MENDOTA GAS DIRECT VENT FIREPLACE WITH HEARTHGLO SEALED COMBUSTION SYSTEM Model DXV-35 TIMBER FIRE with Direct Rear Vent Option STANDARD FRONT BAY FRONT INSTALLATION & OPERATING INSTRUCTIONS NO. TF-0605 WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual. For assistance or additional information consult a qualified installer, service agency or the gas supplier.
TABLE OF CONTENTS CONGRATULATIONS! ____________________________________________________________________________________ 3 LOCATING THE FIREPLACE AND GENERAL INFORMATION__________________________________________________ 4 GENERAL INFORMATION_________________________________________________________________________________ 4 TOP VENT AND REAR VENT OPTIONS DISCUSSION _________________________________________________________ 5 GAS SUPPLY REQUIREMENTS_______________________________________________________________
SPECIFICATIONS MODEL DXV-35 TIMBER FIRE High Fire - Adjustable to - Low Fire BTUH. (MODEL DXV-35) BTUH. (MODEL DXV-35) NAT. GAS LP GAS 33,000 33,000 21,000 18,500 MAIN ORIFICE………………………#32 NAT. GAS -- #50 L.P. GAS OVERALL EFFICIENCY .................... EXCEEDS D.O.E. EFFICIENCY REQUIREMENTS (A.F.U.E.) FOR DIRECT VENT ............................................................... WALL HEATERS CO-AXIAL DIRECT VENT FLUE ..... TOP VENT: 4" INNER, 6 5/8" OUTER; REAR: 5” INNER 8” OUTER TOTAL WEIGHT .........
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.
GENERAL INFORMATION Your Mendota Gas Fireplace has a state-of-the-art co-axial direct vent, sealed combustion system. This advanced, highly efficient system brings in outside air for combustion has a separate exhaust vent and efficiently heats and re-circulates room air. The Mendota system maintains high air quality, maximizes efficiency and assures proper operation in today's "tight" homes.
TOP VENT AND REAR VENT OPTIONS DISCUSSION This Mendota Fireplace can be vented using AMERIVENT, DURAVENT, SELKIRK METALBESTOS, SECURITY CHIMNEY brands of coaxial pipe off the top or using 5”x8” coaxial pipe off the rear. Use only Mendota specified vents and vent caps when installing your fireplace. Closely follow venting locations, directions and requirements provided in this Manual. Observe the restrictions related to vent position on exterior of home (see pg. 8).
GAS SUPPLY REQUIREMENTS CORRECT GAS PRESSURE AND PROPER GAS SUPPLY LINE SIZING IS IMPERATIVE TO THE SUCCESSFUL PERFORMANCE OF YOUR MENDOTA GAS FIREPLACE. BE SURE THE GAS SUPPLIER OR PLUMBER CAREFULLY CHECKS FOR CORRECT GAS PRESSURE AND GAS LINE SIZING WHEN INSTALLING THE FIREPLACE. IT IS CRITICAL TO CAREFULLY CHECK FOR GAS LEAKS WHEN HOOKING UP THE FIREPLACE -- CHECK WITH SOAP & WATER SOLUTION. BE SURE TO INSTALL "APPROVED" FLEX GAS LINE WITH BRASS-TO-BRASS FITTINGS TO PREVENT GAS LEAKS AT CONNECTIONS.
GAS PRESSURE REQUIREMENTS A 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 improper gas pressure at the time of the installation.
EXTERIOR VENT LOCATIONS AND RESTRICTIONS Figure 2: Exterior Vent Locations ∨ - Vent Terminal A= B= ALL MEASUREMENTS FROM CENTER LINE OF VENT CAP ∧ - Air Supply Inlet Clearance above grade, veranda, porch, deck, or balcony (*12 inches (30 cm) minimum). Vinyl surfaces require 24” min. Clearance to window or door that may be opened (*12 inches (30 cm) minimum.
