Mendota FV-41 Service manual

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FULLVIEW RECTANGLE DIRECT VENT GAS FIREPLACE HEATER
Model FV41
INSTALLATION INSTRUCTIONS MANUAL
DOCUMENT NO. FV41-IM-0610
In the Commonwealth of Massachusetts:
Installation must be performed by a licensed plumber or
gas fitter;
A CO detector shall be installed in the room where the
appliance is installed.
WARNING: Improper installation, adjustment, altera-
tion, service or maintenance can cause injury or prop-
erty damage. Refer to this manual. For assistance or
additional information consult a qualified installer, ser-
vice agency or the gas supplier.
CAUTION
THESE INSTRUCTIONS ARE TO REMAIN WITH
THE HOMEOWNER.
WARNING
If the information in this manual is not followed exactly, a
fire or explosion may result causing property damage,
personal injury or loss of life.
Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
WHAT TO DO IF YOU SMELL GAS
Open windows.
Do not touch electrical switches.
Do not try to light any appliance.
Extinguish any open flame.
Do not use the phone in your building.
Immediately call your gas supplier from a neighbor's
SKRQH)ROORZWKHJDVVXSSOLHU¶VLQVWUXFWLRQV
If you cannot reach your gas supplier, call the fire
department.
FOR YOUR SAFETY
A qualified installer, service agency, or the gas suppli-
er must perform installation and service.
Do not store or use gasoline or other flammable va-
pors and liquids in the vicinity of this or any other ap-
pliance.
WARNING
Do not operate this appliance with the glass removed,
cracked or broken. A licensed or qualified person
should do replacement of glass.
WARNING
Mendota gas fireplaces are heat producing appliances.
Do not burn wood, paper or other materials in this fire-
place. This fireplace is designed as a supplement
heat source. It is advisable to have an alternative pri-
mary heat supply.
WARNING
Do NOT use this appliance if any part has been under water.
Immediately call a qualified service technician to inspect the
appliance and to replace any part of the control system and
any gas control, which has been under water.
The installation must conform with local codes or, in
the absence of local codes, with the current National
Fuel Gas Code, ANSI Z223.1, or the current Natural
Gas and Propane Installation Code, CSA B149.1

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SAFETY AND WARNING INFORMATION
READ and UNDERSTAND all instructions carefully before starting the appliance. FAILURE TO FOLLOW these instruc-
tions may result in a possible fire hazard and will void the warranty.
Any safety screen or guard removed for servicing must be replaced before operating this appliance.
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 underwater.
THIS UNIT IS NOT FOR USE WITH SOLID FUEL.
Installation and repair should be PERFORMED by a qualified service person. The appliance and venting system should
be INSPECTED before initial use and at least annually by a professional service person. More frequent cleaning may be
required due to excessive lint from carpeting, bedding, material, etc. It is IMPERATIVE WKDW WKH XQLW¶V FRQWURO FRPSDUt-
ment, burners, and circulating air passageways ARE KEPT CLEAN to provide for adequate combustion and ventilation
air.
Always KEEP the appliance clear and free from combustible materials, gasoline, and other flammable vapors and liquids.
NEVER OBSTRUCT the flow of combustion and ventilation air. Keep the front of the appliance CLEAR of all obstacles
and materials for servicing and proper operation.
Due to high temperature, the appliance should be LOCATED out of traffic areas and away from furniture and draperies.
Clothing or flammable material SHOULD NOT BE PLACED on or near the appliance.
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
appliance.
These units MUST use one of the vent systems described in the Installing Your Fireplace section of the Installers Guide.
NO OTHER vent systems or components MAY BE USED.
This gas fireplace and vent assembly MUST be vented directly to the outside and MUST NEVER be attached to a chim-
ney serving a separate solid fuel-burning appliance. Each gas appliance MUST USE a separate vent system. Common
vent systems are PROHIBITED.
If the vent-air intake system is disassembled for any reason, reinstall per the instructions provided for the initial installa-
tion.
The vent system assembly for this fireplace must be periodically examined by a qualified service agency.
INSPECT the external vent cap on regular basis to make sure that no debris is interfering with the airflow. The flow of
combustion and ventilation air not to be obstructed
DO NOT abuse the glass door by striking the glass, slamming the door shut, etc.
Use only authorized parts and materials obtained from Johnson Gas Appliance Company when replacing defective or
damaged glass.
DO NOT USE abrasive cleaners on the glass door assembly. DO NOT ATTEMPT to clean the glass door when it is hot.
Turn off the gas before servicing this appliance. It is recommended that a qualified service technician perform an ap-
pliance check-up at the beginning of each heating season.
DO NOT place furniture or any other combustible household objects within 36 inches of the fireplace front.

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TABLE OF CONTENTS
SAFETY AND WARNING INFORMATION 2
SPECIFIC REQUIREMENTS FOR THE COMMON WEALTH OF MASSACHUSETTS 5
FV-41 FULL VIEW GAS FIREPLACE DIMENSIONS 6
TECHNICAL SPECIFICATIONS FOR FV-41 7
MINIMUM CLEARANCES TO COMBUSTIBLE CONSTRUCTION 7
MINIMUM COMBUSTIBLE ROUGH FRAMING DIMENSIONS 7
CONGRATULATIONS 8
BUILDING PERMIT AND INSTALLATION INSPECTION APPROVAL REQUIREMENTS 8
GENERAL APPLIANCE SPECIFICATIONS 9
MANTEL CLEARANCES 9
CLEARANCES TO COMBUSTIBLES FROM APPLIANCE SURFACES 11
PLANNING THE INSTALLATION 12
SELECTING APPLIANCE LOCATION 12
ROUGH FRAMING DIMENSIONS 13
CONSTRUCTING THE APPLIANCE CHASE 13
FRAMING DEPTH AND FINISHING GUIDES 14
FINISHING GUIDES 14
INNER GUIDE 14
OUTER GUIDE 14
FINISHING MATERIALS INSTALLATION 15
TILES AND FAUX ROCK 15
MARBLE AND GRANITE SLABS 15
HEARTH PROTECTION PAD REQUIREMENTS 16
GENERAL INFORMATION 17
SAFETY AND STRUCTURAL CONCERNS 17
VENTING REQUIREMENTS 17
HEATING PERFORMANCE 17
AESTHETIC CONSIDERATIONS 17
ELECTRICAL REQUIREMENTS 17
REMOTE CONTROL RECEIVER LOCATION AND MOUNTING REQUIREMENTS 17
GAS SUPPLY REQUIREMENTS 18
GAS SUPPLY LINE SIZING 18
GAS PRESSURE CHECKING REQUIREMENTS 18
GAS PRESSURE REQUIREMENTS 19
GENERAL INSTALLATION INSTRUCTIONS 20
HIGH ALTITUDE INSTALLATION INFORMATION 20
BLOWER OPERATION 20
OPERATION DURING POWER OUTAGES 20
BACKUP BATTERIES 20
GENERAL FLUE VENTING INSTRUCTIONS 21
COMPONENT "TWIST-LOCK" CONNECTION PROCEDURE 21
EXTERIOR VENT LOCATIONS AND RESTRICTIONS 22
FLUE VENTING COMPONENTS IDENTIFICATION 23
FV-41 MASTER FLUE VENTING REQUIREMENTS CHART 24
IMPORTANT VENTING CONFIGURATION NOTES 25
MAXIMUM HORIZONTAL RUN 25
MAXIMUM VENT SYSTEM LENGTH 25
HOW TO CALCULATE THE VENT SYSTEM LENGTHS 25
USING 900(/%2:6,1=21(³%´ 25
USING 900(/%%2:6,1=21(³$´ 25
USING 45-DEGREE ELBOWS 25
APPROVED VENT SYSTEMS 26
ZERO RISE HORIZONTAL TERMINATION 27
VERTICAL RISE HORIZONTAL TERMINATION 28
VERTICAL THROUGH-THE ROOF VENTING 30
VERTICAL THROUGH-THE-ROOF VENTING USING FOUR 900ELBOWS 32
TO REMOVE DOOR 33
TO REPLACE DOOR 33
INSTALLATION CHECK OFF LIST 34
LIGHTING CHECK OFF LIST 34
BLOWER SYSTEM INFORMATION 35

