10
Mr. Heater | Unvented Natural Gas Fired Room Heater
Operating Instructions and Owner’s Manual
NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
If pilot does not stay lit, refer to
Troubleshooting, pages 11-13. Also,
contact a qualified service person or
gas supplier for repairs.
If pilot does not stay lit, refer to
Troubleshooting, pages 11-13. Also,
contact a qualified service person or
gas supplier for repairs.
If control knob does not pop up when
released, contact a qualified service
person or gas supplier for repairs.
8. Turn control knob to “HI” to light
heater. Leave on “HI” position until
the tiles have turned bright orange.
9. After the burner tiles have turned
bright orange, adjust heat output
by turning Control Knob to desired
position (“LO” or “HI”).
IMPORTANT:
Release downward
pressure while turning control knob.
Control knob must be locked at the
desired position.
To Turn Off Gas To Appliance
SHUTTING OFF HEATER:
1. Turn off equipment shutoff valve.
2. Turn control knob clockwise
to
the OFF position.
SHUTTING OFF BURNER ONLY
(PILOT STAYS LIT)
1. Turn control knob clockwise
to
the PILOT position.
INSPECTING BURNER
Check pilot flame pattern and burner
flame pattern often.
PILOT FLAME PATTERN
Figure 16 show a correct pilot flame
pattern and also shows an incorrect
pilot flame pattern. The incorrect
pilot flame pattern is not touching
thermocouple. This will cause the
thermocouple to cool. When the
thermocouple cools, the heater will
shut down. If pilot flame pattern is
incorrect, as shown in Figure 16:
• Turn heater off (refer back to
To Turn
OFF Gas to Appliance
)
• See
Troubleshooting
, pages 11-13.
CLEANING AND MAINTENANCE
For maintenance of the inside cabinet
or to access the burner and pilot
assembly for cleaning or service.
Remove the four screws(two located
on each side) that secure the front shell
to the unit. Refer to Figure 6. Gently
lift up on the front shell to disengage
the hooks and pull forward to remove
Figure 16
Correct Pilot Position
Incorrect Pilot Position
WARNING:
Failure to keep the
primary air opening(s) of the burner(s)
clean may result in sooting and property
damage.
WARNING:
Turn off heater and let
cool before servicing.
CAUTION:
You must keep control
areas, burner and circulation air
passageways of heater clean. Inspect
these areas of heater before use. Have
the heater inspected yearly by a qualified
service person. Heater may need more
frequent cleaning due to excess lent
from carpeting, bedding material, pet
hair, etc.
it. You will now be able to access all
of the internal components of the
appliance.
Make sure grille guard is in place
before running heater. If screen or
grille guard is removed for servicing it
must be replaced prior to operating the
heater.
CLEANING ODS/PILOT AND BURNER
• Use as vacuum cleaner, pressurized air
or small soft bristled brush to clean.
CLEANING BURNER PILOT AIR HOLE
INLET
We recommend that you clean the unit
every 2,500 hours of operation or every
three months. We also recommend
that you keep the burner tube and
pilot assembly clean and free of dust
and dirt. To clean these parts we
recommend using compressed air no
greater than 30 psig.
This can be done by using a vacuum
cleaner in the blow position or
using compressed air in a can. If
using canned air please follow the
directions on the can. If you don’t
follow directions on the can you could
damage the burner or pilot assembly.
In addition, the directions below should
also be followed.
1. Shut off the unit, including the pilot.
Allow the unit to cool for at least thirty
minutes.
2. Inspect burner and pilot for dust and
dirt.
3. Blow air through the port/slots and
holes in the burner.
A yellow tip on the pilot flame indicates
dust and dirt in the pilot assembly.
To clean the pilot assembly find the
small pilot air inlet hole about two
inches from where the pilot flame
comes out of the pilot assembly. See
Figure 17. With the unit off, lightly
blow air through the air inlet hole. You
may blow through a drinking straw if
compressed air is not available.
CLEANING HEATER CABINET
Air passageways
• Use a vacuum cleaner or pressurized
air to clean
Exterior
• Use a soft cloth dampened with a
mild soap and water mixture. Wipe
the cabinet to remove dust.
Figure 17
Pilot Assembly
Pilot Air Inlet Hole
MAINTEN
ANCE
WARNING:
When running heater,
set control knob at “LO” or “HI” locked
positions. Poor combustion and higher
levels of carbon monoxide may result
if heater is operated with control knob
positioned between locked positions.
