Mendota DT3-PF2-LX, DXV-45 DT4 - LX Instructions Manual

WARNING

CAUTION: Keep gasoline and other liquids having flam-

WARNING

AVERTISSEMENT. Quiconque ne respecte pas à la lettre

N’utilisez pas cet appareil s’il a été plongé dans l’eau,

AVERTISSEMENT : Une installation, un réglage, une modifi-

WARNING: Improper installation, adjustment, alteration,

GAS DIRECT VENT FIREPLACE

with Premium Fiber Log Set Combustion System

Model DXV-45 DT3-PF2- LX

INSTALLATION & OPERATING INSTRUCTIONS

NO. DXV45-DT3-LX-PF2-0113

If you do not follow these instructions exactly, a fire or
explosion may result causing property damage, personal
injury or loss of life.

mable vapors away.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any

phone in your building.

• Immediately call your gas supplier from a neighbor's

phone. Follow the gas supplier’s instructions.

• If you cannot reach your gas supplier, call the fire

department.

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.

les instructions dans la présente notice risque de dé­clencher un incendie ou une explosion entraînant des
dommages, des blessures ou la mort.

ATTENTION. Garder l’essence ou autres liquides produi­sant des vapeurs inflammables loin del’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 bâtiment.

• Appelez immédiatement votre fournisseur de gaz

depuis un voisin. Suivez les instructions du
fournisseur.

• Si vous ne pouvez rejoindre le fournisseur, appelez

le service des incendies.

même partiellement. Faites inspecter l’appareil par un
technicien qualifiéet remplacez toute partie du système
de contrôle et toute commande qui ont été plongés dans
l’eau.

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.

cation, une réparation ou un entretien mal effectué peut cau­ser des dommages matériels ou des blessures. Voir la notice
de l'utilisateur quiaccompgne l’appareil. Pour de l’aide oueds
renseignements supplémentaires, consultez un installateur,
un technicien agréé ou le fournisseur de gaz.

Installer l'appareil selon les codes ou règlements

Fuel Gas Code ou CAN/CGA-B149 en vigueur.

Cet appareil doit être utilisé uniquement avec le

This appliance must be installed in accordance

Propane Installation Code, CSA B149.1

This appliance is only for use with the type(s) of

CAUTION

improper and dangerous operation.

Attention. Au moment de l’entretiennes com-

FOR YOUR SAFETY READ BEFORE LIGHTING

WARNING
Do not operate this appliance with the glass re­moved, cracked or broken. A licensed or quali­fied person should do replacement of glass.

with local codes, if any; if none, follow the Nation­al Fuel Gas Code, ANSI Z223.1, or Canadian
Installation Codes, CAN/CGA-B149. Gas and

gas indicated on the rating plate and may be in­stalled in an aftermarket, permanently located,
manufactured home (USA only) or mobile home,
where not prohibited by local codes. See owner's
manual for details. This appliance is supplied with
a conversion kit.

Caution: Label all wires prior to disconnection
when servicing controls. Wiring errors can cause

Attention. Ne pas utiliser l’appareil si le panneau
frontal en verre n’est pas enplace, est craqué ou
brisé. Confiez leremplacement du panneau à
untechnicien agréé.

locaux, ou, en l'absence dételés règlements, se­lon les codes d'installation ANSI Z223.1, National

type de gaz indiqué sur la plaque signalétique.
Cet appareil peut être installé dans une maison
préfabriquée ou mobile (É.-U. seulement) instal­lée à demeure si les règlements locaux le per­mettent. Voir la notice de l'utilisateur pour plus de
renseignements. Cet appareil ne peut pas être
utilisé avecd'autres gaz sauf si une trousse de­conversion certifiée est fournie.

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.

THESE INSTRUCTIONS ARE TO REMAIN
WITH THE HOMEOWNER.

mandes, étiquetez tous les fil savant de les dé­brancher. Des erreurs decâblage peuvent
entraîner unfonctionnement inadéquat
etdangereux.

1

DXV45 DT3 FEATURES - QUICK REFERENCE INFORMATI ON

EXTERNAL DIMENSIONS: 40-3/8” Wide X 39” High X 19-1/8” Deep
MINIMUM FRAMING DIMENSIONS: 41” WIDE x 38-1/8” HIGH X 20” DEEP
GLASS SIZE: NeoCeram Glass with non-reflective coating. Visible Glass measures 707.5 in

2

.

in

MANTEL ALLOWANCE: 8” Deep Mantel at 14” Above Top Convection Opening
VENT SYSTEM ALLOWANCE: Top Vent Only. 0” Vertical 24” max horizontal. 55 feet Vertical Maximum. 5” exhaust and

8” combustion air intake coaxial vent pipe required. 12’ maximum horizontal run allowed with 4’ minimum vertical starter
section.

VENT DAMPER ADJUSTMENT AVAILABLE: There is one exhaust vent damper included in this unit and located in the
top convection chamber at the center.

CONTROLS: IPI Electronic Ignition System with AC Primary Power and DC Backup Power. Accent light and Blowers op­erate on AC Power only. Thermostatic Remote Control Transmitter with Smart Thermostat Mode.

BLOWER SYSTEM: 210 CFM Dual Blower System. 120VAC, 2Amps. Dedicated Hot Power only. No switches, Fan Speed
Controls or Light Dimmers are allowed in same circuit. Blower speeds can be varied from Remote Control. Fan cannot be
turned completely off.

Accent Light System: Accent Light System Included. Light can be turned on or off or dimmed using dimmer mounted
behind lower grill. Accent Light can also be turned on or off and dimmed using Remote Control Transmitter.

2

. Actual Glass size is 840

BURNER SYSTEM: Dual 304 Stainless Steel Tubular burners.
BURNER AIR SHUTTER SYSTEMS: Externally controllable Rear Burner air shutter and Internal rotary Front Burner air

shutter.

LOG SET: 10-piece, Premium Fiber Log Set with Real- Glow effects and Real ember bed.
REFRACTORY PANELS: High Detail Red Clinker Soldier Course Fiber Brick Panels included. Brick Panels required for

operation.
NATURAL GAS INFORMATION: Factory equipped for Natural Gas. 4.5”WC Minimum inlet pressure required. For NG

applications, Front Burner Orifice Size is #44 and the Rear Burner Orifice Size is #38.
LPG INFORMATION: An LP conversion kit is required to burn LPG in this appliance. Use kit #HA-42-00302 to convert

this appliance to burn LPG. 12”WC Minimum inlet pressure required. For the DXV45 DT3 LPG application, Front and

Rear orifices are to be #53 (Rear) and 3/64” (Front). For higher altitude, adjustment to orifice size may be necessary.

INITIAL STARTUP ADVICE

PAINT CURING CYCLE RECOMMENDATION: It is recommended that you run this Fireplace on maximum flame height,

for 3 cycles of 2 hours ON and 2 hours OFF, initially, to cure the paint. Some non-toxic smoking will be visible during the
cure cycles. It is recommended that all windows be opened during the first 2-hour burn cycle to expel the visible smoke.

BLOWER BREAK-IN PERIOD: The integrated blowers in this Insert may exhibit some bearing noise and electrical static
noise during the first few days of operation. This is normal during the break-in period. It is recommended that following the
Paint Curing Cycle, the blowers be run at their maximum speed for two 3-hour periods. The burner flames must be on dur­ing these cycles. The blowers in a few fireplaces may take longer to break-in and may require additional operation time
before all extraneous noise is eliminated. Please allow adequate operational time for the blowers to break-in before you
contact your dealer for service.

2

Contents

FOR YOUR SAFETY READ BEFORE LIGHTING 1
DXV45 DT3 FEATURES - QUICK REFERENCE INFORMATION 2
INITIAL STARTUP ADVICE 2
CONTENTS 3
SPECIFICATIONS 4
BUILDING PERMIT AND INSTALLATION INSPECTION APPROVAL REQUIREMENTS 4
LOCATING THE FIREPLACE AND GENERAL INFORMATION 6
HEATING PERFORMANCE 7
ELECTRICAL REQUIREMENTS: 7
DXV-45 GAS DIRECT VENT FIREPLACE 8
INSTALLATION INSTRUCTIONS 9
GAS SUPPLY REQUIREMENTS 11
GAS PRESSURE REQUIREMENTS 12
EXTERIOR VENT LOCATIONS AND RESTRICTIONS 13
FLUE VENTING INSTRUCTIONS 14
FLUE VENTING REQUIREMENTS FOR NG AND LPG 15
MENDOTA DESIGNER FRONTS INSTALLATION INFORMATION 22
DOOR REMOVAL AND REPLACEMENT 24
GLASS FRAME ASSEMBLY REPAIR AND REPLACEMENT 25
TO REPLACE DAMAGED GLASS 25
DXV45 COAL BED AND LOGS INSTALLATION 26
COMPLETED LOGS AND COAL BED ASSEMBLY EVALUATION 32
INSTALLATION CHECK OFF LIST 33
LIGHTING CHECK OFF LIST 33
BEFORE YOU BEGIN 34
REMOTE TRANSMITTER OPERATING INSTRUCTIONS 35
INITIALIZING THE REMOTE CONTROL SYSTEM 37
IPI/STANDING PILOT SYSTEM INFORMATION 38
BACKUP BATTERIES 39
OPERATING DURING POWER OUTAGES 39
BLOWER OPERATION AND WIRING 40
TROUBLESHOOTING MENDOTA GAS DXV FIREPLACE 41
CUSTOMER INFORMATION AND TROUBLE-SHOOTING 42
MAINTENANCE 43
WIRING SCHEMATICS 44
NATURAL TO LP GAS CONVERSION INSTRUCTIONS 45
INSTALLING THE LP PRESSURE REGULATOR 48
LP GAS PRESSURE REQUIREMENTS 49
CHECKING FOR NORMAL BURNER(S) IGNITION CHARACTERISTICS 49
REPLACEMENT PARTS 50
LISTING LABEL, RATING PLATE REPSENTATION 51
MENDOTA WARRANTY QUALIFICATION & SERVICE REFERENCE FORM 53
MENDOTA EXTENDED PROTECTION AND LIMITED WARRANTY 55

3

HIGH ALTITUDE INSTALLATION INFORMATION

SPECIFICATIONS

MENDOTA, MODEL DXV-45

High Fire - Adjustable to - Low Fire

BTUH. (MODEL DXV-45) NAT. GAS 45,000 7,500
BTUH. (MODEL DXV-45) L.P. GAS 40,000 5,000

NOTE: LP CONVERSION KIT #HA-42-00225 OR AA-11-01257 MUST BE PURCHASED SEPARATELY FOR THE DXV­45 FIREPLACE TO BURN LPG.

MAIN ORIFICE: REAR BURNER #38 NAT. GAS-#53 L.P. GAS – FRONT BURNER #44 NAT. - #3/64 LP
OVERALL EFFICIENCY EXCEEDS D.O.E. EFFICIENCY REQUIREMENTS (A.F.U.E.) FOR DIRECT VENT

WALL HEATERS

CO-AXIAL DIRECT VENT FLUE 5" INNER, 8" OUTER
TOTAL WEIGHT 205 POUNDS
SAFETY AGA CERTIFIED IPI PILOT SAFETY SYSTEM, ACTIVATED WITH SWITCH, THERMOSTAT

OR REMOTE CONTROL.

GAS REQUIREMENTS SUPPLY PRESSURE: GAS INLET: 3/8" N.P.T.

NAT. GAS: 7" W.C. (5" W.C. MIN., 11" W.C. MAX.)
L.P. GAS: 12.0" W.C. (12" W.C. MIN., 14" W.C. MAX.)
ELECTRICAL REQUIREMENTS 120 VOLT ON LEFT OR RIGHT SIDE OF APPLIANCE. CONNECT TO ONLY

ONE OF THE TWO SERVICE OUTLET BOXES INSTALLED IN THIS APPLIANCE. USE EITHER RIGHT SIDE OR LEFT
SIDE SERVICE OUTLET BOX CONNECTION.

APPROVED VENT SYSTEMS: AMERIVENT, DURAVENT, SELKIRK METALBESTOS, SECURITY CHIMNEY
Certified under ANSI Z21.88-2005•CSA 2-33-2005 and CAN/CGA 2.17 M91. DXV-45 is also deemed in compliance with

ANSI Z21.50•CSA 2.22 2000“Vented Gas Fireplace Heaters" 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 recreational vehicles."
“Gas-fired appliances for use at high altitudes.”

: Prior to installing at altitudes higher than 7500, please con-

tact the Mendota technical service department for specific venting requirements and venting restrictions.

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 or der t o 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

4

CONGRATULATIONS!

You are the owner of a world class, heat producing, 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.
The Mendota Gas Fireplace is a true heating appliance incorporating the traditional aesthetics of fireplace fire viewing with

the controllability and fuel efficiency of a home gas furnace. Of particular interest is the low fuel consumption and brilliant
fire viewing afforded by the realistic, Deep Timber, wood fire-like 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.....

FOR YOUR SAFETY do not install or operate your Mendota Gas Fireplace without first reading and understanding this
manual. Any installation or operational deviation from this manual voids the Mendota Gas Fireplace Warranty and may
prove hazardous!

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.
The Mendota Gas Fireplace is a powerful, efficient heating unit. It has been designed as a major source of supplemental

heat. As with any mechanical appliance there can be component shut downs. It is advisable to have an alternate heat
supply.

Installation, repair and any adjustments to logs or burner must be done by a qualified service person. The Fireplace
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 Fireplace 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.

5

LOCATING THE FIREPLACE AND GENERAL INFORMATION

Your Mendota Gas Fireplace has a state-of-the-art co-axial direct vent, sealed combustion system. This advanced, highly
efficient system brings in outside air for combustion, has a separate exhaust vent and efficiently heats and re-circulates
room air. The Mendota system maintains high air quality, maximizes efficiency and assures proper operation.

