CFM UVC43 - Manual (Page 14)

14
Majestic Fireplaces
®
UVC / UVS Vent-Free Heaters
20000135
Maintenance
Burner and Burner Compartment
It is important to keep the burner and the burner
compartment clean. At least once per year the logs and
lava rock/ember material should be removed and the
burner compartment vacuumed and wiped out. Remove
and replace the logs as per the instructions in this
manual.
Always handle the logs with care as they are fragile
and may also be hot if the fireplace has been in
use.
FK24 Fan Assembly
The fan unit requires periodic cleaning. At least once
per month in the operating season, open the lower
louvre panels and wipe or vacuum the area around the
fan to remove any build up of dust or lint.
Cleaning the Standing Pilot
Control System
The burner and control system consists of:
• main burner • pilot burner
• gas orifice • thermopile
• combination millivolt gas valve
Most of these components may require only an occa-
sional checkup and cleaning and some may require ad-
justment. If repair is necessary, it should be performed
by a qualified technician.
In order to properly clean the burner and pilot assembly,
turn off the gas to the unit, remove the window frame
panel and logs exposing the burner and pilot assembly.
Clean all foreign materials from the top of the burner.
Check to make sure that burner parts are clean. Visu-
ally inspect pilot. Brush or blow away any dust or lint
accumulation If pilot orifice is plugged, disassembly
may be required to remove any foreign material from
the orifice or tubing.
To obtain proper operation, it is imperative that the pilot
and burner's flame characteristics are steady, not lifting
or floating.
Typically, the top 1/8" of the thermopile should be en-
gulfed in the pilot flame. (Fig. 19)
Fig. 19 Proper pilot flame height.
FP449
IF449
NOVA SIT PILOT
UVC
2/14/97
Pilot Assembly
Cleaning Catalytic Filters
(UVC Only)
The catalytic filters require cleaning at least once a year
to work effectively.
To clean catalytic filters:
1. From inside the combustion area, remove the 4 hex
nuts holding the filter; lower filter down and out.
2. Clean the outer surface of the filter with the brush
attachment of your vacuum sweeper to remove loose
dirt.
3. Submerge the filter in a mild soapy water solution,
then rinse thoroughly with distilled or deionized
water.
4. Replace in heater when dry.
5. Repeat with second filter.