GENERAL FLUE VENTING INSTRUCTIONS The Mendota Fireplace must be vented using the Mendota/DuraVent/American Metals venting system.
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.
INSTRUCTIONS FOR TOP VENTING This section covers all pertinent information regarding the installation of this DXV-35 Fireplace using the Top Vent option. Read this entire section thoroughly before attempting to install this DXV35 Fireplace. Failure to follow all directions and failure to observe all restrictions and clearances can result in property damage, bodily injury or can lead to death.
MENDOTA DXV-35 GAS DIRECT VENT FIREPLACE SPECIFICATIONS & CLEARANCES FOR TOP VENTING WARNING: Do not cover the 2” faceplate border of the unit with combustible materials. 26 1/4 37 1/8 22 1/4 6"MIN. 10 3/4 11 1/8 1"MIN.
TOP FLUE VENTING COMPONENTS ITEM 1 1 1 1 2 3 4 5 9 10 10 11 12 13 14 15 DESCRIPTION 12" VENT STACK (MIN. 9” REQ’D”) 24" VENT STACK (MIN. 9” REQ’D”) 36" VENT STACK (MIN. 9” REQ’D”) 48" VENT STACK (MIN.
FLUE VENTING REQUIREMENTS FOR TOP VENT SYSTEMS NOTE: FOR LP GAS & HIGH ALTITUDE, SEE PG. 15 Figure 6: DXV35 Vertical & Horizontal Vent Requirements *NOTE: 9” MINIMUM RISE CAN BE USED IF NO HORIZONTAL VENT SECTIONS GREATER THAN 6” (or 7”) ARE USED. ALL OTHER INSTALLATIONS MUST FALL WITHIN ABOVE SHADED AREA.
L.P. GAS MINIMUM HEIGHT HORIZONTAL TERMINATION L.P. GAS OR HIGH ALTITUDE (ABOVE 4,000 FT. BUT BELOW 7500 FT.) WALL THIMBLE REQUIRED 6" COAX VENT (MIN.) 45° COAX VENT TERMINATION CAP 45° COAX VENT 9" COAX VENT (MIN.) 19" (MIN.) 46 1/4" (MIN.) 85-03-00531 15 1/2" For L.P. gas and high altitude installations (above 4,000 ft.), 45° elbows must be used in place of 90° elbows. NOTE: This requires 19” minimum height to center.
A-1 MINIMUM RISE THROUGH-THE-WALL VENTING: The minimum vertical rise for vent installation through the wall is 16 1/4" from the top of the fireplace to the centerline of the 90º elbow in installations where only a 6” (or 7”) horizontal vent section is used (refer to chart on pg.14 when using horizontal sections). NOTE: We recommend always using the most vertical rise the installation will allow. This maximizes efficiency and flame appearance.
TOP VENT COMPONENTS LIST MENDOTA # 45-01-00186 45-01-00187 45-01-00188 45-01-00189 45-01-00190 45-01-00191 45-01-00192 45-01-00193 45-01-00194 45-01-00195 45-01-00196 45-01-00197 45-01-00198 45-01-00199 45-01-00200 45-01-00201 45-01-00202 45-01-00203 45-01-00204 45-01-00206 45-01-00207 45-01-00208 45-01-00209 45-01-00210 45-01-00211 45-01-00212 45-01-00213 45-01-00214 45-01-00215 45-01-00216 45-01-00217 45-01-00218 45-01-00219 45-01-00220 45-01-00224 45-01-00225 45-01-00226 DESCRIPTION 7" LENGTH 12" LENGTH
A-2. ELEVATED RISE THROUGH-THE-WALL VENTING The required vertical rise is 48 in. when used with a maximum horizontal run of 12 ft. For other venting configurations within these maximum limits, see Figure 6, pg. 14. NOTE: The horizontal run of vent pipe must be level or have a ¼" rise for every 1' of run toward the termination. Never allow the vent to run downward. This will cause high temperatures and the possibility of a fire.
