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Lennox Hearth MLDVTCD-35NM User's Manual

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1. LENNOX gt INSTALLATION INSTRUCTIONS MLDVTCD Direct Vent HEARTH PRODUCTS Contemporary Design MERIT series Gas Fireplaces P N 506015 03 Rev 06 2011 MODELS This manual is part of a set of three supporting this product Refer to manual 506017 02 for Care and Operation information MILLIVOLT ELECTRONIC and 506019 40 for Facade Installation Instructions MLDVTCD 35NM MLDVTCD 35NE Ce manuel est disponible en francais simplement en faire la demande Num ro de la pi ce 506223 05 INSTALLER Leave this manual with the appliance CONSUMER Retain this manual for future reference INSTALLATEUR Laissez cette notice avec l appareil Intertek CONSOMMATEUR Conservez cette notice pour consultation ult rieure A WARNING AVERTISSEMENT AVISO HOT GLASS WILL CAUSE UNE SURFACE VITREE CHAUDE EL VIDRIO CALIENTE BURNS PEUT CAUSER DES BRULURES CAUSARA QUEMADURAS DO NOT TOUCH GLASS LAISSER REFROIDIR LA SURFACE USTED DEBE NUNCA UNTIL COOLED VITREE AVANT D Y TOUCHER TOCAR EL VIDRIO CALIENTE NEVER ALLOW CHILDREN NE PERMETTEZ JAMAIS A UN ENFANT LOS NINOS DEBEN NUNCA TO TOUCH GLASS DE TOUCHER LA SURFACE VITREE TOCAR EL VIDRIO WARNING If the information in these instructions AVERTISSEMENT Assurez vous de bien suivre les is not followed exactly a fire or explosion may instructions donn es dans cette notice pour r duire au result causing property
2. MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS TABLE OF CONTENTS Packaging sss Page 2 Introduction Page 2 General Information Page 2 Requirements for the Commonwealth of Massachusetts Page 4 New York City Approval Page 4 Cold Climate Insulation Page 5 Manufactured Home Requirements Page 5 LOCA ON Page 5 Vent Termination Clearances Page 6 Appliance and Vent Clearances Page 8 Detailed Installation Steps Page 9 Typical Installation Sequence Page 9 Step 1 Page 9 Fireplace and Framing Specifications Page 10 Step 2 Routing Gas Line Page 11 Step 3 Install the Venting System Page 12 Vertical Termination Systems Page 13 Vent Section Length Chart Page 13 Vertical Vent Tables and Figures Page 16 Horizontal Termination System Page 17 Horizontal Vent Tables and Figures Page 20 Venting Using Flexible Vent Pipe Page 23 Step 4 Field Wiring Page 24 Step 5 Optional Blower Kit Wiring Page 25 Step 6 Connecting Gas Line Page 26 Step 7 Verifying Appliance Operation Page 27 Step 8 Installing Contemporary Media Page 28 Step 9 Installing Glass Door Page 30 Step 10 Burner Adjustments Page 30 S
3. 3 Ot The Hole nician Air Shutter Ref Air shutter Patent e Ensure front glass panel are V S Pat 5 563 603 in place and sealed during adjustment Figure 45 Burner Air Shutter Adjustment A CAUTIONS e Soot will be produced if the air shutter is closed too much Any damage due to carboning resulting from improperly setting the air shutter is not covered under the warranty The air shutter door and nearby appliance surfaces are hot Exercise caution to avoid injury while adjusting flame appearance Ensure the air shutter setting is at least equivalent to 1 2 of the air hole exposed when operating the unit with pro pane gas Locate and adjust the air shutter to the River Stone And Beach Sand With Porcelain Panels Shown standard setting as shown in Figure 45 Light appliance follow lighting procedure Figure 46 Burner Flame Appearance Model MLDVTCD 35 on lighting label in control compartment or see the Care and Operations manual 3 Allow the burner to operate for at least 15 minutes while observing the flame con tinuously to ensure that the proper flame appearance has been achieved see Figure 46 f the following conditions are present adjust accordingly f flame appears weak or sooty adjust the air shutter incrementally to a more open position until the properflame appearance is achieved f flame stays lowered blue adjust the air shutter incrementally to a more closed positio
4. Hi 10 0 WC Lo 6 3 WC 1 57 kPa 2 49 kPa Table 3 Test gauge connections are provided on the front of the millivolt and electronic gas control valve identified IN for the inlet and OUT for the manifold side The control valves have a 3 8 10mm NPT thread inlet and outlet side of the valve Hi 3 5 WC 0 87 kPa Propane tanks are at pressures that will cause damage to valve components Verify that the tanks have step down regulators to reduce the pressure to safe levels These appliances must be isolated from the gas supply piping system by closing their individual manual shut off valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1 2 psig 3 5 kPa These appliances and their individual shut off valves must be disconnectedfrom the gas supply piping system during any pressuretesting ofthat system at pressures greater than 1 2 psig 3 5 kPa These appliances must not be connected to a chimney or flue serving a separate solid fuel burning appliance Orifice Sizes Sea Level to High Altitude All Models These appliances are tested and approved for installation at elevations of 0 4500 feet 0 1372 meters above sea level using the standard burner orifice sizes marked with an in Table 4 Forelevations above 4500 feet contact your gas supplier or qualified service technician Deration At higher elevations the amount of BTU fuel val
5. Si ce n est pas le cas prenez les tiquettes adh sives multilingues fournies avec ces instructions et proc dez comme suit 1 Rep rez l interrupteur ou le thermostat mural qui contr le le foyer v rifiez que l interrupteur contr le le fonctionnement du foyer en le faisant basculer de Marche Arr t et vice versa Nettoyez soigneusement la plaque murale de l interrupteur ou le thermostat mural pour liminer la poussi re et les traces de graisse ou d huile Collez l tiquette sur la surface de la plaque de l interrupteur mural qui contr le le foyer Figure A ou du thermostat mural Figure B Choisissez la langue qui est principalement parl e dans la r sidence du propri taire 2 Si une t l commande est utilis e pour contr ler le foyer nettoyez la soigneusement pour liminer la poussi re et les traces de graisse ou d huile Collez l tiquette sur le boitier de la t l commande Figure C Choisissez la langue qui est principale ment parl e dans la r sidence du propri taire 3 Si vous ne trouvez pas les tiquettes veuillez appeler Lennox Hearth Products ou votre distribu teur Lennox Hearth Products local pour recevoir gratuitement des tiquettes suppl mentaires tiquettes de remplacement n cat H8024 LENNOX HEARTH PRODUCTS 1 800 9 LENNOX Remarque Le texte anglais est rouge sur un support transparent Le texte francais et espagnol est blanc sur un support noir DIAGRAMMES DES TIQUETTES
6. The flex line method is acceptable in the U S A where local codes permit however Canadian requirements vary depending on locality Instal lation must be in compliance with local codes These appliances are equipped with a gas flex line for use in connecting the unit to the gas line See Figure 38 for flex line description The flex line is rated for both natural and propane gas A manual shut off valve is also provided with the flex line The gas control valve is located in the lower control compartment Access the valve compartment by removing the lower control compartment panel see Figure 39 by sliding and pulling the panel forward The panel is mounted at the extreme right and lefthand sides through slots Engage the tabs into the slots in the panel The millivolt and electronic control valve has a 3 8 10 NPT thread inlet port Secure all joints tightly using appropriate tools and sealing compounds ensure propane resistant compounds are used in propane ap plications Itis recommended to seal around the gas line to prevent cold air leakage Gas line connection may be performed largely outside of the confines of the control compart ment and without having to enter the firebox behind the glass Proceed as follows Acquire the shut off valve and gas lex line and pull the assembly forward out of the compart ment Separate the shut off valve from the gas flex line Determine the length of pipe needed to route t
7. must be used in this application Figure 23 Top Vent STRAIGHT H Ceiling Firestop Spacer SV4 5VF A Wall Firestop Spacer SV4 5HF When using Secure Flex use Firestop Spacer SF4 5VF O When using Secure Flex use Firestop Spacer SF4 5HF Table A VMinimum Lese sm bow Only 0 305 gt 048 2 0 610 Es 4 4 572 0 914 6 096 1 219 V V4 H 40 feet 12 2 m Max 20 feet 6 096 meters Max Example If 20 feet of H horizontal vent run is needed then 4 feet minimum of V vertical vent will be required This table shows a 1 V to 5 H ratio For every 1 foot of V vertical you are allowed 5 feet of H horizontal run up to a maximum horizontal run of 20 feet An elbow is acceptable as 1 foot of vertical rise except where an elbow is the only vertical component in the system See Figure 29 Figure 24 Top Vent TWO 90 DEGREE ELBOWS NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS VERTICAL VENT FIGURES TABLES CONTINUED H H4 Maximum meter teet Elbow Only 1 Go 2 sm 609 4 H 20 feet 6 096 m Max V V4 H H4 40 ft 12 2 m Max Table B When using Secure Flex use Firestop Spacer SF4 5VF When usin
8. 100353019PRT 002 to ANSI Z21 50 in Canada CSA 2 22 and CAN CGA 2 17 M91 in both USA and Canada as vented gas fireplaces Both millivolt and electronic versions of these appliances are listed by ETL Intertek for installation in bedrooms and Manufac tured Homes Misc Codes Standards The Installation must conform to local codes in the absence of local codes with the National Fuel Gas Code ANSI Z223 1 NFPA 54 latest edition In Canada the current CAN CSA B149 1 installation code The appliance when installed must be electri cally grounded and wired in accordance with local codes or in the absence of local codes with the Wational Electrical Code ANSI NFPA 70 latest edition or the Canadian Electrical Code CSA C22 1 latest edition Provide adequate clearances around air open ings and adequate accessibility clearance for service and proper operation Never obstruct the front openings of the appliance These appliances are designed to operate on natural or propane gas only The use of other fuels or combination of fuels will degrade the performance of this system and may be dangerous These fireplaces are decorative and are designed to provide supplemental heat Therefore it is advisable to have an alternate primary heat source when installed in a dwelling These appliances must not be connected to a chimney or flue serving a separate solid fuel burning appliance Millivolt Models The mil
9. 111 91 94L09 SF HTSS 94104 5 1255 94105 SFKIT18SS 94106 5 2455 94107 SFKIT36SS 94108 SFKIT48SS 56L74 SFVT30 56L75 SFVT45 Horizontal Square Termination without Flex Hex Square Term with 12 in 305 mm of compressed Flex Flex Square Term with 18 in 457 mm of compressed Flex Flex Square Term with 24 in 610 mm of compressed Flex Flex Square Term with 36 in 914 mm of compressed Flex Hex Square Term with 48 in 1219 mm of compressed Flex Horizontal Termination Small Square for Flex Vent Flex Small Termination with 12 in 305mm Flex Vent Flex Small Termination with 18 in 457mm Flex Vent Hex Small Termination with 24 in 610mm Flex Vent He in Small Termination with 36 in 914mm Flex Vent Flex Small Termination with 48 in 1219mm Flex Vent Vertical Termin for Flex flat to 6 12 with Flex Adapter section of rigid vent roof support collar assembly roof flashing and storm collar Vertical Termin for Flex 6 12 to 12 12 with Flex Adapter section of rigid vent roof support collar assembly roof flashing and storm collar NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE Arch Top 3X 3 Chase Top Shroud Kit Open Top 3X3 Chase Top Shroud Kit Open Top 4X4 Chase Top Shroud Kit Open Top 4X 6 18 ft 5 49 m compressed Flex 12 ft 3 66 m compressed Flex Mil Pac Black Hi Temperature Sealant Mil Pac Black Hi
10. 25 mm on sides and 1 25 mm on the bottom A Frame ceiling opening Use a plumb line from the ceiling above the appliance to locate center of the vertical run Cut and or frame an opening 10 1 2 x 10 1 2 267mm x 267mm inside dimensions about this center mark Figure 16 10 1 2 Min LES gt 10 1 2 Min Framing 267mm Framing Figure 16 B Attach vent components to appliance Secure Vent SV4 5 direct vent system compo nents are unitized concentric pipe components featuring positive twist lock connections see Figure 17 All of the appliances covered in this document are fitted with collars having locking inclined channels The dimpled end of the vent com ponents fit over the appliance collar to create the positive twist lock connection Align the dimple 4 places of the upper vent section with the opening of the locking incline channel on the lower vent section or appliance collar Twist vent component clockwise to engage and seal until arrow and dimple align A Arrow Dimple 1 1 Locking Incline Channel Connected Vent Sections Appliance Collar or Vent Section Figure 17 Toattachaventcomponenttothe appliance collar align the dimpled end over the collar adjusting the radial alignment until the four locking dimples are aligned with the inlet of the four inclined channels on the collar refer to Figure 17 Push the vent component against the collar until it fully
11. Figure 54 Step 9 Reassemble the remaining components by reversing the procedures outlined in the preceding steps Step 10 Attach the conversion label provided in the conversion kit to the rating plate on the appliance Step 11 Turn on gas supply and test for gas leaks See Test All Connections For Gas Leaks on Page 27 Step 12 Attach manometer to the manifold side pressure test fitting and verify manifold pressure reads 3 5 inches water column 0 87 kPa for natural gas and 10 0 inches water column 2 49 kPa for propane gas ALWAYS TEST PRESSURES WITH THE VALVE REGULATOR CONTROL AT THE HIGHEST SETTING 37 LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS Lennox Hearth Products reserves the right to make changes at any time without notice in design materials specifications prices and also to discontinue colors styles and products Consult your local distributor for fireplace code information HEARTH PRODUCTS Printed in U S A 2009 Lennox Hearth Products P N 506015 03 Rev F 06 2011 1508 Elm Hill Pike Suite 108 Nashville TN 37210
12. Required Fireplace gt 28 Recommended Figure 48 Contemporary Facade Dimensions NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS Step 12 ATTACHING SAFETY IN OPERATION WARNINGS It is the installers responsibility to ensure these warnings are properly affixed during installation These warning labels are a critical step in informing consumers of safe operation of this appliance ATTACHING SAFETY IN OPERATION WARNINGS Your fireplace has been furnished with safety instruc tion labels that are to be affixed to the operation and control point of the fireplace A safety instruction label should be affixed to the wall switch plate where the fireplace is turned on and off See Figure A or wall thermostat See Figure B and if used on the remote control handheld transmitter Figure C The warnings should already have been putin place when the fireplace initial set up was completed If they are not affixed at these spots locate the multi lingual adhesive labels provided with these instructions and proceed as follows 1 Locate the wall switch or wall thermostat that controls the fireplace verify the switch operates the fireplace by turning it on and off Clean the wall switch plate or wall thermostat thoroughly to remove any dust and oils Affix the label to the surface of the plate of t
