For Safe Operation, Ventilation, Assembly Procedure

2. FOR SAFE OPERATION

A.READ INSTRUCTIONS CAREFULLY: Read and adhere to these instructions. Do not allow anyone who has not read the instructions to assemble, light, adjust or operate the heater.

WARNING

KEEP THE HEATER OUT OF THE REACH OF CHILDREN

B.PROPANE IS VERY FLAMMABLE: In the event of a leak, propane will accumulate and the possibility of a fire is present. Propane gas is scented and its strong odor is readily detectable. Never strike a match or bring any flame or create an electric spark in an enclosure when you smell propane gas. Ventilate the area thoroughly, move the heater outside, find and correct the source of the leak before attempting to light any appliance. If you are unsure of these instructions evacuate immediately and call for help.

C.GAS LEAKAGE: If the leak cannot be corrected, do not tamper with the heater; follow the shut down instructions and return the heater to the dealer or address given on last page.

WARNING

DO NOT USE THIS HEATER ON BULK TANKS OF GREATER CAPACITY THAN 20 POUNDS LPG (50 POUNDS WATER CAPACITY).

D.LEAK DETECTION: Before each use of the heater check all fittings and connections with a soap solution to be sure there are no leaks. Be sure the POL fitting is wrench (7/8”) tightened into the On-Off valve on the propane cylinder. NEVER, NEVER USE ANY FLAME FOR LEAK TEST.

E.CONNECTING HEATER TO PROPANE CYLINDER: Always connect the heater to the bulk cylinder in the outdoors or in a well ventilated area. Use a 7/8” open end wrench. NEVER connect this heater to a cylinder near an open flame.

F.USE OF HEATER: Always operate the heater with the propane cylinder in an upright position on a level noncombustible surface. NEVER place the cylinder on its side when operating the heater.

G.ATTEND HEATER: Do not leave heater unattended while it is in operation.

H.ALWAYS LIGHT HEATER WITH MATCH OR “SPARKLITE” IGNITER: NEVER attempt to light the heater with a spark lighter.

I.DO NOT TAMPER: Should the heater not perform properly, such as little or no heat when operating in the “Hi” position, or for any other reason, DO NOT ATTEMPT TO REPAIR OR TAMPER with the heater. Any tampering could make the use of the heater unsafe and dangerous. Return the heater to the dealer or the address given on last page for repair or replacement.

J.FOR STORAGE: The heater Hi-Med-Lo-Off regulating valve should always be turned to “Off” when the heater is not in use. Allow at least 15 minutes for cooling before handling and storing. Detach propane cylinder from heater before storing. DO NOT store propane cylinders near open flame or heat.

K.DO NOT TRANSPORT OR MOVE APPLIANCE WHILE IN OPERATION OR WHILE HEATER IS ATTACHED. FOLLOW SHUTDOWN AND STORAGE INSTRUCTIONS TO TRANSPORT OR MOVE THIS APPLIANCE.

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 ADEQUATE 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 36 SQUARE INCHES (6” X 6”). 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.MINIMUM 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 3.

B.WARNING: To avoid injury or property damage never allow clothing, tents or other combustible material within 24” of the heater. This heater must be located at least 32” 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.

BTU/HR. RATING		NORMAL	CLEARANCES TO COMBUSTIBLES
MODEL	GAS	OPERATING	FROM C.L. OF
NO.	PROPANE	PROCEDURE	HTR. TO FLOOR	SIDES	REAR	CEILING

MH24T	28,000	Vertical	32”	24"	24"	36”
and
MH24TS

Figure 3

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 1. 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. 1.

Mr. Heater Gas-Fired Infra-Red Portable Heater

Operating Instructions and Owner’s Manual

MH24T, MH24TS specifications

The Enerco MH24TS and MH24T are high-performance forced air propane heaters designed to deliver powerful heating solutions for a variety of spaces. These units are particularly favored in environments requiring rapid and efficient heating, such as construction sites, workshops, and larger garages.

One of the defining features of the MH24TS and MH24T is their impressive heating capacity. With a maximum output of 24,000 BTUs, these heaters are capable of warming up to 600 square feet effectively. This makes them ideal for large, open areas that need a quick temperature boost, ensuring that work can proceed uninterrupted even in cold conditions.

Both models come equipped with a reliable piezo ignition system, making it easy to start the heater without the need for matches or lighters. This feature enhances safety and convenience, especially in professional settings where time is of the essence.

The MH24TS model includes a specialized thermostat that allows users to easily set and maintain their desired temperature. This technology ensures that the space remains consistently warm, reducing the need for constant manual adjustments. In contrast, the MH24T provides a manual control system, offering simplicity and versatility for users who prefer straightforward operation.

Portability is another hallmark of these Enerco models. They are designed with a compact and lightweight structure, and some units feature a carrying handle, making them easy to transport from one location to another. Their robust construction ensures durability, even in rugged work environments.

Safety is paramount in the design of the MH24TS and MH24T. They are equipped with an automatic shut-off function that activates if the unit tips over or overheats. This feature provides peace of mind for users, knowing that the unit will cease operation under potentially hazardous conditions.

Overall, the Enerco MH24TS and MH24T represent a blend of innovative technology, safety, and portability, making them an ideal choice for anyone in need of reliable heating solutions. Their combination of efficiency and powerful performance positions them as standout options in the forced air propane heater market. With these units, users can tackle cold weather and maintain productivity with ease.