WARNING:

Every time hose or tank is connected to unit, connec- tion must be checked for leaks in one or more ways: Apply soapy water to connection, look for bubbles, listen for hiss of escaping gas, feel for extreme cold, smell for rotten egg odor. Do not use if leaking!

WARNING:

Any changes to this heater or its controls can be dangerous.

WARNING:

Early signs of carbon monoxide poisoning resemble the flu, with headache, dizziness and/or nausea. If you have these signs, heater may not be working properly. Get fresh air at once! Have heater serviced.

WARNING:

If the recreational or commercial enclosure does not have a window or roof vent, DO NOT USE THIS HEATER INSIDE.

THE STATE OF CALIFORNIA REQUIRES THE FOLLOWING WARNING:

WARNING:

Combustion by-products produced when using this product contain carbon monoxide, a chemical known to the State of California to cause cancer and birth defects (or other reproductive harm).

CONTENTS

General Safety Instructions

3

General Information

4

Operating with Disposable Propane Cylinders

5

Operating With Hose Connected to Remote Cylinder

6

Maintenance

7

Troubleshooting

7

Parts List

8

Parts Ordering Information

10

Service Information

10

SPECIFICATIONS

MODEL NO

MH18B

GAS TYPE

P R O P A N E

INPUT BTU/HR

4,000 / 9,000 /18,000

CLEARANCE TO

COMBUSTIBLES

T O P

30”

F R O N T

24”

S I D E S

6”

R E A R

0”

Caution: Some carpets or linoleum surfaces may discolor if heater is placed directly on these floor coverings.

GENERAL SAFETY INSTRUCTIONS

THIS IS A HEATING APPLIANCE. DO NOT OPERATE THIS APPLIANCE WITHOUT THE FRONT WIRE GUARD INSTALLED

Due to high temperatures, the appliance should be located out of traffic and away from combustible materials.

Children and adults should be alerted to the hazard of high surface temperatures and should stay away to avoid burns or clothing ignition.

Young children should be carefully supervised when they are near the appliance.

Do not place clothing or other flammable material on or near the appliance.

Do not operate heater in any moving vehicle.

This heater can only be used in a recreational or commercial enclosure with a window or roof vent. It may also be used outdoors.

This heater requires a vent area of 18 square inches

(example 4 1/4” x 4 1/4” opening) minimum for ad- equate ventilation during operation. Do not use other fuel burning appliances inside.

GAS PRESSURE AT HEATER IS REGULATED AND FIXED AT 11” W.C. WHEN USING A REMOTE HOSE CONNECTION TO HEATER TANK SWIVEL(S), DO NOT REGULATE OR REDUCE PROPANE TANK SUPPLY PRESSURE TO HEATER.

WARNING: ANY HOSE CONNECTION TO A QUICK DISCONNECT FITTING ON HEATER MUST BE REGULATED TO 11” W.C. PRESSURE

REGULATOR IN HEATER MUST ALWAYS BE IN PLACE DURING OPERATION.

Mr. Heater Big Buddy/Tough Buddy

3

Operating Instructions and Owner’s Manual

05/06

78438CAL Rev. L1

Page 3
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Enerco MH18B operating instructions Contents, Specifications, General Safety Instructions

MH18B specifications

The Enerco MH18B is a versatile and robust portable heater designed to provide efficient heating solutions for both indoor and outdoor environments. Known for its reliability and performance, the MH18B is ideal for a range of applications including construction sites, garages, workshops, and outdoor events.

One of the standout features of the Enerco MH18B is its high heating capacity, generating up to 18,000 BTUs, which can effectively heat spaces up to 450 square feet. This makes it suitable for sizable areas where warmth is needed quickly and effectively. The heater utilizes a forced air design, which ensures rapid heat distribution, making it a popular choice for those who need to heat up spaces in a short amount of time.

In terms of fuel efficiency, the MH18B operates using propane, which is known for its clean-burning properties. The unit has an impressive runtime, allowing for extended use without frequent refueling. This makes it not only efficient but also cost-effective, allowing users to maximize their heating time without incurring high fuel costs.

Safety features are another critical aspect of the Enerco MH18B. The device comes equipped with a built-in tip-over switch and an automatic shut-off system to prevent any potential hazards. These safety features ensure that the heater operates securely, making it suitable for a variety of settings, including those where individuals may be present for long hours.

The MH18B is designed for user convenience, featuring easy-to-use controls and a lightweight structure that allows for portability. It includes a sturdy handle for easy transport, enabling users to move it from one location to another with minimal effort.

Durability is a hallmark of the MH18B, built with high-quality materials that withstand the rigors of everyday use, whether on a job site or at home. Its compact design allows for easy storage when not in use.

In conclusion, the Enerco MH18B is a powerful, efficient, and safe heating solution ideal for a variety of environments. With its impressive output, fuel efficiency, safety features, and portability, it stands out as a preferred choice for both professional contractors and DIY enthusiasts alike. Whether for warmth during a cold workday or for outdoor gatherings, the MH18B ensures reliable and effective heating.