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FLAME APPEARANCE ADJUSTMENT 36
FLAME APPEARANCE ADJUSTMENT- AIR SHUTTER ADJUSTMENTS 36
FLAME APPEARANCE ADJUSTMENT- EXHAUST DAMPER ADJUSTMENTS 36
TROUBLE SHOOTING THE FV-41 FIREPLACE & MAINTENANCE INFORMATION 37
OVER FIRING OF BURNER 37
MAINTAINING CORRECT PILOT-FLAME, PILOT OUTAGE & RELIGHTING 37
CLEANING VIEWING GLASS 37
SOOTING 37
OPERATION DURING POWER FAILURE 37
GAS SHUTOFF PROCEDURE 37
MAINTENANCE 38
NATURAL TO LP GAS CONVERSION 39
Read Before Attempting NG to LPG Conversion 49
ORIFICE SIZES REQUIREMENT: 39
LP PRESSURE REGULATOR CONVERSION INSTRUCTIONS 40
LP GAS PRESSURE REQUIREMENTS 42
LPG PROPER INPUT RATES: 42
LEAK TESTING REQUIREMENTS 42
PILOT FLAME AND MAIN BURNER RELATIONSHIP VERIFICATION 42
PILOT FLAME LENGTH ADJUSTMENT 42
CHECKING FOR NORMAL BURNER (S) IGNITION CHARACTERISTICS 43
ATTACHING LPG CONVERSION LABELS AND HIGH ALTITUDE DERATION LABEL 43
FV-41 VALVE ASSEMBLY REPLACEMENT PARTS 44
FV-41 GAS IGNITION SYSTEM WIRING DIAGRAM 45
GLASS FRAME ASSEMBLY REPAIR AND REPLACEMENT 46
TO REPLACE DAMAGED GLASS 46
LISTING LABEL INFORMATION 47
MENDOTA WARRANTY QUALIFICATION & SERVICE REFERENCE FORM 48
MENDOTA EXTENDED LIFETIME PROTECTION AND LIMITED WARRANTY 51

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Specific Requirements for the Common Wealth of Massachusetts
The information in this section applies to all installations performed in the Common Wealth of Massachusetts only.
a) For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure
used in whole or in part for residential purposes and where the side wall exhaust vent termination is less than
seven (7) feet above grade, the following requirements shall be satisfied:
1. If there is no carbon monoxide detector with an alarm already installed in compliance with the most cur-
rent edition of NFPA 720, NFPA 70 and the Massachusetts State Building code in the residential unit
served by the side wall horizontally vented gas fueled equipment, a battery operated carbon monoxide
detector with an alarm shall be installed in compliance with the most current edition of NFPA 720. NFPA
70 and the Massachusetts State Building Code.
2. In addition to the above requirements, if there is not one already present, a carbon monoxide detector
with an alarm and a battery backup shall be installed and located in accordance with the installation re-
quirements supplied with the detector on the floor level where the gas equipment is installed. The carbon
monoxide detector with an alarm shall comply with 527 CMR, ANSI/UL 2034 Standards or CSA 6.19 and
the most current edition of NFPA 720. In the event that the requirements of this subdivision cannot be
met at the time of the completion of the installation of the equipment, the installer shall have a period of
thirty (30) days to comply with this requirement; provided, however, that during said thirty (30) day period,
a battery operated carbon monoxide detector with an alarm shall be installed in compliance with the most
current edition of NFPA 720, NFPA 70 and the Massachusetts State Building Code. In the event that the
side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the carbon
monoxide detector may be installed on the next adjacent habitable floor level. Such detector may be a
battery operated carbon monoxide detector with an alarm and shall be installed in compliance with the
most current edition of NFPA 720, NFPA 70 and the Massachusetts State Building Code.
3. A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a min-
imum height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally
vented gas fueled heating appliance or equipment. The sign shall read, in print size no less than one-half
LQFKLQVL]H³*$69(17',5(&7/<%(/2:.((3&/($52)$//2%6758&7,216´
4. A final inspection by the state or local gas inspector of the side wall horizontally vented equipment shall
not be performed until proof is provided that the state or local electrical inspector having jurisdiction has
granted a permit for installation of carbon monoxide detectors and alarms as required above.
(b) EXEMPTIONS: The following equipment is exempt from 248 CMR 5.08(2) (a) 1 through 4:
7KHHTXLSPHQWOLVWHGLQ&KDSWHUHQWLWOHG³(TXLSPHQW1RW5HTXLUHG7R%H9HQWHG´LQWKHPRVWFXUUHQW
edition of NFPA 54 as adopted by the Board; and
2. Product Approved side wall horizontally vented gas fueled equipment installed in a room or structure sepa-
rate from the dwelling, building or structure used in whole or in part for residential purposes.
(c) When the manufacturer of Product Approved side wall horizontally vented gas equipment provides a venting
system design or venting system components with the equipment, the instructions for installation of the
equipment and the venting system shall include:
1. A complete parts list for the venting system design or venting system; and
2. Detailed instructions for the installation of the venting system design or the venting system components.
(d) When the manufacturer of a Product Approved side wall horizontally vented gas fueled equipment does not
SURYLGHWKHSDUWVIRUYHQWLQJWKHIOXHJDVHVEXWLGHQWLILHV³VSHFLDOYHQWLQJV\VWHPV´WKHIROORZLQJVKDOOEHVa-
tisfied:
7KHUHIHUHQFHG³VSHFLDOYHQWLQJV\VWHP´LQVWUXFWLRQVVKDOOEHLQFOXGHGZLWKWKHDSSOLDQFHRUHTXLSPHQWLn-
stallation instructions; and
7KH³VSHFLDOYHQWLQJV\VWHPV´VKDOOEH3URGXFW$SSURYHGE\WKH%RDUGDQGWKHLQVWUXFWLRQVIRUWKDWV\s-
tem shall include a parts list and detailed installation instructions.
(e) A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equip-
ment, all venting instructions, all parts lists for venting instructions, and/or all venting design instructions shall
remain with the appliance or equipment at the completion of the installation.

