General Information - Mr. Heater MH18B Operating Instructions And Owner's Manual

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REGULATOR(S) IN HEATER MUST ALWAYS BE IN PLACE
DURING OPERATION.
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Any safety screen or guard removed for servicing the ap-
pliance must be replaced prior to operating the heater.
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The appliance should be inspected before each use.
Frequent cleaning may be required. The control com-
partments, burner(s) and circulating air passageways of
the appliance must be kept clean, see MAINTENANCE.
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DO NOT use this heater if any part has been under water.
Immediately call a qualified service technician to inspect
the heater and to replace any part of the control system
and any gas control, which has been under water.
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When used without adequate combustion and ventila-
tion air, this heater may give off excessive CARBON
MONOXIDE, an odorless, poisonous gas.
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Some people - pregnant women, persons with heart
or lung disease, anemia, those under the influence of
alcohol, those at high altitudes - are more affected by
carbon monoxide than others.
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When heater is placed on the ground, make sure the
ground is level and keep any objects at least 24 inches
from the front of the heater. THIS HEATER IS EQUIPPED
WITH A TIP OVER SWITCH THAT WILL SHUT THE
HEATER OFF IF THE HEATER TIPS OVER HOWEVER, DO
NOT LEAVE HEATER UNATTENDED OR WHERE CHIL-
DREN MAY CAUSE THE HEATER TO TIP OVER. NEVER
OPERATE THE HEATER WHILE SLEEPING!

GENERAL INFORMATION:

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This heater is safe for indoor use in small recreational
enclosures, having means for providing combustion air
and ventilation, such as enclosed porches, cabins, fishing
huts, trailers, tent trailers, tents, truck caps and vans.
It may be used for emergency indoor heating when
connected to a disposable 1 lb. propane cylinder and
for indoor use in commercial enclosures, having means
for providing combustion air and ventilation, such as
construction trailers or temporary work enclosures.
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When the heater is cold or at room temperature, it will
take a few minutes for the burner(s) tile to turn bright
orange. This is normal and the heater is working prop-
erly. If burner(s) tile is visibly flaming, turn heater off
and call a qualified service technician.
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• NOTE: THIS HEATER MAY BE OPERATED WITH (1) OR
LIGHTING / OPERATING INSTRUCTIONS
FOR USE WITH DISPOSABLE 1 LB.
PROPANE CYLINDERS:
WARNING: Always inspect propane cylinder and heater propane
connections for damage, dirt, and debris before attaching
propane cylinder. Do not use if head of cylinder is damaged,
punctured or deteriorated.
ALWAYS ATTACH OR DETACH CYLINDER OUTDOORS AWAY
FROM FLAMES, OTHER IGNITION SOURCES, AND ONLY WHEN
HEATER IS COOL TO TOUCH. NEVER SMOKE WHEN ATTACHING
OR REMOVING PROPANE CYLINDER OR MAKING REMOTE
CONNECTIONS!
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Mr. Heater | Big Buddy Operating Instructions and Owner's Manual
When the unit is lit, there should be about a quarter
inch border around the tile that will not turn bright
orange. This is normal.
When operating the heater at altitudes over 7,000 FT.
above sea level, the unit may not burn as bright as in
lower altitudes. This is normal. At higher altitudes, the
heater may shut-off. If this happens, provide fresh air,
wait 5 minutes and re-light. Due to local atmospheric
conditions heater may not re-light.
Operating time will vary depending on the heater set-
ting and the supply cylinder size. (One 1 lb. cylinder: 1.5
to 6 hours. Two 1 lb. cylinders: 3 to 12 hours. Two 20
lb. cylinders: 50 to 220 hours.) Heater may be operated
from quick disconnect, one or both regulated inlets.
Due to the properties of LP gas, run times can be signifi-
cantly reduced when operating continuously at temper-
atures below 20ºF. Use of a 20 lb. tank is recommended
in these conditions.
When moving heater when lit or bumping heater set-
ting it down, tip over switch may shut off heater. If this
happens, re-light.
(2) DISPOSABLE 1 LB. PROPANE CYLINDERS OR WITH
A REMOTE REFILLABLE CYLINDER(S) MAX. 20 LBS
USING (1) OR (2) F273701, F273702 OR F272702 HOSE
ASSEMBLIES WITH FUEL FILTERS (F273699) ON EACH
HOSE ASSEMBLY. IT MAY ALSO BE OPERATED WITH (1)
F271802 HOSE ASSEMBLY CONNECTED TO A REGULATED
(11" W.C.) PROPANE SOURCE OR (1) F271803 HOSE
ASSEMBLY WITH 11" REGULATOR WITH ACME NUT.
Use only LP-gas cylinders marked in accordance with the
U.S. Dept. of Transportation (DOT).
Use only 16.4 oz. (1 lb.) disposable cylinders that mate
with No. 600 valve connection.
Heater and attached cylinder(s) must be in an upright
position during operation.
Make sure five-position Control Knob is in "OFF" posi-
tion; see Figure 1.
Screw 1 lb. disposable LP-gas supply cylinder(s) clockwise
(from bottom) into portable heater until hand-tight.
DO NOT use thread sealant on this connection.
Check cylinder(s) connection for leaks with soapy water
at the threaded connection under the domed plastic
cover where the cylinder screws into the regulator. SEE
WARNING! ON PLASTIC COVER DOORS.