B-1 VERTICAL THROUGH-THE-ROOF VENTING The maximum vertical run of vent pipe is 36ft. from the top of the fireplace. The fireplace will support a run of a maximum of 36 ft. Maintain 1" air space clearances on all sides of vents (2" above horizontal runs). IMPORTANT: REFER TO DRAWINGS ON PAGES1215 WHILE FOLLOWING THESE INSTRUCTIONS. The DXV-35 Fireplace must be installed by a qualified Mendota approved serviceperson. 1. Place the fireplace in its desired location.
7. Height "*H" of top of vent cap can be determined as follows: ROOF PITCH FLAT to 6/12 7/12 to 9/12 10/12 to 12/12 13/12 to 16/12 17/12 to 21/12 8. "H" DIMENSION FEET METERS 2 .6 2 .6 4 1.2 6 1.8 8 2.4 Complete installation with storm collar and vent cap.
INSTRUCTIONS FOR REAR VENTING This section covers all pertinent information regarding the installation of this DXV-35 Fireplace using the Rear Vent option. Read this entire section thoroughly before attempting to install this DXV35 Fireplace using the Rear Vent option. Failure to follow all directions and failure to observe all restrictions and clearances can result in property damage, bodily injury or can lead to death.
MENDOTA DXV-35 GAS DIRECT VENT FIREPLACE SPECIFICATIONS & CLEARANCES FOR REAR VENT SYSTEM USE ONLY DURAVENT 5"X8" COAXIAL PIPES AND VENTING COMPONENTS. 31 1/2 44 7/8 11 1/16 2X4 WALL 10 7/8 4 1/8 FOR 2X4 WALLS 2 5/8 FOR 2X6 WALLS 22 1/4 19 5/8 16 1/8 15 3/8 1/2 to 2 1/2 6" LENGTH MINIMUM 9" LENGTH MAXIMUM 35 7/8 45° 10" 45 Deg L USE A MINIMUM OF A 6" DURAVENT PIPE SECTION TO CONNECT THE REAR VENT STATER COLLAR TO THE HORIZONTAL CAP. SLIDE HORIZONTAL CAP OVER THE 6" PIPE AS FAR AS NEEDED.
REAR FLUE VENTING COMPONENTS 5”X8” DURAVENT VENT PIPES AND COMPONENTS ARE RECOMMENDED.
REAR FLUE VENTING REQUIREMENTS NOTE: A 9” MAXIMUM HORIZONTAL PIPE SECTION CAN BE USED WHEN VENTING THE DXV35 USING THE REAR VENT OPTION AGAINST A FLAT EXTERIOR WALL or IN AN EXTERIOR CORNER. WARNING MENDOTA RECOMMENDS THE USE OF DURAVENT 5”X8” COAXIAL PIPES AND FITTINGS. DURAVENT COMPONENTS PROVIDE THE MOST FLEXIBILITY SINCE DURAVENT HORIZONTAL TERMINATION CAPS SLIDE FULLY OVER THE 6” OR 9” STRAIGHT PIPE SECTION USED. COMBUSTIBLE MANTEL MUST REMAIN IN THIS TRIANGULAR AREA.
INSTRUCTIONS FOR HORIZONTAL VENTING AGAINST EXTERIOR WALL Mendota recommends the use of Duravent 5”x8” coaxial pipes and fittings. Duravent components provide the most flexibility since Duravent horizontal termination caps slide fully over the 6” or 9” straight pipe section used. Using Amerivent pipes and components are limiting and will increase the minimum framing depth. A 9” maximum horizontal pipe section is permitted when venting horizontally using the rear vent option against an exterior flat wall.
WARNING: Only Horizontal Runs are allowed when using the Rear Vent Option. 1. Position fireplace in desired location against an exterior wall. See pg. 8 for guidelines on proper vent cap placement on the exterior of home. Check to determine if wall studs are in the way when venting system is attached. If this is the case, you may want to adjust the fireplace location. 2. Determine the desired floor level for the fireplace.