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FV-41 FULL VIEW GAS FIREPLACE DIMENSIONS
OVERALL APPLIANCE DIMENSIONS AND FEATURES
VISIBLE GLASS AREA
26-1/4" X 29-1/2"
[775 sq. in.]
STANDING PILOT
LIGHT SWITCH
ACCENT LIGHT HOUSING
CONTROLS ACCESS
& INSPECTION PLATE
5"x8" COAXIAL
STARTER COLLAR
EXHAUST DAMPER
ADJUSTMENT
REAR BURNER
AIR SHUTTER
CONTROL
FRONT BURNER
AIR SHUTTER
CONTROL
110VAC
INLET
CONTROLS
HARNESSES
EXIT
GAS SUPPLY
INLET (1/2"MNPT)
GAS TRAIN,
IGNITION SYSTEM,
RH BLOWER
INSPECTION COVER
LH FRAMING
ATTACH
BRACKETS
LH LIFT
HANDLE
RH FRAMING
ATTACH
BRACKETS
RH BLOWER
INSPECTION
COVER
LIFT
HANDLE
5"X8" COAXIAL
VENT STARTER
COLLAR
HEAT TRANSFER
DUCTS CONNECTION
PORTS
Serial # and
Lighting Instructions
PlateS
8 1/16 in
19 5/8 in
20 9/16 in
23 15/16 in
9 1/16 in
19 5/8 in
10 1/8 in
8 1/16 in
19 3/16 in
19 3/16 in
4 7/8 in
4 7/8 in
13 13/16 in
6 3/8 in
32 1/2 in
43 1/16 in
40 3/8 in
39 1/4 in
19 3/16 in
36 3/16 in
43 1/16 in
35 in

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TECHNICAL SPECIFICATIONS FOR FV-41
MODEL FV41
High Fire - Adjustable to - Low Fire
BTUH. (MODEL FV-41) NAT. GAS 40,000 13,000
BTUH. (MODEL FV-41) LP GAS 40,000 15,000
NOTE: LPG CONVERSION KIT, #New #, MUST BE PURCHASED SEPARATELY TO
CONVERT TO BURN LPG IN THIS FIREPLACE.
MAIN ORIFICE [0-2000ft (610 m)]: REAR BURNER: #42 NG [#54 L.P.] ±FRONT BURNER: #42 NG [#54 LP]
........................[2000-4500ft (610-1370 m)]: REAR BURNER: #43 NG [#55 L.P.] ±FRONT BURNER: #43 NG [#55 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: ................................... 225 POUNDS
SAFETY: ................................................ AGA/CECERTIFIED IPI AUTO ELECTRONIC IGNITION SYSTEM
ACTIVATED WITH THERMOSTATIC REMOTE CONTROL.
APPLIANCE CERTIFICATION AND TESTING AGENCY
INTERTEK TESTING SERVICES, ICBO#AA647-4
Certified under ANSI Z21.88 (2005) CSA 2-33 (2005³9HQWHG*DV)LUHSODFH+HDWHUVQRWIRUXVHZLWKVROLGIXHO$SSURYHGIRUEHd-
room installations and mobile homes. UL307B approved for "mobile homes, after first sale of home, not for recreational vehicles."
GAS REQUIREMENTS.......................... SUPPLY PRESSURE: GAS INLET: 1/2" N.P.T.
NAT. GAS: 7" W.C. (5" W.C. MIN., 11" W.C. MAX.)
L.P. GAS: 11.0" W.C. (11" W.C. MIN., 13" W.C. MAX.)
ELECTRICAL REQUIREMENTS........... 115 VOLT, LESS THAN 1.5 amps (for blower operation only)
APPROVED VENT SYSTEMS............... DURAVENT, SELKIRK, AMERIVENT, SECURITY
MINIMUM CLEARANCES TO COMBUSTIBLE CONSTRUCTION
UNIT TO FLOOR 0in. (0mm) GLASS EDGE TO ADJACENT SIDEWALL 18in. (457 mm)
UNIT TO ENCLOSURE SIDEWALL 1/2in. (13mm) VENT PIPE TOP TO COMBUSTIBLES 2in. (51mm)
UNIT TO ENCLOSURE BACK WALL 1/2in. (13mm) VENT PIPE SIDES TO COMBUSTIBLES 1in. (25mm)
UNIT BOTTOM TO ENCLOSURE CEILING 48-1/2in. (123 cm) VENT PIPE BOTTOM TO COMBUSTIBLES 1in. (25mm)
UNIT BOTTOM TO ROOM CEILING 72 in. (1829 mm)
´0$17/($%29(',6&+$5*($,523(1,1* 18 in. (457 mm)
MINIMUM COMBUSTIBLE ROUGH FRAMING DIMENSIONS
WIDTH = 42-1/2´8cm) HEIGHT = 47´(110cm) DEPTH = 19-3/16´(49cm)
THIS FIREPLACE INCLUDES A SEALED COMBUSTION SYSTEM, 8-PIECE CERAMIC FIBER LOG SET & COALS, FIREBRICK
LINED FIREBOX, NEO-CERAM GLASS, ELECTRONIC IGNITION SYSTEM, DUAL BLOWERS, AGA CERTIFIED SAFETY SYSTEM,
ACCENT LIGHT and THERMOSTATIC REMOTE CONTROL.
OPTIONS: BLACK, VINTAGE IRON, SWEDISH NICKEL, ANTIQUE GOLD, ANTIQUE COPPER HOMESTEAD & WILLOW DOORS,
DUCHESS STAINED GLASS FRONT, BOULEVARD DOORS, SERENADE AND PORTRAIT TRIMS and other accessories.
CAUTION
THESE INSTRUCTIONS ARE TO
REMAIN WITH THE HOMEOWNER.
NOTE: This installation must conform to local codes. In the absence
of local codes, you must comply with the National Fuel Gas Code,
ANSI Z223.1-latest edition in the U.S.A. and the Natural Gas and
Propane Installation Code, CSA B149 Installation Codes in Cana-
da.
This appliance may be installed in an
aftermarket, permanently located,
manufactured home (USA only) or
mobile home, where not prohibited
by local codes.
This appliance is only for use with
the type(s) of gas indicated on the
rating plate.
WARNING: Do not operate this appliance with the glass removed,
cracked or broken. A licensed or qualified person should do re-
placement of glass.
HIGH ALTITUDE INSTALLATION INFORMATION: Prior to installing at altitudes higher than 7500, please con-
tact the Mendota technical service department for specific venting requirements and venting restrictions.