13. Temperature Sealant Bulk Pack 12 Gear Clamp 4 5in 114 mm for Flex 6 pieces Gear Clamp 7 5 in 190 5 mm for Flex 6 pieces H2248 SF4 5HF 10 Firestop Spacer 10 Pack Horizontal 3 1 1 spacing H2249 SF4 5VF 10 Firestop Spacer 10 Pack Vertical 1 1 1 spacing H1985 CTSO 33 H1987 CTSO 44 H1986 CTSO 46 60110 SF 18 98K03 SF 12 10K81 SFMP 89L40 91L66 SF GC4 6 91L67 SF GC7 6 SFMP 12 compressed flex vents can be expanded up to two times 35 36 LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS GAS CONVERSION KITS INSTALLATION INSTRUCTIONS A WARNING Step 1 TURN OFF THE GAS SUPPLY TO THE This conversionkitshall be installed by a qualified service agency in accor x usps de aaa En UCR EE ENT COEUR je circuit breaker Ensure appliance is COLD requirements of the authority having jurisdiction Ifthe information in these instruction is not followed exactly a fire explosion or production of d monoxide may result causing property damage personal injury or loss of life The qualified service agency is responsible for the proper installation CEN WEN ON of this kit The installation is not proper and complete until the operation of the converted appliance is checked as specified in the manufacturer s ATTENTION AVANT D EFFECTUER instructions supplied with the kit The qualified serv
14. above any horizontal inclined vent component Note See Page 9 Step 1 forclearance requirements to the nailing flange located at each side of the unit and any screw heads adjacent to it Hearth Extension A hearth extension is not required with this appliance If a hearth extension is used do not block the lower control compartment door Any hearth extension used is for appearance only and does not have to conform to standard hearth extension installation requirements Shelf Height To provide forthe lowest possible shelf surface the venting attached to the top vent should be routed in a way to minimize obstructions to the space above the appliance Do not insulate the space between the appliance and the area above it see Figure 7 The minimum height from the base of the appliance to the underside of combustible materials used to construct a utility shelf in this fashion is shown in Figure 7 Wall Finishes Surrounds Mantels Note Combustible wall finish materials and or surround materials must not be allowed to encroach the area defined by the appliance front face black sheet metal Never allow combustible materials to be positioned in front of or overlapping the appliance front face see Figure 47 on Page 32 Non combustible materials such as surrounds and other appliance trim may be installed on the appliance face with these exceptions they must not cover any portion of the removable glass panel Vertical installation
15. engages then twist the component clockwise running the dimples down and along the incline channels until they seat at the end of the chan nels The unitized design of the Secure Vent components will engage and seal both the inner and outer pipe without the need for sealant or screws If desired a 6 x 1 2 screw may be used at the joint but is not required as the pipe will securely lock when twisted Note An elbow may also be attached to the appliance collar Attach in the same manner as you would a vent section C Attach vent components to each other Other vent sections may be added to the previously installed section in accordance with the requirements of the vertical vent Figures and Tables To add another vent component to a length of vent run align the dimpled end over the inclined channel end of the previously installed section adjusting the radial alignment until the four locking dimples are aligned with the inlets of the four incline channels of the previous section NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE Push the vent component against the previous section until it fully engages then twist the componentclockwise running the dimples down and along the incline channels until they seat at the end of the channels This seating position is indicated by the alignment of the arrow and dimple as shown in Figure 17 D Install firestop spacer at ceiling When us ing Secure Vent use SV4 5VF firestop sp
16. x specifications colors and prices are subject to change or discontinu Frame ceiling opening Use a plumb line from the ceiling above the appliance to locate ance without notice center of the vertical run Cut and or frame an opening 10 1 2 x 10 1 2 267 mm x 267 mm inside dimensions about this center mark see Figure 16 on Page 14 NOTE It is recommended that the gas be stubbed in from the left side only NOTE Eyebrow ELECTRICAL INLET hood shown KNOCKOUT 2 3 4 X 2 70 X 51 COVER PLATE With KNOCKOUT 16 406 Right Side Only k GAS INLET L KNOCKOUT CONCENTRIC FLUE Other Side FLUE 4 1 2 114 COMBUSTION AIR OPTIONAL 7 1 2 190 ELECTRICAL INLET KNOCKOUT REQUIRING A FIELD PROVIDED 9 1 4 235 JUNCTION BOX Either Side Top View MLDVTCD 35 EN 32 1 4 Figure 11 NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS FIREPLACE FRAMING SPECIFICATIONS Model No A B C D E in 35 1 4 57 1 2 405 8 28 3 4 13 3 4 MLDVTCD 35 Back wall of chase enclosure including any finishing materials Figure 12 Corner Framing with Horizontal Termination Step 2 ROUTING GAS LINE Route a 1 2 13mm gas line to the left side of the appliance as shown in Figure 13 Gas lines must be route
17. 14 All of the appli ances covered in this document are fitted with collars having locking inclined channels The dimpled end of the vent components fit over the appliance collar to create the positive twist lock connection A Plan the vent run Analyze the vent routing and determine the types and quantities of sections required 4 1 2 114 mm 10 1 2 267 mm 22 1 2 572mm 34 1 2 876 mm and 46 1 2 1181 mm net section lengths are available It is recommended that you plan the vent lengths so that a joint does not occur at the intersection of ceiling or roof joists Make allowances for elbows as indicated in Figure 19 on Page 15 NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE Ceiling Firestop Spacer SV4 5VF Wall Firestop Spacer SV4 5HF Maintain a minimum 1 25 mm clearance to combustibles on the vertical sections Clear ances for the horizontal runs are 3 76 mm on top 1 25 mm on sides and 1 25 mm at the bottom B Frame exterior wall opening Locate the center of the vent outlet on the exterior wall according to the dimen sions shown in Figure 11 on Page 10 Cut and or frame an opening 10 1 2 x 12 1 8 267 mm x 308 mm inside dimensions about this center C Frame ceiling opening If the vertical route isto penetratea ceiling use plumb line to locate the center above the appliance Cutand orframe an opening 10 1 2 x 10 1 2 267 mm x 267 mm inside dimension
18. 3 008 9 t o o 4 ua 95 0 2 o o jJ 2 4 uv os 9 o 5 o 0 6 1185 9851 1 1 o 3 o s 26 105 o o 1 3 130 5 10875 o t 3 o s 195 125 0 o 6 o o 6j 188 15 o o o 5 4 139 5 11 625 0 o o o 3 3 pws nae 1 v fo 4 oe 5 Note Convert inches into metric equivalent measurement as follows Millimeters mm Inches x 25 4 Centimeters cm Inches x 2 54 Meters M Inches x 0254 NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE CE CR EC i e T LL 144 12 3 5 12 5 154 5 12 875 160 5 13 375 172 5 14 375 177 14 75 15 25 15 5 190 5 15 875 196 5 16 37 5 17 125 207 17 25 11 5 17 625 17 5 18 125 9 5 19 125 232 5 19 375 7 19 75 5 20 125 BE EE 1 ee ENE 3 5 MBESEE 1 1 olal are N m ro ro AN N ajo prg gt S co m DES In o gt ames cC N N N N N e D NS N E wo n2 5 2 ora wo N w a nN eio zu als Table 7 13 14 LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIO
19. 8 Note See Figure 28 on Page 19 showing wall thickness range when using SV4 5HT 2 termination kit When using Secure Flex Owall use Firestop Spacer Firestop Spacer SF4 5HF SV4 5HF See Table 8 on Page 20 as an aid in venting component selection HORIZONTAL VENT FIGURES TABLES for a particular range of exterior wall thicknesses Notes Figure 29 Top Vent ONE 90 DEGREE ELBOW ELBOW CONNECTION AT APPLIANCE e Secure Vent components rigid vent pipe and terminal are shown in the Figures Secure Flex components flexible vent pipe and terminal may also be used Table D Example If 20 feet of H hori zontal vent run is needed then Two 45 degree elbows may be used in place of one 90 degree elbow 4 feet minimum of V vertical The same rise to run ratios as shown in the venting Figures for 90 feet meter feet meter vent will be required elbows must be followed if 45 degree elbows are used 5 1 524 1 524 3 0 305 This table shows a 1 V to 5 H ratio For every 1 foot of SV4 5VF Secure Vent SF4 5VF Secure Flex firestop spacer must 10 3 048 2 0 610 verita vou are allowed fet be used anytime vent pipe passes through a combustible floor or ceil 4 572 0 914 OF h norizonia run up 10 ing SV4 5HF Secure Vent SF4 5HF Secure Flex firestop spacer t 4 572 3 0 914 maximum of 20 feet must be used anytime vent pipe passes through a
20. INSTALLATION Horizontal Inclined Run V4 5L6 12 24 36 48 Vent Sections Firestop Spacer SV4 5VF Every 5 ft 1 52 When Using Secure Flex Use Firestop Spacer SF4 5VF See Figure 15 on Page 13 or Figure 18 on Page 14 for vertical vent section support Fireplace aa Push the vent component against the previous section until it fully engages then twist the component clockwise running the dimples down and along the incline channels until they seat at the end of the channels This seating position is indicated by the alignment of the arrow and dimple as shown in Figure 17 Page 14 F Install firestop spacer at ceiling When using Secure Vent use SV4 5VF firestop spacer at ceiling joists when using Secure Flex use SF4 5VF firestop spacer If there is living space above the ceiling level the firestop spacer must be installed on the bottom side of the ceiling If attic space is above the ceiling the firestop spacer must be installed on the top side of the joist Route the vent sections through the framed opening and secure the firestop spacer with 8d nails or other appropriate fasteners at each corner Remember to maintain 1 25 mm clearance to combustibles framing members and attic or ceiling insulation when running vertical chimney sections Attic insulation shield H3907 may be used to obtain the required clearances indicated here See installation accessories Tables on Pages 34 and 35 G Supp
21. damage personal injury minimum le risque d incindie ou d explosion ou pour or death viter tout dommage mat riel toute blessure ou la mort Do not store or use gasoline or other flammable Ne pas entreposer ni utilizer d essence ni d autres vapeurs vapors and liquids in the vicinity of this or any other ou liquides inflammables dans le voisinage de cet appareil appliance ou de tout autre appareil WHAT TO DO IF YOU SMELL GAS QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ Do not try to light any appliance Ne pas tenter d allumer d appareil Do not touch any electrical switch do not use any Ne touchez aucan interrupteur Ne pas vous servir des phone in your building t l phones se trouvant dans le b timent o vous trouvez Immediately call your gas supplier from a Appelez imm diatement votre fournisseur de gaz depuis neighbor s phone Follow the gas supplier s un voisin Suivez les instructions du fournisseur instructions Si vous ne pouvez rejoindre le fournisseur de gaz e f you cannot reach your gas supplier call the fire appelez le service des incindies department L installation et l entretien doivent tre assur s par un Installation and service must be performed by a installateur ou un service d entretien qualifi ou par le qualified installer service agency or the gas supplier fournisseur de gaz LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES
22. e f there is smoke or soot present the air shutter opening should be increased e Themoreoffsets inthe vent system the larger the air shutter opening will need to be e An appliance operated with the air shutter opened too far may have flames that appear blue and transparent These weak blue and transparent flames are termed anemic Propane models may exhibit flames which candle or appear stringy If this is present and persists adjust the air shutter to a more closed position then operate the appliance for a few more minutes to ensure that the flame normalizes and the flames do not appear sooty The following chart is provided to aid you in achieving the correct air shutter adjustment for your installation Air Shutter Adjustment Guidelines Amount of Flame Air Shutter Primary Air Color Adjustment If air shutter is Flame will Air shutter closed too far be orange gap should be gt increased Air shutter gap should be decreased Flame will be blue If air shutter is open too far LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS Burner Air Shutter Adjustment Procedure ser Screw Main Burner Factory Air Shutter closed min position Air shutter adjustment should ee Model Natural Gas Propane Gas only be performed by a quali movreo Expose pait fied professional service tech
23. media if necessary handling carefully Millivolt Appliance Checkout The pilot flame should be steady not lifting or floating Flame should be blue in color with traces of orange at the outer edge The top 3 8 10 mm at the pilot generator thermopile and the top 1 8 minimum tip of the quick drop out thermocouple should be engulfed in the pilot flame NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE The flame should project 1 25 mm beyond the hood at all three ports see Figure 41 Replace contemporary floor media if removed for pilot inspection To light the burner turn ON the remote wall switch and rotate the gas valve control knob counterclockwise to the ON position ON will be at the top side of the valve MILLIVOLT Hood Igniter Rod 3 8 Min 9 mm Nozzels Thermopile Figure 41 Electronic Appliance Checkout To light the burner turn ON the unit mounted On Off switch or the optional remote wall switch Ensure the igniter lights the pilot The pilot flame should engulf the flame rod as shown in Figure 42 ELECTRONIC Figure 42 27 28 LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS Step 8 INSTALLING CONTEMPORARY MEDIA NOTE Turn off all electricity to the appliance before you install contemporary floor media A WARNING e DO NOT attempt to install
24. particular range of exterior wall thick nesses Wall Firestop Spacer SV4 5HF Figure 32 Top Vent THREE 90 DEGREE ELBOWS NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS H H Maximum V Minimum feet meter feet meter Ls ese chow ony s ese 1 Cu em 2 as Fs sm s osu Lm Low azw H H 20 feet 6 096 m Max V Vae H H4 40 ft 12 2 m Max Example 1 20 feet total H H horizontal vent run is needed then 4 feet minimum of V vertical vent will be required This table shows a 1 V to 5 H ratio For every 1 foot of V vertical you are allowed 5 feet of H H horizontal run up to a maximum horizontal run of 20 feet Anelbowis acceptable as 1 foot of vertical rise except where an elbow is the only vertical component in the system See Figure 29 LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS VERTICAL OR HORIZONTAL VENTING USING SECURE FLEX KITS AND COMPONENTS Secure Flex venting kits and components may be used in any venting application in place of rigid Secure Vent SV4 5 direct vent components All restrictions clearances and allowances that pertain to the rigid piping apply to the flexible venting S
