Mendota FULLVIEW AA-11-02591 Supplement

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FULLVIEW LINEAR DIRECT VENT GAS FIREPLACE HEATER
Flush-Faced Model ML39-PF2, AA-11-02591
INSTALLATION and OPERATING INSTRUCTIONS MANUAL
DOCUMENT NO. ML39-PF2-0516
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
INSTALLATEUR : Laissez cette notice avec l’appareil.
CONSOMMATEUR : Conservez cette notice pour consulta-
tion ultérieure.
WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result
causing property damage, personal injury or loss
of life.
Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
WHAT TO DO IF YOU SMELL GAS
• Open windows.
• Do not touch electrical switches.
• Do not try to light any appliance.
• Extinguish any open flame.
• Do not use the phone in your building.
• Immediately call your gas supplier from a neigh-
bor's phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
• Installation and service must be performed by a
qualified installer, service agency or the gas sup-
plier.
WARNING
Do NOT use this appliance if any part has been under water.
Immediately call a qualified service technician to inspect the
appliance and to replace any part of the control system and
any gas control, which has been under water.
AVERTISSEMENT : Assurez-vous de bien suivre les in-
structions donné dans cette notice pour réduire au minimum
le risque d’incendie ou pour éviter tout dommage matéeriel,
toute blessure ou la mort.
• Ne pas entreposer ni utiliser d'essence ni d'autres vape-
rurs ou liquides inflammables dans le voisinage de cet
appareil ou de tout autre appareil.
• QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE
GAZ:
• Ne pas tenter d'allumer d'appareil.
• Ne touchez à aucun interrupteur. Ne pas vous servir
des téléphones se trouvant dans le batiment où vous
vous trouvez.
• Appelez immédiatement votre fournisseur de gaz depuis
un voisin. Suivez les instructions du fournisseur.
• Si vous ne pouvez rejoindre le fournisseur de gaz, appe-
lez le service dos incendies.
• L'installation et service doit être exécuté par un qualifié
installer, agence de service ou le fournisseur de gaz.

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SAFETY AND WARNING INFORMATION
READ and UNDERSTAND all instructions carefully before starting the appliance. FAILURE TO FOLLOW these instructions
may result in a possible fire hazard and will void the warranty.
Any safety screen or guard removed for servicing must be replaced before operating this appliance. Tout écran ou protecteur
retiré pour permettre l’entretien de l’appareil doit être remis en place avant de mettre l’appareil en marche.
THIS UNIT IS NOT FOR USE WITH SOLID FUEL.
Installation and repair should be PERFORMED by a qualified service person. The appliance and venting system should be
INSPECTED before initial use and at least annually by a professional service person. More frequent cleaning may be re-
quired due to excessive lint from carpeting, bedding, material, etc. It is IMPERATIVE that the unit’s control compartment,
burners, and circulating air passageways ARE KEPT CLEAN to provide for adequate combustion and ventilation air.
Always KEEP the appliance clear and free from combustible materials, gasoline, and other flammable vapors and liquids.
NEVER OBSTRUCT the flow of combustion and ventilation air. Keep the front of the appliance CLEAR of all obstacles and
materials for servicing and proper operation.
Due to high temperature, the appliance should be LOCATED out of traffic areas and away from furniture and draperies. En
raison des températures élevées, l’appareil devrait être installé dans un endroit où il y a peu de circulation et loin du mobilier
et des tentures.
Clothing or flammable material SHOULD NOT BE PLACED on or near the appliance. On ne devrait pas placer de vêtements
ni d’autres matières inflammables sur l’appareil ni à proximité.
Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the
fireplace and to replace any part of the control system and any gas control which has been under water".
«Ne pas se servir de cet appareil s'il a été plongé dans l'eau, complètement ou en partie. Appeler un technicien qualifié
pour inspecter l'appareil et remplacer toute partie du système de contrôle et toute commande qui ont été plongés dans
l'lau
In the Commonwealth of Massachusetts:
•Installation must be performed by a licensed
plumber or gas fitter;
•
A CO detector shall be installed in the room where
the appliance is installed.
WARNING: Improper installation, adjustment, altera-
tion, service or maintenance can cause injury or prop-
erty damage. Refer to this manual. For assistance or
additional information consult a qualified installer, ser-
vice agency or the gas supplier.
FOR YOUR SAFETY
A qualified installer, service agency, or the gas sup-
plier must perform installation and service.
Do not store or use gasoline or other flammable va-
pors and liquids in the vicinity of this or any other appli-
ance.
WARNING
Do not operate this appliance with the glass removed,
cracked or broken. A licensed or qualified person
should do replacement of glass.
AVERTISSEMENT. Ne pas utiliser l’appareil si le pan-
neau frontal en verre n’est pas en place, est craqué ou
brisé. Confiez le remplacement du panneau à un tech-
nicien agréé.
WARNING
Mendota gas fireplaces are heat producing appliances.
Do not burn wood, paper or other materials in this fire-
place. This fireplace is designed as a supplement
heat source. It is advisable to have an alternative pri-
mary heat supply.
The installation must conform with local codes or, in the
absence of local codes, with the current National Fuel
Gas Code, ANSI Z223.1 (NFPA 54) or CAN/CGA
B149.1 Installation Code.
Installer l'appareil selon les codes ou règlements locaux,
ou, en l'absence de tels règlements, selon les Codes
d'installation CAN/CGA-B149.
This appliance may be installed in an aftermarket perma-
nently located, manufactured (mobile) home (USA Only),
where not prohibited by local codes.
This appliance is only for use with the type(s) of gas indi-
cated on the rating plate. A conversion kit is supplied
with this appliance.
Cet appareil peut être installé dans un maison préfab-
riquée (mobile) déjà installée à demeure si les règle-
ments locaux le permettent.
Cet appareil doit être utilisé uniquement avec les types
de gas indiqués sur la plaque signalétique. Ne pas l’uti-
liser avec d’autres gas sauf si un kitde conversion cer-
tifié est installé.

