Operation
900738-00 04/2017
Innovative Hearth Products
MHD35 Series Direct-Vent Gas Fireplaces
60
MAINTENANCE SCHEDULE
See the tables below for detailed information about required maintenance, both regular and annual.
Table 36 - Maintenance Performed Annually—Before the Burning Season
Maintenance Task
Performed By
Procedure
Inspecting/Cleaning Burner, Logs
and Controls
Qualifi ed Service Technician
Inspect valve and ensure it is properly
operating. Check piping for leaks. Vacuum
the control compartment, fi replace logs and
burner area.
Checking Flame Patterns and Flame
Height
Qualifi ed Service Technician
Verify the fl ame pattern and height displayed
by the fi replace
(
Figure 38, Page 40
)
. Flames
must not impinge on the logs.
Inspecting/Cleaning Pilot and Burner
Qualifi ed Service Technician
Remove any surface build-up on pilot and
burner assembly. Wipe the pilot nozzles,
igniter/fl ame rod and hood. Ensure the pilot
fl ame engulfs the fl ame sensor as shown.
Checking Vent System
Qualifi ed Service Technician
Inspect the vent system at the top and at
the base (within the fi rebox) for signs of
blockage or obstruction. Look for any signs
of dislocation of the vent components.
Fireplace Inspection
Qualifi ed Service Technician
Perform the appropriate fi replace inspection
procedure detailed in this manual.
Replacing Glowing Embers
Homeowner/Qualifi ed Services Technician
Remove the old glowing embers and vacuum
the area. Place new glowing embers
(
Page 54
)
.
Replacing Batteries
Homeowner/Qualifi ed Services Technician
Replace the eight (8) batteries in the battery
holders.
Table 37 - Maintenance Performed Periodically—After the Burning Season
Maintenance Task
Performed By
Procedure
Cleaning Firebox Interior
Homeowner
Carefully remove logs, volcanic stone and
glowing embers. Vacuum out interior of the
fi rebox. Clean fi rebox walls and log grate, if
installed. Replace removed items as detailed
in this manual.
Check Flame Patterns and Flame Height
Homeowner
Verify the fl ame pattern and height displayed
by the fi replace
(
Figure 38, Page 40
)
. Flames
must not impinge on the logs.
Checking Vent System
Homeowner
Inspect the vent system at the top and at
the base (within the fi rebox) for signs of
blockage or obstruction. Look for any signs
of dislocation of the vent components.
Cleaning Glass Door
Homeowner
Clean as necessary following the directions
provided in this manual
(
Page 58
)
. Do not
touch or attempt to clean the glass while hot.