Mendota FV44i Manual

INSTALLATION & OPERATING INSTRUCTIONS
Full View Direct Vent Gas Fireplace Insert
With
Premium Texture Fiber Logs Combustion System
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 oth-
er 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
phone. Follow the gas supplier’s instructions.
•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
MODEL NO. FV44i
DOCUMENT: FV44i-0510
This appliance may be installed in an aftermarket per-
manently located, manufactured (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. This appliance is not
convertible for use with other gases, unless a certified
kit is used.

1
TABLE OF CONTENTS
SPECIFICATIONS....................................................................................................................................................................................2
SAFETY AND WARNING INFORMATION ..........................................................................................................................................3
GENERAL INFORMATION....................................................................................................................................................................5
SAFETY AND STRUCTURAL CONCERNS:..........................................................................................................................5
VENTING REQUIREMENTS...................................................................................................................................................5
HEATING PERFORMANCE.......................................................................................................................................................5
ELECTRICAL REQUIREMENTS............................................................................................................................................5
SPECIFICATIONS & CLEARANCES.................................................................................................................................................6
INSTALLATION INSTRUCTIONS.........................................................................................................................................................7
FLUE VENTING .....................................................................................................................................................................................8
CHIMNEY FLASHING AND CAP ..............................................................................................................................................9
RAISED HEARTH SPECIFICATIONS..............................................................................................................................................11
GAS SUPPLY REQUIREMENTS .......................................................................................................................................................12
GAS PRESSURE REQUIREMENTS..................................................................................................................................................13
INSTALLATION CHECK OFF LIST.................................................................................................................................................16
LIGHTING CHECK OFF LIST...............................................................................................................................................................16
DOOR REMOVAL AND REPLACEMENT............................................................................................................................17
FV-44I LOG SET INSTALLATION INSTRUCTIONS...........................................................................................................18
FV-44 I LOG SET PARTS ...............................................................................................................................................................18
BEFORE YOU BEGIN..........................................................................................................................................................................27
REMOTE CONTROL TRANSMITTER FUNCTIONS ...............................................................................................................27
M ODE SELECTION KEY .................................................................................................................................................................27
R EMOTE TRANSMITTER OPERATING INSTRUCTIONS ........................................................................................................................28
T O TURN ON THE APPLIANCE ........................................................................................................................................................28
T O TURN OFF THE APPLIANCE ......................................................................................................................................................28
M ODE KEY ...................................................................................................................................................................................28
F LAME HEIGHT ............................................................................................................................................................................28
S ECONDARY BURNER ....................................................................................................................................................................28
MANUAL BYPASS OF THE REMOTE SYSTEM......................................................................................................................29
TEMPERATURE INDICATOR (OF OR OC)............................................................................................................................29
KEY LOCK FUNCTION............................................................................................................................................................29
LOW BATTERY POWER DETECTION....................................................................................................................................29
OPERATING
DURING POWER OUTAGES.............................................................................................................................29
“FIRST TIME” PILOT LIGHTING INSTRUCTIONS.............................................................................................................30
I NITIALIZING THE REMOTE CONTROL SYSTEM ......................................................................................................................................30
S YNCHRONIZING RECEIVER AND TRANSMITTER ..............................................................................................................................30
IPI/STANDING PILOT SYSTEM INFORMATION.........................................................................................................................31
INTERMITTENT PILOT LIGHT AND STANDING PILOT LIGHT FEATURES......................................................................31
IPI MODE. ................................................................................................................................................................................31
STANDING PILOT MODE........................................................................................................................................................31
FV-44 I GAS IGNITION SYSTEM WIRING DIAGRAM.......................................................................................................................32
MAINTENANCE....................................................................................................................................................................................33
BURNER FLAMES GENERAL HEIGHTS REFERENCE DIAGRAM......................................................................................33
NATURAL TO LP GAS CONVERSION.............................................................................................................................................34
ORIFICE SIZES REQUIREMENT:...........................................................................................................................................34
RECOMMENDED PROCEDURE TO CONVERT THIS FIREPLACE TO BURN LPG...........................................................34
L P GAS PRESSURE REQUIREMENTS .........................................................................................................................................................37
Lpg proper input rates:..............................................................................................................................................................37
Leak testing requirements..........................................................................................................................................................37
BLOWER OPERATION AND WIRING ................................................................................................................................................39
EMERGENCY GAS CONTROL SHUTOFF.......................................................................................................... 39
CUSTOMER INFORMATION AND TROUBLE-SHOOTING.............................................................................................................40
TROUBLE SHOOTING MENDOTA GAS FIREPLACE INSERT........................................................................................................40
G AS FLAME ADJUSTMENT ...........................................................................................................................................................................41
R EPLACEMENT AND S ERVICE P ARTS ........................................................................................................................................................42
FV-44i VALVE ASSEMBLY REPLACEMENT PARTS..............................................................................................................42
MENDOTA WARRANTY QUALIFICATION & SERVICE REFERENCE FORM .............................................................................44
MENDOTA EXTENDED LIFETIME PROTECTION AND LIMITED WARRANTY.........................................................................46 

