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NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
LENNOX MERIT
®
SERIES B-VENT GAS FIREPLACES • 42" LMBV MODELS • INSTALLATION INSTRUCTIONS
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 immedi-
ately. Turn off the gas supply to the appliance
and have it serviced by a qualified professional,
as it may not be operating correctly.
These appliances are equipped with an integral
combustion air door and actuator arm. Combus-
tion 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
Typical Locations
Figure 1
In selecting the location, the aesthetic and func-
tional 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.
Test gage connections are provided on the
front of the millivolt gas control valve (iden-
tified 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.
WARNING: FAILURE TO COMPLY WITH
THE INSTALLATION AND OPERATING
INSTRUCTIONS PROVIDED IN THIS
DOCUMENT WILL RESULT IN AN IM-
PROPERLY INSTALLED AND OPERATING
APPLIANCE, VOIDING ITS WARRANTY.
ANY CHANGE TO THIS APPLIANCE AND/
OR ITS OPERATING CONTROLS IS DAN-
GEROUS. IMPROPER INSTALLATION OR
USE OF THIS APPLIANCE CAN CAUSE
SERIOUS INJURY OR DEATH FORM
FIRE, BURNS, EXPLOSION OR CARBON
MONOXIDE POISONING.
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.
WARNING: B-VENT APPLIANCES ARE
NOT DESIGNED TO OPERATE IN NEGA-
TIVELY 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 AP-
PLIANCES. 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 CARE-
FULLY 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.
Do not place clothing or other materials on
or near this appliance.
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 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
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.