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HomeMy WebLinkAboutChimney Liner Technical Info copy 5 (2) CREOSOTE-FORMATION AND NEED FOR REMOVAL National Chimney Supply,Inc.#MH25531 When wood is burned slowly,it produces tar and other vapors,which combine with expelled moisture to form creosote.The creosote vapors may 3 Green Tree Drive 2147C Fletcher Ave. 2601 Elmory Road Bldg.#4 4219 Howard Ave. condense on the inside of the chimney liner during slow-burning firing periods.As a result,creosote residue accumulates on the chimney liner. South Burlington,VT 05403 Indianapolis,IN 46203 Finksburg,MD 20895 Kensington,MD 20895 When ignited,this creosote makes an extremely hot fire. *To properly inspect the liner system it is necessary to gain access to the top and/or bottom of the chimney.To inspect the liner from the bottom INSTALLATION INSTRUCTIONS FOR M-FLEX MODEL CB&AL STAINLESS STEEL CHIMNEY LINERS remove the connector pipe from the appliance and the chimney.Using a flashlight and a mirror look in and up the liner to visually inspect for M-Flex Stainless Steel Chimney Liner are manufactured by National Chimney Supply,Inc.This lining systems is designed and listed to be in- soot and creosote formation.Note: if the chimney has offsets you may not be able to see all the way to the top or to the bottom depending on stalled within masonry chimneys used to vent the products of combustion produced by heating appliances that burn oil,gas,or solid fuels. your inspection location.In this case it will be necessary to inspect the liner from both the bottom and the top of the chimney. *After inspection,if cleaning is required,use a plastic bristle brush the same size as the interior of the liner.Either push the brush up from the This liner should be installed by a nationally certified chimney sweep or other qualified chimney professional. bottom or down from the top using the appropriate number of extension pole for the height of the chimney.When cleaning from the top Each installation must be planned for the best performance of the appliance being installed.Refer to appliance manufacturer's instructions to remove the liner cap before inserting brush in the top of the liner. determine any special venting requirements for specific appliance. 8.)OPERATION The installer must contact the local building and fire code officials to determine any installation and inspection requirements.Building permits *FOR M-Flex liners,insulated with Premier Mix,used to vent a solid fuel burning appliance please note: may be required before installation.M-Flex CB and AL liner must be installed within the local building codes.Please remember,regardless of Solid fuel burning stoves can be used immediately after the installation is complete.However the flue gas temperatures entering the liner should national codes,the local building inspectors have ultimate jurisdiction. not exceed 500 degrees F.for a period of three weeks.A connector pipe flue gas thermometer will help monitor this procedure. Fireplaces can also be used immediately after the installation is completed.A small to moderate fire should be maintained for a period of Do not use any materials or components other than specified in these installation instructions. approximately three hours.After this time a normal fire can be established. MATERIALS NEEDED TO INSTALL M-FLEX STAINLESS STEEL LINER: 316E A1294C It is important that the operator not over fire the appliance during these initial periods. 316 Two piece or one piece tee AL Two piece or one piece tee PRODUCT INFORMATION:M-Flex 316L Tee Cap Tee Cap M-Flex 316L Stainless Steel Flexible Chimney liner is designed to reline existing chimneys or used as a liner in new construction.Manufactured 90 Deg.or 45 Deg.elbow: 90 Deg.or 45 Deg.elbow: in the highest quality,mill certified,316L grade alloy M-Flex Stainless Steel Flexible Chimney Liner has a high acid fighting capability.Listed Coupler Coupler by UL Laboratories to UL 1777 standard for zero clearance installation.M-Flex can be used to vent wood,wood pellet,coal,non-condensing gas 304 Top plate 304 Top plate and oil,making it the choice for venting all standard efficiency installations.M-Flex is available in 3"to 30"diameter to cover a wide range of Top Support Clamp or Top Kit Top Support Clamp or Top Kit requirements found in the field today. Storm Collar Storm Collar The unique manufacturing systems used to make M-Flex utilizes a continuous strip to stainless