2
SPECIFICATIONS
MODEL FV-44i
High Fire - Adj. to - Low Fire
BTUH ....................................................NAT. GAS 40,000 ----- 16,300
BTUH ....................................................L.P. GAS 40,000 ----- 15,300
MAIN ORIFICE……REAR BURNER: #42 NAT. GAS [#54 L.P. GAS] – FRONT BURNER: #45 NAT. [#55 LP]
EFFICIENCY .................................. .EXCEEDS D.O.E. EFFICIENCY REQUIREMENTS (A.F.U.E.)
FLUE VENT LINER.......................... .CO-LINEAR - 4” DIAMETER EXHAUST & 3” DIAMETER INLET
NET WEIGHT..................................195 lbs.
SAFETY......................................... .AGA CERTIFIED, ELECTRONIC IGNITION IPI SYSTEM
ACTIVATED WITH THERMOSTATIC REMOTE CONTROL.
GAS REQUIREMENTS..................... .SUPPLY PRESSURE: GAS INLET: 3/8" N.P.T.
NAT. GAS: 7" W.C. [5.0" W.C. MIN., 11" W.C. MAX.]
L.P. GAS: 11" W.C. [11" W.C. MIN., 13" W.C. MAX.]
ELECTRICAL REQUIREMENTS ...... 120 Volts AC, 2 Amps (minimum line voltage allowed 110 Volts AC)
LISTINGS - INTERTEK TESTING SERVICES TESTED TO: ANSI Z21.88-2005 – CSA2.33-2005 – CAN/CGA 2.17-M91
Gas appliances must be tested and certified by a nationally recognized testing and certification agency to American Na-
tional Standards Institute - ANSI Gas Appliance Safety Standards. . The Mendota Gas Fireplace Insert has been tested
and certified by Intertek Testing Services. 8431 Murphy Drive, Middleton, WI 53562.
INSERT INCLUDES CERAMIC COMBUSTION SYSTEM, DUAL HOT AIR BLOWERS, PREMIUM 8-PIECE FIBER LOG SET & COALS, NEO-CERAM
GLASS,THERMOSTATIC REMOTE ELECTRONIC IGNITION, AGA CERTIFIED SAFETY SYSTEM.

3
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 that the unit’s control compart-
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.
CAUTION: Do not operate the appliance with glass removed, cracked or broken. Replacement of the panel(s) should be
done by a licensed or qualified service person.

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 Premium Fiber 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.

