Hearth and Home Technologies MTMHK18NG, STMHK24NG Appliance Preparation, Gas Supply Connection

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3 Appliance Preparation

Note: Have the gas supply line installed in accordance

 

WARNING

with local building codes, if any. If not, follow ANSI 223.1.

 

Installation should be done by a qualified installer approved

 

Fire Risk

and/or licensed as required by the locality. (In the Common-

 

 

Explosion Risk

wealth of Massachusetts installation must be performed by

 

 

Verify inlet pressures.

a licensed plumber or gas fitter.)

 

 

• High pressure may cause overfire

 

 

 

 

 

 

condition.

A. Gas Supply Connection

• Low pressure may cause explosion.

Install regulator upstream of valve if line

Ensure fittings are of the appropriate size and type on the

pressure is greater than 1/2 psig.

gas line connection. If the tubing has to be cut to length be

 

sure to use the proper cutting and flaring tool. Also, be care-

 

ful not to crimp the tubing while bending. If the tubing be-

B. Convert to Left Side Gas Piping

comes crimped, do not use for installation.

 

 

• Remove the brass elbow from the right side.

WARNING

Gas Leak Risk

•Support control when attaching pipe to prevent bending gas line.

Joint compound or Teflon tape must be used on all threaded male connections to ensure a tight seal.

WARNING

Fire Risk

Explosion Risk

Personal Injury Risk

An explosion could occur if a connection is made directly to an unregulated propane (LP) tank.

Note: An individual manual shutoff valve (not supplied) is required when installing this appliance. The manual shutoff valve must be located in an easily accessible area, no more than 6 feet from the appliance.

Note: A listed (and Commonwealth of Massachusetts approved) 1/2 in. (13 mm) T-handle manual shut-off valve and flexible gas connector are connected to the 1/2 in. (13 mm) control valve inlet.

•If substituting for these components, please consult local codes for compliance.

•Remove the cap from the left side.

Note: Prior to installing the fittings, use Teflon tape or joint compound on the male threads.

•Replace the cap on the opposite end of the burner tube.

•Install the brass elbow on the left side of the burner.

WARNING

Fire Risk

Explosion Risk

•Gas build-up during line purge may ignite.

•Purge should be performed by qualified technician.

•Ensure adequate ventilation.

•Ensure there are no ignition sources such as sparks or open flames.

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

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Contents Commonwealth of Massachusetts What to do if you smell gasListing Label Information/Location Homeowner Reference InformationTable of Contents Appliance Certification Listing and Code ApprovalsTools and Supplies Needed Getting StartedSize of Firebox Negative PressureShock Risk Fire Risk Components of the Gas Hearth KitGas Supply Connection Appliance PreparationConvert to Left Side Gas Piping Fire Risk Explosion Risk Asphyxiation Risk Gas PressureHigh Altitude Derate Install the Grate Installation InstructionsInstall the Damper Stop Install the Burner/Pan AssemblyAdjust the Burner Flame Install the LogsInspect the Venting System Lighting Instructions Operating InstructionsFire Risk High Temperatures Important SafeguardsGlass Doors Servicing Your Appliance Annual Inspection Cleaning Your ApplianceTroubleshooting Maintaining and Servicing the ApplianceMHK Hearth Kit Assembly Replacement PartsReference Materials Qty Description of PartSTMHK-NG STMHK18NG STMHK24NG Page Page Dido C O a T R D

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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