{"product_id":"megaflo-main-300-litre-indirect-unvented-hot-water-cylinder-7912282","title":"Megaflo Main 300 Litre Indirect Unvented Hot Water Cylinder - 7912282","description":"\u003cp style=\"color: #374151; font-size: 16px; line-height: 1.6; margin: 0 0 10px;\"\u003eThe \u003cstrong\u003eMegaflo Main 300 Litre Indirect Unvented Hot Water Cylinder (7912282)\u003c\/strong\u003e is a high-capacity, \u003cstrong\u003eUK-manufactured stainless steel unvented cylinder\u003c\/strong\u003e designed to provide mains-pressure domestic hot water heated indirectly by a compatible gas, oil or system boiler. With a factory-fitted \u003cstrong\u003e3kW Incoloy 800 immersion heater\u003c\/strong\u003e for backup, this 300 litre cylinder is suited to large homes with three or more bathrooms, premium properties and installations with very high hot water demand.\u003c\/p\u003e\n\u003c!-- more --\u003e\n\u003cp style=\"color: #374151; font-size: 16px; line-height: 1.6; margin: 0 0 10px;\"\u003e\u003cem\u003eMegaflo Main is the new name for the Main unvented cylinder range. This model replaces the Main 300 Litre Indirect Unvented Hot Water Cylinder (5135328). Supplied as two boxes: cylinder plus fitting kit (90001992).\u003c\/em\u003e\u003c\/p\u003e\n\u003cp style=\"color: #374151; font-size: 16px; line-height: 1.6; margin: 0 0 10px;\"\u003eThe cylinder features a unique \u003cstrong\u003ecoil-in-coil heat exchanger\u003c\/strong\u003e with a 19kW rating for rapid heat recovery, while 50mm of factory-injected CFC\/HCFC-free polyurethane foam insulation helps minimise heat loss. It is \u003cstrong\u003eKIWA approved\u003c\/strong\u003e, Building Regulation G3 compliant and supplied with a 2-port motorised valve for primary over-temperature protection.\u003c\/p\u003e\n\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 18px;\"\u003e\n  \u003cspan style=\"background: #e0f2fe; color: #0369a1; padding: 6px 10px; border-radius: 999px; font-size: 13px; font-weight: 600;\"\u003e300L Capacity\u003c\/span\u003e\n  \u003cspan style=\"background: #fdefe0; color: #c2410c; padding: 6px 10px; border-radius: 999px; font-size: 13px; font-weight: 600;\"\u003e19kW Coil-in-Coil\u003c\/span\u003e\n  \u003cspan style=\"background: #eef2ff; color: #4338ca; padding: 6px 10px; border-radius: 999px; font-size: 13px; font-weight: 600;\"\u003e3kW Incoloy 800 Immersion\u003c\/span\u003e\n  \u003cspan style=\"background: #f3f4f6; color: #374151; padding: 6px 10px; border-radius: 999px; font-size: 13px; font-weight: 600;\"\u003e25-Year Inner Vessel Warranty\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 22px;\"\u003e\n  \u003cdiv style=\"flex: 1 1 180px; border-left: 4px solid #0284c7; background: #f4f8fc; padding: 12px 14px;\"\u003e\n    \u003cdiv style=\"font-size: 13px; color: #64748b;\"\u003eCapacity\u003c\/div\u003e\n    \u003cdiv style=\"font-size: 20px; font-weight: 700; color: #0369a1;\"\u003e300 Litres\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 180px; border-left: 4px solid #c2410c; background: #f4f8fc; padding: 12px 14px;\"\u003e\n    \u003cdiv style=\"font-size: 13px; color: #64748b;\"\u003eCoil Rating\u003c\/div\u003e\n    \u003cdiv style=\"font-size: 20px; font-weight: 700; color: #c2410c;\"\u003e19kW\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 180px; border-left: 4px solid #475569; background: #f4f8fc; padding: 12px 14px;\"\u003e\n    \u003cdiv style=\"font-size: 13px; color: #64748b;\"\u003eMaximum Flow\u003c\/div\u003e\n    \u003cdiv style=\"font-size: 20px; font-weight: 700; color: #475569;\"\u003e55 l\/min @ 6 bar\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 180px; border-left: 4px solid #0284c7; background: #f4f8fc; padding: 12px 14px;\"\u003e\n    \u003cdiv style=\"font-size: 13px; color: #64748b;\"\u003eERP Rating\u003c\/div\u003e\n    \u003cdiv style=\"font-size: 20px; font-weight: 700; color: #0369a1;\"\u003eD\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #0369a1; margin: 22px 0 10px;\"\u003eApplications \u0026amp; suitability\u003c\/h3\u003e\n\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 20px;\"\u003e\n  \u003cdiv style=\"flex: 1 1 220px; border: 1px solid #e5e7eb; border-radius: 8px; padding: 14px;\"\u003e\n    \u003cstrong style=\"color: #0369a1;\"\u003eLarge Homes\u003c\/strong\u003e\n    \u003cp style=\"color: #374151; font-size: 14px; line-height: 1.5; margin: 6px 0 0;\"\u003eThe 300 litre capacity is designed for larger domestic properties with substantial hot water requirements.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; border: 1px solid #e5e7eb; border-radius: 8px; padding: 14px;\"\u003e\n    \u003cstrong style=\"color: #0369a1;\"\u003eMultiple Bathrooms\u003c\/strong\u003e\n    \u003cp style=\"color: #374151; font-size: 14px; line-height: 1.5; margin: 6px 0 0;\"\u003eSuitable for homes with three or more bathrooms and higher simultaneous hot water demand.