SAFETY AND STRUCTURAL CONCERNS:

The DXV Fireplace must be installed and serviced by a Mendota approved service person. Any adjustments to burner,
pilot, logs or coal bed must be made by a Mendota approved service person. Pilot flame must be checked with voltmeter.
Pilot flame must register a minimum of 250 on mill volt meter. If pilot goes out always wait five (5) minutes before relight­ing pilot. Always remove the glass door when lighting the pilot. The burner must light immediately & the flame must travel
promptly and smoothly around "curve" and light entire burner. The flame must not "lift off" burner. All vent pipe sections
must be "twist locked" and leak proof.

The Mendota Direct Vent Fireplace may be placed within inches of adjacent sidewalls. (See FIGURE 1 on pg. 8). The
fireplace may be placed directly on concrete or wood flooring. If the appliance is to be installed on carpeting, vinyl or other
combustible material other than wood flooring, the appliance shall be installed on a metal or wood panel extending the full
width and depth of the appliance. Combustible mantels must be installed as per FIGURE 1 on pg. 4. Non-combustible
(marble, brick, stone, etc.) mantels or mantels with steel protector plate on underside maybe installed at any desired height
above upper grill.

NEVER BLOCK OFF UPPER OR LOWER GRILLS. ALWAYS USE MENDOTA GRILLS, MENDOTA APPROVED VENT
SYSTEMS AND MENDOTA APPROVED VENT CAPS. SEE PAGEA 8-15 FOR SPECIFIC VENTING INFORMATION.

KEEP ELECTRONIC APPLIANCES AWAY: DUE TO THE HIGH TEMPERATURES IN THE VICINITY OF THIS
FIREPLACE, MENDOTA RECOMMENDS THAT ALL ELECTRONIC APPLIANCES INCLUDING AUDI O/VIDEO
APPLIANCES AND THEIR RECORDING MEDIA (ie. TV, VCR, DVD PLAYER, CD PLAYER, TUNERS, TELEPHONES,
CASSETTE TAPES, VIDEO TAPES, CDs, DVD CDs) BE KEPT WELL AWAY FROM THIS FIREPLACE.

VENTING REQUIREMENTS:
Use only Mendota specified vents and vent caps when installing your fireplace. Closely follow venting locations, directions

and requirements (see pages 10-17). Observe the restrictions relating to vent position on exterior of home (see pg. 10).

6

HEATING PERFORMANCE

Mendota Gas Built-in Fireplaces are true, high efficiency gas heaters. With its high heat output the Mendota Fireplace will
heat a large area of your home if situated to maximize heat circulation. Air movement options for maximizing heat circula­tion which can be considered are through-the-wall grills or floor grills, the continuous operation of central heating furnace
blowers, or ceiling fan. The most efficient method for overall heat distribution is a ceiling fan. The heat output of the
Fireplace can be reduced down to 22,500 BTUH by slowly turning the Hi/Lo temperature knob on the gas valve counter
clockwise from "Hi" to "Lo". Further reduction of heat output, down to 7,500 BTUH, can be achieved by turning off the rear
burner using the switch provided behind the lower grill. The blower can also be turned down to reduce heat output.

AESTHETIC CONSIDERATIONS:
Burning or static fireplaces are a major aesthetic focus in any room. Locate your gas fireplace as you would a television

set. The Mendota Hearth Gas Fireplace will be a continuing source of comfort and fascination. Corner installations will
afford you the greatest potential for viewing in many rooms.

HEARTH PROTECTION REQUIREMENTS: A non-combustible hearth protector is required and must extend a minimum
of 14" in front of the fireplace (see Figure 1 on pg. 4 for raised hearths). We suggest installing the Mendota Fireplace 6 to
12 inches above the floor by utilizing an elevated hearth.

CAUTION: If you intend to install either the Andover Door Front or the Prairie Door Front on this fireplace, make certain
that the top surface of the hearth protector is flush with the bottom surface of the fireplace, no higher. Failure to follow this
guideline will prevent proper mounting and function of these two Fronts. See Page 16 for specific details.

ELECTRICAL REQUIREMENTS:

A blower kit is supplied as standard equipment on your Mendota Direct Vent Fireplace; A 120 volt electrical service must
be supplied at the fireplace location at the time of installation. It must be electrically grounded in accordance with local
codes or in their absence with current edition of the National Electric Code ANSI/NFPA 70. Power supply to blower must
be continuous. DO NOT use a switch or variable control in power supplied to fireplace. Connect this 120 VAC supply line
to e left side. CONNECT 120 VAC TO ONLY THE JUNCTION BOX INSTALLED ON THE LEFT SIDE OF THIS
APPLIANCE.

The blower kit in this appliance is equipped with a three-prong plug for protection against shock hazard and should be
plugged directly into the grounded three-prong receptacle provided with the fireplace. Do not cut or remove the ground-

ing prong from the plug.
NOTE: The blower output can be adjusted with the remote control transmitter. There will be delays in blower operation

during "heat-up" (approx. ½ hr.) and extended blower operation during "cool-down" (approx. ½ hr.) of unit .
Wall Thermostats are NOT recommended for this appliance. A Thermostatic Remote Transmitter is supplied with this

appliance. Consult your dealer or the Mendota Service Department if you wish otherwise.

7

HIGH ALTITUDE INSTALLATION INFORMATION: Prior to installing at altitudes higher than 7500, please con-

51 7/16

51 7/16

DXV-45 GAS DIRECT VENT FIREPLACE

SPECIFICATIONS & CLEARANCES

DIRECT VENT COAXIAL PIPE SIZE: 5" I.D. X 8" O.D.

FIGURE 1: Specifications & Clearances

tact the Mendota technical service department for specific venting requirements and venting restrictions.

8

INSTALLATION INSTRUCTIONS

CAUTION: Each installation must conform to all local, state and national codes. Refer to the national fuel gas code and

local zoning and code authorities for details on installation requirements. The Mendota Fireplace must be vented to the
outside in accordance with the latest edition of the National Fuel Gas Code. In the absence of local codes, the installation
must conform to the most current edition of the National Fuel Gas Code ANSI Z223.1, also known as NFPA 54. NOTE:
The Mendota DXV Fireplace is approved for mobile home and bedroom installations.

CAUTION: The Mendota DXV Fireplace may be installed in a manufactured (mobile) homes after the first sale of the
home. Manufactured home (mobile home) installation must conform with the Manufactured Home Construction and Safe­ty Standard, Title 24 CFR, Part 3280, or, when such a standard is not applicable, the Standard for Manufactured Home
Installations, ANSI A225.1/NFPA 501A, or CSA Z240.4-Gas Equipped Mobile Housing. Consult your local building official.
Note: For mobile home installations unit must be bolted to the floor and properly grounded.

1. After selection of the desired fireplace location, prepare the rough opening using framing dimensions on page 4.
Prepare opening to allow for co-axial vent (see "Flue Venting Instructions" on pgs. 13-21).

2. Check to make certain all venting requirements and locations are being followed. (See pg 13 -21).

3. The Fireplace is designed to be installed into rough framing. The drywall will cover the adjustable nailing flanges
on the Fireplace sides. Before sliding the Fireplace into the framed opening, adjust the nailing flanges to accom­modate the thickness of the wall material. NOTE: FRAMING MATERIAL ABOVE FIREPLACE MUST MAINTAIN
CORRECT CLEARANCES TO VENT PIPE.

4. Slide Fireplace into the rough fram ed opening. When finishing the unit, combustible materials may
overlay nailing flanges and com e in contact with the side edges of the black front surface, but may
not overlay the 2" black surface. A 40-1/8” x 4” T op Screw Strip (par t #HA-41-00015) is supplied with
the fireplace and must be installed on the top of this fireplace. The Top Screw Strip provides a 4”
clearance to combustible materials at the t op of the fireplace. See Pag e 8 for specific details.

5. Combustible wall covering materials may only be installed down to the top flat edge of the Top Screw
Strip. Noncombustible boards such as “Dura-Rock” or “ wonder board” can be installed on top of t he
face of the Top Screw Str ip and on top of the r est of the black face of the fireplace. Noncombustible
material, such as m arble or br ick , can be installed over the 2" black surf ace up t o the inside edges of
black frame only if some Designer Fr onts are to be installed. See Page 23 for spec ific details and
exceptions. Rough framing can com e no closer t o unit than the stand-offs.

6. Level the Fireplace and secure into opening by nailing throug h the nailing flanges on cabinet side
panels. Holes are provided in fireplace floor behind grill to lag screw fireplace to floor, if required.
NOTE: A removable panel in the enclosure for f uture visual inspection of the flue connection is
recommended

7. Have an electrician install a 120 Volt supply to the junction box on lower left side of the fireplace cabinet. Connect
wires to the duplex outlet. This duplex outlet is removable from outside of cabinet for easy wiring. Make sure the
outlet is properly grounded and that the installation conforms to all local and national wiring codes. See "Blower
Operation" below, Blower Wiring Diagram and "Electrical Requirements".

8. Have gas supplier or qualified plumber install gas supply line to fir eplace and connect to gas nipple.
Be sure gas and plumbing instructions and all local and national codes are c arefully followed. Care­fully check for gas leak s and for proper gas pressure.

IMPORTANT: Any safety screen, guard, glass, grill, pressure relief cap, etc. removed for servicing a fireplace/room
heater must be replaced prior to operating the fireplace/room heater.

BLOWER OPERATION

The Mendota DXV Fireplace is designed so the blower operates continually when main burner is on. The blower output
can be regulated with the Remote Control Transmitter but the blowers cannot be turned off when this fireplace is hot.
NOTE: There will be a time delay in blower operation during "heat-up" (approx. 10 min.) and extended blower operation
during "cool-down" of unit. (Approx. 1/2 hour).

OPERATION DURING POWER OUTAGES: This fireplace is designed to operate for a maximum 1-1/2 continuous
hours during power outages on HIGH FIRE. The blower will not operate, but natural convection can be improved by re­moving the upper Millennia grills, opening the Andover and Prairie Doors and opening the Wellington Screens. If burned
on LOW FIRE (front burner only), this appliance may be run continuously indefinitely during power outages.

9

10

GAS SUPPLY REQUIREMENTS

Correct gas pressure and proper gas supply line sizing is imperative to the successful performance of your Mendota gas
fireplace. Be sure the gas supplier or plumber carefully checks for correct gas pressure and gas line sizing when installing
the fireplace.

It is critical to carefully check for gas leaks when hooking up the fireplace -- check with soap & water solution.
Be sure to install "approved" flex gas line with brass-to-brass fittings to prevent gas leaks at connections.
Gas supply piping must include a drip leg to eliminate the possibility of contaminants entering the gas train.

Adhere strictly to local and national codes for entire installation.

GAS SUPPLY LINE SIZING

The Mendota Gas Fireplace comes equipped with a 12” flexible connector kit including a manual shutoff ball valve. Gas
supply piping must enter the Fireplace cabinet from the right side.

The included manual shut-off valve meets Federal Codes. I required by local codes, install an additional manual shutoff
valve upstream of the fireplace’s manual shutoff valve. The appliance and its individual shut-off valve must be discon­nected from the gas supply piping system during any pressure testing of that system at test pressures in excess
(3.5 kPa).

The appliance must be isolated from the gas supply piping system by closing its individual manual shut-off valve during
any pressure testing of the gas supply piping system at test pressures equal to or less than

1/2 PSIG (3.5 kPa).

A proper gas line diameter must be selected to run from the supply regulator to the Fireplace. Refer to the following table
for proper gas pipe diameters. Strictly adhere to the correct pipe sizes. If in doubt, use the next larger size.

PIPE LENGTH

(FEET)

NAT. L.P. NAT. L.P.

0-10 1/2" (1.3 cm) 3/8" (1.0 cm) 1/2" (1.3 cm) 3/8" (1.0 cm)

10-40 1/2" (1.3 cm) 1/2" (1.3 cm) 5/8" (1.6 cm) 1/2" (1.3 cm)

40-100 1/2" (1.3 cm) 1/2" (1.3 cm) 3/4" (2.0 cm) 1/2" (1.3 cm)
100-150 3/4" (2.0 cm) 1/2" (1.3 cm) 7/8" (2.3 cm) 5/8" (1.6 cm)
150-200 3/4" (2.0 cm) 1/2" (1.3 cm) 7/8" (2.3 cm) 3/4" (2.0 cm)

SCHEDULE 40 PIPE

INSIDE DIA.

TUBING, TYPE L

OUTSIDE DIA.

of ½ PSIG

NOTE: Some areas all ow copper tubing or galvanized pipe - check wi t h l ocal approval agencies and codes. NEVER use plastic

GAS PRESSURE CHECKING REQUIREMENTS

Inlet and manifold gas pressure checking taps are located on gas valve (see Figure 2 on Page 10). A qualified installer
should use these fittings for setting the correct gas pressure during initial installation.

NOTE: DO NOT DAMAGE OR KINK THE FLEX CONNECTOR. CHECK FOR GAS LEAKS WITH SOAP AND WATER

SOLUTION.

NOTE: 3/8" FLEX OR RIGID PIPING MAY BE USED TO CONNECT GAS SUPPLY TO UNIT DEPENDING ON STATE

AND LOCAL CODES.

NOTE: BE SURE TO INSTALL FLEX GAS HOSE WITH BRASS-TO-BRASS FITTINGS TO PREVENT LEAKS AT

CONNECTION.

NOTE: THE HARD PLUMBING FITTING PROVIDED IS TO BE USED WITH INSTALLATIONS REQUIRING HARD

PLUMBING. IT MAY BE REMOVED IF THE FIREPLACE IS BEING INSTALLED WITH A FLEXIBLE
CONNECTOR.

11

pipe.

GAS PRESSURE REQUIREMENTS

A MAJOR CAUSE OF OPERATING PROBLEMS WITH GAS APPLIANCES CAN BE IMPROPER GAS PRESSURE!

Problems such as changes in flame color or flame height, pilot or burner out ages, intermittent operation,
changes in heat output, excessive burner noise, etc. are nearly always the result of changes in gas pressure
or improper gas pressure at t he time of the installation. The m ost important item to check dur ing the installa­tion and the first thing t o chec k when problems occur is gas pressure!