CORNER INSTALLATION USING THE REAR VENT OPTION NOTE: The horizontal run of vent pipe must be level or have a ¼" rise for every 1' of run toward the termination. Never allow the vent to run downward. This will cause high temperatures and the possibility of a fire. USING OFFSETS AND RETURNS: A single 45º horizontal elbow is already calculated into the allowable maximum 9” horizontal run.
WARNING: Only Horizontal Runs are allowed when using the Rear Vent Option. When planning to install the DXV35 Fireplace with the rear vent option in an outside corner, it is recommended that thorough calculations and measurements be made prior to any construction. The diagonal distance desired will determine the exact location on the wall where the Horizontal Termination Cap will be placed relative to the inside corner. 8. Position fireplace in desired location. See pg.
DXV35 REAR VENT CONVERSION INSTRUCTIONS NOTE: You must order the Rear Vent Starter Collar Kit #AA-11-00645 from Mendota directly in order to perform this conversion. The DXV-35, as delivered, comes with the Top Exhaust and Air Intake Collars installed as shown below. The rear Exhaust and Air Intake ports are plugged. To convert to vent Out-the-rear, please follow these instructions carefully. Pay special attention to the locations of all Gaskets and Insulation material.
Step 1: Remove the Top Outer Jacket by first removing all the screws shown in the diagrams below. Carefully lift the rear end up and slide the Top Outer Jacket rearward. Set aside the Top Outer Jacket and screws for use in Step 3. TOP OUTER JACKET REMOVAL REMOVE ALL 1/4" HEX HD. SCREWS SHOWN BELOW. SAVE THE SCREWS.
STEP 2: Use an electric drill with a ¼” hex driver (with 6” extension) to remove the screws and parts from the top of the DXV-35 fireplace, as shown on left. IMPORTANT: Save Gaskets #65-02-00058 and 65-0200094 and screws # 50-01-00102 for use in STEP 2. STEP 3: Install all parts in sequence, as shown below. Start by first reinstalling the TOP OUTER JACKET then the other smaller components.
STEP 4: Remove the rear plug plates and gaskets as shown below. Save only Gasket #65-02-00095 and Screws #50-01-00102. Extra Screws are provided with this kit. STEP 5: Exhaust Collar #HA-30-00175 has a high temperature rated fiberglass gasket material installed on its flange face (see page 2). It is critical that this gasket material be seated properly to create an airtight seal. Install all parts in the exact sequence as shown below.
DXV DOOR OPERATION TO REMOVE DOOR (Flat shown) 1. Remove upper grill. 2. Open lower grill. 3. Place both thumbs on lower doorframe directly above Spring Loaded Door Holding Bar. 4. Reach fingers under Bar and pull Bar straight out from Fireplace front. 5. Pull Bar down and move Bar inward until Bar clears door frame - then release. 6. Repeat procedure for opposite Holding Bar. 7. Carefully lift door straight up until doorframe "clears" the 3 Door Holding Tabs on top of firebox. 8.
TIMBERFIRE LOG SET INSTALLATION With door removed, proceed as follows: 1. Before placing log assembly in firebox, fill space under Log Grate with coals. 2. Follow the diagrams below in the sequence given. Start by identifying the Log Pins and Pin Hole in the Airbox. Next, identify the log pieces according to the diagram below. 3. Place glowing embers (wool) sparsely on top coals, in front of front log. Additional wool may be rubbed on front surfaces of log for additional glow.
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The following Check Off Lists must be completed prior to final operation of the Fireplace, or manufacturer's warranty and liabilities will be voided: 38
INSTALLATION CHECK OFF LIST Co-axial vent rigid pipe, wall vent cap or roof vent cap must be installed by a Mendota approved person in accordance with instructions. All joints must be secured, "twist-locked" and leak-proof. 1000ºF sealant must be used on the inner pipe joints of all DuraVent pipe sections. Sealant is not required for Amerivent. Horizontal or vertical vent cap must be installed "right-side-up" and tightly sealed to structure per instructions. Vent Caps must be Mendota approved.
