BEFORE YOU BEGIN

Read this manual carefully before installing or servicing this equipment. Improper installation, servicing or maintenance will cause death, injury or property damage. Check the minimum required safe distances from combustibles given on the outside of each burner to make sure that the product is suitable for your application. The minimum required safe distances from combustibles is also found on page 9 of this manual. Installer must be a licensed contractor of representative. After the installation is complete, check product operation as provided in these instructions.

Unpacking the Heater

Manpower Requirements

To prevent personal injury and damage to the heater, two persons will be required to remove the heater from the carton. Both ends of the heater should be lifted from the carton at the same time. The burner box should be lifted by gripping the bottom of the box. The reflector end of the heater should be lifted using the rear moveable hanger.

Safety

Thin sheet metal parts, such as the reflector portion of the heater and the various venting components, have sharp edges. To prevent injury, the use of work gloves is recommended. The use of gloves will also prevent the transfer of body oils from the hands to the surface of the reflector.

Section 1 Introduction

About The Heater

The MHT 45 is a factory-assembled, gas fired, low-intensity heating system. The system has been designed for easy installation and will provide years of economical operation and trouble-free service. Not only is infrared heat efficient, it also provides the most comfortable conditions in open areas, such as garages.

Gas-Firedmeans it uses clean-burning Natural or LP gas.

Low-Intensitymeans that the radiant surface of the heat exchanger tube does not glow red. Instead, it operates at a lower temperature (less than 1000 F) and radiates energy at a lower intensity per square foot of radiating surface. The lower temperature and intensity levels are within a range that is most effective in establishing and maintaining personal comfort levels. An aluminum reflector directs the radiant energy downward to the occupied area.

Radiant refers to the energy radiated by the tube heater. Because the energy is in the form of infrared rays, it does not directly heat the air. Instead, the rays heat objects such as the floor, cars, machines and people. The warm objects, in turn, heat the air. These combined features are the key to the exceptional comfort and fuel efficiency provided by the tube heater.

Available Accessories

Vent Kit (F102840)

1.(2) 3" x 2' Pipe 26GA.

2.(1) 36" x 3" B-Vent

3.(1) Gas Vent Top 3"

4.(1) Adj. Wall Thimble

5.(1) Storm Collar

6.(1) 3" Elbow

7.(1) Adj. Roof Flashing

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4

5

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Mr. Heater Gas-Fired Low-Intensity Infrared Heater

3

Operating Instructions and Owner’s Manual

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Mr. Heater MHT 45 owner manual Before YOU Begin, Unpacking the Heater, Introduction, Available Accessories
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MHT 45 specifications

The Mr. Heater MHT 45 is a versatile and powerful heating solution designed for both residential and commercial spaces. This portable propane heater stands out in the market due to its efficient heating capabilities and user-friendly features, making it ideal for workshops, garages, and outdoor activities.

One of the standout features of the MHT 45 is its robust heating output. It can deliver an impressive 45,000 BTUs, ensuring that even larger spaces are heated quickly and effectively. This high output is particularly beneficial during colder months, where rapid warmth is essential for comfort and productivity. The heater offers a heating range of up to 1,000 square feet, making it suitable for various applications, whether in the home or on the job site.

The MHT 45 utilizes advanced radiant heating technology, providing even warmth without requiring a fan. This technology allows for silent operation, making it an excellent option for noise-sensitive environments. Additionally, the radiant heat minimizes air movement and helps maintain humidity levels, creating a comfortable atmosphere while reducing dust and allergens in the air.

Another noteworthy characteristic is its portability. The MHT 45 comes equipped with a sturdy handle, allowing for easy transport between locations. This makes it a favorite among tradespeople who need efficient heat in different work areas or outdoor enthusiasts who want comfort while camping or tailgating.

Safety features are abundant in the Mr. Heater MHT 45. It includes an automatic shut-off system, which activates if the heater tips over, ensuring user safety. The built-in oxygen depletion sensor automatically turns the heater off if it detects low oxygen levels in the surrounding environment, providing peace of mind while operating.

The heater runs on a 20-pound propane tank, providing a substantial amount of heating time before needing a refill. This efficiency means users can rely on the MHT 45 for extended periods without frequent interruptions.

In summary, the Mr. Heater MHT 45 is a powerful propane heater packed with features that cater to both indoor and outdoor heating needs. With its high BTU output, silent operation, portability, and extensive safety measures, it represents a reliable choice for anyone looking to stay warm in various settings. Whether for personal use or demanding job sites, the MHT 45 is engineered to deliver comfort and convenience.
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