{"product_id":"ideal-logic-combi-24-30-35-e-24-30-35-es-24-30-35-expansion-vessel-8l-175551","title":"IDEAL LOGIC COMBI 24 30 35 \u0026 E 24 30 35 \u0026 ES 24 30 35 EXPANSION VESSEL 8L 175551","description":"\u003ch1\u003e\u003cspan\u003eIdeal Logic Combi 24 30 35 E ES Boiler Expansion Vessel 8L 175551\u003c\/span\u003e\u003c\/h1\u003e\n\u003ch2\u003e\u003cspan\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eIdeal Logic Combi Boiler Expansion Vessel (Part Number: 175551)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is an 8-litre pressure management component designed for selected \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eIdeal\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e heating systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe expansion vessel forms part of the boiler's sealed central heating circuit, accommodating the expansion of water as its temperature increases during operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe vessel contains a flexible diaphragm that separates the heating water from a pressurised gas chamber. This arrangement allows the vessel to absorb changes in water volume, helping to maintain stable system pressure and reduce excessive pressure increases.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCorrect expansion vessel operation is important for maintaining appropriate pressure conditions within the heating system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eℹ️ Product Condition Options:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis part may be available in \u003c\/span\u003e\u003cem\u003e\u003cspan\u003eNew\u003c\/span\u003e\u003c\/em\u003e\u003cspan\u003e or \u003c\/span\u003e\u003cem\u003e\u003cspan\u003eRefurbished\u003c\/span\u003e\u003c\/em\u003e\u003cspan\u003e condition. Please select your desired option from the dropdown menu above. Refurbished expansion vessels should be professionally inspected and tested to confirm correct pressure retention, diaphragm integrity and overall condition before installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eTechnical Insight \u0026amp; Common Failure Symptoms\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e8-litre expansion vessel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is designed to accommodate the thermal expansion of water within the boiler's sealed central heating system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAs the heating water warms and expands, the vessel's internal diaphragm moves against the pressurised gas chamber, allowing the additional water volume to be accommodated without excessive pressure increases.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOver time, expansion vessel performance may be affected by loss of pre-charge pressure, diaphragm deterioration, internal corrosion or leakage.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePossible symptoms that may indicate an expansion vessel or associated heating system problem include:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eBoiler pressure rising excessively when the heating is operating.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eSystem pressure dropping after the heating cools.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFrequent need to repressurise the heating system.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eWater discharging from the pressure relief valve.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eSignificant pressure fluctuations between hot and cold operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eExpansion vessel failing to retain its pre-charge pressure.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eVisible leakage, corrosion or damage affecting the vessel.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThese symptoms do \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003enot necessarily confirm a faulty expansion vessel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, as similar problems may result from system leaks, pressure relief valve faults, incorrect filling pressure or other heating components. Correct professional diagnosis should be carried out before replacement.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eCompatibility\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThis part (MPN: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e175551\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e) is associated with selected \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eIdeal Logic Combi, Combi E and Combi ES\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e boiler systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePlease verify the exact boiler model, GC number, original part number, vessel capacity and connection arrangement against the manufacturer's technical documentation before ordering to ensure correct fitment.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eSafety Advice\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003e\u003cspan\u003eBoiler expansion vessels and associated pressurised heating components should only be inspected, removed or installed by a \u003c\/span\u003e\u003c\/em\u003e\u003cstrong\u003e\u003cem\u003e\u003cspan\u003esuitably qualified and competent heating engineer\u003c\/span\u003e\u003c\/em\u003e\u003c\/strong\u003e\u003cem\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cspan\u003eAlways isolate the appliance and allow the heating system to cool before carrying out any work. The heating circuit must be safely depressurised in accordance with the manufacturer's servicing instructions. The expansion vessel pre-charge pressure, system filling pressure and all relevant connections must be checked. Appropriate leakage, pressure and operational safety tests must be completed before the boiler is returned to service.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Ideal","offers":[{"title":"New \/ New Other","offer_id":50514489671783,"sku":"N7408","price":69.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0615\/0923\/8887\/files\/1780925.jpg?v=1792397066","url":"https:\/\/nationalboilerspares.co.uk\/products\/ideal-logic-combi-24-30-35-e-24-30-35-es-24-30-35-expansion-vessel-8l-175551","provider":"National Boiler Spares","version":"1.0","type":"link"}