{"product_id":"viessmann-7828749-flow-sensor-vitodens-100-w-wb1b-26kw-30kw-35kw-combi","title":"Viessmann 7828749 Flow Sensor \/ Vitodens 100-W WB1B 26kW 30kW 35kW Combi","description":"\u003ch3 data-section-id=\"arqhx5\" data-start=\"99\" data-end=\"123\"\u003e\u003cspan role=\"text\"\u003e📄\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"106\" data-end=\"121\"\u003eDescription\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-start=\"124\" data-end=\"277\"\u003eGenuine\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"132\" data-end=\"145\"\u003eViessmann\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003epart number\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"158\" data-end=\"169\"\u003e7828749\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– a\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"174\" data-end=\"208\"\u003edomestic hot water flow sensor\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edesigned for use in\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"229\" data-end=\"276\"\u003eViessmann Vitodens 100-W WB1B combi boilers\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"279\" data-end=\"496\"\u003eThis sensor detects water flow demand when a hot tap is opened and signals the boiler to ignite and produce domestic hot water. It is a vital component for correct hot water operation and efficient boiler performance.\u003c\/p\u003e\n\u003cp data-start=\"498\" data-end=\"701\"\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"502\" data-end=\"525\"\u003e7828749 flow sensor\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis commonly replaced when diagnosing faults such as intermittent hot water, no hot water demand detection, or flow-related boiler errors.\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"703\" data-end=\"706\"\u003e\n\u003ch3 data-section-id=\"96pasg\" data-start=\"708\" data-end=\"733\"\u003e\u003cspan role=\"text\"\u003e⚙️\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"715\" data-end=\"731\"\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-start=\"734\" data-end=\"1078\"\u003e✅ Genuine\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"744\" data-end=\"757\"\u003eViessmann\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOEM Part –\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"769\" data-end=\"780\"\u003e7828749\u003c\/strong\u003e\u003cbr data-start=\"780\" data-end=\"783\"\u003e✅\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"785\" data-end=\"818\"\u003eDHW Flow Sensor \/ Flow Switch\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e💧\u003cbr data-start=\"821\" data-end=\"824\"\u003e✅ Detects domestic hot water demand\u003cbr data-start=\"859\" data-end=\"862\"\u003e✅ Signals boiler to ignite for hot water 🔥\u003cbr data-start=\"905\" data-end=\"908\"\u003e✅ Essential for combi boiler operation\u003cbr data-start=\"946\" data-end=\"949\"\u003e✅ Direct replacement OEM fitment\u003cbr data-start=\"981\" data-end=\"984\"\u003e✅ Common fix for hot water flow faults ⚠️\u003cbr data-start=\"1025\" data-end=\"1028\"\u003e✅ Designed specifically for Vitodens combi range\u003c\/p\u003e\n\u003chr data-start=\"1080\" data-end=\"1083\"\u003e\n\u003ch3 data-section-id=\"1vwldxf\" data-start=\"1085\" data-end=\"1120\"\u003e\u003cspan role=\"text\"\u003e📋\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"1092\" data-end=\"1118\"\u003eCompatibility (MODELS)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1121\" data-end=\"1195\"\u003e✔️ Fits\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"1129\" data-end=\"1171\"\u003eViessmann Vitodens 100-W combi boilers\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003erequiring\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"1182\" data-end=\"1193\"\u003e7828749\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1197\" data-end=\"1234\"\u003e🔍 Commonly used in models such as:\u003c\/p\u003e\n\u003cul data-start=\"1235\" data-end=\"1511\"\u003e\n\u003cli data-section-id=\"2pxujb\" data-start=\"1235\" data-end=\"1276\"\u003e\n\u003cstrong data-start=\"1237\" data-end=\"1271\"\u003eVitodens 100-W WB1B 26kW Combi\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e🔥\u003c\/li\u003e\n\u003cli data-section-id=\"j1z4cw\" data-start=\"1277\" data-end=\"1318\"\u003e\n\u003cstrong