OPERATING INSTRUCTIONS

PREPARING FOR OPERATION

1.Check the heater for possible shipping damage. If any is found, immediately notify the factory.

2.Follow all of the "Precautions".

3.Connect the POL fitting of hose and regulator assembly to the propane cylinder by rotating the POL nut counterclockwise into the propane cylinder's valve outlet and securely tighten with a wrench.

4.Connect the hose to the heater by rotating the hose fitting clockwise.

5.Securely tighten all gas connections.

6.Open the cylinder's gas valve and check all gas connections with a soap and water solution. DO NOT USE A FLAME.

7.Connect power cord to well-grounded 115V, 60 Hz, 1Ø source of power.

8.When using an extension cord, make certain that it is a 3- wire (grounded) cord of proper wire size.

START

1.Before heater ignition, always allow heater fan (blower) to run for 20 seconds to purge fuel.

2.Slowly open the main valve at propane cylinder.

3.Depress the fuel valve button to light the 55FAV, 85FAV and 125FAVmodels.

4.After the heater lights, keep the gas valve button depressed for 15 seconds then release and the heater will continue to operate.

5.Adjust burn rate by setting control knob to desired level.

STOP

1.Securely close valve on the propane cylinder.

2.Continue to operate heater until all fuel in the hose has burned.

3.Unplug the power cord.

RESTART AFTER SAFETY SHUTDOWN

1.Securely close valve at propane cylinder. Unplug heater.

2.Wait 5 minutes.

3.Restart following "Start" procedure.

MAINTENANCE AND STORAGE

1.The heater should be inspected before each use, and at least annually by a qualified person.

2.Before each use, check the soft "O" ring seat at the bullnose of the POL fitting. If the "O" ring is cut, scuffed, or otherwise damaged, replace it with part number 73786.

3.Turn off the gas at the LP-gas supply cylinder(s) when the heater is not in use.

4.When the heater is to be stored indoors, the connection between the LP-gas supply cylinder(s) and the heater must be disconnected and the cylinder(s) removed from the heater and stored out of doors and in accordance with Chapter 5 of the standard for Storage and Handling of Liquefied Petroleum GasesANSI/NFPA58 and CSAB149.1, Natural Gas and Propane Installation Code.

SERVICING

A hazardous condition may result if a heater is used that has been modified or is not functioning properly. When the heater is working properly:

•The flame is contained within the heater.

•The flame is essentially blue with perhaps some yellow tipping.

•There is no strong disagreeable odor, eye burning or other physical discomfort.

•There is no smoke or soot internal or external to the heater.

•There are no unplanned or unexplained shut downs of the heater.

The parts lists and wiring diagram show the heater as it was constructed. Do not use a heater which is different from that shown. In this regard, use only the hose, regulator and cylinder connection fitting (called a POL fitting) supplied with the heater. IMPORTANT Match the color stripe on the hangtag attached to the hose assembly with the color on the label located near the propane inlet fitting on the heater. Do not use alternates. For this heater, the regulator must be set as shown in "specifications". If there is any uncertainty about the regulator setting, have it checked.

A heater which is not working right must be repaired, but only by a trained, experienced service person.

In-warranty products will be repaired with no charge for either parts or labor. Please include a brief statement indicating date, place of purchase, the nature of the problem and proof of purchase.

Out-of-warrranty products will be repaired with a charge for parts and labor.

Heater Elevation Adjustment

This heater is equiped with an elevation adjustment panel located at the exhaust end of the control box.

1.Do not adjust the heater combustion tube elevation while heater is running or hot. Adjustments to elevation should only be made after the heater has cooled to touch.

2.To adjust the heater combustion tube elevation, turn the adjustment screw knob counterclockwise and lift the combustion tube to desired position.

70056 Rev. A 5/05

Enerco Group, Inc. Forced Air Propane Construction Heater

6

Operating Instructions and Owner’s Manual

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Enerco HS55FAV, MH125FAV, MH85FAV, MH55FAV, TS55FAV, TS125FAV, HS85FAV, HS125FAV owner manual Operating Instructions, Servicing
Page 5 Page 7

HS125FAV, HS55FAV, HS85FAV, MH55FAV, MH125FAV specifications

Enerco's series of industrial heaters, including the TS55FAV, HS85FAV, MH55FAV, MH85FAV, and MH125FAV models, are designed to provide efficient, reliable heating solutions for various applications. These heaters cater to diverse needs, from construction sites to workshops, ensuring optimal comfort and safety even under challenging conditions.

The Enerco TS55FAV model stands out for its portable design and substantial heating capacity. It offers an impressive 55,000 BTU output, making it suitable for medium-sized spaces. Its advanced safety features, including a tip-over shut-off switch and a built-in thermostat, help maintain a stable environment. The durable construction ensures longevity while being easy to transport.

Next in the lineup is the HS85FAV, which delivers an output of up to 85,000 BTUs. This model is particularly noted for its efficient fuel consumption and exceptional performance. The HS85FAV incorporates a forced air system, ensuring quick heat distribution. Its rugged design makes it ideal for outdoor use in harsh weather conditions.

The MH55FAV brings versatility to the series by offering both direct and indirect heating options. This model's 55,000 BTU output makes it a reliable choice for temporary heating needs. It utilizes innovative technology that allows for the efficient burning of fuels while minimizing emissions. Additionally, the MH55FAV features a sturdy frame that allows for easy mobility across job sites.

The MH85FAV is an upgrade, pushing the output to 85,000 BTUs, further enhancing its capability for larger spaces. It carries the same focus on environmental considerations with low emissions and high fuel efficiency. The MH85FAV's ergonomic design and ease of use simplify operation, making it a preferred option for contractors.

At the top of the range is the MH125FAV, boasting an impressive output of 125,000 BTUs. This model is engineered for heavy-duty applications, delivering robust heating for extensive areas. Its built-in thermostat and safety shut-off features ensure that users can operate it with confidence. The MH125FAV also includes a high-performance blower for optimal heat dispersal, making it ideal for challenging industrial environments.

In summary, the Enerco heaters TS55FAV, HS85FAV, MH55FAV, MH85FAV, and MH125FAV represent a comprehensive range of heating solutions, each equipped with unique features and technologies designed for performance, safety, and efficiency. Whether for construction, industrial facilities, or outdoor events, these models meet the diverse requirements of users, ensuring warm environments in various settings.
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