Mr. Heater MH9BX owner manual Release knob

burner tile. Leave on “HI” position until burner tile turns bright orange.

•After burner tile has turned bright orange, adjust heat output by turning Control Knob to desired position

(“LO” or “HI” setting)

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Figure 4: Release knob.

Screw hose connector into regulator on heater and screw connector on other end of hose into LP-gas supply cylinder valve. Tighten all hose connections.

•	Mr. Heater strongly recommends using disposable fuel
	filter F273699 to trap any oil substances when connect-
	ed to a remote cylinder that can make heater inoper-
	able.
• Open valve at LP-gas supply cylinder.
• Check all hose connections for leaks with soapy water at
	the threaded connection under the domed plastic cover
	where the hose connector screws into the regulator and
	at LP-gas supply cylinder. SEE WARNING!
• Turn Control Knob counterclockwise to “PILOT” position
	and depress to light; see Figure 3. This may take longer
	to purge air from the supply hose depending on the

Warning:

DO NOT OPERATE HEATER UNLESS CONTROL KNOB IS LOCKED IN A POSITION MARKED “HI”, “LO” or “PILOT”.

NEVER SET CONTROL KNOB BETWEEN LOCKED POSI- TIONS. POOR COMBUSTION AND HIGHER LEVELS OF CARBON MONOXIDE MAY RESULT.

•To shut off heater, slightly push down and turn Control Knob clockwise to “OFF” position.

•CAUTION: After turning heater off, wire guard will remain hot. Allow to thoroughly cool before storing.

•Do not operate, store or remove cylinder near flam- mable items or ignition sources.

•LP-GAS CYLINDERS MUST BE DISCONNECTED FROM

HEATER WHEN NOT IN USE!

LIGHTING / OPERATING INSTRUCTIONS FOR USE WITH HOSE CONNECTED TO A REMOTE CYLINDER, MAXIMUM SIZE 20 LBS:

•This Heater may be used in a recreational enclosure or temporary construction work enclosure with a remote refillable propane cylinder ONLY when the cylinder is located outdoors and the Heater is used with Mr. Heater Hose No. F273701, F273702 or F272702 and fuel filter

F273699. Fuel filter must be replaced annually. (NOTE:

Do not operate without the fuel filter as fuel contamina- tion may damage the heater.) Or use green F273704

Buddy series hose. Fuel filter not required.

•DANGER: NEVER bring a refillable propane cylinder indoors. A fire or explosion can occur causing property damage, serious injury or death!

•Inspect the hose before each use of the heater. If there is excessive abrasion or wear, or the hose is cut, replace prior to using the heater with one of the Mr. Heater Hose No’s. shown above.

•The propane cylinder must include a listed overfilling protection device as well as a collar to protect the cylin- der valve.

•Heater must be in an upright position during operation.

•Make sure four-position Control Knob is in “OFF” posi- tion; see Figure 1, at left.

•Swivel regulator outward for easy hose installation.

length of the hose being used.

• If pilot does not light, hold down for approximately 30

seconds; release and depress again. Repeat until pilot

lights.

• After pilot lights, hold down for 30 -60 seconds and

then release knob. Knob should return to fully extended

position; see Figure 4. The pilot should remain lit. To

operate heater slightly depress knob and gently turn to

lock in the “HI” position to light burner tile. Leave on

“HI” position until burner tile turns bright orange.

• After burner tile has turned bright orange, adjust heat

output by turning Control Knob to desired position

(“LO” or “HI” setting).

Caution: Do not try to adjust heating levels by using the propane tank shut off valve.

Warning:

DO NOT OPERATE HEATER UNLESS CONTROL KNOB IS LOCKED IN A POSITION MARKED “HI”, “LO” or “PILOT”.

NEVER SET CONTROL KNOB BETWEEN LOCKED POSI- TIONS. POOR COMBUSTION AND HIGHER LEVELS OF CARBON MONOXIDE MAY RESULT.

•To shut off heater, shut off propane at supply tank, allow heater to use-up propane in supply line un‑ til heater shuts off, then slightly push down and turn Control Knob clockwise to “OFF” position.

•CAUTION: After turning heater off, wire guard will remain hot. Allow to thoroughly cool before storing.

•When not in use, the gas must be turned off at the

LP-gas supply cylinder. As stated before allow heater to use up propane in supply line until heater shuts off.

When the LP-gas supply cylinder is not disconnected from the heater, the heater and the cylinder must be stored outdoors, in a well ventilated space, out of reach of children, and must not be stored in a building, garage or any other enclosed area.

•Indoor storage of the heater is permissible only if the cylinder is disconnected and removed from the heater. Cylinders must be stored outdoors out of the reach of children and must not be stored in a building, garage or any other enclosed area.

Mr. Heater Portable Propane Heater 5 Operating Instructions and Owner’s Manual