4 Installation Instructions

A. Install the Damper Stop

•Open the damper to the fully open position and secure it open with the stop as shown in Figure 4.1.

•If the damper stop doesn’t fit your application, use a permanent means that will keep the damper open at least to the minimum vent opening as outlined in Table 1, Section 1.B.

Figure 4.2 Center Grate Over Burner Pan

D. Place Sand and Rockwool

• Pour the sand into the burner pan. Sand should follow the slope of pan, covering it and the burner tube completely.

• Allow the sand to spill out the front of the pan and over the sides onto the fireplace floor.

• Lightly place dime-sized pieces of rockwool evenly on top of the sand or vermiculite.

Figure 4.1 Damper Operation

•The gas burns at the point of the least resistance. In case of an uneven flame pattern it may be necessary to adjust the materials in the pans (using an object such as a screwdriver) to achieve the desired effect.

B. Install the Burner/Pan Assembly

The burner/pan assembly is shipped ready for right-hand gas connection. See Section 3.B. for left-hand connection.

•Remove the existing cap or gas jet assembly from the gas stub in your fireplace. Clean the threads using a wire brush or steel wool. Apply Teflon tape or pipe dope to the steel fitting and attach the provided brass adapter to the stub.

•Place the burner/pan assembly in the fireplace. The pan should be centered both front to back and side to side.

•Bend the provided gas connector to facilitate its installation between the burner and the gas stub.

•Attach one end of the gas connector to the brass elbow or safety pilot fitting. Attach the other end to the brass adapter at the gas tube.

C. Install the Grate

•The grate should be centered over the burner pan, side to side. If the grate sits toward the front of the burner pan, the flames will be larger coming through the logs. If the grate sits toward the back of the burner pan, the ember bed will be more prominent. Refer to Figure 4.2.

WARNING

Explosion Risk

•Follow rockwool placement instructions in this manual.

•Replace rockwool material annually.

Improperly placed rockwool interferes with proper burner operation.

Note: For best results, do not pack down the rock wool. The placement of rock wool can have an effect on flame pattern and may need to be adjusted to achieve a desired appearance.

Hearth & Home Technologies • Fireside Burner/Hearth Kits • 4004-304 Rev C • 08/2010

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Hearth and Home Technologies MHK24NG, MHK18NG Installation Instructions, Install the Damper Stop, Place Sand and Rockwool
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MHK18NG, STMHK24NG, MTMHK18NG, MHK24NG specifications

Hearth and Home Technologies has consistently delivered innovative heating solutions, and their line of gas fireplaces is no exception. The MHK24NG, MTMHK18NG, STMHK24NG, and MHK18NG models exemplify the brand's commitment to quality, efficiency, and style.

The MHK24NG is a powerful natural gas fireplace that boasts a heat output of up to 29,000 BTUs. Its clean lines and contemporary design make it a perfect addition to modern spaces, while the impressive heat output ensures warmth in larger rooms. An included hand-held remote control adds convenience, allowing users to adjust settings without leaving their seats.

Similarly, the MTMHK18NG offers versatility with a slightly smaller footprint, providing up to 20,000 BTUs. Designed for easy installation, this model features an adjustable flame and a variety of decorative media options, allowing homeowners to customize the look of their fireplace. The MTMHK18NG's compact size makes it an excellent choice for smaller rooms or apartments, where space is at a premium.

The STMHK24NG combines traditional aesthetics with modern technology. It provides a remarkable 32,000 BTUs and includes advanced safety features, such as a built-in oxygen depletion sensor, which automatically shuts off the gas supply if it detects low oxygen levels. This model also provides an array of interchangeable front options, ensuring that it can complement any home decor or personal style.

The MHK18NG rounds out the lineup with its unique balance of efficiency and design. With a heat output of 18,000 BTUs, this fireplace is ideal for those seeking a cozy atmosphere without excessive energy consumption. It is equipped with an easy-to-use remote control and features such as adjustable flame height and temperature control, making it a user-friendly option for all home styles.

All four models are designed with energy efficiency in mind, meeting rigorous Environmental Protection Agency standards. They contribute to reduced energy consumption while providing ample warmth. The use of advanced gas technology in these fireplaces ensures consistent performance and reliable operation throughout their lifespan.

In summary, Hearth and Home Technologies’ MHK24NG, MTMHK18NG, STMHK24NG, and MHK18NG gas fireplaces showcase the perfect blend of style, technology, and performance. Whether enhancing the comfort of a contemporary home or adding warmth to a more traditional space, these models offer a range of features designed to meet diverse needs and preferences. With safety and efficiency at the forefront, these gas fireplaces are a superior choice for anyone looking to enhance their living space with both aesthetics and functionality.
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