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; border: 1px solid #e5e7eb; border-radius: 8px; padding: 14px;\"\u003e\n    \u003cstrong style=\"color: #0369a1;\"\u003eIndirect Heating\u003c\/strong\u003e\n    \u003cp style=\"color: #374151; font-size: 14px; line-height: 1.5; margin: 6px 0 0;\"\u003eDesigned to be heated through the integrated coil-in-coil heat exchanger by a compatible boiler.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; border: 1px solid #e5e7eb; border-radius: 8px; padding: 14px;\"\u003e\n    \u003cstrong style=\"color: #0369a1;\"\u003ePremium Installations\u003c\/strong\u003e\n    \u003cp style=\"color: #374151; font-size: 14px; line-height: 1.5; margin: 6px 0 0;\"\u003eA high-capacity solution for premium properties and projects requiring substantial domestic hot water storage.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #0369a1; margin: 22px 0 10px;\"\u003eKey specifications\u003c\/h3\u003e\n\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; color: #374151;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1; font-weight: 600; background: #f4f8fc;\"\u003eProduct Code\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1;\"\u003e7912282\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1; font-weight: 600; background: #f4f8fc;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1;\"\u003eIndirect Unvented\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1; font-weight: 600; background: #f4f8fc;\"\u003eNominal Capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1;\"\u003e300 Litres\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1; font-weight: 600; background: #f4f8fc;\"\u003eHeight\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1;\"\u003e2065mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1; font-weight: 600; background: #f4f8fc;\"\u003eDiameter\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1;\"\u003eØ550mm (Cylinder) \/ 595mm (Base)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1; font-weight: 600; background: #f4f8fc;\"\u003eWeight Empty\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1;\"\u003e58kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1; font-weight: 600; background: #f4f8fc;\"\u003eCoil Rating\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1;\"\u003e19kW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1; font-weight: 600; background: #f4f8fc;\"\u003eCoil Heat-Up Time\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1;\"\u003e47 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1; font-weight: 600; background: #f4f8fc;\"\u003eRecovery Time\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1;\"\u003e35 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1; font-weight: 600; background: #f4f8fc;\"\u003eStanding Heat Loss\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1;\"\u003e2.52 kWh\/24h\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1; font-weight: 600; background: #f4f8fc;\"\u003eERP Energy Rating\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1;\"\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1; font-weight: 600; background: #f4f8fc;\"\u003eOperating Pressure\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1;\"\u003e3.5 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1; font-weight: 600; background: #f4f8fc;\"\u003eExpansion Vessel\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1;\"\u003e24 litre (Supplied)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1; font-weight: 600; background: #f4f8fc;\"\u003eConnections\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1;\"\u003e22mm Compression \/ ¾\" BSP\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1; font-weight: 600; background: #f4f8fc;\"\u003ePackaging\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cbd5e1;\"\u003eTwo boxes: cylinder plus fitting kit (90001992)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #0369a1; margin: 22px 0 10px;\"\u003eInstallation \u0026amp; compatibility\u003c\/h3\u003e\n\n\u003cdiv style=\"background: #f4f8fc; border-left: 4px solid #0284c7; padding: 15px 16px; margin-bottom: 20px;\"\u003e\n  \u003cp style=\"color: #374151; font-size: 15px; line-height: 1.6; margin: 0 0 8px;\"\u003e\u003cstrong\u003eBoiler compatibility:\u003c\/strong\u003e Designed for indirect heating via a compatible gas, oil or system boiler connected to the cylinder's coil-in-coil heat exchanger.