5
GENERAL INFORMATION
Your Mendota Gas Fireplace Insert has a state-of-the-art 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 FV-44i Fireplace Insert 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 relighting pilot. The flame must not "lift" off the burner.
ALWAYS USE MENDOTA FACINGS, MENDOTA VENT SYSTEMS AND MENDOTA APPROVED VENT CAPS.
ONLY DOORS CERTIFIED WITH THE APPLIANCE SHALL BE USED.
A non-combustible hearth protector is required and must extend a minimum of 16" in front of the fireplace when this
insert is installed at floor level.
VENTING REQUIREMENTS
Use only Mendota specified vents and vent caps when installing your fireplace insert. All vent pipe sections must be
tight and leak proof.
HEATING PERFORMANCE
The Mendota FV-44i I Fireplace Insert is a true, high efficiency gas heater. The Mendota Insert will usually heat a large
area of your home if situated to maximize heat circulation. NOTE: The Mendota Insert is designed as a supplemental heat
source. It should not be used as a whole house heating system. Supplemental air movement considerations for maximizing
heat circulation are: through-the-wall grills, floor grills, ceiling fans, or the continuous operation of central heating and
cooling blowers. The most EFFICIENT and successful method for overall heat distribution is a ceiling fan.
"Customer In-
formation". The heat output of the Insert can be reduced by using the down arrow on the Remote Control. Heat output
can be further reduced by turning off the rear burner using the remote control. The blowers can also be turned down to
reduce heat output.
ELECTRICAL REQUIREMENTS
A 120-volt electrical service must be supplied at the fireplace location at the time of installation.
The blowers must be electrically grounded in accordance with local codes or in the absence of local codes, with the Na-
tional Electric Code ANSI/NFPA 70-1987. The blowers are equipped with a three-prong (grounding) plug for your protec-
tion against shock hazard and should be plugged directly into a properly grounded three-prong receptacle. DO NOT CUT
OR REMOVE THE GROUNDING PRONG FROM THIS PLUG!
APPROVED MANTEL PROFILES
The existing Combustible Mantel must fall within
the approved mantel profile chart. If the it does
not, either remove and relocate the combustible
mantel at an approved height or add a 20 gage
metal shield underneath the combustible mantel
that extends the full width and depth of the com-
bustible mantel. Provide a 1” active air space
between the metal shield and the bottom sur-
face of the combustible mantel. Use ceramic
spacers to create the 1” active air space.
APPROVED MANTEL PROFILES
MANTEL DEPTH (IN.)
NOTE: FOR MANTELS LOCATED
AT A DISTANCE MORE THAN 14
INCHES ABOVE THE
CONVECTION AIR OPENING, USE
THE HEIGHT TO DEPTH RATIO IN
THIS CHART TO DETERMINE IF
THE EXISTING MANTEL IS
CONFORMING.
DISTANCE TO MANTEL (IN.)

6
34
24
16 1/2
14 1/2
11 1/2
8“MIN.CLEARANCE
COMBUSTIBLEMANTEL
12”MIN‐TOPOFVENTSLOT
TOBOTTOMOFMANT EL
23
1/2
33 1/4
“D”
“D”
8”MAX@12”ABOVE
HEATOUTLET
TR IM
12
1/2 TOPVIEW
FRONTVIEW
SIDEVIEW
1/2
11 1/2
14 1/2
4”VENTPIPE
3”VENTPIPE
COMBUSTIBLE
MANTEL
25 1/4
23 3/4 22 1/2
16“MIN.
NON‐COMBUSTIBLE
HEARTHEXTENSION
MENDOTA FV-44i GAS DIRECT VENT FIREPLACE INSERT
SPECIFICATIONS & CLEARANCES
FV-44i Faceplate Dimensions
A B
Inches mm. Inches mm.
No Trim 31 788 44 1118
33 838 48 1220
36 914 52 1321
With Black
or Brass
Trim
31 1/16 792 44 1/8 1122
33 1/16 843 48 1/8 1224
36 1/16 920 52 1/8 1326
“A”
“B”
The solid-fuel fireplace chimney must be
clean and in good working order and is con-
structed on non-combustible materials
Chimney cleanouts must fit properly.
The refractory, glass doors, screen, and log
grates can be removed from the solid-fuel
fireplace to accommodate the gas insert.
Smoke shelves, shields, and baffles can be
removed if attached with mechanical fasten-
ers.
Trim panels and surrounds shall not seal
ventilation openings in the fireplace.
WARNING: Failure to position the parts in
accordance with these diagrams or failure to
use only parts specifically approved with this
appliance may result in property damage or
personal injury.
Cutting of any sheet metal parts on the solid-
fuel fireplace is prohibited.
MinimumAllowableFireplaceOpening:
34”wideX24”highX17”Deep
NOTE:Installermustattachthesup‐
pliedwarninglabel,includedinthe
instructionpacket,totheinsideofthe
fireplacebeforeinstallinginsert.
18” MIN CLEARANCE

