Lennox Hearth Products B-Vent Elite LBV-3824MN User manual

1
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
FORYOURSAFETY: Donotstoreorusegasoline
orotherflammablevaporsorliquidsinthevicin-
ity of this or any other appliance.
FORYOUR SAFETY: Whatto doif yousmell gas:
• DO NOT light any appliance.
• DO NOT touch any electrical switches.
• DO NOT use any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone.
Follow your gas suppliers instructions.
• Ifyourgassuppliercannotbereached,callthe
fire department.
Installation and service must be performed by a
qualified installer, service agency or the gas
supplier.
POURVOTRESÉCURITÉ: Nepasentreposerniutiliser
d'essencenid'autrevaperursouliquidesinflammables
dans le voisinage de cet appareil ou de tout autre
appareil.
POURVOTRESÉCURITÉ: Quefairesivoussentezune
odeur de gaz:
• Ne pas tenter d'allumer d'appareil.
• Netouchezàaucuninterrupteur. Nepasvousservir
des téléphones se trouvant dans le batiment où
vous vous trouvez.
• Evacuez la piéce, le bâtiment ou la zone.
• Appeflez 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'installationetservicedoitêtreexécutéparunqualifié
installer,agence deservice oule fournisseurde gaz.
INSTALLATION
INSTRUCTIONS
B-VENT ELITE®SERIES
B-VENTED GAS APPLIANCES
P/N 504,137M REV. L 03/2007
MODELS
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
Millivolt Models Electronic Models
LBV-3824MN LBV-3824EN
LBV-3824MP LBV-3824EP
LBV-3824MN-H LBV-3824EN-H
LBV-3824MP-H LBV-3824EP-H
LBV-4324MN LBV-4324EN
LBV-4324MP LBV-4324EP
LBV-4324MN-H LBV-4324EN-H
LBV-4324MP-H LBV-4324EP-H
This appliance may be installed in an aftermar-
ket permanently located, manufactured home
(USA only) or mobile home, where not prohib-
itedby localcodes.This applianceis onlyforuse
with the type of gas indicated on the rating plate.
Thisapplianceisnotconvertibleforusewithother
gases, unless a certified kit is used.
OTL Report No. 116-F-18-05
WARNING:IFTHEINFORMATIONINTHISMANUAL
IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLO-
SION MAY RESULT CAUSING PROPERTY DAM-
AGE, PERSONAL INJURY OR LOSS OF LIFE.
AVERTISSEMENT: ASSUREZ-VOUS DE BIEN SUIVRE
LESINSTRUCTIONSDONNÉDANSCETTENOTICEPOUR
RÉDUIRE AU MINIMUM LE RISQUE D'INCENDIE OU
POUR ÉVITER TOUT DOMMAGE MATÉRIEL, TOUTE
BLESSURE OU LA MORT.

2NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
TABLE OF CONTENTS
Packaging........................................ page 2
Introduction..................................... page 2
General Information......................... page 2
Location .......................................... page 3
Appliance Specifications.................. page 4
Clearances ....................................... page 4
Gas Vent Rule.................................. page 4
Framing Specifications .................... page 5
Assembly Steps............................... page 5
Installation....................................... page 6
Vent System Installation.................. page 7
Field Wiring ..................................... page 7
Connecting Gas Line........................ page 8
Outside Air Kit Installation ............... page 8
Log and Rockwool Installation ........ page 9
Appliance Operation ........................ page 10
Manual Limit Switch........................ page 10
Millivolt Appliance Checkout............ page 11
Electronic Appliance Checkout......... page 11
Adjustments .................................... page 11
Finishing Requirements................... page 12
Cold Climate Insulation.................... page 12
Installation Accessories................... page 12
Gas Conversion Kits.................. page 13
Nominal operating pressures for the manifold
side of the gas control system are; 3.5 inches
water column (0.87 kPa) for natural gas mod-
els and 10 inches water column (2.49 kPa) for
propane gas models.
Donotusetheseappliancesifanyparthasbeen
under water. Immediately call a qualified, pro-
fessional service technician to inspect the ap-
pliance and to replace any parts of the control
system and any gas control which have been
under water.
Ne pas se servir de cet appareil s'il a été plongé
dansl'eau,complètementouenpartie. Appeler
untechnicienqualifiépourinspecterl'appareilet
remplacertoutepartiedusystèmedecontrôleet
toutecommande qui ont été plongés dans l'lau.
GENERAL INFORMATION
Note: Installation and repair should be per-
formedbyaqualifiedserviceperson.Theappli-
ance should be inspected annually by a quali-
fied professional service technician. More fre-
quent inspections and cleanings may be re-
quired due to excessive lint from carpeting,
bedding material, etc. It is imperative that the
control compartment, burners and circulating
airpassagewaysoftheappliancebekeptclean.
S'assurerquelebrùleuretlecompartimentdes
commandes sont propres. Voir les instruc-
tions d'installation et d'utilisation qui
accompagnent l'apareil.
Provide adequate clearances around air open-
ings and adequate accessibility clearance for
service and proper operation. Never obstruct
the front openings of the appliance.
DO NOT ATTEMPT TO ALTER OR MODIFY
THECONSTRUCTIONOFTHEAPPLIANCEOR
ITS COMPONENTS. ANY MODIFICATION OR
ALTERATION MAY VOID THE WARRANTY,
CERTIFICATIONANDLISTINGSOFTHISUNIT.
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 dan-
gerous.
Inputofappliancesare45,000and50,000BTU/
HR for LBV-3824 and LBV-4324 respectively.
This installation manual will help you obtain a
safe,efficient,dependableinstallationforyour
appliance and vent system.
Please read and understand these
instructions before beginning your
installation.
INTRODUCTION
The millivolt appliances are designed to oper-
ateoneithernaturalorpropanegas.Amillivolt
gas control valve with piezo ignition system
provides safe, efficient operation.
The electronic appliances are designed to op-
erate on either natural or propane gas. An
electronic intermittent pilot system provides
safe, efficient operation. External electrical
power is required to operate these units.
TheseappliancescomplywithNationalSafety
Standards and are tested and listed by Omni-
Test Laboratories (Report No. 116-F-18-5) to
ANSI Z21.50b-2002 (in Canada, CSA-2.22b-
2002), and CAN/CGA-2.17-M91 in both USA
and Canada, as vented gas fireplaces.
Installation must conform to local codes. In
the absence of local codes, installation must
comply with the current National Fuel Gas
Code,ANSIZ223.1(NFPA54).(InCanada,the
currentCAN/CGAB149installationcode.)Elec-
tricalwiringmust complywithlocalcodes. In
the absence of local codes, installation must
be in accordance with the National Electrical
Code, NFPA 70 - (latest edition). (In Canada,
thecurrentCSAC22.1CanadianElectricCode.)
PACKAGING
The assembled vented gas fireplace is pack-
aged with:
1 - one cartonedlog set located in firebox
area.
2 - one bag of glowing embers (rockwool)
located in the bottom compartment.
3 - one envelope containing the literature
packagewhichconsistsofthehomeowner's
manual, installation instructions, and war-
ranty;envelopeislocatedinthecontrolarea.
4 - one B-Vent Connector taped to the top of
the unit.
Gas Orifice Size
Type Elevation
0 - 4500'
(0 - 1370 m)
0 - 4500'
(0 - 1370 m)
Natural Propane
#30 #47
#48
0.125
in.
LBV-3824
LBV-4324
WARNING: THESE FIREPLACES ARE
VENTEDDECORATIVEGASAPPLIANCES.
DONOT BURN WOOD OR OTHER MATE-
RIAL IN THESE APPLIANCES.
WARNING: IMPROPER INSTALLATION,
ADJUSTMENT, ALTERATION, SERVICE
OR MAINTENANCE CAN CAUSE INJURY
ORPROPERTYDAMAGE. REFERTOTHIS
MANUAL. FOR ASSISTANCE OR ADDI-
TIONAL INFORMATION CONSULT A
QUALIFIED INSTALLER, SERVICE
AGENCY OR THE GAS SUPPLIER.

