ASSEMBLY INSTRUCTIONS

NOTE: It is recommended by the manufacturer that a qualified individual install this appliance.

Your new DiamondGlo heater is shipped in one box and the logs are shipped in a separate box. Packed with the DiamondGlo heater is a thermostat that must be hooked to the appliance before it is operated. Please follow the instructions on page 7 for the installation of this thermostat.

1.Remove DiamondGlo heater from the box by cutting bands around the box and lifting the box off the heater.

2.Lift heater from the bottom of the box and place near the final location of the heater. CAUTION: Lift heater when moving. Do not slide heater on the floor.

3.Locate thermostat that was packaged with the heater and see instructions on page 7 of these instructions for installation of the thermostat.

4.The manufacturer has furnished a 3/8” flare brass fitting for connection to the gas line. If the gas line is anything but a 3/8” flare connection, this fitting must be changed to the appropriate fitting by the installer.

5.Connect the gas line to the fitting located at the back of the heater.

6.Remove the screen from the front of the heater by removing the screw from the middle top of the screen, and pulling the screen off by pulling on the two brass knobs located on the bottom of the screen.

7.Place the heater in its final location.

8.Make sure all gas connections are tight. Turn on gas and coat each joint with a soap and water solution and watch for air bubbles which will indicate leaks. Any leaks must be corrected before proceeding with installation. DO NOT USE A FLAME OR ANY IGNITION SOURCE TO CHECK FOR LEAKS.

9.Your DiamondGlo heater was leak tested before it left the factory, but it is recommended to check all connections for leaks.

10.Remove logs from box. Notice the notches in the larger logs and the numbers on the bottom of the same logs. The log placement is very important to the safe operation of the appliance.

11.NOTE: For correct log placement, match the log placement photo in this manual with the model number of your heater. The logs MUST be placed exactly as shown. If there is any evidence of carbon or blackening on the logs, they may be incorrectly placed. There should not be any carbon or blackening on the logs at any time.

12.Place the back log in the grooves on the elevated cradle toward the back of the grate making sure the grooves in the bottom of the log fit on the cradle.

13.Place the middle log in the grooves on the center elevated section of the cradle making sure the grooves in the bottom of the log fit on the cradle. This will position the middle log between the burner.

14.Place the front log on the front of the grate in front of the cradle making sure the grooves on the bottom and front of the log fit the bars on the grate.

15.Place the small top logs in the grooves on top of the front and back log, making sure these logs lay across the middle log in the appropriate groove.

16.Match the model number of your heater with the heater model number on page 12 of this instruction manual. The log placement should look like this. If it doesn’t, follow steps 10 through 16 above.

17.Replace the front screen on the heater by sliding the two sides into the notches and replacing the screw in the top middle of the screen.

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Heatmaster HMDGII, HMDGJ manual Assembly Instructions
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HMDGII, HMDGJ specifications

Heatmaster has established itself as a leader in high-performance outdoor wood-burning furnaces, with the HMDGJ and HMDGII models exemplifying their commitment to quality and innovation. Both units are designed to provide efficient, environmentally friendly heating solutions for residential and commercial applications, each with its unique features and advanced technology.

The HMDGJ model is known for its robust construction and user-friendly design. It features a unique "Dual Feed" system, allowing for the use of various fuels, including wood, pellets, and biomass, providing versatility and convenience for users. This model is equipped with a high-efficiency heat exchanger, which maximizes heat transfer while minimizing emissions, ensuring that more heat reaches your home and less escapes into the atmosphere. The HMDGJ also incorporates a state-of-the-art control system, allowing users to easily adjust settings and monitor performance through a digital display, making it an ideal choice for those who appreciate modern technology.

On the other hand, the HMDGII model boasts enhanced insulation and a larger firebox, which significantly increases the furnace's heating capacity. This model is perfect for larger properties or applications where high heat demand is essential. The HMDGII is designed with a high-temperature rating, allowing it to burn hotter for longer periods, which translates into less frequent refueling and increased efficiency. Similar to the HMDGJ, the HMDGII also features a digital control system that provides real-time data on temperature, fuel levels, and overall efficiency, enabling users to optimize performance effortlessly.

Both models are built with heavy-duty steel construction and are coated with high-temperature paint to resist corrosion and weathering, ensuring longevity and durability in outdoor settings. They also come equipped with user-friendly access doors for easy loading and maintenance.

With the Heatmaster HMDGJ and HMDGII, you can expect superior performance and reliability. Their commitment to efficiency not only reduces fuel usage but also minimizes environmental impact, making these furnaces a responsible choice for conscientious users. Whether for residential heating or larger commercial needs, Heatmaster’s HMDGJ and HMDGII provide innovative solutions that combine technology, efficiency, and ease of use for optimal heating comfort.
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