8 | Page
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 HearthGlo wood fire-like combustion system.
Carefully read the following instructions prior to actual installation. Proper Mendota Gas Fireplace installation and opera-
tion will give you years of safe, trouble free comfort and enjoyment.
If you have any questions regarding installation or operation of your Mendota Fireplace please contact your local dealer.
...CAUTION...
Due to high temperatures, the Fireplace should be located out of traffic and away from furniture and draperies. Children
and adults should be alerted to the hazards of high surface temperature and should stay away to avoid burns or clothing
ignition. Young children should be carefully supervised when they are in the same room as the Mendota Gas Fireplace.
Clothing or other flammable material should not be placed on or near the Fireplace.
Any safety screen or guard removed for servicing an appliance must be replaced prior to operating this appliance.
The Mendota Gas Fireplace is a powerful and efficient heating unit. It has been designed as a major source of supple-
mental 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 appliance
should be inspected before use and at least annually by a professional service person. More frequent cleaning may be
required due to excessive lint from carpeting, bedding material, carbon build-up, etc. It is imperative that control com-
partments, burners and circulating air passageways of the appliance be kept clean. The burner and pilot flames and logs
should be visually checked periodically.
DO NOT use this appliance if any part has been under water or exposed to moisture corrosion. Immediately call a quali-
fied 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 ap-
proved 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 em-
ployees or representatives for any damages caused by an inoperable, inadequate, or unsafe condition which is the result,
either directly or indirectly, of any improper operation, installation or servicing procedures.
Building Permit and Installation Inspection Approval Requirements
All installations of Mendota Fireplaces and Inserts must comply with all the requirements stated in this Installation and
Operating Instructions Manual. The Dealer and/or installer must also obtain all required Building Permits and Inspection
Approval from the local building inspection department or the local body having jurisdiction. In order to validate warranty
coverage, Mendota may require facsimile copies of the Building Permit and Inspection Approval forms. Failure to provide
adequate proof that the installation conforms to all local requirements and the requirements stated in the Installation and
Operating Instructions Manual will void all applicable warranty.
INSTALLER: THESE INSTRUCTIONS ARE TO REMAIN WITH HOMEOWNER.
HIGH ALTITUDE INSTALLATION INFORMATION: Prior to installing at altitudes higher than 7500, please con-
tact the Mendota technical service department for specific venting requirements and venting restrictions.

9 | Page
FV41 DIRECT VENT GAS FIREPLACE
GENERAL APPLIANCE SPECIFICATIONS
HIGH ALTITUDE INSTALLATION INFORMATION: Prior to installing at altitudes higher than 7500, please contact the
Mendota technical service department for specific venting requirements and venting restrictions.
19-1/2" MIN.
DEPTH
9" TO VENT
PIPE CENTER
321
8"
NON-COMBUSTIBLE ZONE
18" min. Non-combustible Hearth
protection required [SEE HEARTH
PROTECTION PAD R-RATING, PAGE 12]
11
2" HEARTH PAD HEIGHT
(MIN R-1 RATING)
IS REQUIRED!
421
2" MIN
OPENING WIDTH
48" MIN.
UNIT BASE
TO 8" MANTEL
8" MANTEL DEPTH
AT HEIGHTS SHOWN
72" MIN.
TO
ROOM CEILING
CEILING
47" MIN.
ROUGH FRAMING
HEIGHT
421
2" MIN.
ROUGH FRAMING WIDTH
0"
6"
7"
8"
9"
10"
11"
12"
13"
HEIGHT ABOVE
CONVECTION AIR OPENING
DISTANCE FROM
FIREPLACE FACE
42-1/2"
TO CENTERLINE
OF VENT CAP
24" MIN
TO VINYL SOFFIT
(18" MIN TO WOOD
OR METAL SOFFIT)
14"
15"
513
16"
61
4"
611
16"
0"
16"
TO GUIDE EDGE
MINIMUM ROUGH FRAMING DIMENSIONS
HEIGHT 47"
WIDTH 42-1/2"
DEPTH 19-1/2"
FROM UNIT BASE
TO ROOM CEILING 72"
FROM UNIT BASE
TO 8" MANTEL 48"
ADJACENT WALLS:
A wall perpendicular to and in front of this fireplace's
glass door surface must be at least 16 inches from the
side edges of the facing guide.
A wall at 45° to the glass surface and starting at this
Fireplace's outer edge is permitted. Projections behind
this wall (in shaded area) are permitted.
493
4"
493
4"
70 5
16"
1711
16"
1711
16"
71
8"79
16"8"
16"
17"
18"
4747" MIN.
35-1/2"
347
8"
191
8"
FROM UNIT BASE TO
UNIT ENCLOSURE CEILING 50"
50" MIN.
UNIT FLOOR
TO ENCLOSURE
CEILING
1"
2"
3"
4"
5"
55
16"
47
8"
47
16"
4"
39
16"
31
8"
211
16"
21
4"
113
16"
13
8"
15 16"
1
2"
NON COMBUSTIBLE FACING
NOTE: For every 1" this fireplace is raised off the floor,
the non-combustible hearth protection pad may be reduced
by 2". If this fireplace is raised off the floor more than 6",
No hearth protection pad is required.
FIREPLACE FACE MUST BE COVERED W/
NONCOMBUSTIBLE FACING IN THIS AREA.
A COMBUSTIBLE MANTEL ONLY ALLOWED IN
THIS AREA IF INSTALLED OVER
NON-COMBUSTIBLE FACING MATERIAL.
CAUTION: The distance from floor level to the centerline of the vent
cap is given based on Simpson Duravent GS components. If using
vent components of other brands do not assume that the
measurement given here is applicable. Verify the distance to
centerline of vencap by measuring the components you will be using.