steel,interlocked and diagonally crimped to Liner Rain Cap Liner Rain Cap produce a gas and water tight lining system of superior strength and durability.M-Flex can be bent to negotiated offsets in chimneys and can be INSULATION MATERIALS (if applicable) ovalized to custom sizes to fit most any installation. The corrugated construction allows forPhe l Part# Description expansion and construction during the heat up and cool down periods,removing any stress on the PW4 Premier Wrap 1/4"Foil Faced Ceramic Wool Blanket system. PW2 Premier Wrap 1/2"Foil Faced Ceramic Wool Blanket PM Premier Mesh Protective Wire Mesh Sleeve M-Flex can be insulated with either a Premier Mix or Thermal poured insulation or with a foil facedique manufacturing system used to Foil Aluminum Foil Tape ceramic wool blanket to meet UL 1777 standards for chimney exteriors with zero clearance tothe M-Flex liner utilize a continuousFA1540(large/small) Mesh Clamp combustibles. ainless steel,inter"rized and diag onally crimped to produce a vapor and mois- PRMIX Premier Mix M-Flex can be shipped UPS in the following lengths 3"-50',4"-44',5"-38',6"-329,7"-26',8"-209 . and curability.The M-Flex liner can beture tight lining system of superior strength 1.)INSPECTION AND PREPARATION OF CHIMNEY All other diameters and lengths exceeding those above must be shipped road freight. The existing chimney must meet the following codes for proper construction and compliance requirements before the liner can be installed: formed to negociate effects in the chimney M-Flex Stainless Steel Flexible Chimney Liner carries a Life Time Warrantee for all fuels,with and can be evalized to custom sizes to fit * he chimney must be a minimum of ten feet high,and a maximum of one hundred feet in height. appliance efficiencies at 83 percent or lower. most installations. *The chimney must have the proper wall thickness,ie:minimum of 4 inches(nominal)solid masonry units. This corrugated construction *The chimney must extend at least three feet above the highest point where it penetrates the roof structure,and at least two feet higher than PRODUCT INFORMATION:M-FLEX 294C SS LINER allows for expansion any portion of the building or adjoining structures within ten feet. M-Flex 294C Stainless Steel Flexible Chimney Liner is designed to reline existing chimneys or and contraction during * If the chimney is constructed inside the structure,a minimum of two inches of unobstructed air space must surround the chimney to any used as a liner in new construction.Manufactured in the highest grade mill certified AL294C alloy the heat up and cool combustible material.If the chimney is constructed on the outside of the structure,one inch of unobstructed air space must be maintained down periods, M-Flex 294C has the greatest acid fighting ability to combat the acidic condensate produced by removing any between the chimney and all other combustible materials. todays high efficiency boilers.Listed by Underwriters Laboratories M-Flex 294C can be used to vent stress in the liner. *When the chimney passes through an floor,ceiling,or other horizontal or vertical structure,fire stops of a non-combustible material must be gas fired appliances with AFUE'S of 83%or greater.M-Flex 294C is available in diameters of 3" The M-Flex liner used. to 24"to cover the wide range of appliance requirements found in the field today. can be insulated **IF THE PROPER CLEARANCES LISTED ABOVE CANNOT BE DETERMINED THE LINER MUST BE INSTALLED WITH A UL LISTED CHIMNEY INSULATION** with LIL listed The unique manufacturing system used to make M-Flex 294C utilizes a continuous strip of stainless Premier Mix or with *Do not connect any appliance that burns a liquid fuel to a chimney liner used to vent a solid fuel burning appliance. steel,interlocked and diagonally crimped to produce a gas and water tight lining system of superior an LIL lised Premier * The connector pipe used to connect the appliance to the chimney liner must meet proper clearances to combustibles as determined by the strength and durability.M-Flex 294C is extremely flexible and can negotiate offsets in chimneys Wrap.Either type appliance manufacturer's installation instructions,the national building code,or the local building code,whichever is in force. I q, of insultaion * Before the liner is installed the chimney must be cleaned thoroughly to remove all deposits of soot,creosote,or glazed creosote.A proper with ease.It can also be ovalized