MENDOTA GAS DIRECT VENT FIREPLACE Model DXV-45 SHOWN WITH OPTIONAL PRAIRIE DOOR KIT AND OVERLAY INSTALLATION & OPERATING INSTRUCTIONS NO. 0406 WARNING: This product must be installed by a licensed plumber or gas fitter when installed in the commonwealth of Massachusetts. 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 LOCATING THE FIREPLACE AND GENERAL INFORMATION SPECIFICATIONS & CLEARANCES INSTALLATION INSTRUCTIONS GAS SUPPLY REQUIREMENTS GAS PRESSURE REQUIREMENTS EXTERIOR VENTING LOCATIONS AND RESTRICTIONS FLUE VENTING INSTRUCTIONS FLUE VENTING REQUIREMENTS FLUE VENTING COMPONENTS MINIMUM RISE THROUGH-THE-WALL VENTING ELEVATED THROUGH-THE-WALL VENTING VERTICAL THROUGH-THE-ROOF VENTING DESIGNER FRONTS INSTALLATION INFORMATION AND CAUTIONS GLASS DOOR OPERATION COAL BED AND LOGS INSTALLATION INSTALLATIO
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.
LOCATING THE FIREPLACE AND GENERAL INFORMATION Your Mendota Gas Fireplace has a state-of-the-art co-axial direct vent, sealed combustion system. This advanced, highly efficient system brings in outside air for combustion, has a separate exhaust vent and efficiently heats and re-circulates room air. The Mendota system maintains high air quality, maximizes efficiency and assures proper operation.
DXV-45 GAS DIRECT VENT FIREPLACE SPECIFICATIONS & CLEARANCES DIRECT VENT SIZE: 5" I.D., 8" O.D.
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 with the most current edition of the National Fuel Gas Code ANSI Z223.1, also known as NFPA 54.
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. can be the result of changes in gas pressure or improper gas pressure at the time of the installation.
EXTERIOR VENT LOCATIONS AND RESTRICTIONS FIGURE 3: Exterior Vent Locations All vent measurements given below are from the center of the vent cap.
FLUE VENTING INSTRUCTIONS The Mendota Fireplace must be vented using DuraVent or Amerivent or Security venting system.
FLUE VENTING REQUIREMENTS FOR NG AND LPG NOTE: IF A 90º ELBOW IS CONNECTED DIRECTLY TO THE FLUE OULET, THE MAXIMUM HORIZONTAL DISTANCE FROM THE FLUE OUTLET CENTERLINE TO THE OUTSIDE WALL IS 24". A MAXIMUM OF THREE (3) 90ºELBOWS ARE ALLOWED PER INSTALLATION. EACH 90º ELBOW USED, AFTER THE FIRST 90O ELBOW, REDUCES THE MAXIMUM HORIZONTAL DISTANCE BY 3'. EACH 45O ELBOW USED, AFTER THE FIRST 90O ELBOW, REDUCES THE MAXIMUM HORIZONTAL DISTANCE BY 1-1/2’.
5"/ 8"FLUE VENTING COMPONENTS FOR NG AND LPG ITEM # 1 1 1 1 2 3 4 5 9 10 10 11 12 13 14 15 16 17 PART # 45-01-00222 45-01-00223 45-01-00224 45-01-00225 45-01-00228 45-01-00227 45-01-00229 45-01-00226 45-01-00239 45-01-00236 45-01-00237 45-01-00238 45-01-00230 45-01-00234 45-01-00231 45-01-00235 45-01-00221 AA-11-00458 DESCRIPTION 12" VENT STACK 5" / 8" 24" VENT STACK 5" / 8" 36" VENT STACK 5" / 8" 48" VENT STACK 5" / 8" 90ºGALVANIZED ELBOW 5" / 8" 45º GALVANIZED ELBOW 5" / 8" ADJUST.
A-1 MINIMUM RISE THROUGH-THE-WALL VENTING FOR NG AND LPG WARNING: ALWAYS USE HEAT SHIELD (#AA-11-00458) WHEN EXTERIOR WALL COVERING IS MADE OF VINYL, WOOD OR OTHER COMBUSTIBLE MATERIALS. HEAT SHIELD (#AA-11-00458) IS INCLUDED WITH THE DXV45 FIREPLACE. HEAT SHIELD #AA-11-00458 HEAT SHIELD AA-11-00458 Y The horizontal distance from flue outlet center to outside wall must not exceed 24" if a 90o elbow is connected directly to flue outlet.
