Lennox LMBV-42RMN User Manual
P/N 850041M Rev. B 07/2010
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.
WARNING: If the information in these instructions is
causing property damage, personal injury or death.
- Ne pas entreposer ni utilizer d’essence ni d’autres
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
le fournisseur de gaz.
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.
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
WARNING
AVERTISSEMENT
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.
HOT GLASS WILL
CAUSE BURNS.
DO NOT TOUCH GLASS
UNTIL COOLED.
NEVER ALLOW CHILDREN TO
TOUCH GLASS.
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.
installer, service agency or the gas supplier.
This manual is one of a set of two supporting this product.
Refer to P/N 875034M for Care and Operation Instructions.
INSTALLATION INSTRUCTIONS
B-Vent Gas Fireplaces
42" LMBV Models
MODELS
Millivolt Models
WH Report No. 3106807
LMBV-42RMN
LMBV-42RMP
Electronic Models
LMBV-42REN
LENNOX MERIT® SERIES B-VENT GAS FIREPLACES • 42" LMBV MODELS • INSTALLATION INSTRUCTIONS
TABLE OF CONTENTS
Introduction ......................................page 2
General Information ..........................page 2
Massachusetts and New York
Requirements ........................ page 2
Location ............................................page 3
Clearances ........................................page 4
Appliance Specifications ...................page 4
Gas Vent Rule ...................................page 4
Framing Specifications ......................page 5
Typical Installation Sequence ............page 5
Installation ........................................page 5
Vent System Installation ...................page 6
Field Wiring .......................................page 7
Connecting Gas Line .........................page 7
Outside Air Kit Installation .................page 7
Log and Rockwool Installation ..........page 9
Appliance Operation ..........................page 9
Manual Limit Switch .........................page 9
Millivolt Appliance Checkout .............page 9
Electronic Appliance Checkout ..........page 9
Adjustments ......................................page 10
Attaching "Safety-in-Operation"
Warnings .............................. page 11
Finishing Requirements ....................page 12
Cold Climate Insulation .....................page 12
Installation Accessories ....................page 12
Gas Conversion Kits .................. page 13
This installation manual will help you obtain a
safe, efficient, dependable installation for your
appliance and vent system.
Please read and understand these instruc-
tions before beginning your installation.
These appliances comply with National Safety
Standards and are tested and listed by Warnock
Hersey (Report No. 3106807) to ANSI Z21.50
- latest edition (in Canada, CSA 2.22 - edition
edition), 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,
ANSI Z223.1 (NFPA 54). (In Canada, the current
CAN/CGA B149 installation code.) Electrical
wiring must comply with local codes. In the
absence of local codes, installation must be in
accordance with the National Electrical Code,
NFPA 70 - (latest edition). (In Canada, the current
CSA C22.1 Canadian Electric Code.)
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.
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: ELECTRONIC MODELS OF
THESE APPLIANCES ARE EQUIPPED
WITH A THREE-PRONG (GROUNDING)
PLUG UTILIZED IN CONNECTING THE
ELECTRONIC COMPONENTS TO THE
JUNCTION BOX IN THE LOWER COMPARTMENT. THIS GROUNDING PLUG
PROVIDES PROTECTION AGAINST
SHOCK HAZARD AND SHOULD BE
PLUGGED DIRECTLY INTO THE PROPERLY GROUNDED THREE-PRONG RECEPTACLE. DO NOT CUT OR REMOVE
THE GROUNDING PRONG FROM THE
PLUG.
• 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)
These fireplaces are approved for installation
in New York City in the US state of New York,
if the following additional requirement is met:
• An outside air kit (FOAK-4 or FOAK-4LD)
must be installed. See Installation Accessories on Page 12.
GENERAL INFORMATION
Note: Installation and repair should be performed by a qualified service person. The
appliance should be inspected annually by a
qualified professional service technician. More
frequent inspections and cleanings may be
required due to excessive lint from carpeting,
bedding material, etc. It is imperative that the
control compartment, burners and circulating
air passage ways of the appliance be kept clean.
S'assurer que le brùleur et le compartiment des
commandes sont propres. Voir les instructions
d'installation et d'utilisation qui accompagnent
l'apareil.
Provide adequate clearances around air openings and adequate accessibility clearance for
service and proper operation. Never obstruct
the front openings of the appliance.
WARNING: THESE FIREPLACES ARE
VENTED DECORATIVE GAS APPLIANCES. DO NOT BURN WOOD OR OTHER
MATERIAL IN THESE APPLIANCES.
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.
Input of appliance is 30,000 BTU/HR.
INTRODUCTION
The millivolt appliances are designed to operate
on either natural or propane gas. A millivolt gas
control valve with piezo ignition system provides
safe, efficient operation.
The electronic appliances are designed to
operate on either natural or propane gas. An
electronic intermittent pilot system provides
safe, efficient operation. External electrical
power is required to operate these units.