7
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 Inserts 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 with National Fuel Gas Code ANSI Z223.1 (NFPA 54), or Canadian Code CAN1-B149 or most current edition, also known as
NFPA 54. Do not connect this Insert to a chimney flue serving a separate solid fuel or gas-burning appliance.
1. Remove glass doors, metal fire screens, etc. from existing fireplace. Be sure there is 12" minimum dis-
tance from top of upper grill to bottom of mantel; see Specifications (Pg.6 & 5), and a 16" minimum non-
combustible hearth extension in front of the glass surface if a raised hearth is not supplied. (See pg. 11
for "Raised Hearth").
2. Remove any additional framework or other obstructions in the existing fireplace opening and burning area.
Also remove any chimney cap from top of chimney so that vent liner can be installed freely.
3. Before Insert is installed, have gas supplier or contractor run gas line to the existing fireplace. Be sure gas
plumbing instructions [see Pg. 12 & 13 are carefully followed. Gas supply may enter fireplace on either
side or back of fireplace, whichever is most convenient and accessible. Electrical service (120 volt) should
also be supplied [See electrical requirements on Pg. 5 and blower instructions on Pg. 38].
4. The entire chimney should be swept to remove creosote, soot and any obstructions (bird nests, etc.).
5. Open fireplace damper. If damper opening is large enough to accept the 4" and 3" flue liners, permanent-
ly secure damper in "open" position. NOTE:
Massachusetts requires that the flue damper must be re-
moved or permanently welded in the "open" position.
6. If damper opening is too small for the 4" & 3" flue liners, it will be necessary to remove the damper handle
and the damper plate. Some damper plates are held in place by a pinned hinge that can be released easily
by tapping out the pin with a hammer and punch. Others may be held in place by a screw or bolt, or pi-
vots may be cast into the damper housing. The latter types may be harder to get out and may require
sawing or breaking out. [NOTE: if flue size is 6" (127 mm) or less, or if severe offsets occur, or a signifi-
cant mortar slop is evident between the liners, try to snake liner down the chimney to the top of the dam-
per housing before breaking out damper plate and housing.]
CAUTION: If the 4" & 3" flue liners cannot be installed in an extremely tight chimney DO NOT proceed
with installation.
7. If damper opening is narrower than 4-1/2" to 5" (114 mm to 127 mm) and if local code authorities allow,
loosen and remove mortar behind back side of damper housing in the center of the opening enough to get
the gripping teeth of a pipe wrench over the flange of the damper housing (for cast iron housings). Tigh-
ten the wrench snugly, and kick down on the wrench handle to break out a half moon shaped piece of the
damper housing, enough to easily fit the flex liner through it. If the opening is wide enough, the break out
is not necessary.
8. Install Insert only in chimney heights of 12' (minimum) to 35' (maximum) -- as measured in
step 9 below.
9. Measure the chimney height from the top of the chimney (or the existing flue liner) to a point 24" (610
mm) above the floor of the fireplace hearth. It may be necessary to drop a rope and measure the rope it-
self. Be sure to allow for all offsets in existing chimney. Cut the 4" and 3”diameter flex liner (s) to this
measured length.

