Monessen Hearth 36CDVXTRN User Manual

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36
CDVX Series Direct Vent Gas Fireplace
20012253
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 refit 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.
FK12 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 consist of:
• 
burner 
 gas orifice
• 
pilot assembly 
 thermopile
• 
millivolt gas valve
Most of these components may require only an 
occasional checkup and cleaning and some may 
require adjustment. If repair is necessary, it should 
be performed by a qualified technician.
1.  Turn off pilot light at gas valve.
2.  Allow fireplace to cool if it has been operating.
3.  Remove window frame assembly. (Refer to Window 
Frame Assembly Removal section.)
4.  Vacuum burner compartment especially around 
orifice primary air openings.
5.  Visually inspect pilot. Brush or blow away any dust 
or lint accumulation.
6.  Ignite pilot - Refer to Lighting Instructions.
7.  Reinstall window frame assembly.
To obtain proper operation, it is imperative that the pilot 
and burner’s flame characteristics are steady, not lifting 
or floating.
Typically, the top 3/8” to 1/2” of the thermopile should 
be engulfed in the pilot flame. (Refer to Page 35, Figure 
75)
To adjust pilot burner: (by qualified service technician)
1.  Remove pilot adjustment cap 
2.  Adjust pilot screw to provide properly sized flame.
3.  Replace pilot adjustment cap.
The primary air shutter is set at factory and should 
only be adjusted, if necessary, by a qualified service 
technician.
Maintenance