4
Propane Portable Heaters Manual
CheCKIng foR leaKs
To check for leaks, make up a 50/50 solution of dish soap and water. Apply this solution to all gas con-
nections. If bubbles appear, there is a leak. If a leak is found, turn off the gas supply, and re-connect the
leaking connection. If the leak persists after several tries, contact Mi-T-M Customer Service at 800-553-
9053.
The installation of this heater must meet all local codes and/or gas utility requirements. In the absence of
local codes, the National Fuel Code ANSI Z223. should be followed.
The minimum clearances to any combustible construction materials must be maintained at all times.
venTIlaTIon
Always provide a fresh air opening in the heated space of at least three square feet (2,800 sq. cm.) for
each 00,000 BTU/Hr of heater output. For example, a MH-050-LM0 will require:
a two-car garage door open 6 inches, or
a single car garage open 9 inches, or
two thirty two inch wide windows open 5 inches.
lIghTIng InsTRUCTIons (MoDels Mh-0050-lM10, Mh-0150-lM10)
. Connect power cord to a properly grounded three (3) prong 20V, 60 Hz, extension cord.
ExTENSION CORD WIRE REqUIREMENTS:
6 to 0 feet (.8 to 3 meters) long, use 8 AWG conductor.
to 00 feet (3.4 to 30.53 meters) long, use 6 AWG conductor.
0 to 200 feet (30.8 to 6 meters) long, use 4 AWG conductor.
2. Connect heater to a proper LP cylinder.
3. Turn gas valve clockwise to OFF position.
4. Wait five (5) minutes for any gas to clear. Smell for gas; if you do not smell gas, go to Step 5.
5. Push in and turn gas control knob counterclockwise to LOW/IGN position. This will light the burner. If
needed, keep pressing control knob until the burner lights.
6. Keep the valve knob depressed for at least 30 seconds after lighting the burner. After 30 seconds, release
valve knob.
7. If burner does not stay lit, repeat lighting procedure.
8. When burner stays lit, turn gas valve knob counterclockwise to desired setting.
lIghTIng InsTRUCTIons (MoDels Mh-0150-lMT0)
The theory of operation for the 50T thermostat is the incoming power is controlled by the thermostat, which
uses a resistance temperature detector (RTD ) to open and close a circuit to shut off the incoming power to
the circuit board. The circuit board controls a solenoid valve to control the gas flow to the nozzle and power
to the fan. [This is possible for this heater because it does not use a thermocouple to rectify flame presence.
Flame presence is rectified through the igniter.
. Follow all safety, installation and ventilation instructions in this manual.
2. Position the heater on a stable and level surface, and be sure that no drafts blow into the inlet or outlet of
the heater.
3. Plug the power cord of the heater into a three hole grounded extension cord. Be sure that the extension
cord is at least 6 feet long, and is UL listed.
Up to 50 feet long, use 8 AWG rated cord.
5 to 00 feet long, use 6 AWG rated cord.
0 to 200 feet long, use 4 AWG rated cord.
OPERATION