Gas supplies normally enter a residence at 1/2 PSI (13" - 15" W. C. ) ( 3. KPA). A regulator is then placed in­side the residence, which drops this pressure to 7" W.C. (1.8 KPA) ( Nat . Gas). This "inches to inches" regula­tor is of adequate capacity to ser vice the g as appliances (s uch as dr yer, furnace, etc.). I f this regulator's
capacity is not sufficient to add the G as Fireplace, an additional "inches to inches" regulator must be installed
for the Fireplace. EXCEPTIO N: Som e c odes allow 2-PSI (1. 4KPA) supplies t o ent er the residence, in which
case "pounds to inches" regulators ar e used.

The following table provides information on correc t gas pressure requirements . Be sur e your gas supplier or
plumber carefully follows this table.

GAS PRESSURE REQUIREMENTS

DESIRED

INLET

PRESSURE

MINIMUM

INLET

PRESSURE

MAXIMUM

INLET

PRESSURE

MANIFOLD

OUTLET

PRESSURE

AIR SHUTTER

POSITION*

NATURAL GAS 7.0" W.C.

(1.75 kPa)

L.P. GAS 12.0" W.C.

(3.00 kPa)

TURN GAS VALVE KNOB TO "HIGH" POSITION. GAS PRESSURES MAY VARY PLUS OR MINUS 5%.

NOTE: For High Altitude (Above 5.000 Feet) Some Variations In Air Shutter Settings May Be Required.
Manifold pressure must be tak en at the Output Pressure tap and inlet pressure at the I nlet Pressure tap with the burner

operating by a qualified installer (see

Figure 2: Gas Pressure Test Port).

5.0" W.C.

(1.12 kPa)

11" W.C.

(2.75 kPa)

Figure 2: Gas Pressure Test Ports

11" W.C.

(2.61 kPa)

13.0" W.C.
(3.24 kPa)

3.5" W.C.

(0.87 kPa)

10.0" W.C.
(2.5 kPa)

1/16 - 3/16 "

OPEN

1/4" OPEN-MIN.

12

-

-

-

A =

Clearance above grade, veranda, porch,
mum). Vinyl surfaces require 24” min.

H =

*Not to be installed above a meter/regulator as­the center-line of the regulator

B =

Clearance to window or door that may be
(*12 inches (30 cm) minimum.

I =

Clearance to service regulator vent outlet (*6
*12 inches (30 cm) minimum.

D =

Vertical clearance to ventilated soffit located

surfaces require 24” min.

K =

Clearance to a mechanical air supply inlet (*6
E =

Clearance to unventilated soffit (18 inches (46

L =

† Clearance above paved side-walk or a paved
F =

Clearance to outside corner - 6 inches (15
cm).

M =

Clearance under veranda, porch, deck, or bal­cony (*18 inches (30 cm) minimum ‡)

G =

Clearance to inside corner - 12 inches (30

N=

Minimum 24” horizontal clearance to any sur­terminations.

EXTERIOR VENT LOCATIONS AND RESTRICTIONS

Figure 3: Exterior Vent Locations

NOTE: ALL MEASUREMENTS TO BE TAKEN FROM CENTER LINE OF VENT CAP

∨

Vent Terminal ∧

deck, or balcony (*12 inches (30 cm) mini-

opened

C = Clearance to permanently closed window

(minimum 12 inches (30 cm) recommended
to prevent condensation on window)

above the terminal from the center-line of the
terminal (12 inches (30 cm) minimum) Vinyl

cm) minimum) Vinyl surfaces require 24” min.

Air Supply Inlet ≡

sembly within 3 feet (90 cm) horizontally from

feet (1.8m) minimum)
Clearance to non-mechanical air supply inlet to

J =

building or the combustion air inlet to any other
appliance.

feet (1.8 m) minimum)

driveway located on public property (*7 feet (2.1
m) minimum)

Area where terminal is not permitted

cm). Vinyl surfaces require 24” min.

† A vent shall not terminate directly above a sidewalk or paved driveway, which is located between two single-family
dwellings and serves both dwellings.
‡ Only permitted if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
* As specified in CGA B1:19 Installation Codes (1991). Note: Local codes or regulations may require different

clearances.

13

face, such as an exterior surface, for vertical

HIGH ALTITUDE INSTALLATION INFORMATION: Prior to installing at altitudes higher than 7500, please con-

FLUE VENTING INSTRUCTIONS

The Mendota Fireplace must be vented using DuraVent or Amerivent or Security venting system. All warranties will be
voided and serious fire, health or other safety hazards may result from any of the following actions: Installation by unau­thorized personnel; Installation of any damaged component; unauthorized modification of vent system; installation of any
components not manufactured or approved by security chimney Simpson DuraVent, Amerivent and Mendota; failure to
meet all clearance requirements; failure to properly twist-lock all components.

Consult local building codes before beginning the installation.

tact the Mendota technical service department for specific venting requirements and venting restrictions.

WARNING

Always maintain required clearances (air spaces) to combustibles to prevent a fire hazard. Do not fill air spaces with insu­lation. Check installation instructions for minimum clearance requirements between the outer walls of the vent pipe and
nearby combustible surfaces. Be sure to check the vent termination clearance requirements from decks, windows, soffits,
gas regulators, air supply inlets, and public walkways, as specified in these installation instructions and local building
codes. SAFETY PRECAUTIONS FOR THE INSTALLER: 1) Wear gloves and safety glasses for protection; 2) Exercise
extreme caution when using ladders or on roof tops; and 3) Be aware of electrical wiring locations in walls and ceilings.

The gas appliance and vent system must be vented directly to the outside of the building, and never attached to a chimney
serving separate solid fuel or gas burner appliance. Each direct vent gas appliance must have its own separate vent sys­tem. Common vent systems are prohibited.

To assure proper venting performance of the high-performance Mendota Direct Vent Fireplaces and Stoves, it is critical
that the DuraVent GS vent pipe sections are sealed tightly and leak-proof. This means that all pipe sections must be care­fully rotated into the fully "twist-locked" position (Dura Vent only).

WE STRONGLY RECOMMEND THAT FIXED LENGTH PIPE SECTIONS BE USED IN PLACE OF TELESCOPING
SECTIONS WHENEVER POSSIBLE

Note: When using Dura-vent DV pipe you must use a silicate stove masonry sealant [Millpak Sealant #65-06-00909] on all
inner pipe joints. On the exterior (air intake) pipe joints, high temperature foil tape may be used instead of the masonry
sealant. Contact your dealer to obtain this sealant material.

DO NOT SEPARATE TELESCOPING SECTIONS. THEY MUST BE USED AS COMPLETE ASSEMBLIES.

COMPONENT "TWIST-LOCK" CONNECTION PROCEDURE

DuraVent, Amerivent and Security brand pipe and fittings are designed with special
twist-lock connections. Twist-lock procedure is as follows: four (4) indentations, lo­cated on the female ends of pipes and fittings are designed to slide straight in to the
male ends of the adjacent pipes and fittings, by orienting the four pipe identifications
so that they match and slide into the four entry slots on the male ends (FIGURE 4).
FIGURE 4: Twist-Lock Piping
Push the pipe sections completely together then twist-lock one section clockwise,
approximately 1/4 turn until the two sections are fully locked. The female locking
lugs will not be visible from the outside on the black pipe or fittings.

14

HIGH ALTITUDE INSTALLATION INFORMATION: Prior to installing at altitudes higher than 7500, please con-

FLUE VENTING REQUIREMENTS FOR NG AND LPG

NOTE: IF A 90º ELBOW IS CONNECTED DIRECTLY TO THE FLUE OULET, THE MAXIMUM HORIZONTAL
DISTANCE FROM THE FLUE OUTLET CENTERLINE TO THE OUTSIDE WALL IS 24".

A maximum of three (3) 90ºelbows are allowed per installation.
Each 90º elbow USED, after the first 90

USED, after the first 90

o

elbow, reduces the maximum horizontal distance by 1-1/2’.

o

elbow, reduces the maximum horizontal distance by 3'. Each 45o elbow

tact the Mendota technical service department for specific venting requirements and venting restrictions.

15

ITEM
#

PART #

DESCRIPTION
1

45-01-00222

12" VENT STACK 5" / 8"

1

45-01-00223

24" VENT STACK 5" / 8"

1

45-01-00224

36" VENT STACK 5" / 8"

1

45-01-00225

48" VENT STACK 5" / 8"

2

45-01-00228

90ºGALVANIZED ELBOW 5" / 8"

3

45-01-00227

45º GALVANIZED ELBOW 5" / 8"

4

45-01-00229

ADJUST. WALL THIMBLE 5" / 8"

5

45-01-00226

11 - 14" ADJUSTABLE PIPE 5" / 8"

9

45-01-00239

ATTIC INSULATION SHIELD 12" 5"/8"

10

45-01-00236

ROOF FLASHING (0/12 TO 6/12) 5"/ 8"

10

45-01-00237

ROOF FLASHING (7/12 TO 12/12)5"/8"

11

45-01-00238

STORM COLLAR 5" / 8"

12

45-01-00230

VERTICAL VENT CAP 5" / 8"

13

45-01-00234

SUPPORT BAND 5" / 8"

14

45-01-00231

HORIZONTAL VENT CAP 5" / 8"

15

45-01-00235

FIRESTOP SPACER 5" / 8"

16

45-01-00221

6" VENT STACK GALV. 5" / 8"

17

AA-11-00458

HEAT SHIELD (FOR VINYL, WOOD & COMBUSTIBLE
SIDING)

5"/ 8"FLUE VENTING COMPONENT S FOR NG AND LPG

16

HIGH ALTITUDE INSTALLATION INFORMATION: Prior to installing at altitudes higher than 7500, please con-

Adjustable– telescoping – pipe sections
must be sealed using 1000° MILLPAK
SILICATE STOVE MASONRY
SEALANT (part #65-06-00909).

tact the Mendota technical service department for specific venting requirements and venting restrictions.

17

HEAT SHIELD #AA-11-00458

Y

HEAT SHIELD

AA-11-00458

A-1 MINIMUM RISE THROUGH-THE-WALL VENTING FOR NG AND LPG

WARNING: ALWAYS USE HEAT SHIELD (#AA-11-00458) WHEN EXTERIOR WALL COVERING IS MADE OF VINYL,

WOOD OR OTHER COMBUSTIBLE MATERIALS. HEAT SHIELD (#AA-11-00458) IS INCLUDED WITH THE DXV45
FIREPLACE.

IMPORTANT: REFER TO DRAWINGS ON PAGE 12-14 WHILE FOLLOWING THESE INSTRUCTIONS.

o

The horizontal distance from flue outlet center to outside wall must not exceed 24" if a 90
flue outlet. ALWAYS MAINTAIN 1" CLEARANCES FROM VENT PIPE TO COMBUSTIBLES, 2" ABOVE PIPE ON
HORIZONTAL RUNS. Use "fixed" pipe sections in place of adjustable pipe sections wherever possible. If adjustable pipe
sections must be used, 1000

º Millpak sealant (#65-06-00909) must be used on the inner pipe joints (DuraVent Only). Do

not fill air spaces within the required clearance distances (1” around vertical pipe sections and 2” above horizontal pipes
and fittings) with insulation or other material.

elbow is connected directly to

Position fireplace in desired location. See pg.12 for guidelines on proper vent cap placement on the exterior of home.
Check to determine if wall studs are in the way when venting system is attached. If this is the case, you may want to ad­just the fireplace location.

Measure from the top of the fireplace up minimum 7 1/2" to centerline of 90

º elbow. (pg. 8) and mark wall directly at the

center of where the vent pipe will penetrate the wall.
Cut and frame a 10-3/4" x 10-3/4" opening in the outside wall. The hole must be positioned so the vent system will run

level or have a ¼ " rise AND be perpendicular to the wall. The height of the opening must be located to meet all local and
national building codes and not allow the termination to be easily blocked or obstructed. If wall being penetrated is non­combustible material, i.e. masonry block, brick, etc., an 8 ½" diameter hole is acceptable. A Wall Thimble (#45-01-00229)
must be used when penetrating a combustible wall.

Make sure that all component connections are in their fully twist-locked position and are leak-proof. Make sure that 1000

Millpak

sealant (#65-06-00909) is used on the inner pipe joints of all pipe sections (Dura Vent only).

*NOTE: DO NOT SEPARATE TELESCOPING SECTIONS. USE AS COMPLETE ASSEMBLIES.

The length of the horizontal piece that fits through the wall will be determined by the thickness of the wall. When installed,
the end of the horizontal piece must be flush with the exterior wall of the home. There MUST be a minimum of 1" air
space clearance to combustibles from all vent pieces (2" above horizontal runs).

From the exterior of the home, slide the horizontal vent cap over the end of the horizontal pipe and tightly secure the cap to
the wall with screws. Seal with a high quality caulking.

NOTE: The Horizontal Vent Cap should not be recessed into the wall or siding.

º

18

A-2 ELEVATED RISE THROUGH-THE-WALL VENTING FOR NG AND LPG

The minimum vertical rise from top of fireplace is 48 in. when used with the maximum horizontal run of 16 ft. For other
venting configurations within these maximum limits see pg. 15.

NOTE: All horizontal runs of vent pipes must have a ¼" rise for every 1' of run toward the termination. Never allow the
vent to run downward. This will cause high temperatures and the possibility of a fire.

USING OFFSETS AND RETURNS: A single 90º vertical-to-horizontal elbow is already calculated into the
allowable maximum 16' horizontal run. Each additional 90º elbow reduces the maximum horizontal distance by 3'. A max-

imum of two 90° or four 45° elbows, in addition to the first 90
in entire vent system. 45º elbows reduce the maximum horizontal distance by 1½ '.

SUPPORT: Horizontal runs of pipe will require one vent support for every 3 ft. of pipe.
CAUTION: Be sure to maintain 1" air space clearances to any combustibles around all pipe sections that are vertical. Be
sure to maintain 1” air space clearances to any combustibles on the sides and below all horizontal pipe sections and el­bows and 2" from the top of all horizontal pipes and fittings.