25. BSTRUCTIONS NEW YORK CITY NEW YORK MEA Installation of these fireplaces are approved for installation in New York City in the US state of New York LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS COLD CLIMATE INSULATION For cold climate installations seal all cracks around your appliance with noncombustible material and wherever cold air could enter the room It is especially important to insulate outside chase cavity between studs and under floor on which appliance rests if floor is above ground level Gas line holes and other open ings should be caulked or stuffed with unfaced fiberglass insulation If the fireplace is being installed on a cement slab in cold climates a sheet of plywood or other raised platform can be placed underneath to prevent cold transfer to the fireplace and into the room It also helps to sheetrock inside surfaces and tape for maximum air tightness and caulk firestops MANUFACTURED HOME REQUIREMENTS This appliance may be installed in an aftermar ket permanently located manufactured home and must be installed in accordance with the manufacturer s instructions and the Manufac tured Home Construction and Safety Standard Title 24 CFR Part 3280 in the United States or the Standard for Installation in Mobile Homes CAN CSA 7240 MH Series in Canada Cetappareil peut tre install comme du mat ri el d
26. CES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS VERTICAL VENT FIGURES TABLES Notes e Secure Vent rigid vent pipe is shown inthe Figures Secure Flex flexible vent pipe may also be used It is very important that the horizontal in clined run be maintained in a straight no dips and recommended to be ina slightly elevated plane in a direction away from the fireplace of 1 4 rise per foot 20 mm per meter which is ideal though rise per foot run ratios that are smaller are accept able all the way down to at or near level SV4 5VF Secure Vent SF4 5VF Secure Flex firestop spacer must be used anytime vent pipe passes through a combustible floor or ceiling SV4 5HF Secure Vent SF4 5HF Secure Flex firestop spacer must be used anytime vent pipe passes through a combustible wall Two 45 degree elbows may be used in place of one 90 degree elbow The same rise to run ratios as shown in the venting Figures for 90 elbows must be followed if 45 degree elbows are used AN ELBOW IS ACCEPTABLE AS 1 FOOT OF VERTICAL RISE EXCEPT WHERE AN ELBOW IS THE ONLY VERTICAL COMPONENT IN THE SYSTEM See Figure 29 A WARNING Under no circumstances may sepa rate sections of concentric flexible vent pipe be joined together 40 feet 12 2 meters Maximum Ceiling Firestop Spacer SV4 5VF When using Se cure Flex use Firestop Spac er SF4 5VF A Vent Restrictor as shown in Figure 14 on Page 12
27. DE S CURIT AVERTISSEMENT Vitre et foyer EXTREMEMENT CHAUDS Risque de br lures graves Toujours tenir les enfants l cart du foyer BB s LENNOT Figure B NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE COLOCACION DE ADVERTENCIAS DE SEGURIDAD EN OPERACION Su chimenea incluye etiquetas de instrucciones de seguridad que deben colocarse en el punto de operaci n y control de la chimenea Se debe colocar una etiqueta de instrucciones de seguridad en la placa del interruptor de pared desde el cual se enciende y se apaga la chimenea ver la Figura A en el termostato de pared ver la Figura B y en el transmisor de control remoto Figura si se usa Las advertencias ya deben haberse colocado cuando se complet la instalaci n inicial de la chimenea Si no est n colocadas en estos lugares encuentre las etiquetas adhesivas multiling es proporcionadas con estas instrucciones y prosiga de la siguiente manera 1 Identifique el interruptor o el termostato de pared quecontrolala chimenea verifique queel interruptor opera la chimenea encendi ndola y apag ndola Limpie bien la placadelinterruptoro eltermostato de pared para quitar el polvo y aceite Pegue la etiqueta enlasuperficie dela placadelinterruptor que controla la chimenea Figura A o en el termostato de pared Figura B Seleccione el idioma que m s se habla en la casa 2 Si se usa un control remoto para controlar la chimenea encuentr
28. E 96K93 77L70 SV4 5L6 6 inch 152 mm Vent Section gy 77171 SV4 5L12 12 inch 305 mm Vent H3907 Section 8 77172 94 5124 24 inch 610 mm Vent H5816 Section 77173 54 5136 96 inch 914 mm Vent 96 92 Section lt gt 48 inch 1219 mm Vent 77L74 SV4 5L48 Section 87102 Telescopic Section 4 77L75 SV4 5LA 2 to 7 5 Rigid H5820 77L76 SV4 5E45 45 Degree Elbow A 99L03 99L02 e TILTT SV4 5E90 90 Degree Elbow NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE H2246 and Adapter 74161 77181 Sv4 55C6 Storm Collars 6 collars box Horizontal 3 1 1 spacing SV4 5VF Firestop Spacer 10 pack Vertical 1 1 1 spacing SV4 5SU Support Strap SV4 5ARSA Adjustable Attic Insulation Shield 12 to 22 SV4 5TWSK Through Wall Shield Kit not illustrated 10 pack SV4 5SP Support Plate SV4 5HGS Termination Guard Square not illustrated 4 5HTSK Horizontal Termination Shroud Kit SV4 5HRK36 Horizontal Riser Kit 36 SV4 5HRK14 Horizontal Riser Kit 14 LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS INSTALLATION ACCESSORIES CONTINUED Listed Secure Flex Components These termination kits include firestop spacer gear clamps and flex adapter Listed Secure Flex Components CTSA 33 Chase Top Shroud Kit Description H1969 SF4 5HT 2 TTL8 7 7788 11189 11190
29. INSTRUCTIONS HORIZONTAL VENT FIGURES TABLES CONTINUED O Wall Firestop Spacer SV4 5HF Table E Hy 10 os 2 0 610 Ont using 15 4572 3 0 914 ecure Flex use Firestop Spacer SF4 5VF 20 60 4 1 219 when using Secure Flex V H H4 40 feet 12 2 m Max Firestop S use D Oceiling H H 20 ft 6 096 m Max Firestop Spacer SV4 5VF Example If 20 feet of H H horizontal vent run is needed Typical termination shown then 4 feet minimum of V vertical vent will be required This table shows a 1 V to 5 H ratio For every 1 foot of V vertical you are allowed 5 feet of H H horizontal run up to a maximum horizontal run of 20 feet See Table 8 on Page 20 as an aid in venting component selection for a particular range of exterior wall thicknesses An elbow is acceptable as 1 foot of vertical rise except where an elbow is the only vertical component in the system See Figure 31 Top Vent TWO 90 DEGREE ELBOWS Figure 29 NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE 21 22 HORIZONTAL VENT FIGURES TABLES CONTINUED Typical termination shown When using Secure Flex use Firestop Spacer SF4 5VF GO When using Secure Flex use Firestop Spacer Ceiling Firestop Spacer SV4 5VF wall Firestop Spacer SV4 5HF See Table 8 on Page 20 as anaid inventing component selection for a
30. NS Vertical Offset Installation Analyze the vent routing and determine the quantities of vent sections and number of elbows required Refer to Vertical Vent Figures and Tables on Pages 16 and 17 to select the type of vertical installation desired Vent sections are available in net lengths of 4 1 2 114 mm 10 1 2 267 mm 22 1 2 572 mm 34 1 2 876 mm and 46 1 2 1181 mm Refer to the Vent Section Length Charts on Page 13 for an aid in selecting length combinations Elbows are available in 90 and 45 configurations Refer to Figure 19 Page 15 for the SV4 5E45 and V4 5E90 elbow dimensional specifications Where required a telescopic vent section SV4 5LA may be used to provide the installer with an option in installing in tight and confined spaces or where the vent run made up of fixed length pieces develops a joint in a undesirable location or will not build up to the required length The SV4 5LA Telescopic Vent Section has an effective length of from 1 1 2 38 mm to 7 1 2 191 mm The SV4 5LA is fitted with a locking inclined channel end identical to a normal vent section component and a plain end with 3 pilot holes Slip the plain end over the locking channel end of a standard SV4 5 vent component the required distance and secure with three screws Maintain a minimum 1 25 mm clearance to combustible materials for all vertical elements Clearances for all horizontal elements are 3 76 mm on top 1
31. NTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS VERTICAL TERMINATION SYSTEMS ROOF See Figure 15 on Page 13 and Figures 23 25 on Pages 16 and 17 and their associated Vertical Vent Tables which illustrate the various vertical venting configurations that are possible for use with these appliances Secure Vent pipe applications are shown in these Figures Secure Flex pipe may also be used A Vertical Vent Table summarizes each system s minimum and maximum vertical and horizontal length values that can be used to design and install the vent components in a variety of applications Both these vertical vent systems terminate through the roof The minimum vent height above the roof and or adjacent walls is speci fied in ANSI Z223 1 latest edition In Canada the current CAN CSA B149 1 installation code by major building codes Always consult your local codes for specific requirements A general guide to follow is the Gas Vent Rule refer to Figure 4B on Page 6 Avent restrictor may need to be installed when vertical termination is used See nstallation of Vent Restrictor on Page 12 for guidelines Vertical Straight Installation Determine the number of straight vent sections required 4 1 2 114 mm 10 1 2 267 mm 22 1 2 572 mm 34 1 2 876 mm and 46 1 2 1181 mm net section lengths are available see Tables on this page and Page 34 Vent Sections Itis recommended that you p
32. Pull and extend the inner flexible vent pipe Slide the inner flex pipe over the adapter col lar Ensure the flexible vent pipe completely engages the adapter collar to a distance of 1 3 4 inches from the end and that it is free from damage or tears Slide the gear clamp down and tighten it fully to secure the flexible vent to the adapter inner collar approximately 3 4 inch from the end of the flex Install three screws 120 degrees apart through the flexible vent pipe and into the adapter collar just below the gear clamp to provide additional security to the connec tion gt c NOTE Outer pipe is pulled away to show the detail of the inner pipe APPLY ONLY MIL PAC BLACK HIGH TEMPERATURE SEALANT Cat No 10K81 to the outside surface of both collars of the adapter be especially careful to fill the grooves of the outer collar to be covered by the flexible pipe and slide flexible pipe over inner and outer adapter collars 1 3 4 inch 44 mm Flexible Pipe and Adapter Outer Collar Overlap Adapter SV4 5RF Attach adaptor to appliance Collar or secure vent sections Figure 33 Install the Outer Flex Pipe Install the large gear clamp loosely around the outer flexible vent pipe push it back out of the way Apply a bead of Mill Pac Black 700 F high temperature sealant Catalog No 10K81 to the outer adapter collar to the grooves of the collar which extend approximately 1 inch f
33. SI SZ223 1 NFPA 54 National Fuel Gas Codes Clearance required to vinyl soffit material 30 inches 76cm minimum A vent shall not terminate directly above a sidewalk or paved driveway which is located between two single family dwellings and serves both dwellings Only permitted if veranda porch deck or balcony is fully open on a minimum 2 sides beneath the floor ee tud EEA LEE EET War ut ur PIA rat ze Figure 6 NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS MINIMUM CLEARANCES TO COMBUSTIBLES Appliance And Vent Clearances The appliance is approved with zero clearance to combustible materials on all sides as detailed in Table 5 with the following exception When the unit is installed with one side flush with a wall the wall on the other side of the unit must not extend beyond the front edge of the unit In addition when the unit is recessed the side walls surrounding the unit must not extend beyond the front edge of the unit see Figure 3 MINIMUM CLEARANCES Inches millimeters 0 0 Spacers Or Dimples 1 2 13 0 0 Spacers or Dimples 0 0 From Bottom of Unit To Ceiling Front Biet O o meters Note 3 in 75 mm
34. VENT The vent air intake termination clearances above the high side of an angled roof is as shown in the following chart Figure 4B Horizontal Vent Termination Clearances Termination Heights For Vents Above Flat Or Sloped Roofs Ref NFPA 54 ANSI 2223 1 Roof Pitch Feet Meters Flat to 6 12 1 0 0 3 6 12 to 7 12 1 25 0 38 7 12 to 8 12 1 5 0 46 8 12 to 9 12 2 0 0 61 9 12 to 10 12 2 5 0 76 10 12 to 11 12 3 25 0 99 11 12 to 12 12 4 0 1 22 12 12 to 14 12 5 0 1 52 14 12 to 16 12 6 0 1 83 16 12 to 18 12 7 0 2 13 18 12 to 20 12 7 5 2 29 20 12 to 21 12 8 0 2 44 The horizontal vent termination must have a minimum of 6 152 mm clearance to any overhead combustible projection of 2 1 2 64 mm or less See Figure 5 For projections exceeding 2 1 2 64 mm see Figure 5 For additional vent location restrictions refer to Figure 6 on Page 7 Horizontal Vent Termination Clearances Combustible Projection 2 1 2 inches or less in length Combustible Projection greater than 2 1 2 inches in length Ventilated Soffit Unventilated Soffi 1 it n di 2 457 mm 305 mm Side Elevation View Termination Kit Figure 5 NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE All horizontal terminations may be located as close as 6 152mm to any non combustible and combustible exterior sidewall This distance may be decreased to 2 51mm for non combustible exterior sidewalls
35. acer at ceiling joists when using Secure Flex use SF4 5VF firestop spacer If there is living space above the ceiling level the firestop spacer must be installed on the bottom side of the ceiling If attic space is above the ceiling the firestop spacer must be installed on the top side of the joist Route the vent sections through the framed Opening and secure the firestop spacer with 8d nails or other appropriate fasteners at each corner Remember to maintain 1 25 mm clearance to combustibles framing members and attic or ceiling insulation when running vertical chimney sections Attic insulation shield H3907 may be used to obtain the required clearances indicated here See installation accessories Pages 34 and 35 The gap between the vent pipe and a vertical firestop can be sealed with non combustible caulking E Support the vertical vent run sections Note Proper venting supportis very important The weight of the vent must not be supported by the fireplace in any degree Support the vertical portion of the venting system every 8 feet 2 4m above the fireplace vent outlet A Blocking Support Straps Plumber s tape 8 feet 2 4 m Maximum 1 2 inch 12 7 mm minimum clearance to combustibles 18 LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS One method of support is by utilizing f
