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NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
13. Inspect interior of casing of the heater
for accumulation of dust, lint, spider
webs, or other foreign debris that
may cause a fire. If necessary, clean
interior of casing assembly with a
vacuum cleaner or apply air pressure.
Do not damage any components
within casing assembly when you are
cleaning.
14. Repeat steps 5-10 in reverse order.
Make sure to securely tighten gas
connections. Upon lighting the heater,
check for leaks by spraying with a mild
soap/water solution. Reattach panels
removed in Step 4.
ODS (Oxygen Depletion
Sensor) and Valve
Components
It may also be necessary to replace the
ODS and valve components. In order
to do this, the control bracket assembly
must be removed. To do this complete
the above steps 1-10 to remove the
main burner assembly and then refer to
the following steps:
1. Remove (2) screws connecting the
control bracket to the main body of
the heater. See Figure 10.
2. Remove the valve knob by pulling it
away from the heater.
3. Use a 9/16" (or 14 mm) wrench
to remove the compression nut
connecting the inlet gas tube to the
enclosure. See Figure 1 1.
4. Lift up on the control bracket assembly
to remove it from the heater. See
Figure 12.
5. Complete the following steps where
necessary to replace the various
components on the control bracket
sub-assembly (Refer to Figure 13):
• To remove the pilot gas tube, unscrew
the compression nuts with a 7/16" (or
12 mm) wrench.
• To remove the burner gas tube or the
inlet gas tube, use a 9/16" (or 14 mm)
wrench.
• To remove the Valve, ODS, or Tip
Switch, remove the screws connecting
them to the control bracket. Remove
thermocouple and ignition wires
where necessary.
6. Replace components as needed and
reassemble. Be sure to check gas
connections with a mild soap water
solution upon lighting.
7. Repeat Steps 1-4 in reverse order to
install the control bracket assembly.
CAUTION: Do not attempt to
service or clean heater while it is hot.
Failure to follow this instruction can
result in painful burns.
WARNING: Any change to this
heater or its controls or attempts
to clean the catalytic pad can be
dangerous.
WARNING: Never use needles,
wires or similar cylindrical objects to
clean the pilot to avoid damaging the
calibrated orifice that controls the gas
flow.
Valve Knob
Figure 10
Inlet Gas Tube
Pilot Gas
Tube
9
Mr. Heater | Catalytic Heater
Burner Gas Tube
ODS
Figure 13
Operating Instructions and Owner's Manual
Compression Nut
Figure 11
Figure 12
Valve
Tip Switch
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