3
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Carbon Monoxide Poisoning: Early signs of
carbon monoxide poisoning are similar to the
fluwithheadaches,dizzinessand/ornausea.If
youhavethesesigns,obtainfreshairimmedi-
ately. Turn off the gas supply to the appliance
and have it serviced by a qualified profes-
sional, as it may not be operating correctly.
Inselectingthelocation,theaestheticandfunc-
tionaluseoftheapplianceareprimaryconcerns.
However,ventsystemroutingtotheexteriorand
accesstothefuelsupplyarealsoimportant.Due
to high temperatures the appliance should be
locatedoutoftrafficandawayfromfurnitureand
draperies.Considerationshouldbegiventotraf-
fic ways, furniture, draperies, etc., due to el-
evatedsurfacetemperatures.Thelocationshould
also be free of electrical, plumbing or other
heating/air conditioning ducting.
The appliance should be mounted on a fully
supported base extending the full width and
depthoftheunit.Theappliancemaybelocated
on or near conventional construction materi-
als.However,ifinstalledoncombustiblemate-
rials, such as carpeting, vinyl tile, etc., a metal
or wood barrier covering the entire bottom
surface must be used.
These appliances may be used for bedroom
installations in the United States and are listed
accordingly. Theseunitsmaynotbeinstalled
in bedrooms in Canada.
Theseappliancesareequippedwithaninte-
gral combustion air door and actuator arm.
Combustionairkitsareoptionalandmustbe
installedbeforeremovingthesecuringscrew
allowing the movement of the combustion
air actuator arm (see Step 7 on page 8).
Testgageconnectionsareprovidedonthefront
ofthemillivoltgascontrolvalves(identifiedOUT
for the manifold side and IN for inlet pressure
sideforbothSITandHoneywellequippedappli-
ances. A ¹⁄₈" NPT test gage connection is pro-
vided on the electronic gas control valve adja-
cent to the outlet to the main burner.
Minimuminletgas pressuretotheapplianceis
5.0inches watercolumn(1.24 kPa)fornatural
gasand11 incheswatercolumn(2.74kPa)for
propane for the purpose of input adjustment.
Maximum inlet gas supply pressure to the
applianceis10.5incheswatercolumn(2.61kPa)
for natural gas and 13.0 inches water column
(3.23 kPa) for propane.
The appliance must be isolated from the gas
supplypipingsystem(byclosingitsindividual
manual shut-off valve) during any pressure
testingof thegassupply pipingsystemat test
pressures equal to or less than ¹⁄₂ psig (3.5)
kPa).
The appliance and its individual shut-off valve
must be disconnected from the gas supply
piping system during any pressure testing of
that system at pressures in excess of ¹⁄₂ psig
(3.5 kPa).
These appliances must not be connected to a
chimney or flue serving a separate solid fuel
burning appliance.
LOCATION
Figure 1
Millivolt appliances may be fitted at time of
manufacture with either a Honeywell millivolt
gascontrolvalveorasSITmillivoltgascontrol
valve. Both valves have been tested with and
approvedforusewiththeseappliancesandare
listed accordingly.
This appliance may be installed in an after-
market 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
ontherating plate.Thisappliance isnotcon-
vertible for use with other gases, unless a
certified kit is used.
Cetappareil peutêtre installédans un maison
préfabriquée(É.-U.seulement)oumobile déjà
installée àdemeure si les réglements locaux
le permettent. Cet appareil doit être utilisé
uniquement avec les types de gaz indiqués
sur la plaque signalétique. Ne pas l'utiliser
avecd'autres gaz saufsi unkit de conversion
certifiéest installé.
Do not place clothing or other materials on or
near this appliance.
Typical Locations
AVERTISSEMENT: SURVEILLER LES
ENFANTS. GARDERLESVÊTEMENTS,
LESMEUBLES,L'ESSENCEOUAUTRES
LIQUIDESÀVAPEUR INFLAMMABLES
LIN DE L'APPAREIL.
WARNING: FAILURE TO COMPLY WITH
THEINSTALLATIONANDOPERATINGIN-
STRUCTIONSPROVIDEDINTHISDOCU-
MENT WILL RESULT IN AN IMPROP-
ERLY INSTALLED AND OPERATING AP-
PLIANCE,VOIDINGITSWARRANTY. ANY
CHANGE TO THIS APPLIANCE AND/OR
ITSOPERATINGCONTROLSISDANGER-
OUS. IMPROPERINSTALLATIONORUSE
OF THIS APPLIANCE CAN CAUSE SERI-
OUS INJURY OR DEATH FORM FIRE,
BURNS, EXPLOSION OR CARBON MON-
OXIDE POISONING.
WARNING: THISAPPLIANCEMAYONLY
BEFITTEDWITHDOORSCERTIFIEDFOR
USE WITH THE APPLIANCE.
AVERTISSEMENT:POURUTILISATION
UNIQUEMENT AVEC LES PORTES EN
VERRECERTIFIÊESAVECL'APPAREIL.
WARNING: B-VENTAPPLIANCESARENOT
DESIGNED TO OPERATE IN NEGATIVELY
PRESSUREDENVIRONMENTS(PRESSURE
WITHIN THE HOME IS LESS THAN PRES-
SURES OUTSIDE). SIGNIFICANT NEGA-
TIVELY 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
THESEAPPLIANCESINNEGATIVELYPRES-
SURED ENVIRONMENTS.
WARNING: CHILDREN AND ADULTS
SHOULD BE ALERTED TO THE HAZARDS
OFHIGHSURFACETEMPERATURES.USE
CAUTION AROUND THE APPLIANCE TO
AVOID BURNS OR CLOTHING IGNITION.
YOUNG CHILDREN SHOULD BE CARE-
FULLYSUPERVISEDWHENTHEYAREIN
THE SAME ROOM AS THE APPLIANCE.
WARNING: DO NOT PLACE CLOTHING
OR OTHER FLAMMABLE MATERIALS
ON OR NEAR THIS APPLIANCE.

4NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Venting
GasVentRule–Gasventcapsarenotpermit-
ted within 8 feet (2.4 mm) of a vertical wall or
similar obstruction. Gas vent caps that are
located8'ormorefromaportionofabuilding
which extends at an angle greater than 45°
upward from the horizontal may terminate in
accordancewith Table 1 (Figure 3) ,provided
thatinnocaseshallanydischargeopeningon
the cap be less than 2' (610 mm) horizontally
fromthe roof surface (National Fuel GasCode
ANSI Z223.1 (NFPA 54) 7.6.2) (CAN/CGA
B149).
CLEARANCES
Minimum clearance to combustibles for the ap-
pliance is as follows: sides and back - ¹⁄₂" (13
mm),floor-0"(0mm),adjacentwall-0"(0mm),
ceiling - 37 ¹⁄₂" (953 mm).
APPLIANCE SPECIFICATIONS
Figure 2
Table 1
Note: Venting terminals shall not be recessed
into a wall or siding.
Flat to 6/12 1' 0" 0.3
Over 7/12 to 9/12 2' 0" 0.6
Over 10/12 to 12/12 4' 0" 1.2
Over 13/12 to 16/12 6' 0" 1.8
Over 17/12 to 21/12 8' 0" 2.4
Roof Slope
Minimum Height
from Roof to Lowest
Discharge Opening
Feet Meters
Figure 3
Roof Pitch is X/12
12 X
Minimum Height from Roof
to Lowest Discharge Opening
25 ⁵⁄₈"
Gas Line
Access
Left Side View Right Side View
49 ³⁄₄"
25 ⁵⁄₈"
Top View
Gas Line
Access
Junction
Box
3 ¹⁄₂"7 ¹⁄₄"
10 ¹⁄₂"
6 ¹⁄₂"
3 ¹⁄₄"
15 ¹⁄₂"
11"
Combustion
Air Inlet
Front View
11 ¹⁄₂"
3824 - 38"
4324 - 43 ¹⁄₂"
24 ⁵⁄₈"
8"
8"
B-Vent
9 ³⁄₄"
25 ⁵⁄₈"
44 ¹⁄₈"
12 ⁷⁄₁₆"
44 ¹⁄₈"
3824 - 5"
4324 - 4 ³⁄₈"
Electrical Outlet
3824 - 26 ⁵⁄₁₆"
4324 - 31 ¹⁄₁₆"
3824 - 48"
4324 - 52 ³⁄₄"3824 - ⁵⁄₈"
4324 - ¹⁄₂"
49 ³⁄₄"
3824 - 48"
4324 - 52 ³⁄₄"

5
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
FRAMING SPECIFICATIONS
Figure 4
Figure 5
Figure 6
Framing Dimensions
ASSEMBLY STEPS
The typical sequence of installation follows,
however, each installation is unique resulting
in variations to those described.
1. Construct the appliance framing.
2. Route gas supply line to appliance location.
3. Position the appliance.
4.Installtheventsystemandexteriortermina-
tion.
5.Fieldwireandinstalloperatingcontrolswitch.
6. Make connection to gas supply.
7. Install (optional) outside Air Kit.
8. Install the logs and rockwool.
9. Checkout appliance operation.
10. Adjust burner to ensure proper flame ap-
pearance.
PRE-INSTALLATION NOTES
The fireplace may be installed directly on a
combustiblefloor orraisedon aplatformof an
appropriate height. Do not place fireplace on
carpeting,vinylorothersoftfloor coverings.It
may, however, be placed on flat wood, ply-
wood,particleboardorotherhardsurfaces.Be
surefireplace rests on asolidcontinuousfloor
or platform with appropriate framing for sup-
portandsothatno cold air can enter the room
from under the fireplace.
The fireplace may be positioned and then the
framing built around it, or the framing may be
constructed and the fireplace positioned into
the opening.
Usually, no special floor support is needed for
the fireplace, however, to be certain:
1. Estimate the total weight of the fireplace
system and surround materials such as brick,
stone, etc., to be installed.
2. Measure the square footage of the floor
spacetobeoccupiedbythesystem,surrounds
and hearth extensions.
3. Note the floor construction, i.e. 2 x 6’s, 2 x
8’sor2x10’s,singleordoublejoists,typeand
thickness of floor boards.
Note: All framing dimensions calcu-
lated for 1/2" dry wall at the appliance
face. If sheathing the chase or finish-
ingwithotherthicknessmaterials,cal-
culations will need to be made.
Figure 7
Header
B
A
Fireplace Framing
FOAK
Combustion
Air Kit
A
Outside Chase
G
C
J
Back Wall of Chase/Enclosure
Including Finishing Materials
if any
Rough Framing Face
(Unfinished Shown)
Optional Locations
FATO Adapter
(Optional)
Corner Installation
KD
C
A
E
GF
Back Wall of Chase/Enclosure
Including Finishing Materials
if any
Rough
Framing Face
(Unfinished Shown)
FOAK-4
Combustion
Air Kit
Fireplace Opening Width
48 ¹⁄₈"
(1222 mm)
A
B
C
D
E
52 ⁷⁄₈"
(1343 mm)
50"
(1270 mm) 50"
(1270 mm)
26 ¹⁄₄"
(667 mm) 31"
(787 mm)
13 ¹⁄₈"
(334 mm) 15 ¹⁄₂"
(394 mm)
77 ¹⁄₄"
(1962 mm) 82"
(2083 mm)
3824 4324
38 ⁵⁄₈"
(981 mm)
F
G
H
J
K
41"
(1041 mm)
25 ⁵⁄₈"
(650 mm) 25 ⁵⁄₈"
(650 mm)
4"
(102 mm) 4"
(102 mm)
11"
(279 mm) 11"
(279 mm)
54 ⁵⁄₈"
(1388 mm) 58"
(1473 mm)
C
A
G
Inside Chase
HH
Back Wall of Chase/Enclosure
Including Finising Materials
if any
Rough
Framing Face
(Unfinished Shown)
FOAK
Combustion
Air Kit

6NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
IMPORTANT: UNDER NO CIRCUMSTANCES
CAN THE FIREPLACE TOP SPACERS
(refer to
FIGURE2) BEREMOVEDORMODIFIED,NOR
MAY YOU NOTCH THE HEADER TO FIT
AROUND OR BE INSTALLED LOWER THAN
THE SPACERS. THE HEADER MAY BE IN DI-
RECT CONTACT WITH THE TOP SPACERS
BUT MAY NOT BE SUPPORTED BY THEM.
Fireplace should be secured to side framing
members using the full length ¹⁄₂ inch nailing
flanges that are integral to the appliance at
each side. Use 8d nails (Figure 9 ) .
All appliances are equipped with a gas flex line
and shutoff valve attached directly to the gas
control valve. To quickly and easily complete
the gas line routing, use the gas flex line kit.
Step 3. Position the Appliance - Slide the
fireplaceintopreparedframingorpositionfire-
place in its final position and frame later.
4. Use this information and consult your local
building code to determine if you need addi-
tional support.
If you plan to raise the fireplace and hearth
extension, build the platform assembly then
positionfireplaceandhearthextension on top.
Secure the platform to the floor to prevent
possible shifting.
INSTALLING THE FIREPLACE
Step 1. Construct the Appliance Framing -
Frame appliance enclosure as illustrated in
Figures 4 through 7 on page 5 .
Note:Theframeddepth,25
⁵⁄₈ " (650mm)from
a framed wall, must always be measured from
a finished surface. If a wall covering such as
drywall is to be attached to the rear wall, then
the 25
⁵⁄₈ " (650 mm) must be measured from
the drywall surface. It is important that this
dimension be exact.
If the appliance is to be elevated above floor
level, a solid continuous platform must be
constructed.
The header may rest on the top metal spacers,
but must not be notched to fit around them.
Consult all local codes.
Step 2. Route Gas Supply Line - Route gas
line (Figure8) usingtechniquesandmaterials
prescribedbylocaland/ornationalcodes. Itis
recommended that a gas line of ¹⁄₂" or greater
diameter be used to allow full gas volume to
thefireplace.Unduepressurelosswilloccurif
thepipe is too small. The appliance, assetup
atthe factory, is best suited for use with a gas
lineroutedfromtheleftside. Thegaslinemay
however be alternately routed from the right
side.
When rigid pipe is used, an ANSI approved
manual shut-off valve and union must be in-
stalled upstream of the fireplace.
Ensure that a sediment trap is installed in the
existinggas line, ifnot,installa sediment trap
upstream to prevent moisture and contami-
nants from passing through trap to the appli-
ance controls and burners. Failure to do so
could prevent the appliance from operating
reliably.
IMPORTANT: HOLD GAS VALVE SECURELY
TO PREVENT MOVEMENT WHEN CONNECT-
ING TO INLET GAS LINE
An external regulator must be used on all
propane (L.P.G.) heaters to reduce the supply
tank pressure to 13" w.c. (maximum). Any
coppertubing usedtosupply propane(L.P.G.)
from the tank must be internally tinned.
Fireplacemaybeanchoredtofloor.Benddown
four (4) anchor tabs located at the base of the
fireplaceandsecuretothefloor bynailing with
8d nails
(Figure 10 ).
Figure 10
Refer to fireplace drawings and specifications
on pages 4 and 5 for framing dimensions and
details. Framing header may be positioned
directly on the fireplace top spacers.
Note: The nailing tabs and the area directly
behind the nailing tabs are exempt from the
clearancesdescribedonthefireplaceclearance
label.
Figure 8
Figure 9
8d Nail
Anchor
Tab
10 ¹⁄₂"
(269 mm)
3 ¹⁄₂"
(79 mm)
RIGHT
SIDE
LEFT
SIDE
7 ¹⁄₄"
(184 mm)
3 ¹⁄₂"
(79 mm)
WARNING: CONNECTING DIRECTLY TO
AN UNREGULATED PROPANE (L.P.G.)
TANK MAY CAUSE AN EXPLOSION.