36. age of the igniter assembly Pressure Tap Manifold Supply Gas Inlet Burner Stage Terminal Regulator Mounting Screw Pressure Tap Inlet Pilot Stage Terminal Pilot Gas Outlet Ground TP Figure 52 Dexen Electronic Gas Valve ELECTRONIC Note If the igniter is damaged a re placement kit is available order Catalog Number 87L54 Figure 53 NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE All Models Step 8 Refer to Figure 49 on Page 36 and Figure 54 VERIFY THE PROPER ORIFICE SIZE BEFORE INSTALLING IT A Remove the orifice from the manifold and replace it with the one provided in the kit See Table 9 for orifice sizes for natural and pro pane models Figure 54 illustrates the orifice Use pipe joint compound or Teflon tape on all pipe fittings before installing ensure propane resistant compounds are used in propane ap plications do not use pipe joint compounds on flare fittings B Retrieve the burner and slide the venturi tube over the orifice Set the shutter adjusting Opening as shown in Figure 49 on Page 36 Burner Orifice Sizes Elevation 0 4500 feet 0 1372 meters Model Nat Gas Propane Series drill size inches drill size inches d 149 0 073 0 045 21182 15110 Standard size installed at factory Standard size in LP conversion kit Part Cat Number Table 9
37. ar screw Slide collar down until it meets the top of the flashing Tighten the ad justing screw Apply non combustible caulking or mastic around the circumference of the joint to provide a water tight seal Flashing Figure 21 NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE K Install the vertical termination The final step involves installation of the SV4 5CGV 1 Vertical Termination Extend the vent sections to the height as shown in the Vertical vent termination section in Figure 4B on Page The SV4 5CGV 1 Vertical Termination Figure 22 can be installed in the exact same fashion as any other Secure Vent section Align the termination over the end of the previously installed section adjusting the radial alignment until the four locking dimples of the termination are aligned with the inlets of the four incline channels of the last vent section Push the ter mination down until it fully engages then twist the termination clockwise running the dimples down and along the incline channels until they are seated at the end of the channels Figure 22 If the vent system extends more than 5 feet 1 5 m above the roof flashing stabilizers may be necessary Additional screws may be used at section joints for added stability Guide wires may be attached to the joint for additional sup port on multiple joint configurations 15 LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLA
38. ation Guard See Page 34 This can be purchased at your local dealer Firestop Spacer SV4 5HF shown Typical on the exterior side of the wall It Termination may also be installed on the interior side 10 1 2 267 mm 12 1 8 308 mm Adapter Note Centerline of Vent Piping is NOT the Same as the Centerline of TAN the Frame Opening See Figure 11 on Page 10 for Min distance to Base of Appliance Base of Appliance i 6 to 48 inch Vent Section Telescopic vent section Elbow or Appliance Collar Figure 27 INSTALLING HORIZONTAL TERMINATION Use silicone caulking to seal the top and sides of the termination up to the underlayment stucco or masonry wall surface Maximum wall thickness 9 1 4 in 235 mm Interior Surface of B Finished Wall veg Exterior Surface of Siding Vent Run Sections Lom Siding Relative to Exterior 1 7 Surface of Framing 6 in to 9 1 4 in 152 to 235 mm Last Vent Section Use Telescopic Vent Section SV4 5LA If Necessary SV4 5HT 2 Square Termination Shown SV4 5HT 2 Square Termination Shown Adapter SV4 5RCH 1 1 4 Maximum Recess of the Square Termination into For thicknesses greater Exterior Finishing Material than 9 1 4 see Table 8 on Page 20 Stucco Venting Connection and Exterior Wall Recessing of the Horizontal Termination Figure 28 Horizontal terminations have been designed to perform in a wide range of w
39. ce are primary concerns However vent system routing to the exterior and access to the fuel supply are also important Due to high temperatures the appliance should be located out of traffic and away from furniture and draperies Figure 3 Enraison des temp ratures lev es l appareil devrait tre install dans un endroit o il y a peu de circulation et loin du mobilier et des tentures Figure 3 The location should also be free of electrical plumbing or other heating air conditioning ducting These direct vent appliances are uniquely suited for installations requiring a utility shelf positioned directly above the fireplace Utility shelves like these are commonly used for locat ing television sets and decorative plants NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE Note When the unit is installed with one side flush with a wall the wall on the other side of the unit must not extend beyond the front edge of the unit Be aware that this is a heat producing ap pliance Objects placed above the unit are exposed to elevated temperatures Do not insulate the space between the ap pliance and the area above it see Figure 7 on Page 8 The minimum height from the base of the appli ance to the underside of combustible materials used to construct a utility shelf in this fashion is shown in Figure 7 on Page 8 The appliance should be mounted on a fully supporte
40. clearances to combustible mantels vary according to the depth of the mantel See Figure 8 Mantels constructed of non combustible materials may be installed at any height above the appliance Opening however do not allow anything to hang below the hood NOTE We recommend the use of high temperature paint rated 175 F or higher on the underside of the mantel Model No Top Vent with One 90 Degree Elbow SecweVent Secure Flex flex elbow MLDVTCD 35 46 1 2 1181 48 1 4 1226 Includes 3 clearance to combustibles required above vent components Combustible Shelf Height Inches millimeters Do not insulate the space between the appliance and the area above it 3 Shelf Height see table Figure 7 Shelf Height Minimum Clearances With Top Venting HF Mantel Depth gt 18 457 inches millimeters 16 406 14 356 12 305 10 254 D Appliance 8 203 Note Hood shown as positioned N ANA Figure 8 Minimum Mantel Clearances 12 10 8 6 305 254 208 152 102 1 At 14 minimum At 8 1 4 side side wall clearance wall clearance a a combustible wall combustible wall can project to project 12 length Top View of Fireplace Combustible Materials Allowed In Shaded Area Safe Zone 5 127 Combustible Walls 1 shown dark gray Combustible materials may en ou project beyond one side 112 805
41. combustible wall 20 6 096 1 219 V H 40 feet 12 2 m Max It is very important that the horizontal inclined run be maintained 20 ft 6 096 m Max ui in a straight no dips and recommended to be in a slightly elevated plane in a direction away from the fireplace of 1 4 rise per foot 20 H GO When using Secure Flex Et use Firestop Spacer mm per meter which is ideal though rise per foot run ratios that are smaller are acceptable all the way down to at or near level SF4 5VF The tables show a 1 V to 5 H ratio up to a maximum horizontal run When using S Flex SSS p of 20 feet except for installations where an elbow is the only vertical Wes SF4 5HF vent section in the system see Figure 29 e AN ELBOW IS ACCEPTABLE AS 1 FOOT OF VERTICAL RISE EXCEPT O Wall Firestop Spacer WHERE AN ELBOW IS THE ONLY VERTICAL COMPONENT IN THE SV4 5HF SYSTEM See Figure 29 Oceiling Typical termination shown boca A WARNING _ See Table 8 on Page 20 as an aid venting component selection Under no circumstances may separate sections of for a particular range of exterior wall thicknesses concentric flexible vent pipe be joined together Figure 30 Top Vent ONE 90 DEGREE ELBOW ELBOW CONNECTION NOT DIRECTLY AT APPLIANCE NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION
42. d constructed and made of materials that are in strict accordance with local codes and regulations All appliances are factory equipped with a flexible gas line connector and 1 2 inch shutoff valve see Step 6 on Page 26 Left Side Front Corner of Fireplace Framing Pipe Coupling Recommended A 6 1 2 152 mm 3 Pd 76 mm 7 From Floor Or Raised Platform Also see Figure 11 on Page 10 Figure 13 ROUTE GAS LINE Proper Sizing of Gas Line Properly size and route the gas supply line from the supply regulator to the area where the appliance is to be installed per requirements outlined in the National Fuel Gas Code NFPA 54 latest edition USA or CAN CSA B149 1 latest edition Canada Never use galvanized or plastic pipe Refer to Table 6 for proper sizing of the gas sup ply line if black iron pipe is being used Gas lines must be routed constructed and made of materials that are in strict accordance with local codes and regulations We recommend that a qualified individual such as a plumber or gas fitter be hired to correctly size and route the gas supply line to the appliance Installing a gas supply line from the fuel supply to the appliance involves numerous considerations of materials protection sizing locations controls pressure sediment and more Certainly no one unfamiliar and unqualified should attempt sizing or installing gas piping Schedule 40 Black Iron Pipe Insi
43. d base extending the full width and depth of the unit The appliance may be located on or near conventional construction materials However if installed on combustible materials such as carpeting vinyl tile etc a metal or wood barrier coveringthe entire bottom surface must be used LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS VENT TERMINATION CLEARANCES These instructions should be used as a guideline and do not supersede local codes in any way Install venting according to local codes these instructions the current National Fuel Gas Code ANSI Z223 1 in the USA or the current standards of CAN CSA B149 1 in Canada Vertical Vent Termination Clearances Terminate multiple vent terminations according to the installation codes listed above Also see Figure 4A Terminate single vent caps relative to building components according to Figure 4B 305mm Figure 4A Multiple Terminations Vertical Vent Termination Clearances TERMINATION HEIGHTS FOR VENTS ABOVE FLAT OR SLOPED ROOFS Horizontal Overhang 2FT Vertical 2 FT MIN MIN Wall Lowest Discharge Vent Opening Termination H Storm Collar X 12 Sy Roof Pitch is X 12 Concentric Vent Pipe Flashing 1 inch 25 4 mm Minimum Clearance to Combustibles H MINIMUM HEIGHT FROM ROOF TO LOWEST DISCHARGE OPENING OF
44. de Diameter Inches Schedule 40 Pipe Length feet Propane Gas am 3 3 8 1 2 1 2 1 2 1 2 NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE Inches millimeters Notes All appliances are factory equipped with a flexible gas line connector and 1 2 inch shutoff valve see Figure 38 on Page 26 See Massachusetts Requirements on Page 4 for additional requirements for installations in the state of Massachusetts in the USA The gas supply line should Not be connected to the appliance until Step 6 Page 26 A pipe joint compound rated for gas should be used on the threaded joints Ensure propane resistant compounds are used in propane applications Be very careful that the pipe compound does not get inside the pipe It is recommended to install a sediment trap in the supply line as close as possible to the appliance Appliances using Propane should have a sediment trap at the base of the tank Check with local building official for local code requirements i e are below grade penetrations of the gas line allowed etc IMPORTANT If propane is used be aware that if tank size is too small i e under 100 Ibs if this is the only gas appliance in the dwelling Ref NPFA 58 there may be loss of pressure resulting in insufficient fuel delivery which can result in sooting severe delayed ignition or other malfunctions Any damage resulting from an improper installation such as this is not covered under th
45. e el transmisor y l mpielo bien para quitar el polvo y aceite Pegue la etiqueta en la superficie del transmisor Figura Seleccione el idioma que m s se habla en la casa 3 Si no puede encontrar las etiquetas sirvase llamar a Lennox Hearth Products o al distribuidor de Lennox Hearth Products m s cercano para recibir etiquetas de instrucciones de seguridad adicionales gratuitas Juego de etiquetas de repuesto N de cat H8024 LENNOX HEARTH PRODUCTS 1 800 9 LENNOX Nota La etiqueta en ingl s es transparente con texto rojo Las etiquetas en franc s y espafiol son negras ton lexto blanco DIAGRAMAS DE ETIQUETAS DE SEGURIDAD ADVERTENCIA Vidrio y chimenea EXTREMADAMENTE CALIENTES Riesgo de quemaduras graves Siempre mantenga a los ni os alejados de la chimenea Figure C 33 34 INSTALLATION ACCESSORIES LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS Listed Secure Vent Components Listed Secure Vent Components __ at No Moder No 6xNe Model No H1968 SV4 5HT 2 Horizontal Square Termination with Firestop Spacer H2246 77L78 SV4 5F Flat Roof Flashing and Adapter 74L61 77L79 SV4 5FA ee Adjustable 94L10 SV4 5HTSS Horizontal Termination Small TETE ASE Flashing Square with Firestop Spacer 77L80 H2246 f fr RY Ls H2152 SV4 5CGV 1 Vertical Termination a a High Wind L
46. e limited warranty 12 Step 3 INSTALL THE VENT SYSTEM General Information These instructions should be used as a guideline and do not supersede local codes in any way Install venting according to local codes these instructions the current National Fuel Gas Code ANSI Z223 1 in the USA or the current standards of CAN CSA B149 1 in Canada Clearance in accordance with local installa tion codes and the requirements of the gas supplier D gagementconforme aux codes d installation locaux et aux exigences du foumisseunde gaz Use only approved venting components See Approved Vent Components on Page 2 These fireplaces must be vented directly to the outside The vent system may not service multiple appliances and must never be connected to a flue serving a solid fuel burning appliance The vent pipe is tested to be run inside an enclosed wall such as a chase There is no requirement for inspection openings in the enclosing wall at any of the joints in the vent pipe Installation of Vent Restrictor A vent restrictor may be needed with this appliance The restrictor is installed in the appliance top flue outlet as shown in Figure 14 either before adding vent from above or after installation of vent from below within the firebox The restrictor is self securing through a positive friction fit Determine the venting for the appliance If the vent run will include at least 8 feet of vertical rise then install th
47. e removed first to place the receiver in the lower control compartment 7 If an optional control is to be used wire it in the low voltage circuit as shown in Figure 36 Note The supplied 15feetof2 conductor wire has one end of each conductor connected to the gas valve circuit and the other end of each conductor placed loose inside the bottom compartment 8 If the optional unit mounted ON OFF FRS control switch is installed turn the ON OFF switch to the OFF position 9 After the wiring is complete replace the cover plate INTERMITTENT ELECTRONIC WIRING DIAGRAM 120 VAC BK W GR OPTIONAL BLOWER SWITCH JUNCTION BOX TO WALL RED BATTERY BACK UP SWITCH FRS OR THERMOSTAT Figure 36 NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE SPARK TO PILOT IGNITER IGNITER MODULE BLACK IGNITER f BLACK SENSOR ORANGE THTP g BLACK TP GREEN TH See Figure 37 for delailed drawing of junction box receptacle wiring LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS Note No batteries to be installed in the battery holder until a power outage or if the appli ance is to be operated solely with two 2 D batteries 120V 60HZ 1PH Wall mou