IMPORTANT: REFER TO DRAWINGS ON PAGE 15 & 16 WHILE FOLLOWING THESE INSTRUCTIONS.

o

elbow, can be used (total equivalent of three (3) 90o elbows

Position fireplace in desired location. See pg. Error! Bookmark not defined. For guidelines on proper vent cap place-
ment on exterior of home. Check to determine if wall studs are in the way when vent system is attached. If this is the case
you may need to adjust the fireplace location.

Locate position where vent pipe will pass through any ceilings and will penetrate the outside wall. Since vent pipe sections
"overlap" we suggest pre-assembling and measuring the total vent pipe run so you can more accurately locate the point
where the vent pipe will penetrate the outside wall. Be sure all vent components are properly twist locked and leak-proof.
Be sure 1000

*NOTE: DO NOT SEPARATE TELESCOPING SECTIONS USE AS COMPLETE ASSEMBLIES.

Cut and frame a 10-3/4" x 10-3/4" opening in the outside wall and in any ceiling openings. The outside wall hole must be
positioned so the vent system will have a ¼ " rise per foot of run AND be perpendicular to the wall. The height of the open­ing must be located to meet all local and national building codes and not allow the termination to be easily blocked or ob­structed. A ceiling fire stop spacer is required at any floor (ceiling) opening.

Connect a 90° elbow to the fireplace adapter on top of fireplace vent outlet.
Always use a Wall Thimble (#45-01-00229) when penetrating a combustible wall.
The horizontal pipe must end flush with the exterior wall of the home. Horizontal pipe will require a proper support (part

#45-01-00234) every 3 ft. of vent pipe. THERE MUST BE A MINIMUM OF 1" CLEARANCE TO COMBUSTIBLES FROM
ALL VENT PIECES (2" above horizontal runs). From the exterior of the home, slide the horizontal vent cap over the end of
the horizontal pipe and tightly secure the vent cap to the wall with screws. Seal with high quality caulking.

NOTE: Venting terminal should not be recessed into the w all or siding.

º silicate sealant (Millpak #65-06-00909) is used in the inner joints of all pipe sections (Dura Vent only).

19

B - 1 VERTICAL THROUGH-THE-ROOF VENTING FOR NG AND LPG

The maximum vertical run of vent pipe is 36 ft. from the top of the fireplace. The fireplace will support a run of a maximum
of 36 ft. Maintain 1" air space clearances on all sides of vents (2" above horizontal vents).

IMPORTANT: REFER TO DRAWING ON PAGE 10 & 11 WHILE FOLLOWING THESE INSTRUCTIONS.
Place the fireplace in its desired location. Drop a plumb bob from the ceiling to the center position of the fireplace flue exit.

Mark the location where the vent will penetrate the ceiling. Drill a small hole at this point. Next, drop a plumb bob from the
roof to the hole previously drilled in the ceiling. Mark and drill the spot where the vent will penetrate the roof. Determine if
ceiling joists, roof rafters or other framing will obstruct the venting system. You may need to relocate the fireplace or need
to offset, to avoid cutting load bearing members.

Cut and frame a 10-3/4" x 10-3/4" opening in the ceiling centered on the hole drilled in No. 1.
To determine the length of the vent pipe required, measure the distance from the fireplace flue outlet to the ceiling, the

ceiling thickness, and the vertical rise in the attic or second story and allow sufficient vent height above roofline. For two
story installations, fire stops are required at each floor level. If an offset is needed in the attic, additional pipe and elbows
will be required.

Assemble the desired lengths of vent pipe and elbows to reach from the fireplace flue outlet. Ensure that all pipe and el­bow connections are in there fully twist-lock position and are leak-proof. Maintain 1" airspace clearances to combustibles
(2" above horizontal runs). Be sure 1000º silicate sealant (Millpak #65-06-00909) is used on the inner pipe joints of all
pipe sections (DuraVent Only).

If an offset is necessary, it is important to support the vent pipe every 3 ft. to avoid excessive stress on the elbows and
possible separation. Wall straps (#45-01-00231) are available for this purpose.

Whenever possible, use 45º elbows instead of 90º elbows. The 45º elbow offers less restriction to the flow of flue gases
and intake air. If a 90º elbow is necessary there must be a minimum of a one-foot pipe section rise after the 90º elbow to
the vent cap or to the next offset. A maximum of three (3) 90ºelbows are allowed per installation.

o

Each 90º elbow, after the first 90
equivalent 90

o

elbow, reduces the maximum horizontal distance by 1-1/2’.

elbow, reduces the maximum horizontal distance by 3'. Each 45o elbow, after the first

Cut a 12" x 12" opening in the roof, center ed in t he small drilled hole placed in the roof in No. 1. The opening
should be a sufficient size to meet all clearance requirements. Continue to assemble leng ths of pipe and el­bows necessary to reach up through the roofline. G alvanized pipe and elbows may be utilized in the attic, as
well as above the roofline. The galvanized finish is desirable above the roofline due to its higher cor r osive re­sistance.

Slip the flashing over the pipe sections protruding t hr ough the roof. Secure the base of the flashing to t he r oof
with roofing nails and seal flashing to roof. Ensure the roofing material overlaps the top edge of the flashing.
Verify you have at least the minimum clearance to combustibles at t he r oofline.

Continue to add pipe sections until the pipe and the vent cap meet the minimum building code requirements, as outlined in
No. 8 on the following page.

For multi-story vertical installation, a ceiling fire stop is required at the second floor and any subsequent floors. The open­ing should be framed to 12" x 12" inside dimensions as described in step No. 5.

Any occupied areas above the first floor, including closets and storage spaces, which the vertical vent passes through,
must be enclosed. The enclosure may be framed and sheet rocked with standard construction materials, however, be
sure to maintain minimum allowable clearances between the outside of the vent pipe and the combustible surfaces of the
enclosure.

20

HIGH ALTITUDE INSTALLATION INFORMATION: Prior to installing at altitudes higher than 7500, please con-

"H" DIMENSION

ROOF PITCH

FEET

METERS

FLAT to 6/12

2

.6

7/12 to 9/12

2

.6

10/12 to 12/12

4

1.2

13/12 to 16/12

6

1.8

17/12 to 21/12

8

2.4

Height "*H" of top of vent cap can be determined as follows:

Complete installation with storm collar and vent cap.

tact the Mendota technical service department for specific venting requirements and venting restrictions.

1"

21

MENDOTA DESIGNER FRONTS INSTALLATION INFORMATION

The following Designer Fronts are available for the DXV-45 Fireplace:

1. Andover Arched Door Kit with Firescreen with optional Overlays as listed below:

2. Black Andover Overlay

3. Pewter Andover Overlay

4. Antique Copper Andover Overlay

5. Gold Andover Overlay

6. Prairie Rectangular Door Kit with Firescreen with optional Overlays as listed below:

7. Black Prairie Overlay

8. Pewter Prairie Overlay

9. Antique Copper Prairie Overlay

10. Gold Prairie Overlay

11. Black or Gold Victoria Filigree

12. Black or Gold Tuscany Filigree

13. Millennia Flat Grills in four optional color schemes as listed below:

14. Black Millennia Flat Grills

15. Full Brass Millennia Flat Grills

16. Classic Black and Brass Millennia Flat Grills

17. Classic Black and Bright Silver Millennia Flat Grills

Information specific to the installation of the Andover and Prairie Fronts

The Andover Door and Prairie Door Fronts are designed to be “Full-Face” trim kits. These two Fronts cover an area
equivalent to that shown in the diagram below. Any material that protrudes into this area on the sides, top or bottom edges
can only be flush with the front surface of
the fireplace faceplate.

If planning to install either the Andover
Door or the Prairie Door Front, DO NOT

COVER THE FACEPLATE OF THE
FIREPLACE WITH ANY MATERIALS.

Furthermore, any drywall or wall cover­ing material that is adjacent to the sides,
top or bottom of the Fireplace’s faceplate
may not protrude out past the front sur­face of the Fireplace Faceplate’s front
surface.

The Andover and Prairie Doors Mounting
Faceplate (required for installation of the
Andover and prairie Doors) may be cov­ered over with noncombustible facing
materials.

To install Tile, Marble, Slate, Stone,
Rocks or other noncombustible to en­hance the arch shape of the Andover
Doors or the Rectangular shape of the
Prairie Doors, do so only after the Ando­ver or Prairie Door Kits have been in­stalled on the DXV-45 Fireplace.

22

HEARTH PAD SURFACE MUST BE
FLUSH WITH FIREPLACE BOTTOM

HEARTH PAD

SURFACE

Hearth Protection Pad Installation Information when planning to Install the Andover or Prairie
Fronts

Any hearth protection pad installed in front of the DXV-45 Fireplace
must be designed, built and installed so that the hearth protection
pad’s top surface is flush with the bottom-most surface of the
DXV45 Fireplace. See the diagram to the right.

Information specific to the installation of Millennia
Flat Grills, Victoria Filigrees and Tuscany Filigrees

The Millennia Flat Grills, Victoria Filigree and Tuscany Filigree are
designed to be “inside-fit” trim kits. All of these trim kits fit within
the inner perimeter of the Fireplace’s Faceplate and remain flush
within the Faceplate’s front surface, see Figure below. This fitting
method allows flexibility in covering the black visible surface of the
Faceplate with non-combustible materials such as Tile, Mar­ble, Slate, Stone and Brick; as long as enough room is al­lowed for the removal of these Mendota Designer Fronts and
the glass door for servicing,

WARNING: COMBUSTIBLE MATERIALS MUST
NOT COVER THE FRONT SURFACE OF THE
FIREPLACE’S FACEPLATE.

23

GLASS FRAME ASSY.

SPRING LATCH

INSERT

TAB

IN SLOT

DETAIL A

DOOR REMOVAL AND REPLACEMENT

CAUTION: Do not operate the appliance with glass removed, cracked or broken. Replacement of the glass should be
done by a licensed or qualified service person. Glass latch tool #HA-57-00743 is supplied with the unit.:

To Unlatch Glass Frame Latches:

1. Insert Glass Latch Tool into hole in latch (two
latches exist at top of glass frame).

2. Pull Glass Latch Tool outward about 3/8”.

3. Rotate Glass Latch Tool 90 degrees.

4. Slowly Release Glass Latch Tool.

5. Remove Glass Latch Tool.

To Latch Glass Frame Latches, reverse steps 5 to 1,

above.

To Remove Glass Frame:

1. Rotate top edge of freed glass frame outward
about 15 degrees.

2. Lift Glass Frame Up and Out.

To Install Glass Frame:

1. Align and insert tabs in side flanges of Glass Frame into Slots into the slot in the side bracket.

2. Rotate Glass Frame upward until vertical.

3. Latch Glass in place per instructions above.

1.) INSERT

2.) PULL

3.) ROTATE

4.) RELEASE

24

GLASS FRAME ASSEMBLY REPLACEMENT PARTS LIST

GASKET, TADPOLE,
3/8”BULB, 3/4” TAIL

GLASS

TRACER LINES
IN GASKET

GLASS SHALL SIT BETWEEN

TRACER LINES IN GASKET

ROTATE GASKET UP
SO ADHESIVE MAKES
CONTACT WITH GLASS
SURFACE

ADHESIVE

GASKET

GASKET IN

FLAT FORM

GLASS FRAME ASSEMBLY REPAIR AND REPLACEMENT

DO NOT substitute other manufac-

turer's materials or components.
DO NOT operate unit with cracked,
broken or missing glass.
DO NOT abuse the glass door by
striking the glass, slamming the
door shut, etc

WARNING
Use only authorized parts and
materials obtained from Johnson
Gas Appliance Company when
replacing defective or damaged
glass.

WARNING

Do not operate this appliance
with the glass removed,
cracked or broken. G lass
should be replaced by a li­censed or qualified person.

TO REPLACE DAMAGED GLASS

Using an 1/8” drill bit, drill through 3 rivets on each side of glass frame.
Remove glass retainer brackets and the damaged glass and gasket material. Clean the inner surface of the glass frame.
Assemble new gasket on glass edge starting with the bottom left corner. The adhesive on the gasket should make contact
with the glass surface. Use tracer lines in gasket to determine where the glass should sit on the gasket surface.
Place glass and gasket assembly in glass frame. Carefully attach glass retainer brackets to sides of glass frame using
new 1/8” Aluminum rivets.

The glass frame assembly and its individual components are available through Johnson Gas Appliance Company. Contact

your dealer for more detailed ordering information.

ITEM PART NUMBER DESCRIPTION
1 HA-41-00313 GLASS FRAME, DXV45

2 65-02-00103
3 65-06-00658 GLASS, CERAMIC, DXV45

25

DXV45-

DT3 LOG SET PARTS IDENTIFICATION

Also included but not sho wn here are a 24 oz. bag of small c oa ls and one bag of

Inswool.

DXV45 COAL BED AND LOGS INSTALLATION

Carefully unpack the shipping boxes containing the coal bed sections and logs and remove them gently from the foam
packing. 10 Log pieces, one 24 oz bag of small coals and one bag of inswool/Rockwool are included.

Lay out the log pieces on a soft flat surface and arrange them according to the diagram, below, to aid you in through the
installation process.

26

1. Locate Fiber Coal Bed “A”. This Fiber Coal Bed
installs

between the front burner and the front of

the rear burner tube as shown below.

2. The Fiber Coal Bed “A” is placed directly
behind the front burner. The Coal Bed

‘s front

edge must touch back edge of front burner tube.

3. Slide Fiber Coal Bed “A” to the left as far as
possible. The left edge of this Coal Bed shall
touch propagation leg of front burner tube.

FIBER COAL BED “A”

A

Left Edge of
Coal Bed “A ”
shall touch
right edge of
T- Propagation
tube.

