Table Of Contents; Using This Manual - Lennox FIRESTAR MERIT GC3 Installation And Operation Manual

CONGRATULATIONS!
When you purchased your new gas fireplace insert, you joined
the ranks of thousands of individuals whose answer to their home
heating needs reflects their concern for aesthetics, efficiency
and our environment. We extend our continued support to help
you achieve the maximum benefit and enjoyment available from
your new gas fireplace insert.
Thank you for selecting a Lennox Hearth Products gas fireplace
insert as the answer to your home heating needs.

TABLE OF CONTENTS

Using this Manual ...................................................... 2
Safety and Warning Information
Orifice Size / Altitude Adjustment ........................................ 5
Fireplace Requirements ................................................... 5
Codes and Approvals ....................................................... 5
New York City, New York (MEA) .......................................... 5
Requirements For The Commonwealth of Massachusetts ............ 5
Pre-Installation............................................................ 6-8
Features ............................................................ 6
Packaging List ..................................................... 6
Ratings.............................................................. 6
Insert and Fireplace Dimensions ............................... 6
Clearances to Combustibles ..................................... 8
Insert Leveling ..................................................... 8
Installation ............................................................... 9-13
Venting Installation ............................................... 9
Flue Collar Connection ........................................... 9
Zero Clearance Fireplace Installation ........................ 10
Brick Liner Installation .......................................... 10
Log Installation ................................................... 10
Surround Panels Installation ................................... 11
Lower Front Filler Panel ........................................ 12
2
....................................... 3
Gas Line Installation ............................................ 12
Gas Pressure Requirements .................................... 12
Gas Supply Line Sizing .......................................... 12
LP and Natural Gas Supplies ................................... 13
Air Shutter Adjustment .......................................... 13
Attaching Safety In Operation Warnings ............................... 14
Operating Instructions ................................................ 15-19
Pre-Lighting Checklist ........................................... 15
Lighting Instructions ............................................. 15
Flame Color and Behavior ...................................... 16
Replacing Burner Orifices ...................................... 16
Paint Curing ....................................................... 17
Quiet Operation ................................................... 17
Blower ............................................................. 17
Optional Wall Thermostat ....................................... 17
"On-Off" Switch And Thermostat .............................. 17
Pilot Adjustment .................................................. 18
Millivolt Control System ........................................ 18
Millivolt Wiring Diagram ....................................... 19
Maintenance and Servicing .......................................... 19-21
Maintenance Checklist .......................................... 19
Glass Maintenance .............................................. 19
Glass Door Removal ............................................. 20
Glass Door Cleaning and Repair ............................... 20
Blower Wiring Diagram ......................................... 21
Blower Removal .................................................. 21
Electrical Requirements ........................................ 21
Fuel Conversion and Cassette Installation ................... 21
Troubleshooting ............................................................ 22
Replacement Parts ........................................................ 23
Accessories ................................................................. 24
Insert Labels ............................................................ 25-26
Product Reference Information .......................................... 28

USING THIS MANUAL

Please read and carefully follow all of the instructions found in this
manual. Please pay special attention to the safety instructions provided
in this manual.
PRODUCT IS SUBJECT TO CHANGE WITHOUT NOTICE