to custom configurations to fit most any installation.The corrugated will meet LIL construction allows for expansion and contraction within the liner removing any stress on the liner 1777 standards inspection must be done to determine that the chimney is structurally sound.If the structural integrity of the chimney is found to be in question, system. for chimney exterior ie:missing,loose,or cracked masonry or mortar joints,repairs must be made before installation of the chimney liner. with zero clearance 2.)SIZING THE PROPER LINER DIAMETER For best performance of the appliance and the venting system,M-Flex 294C can be insulated with to combustibles. either Premier Mix poured insulation or Premier Wrap ceramic wool blanket. Insulation should Backed by a For solid fuel burning appliances,the cross sectional area of the liner shall not be less than the cross sectional area of the appliance outlet collar. The cross sectional area of the flue shall not be more than three times the cross sectional area of the appliance outlet collar.For solid fuel burning always be used on exterior chimneys. Lifetime Warranty,a fireplaces,the liner should be at least one-tenth the square inches of the square inches of the fireplace opening.Please note that this formula M-Flex 294C carries a Life Time Warrantee for all installation venting condensing gas appliances. yearly inspection will guarantee that your can vary based on height of the chimney and other determining factors. Call National Chimney Supply,Inc. should you have any Flex 294C can be shipped UPS in the following lengths: 3"-50',4"-40',5"-389,6"-32',7"-269, chimney will be venting safely for many questions. 8"-20'.All other diameters and lengths exceeding these above must be shipped road freight. years to come. *For liner sizing of gas and oil burning appliances please refer to N.F.P.A.54 for gas and N.F.P.A.31 for oil.Also refer to appliance manufacturer's A PREMIER WRAP fl, instructions.Incorrectly sized liners for these appliances can lead to performance problems and condensation with the lining system. Please call National Chimney Supply,Inc.should you have any questions. CBIN-001 (Rev.05/10) 3.)DETERMINE IF THE CORRECT SIZE LINER WILL FIT INTO THE CHIMNEY of smoke chamber.At this point hold liner in place by pushing 2x4 tee up through damper and across bottom of liner.Install top hardware at * The M-Flex Stainless Steel Chimney Liner can be installed with in the existing flue tile or the flue tile can be removed.It is extremely top of chimney as described in previous section. important that the correct size liner will fit into the chimney.Certain factors,such as chimney construction and offsets in the chimney,may *To install the base plate through the face of the fireplace will require more work and masonry skill.Start by removing two to four bricks in change the size of the interior of the chimney.It is best to prove the interior of the chimney before trying to install the chimney liner.This can either the face or the back of the fireplace at the level of the top of the smoke chamber.If the smoke chamber is constructed correctly there be done by lowering a short piece of the intended size liner down the chimney to see if it will pass all the way to the bottom.You can also use should be approx.eight inches of masonry to go through.Once this opening has been accomplished slide the base plate into the hole over the a liner guide cone to accomplish this.If the chimney liner will need to be insulated this will effect the required dimensions needed to install top of smoke chamber. Slide the liner down from the top of the chimney and through the hole in the base plate. Secure with stainless steel the liner.If the round configurations needed to vent the appliance will not fit the liner may be formed to an oval configuration to fit,however rivets,stainless steel screws,or place a support clamp on the liner above the base plate.This will keep the liner from sliding down through ovalizing the liner will change the cross sectional area.Please call National Chimney Supply,Inc.with any questions. the base plate until the top hardware has been installed.Once this is complete install top hardware as described in previous section.Seal hole 4.)INSTALLING M-FLEX STAINLESS STEEL CHIMNEY LINER in masonry with like material. * Make sure the thimbles to be used in the installation are in the proper chimney to maintain the required clearance to combustibles for the 