8
FLUE VENTING
The FV-44i Insert must be vented vertically to the outside and must use the Mendota Co-Linear flexible ducting system.
NOTE: THE INSERT IS DESIGNED, TESTED AND LISTED FOR OPERATION ONLY WITH MENDOTA
INSERT VENTING COMPONENTS AS LISTED IN FIGURES BELOW:

9
Chimney Flashing and cap
(See FIGURE BELOW) The vent kits include a trim-able flashing. Measure, trim and shape flashing to fit the
existing flue liner. This flashing prevents water and small animals from entering area between the chimney
liner and flue liner. Plan for 1” to 1-1/2” (25 mm to 38 mm) overlap on each side. Center the flashing and
mark it about 3" (75 mm) larger in each dimension than the existing chimney. Trim the notch with snips and
bend edges with hand seaming tool, metal break or pliers.
12. Attach a sheet metal strap loop to the flex end of the liner(s) and tie a rope to it. Two installers
should proceed to the roof and drop the rope (with weight on the end to make sure it goes all the way
down) and insert the liner(s) past the flexible portion, into the existing chimney – SEE BELOW:
NOTE: Repeat this step for second liner.
SLIDEADAPTER
22“above
fireboxfloor
13. One installer should then return to the fireplace opening and pull the rope to guide the liner(s) into place
through the smoke shelf and the damper opening to a point 22" (560 mm) above the fireplace hearth.
The person below should wear leather gloves and Safety Glasses during this process to avoid being cut
and to safeguard eyes from flying debris.
CAUTION: WHEN USING FLEX ALUMINUM LINER, USE EXTREME CAUTION WHEN STRETCHING LINER
AROUND OFFSETS SO AS NOT TO RUPTURE LINER.

10
14. Remove the Vent Adapter by removing two
5/16” Hex Bolts and sliding Vent Adapter to-
wards rear of Insert.
15. Tightly secure 3” and 4” flex vents with
clamps provided. Seal vent cap/flashing to
top of chimney with weatherproof sealer.
Seal areas between flex pipes and existing
chimney, at damper area, with unfaced fiber-
glass insulation.
16. Carefully slide Insert into the fireplace open-
ing (Note: Plug in the AC Power cord to a
110 volt AC receptacle inside the fireplace
opening or extend it out and connect to a
grounded wall outlet.
17. Slide Vent Adapter forward between guide
rails. Vent Adapter’s front flat section should
contact insert top as you slide the Vent Adap-
ter forward.
18. Use Glass Latch Tool to grab Vent Adapter
through slot and hole provided. As you apply
downward pressure, pull Vent Adapter forward until front flange on Vent Adapter is about ½” away from
front lip on Insert.
19. Slide 5/16” Hex Bolts through holes in face of Insert and start one Bolt in each of the two press nuts on
Vent Adapter Flange. Using a 5/16” Hex Hand Driver, tighten the hex bolts a few turns at a time alternat-
ing between the two hex bolts until the screws are hand tight and vent adapter is pulled fully forward.

11
18. You are now ready to hook up the Insert to gas supply. Be sure gas plumbing instructions and all state and local
codes have been carefully followed. Be sure all items on Installation Check-Off List have been completed.
NOTE: AGA APPROVED FLEX LINES ARE APPROVED FOR USE WITH MENDOTA INSERTS.
19. Carefully slide the Insert into place in the fireplace opening. At this time, check that Insert is level and plumb with
the fireplace opening and positioned in the middle of the opening. If Insert is unsteady or needs leveling, the unit
may need to be “shimmed with washers under the bottom corners of insert.
20. The proper Insert Faceplate can now be placed in position. Assemble surround by following instructions supplied
with faceplate kit. Select the appropriate size of faceplate to cover the area between the Insert and existing fireplace
opening.
...IMPORTANT...
INSTALLATION, SERVICING AND REPAIR MUST BE DONE BY A QUALIFIED SERVICE PERSON. THE INSERT SHOULD BE
INSPECTED 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 THAT THE
CONTROL COMPARTMENT BURNERS AND CIRCULATING AIR PASSAGEWAYS OF THE INSERT BE KEPT CLEAN.
RAISED HEARTH SPECIFICATIONS
In most installations, a 16" non-combustible protector is required in front of the unit’s glass door
surface on the floor or raised hearth. This protection can be any non-combustible material such
BOTTOM EDGE OF
GLASS WINDOW