10 | Page
MANTEL CLEARANCES
Mantel Clearances for this fireplace may be measured from the top of the convection air opening or the floor level of
this fireplace.
The location that is referenced normally to measure mantel clearances is the Top of the Convection Air Opening. For
ease, however, measure up from the floor level of this fireplace. The chart and diagram, in this page, provide all the refer-
ence dimensional information necessary in determining the distance a combustible mantel may protrude out from the face
surface of this fireplace. The Chart, at right, shows the Distance from Fireplace Face the combustible mantel may pro-
trude outward at a Distance up From Floor Level of this Fireplace.
If you prefer to take measurements from the Top of the Convection Air Opening, note that the Top of the convection air
opening is 30 inches up from the floor level of this fireplace.
WARNING: Make proper use of this chart. Do not compromise the specifications contained in this chart.
Failure to adhere to proper clearances required to combustibles may cause spontaneous combustion of the mantel and
may result in a fire causing property damage, personal injury or loss of life.
Figure 1: Mantel Clearances
NON-COMBUSTIBLE ZONE
FIREPLACE FACE MUST BE COVERED W/ NONCOMBUSTIBLE FACING IN THIS AREA.
A COMBUSTIBLE MANTEL ONLY ALLOWED IN
THIS AREA IF INSTALLED OVER
NON-COMBUSTIBLE FACING MATERIAL.

11 | Page
CLEARANCES TO COMBUSTIBLES FROM APPLIANCE SURFACES
Figure 2: Clearances to Combustibles
0" CLEARANCE
FROM TOP STANDOFFS
1
/2" CLEARANCE
FROM BACK
1/2" CLEARANC
E
FROM SIDES

12 | Page
PLANNING THE INSTALLATION
When planning on appliance installation, it is necessary to determine the following information before installing:
Where the appliance is to be installed.
The vent system configuration to be used.
Gas supply piping.
Electrical Wiring.
Framing and finishing details.
Hearth Protection Pad Requirements.
Whether accessories such as a wall switch, remote control, and ceiling fan are desired.
Selecting Appliance Location
When selecting a location for your appliance, it is important to consider the required clearances to walls. See Error! Ref-
erence source not found. and Figure 2: Clearances to Combustibles.
Figure 3: Planning Installation
WARNING
FIRE RISK- ODOR RISK
Install appliance on hard metal or wood surfaces extending full width and depth of this fireplace.
An R-1 Rated Hearth Protection Pad [1-´7KLFN0D[LPXP@LVUHTXLUHGXQOHVVWKLVILUHSODFHLVHOHYDWHG
)RUHYHU\´WKLVILUHSODFHLVHOHYDWHG\RXPD\UHGXFHWKHKHDUWKSDGGHSWKE\´,IWKLVILUHSODFHLVHOe-
YDWHG´RUKLJKHUQRKearth protection pad is required.
Do NOT install this fireplace directly on carpeting, vinyl or any combustible material other than wood. Con-
struct chase to all clearance specifications in manual.
Locate and install appliance to all clearance specifications in manual.
703
4"
513
8"
18"
173
4"
251
4"
191
2"
In addition to these dimensions, also reference:
Mantel Clearances Section
Framing Dimensions Section
Venting Configuration Section
19-1/2"
MIN.
353
8"
42-1/2" MIN.
42-1/2 MIN.
ROUGH FRAMING
WIDTH
42-1/2 MIN.
ROUGH
FRAMING WIDTH

13 | Page
ROUGH FRAMING DIMENSIONS
Rough Framing Dimensions
The Rough Framing Dimensions must be main-
tained to allow this fireplace to slide into the fram-
ing cavity with a 900elbow installed on the top
starter collar. After the FV-41 Fireplace is inserted
into the rough framed cavity, install one 2x4 on
HDFKVLGHDGMDFHQWWRWKHVLGHRIWKLVILUHSODFH¶V
body and one 2x4 on top of the top framing stan-
doffs to close the air gap and to act as nailing
studs for finishing materials.
If the fireplace is to be recessed in a cavity deeper than 19-´DOOIUDPLQJDQGILQLVKLQJPDWHULDOVSURWUXGLQJSDVWWKH
front face of this fireplace must be of the NON-COMBUSTIBLE variety.
Constructing the Appliance Chase
A chase is a vertical box-like structure built to enclose this fireplace and its vent system. Vertical vents that run on the
outside of a building may be, but are not required to be, installed inside a chase.
Construction of the chase may vary with the type of building. These instructions are not substitutes for the requirements of
local building codes. Local building codes MUST be adhered to.
Chases should be constructed in the manner of all outside walls of the home to prevent cold air drafting problems. The
chase should not break the outside building envelope in any manner.
Wall, ceiling, base plate and cantilever floor of the chase should be insulated. Vapor and air infiltration barriers should be
installed in the chase as per regional codes for the rest of the home. Additionally, in regions where cold air infiltration may
be an issue, the inside surfaces of the chase may be sheet rocked and taped for maximum air tightness.
To further prevent drafts, the fire stops should be caulked with high temperature caulk to seal the gaps. Gas line holes
and other openings should be caulked with high temp caulk or stuffed with unfaced insulation. If the appliance is being
installed on a cement slab, a layer of plywood may be placed underneath this fireplace to prevent conducting cold up into
the room.
Minimum Rough Framing Dimensions
DESCRIPTION DIMENSION (INCHES)
A Width 42-´
B Height 47´
C Depth 19-1/2´´*UDQLWH0DUEOH)DFLQJ
D Vent opening height 10-´
E Vent opening width 10-´
Figure 4: FINALIZED Framing Dimensions
19-1/2"
MIN. DEPTH
42-1/2"
FLOOR TO
WALL THIMBLE
CENTER
39-1/4"
FINALIZED
WIDTH
43-3/16"
FINALIZED
HEIGHT
REMOTE RECEIVER
MOUNTING BOX
(2-GANG BOX)

