Table of Contents

1 Listing and Code Approvals

A. Appliance Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

B. BTU Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

C. High Altitude Installations . . . . . . . . . . . . . . . . . . . . . . . . . . 4

D. Non-Combustible Materials Specification. . . . . . . . . . . . . . 4

E. Combustible Materials Specification . . . . . . . . . . . . . . . . . 4

2 Getting Started

A. Design and Installation Considerations . . . . . . . . . . . . . . . 5

B. Tools and Supplies Needed . . . . . . . . . . . . . . . . . . . . . . . . 5

C. Inspect Appliance and Components. . . . . . . . . . . . . . . . . . 5

3 Fireplace Size Requirements

A. Minimum Fireplace Opening . . . . . . . . . . . . . . . . . . . . . . . 6 B. Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4 Termination Locations

A. Vent Termination Minimum Clearances . . . . . . . . . . . . . . . 8

5 Vent Information and Diagrams

A. Vent Table Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

B. Horizontal Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

C. Measuring Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

6 Installation Preparation

A. Flue Damper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 B. Chimney . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 C. Gas Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 D. Hearth or Hearth Extension . . . . . . . . . . . . . . . . . . . . . . . 10 E. Fireplace Conversion Notice . . . . . . . . . . . . . . . . . . . . . . 10 F. Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

7 Installing Vent Pipe and Appliance

A. Venting Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

B. Connecting Vent Pipe. . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

C. Placing, Securing and Leveling the Appliance . . . . . . . . . 12

D. Installing Termination Cap . . . . . . . . . . . . . . . . . . . . . . . . 13

8 Gas Information

A. Fuel Conversions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

B. Gas Pressures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

C. Gas Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

9 Electrical Information

A. Wiring the Appliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 B. Optional Junction Box Installation . . . . . . . . . . . . . . . . . . 17

10 Finishing

A. Mantel Projections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

11 Appliance Setup

A. Remove Shipping Materials . . . . . . . . . . . . . . . . . . . . . . . 20

B. Clean the Appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

C. Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

D. Ember Placement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

E. Positioning the Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

F. Glass Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

G. Air Shutter Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

12 Operating Instructions

A. Before Lighting Appliance. . . . . . . . . . . . . . . . . . . . . . . . . 25 B. Lighting Appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 C. Check Pilot Flame Appearance . . . . . . . . . . . . . . . . . . . . 27 D. After Appliance is Lit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 E. Frequently Asked Questions . . . . . . . . . . . . . . . . . . . . . . 28

13 Troubleshooting

A. Standing Pilot Ignition System . . . . . . . . . . . . . . . . . . . . . 29

14 Maintaining and Servicing Appliance

A. Maintenance Tasks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

15 Reference Materials

A. Appliance Dimension Diagram. . . . . . . . . . . . . . . . . . . . . 33

B. Vent Kits Components . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

C. Service Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

D. Limited Lifetime Warranty. . . . . . . . . . . . . . . . . . . . . . . . . 38

E. Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Î = Contains updated information.

Heat & Glo • MTL-Insert • 2145-900 Rev. D • 3/08

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MTL-INSERT specifications

The Heat & Glo LifeStyle MTL-INSERT is a remarkable gas fireplace insert that combines elegance, innovation, and cutting-edge technology to enhance the comfort and atmosphere of your home. Designed to seamlessly fit into existing masonry or factory-built fireplaces, the MTL-INSERT transforms any living space with minimal installation effort, making it a practical choice for both renovations and new builds.

One of the standout features of the LifeStyle MTL-INSERT is its contemporary style, which includes clean lines and a sleek facade. This insert is available in various sizes and configurations, allowing homeowners to select the ideal fit for their specific fireplace and aesthetic needs. The large viewing area provided by the expansive glass front ensures that the mesmerizing dance of the flames can be enjoyed from multiple angles in any room.

The MTL-INSERT is equipped with a powerful heat output, efficiently warming spaces without the need for additional heating sources. It utilizes advanced heat distribution technologies, including a blower system that circulates warm air throughout the room, making it not only a beautiful addition but also a functional one. With an impressive BTU range, it excels in heating capacities, ensuring comfort even in colder climates.

One of the key innovations of the LifeStyle MTL-INSERT is its use of the IntelliFire® technology. This patented system allows for easy control of the fireplace with a remote control, wall switch, or smart home integration, providing convenience and accessibility. The IntelliFire® technology also features an automatic ignition system, allowing for fast and reliable lighting of the flames without the hassle of manual starters.

Additionally, the LifeStyle MTL-INSERT is designed with safety and efficiency in mind. The unit is equipped with an oxygen depletion sensor (ODS) that automatically turns off the gas supply if the oxygen levels in the room become too low. This ensures peace of mind while enjoying the warmth and ambiance of the fireplace.

With environmentally friendly options, including a variety of fuel types such as natural gas or propane, the MTL-INSERT can cater to different homeowner preferences while maintaining optimal efficiency. The incorporation of high-quality materials and craftsmanship guarantees durability and longevity, ensuring that this investment will serve as a centerpiece in your home for years to come.

In conclusion, the Heat & Glo LifeStyle MTL-INSERT stands out as an exceptional choice for those seeking a modern and efficient gas fireplace insert. Its blend of advanced technologies, stylish design, and powerful heating capabilities make it a sought-after addition to any home, providing both comfort and an inviting atmosphere that families can enjoy together.
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