data-start=\"1279\" data-end=\"1313\"\u003eVitodens 100-W WB1B 30kW Combi\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e🔥\u003c\/li\u003e\n\u003cli data-section-id=\"ijwz91\" data-start=\"1319\" data-end=\"1360\"\u003e\n\u003cstrong data-start=\"1321\" data-end=\"1355\"\u003eVitodens 100-W WB1B 35kW Combi\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e🔥\u003c\/li\u003e\n\u003cli data-section-id=\"1v5iuzf\" data-start=\"1361\" data-end=\"1401\"\u003e\u003cstrong data-start=\"1363\" data-end=\"1399\"\u003eVitodens 100 WB1C 26 \/ 30 \/ 35kW\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"1c7jplr\" data-start=\"1402\" data-end=\"1435\"\u003e\u003cstrong data-start=\"1404\" data-end=\"1433\"\u003eVitodens 100-W B1KC range\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"esz98c\" data-start=\"1436\" data-end=\"1511\"\u003e\n\u003cstrong data-start=\"1438\" data-end=\"1473\"\u003eVitodens 100-W BPJA 25kW \/ 29kW\u003c\/strong\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1513\" data-end=\"1531\"\u003e✔️ Suitable for:\u003c\/p\u003e\n\u003cul data-start=\"1532\" data-end=\"1625\"\u003e\n\u003cli data-section-id=\"16q7s7g\" data-start=\"1532\" data-end=\"1554\"\u003eCombi boilers 🔥💧\u003c\/li\u003e\n\u003cli data-section-id=\"141pb87\" data-start=\"1555\" data-end=\"1594\"\u003eDomestic central heating systems 🏠\u003c\/li\u003e\n\u003cli data-section-id=\"10yvuuw\" data-start=\"1595\" data-end=\"1625\"\u003eDHW flow detection systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1627\" data-end=\"1641\"\u003e✔️ Used for:\u003c\/p\u003e\n\u003cul data-start=\"1642\" data-end=\"1736\"\u003e\n\u003cli data-section-id=\"21rl84\" data-start=\"1642\" data-end=\"1675\"\u003eDomestic hot water activation\u003c\/li\u003e\n\u003cli data-section-id=\"m3mgfq\" data-start=\"1676\" data-end=\"1695\"\u003eFlow monitoring\u003c\/li\u003e\n\u003cli data-section-id=\"zfe9u3\" data-start=\"1696\" data-end=\"1736\"\u003eRepair of hot water demand faults ⚠️\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1738\" data-end=\"1761\"\u003e📌\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"1741\" data-end=\"1759\"\u003eFitment Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1762\" data-end=\"1982\"\u003e\n\u003cli data-section-id=\"oo97p\" data-start=\"1762\" data-end=\"1796\"\u003eMust match\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"1775\" data-end=\"1786\"\u003e7828749\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eexactly\u003c\/li\u003e\n\u003cli data-section-id=\"1dnjhk4\" data-start=\"1797\" data-end=\"1878\"\u003eAlso referred to as\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"1819\" data-end=\"1838\"\u003eFlow Sensor CPK\u003c\/strong\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1endlaq\" data-start=\"1879\" data-end=\"1940\"\u003eInstalled internally within the boiler hydraulic assembly\u003c\/li\u003e\n\u003cli data-section-id=\"1g9b5ii\" data-start=\"1941\" data-end=\"1982\"\u003eProfessional installation recommended\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1984\" data-end=\"2075\"\u003e💬 Send your\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"1997\" data-end=\"2029\"\u003eexact Viessmann serial\/model\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand I’ll confirm compatibility instantly 👍\u003c\/p\u003e\n\u003chr data-start=\"2077\" data-end=\"2080\"\u003e\n\u003ch3 data-section-id=\"1lxf55x\" data-start=\"2082\" data-end=\"2110\"\u003e\u003cspan role=\"text\"\u003e📦\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"2089\" data-end=\"2108\"\u003eWhat’s Included\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2111\" data-end=\"2153\"\u003e✔️ 1 ×\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"2118\" data-end=\"2151\"\u003eViessmann 7828749 Flow Sensor\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2155\" data-end=\"2196\"\u003e📷 Supplied as per part number reference.\u003c\/p\u003e","brand":"VIESSMANN","offers":[{"title":"Default Title","offer_id":57992159002998,"sku":null,"price":31.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0533\/0983\/3406\/files\/s-l1600-2026-06-01T122236.665.webp?v=1780312967","url":"https:\/\/star-boiler-spares.com\/en-ie\/products\/viessmann-7828749-flow-sensor-vitodens-100-w-wb1b-26kw-30kw-35kw-combi","provider":"Star boiler spares","version":"1.0","type":"link"}