48. e restrictor inthe appliance collar before connecting any vent Refer to Figure 14 Place the restrictor inside the ap pliance vent collar and press in place Note firebox The restrictor is included within the NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS Vent Restrictor Installation Top Vent A vent restrictor may be needed when vertical ly terminating the vent system above the roof when using the appliance top vent install vent restrictor in the top vent of the fireplace outlet on all MLDVTCD series models If need ed install the restrictor orientated as shown either from inside or outside the unit in the inner fireplace collar Restrictor Fireplace Collar Appliance Top Vent Outlet Figure 14 Select Venting System Horizontal or Vertical With the appliance secured in framing determine vent routing and identify the exterior termina tion location The following sections describe vertical roof and horizontal exterior wall vent applications Refer to the section relating to your installation A list of approved venting components is shown on Pages 34 and 35 Note is not recommended that this unit be vented more than forty feet 40 vertically Extended vertical vent runs will diminish the fire LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CO
49. eather condi tions Our terminations meet or exceed industry standards When selecting the locations of your horizontal terminations do not place the termina tion where water from eaves and adjoining rooflines may create a heavy flow of cascad ing water onto the termination cap If the cap must be placed where the possibility of cascading water exists it is the responsibility of the builder to direct the water away from the termination cap by using gutters or other means Take care to carefully follow the installation instructions for the termination including the use of silicone caulking where required NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE 20 LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS Use Table 8 as an aid in venting component selection for a particular range of exterior wall thicknesses Table C Vin et meter eat meer sumo ehow ony Venting Components Required for Various Exterior Wall Thick nesses when using Typical Termination Kits Vent Components Required Exterior Wall Thickness inches mm Termination Kit Only 6 to 9 1 4 152 to 235 Termination Kitand 6 In Vent Section SV4 5L6 10 3 4 to 14 273 to 356 Termination Kit and 12 in Vent Section SV4 5L12 16 8 4 to 20 426 to 508 Termination Kit and Tele scopic Section SV4 5L12 1179 4 t0 20 299 t0 508 Table
50. ecure Flex kits may not be modified also under no circumstances may separate sections of flex pipe be joined together Using adapter SV4 5RF Secure Flex kits may be added to the end of a vent run made up of rigid Secure Vent SV4 5 vent sections provided that doing so does not violate any of the venting length height routing horizontal to vertical ratio requirements or clearance considerations detailed in this manual Secure Flex kits come with an adapter that can be fitted to the inclined channel end of the last Secure Vent SV4 5 vent section in a rigid system in the exact same fashion as any other Secure Vent section Align the dimpled end of the adapter over the previously installed section or appliance collar adjusting the radial alignment until the four locking dimples of the adapter are aligned with the inlets of the four incline channels of the last vent section or collar Push on the adapter until it fully engages then twist the adapter clockwise running the dimples down and along the incline channels until they seat at the end of the channels Attach the flexible vent to the adapter as fol lows see also Figure 33 A Install the Inner Flex Pipe 1 Install the small gear clamp loosely around the inner flexible vent pipe push it back out of the way 2 Apply a bead of Mill Pac Black 700 high temperature sealant Catalog No 10K81 to the inner adapter collar approximately 1 2 inch from the end
51. eded Engage the back edge of the eyebrow into the clips to secure Flange 1 2 Nailing Flange Glass Door Spring Latch Nailing Flange Control Compartment Panel Note When installing the glass door ensure the Spacing on both sides are equal Figure 44 INSTALLING OR REMOVING GLASS DOOR NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE Step 10 BURNER ADJUSTMENTS Flame Appearance and sooting Proper flame appearance is a flame which is blue atthe base and becomes yellowish orange in the body of the flame When the appliance is first lit the entire flame may be blue and will gradually turn yellowish orange during the first 15 minutes of operation After 15 minutes of operation if the flame is blue or if the flame is orange with evidence of sooting black tip the air shutter opening may need to be adjusted If the air shutter openings is closed too far sooting may develop Sooting is indicated by black puffs developing at the tips of very long orange flames Sooting results in black deposits forming on the appliance inside sur faces and on exterior surfaces adjacent to the vent termination Sooting is caused by incomplete combustion in the flames and lack of combustion air entering the air shutter opening To achieve a warm yel lowish orange flame with an orange body that does not soot the shutter opening must be adjusted between these two extremes Air Shutter Adjustment Guidelines
52. ents for the firebox outer wrapper Combustible framing may be in direct contact with the nailing flanges and may be located closer than 1 2 from screw heads and the firebox wrapper in areas adjacent to the nailing flanges Frame the opening to the exact dimensions specified in the framing details of this manual Figure 10 LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS FIREPLACE AND FRAMING SPECIFICATIONS Framing Inches mm Framing should be constructed of 2x4 or larger lumber Framing Dimensions VENT FRAMING TOP VENT WITH ONE x s pow RS 2 5 35 14 3514 3914 16 mm ee e Efficiencies mais T ne Versie Co axial DV 4 1 2 Inner G ENERGQuIDE Look for the EnerGuide 1 I Gas Fireplace Energy Viewable Glass Size Efficiency Rating in this brochure 29 14 Wide Based on CSA 4 1 02 20 1 4 High Input BTU MV amp Electronic CU DP E Natural amp Propane Gas mRRIUN ER My 5 Or Floor Raised Platform If Installing 1 p With Contemporary Facade D is the required framing depth dimension when the finish material drywall thickness is 1 2 in 13mm Diagrams illustrations and photographs are not to scale consult Vertical Venting Through the Ceiling installation instructions Product designs materials dimensions s B
53. ep 6 Step 7 Step 8 Step 9 NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE Step 1 FRAMING Framethese appliances as illustrated in Figures 11 and 12 on Pages 10 and 11 Figure 12 applies to corner framing installations only All framing details must allow for a minimum clearance to combustible framing members as shown in Table 5 on Page 8 If the appliance is to be elevated above floor level a solid continuous platform must be constructed below the appliance Headers may be in direct contact with the appli ancetop spacers when they are bent up vertically maintaining the 3 clearance to the fireplace top but must not be supported by them or notched to fit around them All construction above the appliance must be self supporting DO NOT use the appliance for structural support The fireplace should be secured to the side framing members using the unit s nailing flanges one top and bottom on each side of thefireplace front See Figure 10 Use 8d nails or their equivalent Unit Nailing Flange Side Framing Nailing Flanges Are Provided At All Four Corners At 5 8 1 2 And Flush Settings Left Side Front Corner of Fireplace Shown Right Side Requirements the Same Unit Being Secured By Its Nailing Flanges To The Framing Note The nailing flanges combustible members and screw heads located in areas directly adjacent to the nailing flanges are EXEMPT from the 1 2 clearance to combustible requirem
54. er SV4 5RCH provided with the termination to the vent section or telescoping vent section elbow or appliance collar as shown in Figure 27 inthe same manner as any SV4 5 vent component refer to Step E L Install Firestop Spacer at exterior wall When using the termination install SV4 5HF Secure Vent SF4 5HF Secure Flex Firestop Spacer over the opening at the exterior side of the framing long side up with the 3 inch spacer clearance at the top as shown in Figure 27 and nail into place The Firestop Spacer may also be installed over the opening at the interior side of framing M Install the Termination SV4 5HT 2 or SV4 5HTSS For the last step from outside the exterior wall slide the collars of the termination onto the adapter the outer inside the outer and the inner outside the inner until the termination seats against the exterior wall surface to which it will be attached Orient the housing of the termination with the arrow pointed upwards Secure the termination to the exterior wall The horizontal termination must not be recessed into the exterior wall or siding by more than the 1 1 4 32 mm as shown in Figure 28 IMPORTANT The vent termination is hot while in operation and fora period oftime following the use of the fireplace Young children should be carefully supervised when they are in the same area as a hot termination To prevent contact with hot surfaces we recommend the use of a Termin
55. g Secure Flex use Firestop Spacer SF4 5HF Figure 25 Top Vent THREE ELBOWS HORIZONTAL OUTSIDE WALL TERMINATION SYSTEM Figure 26 on Page 18 and Figures 27 to 32 on Pages 19 through 22 and their associated Horizontal Vent Table which illustrate the various horizontal venting configurations that are possible for use with these appliances Secure Vent pipe applications are shown in these Figures Secure Flex pipe may also be used A Horizontal Vent Table summarizes each system s minimum and maximum vertical and horizontal length values that can be used to design and install the vent components in a variety of applications Both ofthese horizontal vent systems terminate through an outside wall Building Codes limit or prohibit terminating in specific areas Refer to Figure 6 on Page 7 for location guidelines Example If 20 feet total H H horizontal vent run is needed then i nN V4 4 feet minimum of V vertical vent will be required This table shows a 1 V to 5 H ratio For every 1 foot of V vertical you are allowed 5 feet of H H horizontal run up to a maximum total horizontal run of 20 feet An elbow is acceptable as 1 foot di of vertical rise except where c Le an elbow is the only vertical Hy component in the system See Figure 29 Secure Vent SV4 5 direct vent system compo nents are unitized concentric pipe components featuring positive twist lock connection refer to Figure 17 on Page
56. ge Terminal Pilot Gas Pressure Tap Ground Outlet Inlet TP Figure 2 Dexen Electronic Gas Valve REQUIREMENTS FOR THE COMMON WEALTH OF MASSACHUSETTS These fireplaces are approved for installation in the US state of Massachusetts if the following additional requirements are met nstall this appliance in accordance with Massachusetts Rules and Regulations 248 C M R Installation and repair must be done by a plumber or gas fitter licensed in the Com monwealth of Massachusetts The flexible gas line connector used shall not exceed 36 inches 92 centimeters in length The individual manual shut off must be a T handle type valve Massachusetts Horizontal Vent Requirements Inthe Commonwealth of Massachusetts hori zontal terminations installed less than seven 7 feet above the finished grade must comply with the following additional requirements A hard wired carbon monoxide detector with an alarm and battery back up must be installed on the floor level where the gas fireplace is installed The carbon monoxide detector must comply with NFPA 720 be ANSI UL 2034 listed and be ISA certified A metal or plastic identification plate must be permanently mounted to the exterior of the building ata minimum height of eight 8 feet above grade and be directly in line with the horizontal termination The sign must read in print size no less than one half 1 2 inch in size GAS VENT DIRECTLY BELOW KEEP CLEAR OF ALL O
57. he gas line from the last fitting shown in Figure 13 on Page 11 to a point within the control compartment that will allow the shut off valve to be easily attached by hand to the gas flex line Using pipe dressing materials appropriate for the gas type securely affix the shut off valve to this determined pipe length at a convenient location outside of the appliance lower control compartment Flex Li Line Connector ae NPT 3 8 Flare 1 Fitting Shut off Valve 0 13 8 Flex Tubing Cte FO 12 x 3 8 3 8 Nipple 6 2 Reducer Gas Pa 3 8 Union o an 3 8 Close Nipple Figure 38 INSTALLATION INSTRUCTIONS GAS CONNECTION Note The gas supply line must be installed in accor dance with building codes by a qualified installer approved and or licensed as required by the locality In the Commonwealth of Massachusetts installation must be performed by a licensed plumber or gas fitter 3 8 Shut off Valve Gas Solid Line Connector Gas Shut Off Valve Figure 39 Gas Flex Line Valve Refer to Figure 40 and insert the last length of gas pipe with its attached shut off valve into the lower control compartment and pass it through the gas line access hole on the left side of the appliance outer wrapper Using ap propriate materials for the gas type thread the last length of pipe into the end of the gas vent run and
58. he wall switch that controls the fireplace Figure A or the wall thermostat Figure B Choose the language primarily spoken in the home 2 lfaremotecontrolis used to control the fireplace locate the transmitter and clean it thoroughly to remove any dust and oils Affix the label to the surface of handheld transmitter Figure C Choose the language primarily spoken in the home 3 f you are unable to locate the labels please call Lennox Hearth Products or your nearest Lennox Hearth Products dealer to receive additional safety instruction labels free of charge Cat No H8024 Replacement Label Kit LENNOX HEARTH PRODUCTS 1 800 9 LENNOX Note English is red text on clear label French and Spanish are white text on black label SAFETY LABEL DIAGRAMS WARNING EXTREMELY HOT glass and fireplace Risk of Severe Burns ALWAYS KEEP_CHILDREN AWAY FROM FIREPLACE Figure A APPOSITION DES MISES EN GARDE RELATIVES ALA SECURITE D UTILISATION Votre foyer a t livr avec des tiquettes de s curit qui doivent tre coll es c t des dispositifs de contr le du foyer Une tiquette de s curit doit tre coll e sur la plaque de l interrupteur contr lant l allumage du foyer voir Figure A ou sur le thermostat mural voir Figure B et le cas ch ant sur le bo tier de la t l commande Figure C Les mises en garde auraient d tre coll es au moment de l installation initiale du foyer