12
as 24-gauge sheet metal, tile, brick, concrete board, etc. Please note that the required 16” clear-
ance starts at the front face of the glass door. If replacing a wood-burning insert with this gas in-
sert, the existing and approved hearth protection will provide adequate floor protection.
If a raised hearth extends less than 16", refer to the diagram above and the following procedure
to see if additional floor protection is required.
Project a line (using string or a tape measure) from the lower edge of the glass window to the
edge of the raised hearth, continuing on to the floor. If the point of intersection with the floor is
beyond 16" from the Insert, then no further floor protection is required. If the intersection is less
than 16" from the Insert then additional non-combustible floor protection is required to meet the
minimum 16".
For installations where the fireplace is raised 16" or more above the floor, or if the existing floor is
non-combustible (stone, brick, etc.), a non-combustible protector is not required.
GAS SUPPLY REQUIREMENTS
NOTE: IF INSERT IS TO BE OPERATED WITH LP GAS, SEE PAGE 34 BEFORE PROCEEDING.
CORRECT GAS PRESSURE AND PROPER GAS SUPPLY LINE SIZING IS IMPERATIVE TO THE SUCCESSFUL PERFORMANCE OF YOUR ENDOTA GAS
FIREPLACE INSERT. BE SURE THE GAS SUPPLIER OR PLUMBER CAREFULLY CHECKS FOR CORRECT GAS PRESSURE AND GAS LINE SIZING WHEN
INSTALLING THE FIREPLACE INSERT.
IT IS CRITICAL TO CAREFULLY CHECK FOR GAS LEAKS WHEN HOOKING UP THE FIREPLACE INSERT -- CHECK WITH SOAP & WATER SOLUTION.
BE SURE TO INSTALL 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.
GAS SUPPLY LINE SIZING
The Mendota Gas Insert comes equipped with a 3/8" N.P.T. [1.0 cm] inlet on the main gas valve. Gas supply piping may
enter the cabinet from either the left or rear side. A 48” X 3/8” SS Flex supply line is supplied in the Manual Packet with
this Insert.
The proper gas line diameter must be selected to run from the supply regulator to the Insert. Refer to the following table
for proper gas pipe diameters.
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 copper tubing or galvanized pipe - check with local approval agencies and codes NEVER use plastic
pipe.

13
GAS PRESSURE CHECKING REQUIREMENTS
A pressure tap for checking gas pressure is located on the main gas valve. A qualified installer should use this fitting for
setting the correct gas pressure during initial installation. [See Gas Pressure Chart Pg. 13].
If supply gas pressures exceed 1/2 PSIG [3.5KPA], the appliance must be isolated from its supply with an approved ma-
nual shut-off cock. This manual shut-off cock must be closed during any supply line pressure testing. Check with your
gas supplier or plumber.
If the factory-built fireplace has no gas access hole(s) provided, an access hole 1.5” or less may be drilled through the
lower sides or bottom of the firebox in a proper workmanship like manner. This access hole must be plugged with non-
combustible insulation after the gas supply line has been installed.

14
GASPRESSUREREQUIREMENTS
One major cause of operating problems with gas appliances can be improper gas pressure!
Such problems 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 impro-
per gas pressure at the time of the installation. The most important item to check during the installation and
the first thing to check 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 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" regulators are used.
The following table provides information on correct gas pressure requirements. Be sure your gas supplier or
plumber carefully follows this table.
DESIRED
INLET
PRESSURE
MINIMUM
INLET
PRESSURE
MAXIMUM
INLET
PRESSURE
NATURAL GAS 7.0" W.C.
(1.75 kPa) 5.0" W.C. (1.12 kPa) 11" W.C. (2.61 kPa)
L.P. GAS 11.0" W.C.
(2.75 kPa) 11" W.C. (2.75 kPa) 13.0" W.C. (3.24 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 taken at the MANIFOLD" tap and inlet pressure at the "SUPPLY" tap with the burner oper-
ating by a qualified installer.
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.
Note:
Consult the local or national installation code(s) to assure that adequate combustion and ventilation air is
available.