2
Massachusetts and New York
Requirements
REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS
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.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Gas Orifice
Type Size Elevation
0 - 4500'
Natural
(0 - 1370 m)
0 - 4500'
Propane
(0 - 1370 m)
Nominal operating pressures for the manifold
side of the gas control system are; 3.5 inches
water column (0.87 kPa) for natural gas models
and 10 inches water column (2.49 kPa) for
propane gas models.
#37
(0.104)
(0.065)
LENNOX MERIT® SERIES B-VENT GAS FIREPLACES • 42" LMBV MODELS • INSTALLATION INSTRUCTIONS
Typical Locations
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 se servir de cet appareil s'il a été plongé
dans l'eau, complètement ou en partie. Appeler
un technicien qualié pour inspecter l'appareil et
remplacer toute partie du système de contrôle et
toute commande qui ont été plongés dans l'leau.
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.
Cet appareil peut être installé dans un maison
préfabriquée (É.-U. seulement) ou mobile
déjà installée à demeure 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 avec d'autres gaz sauf si un kit de
conversion certifié est installé.
Test gage connections are provided on the
front of the millivolt gas control valve (identified E for the inlet and A for the manifold
side). A 1/8" NPT test gage connection is
provided at the inlet and manifold side of
the electronic gas control valve.
Minimum inlet gas pressure to the appliance is
4.5 inches water column (1.24 kPa) for natural
gas and 11 inches water column (2.74 kPa) for
propane for the purpose of input adjustment.
Maximum inlet gas supply pressure to the ap-
pliance is 10.5 inches water column (2.61 kPa)
for natural gas and 13.0 inches water column
(3.23 kPa) for propane.
The appliance must be isolated from the gas
supply piping system (by closing its 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).
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 ue serving a separate solid fuel
burning appliance.
Do not place clothing or other materials on
or near this appliance.
WARNING: FAILURE TO COMPLY WITH
THE INSTALLATION AND OPERATING
INSTRUCTIONS PROVIDED IN THIS
DOCUMENT WILL RESULT IN AN IMPROPERLY INSTALLED AND OPERATING
APPLIANCE, VOIDING ITS WARRANTY.
ANY CHANGE TO THIS APPLIANCE AND/
OR ITS OPERATING CONTROLS IS DANGEROUS. IMPROPER INSTALLATION OR
USE OF THIS APPLIANCE CAN CAUSE
SERIOUS INJURY OR DEATH FORM
FIRE, BURNS, EXPLOSION OR CARBON
MONOXIDE POISONING.
Carbon Monoxide Poisoning: Early signs of
carbon monoxide poisoning are similar to the
flu with headaches, dizziness and/or nausea. If
you have these signs, obtain fresh air immediately. Turn off the gas supply to the appliance
and have it serviced by a qualified professional,
as it may not be operating correctly.
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 APPLIANCES IN NEGA-
TIVELY PRESSURED ENVIRONMENTS.
WARNING: CHILDREN AND ADULTS
SHOULD BE ALERTED TO THE HAZARDS
OF HIGH SURFACE TEMPERATURES. USE
CAUTION AROUND THE APPLIANCE TO
AVOID BURNS OR CLOTHING IGNITION.
YOUNG CHILDREN SHOULD BE CAREFULLY SUPERVISED WHEN THEY ARE
IN THE SAME ROOM AS THE APPLIANCE.
WARNING: DO NOT PLACE CLOTHING
OR OTHER FLAMMABLE MATERIALS ON
OR NEAR THIS APPLIANCE.
AVERTISSEMENT: SURVEILLER LES
ENFANTS. GARDER LES VÊTEMENTS,
LES MEUBLES, L'ESSENCE OU AUTRES
LIQUIDES À VAPEUR INFLAMMABLES
LOIN DE L'APPAREIL.
WARNING: THIS APPLIANCE MAY ONLY
BE FITTED WITH DOORS CERTIFIED
FOR USE WITH THE APPLIANCE. NO
SUBSTITUTES ALLOWED.
These appliances are equipped with an integral
combustion air door and actuator arm. Combustion air kits are optional and must be installed
before removing the securing screw allowing
the movement of the combustion air actuator
arm (see Step 7).
LOCATION
Figure 1
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. Consideration should be given
to traffic ways, furniture, draperies, etc., due
to elevated surface temperatures. The location
should 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
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.
These appliances may be used for bedroom
installations in the United States and are listed
accordingly. These units may not be installed
in bedrooms in Canada.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
3
LENNOX MERIT® SERIES B-VENT GAS FIREPLACES • 42" LMBV MODELS • INSTALLATION INSTRUCTIONS
Roof Pitch is X/12
12
X
Minimum Height from Roof
to Lowest Discharge Opening
APPLIANCE SPECIFICATIONS
8-3/8"
(213 mm)
22-5/16"
(566 mm)
(1143 mm)
12-1/2"
(318 mm)
41"
(1041 mm)
45"
Front
2"
(51 mm)
13-3/8"
(340 mm)
(1092 mm)
7-3/16"
(186 mm)
Fireplace Top Spacer
43"
CLEARANCES
Minimum clearance to combustibles for the
appliance is as follows: sides and back - 0" (0
mm), oor - 0" (0 mm), adjacent wall - 0" (0 mm),
ceiling - 64" (1625 mm).