59. her end of each conductor placed loose inside the bottom compartment 3 If an optional control switch is installed turn the appliance mounted ON OFF burner control switch to the OFF position if in stalled CAUTION Do Not connect the optional wall switch to a 120V power supply B Electronic Wiring See Figure 36 Note The electronic appliance must be con nected to the main power supply 1 Route a 3 wire 120Vac 60Hz 1ph power supply to the appliance junction box 2 Remove the electrical inlet cover plate from the side of the unit by removing the plate s securing screws See Figure 11 on Page 10 3 Remove the cover plate s knockout and then feed the power supply wire through the knockout opening and into the unit junction box 4 Connect the black power supply wire to the lower outlet s red pigtail lead and the white power supply wire to the common terminal of the outlet as shown in Figure 36 5 Connect the ground supply wire to the pig tail lead attached to outlet s green ground screw 6 Either wall mounted switch unit mounted rocker switch FRS thermostat or one of the optional remote control kits is to be used Mount wall switch or thermostat in a convenient location on a wall near the fireplace Note Remote receiver should be located in the wall or if installed in the control compartment pulled all the way forward and completely to the left or right against the corner posts The door must b
60. ice agency performing LA CONVERSION COUPEZ D ABORD this installation assumes responsibility for this conversion L ALIMENTATION EN GAZ ENSUITE COUPEZ L ALIMENTATION LECTRIQUE AVERTISSEM ENT Step 2 Remove the front glass door assembly ERE SE E IE NEU ELM figure 44 on Page 30 selon les instructions du fabricant et selon toutes les exigences et tous les codes pertinents de l autorit comp tente Assurez vous de bien suivre les instructions dans cette notice pour r duire au minimum le risque d incendie d explosion ou la production de monoxyde de carbone pouvant causer des dommages mat riels des blessures ou la mort Le tecnicien agr estresponsable de l installation de cette trousse L installation n est pas ad quate ni compl te tant que le bon fonctionnement de l appareil converti n a pas t v rifi selon les instructions du fabricant fournies avec la trousse Le fournisseur de service qualifi ayant r alis l installation assume les responsabilit s li es la conversion CAUTION THE GAS SUPPLY SHALL BE SHUT OFF PRIOR TO DISCONNECTING Step 3 Carefully remove the contemporary floor media Exercise care so as not to break the contemporary floor media Step 4 Refer to Figure 49 Remove the burner assembly with attached venturi tube Burner Assembly canana Millivolt SIT Systems THE CONVERSION SHALL BE CAR Nahiral Gas To Pronane GS RIED OUT IN ACCORDANCE WITH THE e
61. ield pro vided support straps conventional plumber s tape Secure the plumber s tape to the framing members with nails or screws Loop the tape around the vent securing the ends of the tape tothe framing If desired sheet metal screws 6 x 1 2 length may be used to secure the support straps to the vent pipe Refer to Figure 18 F Change vent direction to horizontal inclined run At transition from or to a horizontal in clined run install the SV4 5E45 and SV4 5E90 elbows in the same manner as the straight vent sections The elbows feature a twist section to allow them to be routed about the center axis of their initial collar section to align with the required direction of the next vent run element Twist elbow sections in a clockwise direction only so as to avoid the possibility of unlocking any of the previously connected vent sections see Figure 19 li 8 1 8 206 mm Swivel Joint Swivel Joint 360 swivel 360 swivel SV4 5E45 SV4 5E90 45 Elbow 90 Elbow Figure 19 G Continue installation of horizontal inclined sections Continue with the installation of the straight vent sections in horizontal inclined run as described in Step C Install support straps every 5 ft 1 52 m along horizontal inclined vent runs using conventional plumber s tape See Page 18 Figure 26 It is very important that the horizontal inclined run be maintained ina straight no dips and recommended to be ina slight
62. ilated soffit located above the 18 inches 458mm 18 inches 458mm termination within a horizontal distance of 18 inches 458mm from the center line of the termination meter regulator assembly above the meter regulator assembly above the meter regulator assembly T Clearance to service regulator vent otlet atest tem J Clearance to nonmechanical air supply inlet to building or 6 inches 15cm for appliances 6 inches 15cm for appliances the combustion air inlet to any other appliance lt 10 000 Btuh 3kW 12 inches 30cm lt 10 000 Btuh 3kW 9 inches 23cm for appliances gt 10 000 Btuh 3kW for appliances gt 10 000 Btuh 3kW and lt 50 000 Btuh 15kW 12 inches 30cm for appliances gt 50 000 Btuh 15kW K Clearance to a mechanical air supply inlet 6 feet 1 83m 3 feet 91cm above if within 10 feet 3m horizontally L Clearance above paved sidewalk or paved diveway located 7 feet 2 13m t 7 feet 2 13m t on public property M Clearance under veranda porch deck or balcony 12 inches 30cm 12 inches 30cm N Depth of Alcove Maximum 6 feet 1 83m 6 feet 1 83m O Clearance to Termination Alcove 6 inches 15 2mm 6 inches 15 2 Width of Alcove Minimum Q Clearance to Combustible Above Alcove 18 inches 457mm 18 inches 457mm In accordance with the current CAN CSA B149 1 National Gas And Propane Installation Code n accordance with the curent AN
63. ing a Torx T20 with 1 4 shank and center hole tool or standard flat screwdriver remove and discard the three pressure regulator mounting screws Remove the pressure regu lator spring poppet diaphragm and bushing Discard all removed components Ensure the rubber gasket installed onthe back of the replacement pressure regulator is properly positioned and install the new pressure regula tor using the new screws supplied with the kit Tighten screws to 25 In Ib torque Pressure Regulator Remove These Components Figure 50 Step 6 See Figure 51 and remove the pilot hood assembly to access the hexed pilot orifice Remove and replace the orifice with the one provided with the kit Pilot Orifice Figure 51 Electronic Appliances Step 7 Dexen Electronic Valves See Figure 52 and the instructions provided with the kit Remove and discard the two pressure regula tor mounting screws Remove the pressure regulator and diaphragm Discard all removed components Ensure the provided diaphragm is installed properly onto the replacement pressure regulator and install the new pres sure regulator using the new screws supplied with the kit Tighten screws See Figure 53 and replace the pilot orifice as follows Remove pilothood assembly to access the phillipped pilot orifice Remove and replace the orifice with the one provided with the kit Exercise extreme care to prevent damage to or break
64. installation adjust ment 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 WARNING Failure to comply with these installation instructions will result in an improperly installed and operating appliance voiding its warranty Any change to this appli ance and or its operating controls is dangerous A WARNING Clothing or other flammable material should not be placed on or near the appliance AVERTISSEMENT On ne devrait pas placer de v tements ni d autres mati res inflammables sur l appareil ni proximit WARNING Any safety screen or guard removed for servicing the appli ance must be replaced prior to operating the appliance AVERTISSEMENT Tout cran ou protecteur retir pour permettre l entretien de ET ELU doit tre remis en place avant de mettre appareil en marche WARNING Improper installation or use of this appliance can cause serious injury or death from fire burns explosion or carbon monoxide poisoning Note Installation and repair should 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 bed ding material etcetera It is imperative that cont
65. lan the vent lengths so that a joint does not occur at the intersection of ceiling or roof joists Refer to the Vent Section Length Chart SV4 5CGV 1 CG SV4 5FA OR Termination V4 5FB Flashing ro AND SV4 5SC STORM COLLAR 1 25 4 mm Minimum Clearance to Combustibles OSVA 5VF pi Firestop Spacer 6 V4 5L6 12 24 36 48 Vent Sections When using Secure Flex use Firestop Spacer Figure 15 Nominal T RESP e Tol inches T PR o on cv CEE Q jinches ft dy 45 oss 1 o o o o t 9 form 2 of of ojo 105 oss o 1 o o o tj 15 125 2 1 0 joo fel 155 pes 2 Pa 2 ole zs ves o o 3 9 eos OO Pais zes o s v 9 ss o 9 oft T9 T us ss 1 T pl 7 fp Ps esto lol gt Pes v T 2 st 42 i fo 55 5 4625 0 1 2 57 o o t t jJ o 2 66 525 o 2 2 o j o 4 675 5620 0 o 3 o 69 575 o o o 2 p 735 61251 t o o 2 3 795 6625 o 1 o 2 o 3 9 sos o o o t o 75 0 2 tf 0j t 4 915 7651 o o 2 o 1 fs 93 775 0 o o fo 2 gt s fs 1 2 ofa 975 81251 1 o o o 2 fs 102 85 2 o o o 2 4 1035 8625 0 0 0 3 0
66. li i REQUIREMENTS OF THE PROVINCIAL Cat No AUTHORITIES HAVING JURISDICTION AND IN ACCORDANCE WITH THE RE MLDVTCD 35 QUIREMENTS OF THE CAN CSA B149 1 Gas Valve INSTALLATION CODE Millivolt SIT Systems Propane to Natural Gas Orifice LA CONVERSION DEVRA ETRE EF Conversion Kits FECTUEE CONFORM MENT AUX RE Model COMMANDATIONS DES AUTORITES PROVINCIALES AYANT JURIDICTION ET CONFORMEMENT AUX EXIGENCES DU CODE D INSTALLATION CAN CSA Electronic DEXEN Systems B149 1 Natural Gas To Propane Gas Conversion Kits Gas conversion kits are available to adapt Model Cat lo Figure 49 your appliance from the use of one type of MLDVTCD 35 H7295 gas to the use of another These kits contain all the necessary components needed to complete the task including labeling that must Electronic DEXEN Systems be affixed to ensure safe operation Propane Gas To Natural Gas Conversion Kits Kit part numbers are listed here and the following steps detail the conversion pro Model Cat No cedure Refer to the instructions provided MLDVTCD 35 H7296 with the conversion kit when performing any gas conversion NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS Millivolt Appliances Step 5 SIT Systems Refer to Figure 50 on Page 37 and the instructions provided with the kit Us
67. livolt appliances are manually controlled and feature a spark igniter piezo that allows the appliance s pilot gas to be lit without the use of matches or batteries This system provides continued service in the event of a power outage Millivolt models come standard with a manu ally modulated gas valve flame appearance and heat output can be controlled at the gas valve The BTU Input for these appliances is shown in Table 1 Electronic Models These electronic appli ances are manually controlled and feature an electronic intermittent pilot ignition system External electrical power is required to operate these units These electronic models come standard with a manually modulated gas valve flame appear ance and heat output can be controlled at the gas valve The BTU Input for these appliances is shown in Table 1 Input BTU HR Manually Modulated Gas Valves all models Input Rate BTU HR Nat Gas Prop Gas 14 500 high 13 500 high MLDVTCD 35 44 5001ow 10 500 low Table 1 LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS Gas Pressure All Models Tables 2 and 3 show the appliances gas pressure requirements Inlet Gas Supply Pressure all models 4 5 WC 10 5 WC 1 12 kPa 2 61 kPa 11 0 WC 13 0 WC 3 23 kPa Table 2 Manifold Gas Supply Pressure all models Lo 2 2 WC 0 55 kPa
68. ll an adjustable safety gate to keep toddlers young children and other at risk individuals out of the room and away from hot surfaces AVERTISSEMENT Les jeunes enfants devraient tre surveill s troitement lorsqu ils se trouvent dans la m me pi ce que l appareil Les tout petits les jeunes enfants ou les adultes peuvent subir des br lures s ils viennent en contact avec la sur face chaude Ilestrecommand d installer une barri re physique si des personnes a risques habi tent la maison Pour emp cher l acc s un foyer ou un po le installez une barri re de s cu rit cette mesure emp chera les tout petits les jeunes enfants et toute autre personne risque d avoir acc s la pi ce et aux surfaces chaudes Children and adults should be alerted to the hazards of high surface temperature and should stay away to avoid burns or clothing ignition Les enfants et les adultes devraient tre infor m s des dangers que posent les temp ratures de surface lev es et se tenir distance afin d viter des br lures ou que leurs v tements ne s enflamment DO NOT ATTEMPT TO ALTER OR MODIFY THE CONSTRUCTION OF THE APPLIANCE OR ITS COMPONENTS ANY MODIFICATION OR ALTERATION MAY VOID THE WARRANTY CER TIFICATION AND LISTINGS OF THIS UNIT LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS WARNING Improper
69. ll require electrical power are to be installed the electrical power must be provided at the time of appliance in stallation The Electronic appliances have an electronic intermittent pilot ignition system External electrical power is required to operate these units The battery back up can be used in case of a power outage These vented gas fireplaces are sealed combus tion air circulating gas fireplaces designed for residential applications Use Only These Approved Vent Components These fireplaces are designed tested and listed for operation and installation with the following 4 1 2 inner and 7 1 2 outer vent components only e Secure Vent Direct Vent System Compo nents manufactured by Security Chimneys International e Secure Flex Flexible Vent Components manufactured by Security Chimneys Inter national and e Z FLEX Model GA Venting Systems listed to UL1777 and ULCS635 manufactured by Flexmaster Canada Limited These approved vent system components are labeled for identification DO NOT use any other manufacturer s vent components with these appliances GENERAL INFORMATION WARNING Young children should be care fully supervised when they are in the same room as the appli ance Toddlers young children and others may be susceptible to accidental contact burns A physical barrier is recommended if there are at risk individuals in the house To restrict access to a fireplace or stove insta
70. ly elevated plane ina direction away from the fireplace of 1 4 rise per foot 20 mm per meter which is ideal though rise per foot run ratios that are smaller are acceptable all the way down to at or near level Use a carpenter s level to measure from a constant surface and adjust the support straps as necessary Itis important to maintain the required clear ances to combustibles 1 25 mm atall sides for all vertical runs and 3 76 mm at the top 1 25 mm at sides and 1 25 mm at the bottom for all horizontal inclined runs H Frame roof opening Identify location for vent at the roof Cut and or frame opening per Roof Framing Chart Figure 20 Framing Dimensions for Roof Inches millimeters 0 12 10 1 2 in 10 1 2 in 267 mm 267 mm 6 12 10 1 2 in 267 mm 12 12 10 1 2 in 17 3 4 in 267 mm 451 mm Figure 20 Root Framing l Install the roof flashing Extend the vent sections through the roof structure Install the roof flashing over the vent section and posi tion such that the vent column rises vertically use carpenters level Figure 21 Nail along perimeter to secure flashing or adjust roofing to overlap the flashing edges at top and sides only and trim where necessary Seal the top and both sides of the flashing with waterproof caulking J Install the storm collar Install the storm collar supplied with the flashing over the vent flashing joint See Figure 21 Loosen the storm coll