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Children and adults should be ALERTED to the hazards of high surface temperature and should STAY AWAY to avoid
burns or clothing ignition. Les enfants et les adultes devraient être informés des dangers que posent les températures de
surface élevées et se tenir à distance afin d’éviter des brûlures ou que leurs vêtements ne s’enflamment.
Young children should be CAREFULLY SUPERVISED when they are in the same room as the appliance. Toddlers, young
children and others may be susceptible to accidental contact burns. A physical barrier is recommended if there are at risk
individuals in the house. To restrict access to a fireplace or stove, install an adjustable safety gate to keep toddlers, young
children and other at risk individuals out of the room and away from hot surfaces. “Les jeunes enfants devraient être
surveillés étroitement lorsqu’ils se trouvent dans la même pièce que l’appareil. Les tout petits, les jeunes enfants ou les
adultes peuvent subir des brûlures s’ils viennent en contact avec la surface chaude. Il est recommandé d’installer une
barrière physique si des personnes à risques habitent la maison. Pour empêcher l’accès à un foyer ou à un poêle, installez
une barrière de sécurité; cette mesure empêchera les tout petits, les jeunes enfants et toute autre personne à risque d’avoir
accès à la pièce et aux surfaces chaudes.
These units MUST use one of the vent systems described in the Installing Your Fireplace section of the Installers Guide.
NO OTHER vent systems or components MAY BE USED.
This gas fireplace and vent assembly MUST be vented directly to the outside and MUST NEVER be attached to a chimney
serving a separate solid fuel-burning appliance. Each gas appliance MUST USE a separate vent system. Common vent
systems are PROHIBITED.
If the vent-air intake system is disassembled for any reason, reinstall per the instructions provided for the initial installation.
The vent system assembly for this fireplace must be periodically examined by a qualified service agency.
INSPECT the external vent cap on regular basis to make sure that no debris is interfering with the airflow. The flow of
combustion and ventilation air not to be obstructed
DO NOT abuse the glass door by striking the glass, slamming the door shut, etc.
Use only authorized parts and materials obtained from Johnson Gas Appliance Company when replacing defective or dam-
aged glass.
DO NOT USE abrasive cleaners on the glass door assembly. DO NOT ATTEMPT to clean the glass door when it is hot.
Turn off the gas before servicing this appliance. It is recommended that a qualified service technician perform an appliance
check-up annually.
DO NOT place furniture or any other combustible household objects within 36 inches of the fireplace front.

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TABLE OF CONTENTS
SAFETY AND WARNING INFORMATION ........................................................................................................................................... 2
TABLE OF CONTENTS ....................................................................................................................................................................... 4
SPECIFIC REQUIREMENTS FOR THE COMMON WEALTH OF MASSACHUSETTS .................................................................................. 6
ML39 FULL VIEW GAS FIREPLACE DIMENSIONS ................................................................................................................................ 7
ML39 FEATURES - QUICK REFERENCE INFORMATION ....................................................................................................................... 8
TECHNICAL SPECIFICATIONS FOR ML39 LINEAR ZC FIREPLACE .......................................................................................................... 9
CONGRATULATIONS ...................................................................................................................................................................... 10
BUILDING PERMIT AND INSTALLATION INSPECTION APPROVAL REQUIREMENTS .......................................................................... 10
GENERAL APPLIANCE SPECIFICATIONS ........................................................................................................................................... 11
MANTEL CLEARANCES ................................................................................................................................................................... 12
CLEARANCES TO COMBUSTIBLES FROM APPLIANCE SURFACES ...................................................................................................... 13
CLEARANCE TO SIDE WALL PROJECTIONS ...................................................................................................................................... 13
PLANNING THE INSTALLATION ....................................................................................................................................................... 14
ROUGH FRAMING DIMENSIONS .................................................................................................................................................... 15
FRAMING DEPTH AND FINISHING GUIDES ..................................................................................................................................... 16
ADJUSTABLE FRAMING BRACKETS ................................................................................................................................................. 17
FINISHING MATERIALS INSTALLATION ........................................................................................................................................... 17
DECORATIVE FRONTS INFORMATION: ........................................................................................................................................... 18
SAFETY BARRIER ............................................................................................................................................................................ 20
NON-COMBUSTIBLE FINISHING MATERIALS REQUIREMENTS ......................................................................................................... 20
RAISED HEIGHT INSTALLATION OF ML39 ....................................................................................................................................... 21
INSTALLATION OF FLAT PANEL TV ON TOP OF ML39 ...................................................................................................................... 22
ENAMEL PANORAMIC LINER AND FLOOR PLATE INSTALLATION REQUIREMENT ............................................................................ 23
BACKUP DC POWER INLET PORT INSTALLATION ............................................................................................................................ 24
GENERAL INFORMATION ............................................................................................................................................................... 25
GAS SUPPLY REQUIREMENTS ......................................................................................................................................................... 26
GAS PRESSURE REQUIREMENTS .................................................................................................................................................... 27
GAS INPUT RATE VERICATION REQUIREMENTS .............................................................................................................................. 28
GENERAL INSTALLATION INSTRUCTIONS ....................................................................................................................................... 29
GENERAL FLUE VENTING INSTRUCTIONS ....................................................................................................................................... 30
EXTERIOR VENT LOCATIONS AND RESTRICTIONS ........................................................................................................................... 31
FLUE VENTING COMPONENTS IDENTIFICATION ............................................................................................................................. 32
MASTER FLUE VENTING REQUIREMENTS CHART ............................................................................................................................ 33
APPROVED VENT SYSTEMS QUICK REFERENCE CHART ................................................................................................................... 35
MINIMUM RISE HORIZONTAL TERMINATION ................................................................................................................................ 36
VERTICAL RISE HORIZONTAL TERMINATION .................................................................................................................................. 37
VERTICAL THROUGH-THE ROOF VENTING ...................................................................................................................................... 39
VERTICAL THROUGH-THE-ROOF VENTING USING FOUR 900 ELBOWS ............................................................................................. 41