Front Edge of
Coal Bed “A ”
shall touch
back edge of
Front Burner

DXV45-DT3 LOG SET INSTALLATION INSTRUCTIONS

LOG “B”

Log “B” installed correctly

7. MAKE SURE THERE IS NO AIR SPACE
DIRECTLY UNDER THIS LOG.

8. While pushing log “B” down, put
your fingers behind the top of log
“B” to get a slight angle forward of
about 10 degrees.

4. Locate Log “B” - Back
right log.

5. Locate holes on bottom
of log.

6. Place log “B” onto the 2
pins on right side
behind the rear burner
as shown.

Holes in
bottom of Log
“B”.

B

27

9. Identify Log “C”. Back left log.

10. Locate holes on bottom of log.

11. Place log “C ” onto the 2 pins on left-side
behind the rear burner as shown.

LOG “C”

C

Holes in bottom
of Log “C” .

12. Identify L og “D”. This log will be installed between the front
and back of the rear burner tube as shown below.

13. Note that on the left end of log “D” is a curvature [along the
bottom edge].

14. The curvature on the bottom left side
sits on top of the rear burner’s inlet
tube.

15. Log “D” will be tipped slightly forward
to a maximum of a 10 degree angle
once logs “G” & “H” are installed.

Push log “D” up against
inside curve of burner.

LOG “D”

D

28

18. Identify Log “G” and locate the hole at
its bottom surface. Log “G” will be
installed on the left side of the fireplace,
with the hole on the bottom of the log
setting on the left pin in log “D”.

19.

The front end of log
“G” is notched. The
notch will

rest on the

left-most grate bar.

16. Identify Log “E” and Log “F”. Log “E” rests on left side of
the T-propagation tube . Log “E”’s left edge rests against
the front burner inlet tube, at floor level.

17. Log “F” sits on the firebox floor and against the left side
of the inlet tube on the front burner. Push this log back
as far as possible.

Log “G” position on front grate

F

E

G

HOLE IN LOG
“G” IS
LOCATED
UNDER HERE!

NOTCH

HOLE

20. Identify Log “H”. Log “H” will be installed on the
right side of the fireplace, with the hole on the
bottom of the log setting on the right pin in log “D”.

21. The front end of log “H” will be resting to the right
end of the front burner tube as shown.

Log “H” front
tip sits on flat
crimp of front
burner

H

HOLE IN

LOG
“H”.

29

22. Identify Log “I”. Log “I” will be
installed in the middle of the
fireplace, with the hole on the
bottom of the log setting on the
middle pin in log “D”.

23.

Once Log “I” is pinned to the
middle pin in Log “D”, rotate
FRONT –MOST TIP of Log “I” so
that it is 2 inches to the left of
the Right-Most Grate Bar.

2” gap

I

24.

Identify Log “J”. This log is
designed to hide the pilot light
flames and also to aid in the front
ember-bed glow effect and
realism.

25. Place Log “J” as shown here. You will
find that it sits down well and “self­positions” on the ember bed. You may
rotate the position of this log as it
suites your taste. Exact position is not
critical.

30

Place small coals between Firebox Front and front Burner. Pile the coals higher near the Front burner to build height. A ny
excess coals should be spread on the far left and far right sides of firebox to extend the coal bed effect. A couple of coals
may be place behind front burner tube on Ember Bed “A” but sparsely. Avoid covering front burner tube’s gas ports.

Hold a clump of Inswool/ Rockwool in one f ist tightl y with a sma ll portion protr udi ng out. Brush
Inswool/Rockwool over top of front burner tube , over Ember B e d “A” and over entire log ass e mbly. Brus he d
Inswooldeposits sho uld be a thin layer but enough to hide the front burner tube. Brus h generously over
front ember bed and a ll lo gs . Als o br ush lightly o ver c e nter burner tube a nd rear bur ner tube. B e carefuly
when brushing o n middle and rear burner tubes . D o not deposit la rge chunks of inswoolon middle or rear
burners. Attempt to break inswool i nto s mal l f ibe rs a s you brus h.

31

FINAL LOG SET, COALS AND INSWOOL LAY OU T R EC OMMEN DED PATTERN

Note: Some minor adjustment to coals locations may me necessary o n LP gas units. Also, so me

adjustment to brushed inswoolthickness may be necessary if inswoolbrushed over middle or

rear burner are too t hick and heavy and impede combustion air flow to burner.

COMPLETED LOGS AND COAL BED ASSEMBLY EVALUATION

See the picture, shown above. This picture shows the recommended log positions. Slight variations
in the position of each log is allowed. However, if any log position is significantly out of position in
comparison to the diagram above and if any flames are floating off the burner surface (Ghosting) af­ter 10 minutes of starting the fireplace, turn off the fireplace and contact your installer or fireplace
dealer. Have the Installer/Dealer adjust the log positions of the logs and coals and also conduct a
thorough evaluation of the venting configuration to make certain that the venting configuration con­forms to Mendota’s venting requirements, which are listed in this Installation and Operations Manual.

32

The following Check Off Lists must be completed prior to final operation of the Fireplace. Failure to do so may result in
abnormal function or dangerous operation. Ignorance of these guidelines can lead to property damage, personal injury or
death and the manufacturer’s warranty and liabilities will be voided: Keep a record of these Check OFF guidelines for fu­ture reference. Mendota may request a certified copy of these Check OFF lists to verify compliance to these printed guide­lines.

INSTALLATION CHECK OFF LIST

Co-axial vent rigid pipe, wall vent cap or roof vent cap must be installed by a Mendota ap-

q

q

proved person in accordance with instructions. All joints must be secured, "twist-locked" and
leak-proof. 1000ºF sealant use is recommended on the inner pipe joints of DuraVent pipe
sections.

Horizontal or vertical vent cap must be installed "right-side-up" and tightly sealed to structure
per instructions. Vent Caps must
Horizontal Vent Caps.

be Mendota approved. Heat Shield must be installed on

q Clearances to combustibles requirements must be strictly adhered to.
q

Proper exterior and interior clearances for vent systems and locations for wall vent cap/roof
vent cap must be maintained.

q Carefully check for correct gas pressure, proper size gas lines and for gas leaks.
q

LIGHTING CHECK OFF LIST

120 V electrical service and gas supply must be installed in accordance with instructions and
local and national codes.

q All items on "Installation Check Off List" (see above) must be completed.
q Check air shutter opening - 1/16" to 1/8" Nat. gas or 1/4" Min. LP gas.

q Carefully follow all Lighting and Log Installation Instructions.

Make certain that burner lights immediately and flame runs promptly around "curve" in burner

q

q

and lights entire burner. DO NOT proceed with operation unless burner cycles "on/off" with­out delays.

Make certain that the flame is "stable" and does not "lift" off burner. If flame lifts off burner,
turn unit off and check that all vent pipes are "twist locked" and leak proof, the vent cap is
"right side up". DO NOT proceed with operation if flame is "lifting off" burner.
Note: do not separate telescoping sections. They must be used as complete assemblies.

q Make certain glass door is in properly closed and "centered" in firebox opening.

33

SMART

ON

OFF

SMART

MODE

NORMAL

THERMOSTAT

MANUAL

MODE

68

Hi

MAXMAX

Hi

OFF

76°

F F

76°

ON SMART

76°

F

BEFORE YOU BEGIN

Read this entire manual before you use your new fireplace (especially the section “Safety Precautions” on page 2). Failure
to follow the instructions may result in property damage, bodily injury, or even death.

An Optional Wall Holder (#HA-78-00205) for the Remote Transmitter is available. Contact you dealer.

Remote Control Transmitter F u nctions

NOTE: The Receiver will “beep” once every time a
Remote Transmitter Key is pressed, signaling that the
command has been received.

Identify the four function buttons on the Remote
Transmitter:

1. ON/OFF KEY: This button turns
the system ON or OFF. When
this button is pressed and the
system is OFF, the pilot light
will stay ON if the “Standing Pilot Switch” is in

the ON position.

2. THERMOSTAT KEY: This button, when pressed after the ON/OFF KEY is pressed and the
system is ON, will allow the selection of three modes: Manual Operation, Normal Thermostat
and Smart Thermostat.

1. Manual Mode: In this mode, the room temperature is ignored and the fireplace can be turned ON indefinitely.

The room temperature rise has no effect on this mode. All other functions such as fan speed control, flame
height control, secondary burner On/OFF control and Accent Light ON/OFF controls will be manually control­lable.

2. Normal Thermostat: In this mode, the fireplace will

stay functioning until the room temperature in­creases 1

o

F above the Set Point Temperature. To
increase the Set Point Temperature, Press the UP
button until the desired temperature is displayed in
the SET POINT TEMPERATURE window. The fan
will turn on 5 minutes after fireplace startup and will
turn off 12-1/2 minutes after the flames turn off, in
this mode. The flame height can be adjusted while
the fireplace is functioning, fan speed can be ad­justed after 5 minutes of startup. Secondary burner
can be turned On or Off at any time after startup.
The Accent Light can be turned on or off any time
after startup.

3. Smart Thermostat: In this mode, all other func-
tions except the flame height adjustment are allowed. Manual flame height adjustment is not allowed in this
mode. The Smart Thermostat function adjusts the flame height in accordance to the difference between the
set point temperature and the actual room temperature. As the room temperature gets closer to the set point
temperature, the Smart Function automatically modulates the flame down.

3. UP/DOWN KEY: This key is used to increase or decrease the Set Point Temperatures, Flame
Height and Fan Speed and to toggle between Accent Light ON/OFF and Secondary Burner
ON/OFF.

4. MODE SELECTION KEY: This key is used to toggle between the various function icons : Flame
Height, Fan Speed, Accent Light Dimmer and Secondary Burner On/Off.

34

REMOTE TRANSMITTER OPERATING INSTRUCTIONS

TO TURN ON THE APPLIANCE:

1. Press the ON/OFF button. The transmitter display will show all active icons on the screen.

2. Select the Thermostat Mode by pressing the Thermostat Key: OFF (meaning Manual
Mode), ON (meaning normal Thermostat) or Smart (meaning Smart Mode).
a. In OFF (Manual Mode), the appliance will ignite and start on HI.
b. In ON (Normal Thermostat Mode), the appliance will only ignite if the Set Temperature

is greater than the Room Temperature.

c. In SMART (Smart Mode), the appliance will only ignite if the Set Temperature is greater

than the Room Temperature.

TO TURN OFF THE APPLIANCE, press the ON/OFF button.

MODE KEY: Pressing the MODE KEY toggles between the

various available functions: Flame Height, Fan Speed, Accent
Light Dimmer and Secondary Burner On/Off.

Flame Height: 6 flame height Levels are available. While the Flame

Height Icon is displayed, pressing the Up or Down button once
will increase or decrease the flame height by 1 of 6 increments.
If the flame height is at Level 1 and the Down button is
pressed, all burners will turn OFF. If in IPI mode, the pilot light
will also extinguish. If in Standing Pilot Mode, the pilot light will

remain ON. Note: If in SMART model, the flame height function
is not available for manual adjustment. In SMART mode, the flame height
regulates automatically.

Fan Speed Control: The fan speed can be adjusted through six (6) speeds

and OFF. To activate this function, press the MODE Key to index to the
fan control icon. Use the UP/Down Arrow Key to turn ON, OFF or adjust
the fan speed. A single “beep” will confirm reception of the command.
Once you set the desired fan control, the system will remember your
selected fan speed until you manually change it.

Accent-Light Dimmer:

tions. Pressing the UP key in this mode will TURN ON the Accent
Light and allow you to control the brightness of the Accent Light in 6
steps. A single “beep” will confirm reception of the command. Once
you set the desired light brightness, the system will remember your
selected brightness level until you manually change it.

This function controls the Mendota Accent Light func-

Secondary Burner: This function controls the Secondary Burner’s ON/OFF

feature. Pressing the UP Key in this mode will TURN ON the Sec­ondary Burner and Pressing the DOWN Key will TURN OFF the
Secondary Burner. The flame level will not change when you turn
the Secondary Burner On or Off. The flame level can only be
changed in the Flame Level mode.

35

TEMPERATURE INDICATOR (oF or oC)

1. Press the ON/OFF Key and Turn Off the Fireplace.

2. Simultaneously, Press both the MODE Key and the Thermostat

Key.

3. Look at the LCD display to verify that your desired indicator (

o

C) is being displayed. If not, repeat step 2.

o

F or

KEY LOCK FUNCTION

To prevent unsupervised children from operating the fireplace, a KEY LOCK function is pro­vided with this remote control system. To activate the KEY LOCK function, simultaneously
press the “MODE KEY” and the “UP KEY”. To deactivate the KEY LOCK function, simulta­neously press the “MODE KEY” and the “UP KEY”.
During KEY LOCK mode, none of the Keys will function. You must DEACTIVATE the system before you can use the Re­mote Transmitter.

LOW BATTERY POWER DETECTION

1. Transmitter Batteries: The life span of the remote control transmitter batteries depends

on various factors: quality of the batteries used the number of ignitions of the appliance,
the number of changes to the room thermostat set point, etc. When the Transmitter bat­teries are low, a Battery Icon will appear on the LCD display of the Transmitter before all
battery power is lost. When the batteries are replaced, this icon will disappear.

OPERATING DURING POWER OUTAGES

This electronic ignition system utilizes the supplied 110VAC power when it is available for all functions of this system. If the
AC power is interrupted during a power outage, plug in the battery pack (supplied with this fireplace on the right s ide of the
courtesy panel)..

During the power outage, the appliance’s bur ners will function. In addition, Flam e Height adjus tm ent and Secondary Burn­er ON/OFF functions will be available. The F an and Accent Light, which are wholly dependent on 110VAC power, will not
function.

The fireplace is designed to operate during power outages for 1-1/2 continuous hours, Maximum. The blower will not op­erate, but natural convection can be improved by removing the upper grill and opening the screen doors (depending on the
type of optional front installed). After 1-1/2 continuous hours of operation, during the power outage, turn off the burners for
1 hour and allow the fireplace to cool down. Consecutive 1-1/2 hour burn and 1 hour cool down cycles are allowed.