7
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Figure 11
Step 5. Field Wiring –Refer to Section A for
millivoltappliancesandSectionBforelectronic
appliances.
A. Millivolt Wiring –Unitsmaybefittedat the
factory with either a Honeywell millivolt gas
control valve or an SIT millivolt gas control
valve. Both valves have been tested with and
approvedforusewiththeseappliancesandare
listed accordingly. Refer to
Figure 13 for
wiringofHoneywellsystemsand Figure14 for
wiring of SIT systems.
Thegasvalvehasbeensetinplaceandhasbeen
pre-wired at the factory. No additional wiring is
required unless the optional wall switch or op-
tionalremotecontrolkitistobeinstalled.Locate
theoptionalwall switchoroptionalremotecon-
trol in the desired location and connect the
millivolt wire
(see Figures 13 and 14 ).
CAUTION: DO NOT CONNECT THE WALL
SWITCH TO A 120V POWER SUPPLY.
Step 4. Install the Vent System & Exterior
Termination -
A - Connect the factory-supplied B-Vent con-
nector (found taped to the top of the unit) as
shown in
Figure 11 . Press it into the lanced
protrusionsinternaltotheflueoutletcollaras
farasthehorizontalrolledseamlocatedonthe
lower part of the connector, and secure with
four sheetmetal screws (# 8 or larger).
B - Slip an 8" (203 mm) B-Vent system over
the B-Vent connector 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 12' (3.66 m) vertical
(no offset) or 17' (5.18 m) when an offset up
to 45 degrees from the vertical is used. The
lower part of the offset must not begin less
than3'(0.914m)abovethetopofthefireplace
(see Figure 12 ) .
Maximumoverallheightoftheventsystemand
applianceshould not exceed 40 feet(12.19m).
Figure 12
Figure 13
Note: Optionalwall switch notsupplied. If the
optional wall switch is not installed, the ends
of the 18' coiled wire must be connected with
a wire nut (not supplied) for the appliance to
operate.
B. Electronic Wiring –The electronic appli-
ance must be connected to the main power
supply. To install, route a 3-wire 120V 60Hz
power supply to the appliance junction box
and ground. Locate and install a low voltage
(24V)wallswitch(notsupplied)inthedesired
location. Connect the low voltage wire to this
switch
(see Figure 15 on Page 8 ).
InstalltheB-ventsysteminaccordancewith
the vent manufacturer's instructions.
CAUTION: THIS APPLIANCE CANNOT BE
VENTED HORIZONTALLY.
Note: Refer to the vent manufacturers instal-
lation instructions for variations of venting
techniques.Ifcommonventingofseveralunits
is contemplated, it should be discussed with
an architect and the local Building Depart-
ment.
Figure 14
12 ft.
Minimum 17 ft.
Minimum
45 degrees
max.
3 ft.
Minimum
to Offset
Thermopile
Damper
Switch
TH
TP
TH
TP
Honeywell Millivolt Wiring Diagram
If any of the original wire as supplied must be replaced,
it must be replaced with Type AWM 200°C –18 GA. wire.
TH
TPTH
TP
* For Wall Switch Attachment Only.
*
Limit
Switch
BK
BK
BK
BK
WT
SIT Millivolt Wiring Diagram
* For Wall Switch Attachment Only.
If any of the original wire as supplied must be replaced,
it must be replaced with Type AWM 200°C –18 GA. wire.
Thermopile
TH
TP TH
TP
Limit
Switch
Damper Switch
BK
BK
BK
BK WHT
*
8”
Type B-Vent
Lanced Flue
Outlet Collar
Factory-Supplied
B-Vent Connector
Securing
Screws
Securing
Screws
IMPORTANT:Groundleadmustbeconnected
tothegreenscrewlocatedontheoutletbox.
See
Figure18onpage9 .Failuretodosowill
result in a potential safety hazard. The ap-
pliance must be electrically grounded in
accordance with local codes or, in the ab-
senceoflocalcodes,theNationalElectrical
Code, ANSI/NFPA 70-(latest edition). (In
Canada, the current CSA C22-1 Canadian
Electrical Code.)

8NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Figure 16
1. Routea3-wire120V60Hzpowersupplyline
totheappliancejunctionboxwiresandground
(Figures 15 ).
2. After wiring is complete, replace the appli-
ancejunctionboxcoverandsecurewiththehex
head screws previously removed.
Step6. ConnectingGas Line–Make gas line
connections. All codes require a shut-off
valve mounted in the supply line. Figure 18
on page 9 illustrates two methods for con-
nectingthegassupply.Theflex-linemethod
utilizing the gas flex line provided with the
appliance is acceptable in the U.S., how-
ever, Canadian requirements vary depend-
ing on locality. Installation must be in com-
pliance with local codes.
Secure all joints tightly using appropriate
toolsandsealingcompounds(ensurepro-
pane resistant compounds are used in
propane applications).
Turn on gas supply and test for gas leaks,
usinga gas leak test solution (also referred to
as bubble leak solution).
Note: Usingasoapywatersolution(50%dish
soap, 50% water) is an effective leak test
solution but it is not recommended, because
the soap residue that is left on the pipes/
fittingscanresultincorrosionovertime. Never
use an open flame to check for leaks.
A. Light the appliance (refer to the lighting
instructions label in the control compartment
or in the Homeowner's Care and Operation
Instructions).
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 to the “OFF”posi-
tion. Either tighten or refasten the leaking
connection and retest as described above.
Figure 15
The gas control valve is located in the lower
control compartment. To access the valve
remove the refractory access panel and set
aside
(Figure 16 ).
The millivolt control valve has a ³⁄₈"
(10 mm)NPTthreadinletport.Theelectronic
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. Plan connections not
utilizing the ³⁄₈" NPT open end of the gas flex
line shutoff, accordingly.
C.Whenthe gaslinesaretestedandleakfree,
be sure to rinse off the leak testing solution.
D.Whenthegaslinesaretestedandleakfree,
observetheindividualtonguesofflameonthe
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.
Step7.OutsideAirKits–Optionalcombustion
(outside make-up air) kits, Model FOAK-4 or
FAOK-4LD, may be used with these appliances.
Refer to the installation instructions packaged
with the air kits for specific installation informa-
tion.If used, the outside airkitmustbe installed
beforethefireplaceisframedandenclosedinthe
finished wall.
Outsideairdrawnintothefireplacesuppliesair
to the fire for combustion. Only one combus-
tion air duct on the left side of the fireplace is
necessary if installed.
If additional length of duct is necessary, pur-
chase locally available U.L. Class 0 or Class 1
metallicducting.Theductmayextendupto50'
(15.24 m) in any direction.
Note:Wheninstallingtheairductvertically,DO
NOTterminatetheductcloserthan3'belowthe
chimney top.
There is one hand operated shut-off valve lo-
cated in the left side of the fireplace opening
behindthescreen.Toopen,pullthehandleout.
The combustion air damper should be fully
open when the fireplace is in use and fully
closedwhen the fireplaceisnotin operation to
prevent outside air from entering your home.
Refractory
Access Panel
SIT Valve
Shown
1. If any of the original wire as supplied must be replaced,
1. it must be replaced with Type AWM 200°C –18 GA. wire.
2. 120V, 60Hz –Less than 3 amps.
BK
Transf.
120 V.
24 V
Factory Wired Field Wired
BL
Electronic Wiring Diagram (Honeywell)
(Optional ON/OFF Switch Wiring)
R
BK
BL
OPT
FAN
LIMIT
SWITCH
W
Gas Valve
B
OPTIONAL
ON/OFF
SWITCH OR
WALL SWITCH
R
IGNITER
CONTROL
PILOT
ASSEMBLY
DAMPER
SWITCH
BK
BK
BK
BK
G
WT
Junction Box
White
Green
Red
Black
Neutral
Side of
Receptacle
Tab Intact
Green
Ground
Screw
Hot
Side of
Receptacle
Ta b
Broken
Optional
Accessory
Switch
120 VAC - Black
n
e
e
r
G-dn
u
o
r
Ge
ti
h
W
-
lar
t
u
e
N

