{"product_id":"joule-cyclone-platinum-high-gain-300l-short-indirect-unvented-cylinder-tcimvh-0300nfc","title":"Joule Cyclone Platinum High Gain 300L Short Indirect Unvented Cylinder – TCIMVH-0300NFC","description":"\u003c!-- SEO Product Name: Joule Cyclone Platinum High Gain 300L Short Indirect Unvented Cylinder – TCIMVH-0300NFC --\u003e\n\u003cdiv style=\"font-family: Arial, sans-serif; color: #1a1a1a; max-width: 900px; line-height: 1.7;\"\u003e\n\u003c!-- Intro --\u003e\n\u003cp style=\"font-size: 15px;\"\u003eThe \u003cstrong\u003eJoule Cyclone Platinum TCIMVH-0300NFC\u003c\/strong\u003e is a 300-litre high gain indirect unvented hot water cylinder in the compact Short (600) format — 1600mm tall × 600mm diameter. It is purpose-built for \u003cstrong\u003eair source heat pump systems\u003c\/strong\u003e, featuring Joule's high-recovery smooth stainless tube primary coil rated at \u003cstrong\u003e110 kW\u003c\/strong\u003e — one of the highest coil ratings in its class, enabling rapid heat transfer from low-temperature heat pump circuits even at flow temperatures of 35–55°C.\u003c\/p\u003e\n\u003cp style=\"font-size: 15px;\"\u003eThe cylinder body is manufactured from \u003cstrong\u003ehigh-grade Duplex stainless steel\u003c\/strong\u003e — selected for its strength and resistance to both stress and crevice corrosion — with \u003cstrong\u003e50mm CFC-free polyurethane insulation\u003c\/strong\u003e achieving ErP Class C and a standing heat loss of just \u003cstrong\u003e17W\u003c\/strong\u003e. All Joule Cyclone Platinum cylinders are independently tested and certified by \u003cstrong\u003eKIWA\u003c\/strong\u003e to BS EN 12897:2006, confirming compliance with UK Building Regulations, Water Regulations, and ErP Legislation.\u003c\/p\u003e\n\u003c!-- Badge strip --\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0;\"\u003e\n\u003cspan style=\"background: #008377CF; color: #fff; padding: 7px 13px; border-radius: 20px; font-size: 12px; font-weight: bold;\"\u003eMPN: TCIMVH-0300NFC\u003c\/span\u003e \u003cspan style=\"background: #008377CF; color: #fff; padding: 7px 13px; border-radius: 20px; font-size: 12px; font-weight: bold;\"\u003e300L High Gain Indirect\u003c\/span\u003e \u003cspan style=\"background: #008377CF; color: #fff; padding: 7px 13px; border-radius: 20px; font-size: 12px; font-weight: bold;\"\u003eHeat Pump Ready\u003c\/span\u003e \u003cspan style=\"background: #008377CF; color: #fff; padding: 7px 13px; border-radius: 20px; font-size: 12px; font-weight: bold;\"\u003e110kW Primary Coil\u003c\/span\u003e \u003cspan style=\"background: #008377CF; color: #fff; padding: 7px 13px; border-radius: 20px; font-size: 12px; font-weight: bold;\"\u003eKIWA Certified\u003c\/span\u003e \u003cspan style=\"background: #008377CF; color: #fff; padding: 7px 13px; border-radius: 20px; font-size: 12px; font-weight: bold;\"\u003eErP Class C\u003c\/span\u003e \u003cspan style=\"background: #008377CF; color: #fff; padding: 7px 13px; border-radius: 20px; font-size: 12px; font-weight: bold;\"\u003eDuplex Stainless Steel\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c!-- HG vs Standard callout --\u003e\n\u003cdiv style=\"background: #f0faf9; border-left: 4px solid #008377CF; padding: 12px 16px; margin: 0 0 18px; font-size: 14px; border-radius: 0 4px 4px 0;\"\u003e\n\u003cstrong style=\"color: #008377cf;\"\u003eWhy High Gain for heat pumps?\u003c\/strong\u003e Standard indirect cylinders use corrugated coils rated at 20–27 kW — designed for high-temperature boiler circuits where fast heat transfer from a small coil area is possible. Heat pumps deliver water at 35–55°C at lower flow rates. A high-gain smooth tube coil with a much larger surface area (rated at 110 kW on this model) compensates for the lower temperature differential, recovering heat efficiently and keeping reheat times short — just \u003cstrong\u003e17 minutes\u003c\/strong\u003e on this cylinder.\u003c\/div\u003e\n\u003c!-- Short vs Standard callout --\u003e\n\u003cdiv style=\"background: #f0faf9; border-left: 4px solid #008377CF; padding: 12px 16px; margin: 0 0 24px; font-size: 14px; border-radius: 0 4px 4px 0;\"\u003e\n\u003cstrong style=\"color: #008377cf;\"\u003eShort (600) vs Standard (540) format:\u003c\/strong\u003e The Short format is 1600mm tall × 600mm diameter — wider and shorter than the Standard 540mm diameter models (which are typically 2040mm tall for 300L). The Short format is ideal where ceiling height is limited (e.g. airing cupboards, under-stairs installations, utility rooms) while the larger diameter maintains full 300L capacity. If height is not a constraint, the TCIMVH-0300LFC Tall (540) version is also available.\u003c\/div\u003e\n\u003c!-- Technical specifications --\u003e\n\u003ch2 style=\"color: #fff; background: #008377CF; padding: 10px 16px; border-radius: 4px; font-size: 16px; margin: 28px 0 16px;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; margin-bottom: 24px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #008377CF; color: #fff;\"\u003e\n\u003cth style=\"padding: 10px 12px; text-align: left; border: 1px solid #006b62;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"padding: 10px 12px; text-align: left; border: 1px solid #006b62;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eMPN\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eTCIMVH-0300NFC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eModel type\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eHigh Gain Indirect — Short (600) — Unvented\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eNominal capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e300 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eActual water