14 | Page
INNER FINISHING
GUIDES(TOP, L &R)
OUTER FINISHING
GUIDES (TOP, L & R)
FRAMING DEPTH and FINISHING GUIDES
The framing depth for this fireplace
is 19-1/2 inches. This is a fixed
depth required for all installations,
except a corner installation and for
installations that use solid Granite
or Marble slabs as fascia materials.
For corner installations, see figures
1 and 4.
For installing solid Granite or Mar-
ble slabs as fascia material, reduce
WKHIUDPLQJGHSWKE\ò´WKHQLQVWDOO
ò´WKLFNGU\ZDOORQWKHIUDPLQJ
studs so that the drywall is flush
with the front face of this fireplace.
Install the Granite or Marble slab so
that it adheres to the face of the
fireplace and the drywall.
Finishing Guides
Two sets of Finishing Guides are
supplied with this fireplace: One set
is called the Outer Guide and the
other set is caOOHGWKH,QQHU*XLGH%RWKJXLGHVSURWUXGHRXW´IURPWKHIDFHRIWKLVILUHSODFH%RWKJXLGHVDUHIDFWRU\Ve-
FXUHGXVLQJVFUHZVDQGPD\EHUHPRYHGLIQRWQHHGHGRUPD\EHSHUPDQHQWO\DWWDFKHGXVLQJ´ULYHWVWKDWDUHVXSSOLHG
with this fireplace.
Inner Guide: Identify the Inner Finishing Guides (Top,
Left and Right). These guides should be used as a
guide for finishing materials if you are planning to in-
stall WKLVILUHSODFHDVD³)8//9,(:´ZLWKRXWDQ\Ge-
corative front or if you are planning to install a
³%28/(9$5''225.,7´³'8&+(6667$,1('
*/$6629(5/$<´³32575$,7*/$66)5$0(
29(5/$<´or a ³6(5(1$'(*/$66)5$0(
29(5/$<´. Remove and discard the Outer Guides
(Top and sides) if you plan to use the Inner Guides.
Outer Guide: Identify the Outer Finishing Guides (Top, Left and Right). These guides should be used as a guide for fi-
QLVKLQJPDWHULDOVLI\RXDUHSODQQLQJWRLQVWDOOD³+20(67($'´ or ³:,//2:´GRRUNLWRQWKLV fireplace. Remove and dis-
card only the Inner Guides (Top and Sides only) if instalOLQJD³:,//2:´RU³+20(67($'´GRRUNLWDQG\RXSODQWRXVH
the Outer guides.
FV-41 DECORATIVE FRONTS
-FINISHING GUIDES SELECTION-
-WILLOW-
USE
OUTER GUIDE
-HOMESTEAD-
USE
OUTER GUIDE
-BOULEVARD-
USE
INNER GUIDE
-DUCHESS-
USE
INNER GUIDE
-SERENADE-
USE
INNER GUIDE
-PIONEER-
USE
INNER GUIDE
DECORATIVE FRONT TYPE INNER GUIDE
OUTER GUIDE
FULL VIEW/ NO FRONT USE
DISCARD
BOULEVARD DOOR KIT USE
DISCARD
DUCHESS OVERLAY USE
DISCARD
SERENADE OVERLAY USE
DISCARD
PORTRAIT OVERLAY USE
DISCARD
WILLOW DOOR KIT DISCARD
USE
HOMESTEAD DOOR KIT DISCARD
USE

15 | Page
FINISHING MATERIALS INSTALLATION
All finishing PDWHULDOVWKDWVXUURXQGWKLVILUHSODFH¶Vrectangle profile must extend out from the face surface of this fireplace
1 inch.
Tiles and Faux Rock
If installing Tiles or )DX[5RFNILUVWLQVWDOODò´WKLFN (minimum) Cement Board (Hardibacker or Durock Brand) over the
face of the fireplace and framing members. Follow by applying Thinset mortar (no polymer additives) XVLQJó´VTXDUH
notched trowel on the cement board surface. Finally, install tile to reach a finish material depth of 1 inch.
Marble and Granite Slabs
If installing Marble or Granite slabs as fascia materials, specify that the inner edges that will be adjacent to the Glass Door
DUHSROLVKHG5RXJK)UDPLQJVKRXOGEHFUHDWHGDW´GHSWKZLWKWKHIURQWVXUIDFHRIWKLVILUHSODFHSURWUXGLQJRXWò´IURP
WKHIUDPLQJVXUIDFH,QVWDOO´WKLFNGU\ZDOl on framing members so that its outer surface is flush with the front face of
this fireplace. Attach Marble or Granite slabs to face of unit and to drywall surface using adhesive that does not offgas
when hot.
,QWKHDUHDGHILQHGDV³121&20%867,%/(=21(´ [FIGURE 7], only NONCOMBUSTIBLE MATERIALS ARE
ALLOWED.
When this fireplace is installed in a framed cavity that is 19-1/2´GHHSWKHIDFLQJPDWHULDOILQLVKLQJJXLGHZLOOSUo-
trude out into the room 1 inch. Build finishing materials to 1 inch thickness and use the built-in guides for edge
alignment of fascia material. &RQVXOWVHFWLRQ³)5$0,1*'(37+DQG),1,6+,1**8,'(6´
WARNING: See Figure 7. The cross hatched areas labeled as
³121&20%867,%/(=21(´PXVWEHFRYHUHGZLWKQRncom-
bustible finishing materials that is 1-inch thick, minimum. DO
NOT ALLOW COMBUSTIBLE MATERIALS TO ENCROACH IN
THIS AREA!
NON-COMBUSTIBLE ZONE
[ALL HATCHED AREAS]
1.00 INCH
FACE OF
FV-41
1" FINISHING
GUIDE
SCALE 0.26 : 1
DETAIL B
Figure 6:
NON COMBUSTIBLE ZONE [ALL HATCHED AREAS]