36

REMOTE TRANSMITTER

BLUE LCD
DISPLAY

MODE
SELECTION KEY

UP/DOWN
SELECTION KEY

THERMOSTAT

SELECTION KEY

ON/OFF KEY

“FIRST TIME” PILOT LIGHTING INSTRUCTIONS

IMPORTANT: Be sure all items on "INSTALLATION CHECK OFF LIST" in the Installation Manual have been completed!
CAUTION: If the pilot goes out, be sure to wait a minimum of five minutes before attempting to relight the pilot.

1. Make certain that any manual gas supply shut-off valves located upstream of

fireplace are open and the Master On/Off switch is toggled to the ON position.

2. Make certain that 110VAC power is connected to Electrical Junction Box on left

side of Fireplace and that the Electrical Power is “ON”.

3. Insert Batteries in the Remote Transmitter. Note the polarity of batteries and

insert as indicated on the battery compartment cover.

4. For the “First Time Lighting”, Remove the Glass Door. This is required to purge

the gas line of air and to inspect the pilot lighting spark.

5. Press OFF on the remote Transmitter. Press MODE button on Transmitter.

Press UP for “CPI” (standing pilot mode). Press MODE button again to exit.
You will hear a series of clicks and after a few seconds, you will hear sparking
at the pilot spark electrode.

6. Allow adequate time for the air in the gas-line to purge. The control system will stop sparking after 30 seconds if the

pilot light does not light. After a 30 second delay the control system will start sparking again for 30 seconds more. If
the pilot light does not light after the third 30 second spark event, the system will enter “Lock-out” mode. To unlock
from “Lock-out” mode, Press the ON/OFF button on Transmitter then Press ON/OFF button on the transmitter again
so the Transmitter display turns off. Wait 30 seconds. Turn OFF the Master Switch. Wait 30 seconds and Turn Master
Switch ON again. Repeat this sequence until the pilot flame lights and the pilot is burning steadily.

7. Once the pilot flame is lit and well-established, close glass door. WARNING: NEVER IGNITE MAIN BURNERS WITH

GLASS DOOR REMOVED OR OPEN. Doing so will lead to damage to pilot flame sensor and spark el ectrode
wire leads.

8. Press the ON/OFF button on Transmitter to “ON”. All burners should ignite

and run at “high-fire”. Toggle through other functions of the Fireplace
(Flame Height, Fan Speed and Accent Light brightness) to verify all func­tions.

9. Perform gas inlet and outlet pressure tests and leak tests on field installed

gas fittings and factory installed fittings in the gas valve compartment, at this
time. Note: Burners must be ON to check outlet pressures and to leak test
gas train fittings upstream of main gas valve.

INITIALIZING THE REMOTE CONTROL SYSTEM

MASTER SWITCH: Remote Transmitter WILL NOT communicate to receiver
unless the Master Switch is ON. The master switch when OFF disable all
functions and acts as a Master Safety Shutoff Switch.

(Synchronizing Receiver and Transmitter)

Master Switch and Sync Switch are located beneath the Glass Frame.

1. Toggle Master Switch to ON (pull toward front of unit). Remote Transmitter

WI LL NOT communicate to receiver unless the Master Switch is ON.

2. Locate Sync Switch (directly above Master Switch). Press the Sync Button.

The receiver will beep 3 times indicating that it is ready to synchronize with
a Remote Transmitter.

3. Push the “ON” key on the Remote Transmitter. The receiver will beep 4

times to indicate that the Transmitter’s command is accepted and sets to
the particular code of that Transmitter. The system is now initialized.

NOTE: Once synchronized, the Transmitter and Receivers will communicate
permanently and no further Synchronizing steps are necessary unless either
the Transmitter or Receiver is replaced.

37

ATTENTION!

Supply voltage

4.5V (three 1.5V AAA batteries)

Ambient temperature ratings

32 – 122 oF (0 – 50 oC)

Radio Frequency

315 MHz

IPI/STANDING PILOT SYSTEM INFORMATION

• The transmitter and receiver are RADIO FREQUENCY DEVICES.

• Turn off the main gas supply of the appliance during installation or maintenance of the receiver.

• Toggle the Master Switch to OFF during installation or maintenance.

• During appliance installation/maintenance or in case of remote control malfunction, turn off electrical sup-

ply to this appliance and remove the Backup batteries. Contact technical service.

REMOTE CONTROL

Intermittent Pilot Light and Standing Pilot Light Features

This gas fireplace is equipped with an electronic ignition System that first lights a pilot light then uses the pilot light to ignite
the main burners. The pilot light can be set in the CPI (Standing Pilot) mode to allow the pilot light to remain on indefinitely
by setting the Remote Transmitter to CPI mode. If the remote transmitter is set to the IPI (Intermittent Pilot) mode, the
pilot light will only light and remain ON while the main fireplace burners are operating.

IPI Mode: This mode turns the pilot light “OFF” when the fireplace is not functioning and only lights the pilot light automat­ically when a call for heat is made by the remote control.

(CPI) Standing Pilot Mode: If set to CPI Mode, the
pilot light will ignite and remain ON at all times.

Setting to IPI versus CPI mode:

With the remote transmitter OFF, press the MODE
button. You will see either “CPI” or “IPI” displayed
on the transmitter screen. Press the UP arrow but­ton to set “CPI” mode and press the DOWN arrow
button to set “IPI” mode. One set to the desired
setting, press On/Off button to activate the fire­place.

NOTE: Mendota Fireplaces recommends that
the (CPI) Standing Pilot Mode be used during the winter months when the average daily high temperature falls
below 50

excessive condensation of exhaust vapors on the door glass. Further, leaving the fireplace in the Standing Pilot Mode will
keep the fireplace body warm and eliminate cold drafts and heat loss to the cold air that is trapped inside the firebox.

38

o

F. This will keep the fireplace chimney heated for proper updraft during burner ignition and it will also eliminate

Backup Batteries

Backup Batteries are to be installed in the Battery Pack located on the right side of the Courtesy Panel beneath the glass
frame. The life span of the backup batteries depends on the quality of the batteries used and how long the batteries have
been installed in the Battery Pack. With good quality batteries, you can expect proper operation for periods in excess of 2
weeks.

These batteries are only utilized during power outages. Replace these batteries every heating season even if you have not
experienced any power outages. Batteries drain slowly even when not in use. This is a normal characteristic of all batter­ies. To prevent the batteries from bleeding while not in use, you may choose to remove the backup batteries and install
them only when they are needed.

OPERATING DURING POWER OUTAGES

This electronic ignition system utilizes the supplied 120VAC power when it is available for all functions of this system. If the
AC power is interrupted during a power outage, this system utilizes the batteries (installed in the Battery Pack) as back-up
batteries. During the power outage, the appliance’s burners will function. In addition, Flame Height adjustment and Sec­ondary Burner ON/OFF functions will be available. The Fan and Accent Light, which are wholly dependent on 110VAC
power, will not function.

The fireplace is designed to operate during power outages for 1-1/2 continuous hours, Maximum. The blower will not op­erate, but natural convection can be improved by removing the upper grill and opening the screen doors (depending on the
type of optional front installed). After 1-1/2 continuous hours of operation, during the power outage, turn off the burners for
1 hour and allow the fireplace to cool down. Consecutive 1-1/2 hour burn and 1 hour cool down cycles are allowed.

39

BLOWER OPERATION AND WIRING

WARNING: The Electrical Junction box within this appliance must be connected to a grounded LIVE power circuit. No

switches, Light Dimmers or Fan Speed Control Devices are allowed within the same electric circuit as this appliance.
Connect only to a LIVE electrical power supply that is not controlled by any other switching device.

Dual blowers are provided as standard equipment with this DXV45 DT3 Fireplace. The dual blowers have an air output
rating of 210 CFM (in free air). This Fireplace is designed to operate with the blowers turned ON when the appliance is
running and hot. The blowers increase the overall efficiency of this fireplace and aid in distributing and circulating heat
to the room this Insert is installed in.

BLOWER BREAK-IN PERIOD: The integrated blowers in this Insert may exhibit some bearing noise and electrical stat­ic noise during the first few hours of operation. This is normal during the break-in period. It is recommended that follow­ing the Paint Curing Cycle, the blowers be run at their maximum speed for two 3-hour periods. The blowers in a few
units may take longer to break-in and may require additional operation time before all extraneous noise is eliminated.
Please allow adequate operational time (a minimum of 2 weeks) for the blowers to break-in before you contact your
dealer for service.

WARNING: Label all wires prior to disconnection when se rvicing controls. Wiring errors can cause improper and
dangerous operation. Verify proper operation after servicing.

BLOWER OPERATION

This Fireplace is designed so the blower operates at all times the fireplace is operating. The blower output can be
regulated with the Remote Control. NOTE: There will be a time delay in blower operation during "heat-up" (approx. 10
minutes) and extended blower operation during "cool-down" of unit. (Approx. ½ hour). NOTE: Power supply to blower
must be continuous. DO NOT use a switch or variable speed control in the power supplied to fireplace.

OPERATION DURING POWER OUTAGES

The fireplace is designed to operate during power outages for 1-1/2 continuous hours, Maximum. The blower will not
operate, but natural convection can be improved by removing the upper grill and opening the screen doors (depending
on the type of optional front installed). After 1-1/2 continuous hours of operation, during the power outage, turn off the
burners for 1 hour and allow the fireplace to cool down. Consecutive 1-1/2 hour burn and 1 hour cool down cycles are
allowed on if fired on the maximum HIGH FIRE setting. If only the FRONT BURNER is fired, you may run this fireplace
indefinitely during a power outage at this LOW FIRE setting.

40

SYMPTOM

PROBABLE CAUSES

CORRECTIVE ACTION

glass with cloth or paper towel.

flame will reduce the heat output of the unit.

NEVER BLOCK AIR INTAKE OR OUTLET VENTS.

Pull Out Opens,

TROUBLESHOOTING MENDOTA GAS DXV FIREPLACE

1. Thin black coating (soot)
forms on viewing glass.

2. Humming or whistling
coming from Fireplace.

3. A change in flame ap­pearance or burner operation.

MAIN BURNER GAS FLAME ADJUSTMENT

During initial installation the burner should be removed and veri­fied that the air shutter opening is set correctly at 1/8" to 1/4"

open for Natural gas and 1/4” - 1/2" minimum open for L.P.
gas.
NOTE: For altitudes above 5,000 ft., some variations may be
required.

A. Incorrect gas
pressure

B. Not enough
combustion air

A. Normal operating
noise. (See "Quiet Oper­ation" pg. 25)

A. A change in gas
pressure.

B. Carbon dirt or lint.

Have gas supplier check for correct gas pressure (7"
W.C. Nat. Gas; 11" W.C. LP Gas).
If sooting continues open-air shutter on burner (see
"Gas Flame Adjustment" below).
If sooting still continues, shut off unit and call Mendo­ta service person.
NOTE: To clean glass - remove glass and wipe

Some noise is normal. It is caused by the gas supply
flowing through the gas orifice. It is expected from
any gas fireplace. The noise can be reduced by turn­ing the Hi/Lo Knob on the control. Turning down the

Have your gas supplier check for correct gas 7" W.C.
Nat. Gas; 11" W.C. LP Gas). If flame still needs
adjustment see "Flame Adjustment" below.
Clean out carbon, spider webs, lint, etc. from shutter
area.
Logs and burner.

REAR BURNER
SHUTTER KNOB

Be sure burner and logs are properly installed. After burner has
been properly installed and operated for two to three hours, small
additional adjustments to the air shutter may be necessary for
final flame appearance. These small shutter adjustments can be
made by the following procedure:

NOTE: Very small changes in shutter settings make major
changes in flame appearance.

Air shutter knob is located behind the lower grill.
If flame is too "blue" slowly push air shutter control knob in small
1/16" increments until flame turns desired realistic "orange."
If flame is too "orange" or is causing sooting on viewing glass or
on logs, pull air shutter control knob outward in 1/16" increments until sooting stops. IF SOOTING DOES NOT STOP,
TURN OFF UNIT AND CALL YOUR MENDOTA SERVICE PERSON.
The front coal bed burner is pre-set at 1/8" open. Normally, no adjustment is required. For LPG applications, a slightly
larger (greater than 1/8” opening in the front burner air shutter may be required if soot deposits on front logs or on coal
chunks).
IMPORTANT: Try each new shutter setting approx. ½ hour before making additional changes. NOTE: Changes in
front burner flame can be made by re-arranging the coals.
CAUTION: Any changes in pilot flame must be made by qualified person and checked with voltmeter.

41

Push in Closes.

CUSTOMER INFORMATION AND TROUBLE-SHOOTING

MAXIMUM ALLOWABLE SURFACE TEMPERATURES

Mendota Fireplaces comply with UL Standards for maximum surface temperatures on exposed and embedded combus­tible surfaces adjacent to the unit. The Maximum allowable surface temperature is 117° F. over ambient (room) tempera­ture on exposed surfaces. Thus, if a room is 70° – 80° the exposed combustible surfaces immediately surrounding the
Fireplace can have a surface temperature as high as 187° F. – 197° F. (too hot to touch). The continuous blower opera­tion automatically keeps temperatures within these safety limits. During Power Outages, remove upper grills on Millennia
Fronts, open doors on Andover and Prairie Fronts and remove upper grills, remove Victoria and Tuscany Upper Face.
This will increase convection air flow and prevent overheating.

OVER FIRING OF BURNER

NEVER "over fire"
tions. Over firing can cause permanent damage to firebox and deterioration of parts and void warranty.

MAINTAINING CORRECT PILOT FLAME - PILOT OUTAGE & RELIGHTING

Never lower (reduce) pilot flame length less than 1 inch long.
If pilot goes out, be sure and wait a minimum of 5 minutes before attempting to e-light the pilot flame.

CLEANING VIEWING GLASS
CAUTION: Do Not use oven cleaner to clean glass. The viewing glass should be cleaned periodically. Exterior glass may

be cleaned with cleaner as desired. Interior glass - use soap and water, Kel Kem Glass Cleaner or equivalent.
NOTE: Additives that are put in gas (both natural and propane) to make it smell, can be harmful to glass and can leave a

white film deposit on the glass. This deposit can be removed with cleaners such as KEL KEM “Polish Plus” or comparable
product (See your dealer).

