{"product_id":"ariston-coaxial-extension-500mm-3318078-flue-extension-pipe","title":"Ariston Coaxial Extension 500mm Flue Extension Pipe","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,sans-serif;color:#222;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAriston Coaxial Flue Extension — 500mm (Part No. 3318078)\u003c\/strong\u003e is a \u003cstrong\u003egenuine Ariston Ø60\/100 mm extension pipe\u003c\/strong\u003e used to lengthen the flue run where the standard horizontal flue kit or vertical flue kit does not reach the wall or roof termination point. This \u003cstrong\u003e500mm extension\u003c\/strong\u003e is the shorter of the two Ariston extension options (the 1000mm alternative is Part No. 3318077), making it the preferred choice for \u003cstrong\u003efine-tuning the flue run length\u003c\/strong\u003e on installations where a full 1-metre extension would overshoot, or where space constraints make only a short additional run practical. Connection is \u003cstrong\u003epush-fit\u003c\/strong\u003e throughout — no clamps or sealant are required.\u003c\/p\u003e\n\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin:22px 0;\"\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;border-radius:8px;padding:14px 18px;flex:1 1 150px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:20px;font-weight:700;\"\u003e500 mm\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eExtension Length\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;border-radius:8px;padding:14px 18px;flex:1 1 150px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:20px;font-weight:700;\"\u003eØ60\/100\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eCoaxial Diameter\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;border-radius:8px;padding:14px 18px;flex:1 1 150px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:20px;font-weight:700;\"\u003ePush-fit\u003c\/div\u003e\n    \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eNo Clamps Required\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#fff3cd;border-left:4px solid #e6a817;padding:14px 16px;border-radius:6px;margin:18px 0;\"\u003e\n  \u003cstrong\u003e⚠ Check Maximum Flue Run Before Adding Extensions:\u003c\/strong\u003e Each extension adds to the total effective flue length. Ensure the total run — including any elbows — does not exceed the \u003cstrong\u003emaximum permissible flue length for your boiler model and flue diameter\u003c\/strong\u003e. Exceeding the limit causes inadequate combustion air supply and is a safety and regulatory breach. Always refer to the boiler installation manual.\n\u003c\/div\u003e\n\n\u003cdiv style=\"overflow-x:auto;margin:24px 0;\"\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;\"\u003e\n  \u003ctr style=\"background:#008377CF;color:#fff;\"\u003e\n    \u003cth style=\"padding:10px 12px;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n    \u003cth style=\"padding:10px 12px;text-align:left;\"\u003eDetail\u003c\/th\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e3318078\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e500 mm\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003eØ60\/100 mm coaxial\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003ePush-fit with lip seal — no clamps or sealant required\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e\u003cstrong\u003eAlternative Length\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;border-bottom:1px solid #e0e0e0;\"\u003e1000 mm — Part No. 3318077\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px 12px;\"\u003e\u003cstrong\u003eCompatible Ranges\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px 12px;\"\u003eE-Combi EVO, E-Combi ONE, Clas ONE, Genus ONE, Alteas ONE and Ariston HE boilers with Ø60\/100 coaxial flue\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin:28px 0;\"\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:12px 16px;border-radius:6px 6px 0 0;font-weight:700;font-size:16px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\n  \u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\n    \u003csummary style=\"padding:14px 16px;cursor:pointer;font-weight:600;background:#f9f9f9;\"\u003eCan I cut the 500mm extension if my run is slightly shorter?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;border-top:1px solid #eee;\"\u003eAriston coaxial extension pipes \u003cstrong\u003ecan be trimmed\u003c\/strong\u003e — unlike the vertical flue terminal kit which must not be cut. Trim only the outer pipe, ensuring the inner flue pipe remains uncut. After cutting, deburr the outer pipe and confirm the lip seal still seats correctly before assembly.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\n    \u003csummary style=\"padding:14px 16px;cursor:pointer;font-weight:600;background:#f9f9f9;\"\u003eHow many extensions can I add to the horizontal flue kit?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;border-top:1px solid #eee;\"\u003eYou can add multiple extensions, subject to the \u003cstrong\u003emaximum permissible flue length for your boiler\u003c\/strong\u003e. For the Alteas ONE+ NET 35 kW on Ø60\/100, the maximum total run is 5 metres (including the terminal). For the E-Combi ONE boilers, the limits vary by output — always check the installation manual. \u003cstrong\u003eOne bracket per extension\u003c\/strong\u003e is required for adequate support.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\n    \u003csummary style=\"padding:14px 16px;cursor:pointer;font-weight:600;background:#f9f9f9;\"\u003eIs there a silver 500mm extension to match the Alteas ONE NET?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;border-top:1px solid #eee;\"\u003eYes — \u003cstrong\u003ePart No. 3319165\u003c\/strong\u003e is the 500mm extension in the silver colourway, matching the Alteas ONE NET's aesthetic. It is mechanically identical to 3318078.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\n    \u003csummary style=\"padding:14px 16px;cursor:pointer;font-weight:600;background:#f9f9f9;\"\u003eShould the flue run slope toward the boiler or toward the terminal?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 16px;border-top:1px solid #eee;\"\u003eHorizontal flue runs should slope \u003cstrong\u003eslightly downward toward the terminal\u003c\/strong\u003e (a fall of approximately 2–3° or 44 mm per metre) to allow condensate formed in the flue to drain away from the boiler. This also prevents low points where condensate could pool and cause corrosion or flue blockage. Ensure \u003cstrong\u003eno low points\u003c\/strong\u003e exist in the flue run when laying out extensions and bends.\u003c\/div\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Ariston","offers":[{"title":"Default Title","offer_id":64898392818013,"sku":"3318078","price":23.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/AristonCoaxialExtension500mm3318078.jpg?v=1780582285","url":"https:\/\/qualityheating.co.uk\/products\/ariston-coaxial-extension-500mm-3318078-flue-extension-pipe","provider":"AIZO Quality Heating","version":"1.0","type":"link"}