71. mbled River Stone MTRS IMPORTANT Refractory panels should be installed before any of the contemporary media are installed 1 Place stones on the firebox sub floor in any atheistically pleasing manner to suite individual taste See Figure 43 Detail C on Page 29 for an example IMPORTANT Be sure stones do not im pinge on the burner outlet Install Crushed Glass And Sand MCCG and MBSK IMPORTANT Refractory panels should be installed before any of the contemporary media are installed 1 Pour out glass or sand on firebox sub floor completely covering the sub floor See Figure 43 Detail D on Page 29 for an example IMPORTANT Avoid letting glass or sand fall into the burner outlet Make sure no glass or sand falls into the burner ports Install Contemporary Facade 1 Refer to the Facade Installation Instruc tions P N 506019 40 to install the Con temporary Facade LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS MLDVTCD 35 REFRACTORY PANELS AND CONTEMPORARY MEDIA PLACEMENT Rear Zen Garden Panel Tumbled River Stone Burner Outlet Black Obsidian Contemporary Glass Burner Outlet Note River Stone And Beach Sand May Be Used Together Detail A Detail C Left Zen Garden Panel Right Zen Garden Panel Contemporary Beach Sand Burner Outlet Diamond White Contemporary Glass Burner Outlet Note Beach Sand And River St
72. n is unique and may result in variations to the steps described See the Page numbers references in the follow ing steps for detailed procedures Step 1 Pages 10 and 11 Construct the appliance framing Position the ap pliance within the framing and secure with nailing brackets Bend up the appropriate header spacing guides for the drywall finish material thickness to be used see Figure 47 on Page 32 Bend up the outer pair for 1 2 materials and the inner pair for 5 8 materials Bend out the appropriate nailing flanges for the drywall finish material to be used Nailing flanges are provided for flush framing 1 2 inch and 5 8 inch framing depths see Figure 10 Page 11 Route gas supply line to appliance location Page 12 Install the vent system and exterior termination Page 24 Field Wiring a Millivolt Appliances Bring in electrical service line for forced air circulating blower optional equip ment b Electronic Appliances Field wire Page 25 Install blower kit optional equipment Page 26 Make connection to gas supply Page 27 Verify appliance opera tion Page 28 Install contemporary me dia Page 30 Install glass door assem bly Step 10 Page 30 Adjust burner primary air shutter to achieve proper flame ap pearance Step 11 Page 32 Install the hoods Step 12 Page 33 Mtach Safety in Operation Warnings Step 2 Step 3 Step 4 Step 5 St
73. n until the properflame appearance is achieved 4 Leave the control knob off pilot on in the ON position and the burner ON OFF switch OFF and remote switches if applicable 5 When satisfied that the burner flame appear ance is normal re install the lower control compartment door then proceed to finish the installation NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE 31 32 LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS Step 11 HOOD INSTALLATION Refer to Figure 47 All of these appliances must have hoods installed prior to operating Install hood by sliding it into the slots on the lower edge of the cabinet top FINISHING REQUIREMENTS Wall Details Complete finished interior wall To install the appliance facing flush with the finished wall position framework to accommodate the thickness of the finished wall Figure 47 See Page 5 for Cold Climate Insulation and Page 8 for Clearances This Area Must Remain Clear of Combustible 3 Materials 76 mm 1 Min 25 Combustible Finished Wall Materials Header Combustible material may touch the appliance top Top of Appliance 3 Clearance Min N Figure 47 Combustible Wall Framing FINISHING REQUIREMENTS Contemporary Facade This contemporary unit is uniquely suited for mid wall installations with an a
74. netrates a wall or ceiling a firestop spacer is required use the SF4 5 VF firestop spacer for ceilings and the SF4 5 HF firestop spacer for walls See the appropriate sections and Figures shown throughout the vent ing section for their installation requirements Flexible Vent Section Te 5 127 mm Radius Minimum Figure 34 E Attach Flex Vent to Termination Secure Flex components can be purchased separately and attached to bulk lengths of Se cure Flex flexible tubing cut to size at the job site Secure the flexible vent to the Secure Flex terminations in the same manner see Figure 33 as it was attached to the adapter Note Secure Flex vent must be attached to Se cure Flex terminations only DO NOT substitute Secure Vent terminations or the Secure Vent adapter for Secure Flex components The col lars of Secure Flex terminations and adapters have a different diameter than that used with the Secure Vent pipe Additionally Secure Flex components have an extended length center tube for use in attaching the flexible vent 23 24 LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS Step 4 FIELD WIRING A CAUTION Ground supply lead must be con nected to the wire attached to the green ground screw located on the outlet box See Figure 37 Failure to dosowillresultin a potential safety hazard The appliance must be elect
75. nstructions manual B Brush all joints and connections with the gas leak test solution to check for leaks If bubbles are formed or gas odor is detected turn the gas control knob to the OFF posi tion Either tighten or refasten the leaking connection and retest as described above C Whenthe gas lines are tested and leak free be sure to rinse off the leak testing solution Step 7 VERIFYING APPLIANCE OPERATION Turn on burner then observe the individual tongues of flame on the burner Make sure all ports are open and producing flame evenly across the burner If any ports are blocked or partially blocked clean out the ports With gas line installed run initial system checkout before closing up the front of the unit Follow the pilot lighting instructions provided in the Care and Operation Instructions For piezo igniter location see Figure 39 on Page 26 millivolt appliances only Note Lighting Instructions are also found on the literature tag tied to the gas piping next to the gas valve To access the tag open the lower control compartment door Figure 39 on Page 26 by pulling the panel forward When first lighting the appliance it willtake a few minutes for the line to purge itself of air Once purging is complete the pilot and burner will light and operate as indicated in the instruction manual Subsequent lighting of the appliance will not require such purging Inspect the pilot flame remove contemporary floor
76. nted ON OFF Blower Switch or Variable Speed Control Switch Ground Green Neutral White 120 VAC Black Hot Side of Receptacle 0 Neutral Side of Receptacle Tab Intact Green Ground Screw into this receptacle Field Wired Factory Wired Figure 37 J BOX WIRING NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE Step 5 WIRING OPTIONAL FORCED AIR BLOWER KIT Blower Access Blower access is through the firebox bottom Remove the front panel the porcelain panels the sub floor remove the burner and remove ten screws securing the GTA assembly to the firebox electrical outlet box is provided for the instal lation of the FBK 100 and FBK 200 forced air blower kit Electrical power must be provided to this box to operate these blowers Install the blower kit according to the installation instruc tions provided with the kit Reposition and reinstall the GTA assembly burner and sub floor 25 26 LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 Step 6 CONNECTING GAS LINE All codes require a shut off valve mounted in the supply line The orientation of the shut off valve should face the front Figure 38 illustrates two methods for connecting the gas supply A Sediment Trap is recommended to prevent moisture and debris in gas line from damaging the valve
77. of the fireplace opening me as long as they are kept within the shaded areas illustrated here i 149 483 Inches millimeters 14 8 14 Protected wall shown in white 356 209 Figure 9 Minimum Distance to Unprotected Side Wall NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS A WARNING Failure to position the parts in accordance with these diagrams or failure to use only parts specifi cally approved with this appliance may result in property damage or personal injury A AVERTISSEMENT Risque de dommages ou de blessures si les pieces ne sont pas install es conform ment a ces sch mas et ou si des pi ces autres que celles sp cifiquement approuv es avec cet appareil sont utilis es DETAILED INSTALLATION STEPS The appliance is shipped with all gas controls and components installed and pre wired 1 Remove the shipping carton Remove the shipping pad exposing the front glass door 2 Open the two latches located under the fire box floor securing the glass door Remove the door by tilting it outward at the bottom and lifting it up Set the door aside protecting it from inadvertent damage See Removing Glass Panels on Page 30 TYPICAL INSTALLATION SEQUENCE The typical sequence of installation is outlined below However each installatio
78. one May Be Used Together Detail B Detail D Figure 43 NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE 29 30 LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS Step 9 INSTALLATION AND REMOVAL OF GLASS DOOR A WARNING Do notattemptto substitute the materials used on these doors or replace cracked or broken glass Handle this glass with extreme care Glass is susceptible to damage Do not scratch or handle roughly while reinstall ing the glass door frame e The glass door s of this appli ance must only be replaced as a complete unit as provided by the manufacturer Do not attempt to replace broken cracked or chipped glass sepa rately Do not attempt to touch the front enclosure glass with your hands while the fireplace is in use WARNING Do not operate appliance with the glass front removed cracked or broken AVERTISSEMENT Ne pas utiliser l appareil si le panneau frontal en verre n est pas en place est craqu ou brise Only doors certified with the appliance Shall be used Seules des portes certifi es pour cet appareil doivent tre utilis es CAUTION DO NOT abuse glass door by striking or slamming shut Removing Glass Enclosure Panels see Figure 44 1 To access the glass door securing latches first open the lower control compartment door Figure 44 by
79. only if the SV4 5HT 2 termination is used Termination Kit Note See Figure 28 on Page 19 for the exterior wall recess allowances of the square horizontal termination LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS EXTERIOR HORIZONTAL VENT TERMINATION CLEARANCE REQUIREMENTS NOTE Local Codes Or Regulations May Require Different Clearances See D in the Text Below j i NOTE Location Of The Vent Termination Exterior Wall Lm Must Not Interfere With Access To The Y m Electrical Service 18 4 U Horizontal y Termination PSE ventilated Soffit Inside Corner Detail D Air Supply Inlet W Vent Termination Area where Termination is not Permitted Canadian Installation US Installation A Clearance above grade veranda porch deck or balcony 12 inches 30cm B Clearance to window or door that may be opened 6 inches 15cm for appliances 6 inches 15cm for appliances lt 10 000 Btuh 3kW 12 inches 30cm lt 10 000 Btuh 3kW 9 inches 23cm for appliances gt 10 000 Btuh 3kW for appliances gt 10 000 Btuh 3kW and lt 50 000 Btuh 15kW 12 inches 30cm for appliances gt 50 000 Btuh 15kW C Clearance to permanently closed window 12 inches 305mm recommended to 9 inches 229mm recommended to prevent window condensation prevent window condensation D Vertical clearance to vent
80. origine dans une maison pr fabriqu e E U seulement ou mobile et doit tre install selon les instructions du fabricant et conform ment la norme Manufactured Home Constructions and Safety Title 24 CFR Part 3200 aux Unis ou la norme Can CSA 7240 S rie MM Maisons mobiles au Canada This appliance is only for use with the type of gas indicated onthe rating plate This appliance is not convertible for use with other gases unless a certified kit is used Cet appareil doit tre utilis uniquement avec le type de gaz indiqu sur la plaque signal tique Cet appareil ne peut tre converti a d autres gaz sauf si une trousse de conversion est utilis e CAUTION Ensure that the cross mem bers are not cut or weakened during installation The structural integrity of the manufactured home floor wall and ceiling roof must be maintained CAUTION This appliance must be ground ed to the chassis of the manufactured home in accordance with local codes or in the absence of local codes with the National Electrical Code ANSI NFPA 70 latest edition or the Canadian Electrical Code CSA C22 1 latest edition TOP VENT APPLICATION TOP VENT APPLICATION APPLICATION TOP VENT RECESSED INSTALLATION HORIZONTAL VENT Top Vent Application VERTICAL VENT Top Vent Application Figure 3 Typical Locations LOCATION In selecting the location the aesthetic and functional use of the applian
81. ort the vertical run sections See Section E on Page 14 H Change vent direction Attransition from or to ahorizontal inclined run install the SV4 5E45 and SV4 5E90 elbows in the same manner as the straight vent sections NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE Support Bracket Spacing LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS Typical Termination 4 Shown EE X n Exterior Wall X i Typical Termination Shown X The elbows feature a twist section to allow them to be routed about the center axis of their initial collar section to align with the required direction of the next vent run element Twist elbow sections in a clockwise direction only so as to avoid the possibility of unlocking any ofthe previously connected vent sections see Figure 17 on Page 14 1 Continue installation of horizontal inclined sections Continue with the installation of the straight vent sections in horizontal inclined run as described in Step E Install support straps every 5 ft 1 52 m along horizontal inclined vent runs using conventional plumber s tape See Figure 26 It is very important that the horizontal inclined run be maintained in a straight no dips and recommended to be in a slightly ele
82. rically grounded in accordance with local codes or inthe absence of local codes the National Electrical Code ANSI NFPA 70 latest edition In Canada the current CSA C22 1 Canadian Electrical Code CAUTION Label all wires prior to disconnec tion when servicing controls Wiring errors can cause improper and dangerous operation ATTENTION Au moment de l entretien des commandes tiquetez tous les fils avant de les d brancher Des erreurs de c blage peu vent entra ner un fonctionnement inad quat et dangereux Verify proper operation after servicing S assurer que l appareil fonctionne ad quatement une fois l entretien termin WIRING DIAGRAM MILLIVOLT GAS VALVES THERMOPILE APPLIANCE MOUNTED ON OFF SWITCH OPTIONAL GAS VALVE WALL MOUNTED ON OFF SWITCH OPTIONAL THERMOSTAT OPTIONAL Figure 35 Refer to Section A for millivolt appliances and Section B for electronic appliances The gas valve is set in place and pre wired at the factory on both models A Millivolt Wiring See Figure 35 1 An optional wall mounted switch unit mounted rocker switch wall thermostat or one of the optional remote control kits may used with this appliance 2 Wire the control switch within the millivolt control circuit using the 15 feet of 2 conductor wire supplied with the unit Note The supplied 15 feet of 2conductor wire has one end of each conductor connected to the gas valve circuit and the ot
