11
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
LENNOX HEARTH PRODUCTS • MERIT PLUS
®
B-VENT GAS FIREPLACES (MPB33/35/40/45) • CARE AND OPERATION INSTRUCTIONS
MAINTENANCE
Refer to the maintenance schedule on
Page
23
for maintenance tasks, procedures, and
the frequency and by whom they should be
performed. Always verify proper operation of
the appliance after servicing.
WARNING: Never use abrasive cleaners
on the glass, or clean the glass when it
is hot.
The viewing glass should be cleaned periodi-
cally to remove any build-up caused by the
following:
•
During start-up, it is normal for conden-
sation to form on the inside of the glass
(this condensation and fog will usually
disappear in a few minutes). The moisture
can cause lint, dust and other airborne par-
ticles to cling to the glass surface.
•
During the initial curing of the high tem-
perature paint and burning off of lubricants
used in the manufacturing process, a film
may collect on the glass.
•
A white coating may form on the glass as
a result of impurities and minerals in the
fuel.
Clean the glass two or three times each heat-
ing season, as necessary.
The following cleaning solutions are approved
for use to clean glass:
•
Non-ammonia based household cleaner
•
50/50 mix of white vinegar and water
•
Gas fireplace/stove glass cleaner
Inspect Glass Gasket
Visually inspect the gasket on the back side
of the glass enclosure panels. The gasket sur-
face must be clean, free of irregularities, and
seated firmly.
Clean Control Compartment
Keep the control compartment clean by vacu-
uming or sweeping it out at least twice a year.
More frequent cleaning may be required due
to excessive lint from carpeting, bedding ma-
terial, etcetera. It is imperative that control
compartments, burners and circulating air
passageways of the appliance be kept clean.
Clean Logs And Burner
Carefully remove the logs (use care when han-
dling fiber logs, as they become quite fragile
after curing). Vacuum out any foreign matter
(lint, carbon, etc.) on the burner. Ensure the
burner ports are “open”. Remove any carbon
deposits from the under side of the logs using
a vacuum cleaner, or a soft bristled brush (i.e.
paint brush).
NOTE: Improper positioning of the logs can
create carbon build-up and will alter the per-
formance of the appliance.
Replacing Logs
If the logs become damaged by accident or
improper handling and need replacement, use
only the proper replacement logs from manu-
facturer (see
Page 30
for ordering informa-
tion).
Re-Install Embers and Logs
Carefully follow placement instructions on
Page 13
. All logs should fit onto the corre-
sponding pins and/or log stoppers. This will
ensure a proper flame and safe combustion.
Inspect Wiring
Refer to
"Wiring" on Page 19
.
CAUTION: Label all wires prior to discon-
nection when servicing controls. Wiring
errors can cause improper and dangerous
operation. Verify proper operation after
servicing.
ATTENTION: Au moment de l'entretien
des commandes, étiquetez tous les fils
avant de les débrancher. Des erreurs
de cáblage peuvent entraîner un fonc-
tionnement inadéquat et dangereux.
Inspect and clean all wire connections. Ensure
that there is no melting or damage. Inspection
should include:
•
Terminals at the valve
•
ON/OFF Switch (optional unit mounted
switch) or standard CPI switch (electronic
models only)
•
Remote control or remote wall switch kit
(optional control switch)
Inspect Burner Flame and Pilot Flame Ap-
pearance
Periodically do a visual check of the burner
flame and the pilot flame. Ensure that the
burner flame appearance resembles the flame
shown in
Figures 12, 13 and 14
and as de-
scribed in Flame Appearance and Sooting
on
Page 17
. Refer to
Figures 16 and 17
on
Page 18
for more information about the pilot
flame appearance. Contact a qualified service
technician at once if any abnormal condition
is observed.
Small Area Paint Touch-Up
Use only a factory supplied paint kit for touch-
ups. Paint is available from Lennox Hearth
Products dealers. Never attempt to paint a hot
fireplace.
Do not attempt to repaint the appliance until
the finish is completely cured (see Burn-In Pe-
riod on
Page 7
)
. If the surface later becomes
stained or marred, it can be lightly sanded and
touched up with spray paint.
WARNING
Turn off gas and electrical power
to the fireplace and allow it to
cool before cleaning or servicing
the appliance.
CAUTION: Wear gloves and safety
glasses for protection while doing
required maintenance.
Verify proper operation after servicing.
S'assurer que l'appareil fonctionne adé-
quatement une fois l'entretien terminé.
Always turn off gas to the pilot (millivolt
appliances) before cleaning. Before re-
lighting, refer to the lighting instructions in
this manual
(
Page 24
)
. Instructions are also
found on a pull-out panel located in the con-
trol compartment.
Always keep the appliance area clear and free
from combustible materials, gasoline and
other flammable liquids.
Inspect Venting System
The appliance and venting system should be
thoroughly inspected before initial use and,
at a minimum, annually by a qualified service
technician. Inspection should include ensur-
ing the exhaust passage is unobstructed and
vent components are properly assembled and
not damaged. Contact a qualified service tech-
nician at once if any abnormal conditions are
observed.
If the venting system is disassembled for any
reason, a qualified service technician should
follow vent installation instructions for proper
reassembly and proper sealing of the venting
system components. However, more frequent
periodic inspections and cleanings should be
performed by the homeowner.
Cleaning Glass
See
"Front Glass Enclosure Panel, Removal,
and Installation" on Page 12
.
NOTE: Do not clean the viewing glass before
completing the burn-In period (the first two
weeks of operation). Clean the glass only
when necessary and when the fireplace is
cool. Wipe the surface with a clean, damp,
soft cloth. Follow with a dry, soft towel. Take
care not to scratch the glass surface.