LIGHTING INSTRUCTIONS IMPORTANT: Be sure all items on "INSTALLATION CHECK OFF LIST" (pg. 39 have been completed! CAUTION: If the pilot goes out, be sure to wait a minimum of five minutes before relighting. BE SURE TO ALWAYS REMOVE THE GLASS BEFORE RELIGHTING THE PILOT. 1. ALWAYS LIGHT PILOT WITH GLASS REMOVED! (See drawing, pg. 33for glass door removal). 2. Make sure any gas supply shut-off cocks are open and Thermostat is "OFF". 3. Push in Gas Cock Dial Slightly and turn clockwise to "OFF".
THERMOSTAT OR REMOTE CONTROL OPERATION The Fireplace comes with a wall thermostat. The thermostat should be placed in the same room as the fireplace, approx. 4-5 ft. off the floor (out of reach of children). Do Not place thermostat near this fireplace or on an outside wall. CAUTION: BURNER SHOULD LIGHT IMMEDIATELY AFTER TURNING THERMOSTAT "ON". IF BURNER DOES NOT COME ON IMMEDIATELY TURN THE THERMOSTAT OFF AND WAIT 60 SECONDS BEFORE TURNING ON AGAIN.
MENDOTA BLOWER & BURNER REMOVAL & INSTALLATION BURNER WELDMENT THERMO DISK BLOWER ASSEMBLY REMOVABLE BURNER PAN VALVE ASSEMBLY MAIN BURNER ORIFICE BLOWER WIRING DIAGRAM WARNING: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing. BLOWER OPERATION The Mendota DXV Fireplace is designed so the blower operates at all times the fireplace is operating.
TROUBLE SHOOTING MENDOTA GAS DXV FIREPLACE SYMPTOM 1. Thin black coating (soot) forms on viewing glass. PROBABLE CAUSES CORRECTIVE ACTION A. Incorrect gas pressure B. Not enough combustion air Have gas supplier check for correct gas pressure (7" W.C. Nat. Gas; 11" W.C. LP Gas). If sooting continues open air shutter on burner (see "Gas Flame Adjustment" below). If sooting still continues, shut off unit and call Mendota service person.
CUSTOMER INFORMATION AND TROUBLE-SHOOTING MAXIMUM ALLOWABLE SURFACE TEMPERATURE Mendota Fireplaces comply with UL Standards for maximum surface temperatures on exposed combustible surfaces adjacent to the unit. The Maximum allowable surface temperature is 117° F. over ambient (room) temperature. Thus, if a room is 70° – 80° the exposed combustible surfaces immediately surrounding the Fireplace can have a surface temperature as high as 187° F. – 197° F. (Too hot to touch).
MAINTENANCE 1. ANNUAL MAINTENANCE OF MENDOTA UNITS IS REQUIRED. The following procedures must be performed each year by a Mendota approved service person. NOTE: Any adjustments to burner, pilot or logs must be done by a qualified Mendota service person. A. Clean all lint and dust build-up around the control. Inspect B. The condition of any wiring under the burner for melting or damage. C. Remove logs & coals and clean away any foreign matter (lint, Carbon, etc.) on the burner and logs.
3. THE VIEWING GLASS SHOULD BE CLEANED PERIODICALLY. Exterior glass may be cleaned with cleaner as desired. Interior glass - use KEL KEM "Polish Plus" (part # 65-06-00455) or comparable product. Do Not use oven cleaner or abrasive cleaners to clean glass. DO NOT CLEAN WHEN GLASS IS HOT. 4. PERIODIC VISUAL CHECK OF PILOT FLAMES IS REQUIRED. 6. PERIODIC VISUAL CHECK OF MAIN BURNER’S REAR AND FRONT FLAMES IS REQUIRED.