16 | Page
18" min. Non-combustible Hearth
protection required [SEE HEARTH
PROTECTION PAD R-RATING, PAGE 12]
11
2" MAX. THICK HEARTH PAD
(MIN R-1 RATING) IS REQUIRED!
NOTE: For every 1" this fireplace is raised off the floor,
the non-combustible hearth protection pad may be reduced
by 2". If this fireplace is raised off the floor more than 6",
No hearth protection pad is required.
FRONT
FIGURE 8
HEARTH PROTECTION PAD REQUIREMENTS
Hearth Protection R Rating: MINIMUM R-,65(48,5('86(2)$ò´7+,&.0,1,080&(0(17BOARD (Hardi-
EDFNHU:RQGHUERDUGRURWKHUEUDQGSOXVó´WKLFNPRUWDU7KLQ6HWW\SHSOXVó´WKLFNFHUDPLFWLOHH[FHHGWKH5-1 re-
TXLUHPHQW8VHWKLVDVDUHIHUHQFHLILQGRXEW1DWXUDO6WRQHVRI´RUJUHDWHUWKLFNQHVVDOVRH[FHHG5-1 rating.
Hearth Pad Guide- [Usage and Removal]
This fireplace is shipped with a Hearth Pad Guide Installed. The purpose of
the Hearth Pad Guide is to limit the height of the Hearth Pad during instal-
lations. DO NOT build a Hearthpad that is more than 1-´WKLFN'RLQJ
so will not allow installation of decorative fronts on this fireplace. After the
Hearthpad is built, remove the Hearth Pad guide and discard if you do not
wish the guide to be visible. In some instances, you will want the guide left
permanently, based on your aesthetic judgment.
To remove the Hearth Pad Guide, first remove the Glass Frame. Identify
the plastic Rivet heads inside the fireplace body. Use a sharp utility knife to
pry or cut the plastic rivet head and rivet base. Lift the Hearth Pad Spacer
upwards and remove.
This fireplace may be installed in an elevated position by created an
elevated deck and an appropriate framed enclosure. NOTE: This
ILUHSODFHPD\EHHOHYDWHGEXW0867DOORZDPLQLPXPRI´GLs-
WDQFHEHWZHHQWKLVILUHSODFH¶VIORRUOHYHODQGWKHFHLOLQJ
All hearth pads must be non-combustible (metal, brick, stone, or
mineral fiberboard). Do not use any combustible material to
protect the floor in front of this fireplace. For the FV-41, the
hearth protection pad must be rated at R-1 minimum AND it
must extend 18 inches in front of the fireplace face if the FV-
41 fireplace is installed at floor level.
Use the following procedure to determine if a hearth pad meets
the requirements listed in this manual. Find the available values,
R, K or C and follow the formulae below to arrive at a R value.
R-value = Thermal Resistance
K-value = Thermal Conductivity
C-value = Thermal Conductance
Convert the specification to R-value;
a. If R-value is given, no conversion is needed.
b. If K-value is given with for a thickness (t) in inches:
T
K
R1
...( 1 divided by K , then multiplied by thickness).
c. If C-value is given:
C
R1
«GLYLGHGE\&
Determine the R-value of the proposed hearth pad. For multiple
layers, add R-values of each layer to determine overall R-value. If
the overall R-value of the system is greater than R-1, then the
proposed hearth pad is acceptable.
Example:
Required minimum R value for hearth protection pad is R=1. The
SURSRVHGDOWHUQDWLYHLV´WLOHZLWKD&- facWRURIRYHU´
mineral board with a K-factor of 0.29. Determine if the proposed
layers will provide the minimum R=1 rating.
Step A.Use formula to convert C-IDFWRURIWKHó´WLOHWR5-value.
R of the tile:
C
R1
= 1/1.25 = 0.80
Step B. Use formula to convert K-factor of mineral board to R-
value.
R of mineral board:
T
K
R1
=1/0.29 x 0.125 = 0.431
Step C. $GG5YDOXHVRIó´7LOHDQGPLQHUDOERDUGWRJHWWKH
Total R-value of proposed alternative:
RTotal = Rtile + Rmineral board = 0.8 + 0.431 = 1.231.
Step D. Compare proposed system R = 1.231 to required R
of 1.0. Since R of proposed system is greater than the
required R=1, the proposed system is acceptable.
PRY or CUT RIVET HEAD USING A SHARP EDGE.
REPEAT FOR 4 RIVETS.
Figure 7:

17 | Page
GENERAL INFORMATION
Your Mendota Gas Fireplace has a state-of-the-art co-axial direct vent, sealed combustion system. This advanced and 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 in today's "air-tight" homes.
SAFETY AND STRUCTURAL CONCERNS:
The FV41 Fireplace must be installed and serviced by a Mendota approved serviceperson. Any adjustments to burner, pilot,
logs or coal bed must be made by a Mendota approved service person. If pilot goes out, always wait five (5) minutes before
attempting to relight pilot.
VENTING REQUIREMENTS:
This Mendota Fireplace can be vented using any available brand DIRECT VENT FRD[LDOSLSH´;´RIIWKHWRS8VHRQO\
Mendota specified vents and vent caps when installing your fireplace. Closely follow venting locations, directions and require-
ments. Observe the restrictions relating to vent position on exterior of home (see Figure 12). Be sure all vent pipe sections are
fully twist-locked and leak-proof. Be sure 1000ºSilicate Stove Sealant is used on the inner pipe joints of all Simpson DuraVent
pipe components and all adjustable pipe sections.
The Mendota Direct Vent Fireplace may be placed within 18 inches of adjacent sidewalls. 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. An ´
combustible mantel may be installed at a minimum of 18" above top of the heat outlet (48´ up from the floor level of this fire-
place) and no more than 8" out from wall at that height. Non-combustible (marble, brick, stone, etc.) mantels can be installed at
any desired height above the top convection air opening. Combustible Mantels of any depth with a sheet metal protector plate in
its under-side may only be installed outside WKH³121-&20%867,/%(=21(´DERYHWKHWRSFRQYHFWLRQDLURSHQLQJ
Never block off convection air openings or paths. Always use Mendota decorative fronts and Mendota approved vent systems
and vent caps.
A non-combustible hearth protector with a total insulation rating of R-1 is required when installing this fireplace directly on the
floor and must extend a minimum of 18" in front of the fireplace. For every 1 inch the fireplace is raised off the floor, the depth of
the hearth protector may be reduced by 2 inches. If fireplace is raised off the floor 6" or more, no hearth protector is required.
HEATING PERFORMANCE:
With its high heat output this Mendota Fireplace will heat a large area of your home if located properly to maximize heat/ air cir-
culation. Air movement options for maximizing heat circulation that can be considered are the continuous operation of central
heating furnace blowers or ceiling fans. The most efficient method for overall heat distribution within a single room is a
ceiling fan. The heat output of the Fireplace can be reduced to a low 13,000 BTUH by turning off the Rear Burner and reducing
flame height using the remote control. Blower can be turned down or turned off 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. We suggest installing this Mendota Fireplace a minimum of 12 inches above
the floor by utilizing an elevated hearth. This fireplace may be installed in an elevated position as long as 72 in. minimum dis-
WDQFHLVSURYLGHGEHWZHHQWKHIORRUOHYHORIWKLVILUHSODFHDQGWKHURRP¶VFHLOLQJVXUIDFH
ELECTRICAL REQUIREMENTS:
Electronic Ignition System, Dual Blowers and an Accent Light system are
included in this Mendota Direct Vent Fireplace. These devices require
constant electrical power except during power outages. A 115-volt elec-
trical service must be supplied at the fireplace location at the time of in-
stallation, on the left side of this fireplace. It must be electrically
grounded in accordance with local codes, or in their absence, with the
current edition of the National Electric Code ANSI/NFPA 70. Use of a
wall switch control in the power supplied to this fireplace is allowed.
Thermostatic function is included in the Remote Control Transmitter.
Therefore, no Thermostat wire is required.
REMOTE CONTROL RECEIVER LOCATION AND MOUNTING
REQUIREMENTS
A remote control receiver, a double-gang box and a 10 foot long wire
harness are supplied with this fireplace. Plan for mounting the double-
gang box at 4 feet above floor level on the left side of this fireplace. Posi-
tion remote receiver about 24 inches on the left side of the fireplace. Do
not attempt to locate the receiver on the right side and do not route the
10 foot cable on top of this fireplace. The heat on top of this fireplace will
damage the 10 foot cable if you route the cable to the right side.
39-1/4"
FINALIZED
WIDTH
43-3/16"
FINALIZED
HEIGHT
REMOTE RECEIVER
MOUNTING BOX
(2-GANG BOX)