Venting
Gas Vent Rule – Gas vent caps are not permit-
ted 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 Table 1 (Figure 3 ), 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).
4
(540 mm)
Left Side
Fireplace
Top Spacer
1"
(25 mm)
Figure 2
21-1/4"
8-3/16"
(208 mm)
9-7/8"
(251 mm)
8-1/8"
(206 mm)
21-1/4"
(540 mm)
Right Side
12-7/8"
(327 mm)
(1092 mm)
3-3/8"
(83 mm)
43"
Junction
Box
Figure 3
Minimum Height
Roof Slope
from Roof to Lowest
Discharge Opening
Feet Meters
Flat to 6/12 1' 0" 0.3
Over 7/12 to 9/12 2' 0" 0.6
38"
(965 mm)
Combustion
Air Inlet
19"
(483 mm)
Gas Line
Access
Over 10/12 to 12/12 4' 0" 1.2
31-9/16"
(802 mm)
5-7/8"
(149 mm)
21-1/4"
(540 mm)
Over 13/12 to 16/12 6' 0" 1.8
Over 17/12 to 21/12 8' 0" 2.4
Note: Venting terminals shall not be recessed
into a wall or siding.
Table 1
12-1/2"
(318 mm)
45"
(1143 mm)
47"
(1194 mm)
Top View
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
replace provided the B-vent cap is at least 2
ft. (0.6m) away from the nearest point of the
chimney opening.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
LENNOX MERIT® SERIES B-VENT GAS FIREPLACES • 42" LMBV MODELS • INSTALLATION INSTRUCTIONS
Header
B
A
Fireplace Framing
C
A
G
Inside Chase
HH
Back Wall of Chase/Enclosure
Including Finising Materials
if any
Rough
Framing Face
(Unfinished Shown)
FRAMING SPECIFICATIONS
Figure 4
Figure 5
Back Wall of Chase/Enclosure
Rough
Framing Face
(Unfinished Shown)
Figure 6
J
Figure 7
Including Finising Materials
C
A
Outside Chase
Back Wall of Chase/Enclosure
Including Finising Materials
D
C
A
E
Corner Installation
if any
if any
Framing Face
(Unfinished Shown)
G
Rough
Framing Dimensions
The fireplace may be positioned and then the
framing built around it, or the framing may be
A 46-1/4" 1175 mm
B 43-1/2" 1105 mm
C 33" 838 mm
D 17-1/2" 445 mm
E 76-1/4" 1937 mm
F 38-1/8" 968 mm
G 21-5/8" 549 mm
H* 8" 203 mm
J 20-5/8" 524 mm
K 53-7/8" 1368 mm
* When FOAK is used.
Note: All framing dimensions calculated for
1/2" dry wall at the appliance face. If sheathing the chase or finishing with other thickness
materials, calculations will need to be made.
constructed and the fireplace positioned into
the opening.
Usually, no special oor 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 oor space
to be occupied by the system, surrounds and
hearth extensions.
3. Note the oor construction, i.e. 2 x 6’s, 2
x 8’s or 2 x 10’s, single or double joists, type
and thickness of oor boards.
4. Use this information and consult your local
building code to determine if you need additional support.
If you plan to raise the fireplace and hearth
extension, build the platform assembly then
position fireplace and hearth extension on
TYPICAL INSTALLATION SEQUENCE
The typical sequence of installation follows,
top. Secure the platform to the oor to prevent
possible shifting.
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.
INSTALLING THE FIREPLACE
Step 1. Frame appliance enclosure as illustrated
in Figures 4 through 7 on page 5.
Note: The nailing flanges, combustible framing
members and screw heads located in areas
4. Install the vent system and exterior termination.
directly adjacent to the nailing flanges, are
EXEMPT from the 1/2" clearance to combustible
5. Field wire and install operating control switch.
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 ame ap-
pearance.
PRE-INSTALLATION NOTES
The fireplace may be installed directly on a
combustible oor or raised on a platform of
F
an appropriate height. Do not place fireplace on
G
carpeting, vinyl or other soft oor coverings. It
may, however, be placed on at wood, plywood,
particle board or other hard surfaces. Be sure
replace rests on a solid continuous oor or
platform with appropriate framing for support
and so that no cold air can enter the room from
under the fireplace.
requirements for the firebox wrapper. Combustible framing may be in direct contact with the
nailing flanges and may be located closer than
1/2" from screw heads and the firebox wrapper
in areas adjacent to the nailing flanges. Frame
the opening to the exact dimensions specified
in the framing details of this manual.
Note: The framed depth, 21-5/8" (549 mm) 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 21-5/8" (549 mm) must be measured from
the drywall surface. It is important that this
dimension be exact.
If the appliance is to be elevated above oor
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.
5
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
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