24
LENNOX HEARTH PRODUCTS • MERIT
®
SERIES DIRECT-VENT CONTEMPORARY DESIGN GAS FIREPLACES • MODEL MLDVTCD-35 • CARE AND OPERATION
MAINTENANCE TASK
PERFORMED BY
PROCEDURE
Inspect/Clean Burner, Contemporary
Media and Controls
Qualified Service Technician
Inspect valve and ensure it is properly operating. Check pip
-
ing for leaks. Vacuum the control compartment, fireplace and
burner area.
Check Flame Patterns and Flame Height
Qualified Service Technician
Refer to
Figure 7
on
Page 14
and verify the flame pattern and
height displayed by the appliance conforms to the picture.
Flames must not impinge on the contemporary media. Ensure
flames are steady (not lifting or floating).
Inspect/Clean Pilot and Burner
Qualified Service Technician
Refer to
Figure 9 (
SIT Millivolt
)
or
Figure 10 (
Electronic
)
on
Page
15
. Remove any surface build-up on pilot and burner assembly.
Wipe the pilot nozzles, igniter/flame rod and hood. Ensure the
pilot flame engulfs the flame sensor as shown.
Check Vent System
Qualified Service Technician
Inspect the vent system at the top and at the base (within the
firebox) for signs of blockage or obstruction. Look for any signs
of dislocation or deterioration of the vent components (recon-
nect or replace as necessary).
NOTE
: Excessive condensation
can cause corrosion of caps, pipe and fittings (excessive con-
densation can be caused by long lateral runs, too many elbows
and/or exterior portions of the system being exposed to cold
weather). Also inspect wall straps or plumbers's tape to ensure
it is secure and in place.
Appliance Checkout
Qualified Service Technician
Perform the appropriate appliance checkout procedure detailed
in this manual.
Replace Batteries
Homeowner / Qualified Service
Technician
For electronic valve models, replace the batteries in the remote
control and in the battery holder.
Periodically
(After the Burning Season)
MAINTENANCE TASK
PERFORMED BY
PROCEDURE
Clean Firebox Interior
Homeowner
Carefully remove contemporary media. Vacuum out interior of
the firebox. Clean firebox walls. Replace contemporary media
as detailed in this manual.
Check Flame Patterns and Flame Height
Homeowner
Refer to
Figure 7
on
Page 14
and verify the flame pattern and
height displayed by the appliance conforms to the picture. Flames
must not impinge on the contemporary media.
Check Vent System
Homeowner
Inspect the vent system at the top and at the base (within the
firebox) for signs of blockage or obstruction. Look for any signs
of dislocation of the vent components (reconnect or replace as
necessary).
Clean Front Glass Enclosure Panel
Homeowner
Clean as necessary following the directions provided in this
manual.
DO NOT TOUCH OR ATTEMPT TO CLEAN GLASS
WHILE HOT
.
MAINTENANCE SCHEDULE
Turn off gas and electrical power to the fireplace and allow it to cool before cleaning or servicing the appliance.
Annually
(Before the onset of the Burning Season)
