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NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
These appliances are designed to operate on
natural or propane gas only.
Millivolt Models -
Input of millivolt models is shown in the fol-
lowing table:
CONGRATULATIONS!
In selecting this LENNOX Direct-Vent Gas Appliance you have chosen the finest and most
dependable fireplace to be found anywhere. It is a beautiful, prestigious, alternative to a
wood burning fireplace. Welcome to a Family of tens of thousands of satisfied LENNOX
Fireplace Owners.
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. The Care and Opera-
tion Instructions included here will assure that you have many years of dependable and
enjoyable service from your LENNOX product.
INTRODUCTION
The Fireplace models covered in this manual
are Direct-Vent sealed combustion gas fireplace
heaters designed for residential application.
Direct-Vent appliances operate with the com-
bustion chamber completely isolated from
the inside atmosphere. All air for combustion
is brought in from the outside and exhaust
gases are vented through the same direct vent,
vent system.
GENERAL INFORMATION
Note: Installation and repair should be per-
formed by a qualified service person. The
appliance should be inspected annually by a
qualified professional service technician. More
frequent inspections and cleanings may be
required due to excessive lint from carpeting,
bedding material, etc. It is imperative that the
control compartment, burners and circulating air
passage ways of the appliance be kept clean.
S'assurer que le brùleur et le compartiment des
commandes sont propres. Voir les instructions
d'installation et d'utilisation qui accompagnent
l'appareil.
Provide adequate clearances around air open-
ings and adequate accessibility clearance for
service and proper operation. Never obstruct
the front openings of the appliance.
Due to high temperatures the appliance should
be located out of traffic and away from furniture
and draperies. Locate furniture and window
coverings accordingly.
The millivolt appliances are designed to operate
on either natural or propane gas. A millivolt
gas control valve with piezo ignition system
provides safe, efficient operation. External
electrical power is required to operate the
optional electrically powered components if
installed. Electrical power must be wired during
appliance installation.
TABLE OF CONTENTS
Introduction .............................................page 2
General Information .................................page 2
Operation/Care of Your Appliance ............page 3
Variable Flame Adjustment .......................page 4
Glass Cleaning .........................................page 4
Maintenance .............................................page 4
Maintenance Schedule .............................page 5
Front Glass Enclosure Panel,
Removal and Installation ........................page 6
Burner Adjustments .................................page 6
Flame Appearance and Sooting ................page 6
Adjustment ...............................................page 6
Log Placement .........................................page 7
Embers & Volcanic Stone Placement .......page 8
Millivolt Appliance Checkout ....................page 8
Electronic Appliance Checkout .................page 8
Accessory Components ...........................page 8
Wiring Diagrams ......................................page 11
Warranty ..................................................page 11
Replacement Parts ...................................page 11
Product Reference Information ................page 11
Lighting Instructions – Millivolt ...............page 12
Lighting Instructions – Electronic ............page 14
Troubleshooting Guide – Millivolt.............page 16
Troubleshooting Guide – Electronic .........page 17
Replacement Parts List ............................page 18
Electronic Models -
Electronic models have a modulating gas valve.
Input of electronic models is shown in the
following table:
WARNING: THESE FIREPLACES ARE
VENTED HEATERS. DO NOT BURN
WOOD OR OTHER MATERIAL IN THESE
APPLIANCES.
WARNING: IMPROPER INSTALLATION,
ADJUSTMENT, ALTERATION, SERVICE
OR MAINTENANCE CAN CAUSE INJURY
OR PROPERTY DAMAGE. REFER TO
THIS MANUAL. FOR ASSISTANCE OR
ADDITIONAL INFORMATION CONSULT
A QUALIFIED INSTALLER, SERVICE
AGENCY OR THE GAS SUPPLIER.
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These appliances comply with National Safety
Standards and are tested and listed by Omni-
Test Laboratories (Report No. 116-F-39-5)
to ANSI Z21.88 (in Canada, CSA-2.33), and
CAN/CGA-2.17-M91 in both USA and Canada,
as vented gas fireplace heaters.
The Installation must conform to local codes or,
in the absence of local codes, with the National
Fuel Gas Code, ANSI Z223.1/NFPA 54, or the
Natural Gas and Propane Installation Code, CSA
B149.1. The appliance, when installed, must be
electrically grounded in accordance with local
codes or, in the absence of local codes, with the
National Electrical Code, ANSI/NFPA 70, or the
Canadian Electrical Code, CSA C22.1.
DO NOT ATTEMPT TO ALTER OR MODIFY
THE CONSTRUCTION OF THE APPLIANCE OR
ITS COMPONENTS. ANY MODIFICATION OR
ALTERATION MAY VOID THE WARRANTY,
CERTIFICATION AND LISTINGS OF THIS UNIT.
Electronic appliances are designed to operate on
natural or propane gas. An electronic intermit-
tent pilot ignition system provides safe, efficient
operation. External electrical power is recom-
mended to operate these units. If the system
operates on line voltage with 3V adapters, two
(2) "D" batteries can be used as a backup in case
of a power outage. The electronic appliance can
be operated solely with two (2) "D batteries.
This manual is part of a set of three supporting
this product. Refer to manual 850,036M for
Installation Instructions and 750,201M for Log
Placement Guide.