NATURAL TO LP GAS CONVERSION HA-30-00237 (OPTIONAL) This conversion must be made by a qualified service technician. 1. 2. 3. Install main burner orifice #65-14-00050 (#50 drill) see pg. 42 for location. Orifice is removed and installed with a ½” deep well socket and ratchet. Install pilot orifice #05-04-00036 (.014”) see pg. 45 for location. Remove and install pilot hood with 7/16” open-end wrench. (Pilot orifice thimble is located inside pilot hood base.
REPLACEMENT PARTS MENDOTA GAS DXV-35 FIREPLACE PART NO HA-29-00035 DESCRIPTION DOOR GASKET 65-06-00463 HA-30-00012 GLASS – FLAT DOOR FRAME ASS'Y. – FLAT 65-06-00623 HA-30-00040 35-01-00268 35-01-00240 35-01-00239 35-01-00275 GLASS – BAY DOOR FRAME ASS’Y - BAY 6 PIECE TIMBER FIRE LOG SET COALS 12 OZ bag FOR 1 PC LOG SET GLOWING INSWOOL PART NO 05-04-00035 05-04-00036 05-07-00067 DESCRIPTION PILOT ASS'Y. NAT. LP PILOT ORIFICE THERMOCOUPLE HA-29-00028 HA-29-00029 MAIN ORIFICE (Nat.
MENDOTA DESIGNER FRONTS INSTALLATION INFORMATION The following Designer Fronts are available for the DXV-35 Fireplace: 1. 2. 3. 4. 5. Andover, Bentley Arched Door Kit or Prairie Rectangular Door kit with Fire screen with optional Overlays as listed below: a. Black Overlay b. Pewter Overlay c. Antique Copper Overlay d. 24K Gold Wellington Fire screen Front Black or 24K Gold Victoria Filigree Black or 24K Gold Tuscany Filigree Millennia Flat Grills in four optional color schemes as listed below: a.
Information specific to the installation of Millennia Flat Grills, Victoria Filigrees and Tuscany Filigrees The Millennia Flat Grills, Victoria Filigree and Tuscany Filigree are designed to be “inside-fit” trim kits. All of these trim kits fit within the inner perimeter of the Fireplace’s Faceplate and remain flush within the Faceplate’s front surface, see Figure below.
" Label Representation" DXV35 TIMBER FIRE Also for use in mobile (manufactured) homes after first sale of home. Tested to ANSI Z21.88 (2002) - CSA 2.33 (2002) _________________________________________________ WARNING: Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury, or loss of life. Refer to the owner's information manual provided with this appliance.
MENDOTA WARRANTY QUALIFICATION & SERVICE REFERENCE FORM As a part of Mendota's on-going program of customer satisfaction, this Form verifies proper installation and operation. It is important as a reference for future service. It insures long life and trouble-free operation of Mendota fireplaces & stoves and qualifies the owner for Mendota's lifetime limited warranty. Owner should sign Form when completed and mail a copy along with Warranty Registration to Mendota.
OPTIONALLY, PLEASE REGISTER AT OUR WEBSITE AT: WWW.JOHNSONGAS.COM/MENDOTA-REGISTRATION.
TAPE SHUT -------------------------------------------------------------------------------------------------------------------------------------------------------- POSTAGE NEEDED JOHNSON GAS APPLIANCE COMPANY 520 E AVENUE N.W.
MENDOTA EXTENDED LIFETIME PROTECTION AND LIMITED WARRANTY MENDOTA DXV-35 DIRECT VENT FIREPLACE Mendota Division of Johnson Gas Appliance Company, 520 E Avenue N.W. Cedar Rapids, Iowa 52405, extends this Extended Lifetime Protection and Limited Warranty to the original purchaser of a Mendota DXV Fireplace, Serial Number, which is limited and used under normal home conditions. STANDARD WARRANTY: JOHNSON GAS APPLIANCE CO.
Johnson Gas Appliance Company 520 E Avenue N.W. - Cedar Rapids, IA 52405 Mendota Hearth Division WEBPAGE: www.johnsongas.com or www.mendotahearth.
