{"product_id":"leier-multikeram-las-chimney-system","title":"MULTIKERAM LAS Chimney System - Leier","description":"\n\u003ch2\u003e\u003cstrong\u003eShort description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe top of the Leier range. W3G hybrid system with a pre-insulated flue liner, the only one that takes condensing boilers. Four diameters, 140 to 200 mm.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFull description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eLAS stands for the combined air and flue gas system: the chimney carries the flue gas up and the combustion air down, so a sealed-combustion or condensing boiler draws its air from outside instead of from the room. In an airtight, well-insulated house that is not a refinement — it is the difference between a boiler that works and one that starves.\u003c\/p\u003e\u003cp\u003eThe build differs from MULTIKERAM: the fireclay liner arrives already insulated, positioned by a centring ring inside the outer block. Fewer components per metre, less to get wrong on site.\u003c\/p\u003e\u003cp\u003eLike MULTIKERAM it is W3G rated, so it handles both a soot fire and the condensate of a low-temperature system. Leier positions it for houses where the fuel is still undecided, and recommends it for nZEB — nearly zero-energy — buildings.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCombined air and flue gas system — combustion air from outside the room\u003c\/li\u003e\n  \u003cli\u003eThe only Leier system for condensing boilers\u003c\/li\u003e\n  \u003cli\u003eW3G certified: soot-fire resistant and moisture insensitive\u003c\/li\u003e\n  \u003cli\u003ePre-insulated fireclay liner with a centring ring — fewer parts per metre\u003c\/li\u003e\n  \u003cli\u003eRecommended for nZEB and airtight houses\u003c\/li\u003e\n  \u003cli\u003eFour diameters: 140, 160, 180 and 200 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eTechnical specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eProduct type: combined air and flue gas ceramic chimney system\u003c\/li\u003e\n  \u003cli\u003eBrand: Leier\u003c\/li\u003e\n  \u003cli\u003eRange: MULTIKERAM LAS\u003c\/li\u003e\n  \u003cli\u003eCertification: W3G\u003c\/li\u003e\n  \u003cli\u003eFlue diameters: 140, 160, 180 and 200 mm\u003c\/li\u003e\n  \u003cli\u003eOuter dimensions: 35 x 35 cm (140), 40 x 40 cm (160 \/ 180), 48 x 48 cm (200)\u003c\/li\u003e\n  \u003cli\u003eWeight: 103–132 kg per linear metre, depending on diameter\u003c\/li\u003e\n  \u003cli\u003eConsumption per linear metre: 1 insulated liner, 1 centring ring, 3 outer blocks\u003c\/li\u003e\n  \u003cli\u003eUse: gas and oil including condensing, pellets, wood, mixed burners, fireplaces, stoves\u003c\/li\u003e\n  \u003cli\u003eSold by: linear metre\u003c\/li\u003e\n  \u003cli\u003eDelivery: made to order, subject to supplier stock\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eRecommendation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eTake this one if the house is airtight, if the boiler is condensing or sealed-combustion, or if the fuel is not settled. In an older, leaky house on a wood boiler it is more chimney than the job needs — LSK does that work for less. Size the flue from Leier's diagram using the appliance output and the useful height, and order the full height in one go, terminal set included.\u003c\/p\u003e","brand":"Leier","offers":[{"title":"140 mm","offer_id":57161660006778,"sku":"HGM-CS-LIR-MKL-14","price":0.0,"currency_code":"RON","in_stock":true},{"title":"160 mm","offer_id":57161660039546,"sku":"HGM-CS-LIR-MKL-16","price":0.0,"currency_code":"RON","in_stock":true},{"title":"180 mm","offer_id":57161660072314,"sku":"HGM-CS-LIR-MKL-18","price":0.0,"currency_code":"RON","in_stock":true},{"title":"200 mm","offer_id":57161660105082,"sku":"HGM-CS-LIR-MKL-20","price":0.0,"currency_code":"RON","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/5050\/8410\/files\/MULTIKERAM-LAS.webp?v=1786606573","url":"https:\/\/heligom.com\/en\/products\/leier-multikeram-las-chimney-system","provider":"HELIGOM","version":"1.0","type":"link"}