6.)INSULATING M-FLEX STAINLESS STEEL CHIMNEY LINER connector pipe from the appliance.If the clearances are not correct reconstruct the thimble to the proper position. A note about insulating stainless steel chimney liners: Not all situations require insulation of the chimney liner.The UL1777 Standard for *Determine the length of the liner by measuring from the bottom most thimble to the top of the chimney.To this measurement add approx.six installing stainless steel chimney liners require insulation because the non-code conforming chimney has zero clearance to combustibles or some inches to accommodate the crown and top hardware.Cut liner to length. other defect.Thus the UL1777 Standard is in place for fire protection.The definition of a code Conforming chimney is one that meets or exceeds *Remove the snout from the two part tee and attach the tee body to liner with either stainless steel pop rivets,or stainless steel screws.If the N.F.P.A.211 for construction of chimneys,ie: proper clearances to combustibles,intact 5/8 fireclay flue liner or equivalent,minimum four inch liner is going to be insulated with a ceramic wool blanket,install the blanket now.If a tee cap is going to be used,attach it to the body now. (nominal) solid chimney wall. If the chimney meets the requirement for code conforming the only reason to reline would be for appliance *Take the tee snout that was removed from the tee body and extend the draw band completely,slide the tee snout into the thimble with the draw performance.In case of relining for high efficiency gas or oil fired appliances(over 83%)no insulation may be required.However,regardless of band centered in the flue. Lower the existing chimney,insulating the chimney liner will improve the performance of the appliance that is connected to it.Because the insulated liner liner down from the top of the chimney, Mimimumchimneydearanc will stay warmer the flue will not cool as quickly and will not condense as rapidly. In wood burning appliances this will reduce the amount of to brick and combuatibles and feed the tee bodythrough the draw 2 in.(51 mm) Mimimum clearance System creosote that will form in the liner.In oil and as burning applications the likelihood of condensation,especially on start u of the appliance will g * 12 in.(305 mm) A Minimum 3.5 in.(90 mm)thick brick masonry wall framed g g pp p Y p pp band on the tee snout.You may have to of brick info combustible wall with a minimum of 12 in. 305 mm greatly reduce.While fire protection is the main concern insulating liners even if not required will a dividends b increasing performance and Y r ( ) g Y P g q pay Y g rotate the liner to align the hole in the brick separation from clay liner to combustibles.Fireclay efficiency. g liner(ASTM C 315.Standard Specification for Clay Fire Y tee bodywith the snout.Once you have Chimney 'Chimney Linings,or equivalent),minimum 5/8(16 mm)wall fi flue connector thickness,shall run from outer surface of brick wall to,and but * Please Note:For the installed liner system to meet UL standards,all UL listed components used must be installed with proper clearances. aligned the tee,tighten the draw band I `Fireclay not beyond the inner surface of chimney flue liner and shall g g Minimum 1il n.(305 mm) Masonry cMmney liner be firmly cemented in place. to secure the snout to the tee body. ecombusibles constructed toNFPA211 THERE ARE TWO METHODS OF INSULATING M-FLEX STAINLESS STEEL LINERS Y Clearance:12 in.(305 mm) * Seal the area around the tee snout with Method#1-Insulating with Premier Mix B Solid-insulated,listed factory-built chimney length of the mortar to form an airtight seal. Minimum chimney clearance from same inside diameter as the chimney connector and *Premier Mix is poured into the chimney around the liner after the liner is installed.Premier Mix is premixed and water is added to the mix at masonry to sheet steel supports and having 1 in.(25.4 mm)or more of insulation with a *At the to of the chimney there are 2 combustible2-in.(61 mm) minimum 9 in.(229 mm)airspace between the outer wall the job site.To determine the amount of Premier Mix needed to insulate a specific liner please call National Chimney Supply,Inc.. P Y Mimimum clearance Nonsoory'ub of the chimney length and combustibles. *No minimum thickness of Premier Mix around a liner installed in acode-conforming chimney is required.The required clearance between Options t0 seal and support the liner: Facto -built rehacto cement gin.