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ML39 DOOR OPERATION ............................................................................................................................................................... 42
LOCATION OF MASTER SWITCH AND SYNC SWITCH ....................................................................................................................... 43
REMOTE CONTROL TRANSMITTER FUNCTIONS .............................................................................................................................. 44
REMOTE TRANSMITTER OPERATING INSTRUCTIONS ...................................................................................................................... 45
“FIRST TIME” PILOT LIGHTING INSTRUCTIONS ............................................................................................................................... 47
IPI/STANDING PILOT SYSTEM INFORMATION ................................................................................................................................ 48
OPTIONAL BURNER MEDIA KITS .................................................................................................................................................... 49
FOREST OAK TWIG SET INSTALLATION INSTRUCTIONS ................................................................................................................... 51
DRIFTWOOD LOG KIT INSTALLATION INSTRUCTIONS ..................................................................................................................... 56
FLAME APPEARANCE ADJUSTMENT ............................................................................................................................................... 61
INSTALLATION CHECK OFF LIST ...................................................................................................................................................... 62
LIGHTING CHECK OFF LIST .............................................................................................................................................................. 62
TROUBLE SHOOTING THE ML39 FIREPLACE & MAINTENANCE INFORMATION ................................................................................ 63
MAINTENANCE .............................................................................................................................................................................. 64
NATURAL TO LP GAS CONVERSION ................................................................................................................................................ 66
LPG PRESSURE REGULATOR CONVERSION INSTRUCTIONS ............................................................................................................. 68
LP GAS PRESSURE REQUIREMENTS ................................................................................................................................................ 69
CHECKING FOR NORMAL BURNER IGNITION CHARACTERISTICS ..................................................................................................... 70
ML39 VALVE ASSEMBLY REPLACEMENT PARTS .............................................................................................................................. 71
ML39 GAS IGNITION SYSTEM WIRING DIAGRAM ........................................................................................................................... 72
GLASS FRAME ASSEMBLY REPAIR AND REPLACEMENT .................................................................................................................. 73
LISTING LABEL INFORMATION ....................................................................................................................................................... 74
MENDOTA WARRANTY QUALIFICATION & SERVICE REFERENCE FORM .......................................................................................... 77
MENDOTA EXTENDED PROTECTION AND LIMITED WARRANTY ...................................................................................................... 79

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SPECIFIC REQUIREMENTS FOR THE COMMON WEALTH OF MASSACHUSETTS
The information in this section applies to all installations performed in the Common Wealth of Massachusetts only.
For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or
in part for residential purposes and where the side wall exhaust vent termination is less than seven (7) feet above grade,
the following requirements shall be satisfied:
If there is no carbon monoxide detector with an alarm already installed in compliance with the most current edition
of NFPA 720, NFPA 70 and the Massachusetts State Building code in the residential unit served by the side wall horizontally
vented gas fueled equipment, a battery operated carbon monoxide detector with an alarm shall be installed in compliance
with the most current edition of NFPA 720. NFPA 70 and the Massachusetts State Building Code.
In addition to the above requirements, if there is not one already present, a carbon monoxide detector with an alarm
and a battery backup shall be installed and located in accordance with the installation requirements supplied with the de-
tector on the floor level where the gas equipment is installed. The carbon monoxide detector with an alarm shall comply
with 527 CMR, ANSI/UL 2034 Standards or CSA 6.19 and the most current edition of NFPA 720. In the event that the
requirements of this subdivision cannot be met at the time of the completion of the installation of the equipment, the installer
shall have a period of thirty (30) days to comply with this requirement; provided, however, that during said thirty (30) day
period, a battery operated carbon monoxide detector with an alarm shall be installed in compliance with the most current
edition of NFPA 720, NFPA 70 and the Massachusetts State Building Code. In the event that the side wall horizontally
vented gas fueled equipment is installed in a crawl space or an attic, the carbon monoxide detector may be installed on the
next adjacent habitable floor level. Such detector may be a battery operated carbon monoxide detector with an alarm and
shall be installed in compliance with the most current edition of NFPA 720, NFPA 70 and the Massachusetts State Building
Code.
A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum
height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled
heating appliance or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size, “GAS VENT
DIRECTLY BELOW, KEEP CLEAR OF ALL OBSTRUCTIONS”
A final inspection by the state or local gas inspector of the side wall horizontally vented equipment shall not be
performed until proof is provided that the state or local electrical inspector having jurisdiction has granted a permit for
installation of carbon monoxide detectors and alarms as required above.
(b) EXEMPTIONS: The following equipment is exempt from 248 CMR 5.08(2) (a) 1 through 4:
1. The equipment listed in Chapter 10 entitled “Equipment Not Required To Be Vented” in the most current edition
of NFPA 54 as adopted by the Board; and
2. Product Approved side wall horizontally vented gas fueled equipment installed in a room or structure separate
from the dwelling, building or structure used in whole or in part for residential purposes.
(c) When the manufacturer of Product Approved side wall horizontally vented gas equipment provides a vent-
ing system design or venting system components with the equipment, the instructions for installation of the equipment and
the venting system shall include:
1. A complete parts list for the venting system design or venting system; and
2. Detailed instructions for the installation of the venting system design or the venting system components.
(d) When the manufacturer of a Product Approved side wall horizontally vented gas fueled equipment does not
provide the parts for venting the flue gases, but identifies “special venting systems”, the following shall be satisfied:
1. The referenced “special venting system” instructions shall be included with the appliance or equipment installa-
tion instructions; and
2. The “special venting systems” shall be Product Approved by the Board, and the instructions for that system shall
include a parts list and detailed installation instructions.
(e) A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equip-
ment, all venting instructions, all parts lists for venting instructions, and/or all venting design instructions shall remain with
the appliance or equipment at the completion of the installation.