\u003c\/p\u003e\n  \u003cp style=\"color: #374151; font-size: 15px; line-height: 1.6; margin: 0;\"\u003e\u003cstrong\u003eInstallation:\u003c\/strong\u003e The cylinder is supplied with a 24 litre expansion vessel, T\u0026amp;P relief valve, 2-port motorised valve, pressure reducing valve and factory-fitted controls. Installation should be carried out in accordance with applicable unvented cylinder requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #0369a1; margin: 22px 0 10px;\"\u003eDesign \u0026amp; performance benefits\u003c\/h3\u003e\n\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 20px;\"\u003e\n  \u003cdiv style=\"flex: 1 1 220px; border: 1px solid #e5e7eb; border-radius: 8px; padding: 14px;\"\u003e\n    \u003cstrong style=\"color: #0369a1;\"\u003e300L High-Capacity Storage\u003c\/strong\u003e\n    \u003cp style=\"color: #374151; font-size: 14px; line-height: 1.5; margin: 6px 0 0;\"\u003eProvides substantial stored hot water capacity for large properties and high-demand domestic installations.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; border: 1px solid #e5e7eb; border-radius: 8px; padding: 14px;\"\u003e\n    \u003cstrong style=\"color: #0369a1;\"\u003e19kW Coil-in-Coil Heat Exchanger\u003c\/strong\u003e\n    \u003cp style=\"color: #374151; font-size: 14px; line-height: 1.5; margin: 6px 0 0;\"\u003eThe stainless steel coil-in-coil heat exchanger provides a 19kW rating for indirect cylinder heating.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; border: 1px solid #e5e7eb; border-radius: 8px; padding: 14px;\"\u003e\n    \u003cstrong style=\"color: #0369a1;\"\u003e50mm Polyurethane Insulation\u003c\/strong\u003e\n    \u003cp style=\"color: #374151; font-size: 14px; line-height: 1.5; margin: 6px 0 0;\"\u003eFactory-injected 50mm CFC\/HCFC-free polyurethane foam insulation helps minimise heat loss.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; border: 1px solid #e5e7eb; border-radius: 8px; padding: 14px;\"\u003e\n    \u003cstrong style=\"color: #0369a1;\"\u003eBackup Immersion Heating\u003c\/strong\u003e\n    \u003cp style=\"color: #374151; font-size: 14px; line-height: 1.5; margin: 6px 0 0;\"\u003eA 3kW Incoloy 800 immersion heater provides backup electric heating when required.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #0369a1; margin: 22px 0 10px;\"\u003eAdditional installation features\u003c\/h3\u003e\n\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 20px;\"\u003e\n  \u003cdiv style=\"flex: 1 1 220px; background: #f4f8fc; padding: 14px; border-radius: 8px;\"\u003e\n    \u003cstrong style=\"color: #0369a1;\"\u003eSupplied Expansion Vessel\u003c\/strong\u003e\n    \u003cp style=\"color: #374151; font-size: 14px; line-height: 1.5; margin: 6px 0 0;\"\u003eA 24 litre expansion vessel is supplied as part of the cylinder installation package.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; background: #f4f8fc; padding: 14px; border-radius: 8px;\"\u003e\n    \u003cstrong style=\"color: #0369a1;\"\u003eMotorised Valve\u003c\/strong\u003e\n    \u003cp style=\"color: #374151; font-size: 14px; line-height: 1.5; margin: 6px 0 0;\"\u003eA supplied 2-port motorised valve provides primary over-temperature protection.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex: 1 1 220px; background: #f4f8fc; padding: 14px; border-radius: 8px;\"\u003e\n    \u003cstrong style=\"color: #0369a1;\"\u003eKIWA \u0026amp; G3 Compliant\u003c\/strong\u003e\n    \u003cp style=\"color: #374151; font-size: 14px; line-height: 1.5; margin: 6px 0 0;\"\u003eKIWA approved and Building Regulation G3 compliant, with CE marking as specified.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #0369a1; margin: 22px 0 10px;\"\u003eIdeal for\u003c\/h3\u003e\n\n\u003cp style=\"color: #374151; font-size: 16px; line-height: 1.6; margin: 0 0 10px;\"\u003eThe \u003cstrong\u003eMegaflo Main 300 Litre Indirect Unvented Hot Water Cylinder\u003c\/strong\u003e is ideal for \u003cstrong\u003elarge homes with three or more bathrooms\u003c\/strong\u003e, premium properties and domestic projects with very high hot water demand. Its 300 litre storage capacity, 19kW coil-in-coil heat exchanger, backup Incoloy 800 immersion heater and 3.5 bar operating pressure make it a high-capacity indirect hot water solution. It pairs with the \u003cstrong\u003eMain Eco Compact System\u003c\/strong\u003e or \u003cstrong\u003eMain Eco Elite System\u003c\/strong\u003e boilers for a complete domestic hot water installation.\u003c\/p\u003e","brand":"Megaflo","offers":[{"title":"Default Title","offer_id":53681589453136,"sku":"7912282","price":849.42,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0858\/5268\/4624\/files\/main-300-litre-indirect-unvented-hot-water-cylinder-5135328-7201594.jpg?v=1779438608","url":"https:\/\/getplumb.co.uk\/fr\/products\/megaflo-main-300-litre-indirect-unvented-hot-water-cylinder-7912282","provider":"Getplumb","version":"1.0","type":"link"}