18 | Page
FRONT
110VAC INLET
14-2 CABLE REQ'D
GAS LINE INLET
1/2" FNPT REQ'D
12 1
16
915
16
141
4
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 instal-
ling 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.
Correct gas pressure and proper gas supply line
sizing is required.
GAS SUPPLY LINE SIZING
This Mendota Gas Fireplace comes equipped with a 1/2"
N.P.T. Female inlet. Gas supply piping must enter the
Fireplace cabinet on the left side.
An approved manual shut-off ball valve, as required by
local codes must be installed at an accessible location.
The appliance and its individual shut-off valve must be dis-
connected from the gas supply piping system during any
pressure testing of that system at test pressures in excess
of ½ PSIG (3.5 kPa).
The appliance must be isolated from the gas supply piping
system by closing its manual shut-off ball 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.
PIPE LENGTH
(FEET)
SCHEDULE 40 PIPE
INSIDE DIA.
TUBING, TYPE L
OUTSIDE DIA.
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)
NOTE: Some areas allow coated stainless steel (CSST), copper tubing or galvanized pipe - check with local ap-
proval agencies and codes. NEVER use plastic pipe.
GAS PRESSURE CHECKING REQUIREMENTS
Inlet and manifold gas pressure checking taps are located on gas valve. Perform inlet and outlet pressure tests before
completing the facing installation. Remove valve access cover box on left side of fireplace to access the gas valve and all
control components.
A qualified installer shall take pressure measurements at these ports to verify and set the correct inlet gas pressures dur-
ing initial installation. Outlet gas pressures are factory-set and cannot be field adjusted.
NOTE: Check for gas leaks with soap and water solution on all factory joints and field installed joints during first firing of
this appliance.
Figure 8: Gas Supply
and Electrical Supply
Inlets Locations
WARNING: Never use any type of pipe thread sealants or compounds on the seats of flare or compression connections.

19 | Page
GAS PRESSURE REQUIREMENTS
One of the main causes of operating problems with gas appliances can be improper gas pressure!
Problems such as changes in flame color or configuration, gas pilot or burner outages, intermittent operation, changes in
heat output, excessive burner noise, etc. are nearly always the result of changes in gas pressure or improper gas pres-
sure at the time of the installation. The most important item to check during initial installation and the first thing to check
when problems occur are the input and output gas pressures!
Gas is normally supplied to a residence at 1/2 PSI (13" - 15" W.C.) (3 KPA). A pressure regulator is then placed outside
the residence, near the gas meter, which drops this pressure to 7" W.C. (1.8 KPA) (Nat. Gas). This "inches to inches"
regulator is of adequate capacity to service the gas appliances (such as dryer, furnace, etc.). If this regulator's capacity is
not sufficient to add the Gas Fireplace, an additional "inches to inches" regulator must be installed for the Fireplace.
EXCEPTION: Some codes allow 2-PSI (1.4KPA) supplies to enter the residence, in which case "pounds to inches" regula-
tors are used.
The following table provides information on correct gas pressure requirements. Be sure your gas supplier or plumber
carefully follows this table.
GAS PRESSURE REQUIREMENTS
NOTE: For altitudes above 2.000 feet some variations in air shutter settings may be required.
Manifold pressure must EH WDNHQ DW WKH ³OUTPUT PRESSURE" tap and inlet pressure at the "INLET PRESSURE" tap
with the burner operating by a qualified installer. Perform pressure tests prior to installing facia material around this fire-
place.
DESIRED
INLET
PRESSURE
MINIMUM
INLET
PRESSURE
MAXIMUM
INLET
PRESSURE
MANIFOLD
OUTLET
PRESSURE
AIR SHUTTER
POSITION*
NATURAL GAS 7.0" W.C.
(1.75 kPa)
5.0" W.C.
(1.12 kPa)
11" W.C.
(2.61 kPa)
3.5" W.C.
(0.87 kPa)
0 - 1/8 " OPEN
(3 mm)
L.P. GAS 11.0" W.C.
(2.75 kPa)
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)
Figure 9:
Gas Valve Pressure
Test Ports

20 | Page
GENERAL 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 FV-41 Fireplace is approved for
mobile home and bedroom installations.
CAUTION: The Mendota FV-41 Fireplace may be installed in a manufactured (mobile) home after the first sale of the home. Manu-
factured 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.
HIGH ALTITUDE INSTALLATION INFORMATION: Prior to installing at altitudes greater than 7500, please contact the
Mendota technical service department for specific venting requirements and venting restrictions.
1. After selection of the desired fireplace location, prepare the rough opening using framing dimensions on page 10.
Be sure to also prepare opening to allow for co-axial vent).
2. Check to make certain all venting requirements and locations are being followed.
3. This Fireplace is designed for installation into rough framing. NOTE: FRAMING MATERIAL ABOVE FIREPLACE
MUST MAINTAIN CORRECT CLEARANCE TO FIREPLACE AND VENT PIPES.
WARNING: One-inch clearance to sides & below and inches clearance on top of horizontal vent sections and el-
bows are required.
4. NOTE: A removable panel in the enclosure for future visual inspection of flue connection is recommended.
5. Have an electrician install a 115-Volt supply to the junction box on lower left side of the fireplace cabinet. Connect
wires using wire nuts. Make sure the grounding wires are properly connected and that the installation conforms to
all local and national wiring codes.
6. Have gas supplier or qualified plumber install gas supply line to fireplace and FRQQHFWWRWKHò´IHPDOHFRQQHFWRU
Be sure gas and plumbing instructions (see Page 18 and 19) and all local and national codes are carefully followed.
IMPORTANT: Any safety screen, guard, glass, grill etc. removed for servicing this fireplace must be replaced prior to
operating this fireplace.
BLOWER OPERATION
The blower output can be regulated with the remote (in-
cluded). NOTE: There will be a time delay in blower
operation during "heat-up" (5 min.) and extended blower
operation during "cool-down" of unit (12-1/2 min.).
OPERATION DURING POWER OUTAGES
The fireplace is designed to operate during power out-
ages on back-up batteries. The blower and Accent Light
will not operate during the power outage.
Backup batteries are located inside the wall-
mounted remote receiver box. Change the batteries
at least once a year.
The FV-41 Fireplace must be installed by a qualified service person.
Figure 10: Junction Box
FRONT
110VAC INLET
14-2 CABLE REQ'D
GAS LINE INLET
1/2" FNPT REQ'D
12 1
16
915
16
141
4