5
Operating Instructions and Owner’s Manual
Mr. Heater | Gas-Fired Infra-Red Portable Heater
3. VENTILATION
A.
WARNING:
This heater is an unvented appliance and
MUST be used ONLY in a well ventilated area. NEVER
attempt to operate the heater inside any vehicle, camper or
enclosure.
B.
Any combustion process requires and consumes oxygen, and
will produce carbon monoxide.
THIS HEATER MUST BE USED
WITH ADEQUTATE VENTILATION.
Do not use in a tightly
enclosed area. Two openings directly to the outdoors MUST be
provided. One HIGH and one LOW. Preferably on opposite sides
of the enclosure.
EACH OPENING SHALL HAVE A MINIMUM
FREE AREA OF 24 SQUARE INCHES (6” X 4”).
Structures of
tight construction or tents using fire retardant materials will
require larger openings. If any additional fuel burning
appliances are operated,
ALWAYS PROVIDE ADDITIONAL
VENTILATION
. Increase the area of each opening by at least 2
square inches for each 1,000 BTU’s per hour of additional input
rating.
C.
WARNING:
Provide ample ventilation. This heater consumes air
(oxygen). Do not use this heater in unventilated structures to
avoid endangering your life. Provide additional ventilation for
any additional fuel-burning appliances and additional
occupants.
4. MIMIMUM CLEARANCE FROM
COMBUSTIBLE MATERIALS
A.
When operating, the heater surfaces are extremely hot. Keep
sleeping bags, clothing, and all combustible materials clear of
the heater by at least the distances shown in figure 4.
B.
WARNING:
To avoid injury or property damage never allow
clothing, tents or other combustible materials within 30” of the
heater. This heater must be located at least 24” above the floor
level when in use. Never operate the heater when sleeping.
C.
WARNING:
Never direct the heat output of this heater toward
any propane tank within 20 feet.
CLEARANCES TO COMBUSTIBLES
Figure 4
MH12T
14,000 Vertical
24”
30" 30" 30”
and
MH12TS
MODEL
NO.
GAS
PROPANE
BTU/HR. RATING NORMAL
OPERATING
PROCEDURE
FROM C.L. OF
HTR. TO FLOOR SIDES REAR CEILING
5. ASSEMBLY PROCEDURE
A.
Make sure the regulator knob on the heater is “off” by turning
knob clockwise to the “OFF” position.
B.
Carefully screw POL nut directly into bulk 20 lb. propane
cylinder, counterclockwise. REMEMBER – This is a left hand
thread – see Figure 2. Make sure the heater is in a vertical
upright position and directed away from the collar of the bulk
tank. Use a 7/8” open end wrench to tighten the POL fitting –
left hand thread – see Fig. 2.