9
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Figure 17
Note: Supplywiresmaybealternativelyconnectedtotheoutletusingthescrewterminals,however
theblacksupplywiremustbewiredtoaterminalthatisopposite(acrosstheoutlet)thepointwhere
the white supply wire is connected.
Figure 18
CAUTION: NEVER LOCATE INLET WHERE IT
CAN BE BLOCKED BY SHRUBS, SNOW
DRIFTS, ETC. NEVER LOCATE INLET IN GA-
RAGE OR ANY AREA WHERE THERE IS AN-
OTHERFUELBURNINGAPPLIANCEORPROD-
UCTSEMITTINGCOMBUSTIBLEGASESSUCH
AS PAINT, GASOLINE, ETC. IN COLD CLI-
MATES,ITISRECOMMENDEDTHECOMBUS-
TION AIR DUCT BE INSULATED.
Outside combustion air ducting may be run
upwardsorverticallythroughframingandceil-
ing joists, with the hood installed through an
outsidewalland3'(1m)belowthetermination.
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.
After installing the outside air kit, remove the
cover from the shut off lever in the left side of
the firebox opening.
Note: Do not terminate combustion air kit in
attic space under any circumstances.
Aftercompletingtheinstallationoftheoptional
combustion air vent system the actuator arm
must be put in service and tested to ensure
properoperationbeforecompletinganyenclo-
sure around the firebox. Failure to do so may
result in extensive and costly rework.
Operate the actuator through several cycles
includingtheclosedposition. Ensuringproper
operation and freedom of movement. Return
the actuator arm to the closed position.
Step 8. Installing Logs and Rockwool –The
logsare packaged within the firebox. The bag of
rockwool is in the lower control compartment.
Remove the rockwool from the packaging and
tearintodimesizepieces(seeHomeownersCare
and Operation Instructions). Do not use more
than is necessary.
White
(Supply)
Black
(Supply)
Bipolar
Terminal
Screw
120 Vac
60 Hz
Ground Wire
Connection
³₈" Nipple
Gas Stub
¹₂" x ³₈" Flare
Shut-Off Valve
³₈" Flex Tubing
³₈" NPT Flare Fitting
(Remove Before
Hard Piping)
³₈" Union
³₈" Close Nipple
³₈" Shut-Off Valve
¹₂" x ³₈" Reducer
Gas Valve
(Millivolt or
Electronic)
Gas Flex Line (provided)
Alternate “Hard Piping”
(may be required in some areas, consult local codes.)
Note: ¹₂" NPT At Inlet Of Gas Valve For Electronic Models.

10 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Figure 19
Figure 20
When first lighting the appliance, it will take a
few minutes for the line to purge itself of air.
Oncepurgingiscomplete,thepilotandburner
will light and operate as indicated in the in-
struction manual.
Refer to the Homeowners Care and Operation
Instructions for detailed log description and
placement instructions. Log set shown in this
document
(Figure 19) istypical,installationof
all sets are similar.
APPLIANCE OPERATION
Step 9. Checking the System –With gas line
installed run initial system checkout before
closingupthefrontoftheunit. Followthepilot
lighting instructions provided in the
Homeowner'sCareandOperationInstructions.
For piezo ignitor location see
Figure 20 (milli-
volt appliances only).
Note:Instructionsarealsofoundonthepullout
lighting instructions label attached to the gas
control valve.
Piezo Ignitor
Piezo Ignitor
SIT Valve
Honeywell Valve
Typical Log Set
(Refer to Owners
Manual for Details)
Subsequent lightings of the appliance will
not require such purging. Inspect the pilot
flame (remove logs, if necessary, handling
carefully).
MANUALLY-RESET BLOCKED FLUE SAFETY
SWITCH
This appliance is equipped with a manually-
reset blocked flue safety switch. Refer to
Figure 21 forits location. If during appliance
operation, the flame goes out (independently
oftheburneron/offwallswitch),itmaybedue
to the operation of this safety limit switch.
First allow the appliance to cool. Then reset
the safety switch by pushing the red reset
button.
This reset button is located on the back of the
limit switch, between the wire terminals ( see
Detail A of Figure 21
).
The appliance should then relight and remain
lit. If this does not occur, turn off the appli-
ance and call a qualified service technician.
Figure 21
Manual Reset
Limit Switch
Lintel
Extension Right Side
Refractory Panel
Reset
Button
Wire
Terminals
Detail A