A-2 ELEVATED RISE THROUGH-THE-WALL VENTING FOR NG AND LPG The minimum vertical rise from top of fireplace, is 48 in. when used with the maximum horizontal run of 16 ft. For other venting configurations within these maximum limits see pg. 10. NOTE: All horizontal runs of vent pipes must have a ¼" rise for every 1' of run toward the termination. Never allow the vent to run downward. This will cause high temperatures and the possibility of a fire.
B-1 VERTICAL THROUGH-THE-ROOF VENTING FOR NG AND LPG The maximum vertical run of vent pipe is 36 ft. from the top of the fireplace. The fireplace will support a run of a maximum of 36 ft. Maintain 1" air space clearances on all sides of vents (2" above horizontal vents). IMPORTANT: REFER TO DRAWING ON PAGE 10 & 11 WHILE FOLLOWING THESE INSTRUCTIONS. 1. Place the fireplace in its desired location. Drop a plumb bob from the ceiling to the center position of the fireplace flue exit.
8. 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 "H" DIMENSION FEET METERS 2 .6 2 .6 4 1.2 6 1.8 8 2.4 1" 9. Complete installation with storm collar and vent cap.
MENDOTA DESIGNER FRONTS INSTALLATION INFORMATION The following Designer Fronts are available for the DXV-45 Fireplace: 1. 2. Andover Arched Door Kit with Firescreen with optional Overlays as listed below: a. Black Andover Overlay b. Pewter Andover Overlay c. Antique Copper Andover Overlay d. Gold Andover Overlay Prairie Rectangular Door Kit with Firescreen with optional Overlays as listed below: a. Black Prairie Overlay b. Pewter Prairie Overlay c. Antique Copper Prairie Overlay d.
Hearth Protection Pad Installation Information when planning to Install the Andover or Prairie Fronts Any hearth protection pad installed in front of the DXV-45 Fireplace must be designed, built and installed so that the hearth protection pad’s top surface is flush with the bottom-most surface of the DXV45 Fireplace. See the diagram to the right.
DXV DOOR OPERATION TO REMOVE DOOR 1. Place both thumbs on lower doorframe directly above Spring Loaded Door Holding Bar. 2. Reach fingers under Bar and pull Bar straight out from Fireplace front. 3. Pull Bar down and move bar inward until bar clears doorframe - then release. 4. Repeat procedure for opposite Holding Bar. 5. Carefully lift door straight up until doorframe "clears" the 3 Door Holding Tabs on top of firebox. 6. Pull door directly out from firebox front TO REPLACE DOOR 1.
COAL BED AND LOGS INSTALLATION With door removed, proceed as follows: Carefully unpack the shipping boxes containing the coal bed sections and logs and remove them gently from the foam packing. Note: Each coal bed and log is ”lettered” on its underside. 1. Locate the 3 bags of embers and coals: LARGE CHUNK COALS - SMALL COALS - GLOWING EMBERS 2. Place Coal Bed “A” between front burner and middle burner – to right of pilot. Front Edge of Coal Bed “A” should sit below the Front Burner Tube.
4. Place right rear log “B” behind back burner as shown. Guide log pins into holes into air box. 5. Place left rear log “C” behind back burner as shown. Guide log pins into holes into air box. 6. Place charred log “D” as shown – Between rear burner “U-tube” runners Place log pins into air box holes.
7. Place left front log “E” as shown. Front lower end against left grate upright, and right upper end over pin in charred log “D”. 8. Place right log “F” as shown – Front lower end against right grate upright, and right upper end over pin in charred log “D”. 9. Carefully place large chunk coals on coal bed “A” - between front and middle burner - in a loose, checkerboard arrangement. Make sure that the coals are not packed too tightly and are only one layer deep.
10. Place center forked log “G”as shown. Place front end against grate upright (second from right) and left rear branch over center shoulder on charred log “D”. 11. Place small log “H” with smooth branch under left log “E”. This log may be placed in front of pilot, BUT DO NOT REST AGAINST PILOT. 12. Place small log “I” between logs “E & “G” as shown. There is not one correct location for this log – it may be placed as desired. The location shown assures the best coal bed glow.
13. With glass removed, light pilot, and check for smooth ignition. Reinstall door, and check again for smooth ignition. If any delay occurs, make sure that no coals or embers are blocking pilot from front or rear burner holes. COMPLETED LOGS AND COAL BED ASSEMBLY EVALUATION See the picture, shown below. This picture shows the recommended log positions. Slight variations in the position of each log is allowed.
The following Check Off Lists must be completed prior to final operation of the Fireplace, or manufacturer's warranty and liabilities will be voided: 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. 1000º silicate sealant (Millpak #65-0600909) must be used on the inner pipe joints of all pipe sections (Dura Vent only).