(229 mm) p pp ry ry The inner end of the chimney length shall be flush with the chimn len length ev g Chimney inside of the masonry chimney flue and shall be sealed to the liner and the interior of the mason chimney is 1"inches.In a non-code conformingchimney,ie:zero clearance to combustibles no flue Option 1 is to install a top kit.This is Chimney length f connector the flue and to the brick masonry penetration with non-flush masonry Y Y+ accomplished b first removing the I of flue with inside water-soluble refractory cement.Supports shall be securely liner,etc.the minimum recommended thickness of Premier Mix is One inch.The required clearance between the insulation and the interior P Y g _ Use chimney fastened to wall surfaces on all sides. -•mfrs.parts to Fasteners between supports and the chimney length shall wall of the masonry Chimney is 0"inches. rain cap portion of the kit by loosening Airspace Chimney attah connector PP Y 9 9 in.(229 mm)min. flue securely not penetrate the chimney liner. the top worm drive clamp a few turns. Solid-insulated, Premier Mix is mixed with two to three gallons of water in a mortar pan or wheelbarrow.When mixed correctly the Premier Mix will have a ;7. Clearance:9 in.(229 mm) Masonry chimne listed factory-built Next, install the plate assembly overchimney length grainy consistency and little or no water will come out when squeezed in your hand.Once mixed the Premier Mix is poured into the chimney constructed to NFPAC Sheet steel chimney connector,minimum 24 gauge[0.024 in. the liner,tighten the worm drive screw Sheet Steel Supports (0.61 mm)]in thickness,with a ventilated thimble,minimum 24 around the liner.The liner should be vibrated during the pouring process to help the Premier Mix settle around the liner. Continue to pour gauge[0.024 in.(0.61 mm)]in until snug,then attach the plate to the Minimum chimney clearance to sheet thickness,having two 1 in.(25.4 mm)air channels,separated Premier Mix until the chimney is full to the top.Install top hardware as described in previous section. masonry with silicone or to cons.Cut sees supports and combustibles from combustibles by a minimum of 6 in.(152 mm)of glass *A Premier Mix insulated M-Flex liner can be used after the installation is com lete.Curin of the mix will occur over a roximatel 28 da s `J p 2;n.(51 mm) fiber insulation.Opening shall be covered,and thimble h g hh Y Y the liner flush with the top of the Two I in.(5.4 supported with a sheet steel support,minimum 24 gauge with approximately 70%of the curingprocess occurring in the first week.Drying time of the Premier Mix will depend on the thickness of •• each 1 in.(25.4 mm) [0.024 in(0.61 mm)]in thickness. PP 5' p g �' g p assemblyand reinstall the rain cap .Chimney Supports shall be securely fastened to wall surfaces on all the mix and the absorption of the masonrychimney.Drying time will be accelerated b using the heating appliance. p connector sides and shall be sized to fit and hold chimney section. g Y g g PP portion of the top kit. Fasteners used to secure chimney section shall not penetrate Method#2-Insulating with Premier Wrap ,N•r Chimney Minimum6 in. chimney flue liner. Option 2 is to install a top plate, top Two ventilatedair flue (152 mm)glass Clearance 5 in.(152 mm) Premier Wrap is installed around the liner before it is installed in the chimney. channels each 1 fiber insulation support clamp and storm collar.Place : '"' i Premier Wrap is one ha inch thick an one quarter me is eight poundensity,ceramic woo blanket with a three milaluminum of ace. � in.(25.4 mm); Masonry chimney , D Solid-insulated,listed factory-built chimney length with an the hole in the top plate around the liner construction of constructed toNFPA211 Sheet steel supports inside diameter 2 in.(51 mm)larger than the chimney Aluminum tape,retractable wire mesh,and mesh clamps will be needed to complete the installation.Premier Wrap is available in four widths, sheet steel connector and having 1 in.(25.4 mm)or more of insulation, , , , , , , , , , , , , and center the liner and top place on serving as a pass-through for a single wall sheet steel chimney 24' to fit liners 4' to 6' diameters,30' to fit 7' to 8' diameters,36' to fit 9' to 10' diameters,and 48' to fit I I to 14' diameters. Minimum chimney clearance to sheet steel supports and connector of minimum 24 gauge[0.024 in.(0.61 mm)] top of the chimney,secure to chimney combustibles in.