Maintenance Schedule - Lennox MLDVT-30NM Care And Operation Instructions Manual

LENNOX HEARTH PRODUCTS • MERIT

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)
MAINTENANCE TASK
Inspect/Clean Burner, Logs
and Controls
Check Flame Patterns and Flame Height
Inspect/Clean Pilot and Burner
Check Vent System
Appliance Checkout
Replace Glowing Embers
Replace Batteries
Periodically (After the Burning Season)
MAINTENANCE TASK
Clean Firebox Interior
Check Flame Patterns and Flame Height
Check Vent System
Clean Front Glass Enclosure Panel
SERIES DIRECT-VENT GAS FIREPLACES • MODELS MLDVT-30/35/40/45 • CARE AND OPERATION INSTRUCTIONS
®
PERFORMED BY
Qualified Service Technician
Qualified Service Technician
Qualified Service Technician
Qualified Service Technician
Qualified Service Technician
Homeowner / Qualified Service
Technician
Homeowner / Qualified Service
Technician
PERFORMED BY
Homeowner
Homeowner
Homeowner
Homeowner
PROCEDURE
Inspect valve and ensure it is properly operating. Check piping
for leaks. Vacuum the control compartment, fireplace logs and
burner area.
Refer to Figure 11 (MLDVT-35), Figure 12 (MLDVT-40) on Page
15 and verify the flame pattern and height displayed by the
appliance conforms to the picture. Flames must not impinge
on the logs. Ensure flames are steady (not lifting or floating).
Refer to Figure 14 (SIT Millivolt) or Figure 15 (Electronic) on
Page 16. 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.
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.
Perform the appropriate appliance checkout procedure detailed
in this manual.
Remove old ember materials (rockwool) and vacuum the ember
placement area. Place new embers as described and shown in
Figures 9 and 10.
For electronic valve models, replace the batteries in the remote
control and in the battery holder.
PROCEDURE
Carefully remove logs, glowing embers and volcanic stone.
Vacuum out interior of the firebox. Clean firebox walls and log
grate. Replace logs, glowing embers, and volcanic stone as
detailed in this manual.
Refer to Figures 11 (MLDVT-35) and 12 (MLDVT-40) on Page 15
and verify the flame pattern and height displayed by the appliance
conforms to the picture. Flames must not impinge on the logs.
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 as necessary following the directions provided in this
manual. DO NOT TOUCH OR ATTEMPT TO CLEAN GLASS
WHILE HOT.
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