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ML39 FULL VIEW GAS FIREPLACE DIMENSIONS
Removable Cover Plate for Plumbing & Electrical
Access before unit is placed inside framed cavity.
Replace Lower Cover Plate before sliding unit into
framed cavity.
UPPER COVER PLATE
LOWER COVER PLATE
5" X 8" COAXIAL
VENT CONNECTOR
HEAT TRANSFER DUCT
CONNECTION PORTS
5" X 8" COAXIAL
VENT CONNECTOR
NON-COMBUSTIBLE
MATERIALS ONLY
ON HATCH AREA
WOOD FRAMING
STANDOFF TOP
ELECTRICAL SUPPLY
LINE INLET
GAS SUPPLY
INLET
2 3/8
3 3/8 5 5/8
8 3/8
46 3/4
13 3/8
2 7/16
12 1/2
39
50 5/8 7 7/8
36 3/8
19
28 1/8
29 1/8
7 3/4
11 3/8
46 3/4

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ML39 FEATURES - QUICK REFERENCE INFORMATION
Certification And Listing: Certified under ANSI Z21.88 (2014) • CSA 2.23 (2014) “Vented Gas Fireplace Heater " not for
use with solid fuel. Not to be used as primary heat source.
Efficiency Ratings: P.4 Fireplace Efficiency: 77.3%
External Dimensions: 48-1/4” Wide X 37” High X 19-1/2” Deep
Glass Size: NeoCeram Glass with non-reflective coating. Visible Glass measures 39” X 12-1/2”. Visible Glass Area equals
487.5 in2. Actual Glass size is 40-1/8” X 13-5/8”.
Minimum Fireplace Framing Dimensions Requirement: 48-1/4 Wide X 37” High X 19-1/2” Deep
Framing Materials Requirement: Minimum 2X4 Lumber
Hearth Protection Pad: NOT REQUIRED: Glass bottom edge is raised 9” within appliance body.
Electrical Supply Requirement: 120 VAC, 5 Amps, Un-switched, Junction Box provided inside appliance.
Vent System Requirements: 5”x8” Coaxial Rigid Vent System. MINIMUM INITIAL VERTICAL RISE REQUIRED IS 18” for
Natural Gas and 24” for LP Gas. Maximum Horizontal Vent Length with the Minimum Vertical Starter Section equals 6”.
Maximum Horizontal Vent run with 4 feet Vertical starter section connection equals 32 feet for NG and 27 feet for LPG..
Maximum Vertical vent run equals 42 feet.
Mantel Allowance: 8” Deep Mantel at 12” Above Top Convection Opening .Use the Approved Mantel Profile Chart.
Vent Damper Adjustment Available: A single Disc Damper is available for exhaust flow adjustments.
Controls: IPI Electronic Ignition System with AC Primary Power and DC Backup Power. Remote Control included. Accent
Light operates on AC Power only.
Blower System: Optional 210 CFM Dual Blower System. 120VAC, 2 Amps. Dedicated Hot Power only. No switches, Fan
Speed Controls or Light Dimmers are allowed in the same AC supply circuit. Optional fans are controlled using remote
control.
Accent Light System: Dual Accent Light System Included. Light can be turned on or off and dimmed from remote control.
Burner System: Single Ceramic Plaque Array burner.
Burner Shutter System: Manually controllable internal rotary Burner air shutter.
Burner Media Options: Must install one burner media. Driftwood Logs set with Natural Rocks, Twig Set with coals, Natural
Rock Set, Black Shades Rock Set, Diamond Clear Glass Pieces, Diamond Shape Black Glass Pieces, Round Clear Glass,
and Round Black Glass. Multiple Media types may be combined together..
Firebox Inner Lining Panels: Black Enamel, Midnight Metallic Enamel, Metallic Mocha Enamel, Metallic Silver Enamel
and Copper Enamel Panoramic options available. Each Firebox Panoramic Liner is supplied with matching Firebox Floor
Panel. One Firebox Inner Liner Kit must be installed before any use.
Natural Gas Information: Factory equipped for Natural Gas. 5”WC Minimum inlet pressure required. For NG applications,
Burner Orifice Size is 1/8”.
LPG Information: LP conversion kit #HA-96-00023 is an available option. 11”WC Minimum inlet pressure required.
CAUTION
THESE INSTRUCTIONS ARE TO
REMAIN WITH THE HOMEOWNER.
NOTE: This installation must conform to local codes. In the absence of
local codes, you must comply with the National Fuel Gas Code, ANSI
Z223.1-latest edition in the U.S.A. and the Natural Gas and Propane
Installation Code, CSA B149 Installation Codes in Canada.
This appliance may be installed in an after-
market, permanently located, manufactured
home (USA only) or mobile home, where not
prohibited by local codes.
This appliance is only for use with the type(s)
of gas indicated on the rating plate.