In some cases (especially propane) additives can cause “crazing” or etching on the glass. Although this is not normal, it is
not covered under the warranty. The solution may be to change propane suppliers.

units by adjusting gas pressure or drilling out the orifice to increase BTUH above nameplate specifica-

SOOTING

Sooting is caused by improper installation or improper burner air shutter operations. However, some small areas of soot
deposits on log surfaces are deemed acceptable. Open the burner air shutters if you observe sooting. If you observe large
soot areas (larger than 1”x2”) on log surfaces or signs of sooting on the door glass (usually a thin black film on the Fire­place viewing glass or on the outside of the home around the vent cap), open both burner air shutters fully. If sooting con­tinues, the unit must
correct "sooting" problems, but Mendota and their dealers are not
that has not been immediately brought to their attention.

OPERATION DURING POWER FAILURE

The fireplace is designed to operate during power outages for 1-1/2 continuous hours, Maximum. The blower will not
operate, but natural convection can be improved by removing the upper grill and opening the screen doors (depending
on the type of optional front installed). After 1-1/2 continuous hours of operation, during the power outage, turn off the
burners for 1 hour and allow the fireplace to cool down. Consecutive 1-1/2 hour burn and 1 hour cool down cycles are
allowed on if fired on the maximum HIGH FIRE setting. If only the FRONT BURNER is fired, you may run this fireplace
indefinitely during a power outage at this LOW FIRE setting.

Hot air convection may be improved by removing upper grill of the Millennia and Deerfield Fronts, opening the doors on the
Andover and Prairie Fronts and opening the screen on the Wellington Front.

Replace these parts for operation after the unit has cooled completely and power is restored.

be immediately turned off and the local Mendota dealer promptly informed. Mendota dealers will

responsible for damage caused by excessive sooting

42

MAINTENANCE

ANNUAL MAINTENANCE OF THIS MENDOTA FIREPLACE IS REQUIRED.

The following procedures must be performed each year by a Mendota approved service person. NOTE: Any adjust­ments to burner, pilot or logs must

A. Replace backup batteries at least 2 times annually. Replace them when the Day Light Savings Time changes.
B. Clean all lint and dust build-up around the control. Inspect the condition of any wiring under the burner for

melting or damage.

C. Remove logs & coals and clean away any foreign matter (lint, Carbon, etc.) on the burner and logs. Be sure

the burner ports are "open". Clean the pilot and under side of the logs for any Carbon deposits. NOTE: Logs
should be visually checked for Carbon "build-up". If c arbon depos its are visible on logs, unit s hould be turned

off and Mendota service person contacted. Be sure logs are re-installed per instructions.
D. Check condition of glass door gasket, gasket must seal tightly over firebox, replace if necessary.
E. Periodically check to verify that the vent system and vent cap are open and free of blockage.
F. Before re-installing glass, have qualified service person check the operation of the pilot

G. The viewing glass should be c leaned periodically. Exterior glass surface may be cleaned with cleaner as desired.

To clean Interior glass surface, use Kel Kem

oven cleaner or abrasive cleaners to clean glass. Do not clean when glass is hot

H. Periodic visual check of pilot flames and the pilot ignition spark system is required. Pilot lighting Spark must origi-

nate on Pilot Spark Rod Tip and end at Pilot Hood every time the system initiates a spark. Pilot flame must ignite

within 5 sparks once gas flows out of pilot hood. Pilot Flame must be at least 1-inch long and must overlap Flame

Sensor and burner ignition ports at all times.

be done by a qualified Mendota service person.

“polish plus" (part # 65-06-00455) or comparable product. Do not use

.

Periodic visual check of main burner’s rear and front flames is required.

43

WIRING SCHEMATICS

Note: The DXV45 DT3 ignition system utilizes Transformed DC power for normal ignition functions. In the event of a power
outage, the Battery Pack power is utilized.

IGNITION SYSTEM WIRING SCHEMATIC

44

Burner Orifices

#65-14-00053[53 DRILL]

#65-14-00364[3/64 DRILL]

Motorized

LP Pressure

Regulator

[10.0-5.5"WC]

# 907.012

53

364

NATURAL TO LP GAS CONVERSION INSTRUCTIONS

Kit # HA-42-00302 Mendota Model DXV45-DT3-LX

This conversion kit shall be installed by a qualified service agency in
accordance with the manufacturer’s instructions and all applicable
codes and requirements of the authority having jurisdiction. If the infor­mation in these instructions is not followed exactly, a fire, explosion or
production of carbon monoxide may result causing property damage,
personal injury or loss of life. The qualified service agency is responsi­ble for the proper installation of this kit. The installation is not proper
and complete until the operation of the converted appliance is checked
as specified in the owner instructions supplied with the kit.

Caution: The electrical supply to the fireplace must be turned off prior
to performing the conversion. The gas supply must be shut off prior to
disconnecting the electrical power.

ORIFICE SIZES REQUIREMENT:

LP Conversion Kit # HA-42-00225 contains the following parts: One
Motorizedl LP Pressure Regulator #907.012, one Cap Orifices #65-14­00364(drill #3/64”), one Cap Orifice #65-14-00053 (drill #53) and an
L-shaped Torx wrench.

RECOMMENDED PROCEDURE TO CONVERT THIS FIREPLACE TO BURN LPG

This Fireplace Insert arrives from the factory ready to burn Natural Gas. If you intend to burn LPG, it is highly recommend­ed that you convert this fireplace and its Pressure Regulator, Pilot Orifice Clip and Burner Orifices prior to placing this fire­place in its fireplace cavity.

See diagrams, on this page, and follow these instructions to prepare this fireplace for conversion to LPG.

1. Using a ¼” Hex Driver, remove screws that secure the Rear and Front burners to the Burner Airbox.

2. Pull forward and remove Front Burner.

3. Loosen Front Burner Air Shutter Screw and rotate air shutter open ¼” minimum. Secure Air Shutter Screw. Set burner
aside.

4. Pull Rear Burner forward about 1” and lift up and remove from Firebox.

45

5. Using a ½” deep well socket wrench, remove Front and Rear Orifices.

HINT: PACK SOME SOFT PAPER OR INSWOOL INSIDE DEEP WELL SOCKET TO STOP CAP ORIFICE FROM
SLIDING TOO FAR INTO THE SOCKET.

6. Thread a new 3/64” drilled orifice to the Front Orifice mounting brass fitting and new #53 drilled orifice to the Rear Ori­fice mounting brass fitting. Tighten down orifices.

7. Locate Pilot Light on left side of firebox. While holding the pilot base body with large vice grips tightly, loosen Pilot
Light’s hex shape base using a ½” open end wrench. Rotate counter clock-wise ¼ turn to loosen.

8. Pilot arrives from the factory set for NG. Push NG/LP Adjustment Clip inward all the way to set it for LP. See detail
view, below. If you see “NAT” printing on the Adjustment Clip, this indicates that the pilot is set to burn NG. Push Clip
in so that “NAT” is not visible.

9. Tighten down Hex shaped base of pilot using a ½” open end wrench.

46

.

10. Before reinstalling burners, loosen the screw that secures the rotary air shutter on the Front Burner. Rotate the air
shutter open to ¼” minimum.

11. Install both rear and front burners in their original locations and positions and secure down using screws you removed
earlier.

12. Make certain front and rear burners are running parallel to front face of unit and positioned properly so that the pilot
light flames are pointed properly towards the burner’s flame propagation ports.

BURNER MOUNTING SCREWS

47

INSTALLING THE LP PRESSURE REGULATOR

WARNING: READ AND UNDERSTAND ALL INSTRUCTIONS PACKAGED WITH LP PRESSURE REGULATOR BODY
BEFORE YOU ATTEMPT THE CONVERSION. FAILURE TO FOLLOW ALL INSTRUCTIONS WILL RESULT IN A LEAK
OR OVERFIRING OF THE APPLIANCE AND CAN LEAD TO AN EXPLOSION OR A FIRE HAZARD.

1. Remove the Courtesy Access Panel mounted behind the lower grill and lay down gently without disconnecting any

wires of internal components. WARNING: DO NOT FORCE. EXCESSIVE FORCE MAY DAMAGE INTERNAL
WIRING COMPONENTS!

2. Follow Instructions given below directly from SIT Controls. Replace Extension Knob as the final step.

48

INLET TAP

LP GAS PRESSURE REQUIREMENTS

Inlet and manifold gas pressure checking taps are located on gas valve. These ports are only accessible from the outer left
side of the fireplace. A qualified installer shall take pressure measurements at these ports to verify and set the correct gas
pressures during the LP Kit installation and before fascia materials are installed over the front of this fireplace. Manifold
pressure must
burner operating by a qualified installer.

be taken at the “MANIFOLD PRESSURE" tap and inlet pressure at the "INLET PRESSURE" tap with the

DESIRED

INLET

PRESSURE

MINIMUM

INLET

PRESSURE

MAXIMUM

INLET

PRESSURE

MANIFOLD

OUTLET

PRESSURE

AIR SHUTTER

POSITION

L.P. GAS 11.0" W.C.

(2.75 kPa)

REGULATE THE FLAME HEIGHT TO "HIGH" POSITION. OUTLET GAS PRESSURES MAY VARY PLUS OR MINUS 5%.

11" W.C.

(2.75 kPa)

13.0" W.C.
(3.24 kPa)

10.0" W.C.
(2.5 kPa)

1/4" OPEN MIN.

(5 mm)

LPG PROPER INPUT RATES

With the proper orifices installed, as specified above,
this fireplace utilizing LP Gas will have a maximum
input rate of 31,000 Btu/Hr.

LEAK TESTING REQUIREMENTS

Prior to completing the conversion process, check for
gas leaks with soap and water solution at all plumbing
joints prior to placing this appliance into operation. It
is recommended that all gas-plumbing joints, factory
installed and field installed are checked for leaks.

PILOT FLAME AND MAIN BURNER RELATIONSHIP

OUTLET T AP

VERIFICATION

Prior to completing the conversion process, the qualified service technician must,
light the pilot light and verify the relationship between the pilot light flames and the main burners. The pilot light flames di­rected towards the propagation ports on the rear and front burner must overlap the propagation ports on the burners. The
pilot light flames must be a minimum of ¾” long and must overlap the propagation ports on both the rear and front burners
as shown in the diagram, below. Verify that the burner tubes ignite quickly and the burner flames propagate smoothly
along the entire length of the burners.

Figure 5: Pressure Test Port

PILOT FLAME LENGTH ADJUSTMENT

If the pilot light flame length is too short and the system does not maintain a standing pilot, a qualified installer may in­crease the length of the pilot light flames to meet the two requirements: Minimum pilot light length to maintain a standing
pilot light and the pilot light flames must be long enough to overlap the front and rear burner ports, 1 inch long minimum.

CHECKING FOR NORMAL BURNER(S) IGNITION CHARACTERISTICS

Once the conversion to LPG and all the above steps have been completed, light the main burners.
Turn Gas Dial counterclockwise to "ON" then set Thermostat or push Main Burner ON/OFF switch to turn on burners.

Main burner should now light IMMEDIATELY and flame should not "lift" off burner. If there is any delay in ignition or if
flame is "lifting off" burner, turn off burner and carefully check for proper installation of logs/coals, vent system and proper
pilot flame impingement on burner and thermopile. Logs or coals must not block pilot flame or main burner flame. Vent
system must be leak proof.

GAS LEAK TEST REQUIREMENT: It is the responsibility of the installer/service person to assure that each and

every gas connection and supply tubing that are a part of this fireplace are leak proof. The qualified/ certified individual
connecting the gas supply line, performing pressure tests or performing any service to this fireplace is required to perform
a THOROUGH LEAK TEST on ALL gas fittings that are a part of this appliance or the gas supply line connection using
soap-water solution or a calibrated combustible gas detector. Failure to perform this leak test may lead to a house fire
and/or an explosion. Mendota is not responsible for any damages due to an Installer’s failure to conduct a leak test and
verify that all connections and supply lines are leak proof.

WARNING: Do not operate appliances with glass front removed, cracked, or broken. Re­placement of glass should be done a licensed or qualified service person.

49

65-02-00103

GLASS GASKET

05-04-00065

PILOT ASS'Y. NAT.

65-06-00658

GLASS - FLAT

HA-42-00210

DOOR FRAME ASS'Y. – FLAT

HA-42-00302

LP KIT

65-14-00038

REAR ORIFICE (Nat. Gas) # 38

35-01-00320

LOG SET

65-14-00044

FRONT ORIFICE (NAT. Gas) # 44

65-14-00053

REAR ORIFICE (LP Gas) # 53

35-01-00239

GLOWING INSWOOL

65-14-00364

FRONT ORIFICE (LP Gas) # 3/64

35-01-00302

FIREBRICK KIT

35-01-00304

EMBER FLOOR SET

05-01-00157

SNAP-DISC (FAN TEMP SENSOR)

10-01-00003

RHEOSTAT

05-02-00364

VALVE NAT. GAS

15-02-00064

RIGHT HAND BLOWER - ONLY

HA-42-00011

MAIN BURNER TUBE WELDMENT

15-02-00065

LEFT HAND BLOWER - ONLY

70-01-00080

FRONT BURNER

REPLACEMENT PARTS
MENDOTA DXV-45 DT3 FIREPLACE

PART NO DESCRIPTION PART NO DESCRIPTION

WARNING: Use only authorized parts and materials obtained from Johnson Gas Appliance when replacing any defective

or damaged parts.

DO NOT substitute other manufacturer's materials or components.
DO NOT operate unit with cracked, broken or missing glass.

