Operating Instructions

For Model 125NG (for use with natural gas)

Piping must be clean and free from scale or burrs.

Install regulator supplied with heater. Connect with 1/2” NPT nipple (not included) to Control Valve.

Connect the appliance to an appropriately designed and installed fuel supply system. This system must include an approved manual shut-off valve which is readily accessible and is located within six (6) feet of the appliance.

Additionally, a sediment trap or drip leg must be located upstream of this manual shut-off valve. Refer to the appropriate (natural gas) installation code noted above. If a flexible connector is used, it must be of an approved type.

Before attempting to ignite the appliance, all gas fittings and connections must be thoroughly checked for gas leaks. Apply a small amount of a mild soap and water solution to all fittings and connections and observe for escaping bubbles. If any leaks are detected, shut off the gas supply to the appliance immediately. Wait a minimum of five minutes, repair the leak(s) and retest for leakage. Dry all fittings and connections after leak testing.

WARNING

NEVER USE A FLAME FOR GAS LEAK

TESTING.

WARNING

IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE.

CAUTION

THIS APPLIANCE IS HOT DURING NORMAL OPERATION, AVOID PHYSICAL CONTACT.

CAUTION

DO NOT PLACE CLOTHING OR OTHER COMBUSTIBLE MATERIALS ON THIS APPLIANCE.

DO NOT operate this heater if any part has been under water. Call a qualified service technician to inspect the appliance and to replace any part of the control system or gas control valve which has been under water.

This appliance must be installed and operated only in locations where the potential for physical damage to the appliance is reduced to a minimum. The owner/operator of this appliance must ensure that precautions are taken to protect the appliance from physical damage.

LIGHTING AND SHUT DOWN

Lighting the Heater

1Before attempting the light the heater, smell all around the heater area for gas. Be sure to smell next to the floor because LP Gas is heavier than air and will settle on the floor. Turn on the gas supply to the appliance and check all fittings and connections for gas leaks using a mild soap and water solution. NEVER use a match to check for gas leaks. Should a gas leak occur, shut off the gas supply to the appliance immediately. Wait a minimum of five minutes before repairing the leak.

2Use only the fuel intended for this appliance. Check the appliance rating plate for the correct fuel information.

3Turn the gas valve knob clockwise to the “OFF” position. See Fig. 1 and Fig. 2 for location of appliance parts.

4Wait a sufficient length of time (at least five minutes) to allow gas which may have accumulated in burner compartment to escape.

5Turn on the main gas supply.

6Turn the gas valve knob counter-clockwise to the “PILOT” position (see Fig. 1).

7a Depress and turn Control Knob counterclockwise to “Pilot” position and hold for 1-2 minutes. This may take longer to purge air from the supply hose depending on the length of the hose being used.

Depress red spark ignition button to light pilot flame (repeat until pilot lights) and continue to hold Control Knob at “Pilot” positionfor 30-60 seconds to enable Pilot Light Safety System.

Fully turn Control Knob to “Hi” position to light burner. or...

7b To light the pilot, move the lighting hole cover aside (see Fig. 1) and place a lighted match into the hole. Depress the gas valve knob and hold while lighting and observing the pilot burner. Ensure that the pilot burner ignites from the match. Allow the pilot to burn approximately 30 seconds before releasing the gas valve knob. If pilot does not remain lighted, repeat the lighting operation allowing a longer period of time before releasing the gas valve knob.

NOTE: In cases where long runs of gas supply lines have been installed ahead of the appliance, it may be necessary to bleed trapped air out of the supply lines before lighting the pilot. New installations generally require bleed of supply lines. Wait a minimum of five minutes after bleeding the supply lines before attempting to light the heater.

Adjust pilot if necessary as noted under “Pilot Burner Adjustment.”

Enerco Group, Inc. Gas-Fired Infra-Red Portable Construction Heater

Operating Instructions and Owner’s Manual

HS125LP, HS125NG, MH125LP specifications

Gas-fired products are a popular choice for heating and energy needs due to their efficiency and reliability. Among the various models available, the HS125LP, MH125LP, and HS125NG stand out for their advanced features and technologies tailored to meet diverse consumer demands.

The HS125LP and MH125LP models are designed specifically for use with propane, providing flexible installation options and consistent heating performance. Meanwhile, the HS125NG is optimized for natural gas, allowing users to tap into a more sustainable energy source. Each product features a robust construction, ensuring longevity and resistance to wear under different operating conditions.

One of the main features of these models is their high-efficiency ratings. They are engineered to maximize energy conversion, which translates to lower operational costs and reduced environmental impact. This is achieved through innovative burner designs that ensure complete combustion and minimized emissions. The incorporation of advanced heat exchanger technology enables these units to transfer heat effectively while also maintaining safety standards.

These gas-fired products are also equipped with user-friendly controls that enhance the overall user experience. Digital thermostat systems provide precise temperature management, allowing users to maintain desired comfort levels while optimizing energy usage. Additionally, many models include smart connectivity options, enabling remote access and control through mobile devices.

Safety is a paramount concern with gas-fired products, and the HS125 series does not compromise in this regard. They come equipped with multiple safety features, including flame failure protection, pressure regulators, and multiple sensors that monitor operational parameters. These features work in tandem to prevent any potential hazards and ensure peace of mind for the user.

Furthermore, the HS125LP, MH125LP, and HS125NG models are designed for quiet operation, making them suitable for a variety of environments, from residential to commercial applications. Their compact designs also facilitate easy installation in tight spaces without the need for extensive modifications.

In conclusion, the HS125LP, MH125LP, and HS125NG gas-fired products represent a blend of efficiency, safety, and modern technology. With their specialized designs catering to both propane and natural gas, these models offer reliable heating solutions for today's energy-conscious consumers. Whether for warming homes, powering appliances, or supporting industrial processes, these gas-fired units stand out in the market for their innovative approach to heating technology.