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TECHNICAL SPECIFICATIONS FOR ML39 LINEAR ZC FIREPLACE
High Fire - Adjustable to - Low Fire
BTUH. (MODEL ML39) NAT. GAS 34,250 23,000
BTUH. (MODEL ML39) LP GAS 34,250 28,000
NOTE: LPG CONVERSION KIT, #HA-96-00023 MUST BE PURCHASED SEPARATELY TO CONVERT TO BURN LPG
IN THIS FIREPLACE.
MAIN ORIFICE: [0-2000ft (610 m)]: #33 NG - #50 LP
[2000-4500ft (610-1370 m)]: #34 NG - #51 LP
OVERALL EFFICIENCY: [P.4: 77.3%]
CO-AXIAL DIRECT VENT FLUE: 5" INNER, 8" OUTER, RIGID
TOTAL WEIGHT: 300 POUNDS
SAFETY: AGA/CECERTIFIED IPI AUTO ELECTRONIC IGNITION SYSTEM
ACTIVATED WITH REMOTE CONTROL.
APPLIANCE CERTIFICATION AND TESTING AGENCY
INTERTEK TESTING SERVICES, ICBO#AA647-4
Certified under ANSI Z21.88 (2014) • CSA 2.23 (2014) “Vented Gas Fireplace " not for use with solid fuel. Approved for
bedroom installations and mobile homes. UL307B approved for "mobile homes, after first sale of home, not for recrea-
tional vehicles."
GAS REQUIREMENTS SUPPLY PRESSURE: GAS INLET: 1/2" N.P.T.
NAT. GAS: 7" W.C. (5" W.C. MIIN., 11" W.C. MAX.)
L.P. GAS: 11.0" W.C. (12" W.C. MIN., 13" W.C. MAX.)
ELECTRICAL REQUIREMENTS: 115 VOLT, LESS THAN 1.5 amps (6V DC BACKUP POWER SUPPLY)
APPROVED VENT SYSTEMS: DURAVENT, SELKIRK, AMERIVENT, SECURITY, BDM
MINIMUM CLEARANCES TO COMBUSTIBLE CONSTRUCTION
UNIT TO FLOOR 0in. (0mm) GLASS EDGE TO ADJACENT SIDEWALL 16in. (406 mm)
UNIT TO ENCLOSURE SIDEWALL 1/2in. (13mm) VENT PIPE TOP TO COMBUSTIBLES 3in. (76mm)
UNIT TO ENCLOSURE BACK WALL 1/2in. (13mm) VENT PIPE SIDES TO COMBUSTIBLES 1in. (25mm)
UNIT BOTTOM TO ENCLOSURE CEILING 44-3/16in. (1122 mm) VENT PIPE BOTTOM TO COMBUSTIBLES 1in. (25mm)
UNIT BOTTOM TO ROOM CEILING 60 in. (1524 mm) 8” MANTLE ABOVE DISCHARGE AIR OPENING 12 in. (304 mm)
MINIMUM COMBUSTIBLE ROUGH FRAMING DIMENSIONS
WIDTH = 48-1/4” (138 cm) HEIGHT = 37” (99.6 cm) DEPTH = 19-1/2” (49.5 cm)
THIS FIREPLACE INCLUDES A SEALED COMBUSTION SYSTEM, NEO-CERAM GLASS, ELECTRONIC IGNITION SYSTEM, AGA CERTIFIED
SAFETY SYSTEM, DUAL ACCENT LIGHTS and REMOTE CONTROL.
OPTIONS: BLACK, VINTAGE IRON, SWEDISH NICKEL, ANTIQUE GOLD, ANTIQUE COPPER GRACE, TRADITIONS AND WILLOW BROOK TRIM
KITS. Burner Media Options include Driftwood, Twig Set and many colored and clear glass bead burner media, Natural Rocks Kit.
WARNING: Do not operate this appliance with the
glass removed, cracked or broken. A licensed or
qualified person should do replacement of glass.
Derating at altitudes above 2000 feet: Installation of this ap-
pliance at altitudes above 2000 feet requires the gas input to be
derated by reducing the main burner orifice size. For NG and
LPG applications, the main burner orifice size for altitudes
above 2000 feet shall be #34 and #51, respectively. For NG
and LPG gas, input rate for installation above 2000 feet shall be
32,500 Btu/Hr. and 33,800 Btu/Hr. respectively.

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CONGRATULATIONS
You are the owner of a world-class modern gas direct vent sealed combustion fireplace.
This elegant, highly efficient Fireplace will be a constant source of comfort and fascination. It will be the focal point of beauty
and interest in your home.
This Mendota Gas Fireplace is an appliance incorporating modern aesthetics of fire viewing. Of particular interest is the low
fuel consumption and brilliant fire viewing afforded by the latest technology combustion system.
Carefully read the following instructions prior to actual installation. Proper Mendota Gas Fireplace installation and operation
will give you years of safe, trouble free comfort and enjoyment.
If you have any questions regarding installation or operation of your Mendota Fireplace please contact your local dealer.
...CAUTION...
Due to high temperatures, the Fireplace should be located out of traffic and away from furniture and draperies. Children
and adults should be alerted to the hazards of high surface temperature and should stay away to avoid burns or clothing
ignition. Young children should be carefully supervised when they are in the same room as the Mendota Gas Fireplace.
Clothing or other flammable material should not be placed on or near the Fireplace.
Any safety screen or guard removed for servicing an appliance must be replaced prior to operating this appliance.
The Mendota Gas Fireplace, although certified and listed as a Decorative Gas Appliance, operates at 70% Steady State
Efficiency (62% Fireplace Efficiency, P.4) and can be a source of supplemental heat with heat output equal to 24,000
Btu/Hr..
Installation, repair and any adjustments to logs or burner must be done by a qualified service person. The appliance should
be inspected before use and at least annually by a professional service person. More frequent cleaning may be required
due to excessive lint from carpeting, bedding material, carbon build-up, etc. It is imperative that control compartments,
burners and circulating air passageways of the appliance be kept clean. The burner and pilot flames and logs should be
visually checked periodically.
DO NOT use this appliance if any part has been under water or exposed to moisture corrosion. Immediately call a qualified
service technician to inspect the Fireplace and replace any part of the control system and any gas control, which has been
under water. DO NOT use this fireplace if the burner does not light immediately. Turn unit off and call Mendota approved
service person if there is any delay in burner light off.
It is Johnson Gas Appliance Company's policy that no responsibility is assumed by the Company or by any of its employees
or representatives for any damages caused by an inoperable, inadequate, or unsafe condition which is the result, either
directly or indirectly, of any improper operation, installation or servicing procedures.
BUILDING PERMIT AND INSTALLATION INSPECTION APPROVAL REQUIREMENTS
All installations of Mendota Fireplaces and Inserts must comply with all the requirements stated in this Installation and
Operating Instructions Manual. The Dealer and/or installer must also obtain all required Building Permits and Inspection
Approval from the local building inspection department or the local body having jurisdiction. In order to validate warranty
coverage, Mendota may require facsimile copies of the Building Permit and Inspection Approval forms. Failure to provide
adequate proof that the installation conforms to all local requirements and the requirements stated in the Installation and
Operating Instructions Manual will void all applicable warranty.
INSTALLER: THESE INSTRUCTIONS ARE TO REMAIN WITH HOMEOWNER.
HIGH ALTITUDE INSTALLATION INFORMATION: Prior to installing at altitudes higher than 7500, please con-
tact the Mendota technical service department for specific venting requirements and venting restrictions.