volume\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e282 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eHeight (A)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e1600mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eDiameter (B)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e600mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eWeight — empty\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e74 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eWeight — full\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e372 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eMax mains water pressure\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e10 Bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eOperating pressure\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e7 Bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eT\u0026amp;P relief valve setting\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e90°C \/ 7 Bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003ePrimary coil rating\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e110 kW\u003c\/strong\u003e — smooth stainless tube high-gain coil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eReheat time (indirect)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e17 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eImmersion heater\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e1× 3kW Incoloy @ 230V — with integral thermostat (backup \/ boost)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eInsulation\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e50mm CFC-free polyurethane foam (ODP zero)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eStanding heat loss\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e17W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eAnnual energy usage\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e2.21 kWh\/annum (standing loss)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eErP energy rating\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eClass C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eLoad profile\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eBody material\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eDuplex stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eCoil \/ fittings material\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e316L grade stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eTest standard\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eBS EN 12897:2006\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eCertification\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eKIWA (ISO\/IEC 17065) — Building Regs, Water Regs \u0026amp; ErP compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eNumber of immersion ports\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eConnections (all compression)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e22mm compression — supplied with fittings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eJoule UK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!-- Connection positions --\u003e\n\u003ch2 style=\"color: #fff; background: #008377CF; padding: 10px 16px; border-radius: 4px; font-size: 16px; margin: 28px 0 16px;\"\u003eConnection Heights from Base\u003c\/h2\u003e\n\u003cp style=\"font-size: 13px; color: #555; margin-bottom: 12px;\"\u003eAll measurements in mm, taken from base of cylinder. All connections are at the \u003cstrong\u003efront\u003c\/strong\u003e of the cylinder and clearly labelled.\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; margin-bottom: 24px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #008377CF; color: #fff;\"\u003e\n\u003cth style=\"padding: 10px 12px; text-align: left; border: 1px solid #006b62;\"\u003eRef\u003c\/th\u003e\n\u003cth style=\"padding: 10px 12px; text-align: left; border: 1px solid #006b62;\"\u003eConnection\u003c\/th\u003e\n\u003cth style=\"padding: 10px 12px; text-align: left; border: 1px solid #006b62;\"\u003eHeight from base (mm)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eC\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eCold water inlet\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e218mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eD\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003ePrimary coil flow (from heat pump \/ boiler — hot)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e608mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eE\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003ePrimary coil return (to heat pump \/ boiler — cooled)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e586mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eF\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eAquastat pocket (bottom thermostat position)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e383mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eG\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eT\u0026amp;P relief valve\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e1333mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eI\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eImmersion heater (bottom) — 3kW Incoloy\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e673mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eK\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eSecondary return (hot water out \/ secondary circulation)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e1153mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!