15
HIGH ALTITUDE INSTALLATIONS
For installations from 610-1370 meters (2000-4500 ft.) the orifice sizes (DMS) for natural gas are #43 Front/#46
rear and for propane gas are #55 front/#54 rear. See data plate for additional information. For high altitude instal-
lations consult the local gas distributor or the authority having jurisdiction for proper rating methods. If the installer
must convert the unit to adjust for varying altitudes, the information sticker must be filled out by the installer and ad-
hered to the appliance at the time of conversion.
«Cet appareil est equipé pour des altitudes compries entre 0 et 2000 pieds (0-610 m) seule-
ment»
This appliance has been converted for use at an altitude of ______________
Orifice size _______________ Manifold Pressure ________________
Input (Btu/h)_______________ Fuel Type _______________________
Date of conversion _________ Converted by _____________________
«Cet appreeil a été converti au ____
Injecteur ________
Pression à la tubulure d'alimentation _____________
Déoit calorifique _______________»

16
INSTALLATION CHECK OFF LIST
The following check list must be completed prior to initial lighting of the Fireplace
Insert, or manufacturer's warranty and liabilities will be voided:

Venting system must be installed by a Mendota approved person according to Figure 3, Pg. 8 with
clamps securely in place and all joints leak proof.

Electrical supply and gas supply must be properly installed and must conform to National and Local
Codes.

Check that correct fuel supply is connected to appliance. Check correct gas pressure, correct size gas
lines and for gas leaks on all gas supply connectors and this gas insert’s gas valve train connectors.

Proper clearances to combustibles must be maintained.

LEAK TEST REQUIREMENT: Vibration during shipping and transit of this appliance may cause some
gas connections to loosen. All gas train connections in this appliance, including field installed supply line
fittings and all factory installed gas train connections between the gas valve and the burner orifice(s)
and pilot light, must be leak tested prior to first firing using soap and water solution or a calibrated
Combustible Gas Detector. All leak tests are to be performed by a qualified installer. It is the responsi-
bility of the installer to verify that all connections are sealed properly and leak-proof.
LIGHTING CHECK OFF LIST
Be sure to check these items before final operation of the Fireplace Insert

All items on "Installation Check Off List" must be completed.

Connect Rocker Switch, Wall Switch, Remote Control or Thermostat to main valve.

Carefully follow all lighting and log installation instructions. Make certain that burner lights immediately
and lights both front and rear burners.

DO NOT proceed with operation unless burner cycles "on/off" without delays and the flame is "stable"
and not "lifting" off burner.

Caution: If pilot goes out be sure to wait a minimum of 5 minutes before relighting.

17
2.) PULL
3.) ROTATE
4.) RELEASE
1.) INSERT
DOOR REMOVAL AND REPLACEMENT
CAUTION: Do not operate the appliance with glass removed, cracked or broken. Replacement of the panel(s) should be
done by a licensed or qualified service person.
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. Release Glass Latch Tool.
5. Remove Glass Latch Tool.
To Latch Glass Frame Latches , reverse steps 5 to 1, above.

18
FV-44i LOG SET INSTALLATION INSTRUCTIONS
FOLLOW EACH STEP DEPICTED IN THE DIAGRAMS, BELOW, TO INSTALL THE LOG SET.
CAUTION: LOGS ARE FRAGILE, HANDLE LOG PIECES WITH CARE.
FV-44i LOG SET PARTS
IDENTIFICATION DIAGRAM

19