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GENERAL APPLIANCE SPECIFICATIONS
High Altitude Installation Information: Prior to installing at altitudes higher than 7500, please contact the Mendota
technical service department for specific venting requirements and venting restrictions.
MINIMUM ROUGH FRAMING DIMENSIONS
WIDTH (IN)
HEIGHT(IN)
DEPTH (IN)
48-1/4
37”
19-1/2
CEILING
NON-COMBUSTIBLE ZONE
37" MIN
ROUGH FRAMING
HEIGHT
35 1/16" MIN
UNIT BASE
TO 8" MANTEL
70" MIN
TO ROOM
CEILING
8" MANTEL DEPTH
AT HEIGHTS SHOWN
58 1/8" MIN
UNIT FLOOR
TO ENCLOSURE
CEILING
51 7/16"
TO CENTERLINE
OF VENT CAP
37"
MIN
48 1/4" MIN OPENING WIDTH
8 3/16 TO VENT
PIPE CENTER
19 1/2 MIN
DEPTH
19 1/2 MIN
FRAMING DEPTH
48 1/4 MIN ROUGH
FRAMING WIDTH
SHEATHING +
FINISH MATERIAL
3" MIN
16" TO GUIDE EDGE
84
59 7/16
21 5/8
59 7/16
42
21 5/8
6

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MANTEL CLEARANCES
Mantel Clearances for this fireplace may be measured from the top of the convection air opening or the floor level of this
fireplace.
The location that is referenced normally to measure mantel clearances is the Top of the Convection Air Opening. For ease,
however, measure up from the floor level of this fireplace. The chart and diagram, in this page, provide all the reference
dimensional information necessary in determining the distance a combustible mantel may protrude out from the face surface
of this fireplace. The Chart, at right, shows the Distance from Fireplace Face the combustible mantel may protrude outward
at a Distance up From Floor Level of this Fireplace.
If you prefer to take measurements from the top of the convection air opening, note that the top of the convection air opening
is 23 inches up from the floor level of this fireplace.
WARNING: Make proper use of this chart. Do not compromise the specifications contained in this chart.
Failure to adhere to proper clearances required to combustibles may cause spontaneous combustion of the mantel and
may result in a fire causing property damage, personal injury or loss of life.
NON-COMBUSTIBLE MATERIALS ONLY
ON HATCH AREA
2 7/16
12 1/2
39
MANTEL
35 1/16
8
8
4
12
NON
COMBUSTIBLE
FIREPLACE FACE MUST BE
COVERED W/
NONCOMBUSTIBLE FACING
IN THIS AREA.
HEIGHT ABOVE CONVECTION
AIR OPENING
DISTANCE FROM
FIREPLACE FACE
APPROVED MANTEL PROFILE
0
0
5
4
1
2
3
6
7
8
9
10
11
12
4
5
8
7
6

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CLEARANCES TO COMBUSTIBLES FROM APPLIANCE SURFACES
CLEARANCE TO SIDE WALL PROJECTIONS
Any side wall adjacent to Left or Right side of this appliance protruding out more 16" in from of the front surface of the visi-
ble glass door and if perpendicular to the front surface of the glass door must be located a minimum of 16" from the side
edge of the visible glass door.
1/2" CLEARANCE
FROM BACK
0" CLEARANCE FROM
TOP STANDOFFS
1/2" CLEARANCE
FROM SIDES
16" MINIMUM TO SIDE WALL
FROM SIDE EDGE OF
VISIBLE GLASS
8 3/16 TO VENT
PIPE CENTER
19 1/2 MIN
DEPTH
48 1/4 MIN ROUGH
FRAMING WIDTH
16" TO GUIDE EDGE
PROJECTIONS WITHIN
HATCHED AREAS ARE
DEEMED SAFE!
16"

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PLANNING THE INSTALLATION
When planning on appliance installation, it is necessary to determine the following information before installing:
• Where the appliance is to be installed.
• The vent system configuration to be used.
• Gas supply piping.
• Electrical Wiring.
• Framing and finishing details.
• Hearth Protection Pad Requirements.
• Whether accessories such as a wall switch, remote control, and ceiling fan are desired.
Selecting Appliance Location
When selecting a location for your appliance, it is important to consider the required clearances to adjacent side walls.
WARNING
FIRE RISK- ODOR RISK
• Do NOT install this fireplace directly on carpeting, vinyl or any combustible material other than wood. Con-
struct chase to all clearance specifications in manual.
• Locate and install appliance to all clearance specifications in manual.
• ODOR RISK: DO NOT INSTALL ANY CEMENT BOARDS OF OTHER MATERIALS THAT CONTAIN
POLYMER BASED FIBERS OR OTHER POLYMER MATERIALS.
59 7/16"
21 5/8"
48 1/4"
ROUGH FRAMING WIDTH
19 1/2
84"
ROUGH FRAMING WIDTH
21 5/8"
48 1/4"
ROUGH FRAMING WIDTH
19 1/2" ROUGH FRAMING DEPTH
42"