-- Supplied components --\u003e\n\u003ch2 style=\"color: #fff; background: #008377CF; padding: 10px 16px; border-radius: 4px; font-size: 16px; margin: 28px 0 16px;\"\u003eSupplied Components\u003c\/h2\u003e\n\u003cp style=\"font-size: 14px; margin-bottom: 24px;\"\u003eThe TCIMVH-0300NFC is supplied as a complete pre-fitted unvented kit, including: \u003cstrong\u003e3kW Incoloy immersion heater with integral thermostat\u003c\/strong\u003e, \u003cstrong\u003eexpansion vessel\u003c\/strong\u003e (sized for the cylinder), \u003cstrong\u003etemperature \u0026amp; pressure relief valve\u003c\/strong\u003e (90°C \/ 7 Bar), \u003cstrong\u003e3 Bar inlet control group\u003c\/strong\u003e, \u003cstrong\u003etwo-port motorised zone valve\u003c\/strong\u003e, \u003cstrong\u003etundish\u003c\/strong\u003e, and \u003cstrong\u003e22mm compression fittings\u003c\/strong\u003e for all connections. All branded quality components — no own-label replacements.\u003c\/p\u003e\n\u003c!-- Key features grid --\u003e\n\u003ch2 style=\"color: #fff; background: #008377CF; padding: 10px 16px; border-radius: 4px; font-size: 16px; margin: 28px 0 16px;\"\u003eKey Features\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 14px; margin-bottom: 24px;\"\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 14px 16px;\"\u003e\n\u003cp style=\"margin: 0 0 5px; font-weight: bold; color: #008377cf; font-size: 14px;\"\u003e110 kW smooth tube high-gain coil\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px;\"\u003eJoule's proprietary smooth stainless tube coil technology delivers the highest heat transfer rate of any coil type available. The 110 kW rating enables rapid heat absorption from low-temperature heat pump circuits (35–55°C), achieving a 17-minute reheat time on a 300-litre cylinder — critical for maintaining comfort without oversizing the heat pump.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 14px 16px;\"\u003e\n\u003cp style=\"margin: 0 0 5px; font-weight: bold; color: #008377cf; font-size: 14px;\"\u003eDuplex stainless steel body — lifetime durability\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px;\"\u003eThe cylinder shell is made from high-grade Duplex stainless steel, chosen for its superior resistance to both stress corrosion and crevice corrosion compared to standard 304 or 316 stainless. The 316L grade fittings and coils are produced on separate dedicated machinery — no cross-contamination risk from other metals. Joule's zero-dirt production floor policy prevents any foreign debris from entering the metal during manufacturing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 14px 16px;\"\u003e\n\u003cp style=\"margin: 0 0 5px; font-weight: bold; color: #008377cf; font-size: 14px;\"\u003eKIWA certified — full regulatory compliance\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px;\"\u003eAll Joule Cyclone Platinum cylinders are tested and certified by KIWA — one of the world's top 25 TIC organisations — to BS EN 12897:2006 under ISO\/IEC 17065 accreditation. KIWA independently verified compliance with all UK Building Regulations, Water Regulations, and ErP Legislation. KIWA regularly audit Joule's production facilities to ensure ongoing conformity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 14px 16px;\"\u003e\n\u003cp style=\"margin: 0 0 5px; font-weight: bold; color: #008377cf; font-size: 14px;\"\u003eShort (600) — space-efficient 1600mm height\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px;\"\u003eAt 1600mm tall, the Short format fits in standard-height airing cupboards and utility rooms where the 2040mm Standard\/Tall models would not. The 600mm diameter maintains full 300-litre capacity. A flat base provides additional stability and allows installation directly on a level floor without a plinth. All pipework connections are at the \u003cstrong\u003efront\u003c\/strong\u003e of the cylinder, clearly identified and accessible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 14px 16px;\"\u003e\n\u003cp style=\"margin: 0 0 5px; font-weight: bold; color: #008377cf; font-size: 14px;\"\u003e50mm PU foam insulation — 17W standing loss\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px;\"\u003eThe 50mm CFC-free polyurethane foam insulation jacket achieves a standing heat loss of just 17W — significantly lower than older or budget cylinders. Over a year this contributes only 2.21 kWh of standby energy consumption. The metallic grey outer casing contains no cheap plastic panels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 14px 16px;\"\u003e\n\u003cp style=\"margin: 0 0 5px; font-weight: bold; color: #008377cf; font-size: 14px;\"\u003eWorks with any air source heat pump\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px;\"\u003eThe TCIMVH-0300NFC is compatible with any air-to-water ASHP system regardless of brand — including Vaillant, Daikin, Mitsubishi, Samsung, LG, Grant, Panasonic, Worcester Bosch, and Joule's own heat pump range. It can also be used with system boilers, solar thermal systems, or a combination of heat pump + boiler in a hybrid system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- High Gain range context --\u003e\n\u003ch2 style=\"color: #fff; background: #008377CF; padding: 10px 16px; border-radius: 4px; font-size: 16px; margin: 28px 0 16px;\"\u003eHigh Gain Range — Available Variants\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 13px; margin-bottom: 24px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #008377CF; color: #fff;\"\u003e\n\u003cth style=\"padding: 9px 12px; text-align: left; border: 1px solid #006b62;\"\u003eMPN\u003c\/th\u003e\n\u003cth style=\"padding: 9px 12px; text-align: left; border: 1px solid #006b62;\"\u003eSize\u003c\/th\u003e\n\u003cth style=\"padding: 9px 12px; text-align: left; border: 1px solid #006b62;\"\u003eFormat\u003c\/th\u003e\n\u003cth