LIGHTING INSTRUCTIONS IMPORTANT: Be sure all items on "INSTALLATION CHECK OFF LIST" (pg. 24) 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. Remove glass door (see pg. 18) - ALWAYS LIGHT PILOT WITH GLASS REMOVED! 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".
14. To reduce heat output, turn Hi/Lo Knob counterclockwise to desired temperature (see FIGURE 5: Gas Valve). Heat output can be reduced to 23,000 BTUH using the Hi-Lo Control. NEVER "over fire" by increasing BTUH above nameplate specifications. NEVER turn down (reduce) pilot flame below the minimum 250 millivolts. 15. To reduce the flame and heat down to 6500 BTUH., use the rocker switch (see step 7) to turn off rear burner. NOTE: The rear burner is controlled by a 9 Volt DC solenoid valve.
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 the fireplace. 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 AIRBOX REMOVABLE BURNER PAN/ VALVE ASSEMBLY BLOWER ASSEMBLY NOTE: THE BURNER AND OTHER PARTS SHOWN ABOVE ARE FOR REPRESENTATION PURPOSES ONLY AND MAY NOT EXACTLY DEPICT WHAT IS INCLUDED IN YOUR FIREPLACE. BLOWER OPERATION The Mendota DXV Fireplace is designed so the blower operates at all times the fireplace is operating. The blower output can be regulated with the rheostat (included), but it must be "on" at all times the burner is "on".
TROUBLESHOOTING MENDOTA GAS DXV FIREPLACE SYMPTOM PROBABLE CAUSES CORRECTIVE ACTION 1. Thin black coating (soot) forms on viewing glass. A. Incorrect gas pressure Have gas supplier check for correct gas pressure (7" W.C. Nat. Gas; 11" W.C. LP Gas). If sooting continues open-air shutter on burner (see "Gas Flame Adjustment" below). If sooting still continues, shut off unit and call Mendota service person. NOTE: To clean glass - remove glass and wipe glass with cloth or paper towel. B.
CUSTOMER INFORMATION AND TROUBLE-SHOOTING MAXIMUM ALLOWABLE SURFACE TEMPERATURES 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 built-up around the control. Inspect the condition of any wiring under the burner for melting or damage. B. Remove logs & coals and clean away any foreign matter (lint, carbon, etc.) on the burner and logs.
NATURAL TO LP GAS CONVERSION HA-42-00072 This conversion must be made by a qualified service technician. A Natural Gas to LPG conversion kit #HA-42-00072 must be purchased separately for the DXV45 Fireplace to burn LPG. LP Conversion Kit #HA-42-00072 contains the following parts: One LP Pressure Regulator, One LP Pilot Orifice Thimble, One Cap Orifice drill #53 (for rear burner) and One Cap Orifice drill #3/64 (for front burner). Specifically, identify the Rear and Front Burner Cap Orifices.
Figure 10 33
REPLACEMENT PARTS MENDOTA DXV-45 FIREPLACE PART NO HA-41-00047 DESCRIPTION DOOR GASKET 65-06-00658 HA-42-00015 GLASS - FLAT DOOR FRAME ASS'Y. – FLAT 35-01-00303 LOG SET 35-01-00239 35-01-00302 35-01-00311 35-01-00304 10-03-00068 05-02-00308 HA-42-00008 05-02-00306 HA-42-00011 70-01-00079 GLOWING INSWOOL FIREBRICK KIT LARGE CHUNK COALS EMBER FLOOR SET REAR FLAME WIRING W/ SWITCH REAR FLAME ON/OFF VALVE VALVE ASSEMBLY WITH LP CONVERSION VALVE NAT.
LISTED DIRECT VENT GAS FIREPLACE HEATER POÊLE AU GAZ HOMOLOGUE’, A AÉRATION DIRECTE NOT FOR USE WITH SOLID FUEL (NE DOIT PASÉ UTILISÉ AVEC UN COMBUSIBLE SOLIDE) Manufactured by (Fabriqué par): JOHNSON GAS APPLIANCE CO. CEDAR RAPIDS, IOWA CERTIFIED FOR CANADA HOMOLOGUÉ POUR LE CANADA Tested to (Testé aux normes) ANSI Z21.88-2002 • CSA 2.33-2002 • CAN/CGA 2.17-M91 and ANSI Z21.50-1996.
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.
TAPE SHUT --------------------------------------------------------------------------------------------------------------------------------------------------------- POSTAGE NEEDED JOHNSON GAS APPLIANCE COMPANY 520 E AVENUE N.W.
AND LIMITED WARRANTY MENDOTA DXV-45 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 www.johnsongas.com or www.mendotahearth.