85-03-00955 Page| 15
ROUGH FRAMING DIMENSIONS
The Rough Framing Dimensions must be main-
tained to allow this fireplace to slide into the fram-
ing cavity.
If the fireplace is to be recessed in a cavity deeper
than 19-1/2”, all framing and finishing materials
protruding past the front face of this fireplace
must be of the NON-COMBUSTIBLE variety.
Constructing the Appliance Chase
A chase is a vertical box-like structure built to enclose this fireplace and its vent system. Vertical vents that run on the
outside of a building may be, but are not required to be, installed inside a chase.
Construction of the chase may vary with the type of building. These instructions are not substitutes for the requirements of
local building codes. Local building codes MUST be adhered to.
Chases should be constructed in the manner of all outside walls of the home to prevent cold air drafting problems. The
chase should not break the outside building envelope in any manner.
Wall, ceiling, base plate and cantilever floor of the chase should be insulated. Vapor and air infiltration barriers should be
installed in the chase as per regional codes for the rest of the home. Additionally, in regions where cold air infiltration may
be an issue, the inside surfaces of the chase may be sheet rocked and taped for maximum air tightness.
To further prevent drafts, the fire stops should be caulked with high temperature caulk to seal the gaps. Gas line holes
and other openings should be caulked with high temp caulk or stuffed with un-faced insulation. If the appliance is being
installed on a cement slab, a layer of plywood may be placed underneath this fireplace to prevent conducting cold up into
the room.
Minimum Rough Framing Dimensions
DESCRIPTION
DIMENSION (INCHES)
A
Width
48-1/4
B
Height
37”
C
Depth
19-1/2” (19” Granite/Marble Facing)
D
Vent opening height
10-3/4”
E
Vent opening width
10-3/4”

85-03-00955 Page| 16
FRAMING DEPTH and FINISHING GUIDES
The general framing depth for this fireplace is 19-1/2 inches. See details about using the Adjustable Framing Bracket, below
for flexibility for framing depths.
For installing solid Granite or Marble slabs as fascia material, reduce the framing depth by ½” then install ½” thick drywall
on the framing studs so that the drywall is flush with the front face of this fireplace. Install the Granite or Marble slab so that
it adheres to the face of the fireplace and the drywall.
Adjustable Framing Brackets (Sides, Top and Bottom): Defined as Metal Brackets which are secured to the front outer
perimeter of the ML-39 body and have adjustable slots to move inward to reduce the rough framing depth by the thickness
of the Finishing Material base Substrate. To adjust, loosen securing screws and slide brackets backwards.
Inner Guide: Defined as the flat metal guides supplied with the ML-39 which are located at the outer perimeter of the
convection air gap around the glass frame. These act as temporary guides and are to be used to position the finishing
material’s edges adjacent to the top, sides and bottom convection air gap around the glass frame. Use the Inner Guide if
you installing only the Traditions or Willowbrook Front or if you wish to install the Grace Front on top of your final finishing
material that is less than 2.00 inches thick.
Outer Guide (not shown): Defined as the bent metal guides which are designed to be used as the inner edge of final
finishing material bordering the outer edge of the Grace Decorative Front. The Outer Guide should be used if you desire
the final finishing material thickness to be deeper than 2” thick or if you wish the Grace Decorative Front to be recessed
closer to the viewing glass surface.
Finishing Material base Substrate: Defined as any non-combustible materials (which are required in the non-combustible
materials only allowed zones of this fireplace) or drywall boards (normally used in combustible material allowed zones)
which is secured to the rough frame members and act as the inner substrate that the final finishing material is adhered to.
Final Finishing Material: Defined as any non-combustible finishing material such as polished granite or marble, ceramic
tiles, faux rock, brick or others.

