Isokern Chimney Systems Product Brochure

More documents

Recommendations

Info

DM Double Module - Technical SpecificationsStructural Timber ClearancesWhere a chimney is required to pass through a structural floor,a sliding joint must be made using mineral wool or similar noncombustiblematerial. A minimum 38mm clearance must bemaintained between the outer face of the chimney and anystructural timber or loose combustible material. Floor boards,skirting boards and other non-structural components may,however, be in contact with the chimney.OffsetsBends can be achieved using purpose-made offset blocks.These blocks do not have a separate flue block. To maintainthe correct matching of the joints the last flue block immediatelybelow the first offset block should be trimmed to bring it tothe same height as the top of the outer casing. Above the lastoffset block a starter flue block must be used. All offset blocksmust be fully supported.FixingsAn external chimney must be tied to the structure at maximumintervals of 1.5m and at the point where it departs from theroof line. Ties should be Isokern stainless-steel ties and boltsfor use between the casings; or suitable galvanised-steelstraps and bolts around the casings.Heights Above Roof/ReinforcementDM Chimneys can be installed without reinforcement up to1.4m above the roof line. All casing and flue block joints to besealed with lip glue. Above 1.4m, or if wind exceeds 44ms,please consult Schiedel Isokern Chimney Systems.DM outer casings include holes for reinforcement rods, theserods should be grouted with 3:1 sand: cement mix. In somecases, as with free-standing chimneys, it may be necessaryto secure the reinforcement into the chimney foundation. Inthis way chimneys can be constructed up to 9m free-standing.If the DM system is constructed inside a masonry chimneystack, (built from foundations not off a corbel unit) which isconstructed so that the height of the chimney stack does notexceed 4.5 times its overall horizontal dimension in accordancewith BS6461 Part 1 1984, reinforcement is not required. TheDM casings should be tied to brickwork using wall ties.Lead Flashings/External FinishThere are two alternative methods to fix a flashing to theouter casings of a rendered stack:Fold the flashing in over the edge of the casing protrudingthrough the roof by approximately 10mm and fix accordingly.Scorch the protruding casings with a disc cutter or block sawto achieve a 10mm deep channel parallel with the roof.Fold the edge of the lead flashing into the channel and fixaccordingly.If the chimney is brick clad above the roof then traditionalstepped flashing should be used. Proceed to normal buildingpractice using a lead tray.The lead tray should be turned up on the outside of theflue blocks by approximately 50mm.Weep holes should be provided below the chimney cappingto allow for any water vapour to escape between the innerflue blocks and outer casings. Finally traditional flaunching isused to seal around the protruding flue block or chimney pot.Outer SurfaceCasings should be dry lined or plastered internally. Externallythey should be finished with waterproof render or brick cladding.10
Liner System - for new and existing chimneysThe pumice liner system comes in a range of 18 diameters from 130mm to 1000mm withT Liners, Liner Support Blocks, and Access Blocks for ease of connection to the appliance.The insulated flue linerfor traditional buildSuitable for use with inserts, stoves, pellet stoves(outlet temperature minimum 150˚C), cookers, openfires and Manor firechestsLightweight materials, easy to handle and cutHighly insulating pumice for better draw andminimum heat loss600mm and 1000mm lengths mean fewerjoints and fast to install18 flue sizes availableGood resistance to temperature variations givesthe maximum performance for your applianceCE certified to EN1857 with the designationT450, N2, D, 3, G.Irish Board of Agrément approvalSand/cement flaunchingaround flue lineror chimney potLead trayand flashingStructural timber40mm from outsideof chimney or 200mmfrom inside of flue linerJoints sealed with lip glueStandard flue liners withsocket uppermostVoids filled with lecainsulation mixSupport block andadaptor for stoveconnectionCast in situ slab tosupport chimneySupport block and adaptorfor connection to flue pipeCast in situ slabto support chimneyFree standing stoveGlass fronted insert fireInsert fire11
Page 1 and 2: AUGUST 2010Pumice -naturally better
Page 3 and 4: Energy efficiency and chimneysIn th
Page 5 and 6: DM Double Module Chimney SystemWhen
Page 7 and 8: DM 36 - for smaller output inserts,
Page 9: DM 54 - for larger open fires and a
Page 14 and 15: FirechestsThe ideal solution for cr
Page 16: 14 Haviland RoadFerndown Industrial

Isokern Chimney Systems Product Brochure

Create successful ePaper yourself

Delete template?

Save as template?