUPPLY SHALL BE
SHUT OFF PRIOR TO DISCONNECTING THE
ELECTRICAL POWER, BEFORE PROCEEDING WITH THE CONVERSION.
ATTENTION. AVANT D’EFFECTUE R
LA CONVERSION, COUPEZ D’ABORD
L’ALIMENTATION EN GAZ, ENSUITE,
COUPEZ L’ALIMENTATION ÉLECTRIQUE.
Step 2. Remove the front glass door/frame.
See Figure 33.
a. Remove the control compartment door (see
Removing Control Compartment Door, Page
14).
c. Remove the glass panel enclosure (on valve
access side) - 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.
d. Swing the bottom of the door out and raise
it slightly to lift the top flange of the door
frame away from the appliance.
Step 3. Carefully remove the logs. Exercise
care so as not to break the logs.
Step 4. Referring to Figure 38, remove the
burner.
Pan Burner
Gas conversion kits are available to adapt
your appliance from the use of one type of
gas to the use of another. These kits contain
all the necessary components needed to
complete the task including labeling that must
be affixed to ensure safe operation.
Kit part numbers are listed here and the
following steps detail the conversion procedure. Refer to the instructions provided
with the conversion kit when performing any
gas conversion.
22
Venturi Tube
Arm
Valve Access Side
of Fireplace
Firebox Subfloor
Figure 38
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
P
S
I
OFF
I
ON
CONTROL
I
G
N
I
T
E
Step 5. Refer to Figure 39 and the instruc-
tions provided with the kit. Using a Torx T20
(with 1/4” shank and center hole), remove and
discard the three pressure regulator mounting
screws. Remove the pressure regulator, spring,
poppet, diaphragm and bushing. Discard all
removed components. Ensure the rubber
gasket installed on the back of the replacement
pressure regulator is properly positioned and
install the new pressure regulator using the new
screws supplied with the kit. Tighten screws
to 25 In. lb. torque.
Pressure
Regulator
Remove
These
Components
Figure 39
Step 5. Refer to Figure 40 and remove the
pilot hood assembly to access the hexed pilot
orifice. Remove and replace the orifice with
the one provided with the kit.
Gas Valve
Assembly
Manifold
Pressure
Test Port
Slotted
Cap
Adjusting
Screw
Spring
Figure 41
Exercise extreme care to prevent damage to
or breakage of the igniter assembly.
Remove the screw securing the pilot assembly
to its mounting bracket. Back off the flare nut
at the end of the pilot gas line to free the pilot
assembly from the gas line. Remove the pilot
orifice and replace it with the one provided with
the conversion kit. Reinstall the pilot assembly
by reversing the steps detailed here.
When reinstalling the igniter assembly, use
extreme care to prevent damage and breakage. Do not apply any leverage to the igniter
assembly while restoring the retainer clip to
its original position.
Pilot
Orifice
Pilot
Assembly
Igniter
Assembly
b. Install the burner as shown in Figure 38.
Ensure that the arm of the venturi of the burner
is hooked onto the air shutter adjustment lever
(refer to Figure 38 on Page 22). The primary
air opening can be adjusted by rotating the
adjustment lever from beneath the firebox
floor. Refer to Figure 35 on Page 19 for the
recommended minimum primary air shutter
opening setting.
Burner Orifice Sizes (all models)
Elevation
Feet (meters)
0 - 4500
(0-1372)
* Standard size installed at factory
Natural
Gas
drill size (inches)
#37 *
(.104")
Propane
Gas
drill size (inches)
1.55
mm *
(.061")
Table 8
Figure 43
BURNER POSITIONING
Pilot Assembly
Pilot
Orifice
Figure 40
Electronic Appliances
Step 6. Honeywell Electronic Valves - See
Figure 41 and the instructions provided with
the kit. Remove the slotted cap screw, o-ring,
pressure-regulating adjusting screw and spring.
Retain all parts for possible later use. Install
new components from the kit. Black cap and
red spring for propane gas appliances. Silver
cap and stainless steel spring for natural gas
appliances. Before installing the cap, attach
manometer to the manifold side pressure test
fitting and adjust screw until pressure reads
3.5 inches water column (0.87 kPa) for natural
gas, and 10.0 inches water column (2.49 kPa)
for propane gas.
See Figure 42 and replace the pilot orifice as fol-
lows: Remove the igniter assembly retainer clip,
and carefully remove the igniter assembly.
Flare Nut
Note: If the igniter is damaged, a replacement kit
is available, order Catalog No. 87L54.
Retaining
Clip
Figure 42
All Models
Step 7. (Refer to Figure 38 on Page 22 and
Figure 43)
VERIFY THE PROPER ORIFICE SIZE BEFORE INSTALLING IT.
a. Remove the orifice from the manifold and
replace it with the one provided in the kit. Table
8 shows the orifice sizes for natural and pro-
pane models. Figure 43 illustrates the orifice.
Use pipe joint compound or Teflon tape on all
pipe fittings before installing (ensure propane
resistant compounds are used in propane
applications, do not use pipe joint compounds
on flare fittings).
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Pan Burner
Valve Access Side
Figure 44
Step 8. Reassemble the remaining components
by reversing the procedures outlined in the
preceding steps. Use pipe joint compound or
Teflon tape on all pipe fittings before installing
(ensure propane resistant compounds are used
in propane applications, do not use pipe joint
compounds on flare fittings).
Step 9. Attach the conversion label provided
in the conversion kit to the rating plate on the
appliance.
Step 10. Turn on gas supply and test for gas
leaks.
Step 11. Attach manometer to the manifold
side pressure test fitting and verify manifold
pressure reads 3.5 inches water column (0.87
kPa) for natural gas, and 10.0 inches water
column (2.49 kPa) for propane gas.
ALWAYS TEST PRESSURES WITH THE VALVE
REGULATOR CONTROL AT THE HIGHEST
SETTING.
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 Lennox Hearth Products
P/N 850023M REV. D 01/2011
1508 Elm Hill Pike, Suite 108 • Nashville, TN 37210
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