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ADJUSTABLE FRAMING BRACKETS
The ML-39 model is factory equipped with Top, Sides and Bottom adjustable framing brackets. These parts can slide
backwards the thickness of the Finishing Material base substrate such as Durock, Hardibacker (in non-combustible
zones) or Drywall board (in combustible material allowed zones). The framing depth shall be reduced by the thickness of
the Finishing Material base.
What is the core purpose and end benefit of the adjustable/sliding Top, Sides and Bottom Framing Brackets?
Adjusting the adjustable Top, Sides and Bottom framing brackets backwards equal to the thickness of the Finishing Ma-
terial base Substrate results in only the thickness of the final finishing material protruding out from the face of the ML-39
unit. Doing this allows you to remove and discard the Inner Guides if installing tiles with metallic tile edging strips or if in-
stalling the Grace Front on top of the Final Finish Material. The Grace mounting brackets allow in/out adjustment for final
finish material thickness of up to 2 inches.
How is the Rough Framing Depth of ML-39 affected if you adjust the Outer Framing Brackets?
1. The nominal rough framing depth for the ML-39 is 19-1/2”. You may slide the Outer Framing Bracket backwards
to reduce the rough framing depth by the same amount. Example: If you slide the Outer Framing Brackets back-
wards ½”, then the required rough framing depth will be 19-½” – ½”= 19”.
What do these adjustable Outer Framing Brackets parts affect?
1. The adjustable outer edge metal parts eliminate the need for the Minimum 1” thick finishing material thickness.
2. If you reposition the Outer Adjustable Framing Brackets, you should remove and discard the Inner Guides. In-
stead, use metallic tile edging strips, available at home improvement stores in various shapes and colors. Never
use polymeric (plastic) tile edging strips.
FINISHING MATERIALS INSTALLATION
All finishing materials that surround this fireplace’s rectangle profile must extend out from the face surface of this fireplace
1 inch if the 19-1/2” framing depth is used and the Inner or Outer Finishing Guides are utlizied. A MAXIMUM THICKNESS
OF 2” OF FINISHING MATERIAL IS ALLOWED OVER THE FACE OF THE UNIT WHEN USING THE INNER GUIDES
AND INSTALLING A GRACE FRONT! If you wish to install finishing materials in thickness greater than 2” with the Grace
Front, use outer guides.
Tiles and Faux Rock
If installing Tiles or Faux Rock, first install a ½” thick (minimum) Cement Board (Hardibacker or Durock Brand) over the
face of the fireplace and framing members. Follow by applying ThinSet mortar (no polymer additives) using ¼” square
notched trowel on the cement board surface. Finally, install tile to reach a finish material depth of 1 inch.
WARNING OF ODOR RISK: Cement Boards used shall not contain any polymer based fibers or polymer materials. Thin-
Set mortar with polymer additives is not allowed. If in doubt, use RTV 500oF rated high temperature silicone to adhere tile,
granite or marble to the face of unit. Always apply the silicone in 1/8” wide beads in spline shape vertical lines only. Allow
at least 24 hours to for the silicone to cure before firing this fireplace.
Marble and Granite Slabs
If installing Marble or Granite slabs as fascia materials, specify that the inner edges that will be adjacent to the Glass Door
are polished. Rough Framing should be created at 19” depth with the front surface of this fireplace protruding out ½” from
the framing surface.
Install 1/2'” thick drywall on framing members so that its outer surface is flush with the front face of this fireplace. Attach
Marble or Granite slabs to face of unit and to drywall surface using adhesive that does not off gas when hot. Mendota rec-
ommends the use of Copper RTV Silicone as the adhesive applied in thin 1/8 beads of spline shapes. NEVER place large
globs of any adhesive or Copper RTV Silicone between two faces. Doing so will cause odor issue for long periods of time
after installation is completed.
In the area defined as “NONCOMBUSTIBLE ZONE”, only NONCOMBUSTIBLE MATERIALS ARE ALLOWED. DO NOT
INSTALL DRYWALL OVER THE NONCOMBUSTIBLE ZONE.
WARNING OF ODOR RISK
Cement Boards used shall NOT contain any polymer based fibers or polymer materials. ThinSet mortar used
shall not contain any polymer additives.

85-03-00955 Page| 18
DECORATIVE FRONTS INFORMATION:
Traditions Front Only:
The Traditions Front is approximately the overall size of the viewing glass frame. This Front mounts using steel barrel nuts
on the outer sides of the viewing glass frame. The bracket attached to the Traditions Frame allows you to pull the Traditions
outward in incremental steps up to 1”, maximum. The Traditions Front can be close to the glass frame or away from the
glass frame. This front comes with a screen and is a conforming safety barrier.
For the Traditions Front, use the inner guides or use your selection of Metallic tile edging.
Willowbrook Front Only:
The Willowbrook Front is, approximately, the overall size of the viewing glass frame. This Front mounts using steel barrel
nuts on the outer sides of the viewing glass frame. The bracket attached to the Willowbrook Frame allows you to pull the
Willowbrook outward in incremental steps up to 1”, maximum. This front comes with a screen and is a conforming safety
barrier.
For the Willowbrook Front, use the inner guides or use your selection of Metallic tile edging.
TRADITION
S
WILLOWBROOK
S

85-03-00955 Page| 19
Grace Front Only:
The Grace Front’s inner edges start outside the convection air gaps around the viewing glass frame. This Front is
mounted using steel spacers and screws on the outer sides of the convection air gap on the sides of the viewing glass
frame. The bracket attached to the Grace Frame allows you to pull the Grace outward in incremental steps up to 2”, maxi-
mum. The Grace Front can be mounted close to the steel face of this fireplace if the Outer Guides are used and are appli-
cable in the installation plan. Else, if Final Finishing material is desired behind the Grace Front, use the Inner Guides and
adjust the rough framing depth and the Outer Adjustable Framing Brackets. With Final Finishing Material mounted behind
the Grace by using the inner guides, the Grace can be mounted only as close as the Final Finishing Material thickness
allows. This front comes with a screen and is a conforming safety barrier.
Grace Front With a Traditions Front or Willowbrook Front Combination:
A Traditions or Willowbrook Front can be mounted along with a Grace Front. First determine the desired depth perspec-
tive. Do you want the Grace Front Face close to the Traditions Face or Willowbrook Face? Do you want the Final Finish-
ing Material behind the Grace Front or do you wish to use the Outside Guides which hold the Final Finishing Material
outside the outer perimeter of the Grace Front? When installing a Grace Front with a Traditions or Willowbrook Front the
screen of the Grace Front may be removed.
GRACE WITH
TRADITIONS
GRACE
ONLY

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SAFETY BARRIER
All decorative fronts that can be mounted on the ML39 Fireplace are certified Safety Barriers. If the Fireplace is installed
without a decorative front then the Safety Barrier part number AA-11-02117 must be installed on the Fireplace. The Safety
Barrier will mount on the glass frame of the fireplace. Follow the instruction manual with the Safety Barrier for installing the
Safety Barrier. Never operate the fireplace without a certified Safety Barrier installed on the fireplace. Only use Mendota
approved fronts with this fireplace.
NON-COMBUSTIBLE FINISHING MATERIALS REQUIREMENTS
WARNING: The cross hatched areas labeled as “NONCOMBUSTIBLE ZONE” must be covered with noncombustible fin-
ishing materials that is 1-inch thick, minimum unless Adjustable Framing Brackets are utilized. (See section on Adjustable
Framing Brackets for more information.) DO NOT ALLOW COMBUSTIBLE MATERIALS TO ENCROACH IN THIS
AREA!