{"product_id":"worcester-greenstar-34-35-37-38-40-42-cdi-dhw-20-p-heat-exchanger-87161082120","title":"WORCESTER GREENSTAR 34 35 37 38 40 42 CDI DHW 20 P HEAT EXCHANGER 87161082120","description":"\u003ch1\u003e\u003cspan\u003eWorcester Greenstar CDi Boiler DHW 20 Plate Heat Exchanger 87161082120\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\u003eWorcester Greenstar Domestic Hot Water (DHW) 20 Plate Heat Exchanger (Part Number: 87161082120)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a replacement plate heat exchanger designed for use within selected Worcester Bosch Greenstar boiler systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe DHW plate heat exchanger transfers heat from the boiler's primary heating circuit to the domestic hot water supply without allowing the two water circuits to mix.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIts function is to support efficient heat transfer, allowing the boiler to provide hot water when required.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eℹ️ \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eProduct Condition:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis product may be available in \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNew o Refurbished \u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003econdition. Please select the required option when ordering.\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 DHW plate heat exchanger uses a series of metal plates to transfer heat between the primary heating water and the domestic hot water circuit.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOver time, heat exchanger performance can be affected by limescale deposits, internal restrictions, corrosion or leakage.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePossible symptoms that may require investigation of the heat exchanger or associated components include:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eReduced domestic hot water temperature\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFluctuating hot water temperatures\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eReduced hot water flow caused by internal restrictions\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eHot water taking longer than expected to reach the required temperature\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eSigns of leakage around the heat exchanger\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eReduced heat transfer performance\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 plate heat exchanger\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, as similar problems may be caused by sensors, flow restrictions, diverter valves or other boiler components. Correct diagnosis should be carried out before replacement.\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 plate heat exchangers and associated hydraulic 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 relevant water supplies before carrying out any work. Follow the manufacturer's installation and servicing instructions, and ensure that all required pressure, leakage and operational safety checks are completed before the boiler is returned to service.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Worcecster","offers":[{"title":"New \/ Genuine","offer_id":50432228425831,"sku":"N9574","price":169.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0615\/0923\/8887\/files\/1015371.jpg?v=1791791729","url":"https:\/\/nationalboilerspares.co.uk\/products\/worcester-greenstar-34-35-37-38-40-42-cdi-dhw-20-p-heat-exchanger-87161082120","provider":"National Boiler Spares","version":"1.0","type":"link"}