50

NATURAL GAS
(Gaz Naturel)

PROPANE GAS
(Gaz de petrole liquefie (GPL))

Input Rating (Btu/hr) 0 - 610 m (Entrée nominale)

45,000

40,000

Min. Input Rating (Btu/hr) 0 - 610 m (Minimale En­trée nominale)

6,500

5,000
Orifice 0 - 610 m (Orifice)

Front #44 Rear #38

Front 3/64" Rear #52

Orifice 610 - 1370 m (Orifice)

Front #45 Rear #38

Front 3/64" Rear #53

Maximum output (Btu/hr) (Sortie maximale)

32,400

28,800

Manifold Pressure (in w.c./kPa) (Pression au
collecteur)

3.5/0.87

10.0/2.5

Manifold Pressure, low (in w.c./kPa) Pression
d'entrée minimale)

1.7/0.42

3.6/0.90
d'entrée minimale)

LISTING LABEL, RATING PLATE REPSENTATION

LISTED DIRECT VENT GAS FIREPLACE HEATER POÊLE AU GAZ HOMOLOGUE’, A
AÉRATION DIRECTE
NOT FOR USE WITH SOLID FUEL (NE DOIT PASÉ UTILISÉ AVEC UN COMBUSIBLE
SOLIDE)

Manufactured by (Fabriqué par): JOHNSON GAS APPLIANCE CO. CEDAR RAPIDS, IOWA
CERTIFIED FOR CANADA HOMOLOGUÉ POUR LE CANADA
Tested to (Testé aux normes) ANSI Z21.88-2005 • CSA 2.33-2005 • CAN/CGA 2.17-M91 and
ANSI Z21.50-1996.

WARNING: Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal
injury, or loss of life. Refer to the owner's information manual provided with this appliance. Installation and service must
be performed by a qualified installer, service agency or the gas supplier. For use with glass doors certified with the appli­ance only. Do not operate with glass panel(s) removed, cracked, or broken. This vented gas fireplace heater is not for
use with air filters. Register kit may be used.

MISE EN GARDE: Installation, réglage, modification, entretien ou depannage non appropriés pourront causer des
blessures ou des dommages materiels. Réferéz-vous au manuel du proprietaire fourni avac cet appariel. Pour assistance
ou renseignements complémentaires, veuillez consulter un installateur expérimenté, une agence dé depannage/entreitien
ou cotre compagnie gaziére. Pour utilisation avec les portes en verre certifiée l'appareil suelement. Ne pas opérer avec le
verriére enlever, craquelure, brise.

Minimum Inlet Pressure (in w.c./kPa) (Pression

This appliance is only for use with the type of gas indicated on the rating plate and may be installed in an afrtermarket,
permanently located manufactured (mobile) home where prohibited by local codes. See owner's manual for details. This
appliance is not convertible for use with other gases, unless a certified kit is used.
Cet appareil sera installé conformémént avec les codes locaux, le cas écheant. Si aucun code n'existe, suivez la norme
ANSI Z223.1 ou la norme CAN/CGA (ACNOR)-B149.

MINIMUM CLEARANCES TO COMBUSTIBLE CONSTRUCTION
Unit to adjacent sidewall 10 in. (254mm)
Unit to floor 0 in. (0mm) Vent to enclosed top 3 in. (76.2mm)
Unit to enclosure sidewall 1 in. (25 mm) Vent to enclosed side 14-3/4 in. (375mm)
Unit to enclosure back wall 1/2 in. (13mm) Wall Pass-Through to framing 0 in. (0mm)
Unit top to ceiling 14-1/4 in. (374mm) Mantle above discharge air opening 13 in. (330mm)

CAUTION: Hot while in operation. Do not touch. Keep children, clothing, furniture, and flammable liquids or vapors away.
ATTENTION: L'appareil est chaud lorsqu'il fonctionne. Ne pas toucher l'appareil. Survieller les enfants. Garder les
vétements, les meubles, l'essence ou autres liquides a capeur inflammables loin de l'appareil.
Electrical Rating (Courant nominal): 120 volts 60 hertz 1.5 amperes
DO NOT REMOVE OR COVER THIS LABEL VEILLEZ Á NE JAMAIS ENLEVER NI DISSIMULER CETTE ÉTIQUETTE
MODEL: DXV-45

WH# __________________

51

5.0/1.25 11.0/2.75

THIS PAGE LEFT BLANK I NT ENTIONALLY

52

MENDOTA WARRANTY QUALIFICATION & SERVICE REFERENCE FORM

As a part of Mendota's on-going program of customer satisfaction, this Form verifies proper installation and operation. It is
important as a reference for future service. It insures long life and trouble-free operation of Mendota fireplaces & stoves
and qualifies the owner for Mendota's lifetime limited warranty. Owner should sign Form when completed and mail a copy
along with Warranty Registration to Mendota. OPTIONALLY, PLEASE REGISTER AT OUR WEBSITE AT:
WWW.JOHNSONGAS.COM/MENDOTA-REGISTRATION.ASP

HOME OWNER: ____________________________ DEALER: _____________________________
ADDRESS: ________________________________ ADDRESS: ____________________________
CITY/STATE/ZIP: ___________________________ CITY/STATE/ZIP: _______________________
SIGNATURE: ______________________________ PHONE: ______________________________

MODEL #: DXV-45DT3LX __________________ SERIAL #: _____________________________
DATE INSTALLED: _____ ___________________
Mendota direct vent fireplaces are sophisticated, hi-tech gas appliances. All installation and operating instructions must be

carefully followed. The DXV fireplace must

REF: MENDOTA DXV45-DT3-PF2-LX INSTALLATION MANUAL

q APPROVED VENT PIPES AND VENT CAP INSTALLED - Per Manual.

Vent pipes must be fully twist-locked and leak proof.

Check minimum and maximum vertical / horizontal and vent runs.

q CHECK FOR PROPER CLEARANCES TO COMBUSTIBLES & VENT LOCATIONS - Per Manual

be installed and serviced by a qualified Mendota approved service person.

q INSTALL PROPER SIZE GAS LINES - CHECK FOR GAS LEAKS - Per Manual
q CHECK FOR CORRECT GAS PRESSURE AT MANIFOLD - Per Manual

a. 3.5 Inches Water Column Maximum - Nat. Gas (1/8” WC variation is allowed)
b. 10.0 Inches Water Column Maximum - L.P. Gas (1/8” WC variation is allowed)

q CYCLE BURNERS ON/OFF FOR PROMPT IGNITION - Per "LIGHTING INSTRUCTIONS"

Burner must light IMMEDIATELY - Flame must travel promptly around "curve" & light burner.

q INSTALL LOGS AND ADJUST FLAME - Per Manual

Proper pilot flame impingement on flame sensor & burner - Air shutter opening: 1/16" - 1/8" Nat. Gas - 1/4" LP

Check that flame is "stable" and is not "lifting" off burner

q BRIEF OWNER ON OPERATION AND MAINTENANCE OF UNIT

 Light Pilot  Operate Burner  Explain blower "delay" operation

WARRANTY REGISTRATION
Your Name ________________________________________________________________
Address ___________________________________________________________________
City _____________________________________ State ____ Zip ____________________
Dealer (Place of Purchase) ___________________________________________________
City _____________________________________ State ____ Zip ____________________
Date of Purchase ___________________ Serial Number ___________________________
Purchaser's Signature _______________________________________________________

MENDOTA DXV-45DT3 DIRECT VENT FIREPLACE

CUT OUT PAGE AND MAIL TO: JOHNSON GAS APPLIANCE CO., 520 E AVE. N.W., CEDAR RAPIDS, IOWA 52405

PLEASE REGISTER AT OUR WEBSITE AT: WWW.JOHNSONGAS.COM/MENDOTA-REGISTRATION.ASP

53

TAPE SHUT

--------------------------------------------------------------------------------------------------------------------------------------------------------

POSTAGE

NEEDED

JOHNSON GAS APPLIANCE COMPANY

54

520 E AVENUE N.W.

CEDAR RAPIDS, IA 52405

MENDOTA EXTENDED PROTECTION AND LIMITED WARRANTY

MENDOTA DXV45 DIRECT VENT FIREPLACE INSERT

Mendota Division of Johnson Gas Appl i ance Company, 520 E Avenue N.W. Cedar Rapids, Iowa 52405, extends this Extended Protection
and Limited Warranty to the original purchaser of a Mendota F V 46 F i repl ace, which is limit ed and us ed under normal home conditions .

STANDARD WARRANTY:

JOHNSON GAS APPLIANCE CO., MENDOTA DIVISION, WARRANTS THAT YOUR NEW MENDOTA FIREPLACE AND ALL ITS
COMPONENTS ARE FREE FROM MANUFACTURING AND MATERIAL DEFECTS FOR A PERIOD OF ONE YEAR FROM THE DATE OF
INSTALLATION. SUBJECT TO PRO OF OF PURCHASE AND THE CONDITIONS AND LIMI T ATIONS OUTLINED, BELOW.

EXTENDED WARRANTY:

THE MAIN BURNER ASSEMBLIES ARE WARRANTED FOR A PERIOD OF 2-YEARS TO THE ORIGINAL OWNER, FROM THE DATE OF
PURCHASE. SUBJECT TO PROOF OF P URCHASE AND THE CONDITIONS AND LIMITATIONS OUTLINED, BE L OW.
THE HEAT EXCHANGER, COMB USTION CHAMBER AND OUTE R SHIELD OF THE MENDOTA FV46 FIREPLACE ARE WARRA NT ED
FOR 10-YEARS TO THE ORIGINAL OWNER. SUBJECT TO PROOF OF PURCHASE AND THE CONDITIONS A ND L IMITATIONS
OUTLINED, BELOW.

1) This new Mendota Fireplace must be install ed & serviced by a competent, authorized service contractor. It must be inst al l ed and op­erated at all times i n accordance with the installat i on and operat i ng i nstructions furnished with t he F i repl ace. All adjustments to logs,
coals or burner must be m ade by an authorized Mendota person. Any alteration, willful abuse, accident or misuse of the product shall
nullify this warranty. This warranty does not c over gl ass or log breakage.

This li mited warranty does not cover the cost of service calls, the cost of labor to remove or i ns tall parts covered by this limited warran-

ty, freight or other transportat i on expenses , which may be incurred in connection with obtaining performances under thi s l i mited war­ranty. The remedy for damages as the result of any defects i n this product which have been warranted herein is limited to replacement
parts and does not include any inci dent al , indirect or consequential damages or expenses sustained in c onnection with the product, in­cluding damages to property, except as provided by law.

2) This warranty is non-transferable and is made to the original retail purchaser, provided t he purchase was made through an authorized
Mendota dealer.

Mendota is not responsible for any dam age to or malfunction of the Fireplace unless caus ed by a defect in material or workmanship
from normal home use. Damage caused by abuse, improper installation, i mproper servicing, and instal l ation by unqualified personnel
or breech of conditions of thi s limited warranty will excuse Mendota from perf ormance of any part of this limited warranty. Mendota has
the right to investigate and inspect the exact, original Firepl ac e and entire installation (without any alt erations or tampering) in the event
a claim is m ade t o determine whether the claimed damage or malfuncti on was caused by abuse, improper installation or other cause
outside this warranty. Mendota is not res ponsible for any repairs or material purchases that have not received prior written approval
from Mendota.

NOTE: Minor warping of certain parts or discoloration is normal and is not a defect covered by this warranty. Major warping of parts
can be caused by over-firing of your Mendota Fireplace. O ver-fi ri ng above rat ed nameplate specific ation is as contrary to the manufac­turer's instructions and m ay void this warranty.
This warranty may not be extended by our representatives or any third part y in any manner. The company neither assumes, nor au­thorizes any third party to assum e, on its behalf, any other liabi l i t i es with respect to the sale of t hi s Mendota product.

3) Mendota may at its discreti on, fully discharge all obligat i ons of this warranty by refunding the wholesale price of t he defective part(s).

4) All other warranties - expressed or implied - with respect to the product, its c omponents and accessori es , or any obligation/liabiliti es on
the part of the company are hereby expressly excluded. P roduc ts made by other manufac turers, sold with the Fireplace or t hereafter,
are not covered by this limit ed warranty. T he us e of unauthorized components will make this warranty null and void.

5) It remains the full respons i bi l i t y of the owner to operate this appliance within the
guidelines provided in the Install ation Manual and the Operating Instruct i ons
Manual accompanying this appli anc e. Further, the owner shall bear full respon­sibility to enforce cl earances to combusti bl es requirements and cautioni ng oth­ers about hot glass surfaces and hot metal surf ac es. Owner, by operating this
appliance, accepts t hat this is a heat producing appli ance which has glass and
steel parts that are hot enough t o cause severe burns. Owner accepts that this
appliance requires close m oni toring of children and vulnerable individuals who
are in the vicinity of this appl i ance when this appliance is in operation. Mendota
does not assume or acc ept any liability claims for burns or other physical or
material damages res ul ting from touching hot gl ass surfaces and hot metal sur­faces that are part of thi s appliance or other adjacent object such as hearth
pads and mantels that may heat up during operation of this appl i anc e.

This warranty shall be effective only if the original purchaser of the Mendota appl i­ance is registered with Mendota Division within thirty (30) days of the date of pur­chase. Such registrat i on or the failure to register shall not be deemed to create any
obligation or liability by the manufacturer and this warranty with its c ondi tions and lim­itations shall be the only proc edure for obtaining any rights against t he manufacturer
and expresses the sole obligation and respons i bi l i ties of the manufacturer which are
offered to the original purchaser and ac cepted upon purchase of the appliance.

Mendota Division, reserves the right t o make changes at any time without notice, in design, material, specif i cations, prices and t he right to
discontinue styles and products.
Some states do not al l ow the exclus i on of l i mitation of inci dent al or consequential damages or li mitations on how long an impli ed warranty
lasts, so the above limitation or exclusion m ay not appl y t o you. T hi s warranty gives you specific legal rights and you may also have other
rights which vary from state t o state.

55

Johnson Gas Appliance Company
520 E Avenue N.W. - Cedar Rapids, IA 52405
Mendota Hearth Division
www.johnsongas.com or www.mendotahearth.com

85-03-00893

56