(51 mm) thickness,with a minimum 2 in.(51 mm)air space between the In acode-conforming chimney no Premier Wrap insulation is required.In acode-conforming chimney that must have the tiles removed a 4Sheet steel supports Mimimumclearanoe2in.(51mm) outer wall of chimney section and combustibles) top with masonry screws, silicone orMinimum length of chimney section shall be 12 in.(305 mm). single one quarter inch Premier Wrap is required.In a non-code conforming chimney a single one-half inch Premier Wrap is required.The mortar. Attach the support clampimney 1 in.(25.4 min)air space Chimney section concentric with and spaced 1 in.(25.4 mm) required clearance between the insulation and the interior of the masonry chimney is 0"inches. d n to chimney length away from connector by means of sheet steel support plates around liner and secure. Place a beadon both ends of chimney section.Opening shall be covered, To install Premier Wrap onto the liner,lay the blanket open with the foil side down.Cut blanket length wise so that it will overlap approx.one Chimne and chimney section supported on both sides with sheet steel of silicone around top of storm collar connector " supports of minimum 24 gauge[0.024 in.(0.61 mm)]thickness. inch.Place liner on blanket and wrap around liner.Run foil tape the complete length of the seam on the blanket,next cut pieces of foil tape to seal.Install rain ca on to of liner Chlmneyconnecor Supports shall be securely fastened to wall surfaces on allapprox.eight inches long,and tape across seam about every foot.Next place liner into retractable mesh sock.Using mesh clamp,clamp at I� P sides and shall be sized to fit and hold chimney section.and secure. irspace2 in.(51 mm) _ 1 / Chimney length Fasteners used to secure chimney section shall not end of liner just above tee body.Pull retractable mesh sock to top of liner,continue to pull until mesh sock has retracted tightly around the Masonrychimney Sheet steel supports penetrate chimney flue liner. * To facilitate inspection and cleaning, constructed toNFPA211 Clearance:2 in.(51 mm) liner,clamp mesh at top and cut off excess mesh.Install liner as described in previous section. wall penetrations shall not be placed 7.) INSPECTION AND MAINTENANCE INSTRUCTIONS directly behind the heating appliance. Additional requirements: an Should you have questions concerning inspection and maintenance of the M-Flex liner 1.Insulation material used as part of wall pass-through system shall be of noncombustible material and shall have a Y y q gns p 5.)INSTALLING M-FLEX STAINLESS thermal conductivity of 1.0 Btu-in./hr-ft2-°F(4.88 kg-cal/hr-m2°C)or less. Please contact: 2.All clearances and thicknesses are minimums;larger clearances and thicknesses shall be permitted. STEEL LINER FOR A FIREPLACE 3.Any material used to close up an opening for the connector shall be of noncombustible material. National Chimney Supply,Inc. * When installing a liner for a fireplace 4.A connector to a masonry chimney,except for System B,shall extend in one continuous piece through the wall pass- Corporate Headquarters application no tee is used on the bottom through system and the chimney wall to the inner face of the flue liner,but not beyond. 3 Green Tree Drive of the liner.Instead a base plate is used South Burlington,VT 05403 to seal the liner at the top of the smoke chamber.The base place can be installed by working up through the damper opening or by removing (800)897-8481 bricks in the face of the fireplace at the level of the top of the smoke chamber. * Inspection of the M-Flex liner should be done in a minimum,once per year,at no more than 12 month intervals from date of installation.If * Installing the base place from the damper opening is accomplished by sliding the liner down into the smoke chamber from the top of the the liner is used to vent a solid fuel burning appliance,inspections should be done at intervals of every 2 months during the heating season. chimney.Put the base plate up through the damper opening and around the bottom of the liner.Secure the base plate to the liner with stainless Upon inspection,if soot or creosote accumulations have reached a 1/4"or more the liner should be cleaned.This inspection and cleaning should steel rivets,stainless steel screws,or a support clamp below the base plate.Once base plate is secured pull liner up and seat base plate on top be carried out by a nationally certified chimney sweep,or other qualified chimney professionals.