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34
30484 Rev Q
09/04
MAXUS DIRECT VENT HEATER
M. MAINTENANCE INSTRUCTIONS
1. Clean the Burner and Control Compartment
Keep the burner and control compartment clean by
brushing and vacuuming at least once a year. Always
turn off the wall switch (or remote control) and gas valve
before cleaning.
2. Check the Venting System
The appliance and venting system should be inspected
before use and at least annually by a qualified field service
person, to ensure that the flow of combustion and
ventilation air is not obstructed.
3. Check the Flame Patterns
Check the flame pattern of the burner periodically, making
sure the flames are steady, not lifting or floating. The
flame color should be blue with yellow tips. See
Figure 48.
The thermopile and thermocouple (standing pilot) tips
should be covered with flame. See Figure 49. If the
appliance has an electronic ignition, the ignitor rod
should be covered with the burner flame. See Figures
50 and 51.
If the vent configuration is installed incorrectly, the vent
may cause the flames inside the appliance to lift or
“ghost” - a dangerous situation. Inspect the flames after
installation to ensure proper performance. See
Figure 48. If the vent configuration is correct, yet the
flames are lifting or ghosting, shut off gas to the appliance
and contact the dealer.
To prevent the possibility of soot buildup, we have
provided your appliance with an adjustable air shutter.
Your air shutter is provided in the “CLOSED” position
for natural gas and in the “OPEN” position for propane.
It takes 16 full turns (360 deg) to move the air shutter
from fully open to fully closed. In the event soot is
accumulating in your appliance, the air shutter should
be opened farther. This can be done by opening the
control access panel, finding the air shutter handle
located on the bottom of the firebox. When the air
shutter handle is turned all of the way DOWN
(clockwise), the air shutter is fully closed. When the
air shutter handle is turned all of the way UP
(counterclockwise), the air shutter is fully open. See
Figure 52.
Note:
The look of the flames and embers may differ
based on the type of fuel and venting assembly that is
used.
Figure 48
Flame Patterns
Figure 49
Standing Pilot
Figure 50
Figure 51
Figure 52
Air Shutter Fixed Wing Bolt Location
Note:
If the air shutter is open all the way and the flames
remain sooty, shut off gas to the appliance and contact a
qualified gas service technician.
Flame covers top 1/2 in. of
thermopile and thermocouple.
Air Shutter
Handle