11
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Figure 24
Adjustment
Toadjust the flame, position the air shutter to
the nominal setting
(Figure 24 ). Allow the
burner to operate for at least 30 minutes.
Observe the flame continuously. If it appears
weakor sooty as previously described, adjust
the air shutter open or closed until desired
effect is achieved.
Note: If the flame still appears anemic with the
airshutterclosedalltheway(usuallyaresultof
lengthyverticalventingruns),turnofftheappli-
ance,turn off the gas supply,waitforthe parts
to cool and access the air shutter. The shutter
isprevented from actuallyclosingby a tab that
is bent over into the opening. Remove this
obstruction by bending back. Reassemble and
restart the appliance and after 24 minutes
reobserve the flame. Adjust the air shutter as
described.
Figure 23
Replace logs if removed for pilot inspection.
Tolightthe burner;rotatethegasvalvecontrol
knob counterclockwise to the “ON”position
(“ON”willbe to the lefthandsideof the valve).
Turn “ON”the remote wall switch.
Electronic Appliance Checkout
To light the burner, turn ‘ON’the optional
remote wall switch and turn the gas control
switchtothe “ON”position. Ensuretheignitor
lights the pilot. The pilot flame should engulf
the flame rod as shown in
Figure 23.
Step 10. Adjustments –The following para-
graphsaddressadjustmentconcernsandpro-
cedures.
Flame Appearance and Sooting
Proper flame appearance is a matter of taste.
Generallymostpeoplepreferthewarmglowof
a yellow to orange flame. Appliances operated
with air shutter openings that are too large, or
with long vertical vent runs, will exhibit flames
thatareblueandtransparent.Theseweak,blue
and transparent flames are termed anemic.
If the air shutter opening is too small sooting
may develop. Sooting is indicated by black
puffsdevelopingatthetipsofverylongorange
flames.Sootingresultsinblackdepositsform-
ing on the logs, appliance inside surfaces and
onexteriorsurfacesadjacenttotheventtermi-
nation.Sootingiscaused byincomplete com-
bustionintheflamesandalackofcombustion
air entering the air shutter opening.
Toachieveawarmyellowtoorangeflamewith
anorangebodythatdoesnotsoot,theshutter
opening must be adjusted between these two
extremes.
No smoke or soot should be present. Reposi-
tionthelogsetiftheflamesimpingeonanyof
them.
If sooting conditions exist, the air shutter
opening on the main burner can be adjusted.
Normally,themoreoffsetsintheventsystem,
the greater the need for the air shutter to be
opened further.
Figure 22
Proper Flame
Adjustment
Hot Surface
Igniter
Flame Rod
Ground
Electrode
3/8 To 1/2 Inch
(9 mm to 13 mm)
³⁄₈" Min
(9 mm)
Hood
Pilot
Nozzels
Ignitor Rod
Orifice
Air Shutter
Burner Tube
Adjusting
Set Screw
Factory Air
Models Shutter Setting
Inches (mm)
LBV-3824
Gas
Type
Natural 1/16" (1.59 mm)
Propane 3/16" (4.76 mm)
Natural Closed
Propane 1/4" (6.35 mm)
LBV-4324
Whensatisfiedthattheapplianceoperatesprop-
erly,proceedtofinishtheinstallation.Leavethe
controlknob/leverin“ON”positionandturnthe
remote switch “OFF.”Replace the refractory
access panel.
Millivolt Appliance Checkout
The pilot flame should be steady, not lifting or
floating. Flame should be blue in color with
traces of orange at the outer edge.
The top ³⁄₈" (9 mm) at the pilot generator
(thermopile) should be engulfed in the pilot
flame. The flame should project 1" (25 mm)
beyondthehoodatallthreeports
(Figure22).
WARNING:AIRSHUTTERADJUSTMENT
SHOULD ONLY BE PERFORMED BY A
QUALIFIED PROFESSIONAL SERVICE
TECHNICIAN.

12 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Wall Switch Kit 85L87 FWSK
Outside Combustion Air Kits
(with duct) 81L87 FOAK-4
(without duct) 81L88 FOAK-4LD
INSTALLATION ACCESSORIES
Thefollowingaccessoryitemsareavailablefor
use in the installation of this appliance.
OutsideAirKitsModelsFOAK-4andFOAK-4LD
Outside Air kits are available with duct
(FOAK-4) and without duct (FOAK-4LD)
for use if outside combustion air is re-
quired or desired. If model FOAK-4LD is
used it must be used in conjunction with
locallypurchased,non-combustibleClass
1 or Class 0 flexible duct.
Wall Switch Kit FWSK
Figure 26
COLD CLIMATE INSULATION
If you live in a cold climate, 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
flooronwhich appliance rests, if floor is above
ground level.
60"
(1524 mm)
Min. to
Ceiling
12" Min.
(305 mm)
0" Clearance
to Combustible
Side Wall
Max. Projection 12" (305 mm)
Combustible
Mantel
Figure 25
12"
Min.
Fireplace
Opening
Non-combustible
Wall Covering
Spacer
Combustible
Mantel
and Trim
12"
Max.
Finished
Wall
Typical Installation
Header
FINISHING REQUIREMENTS
Wall Details and Combustible Mantels
Complete finished interior wall. To install the
appliance facing flush with the finished wall,
positionframeworktoaccommodatethethick-
ness of the finished wall (Figure 25 ) . Both
Figures25and26 showacombustiblemantel
shelf projecting a maximum of 12" (305 mm)
from the wall, and which must be installed a
minimum distance of 12" (305mm) from the
top of the firebox opening. No other mantel
length/heightcombinationsareallowableforthis
fireplace.
A hearth extension is not required with this
appliance. Any hearth extension used is for
appearanceonlyanddoesnothavetoconform
to standard hearth extension installation re-
quirements.
Note:Combustible wallfinishmaterialsand/or
surround materials must not be allowed to
encroach the area defined by the appliance
front face (black sheet metal). Never allow
combustiblematerialstobepositionedinfront
of or overlapping the appliance front face.

13
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Gas Conversion Kits
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 CAN1-B149.1
AND .2 INSTALLATION CODE.
LA CONVERSION DEVRA ÊTRE EFFECTUÉE
CONFORMÉMENTAUXRECOMMANDATIONS
DES AUTORITÉS PROVINCIALES AYANT
JURIDICTION ET CONFORMÉMENT AUX
EXIGENCESDUCODED'INSTALLATIONCAN1-
B149.1 ET.2.
Gasconversionkitsareavailabletoadaptyour
appliancefromtheuseofonetypeofgastothe
use of another. These kits contain all the nec-
essary components needed to complete the
task including labeling that must be affixed to
ensure safe operation.
Kit part numbers are listed here and the steps
that follow detail the conversion procedure.
-smetsySTIStlovilliM noisrevnoCsaGenaporPoTlarutaN stiK
sledoMepyTtinU.oNgolataC
4283-VBL tlovillim27M77
4234-VBL tlovillim5651H
-smetsySTIStlovilliM noisrevnoCsaGlarutaNotenaporP stiK
sledoMepyTtinU.oNgolataC
4283-VBL tlovillim37M77
4234-VBL tlovillim6651H
-smetsySllewyenoH stiKnoisrevnoCsaGenaporPoTlarutaN sledoMepyTtinU.oNgolataC
4283-VBL tlovillim47M77
4234-VBL tlovillim35L57
4283-VBL cinortcele7651H
4234-VBL cinortcele55L57
-smetsySllewyenoH stiKnoisrevnoCsaGlarutaNotenaporP sledoMepyTtinU.oNgolataC
4283-VBL tlovillim57M77
4234-VBL tlovillim45L57
4283-VBL cinortcele8651H
4234-VBL cinortcele65L57
WARNING: THIS CONVERSION KIT SHALL BE IN-
STALLED BY A QUALIFIED SERVICE AGENCY IN AC-
CORDANCEWITHTHEMANUFACTURER'SINSTRUC-
TIONS AND ALL APPLICABLE CODES AND REQUIRE-
MENTS OF THE AUTHORIZED AGENCY HAVING JU-
RISDICTION. IF THE INFORMATION IN THESE IN-
STRUCTIONSARENOTFOLLOWEDEXACTLY,AFIRE,
EXPLOSION OR PRODUCTION OF CARBON MONOX-
IDE MAY RESULT CAUSING PROPERTY DAMAGE,
PERSONAL INJURY OR LOSS OF LIFE. THE INSTAL-
LATIONISNOT PROPER ANDCOMPLETE UNTIL THE
OPERATION OF THE CONVERTED APPLIANCE IS
CHECKED AS SPECIFIED IN THE OWNER INSTRUC-
TIONS SUPPLIED WITH THE KIT.
AVERTISSEMENT: CET ÉQUIPEMENT DE CONVERSION
SERAINSTALLÉPARUNEAGENCEQUALIFIÉEDESERVICE
CONFORMÉMENTAUXINSTRUCTIONSDUFABRICANTET
TOUTES EXIGENCES ET CODES APPLICABLES DE
L'AUTORISÉSAVOIRLAJURIDICTION. SIL'INFORMATION
DANS CETTE INSTRUCTION N'EST PAS SUIVIE
EXACTEMENT,UN FEU, EXPLOSIONOU PRODUCTION DE
PROTOXYDEDECARBONEPEUTRÉSULTERLEDOMMAGES
CAUSER DE PROPRIÉTÉ, PERTE OU BLESSURE
PERSONNELLEDEVIE. L'AGENCEQUALIFIÉEDESERVICE
EST ESPONSABLE DE L'INSTALLATION PROPRE DE CET
ÉQUIPMENT. L'INSTALLATION N'EST PAS PROPRE ET
COMPLÉTE JUSQU'ÀL'OPÉRATION DE L'APPAREIL
CONVERTIESTCHÉQUESUIVANTLESCRITÈRESÉTABLIS
DANS LES INSTRUCTIONS DE PROPRIÉTAIRE
PROVISIONNÉES AVEC L'ÉQUIPEMENT.