83. rol compartments burners and circulating air passageways of the appliance be kept clean Remarque L installation et la r paration devrait tre confi es un technicien qualifi L appareil devrait faire l objet d une inspec tion par un technicien professionnel avant d tre utilis et au moins une fois l an par la suite Des nettoyages plus fr quents peuvent tre n cessaires si les tapis la literie et cetera produisent une quantit importante de pous si re Il est essentiel que les comparti ments abritant les commandes les br leurs et les conduits de circulation d air de l appareil soient tenus propres Do not use these appliances if any part has been under water Immediately call a qualified professional service technician to inspect the appliance and to replace any parts of the control system and any gas control which have been under water Ne pas utiliser cetappareil s il a t plong m me partiellement dans l eau Ap peler untechnicien qualifi pour inspecter l appareil et remplacer toute partie du syst me de commande et toute commande qui a t plong e dans l eau Only trim kit s supplied by the manufacturer shall be used in the installation of this ap pliance Seules les trousses de garniture fournies par le fabricant doivent tre utilis es pour l installation de cet appareil These appliances comply with National Safety Standards and are tested and listed by ETL Intertek Report No
84. rom the end and to the flat surface approximately 1 3 8 inches from the end Pull and extend outer flexible vent pipe Slide the outer flex pipe over the adapter col lar Ensure the flexible vent pipe completely engages the adapter collar to a distance of 1 3 8 inches from the end and that it is free from damage or tears Slide the gear clamp down and tighten it fully to secure the flexible vent to the adapter outer collar approximately 3 4 inch from the end of the flex Install three screws 120 degrees apart through the flexible vent pipe and into the adapter collar just below the gear clamp to provide additional security to the connec tion N gt c Route Flex Vent Ensure that the flex vent is properly routed to provide the required clearance Do notallow the flexible vent to bend in a radius tighter than 5 127 mm Refer to Figure 34 Space out the internal flex vent spacers evenly approximately every 6 inches and avoid kinking of inner pipe Support horizontal sections of flex with metal straps at 2 foot 0 61 m intervals NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE Securing Screw 3 places equally spaced just below gear clamp 1 3 4 44 mm Flexible Pipe and Adapter Inner Collar Overlap Securing Screw 8 places 120 apart equally spaced just below gear clamp D Install Firestop Spacers at ceilings and walls When Secure Flex pe
85. s about this center refer to Figure 16 on Page 14 17 Building Support Framing Support Brackets SV4 5E90 Elbow A Ceiling Figure 26 D Attach vent components to appliance To attach a vent component to the appliance collar alignthe dimpled end overthe collar adjusting the radial alignment until the four locking dimples are aligned with the inlets of the four incline channels on the collar see Figure 17 Page 14 Push the vent component against the collar until it fully engages then twist the component clockwise running the dimples down and along the incline channels until they seat at the end of the channels The unitized design of the Secure Vent components will engage and seal both the inner and outer pipe elements with the same procedure Sealant and securing screws are not required Note An elbow may also be attached to the appliance collar Attach in the same manner as you would a vent section E Attach vent components to each other Other vent sections may be added to the pre viously installed section in accordance with the requirements of the vent tables To add another vent component to a length of vent run align the dimpled end of the component over the inclined channel end of the previously installed section adjusting the radial alignment until the four lock ing dimples are aligned with the inlets of the four incline channels of the previous section TYPICAL HORIZONTAL VENT
86. sliding and pulling the bottom panel forward Pull the latches forward and down to release them from the door channel Ensure Gasket Is Not Rolled Up Into Door Frame Channel ea Header Spacing Top Standoffs 3 Pull the bottom of the door out a few inches and grasp it on the right and left Gently lift to release the door from its channel above the door Pull the door forward 4 Retrieve the glass door Visually inspect the gasket on the backside of the frame Gasket surface must be clean free of irregularities and seated firmly 5 Inspect the gasket for defects Ensure it is properly located Make sure the bead is not rolled up into the channel at the top of the door but remains flat against the top of the glass see Figure 44 6 Position the door in front of the firebox opening with the bottom of the door held away from the fireplace Figure 44 Hook the top flange of the door frame over the top of the firebox frame 7 Let the bottom of the door frame swing gently in towards the fireplace ensuring that the gasket seats evenly as the door frame draws shut Fasten the two latches located underneath the firebox floor to the door s vee flange Close both the latches securely 8 Install the hood Note the location of the three clips inside the top air channel above the door The clips are equally spaced on the top surface of the air channel opening Use a screwdriver to open the clips slightly if ne
87. tep 11 Hood Installation Page 32 Finishing Requirements Page 32 Step 12 Attaching Safety in Operation Warnings Page 33 Installation Accessories Page 34 Gas Conversion Page 36 Please read and understand these instructions before beginning your installation NATIONAL We recommend that our gas INSTITUTE hearth products be installed Sd and serviced by profes sionals who are certified in the U S by the National Fireplace Institute NFI as CERTIFIED NFI Gas Specialists www nficertified org PACKAGING The assembled vented gas fireplace is pack aged with One envelope containing the literature pack age which consists of the care and operations manual installation instructions safety in operation warning labels and warranty en velope is located inthe control compartment One vent restrictor to be applied as shown on Page 12 restrictor is taped to the envelope One hood located behind the door assembly One of the following contemporary floor media kits sold separately a Tumbled River Stone b Crushed Glass Obsidian Black c Crushed Glass Diamond White d Crushed Glass Deep Sea Blue e White Beach Sand Optional Contemporary facade kits sold separately INTRODUCTION The Millivolt appliances have a millivolt gas control valve with piezo ignition system If any optional accessories that wi
88. the contemporary media until the appliance installation has been completed the gas line con nected and tested for leaks and the initial burner operation has been checked out eThe size and position of the contemporary media was engi neered to give the appliance a safe reliable and attractive flame pattern Any attempt to use a different media in the fireplace will void the warranty and will result in incomplete combustion sooting and poor flame quality e Contemporary media get very hot and will remain hot up to one hour after gas supply is turned off Handle only when contemporary media are cool e This appliance is not designed to burnwood Any attemptto do so could cause irreparable damage to the appliance and prove haz ardous to your safety elf contemporary media are not installed according to the installation instructions flame impingement and improper combustion could occur and result in soot and or excessive production of carbon monoxide CO a colorless odorless toxic gas e Only use materials listed here Only contemporary media authorized have been tested for use within the firebox and its environment Donotattempt to use any different materials in the fireplace Doing so may be dangerous and will void the warranty and will result in incomplete combustion soot ing and poor flame quality Table Of Contemporary Media Cat Contemporary Media No Name H7536 MTRS Tumbled River Stone Contemporar
89. tighten in place using a pipe wrench external to the appliance betweenthe appliance outer wrapper and the framing Important Turn the last piece of gas pipe in the last fitting until the shut off valve is posi tioned in a way that allows the shut off valve handle to be accessed in the lower control compartment easily operated throughout its full range of motion Bring the flex line to the shutoff valve by hand and align the flare fittings Tighten the fittings by hand and then use an open end wrench to tighten completely 1 4 turn at a time NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE Lower Control Spring Door Compartment Latch Length Of Pipe With Attached Shut Off Valve Figure 40 LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS TEST ALL CONNECTIONS FOR GAS LEAKS FACTORY AND FIELD A WARNING Never use an open flame to check for leaks Turn on gas supply and test for gas leaks us ing a gas leak test solution also referred to as bubble leak solution Note Using a soapy water solution is an effective leak test solution but it is not recom mended because the soap residue that is left on the pipes fittings can result in corrosion over time Never use an open flame to check for leaks A Light the appliance refer to the lighting instructions label inthe control compartment or in the Care and Operation I
90. ue delivered must be reduced by either Using gas that has been derated by the gas company e Changing the burner orifice to a smaller size as regulated by the local authorities having jurisdiction and by the USA National Fuel Gas Code NFPA 54 ANSI Z223 1 latest edition or in Canada the CAN CSA B149 1 codes latest edition Install the appliance according to the regulations of the local authorities having jurisdiction and in the USA the National Fuel Gas Code NFPA 54 ANSI 2223 1 latest edition or in Canada the CAN CSA B149 1 latest edition NOTE Flame appearance will diminish 4 per thousand feet Burner Orifice Sizes Elevation 0 4500 feet 0 1372 meters Nat Gas drill size inches 49 0 073 0 045 21182 15110 Standard size installed at factory Standard size in LP conversion kit Part Cat Number Propane drill size inches Table 4 Gas Valve Diagrams See Figure 1 for Millivolt models and Figure 2 For Electronic Models Main Gas Control Knob Pilot Adjustment OFF PILOT ON Manifold Pressure Tap Inlet Pressure Tap HI LO Variable Flame Height Adjustment Figure 1 SIT Millivolt Gas Valve NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE Supply Pressure Tap Gas Manifold Regulator Mounting Screw Burner Stage Terminal Inlet U aea 1X Pilot Sta
91. vailable self finishing decorative contemporary Facade The decorative contemporary Facade is listed in the accessories sections of the Care And Operations manual and consists of three elements that can be mixed and matched for finishes to taste This appliance without the decorative con temporary Facade may be installed on the floor as any traditional fireplace use the framing dimensions as is as shown in Figure 11 on Page 10 but if the decorative contemporary Facade is to be installed the unit must be raised on a platform at least 18 high greater than 28 recommended refer to Figure 48 Note When raising the MLDVTCD appliance on a platform for mid wall installations add the platform height to any of the framing dimensions shown in Figure 11 on Page 10 and adjust the gas line dimensions shown in Figure 13 o Page 11 upwards accordingly The decorative contemporary Facade s significant dimensions are shown in Figure 48 The decorative contemporary Facade may be installed over drywall that is butted directly against the sides of the fireplace or non combustible wall finish materials no more than 3 4 thick that are placed in front of the fireplace black painted face DO NOT place the Facade over combustible materials thatare placed in front of the fireplace s black finished face Refer to the installation instructions that accompany the decorative contemporary Facade for installation details 35 44 3 4 18 Min
92. vated plane in a direction away from the fireplace of 1 4 rise per foot 20 mm per meter which is ideal though rise per foot run ratios that are smaller are acceptable all the way down to at or near level Itis important to maintain the required clear ances to combustibles 1 25 mm atall sides for all vertical runs and 3 76 mm at the top 1 25 mm at sides and 1 25 mm at the bottom for all horizontal inclined runs Use a carpenters level to measure from a constant surface and adjust the support straps as necessary LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT CONTEMPORARY DESIGN GAS FIREPLACES MODEL MLDVTCD 35 INSTALLATION INSTRUCTIONS J Assemble vent run to exterior wall If not previously measured locate the center of the vent at the exterior wall Prepare an opening as described in Step B Assemble the vent system to point where the terminus of the last section is located relative to the exterior surface to which the termination is to be attached as shown in Figure 28 and Table 8 If the terminus of the last section is not within this distance use the telescopic vent section SV4 5LA as the last vent section For wall thicknesses greater than that shown in Figure 28 refer to Table 8 Page 20 This Table lists the additional venting components needed in addition to the termination and adapter for a particular range of wall thicknesses K Attach termination adapter Attach the adapter adapt
93. y Glass H7537 woooos Obsidian Black H7538 contemporary Beach Contemporary Glass H7578 Diamond While H7579 McCG SB Glass H7581 MBLPK 35zG Merit Liner Kit Zen Remove the front glass enclosure panel see Removing Glass Enclosure Panels on Page 30 This fireplace is designed to accept a number of alternate contemporary media options allowing the homeowner to customize this product to fit any decor Install Zen Garden Refractory Panels MBLPK 35ZG 1 Porcelain panels come installed in the ap pliance Remove them by bending the tab Sliding the left and right side panels out first then removing the rear panel 2 Install Zen Garden panels Remove the lintel by removing two screws Insert the rear panel into firebox and po sition against the rear wall of the firebox see Figure 43 Detail A on Page 29 e Carefully insert the left side panel into firebox at a slight angle away from the sidewall Position the side panel as far back along the wall as it will go until it is against the rear panel and lower it into place while standing it upright and press ing it down over the knife edge at the rear of the sub floor The sub floor knife edge will cut into the refractory panel Repeat the same procedure for the right side panel see Figure 43 Detail B on Page 29 Re install the lintel NOTE DIAGRAMS amp ILLUSTRATIONS ARE NOT TO SCALE Install Tu

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