14 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Electronic Appliances
Step 8. Honeywell Electronic Valves - See
Figure 31 and the instructions provided with
thekit. Removetheslottedcapscrew, 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 units.
Silvercapandstainlesssteelspringfronatural
gas units. Before installing the cap, attach
manometertothemanifoldsidepressure test
fitting and adjust screw until pressure reads
3.5incheswatercolumn(0.87kPa)fornatural
gas,and10.0 incheswater column(2.49 kPa)
for propane gas.
Figure 27
Step 5. Honeywell Systems - See Figure 28
and the instructions provided with the kit. Re-
movetheblackthread-protectingcap. Remove
the conversion flip cap by turning it counter-
clockwise. Inverttheflipcapsothattheletters
associated with the desired gas type are posi-
tioned closest to the valve body.
NG is for natural gas and LP is for propane.
Tighten the flip cap by turning it clockwise.
Replace the black thread-protecting cap.
Figure 28
Figure 29
Pressure
Regulator
Remove
These
Components
Flip Cap
Thread
Protector
Pilot
Orifice
Step 1. Turn off the gas supply to the appli-
ance. Remove the front glass door (if used)
from the appliance. Access the control com-
partment.
Step 2. Carefully remove the logs. Exercise
care as not to break the logs.
Step3.Locatethescrewssecuringtheburner
(tray) to the appliance. Remove the burner
and retain the securing screws.
Millivolt Appliances
Step 4. SIT Systems - Refer to Figure 27 and
the instructions provided with the kit. Using a
Torx T20, remove and discard the three pres-
sure regulator mounting screws. Remove the
pressureregulator, spring,poppet,diaphragm
and bushing. Discard all removed compo-
nents. Ensure the rubber gasket installed on
thebackofthereplacementpressureregulator
isproperlypositionedandinstallthenewpres-
sure regulator using the new screws supplied
withthekit. Tightenscrewsto25In.lb.torque.
Step 6. All Millivolt Systems –Attach ma-
nometer to the manifold side pressure test
fitting and verify manifold pressure reads 3.5
inches water column (0.87 kPa) for natural
gas,and10.0 incheswater column(2.49 kPa)
for propane gas.
Step 7. See
Figure 29 and remove the pilot
hood assembly to access the hexed pilot ori-
fice. Remove and replace the orifice with the
one provided with the kit.

15
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Figure 31
Figure 32
Step 10. Reassemble all removed compo-
nents by reversing the procedures outlined in
theprecedingsteps. Usepipejointcompound
orTeflontapeonallpipefittingsbeforeinstall-
ing(ensurepropaneresistantcompoundsare
used in propane applications, do not use pipe
joint compounds on flare fittings).
Step11. Attachtheconversion labelprovided
in the conversion kit to the rating plate on the
appliance.
Step 12. Turn on gas supply and test for gas
leaks. (See step 6 on page 8 .)
Exercise extreme care to prevent damage to
or breakage of the ignitor assembly.
Removethescrewsecuringthepilotassembly
toitsmounting bracket. Back off the flare nut
at the end of the pilot gas line to free the pilot
assemblyfromthe gas line. Remove the pilot
orifice and replace it with the one provided
with the conversion kit. Reinstall the pilot
assemblybyreversingthestepsdetailedhere.
When reinstalling the ignitor assembly, use
extreme care to prevent damage and break-
age. Donotapplyanyleveragetotheignitor
assemblywhilerestoring theretainerclip to
its original position.
Spring
Adjusting
Screw
Slotted
Cap
PSI
OFF
I
ON
CONTROL
IGNITE
Manifold
Pressure
Test Port
Inlet Pressure Test Port
Figure 30
Note: If the ignitor assembly is damaged, a replacement kit is available,
order Catalog Number 87L54.
Retaining
Clip
Ignitor
Assembly
Pilot
Assembly
Pilot
Orifice
Flare Nut
All Models
Step9. Unscrewtheorificefromthemanifold
and replace it with the one provided with the
kit
. Seethefollowingtablefororificesizesfor
naturaland propane models.
Figure 32 illus-
trates the orifice.
Referto
Figure30 andreplacethepilotorifice
as follows: Remove the ignitor assembly
retainer clip, and carefully remove the ignitor
assembly.
LBV
Series Natural Propane
Orifice Size
3824 0.125 in. #48
4324 #30 #47

16 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
LennoxHearthProductsreservestherighttomakechangesatanytime,withoutnotice,indesign,
materials, specifications, prices and also to discontinue colors, styles and products.
Consult your local distributor for fireplace code information.
Printed in U.S.A. © 2001 by Lennox Hearth Products
P/N 504,137M REV. L 03/2007 1110 West Taft Avenue •Orange, CA 92865