style=\"padding: 9px 12px; text-align: left; border: 1px solid #006b62;\"\u003eH × D\u003c\/th\u003e\n\u003cth style=\"padding: 9px 12px; text-align: left; border: 1px solid #006b62;\"\u003eCoil kW\u003c\/th\u003e\n\u003cth style=\"padding: 9px 12px; text-align: left; border: 1px solid #006b62;\"\u003eReheat\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3; font-weight: bold; color: #008377;\"\u003eTCIMVH-0200NFC\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003e200L\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003eShort (600)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003e1150 × 600mm\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003e97 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003e11 min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3; font-weight: bold; color: #008377;\"\u003eTCIMVH-0250NFC\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003e250L\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003eShort (600)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003e1400 × 600mm\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003e110 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003e14 min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #008377CF; color: #fff;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #006b62; font-weight: bold;\"\u003eTCIMVH-0300NFC ✓\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #006b62;\"\u003e300L\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #006b62;\"\u003eShort (600)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #006b62;\"\u003e1600 × 600mm\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #006b62;\"\u003e110 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #006b62;\"\u003e17 min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3; font-weight: bold; color: #008377;\"\u003eTCIMVH-0300LFC\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003e300L\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003eTall (540)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003e2040 × 540mm\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003e110 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003e17 min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3; font-weight: bold; color: #008377;\"\u003eTCIMVH-0400LFC\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003e400L\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003eStandard (710)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003e1570 × 710mm\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003e138 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #c8e6e3;\"\u003e19 min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!-- Installation requirements --\u003e\n\u003ch2 style=\"color: #fff; background: #008377CF; padding: 10px 16px; border-radius: 4px; font-size: 16px; margin: 28px 0 16px;\"\u003eInstallation Requirements\u003c\/h2\u003e\n\u003cp style=\"font-size: 14px;\"\u003eThe TCIMVH-0300NFC must be installed by a \u003cstrong\u003eG3-qualified unvented hot water installer\u003c\/strong\u003e only. The installation, commissioning, and servicing must comply with the Joule installation manual, BS 7593, the Water Supply (Water Fittings) Regulations 1999, and Part G of the Building Regulations. A Benchmark commissioning log must be completed and left with the homeowner on installation.\u003c\/p\u003e\n\u003cp style=\"font-size: 14px;\"\u003eThe floor must be level and capable of bearing the full weight of \u003cstrong\u003e372 kg when full\u003c\/strong\u003e. At least two people must lift and position the cylinder to avoid injury. Install on a level base — the flat-base design provides inherent stability without a plinth. All connection pipework is 22mm compression. Ensure a thermostatic mixing valve (TMV) is installed to prevent scalding — domestic hot water may be stored above 60°C for Legionella control.\u003c\/p\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f59e0b; padding: 12px 16px; margin: 14px 0 24px; font-size: 14px; border-radius: 0 4px 4px 0;\"\u003e\n\u003cstrong style=\"color: #b45309;\"\u003eWater chemistry:\u003c\/strong\u003e The cylinder must be supplied with water conforming to Joule's water chemistry table in the installation manual. If Total Hardness or any other parameter exceeds the specified limits — regardless of whether the supply is from mains or another source — a \u003cstrong\u003eJoule Wellmaster cylinder\u003c\/strong\u003e (designed for hard or aggressive water) must be specified instead of the Cyclone Platinum.\u003c\/div\u003e\n\u003c!-- FAQ --\u003e\n\u003ch2 style=\"color: #fff; background: #008377CF; padding: 10px 16px; border-radius: 4px; font-size: 16px; margin: 28px 0 16px;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 14px; border-left: 3px solid #008377CF; padding-left: 14px;\"\u003e\n\u003cp style=\"font-weight: bold; color: #008377cf; margin-bottom: 4px;\"\u003eWill this cylinder work with my heat pump brand?\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14px;\"\u003eYes — the TCIMVH-0300NFC is compatible with any air-to-water heat pump regardless of manufacturer. The 110 kW smooth tube coil is designed to work efficiently with heat pump flow temperatures from 35°C upwards. The primary coil connections are standard 22mm compression fittings, compatible with all heat pump hydraulic circuits.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 14px; border-left: 3px solid #008377CF; padding-left: 14px;\"\u003e\n\u003cp style=\"font-weight: bold; color: #008377cf; margin-bottom: 4px;\"\u003eWhat is the difference between this (TCIMVH-0300NFC Short) and the TCIMVH-0300LFC (Tall)?\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14px;\"\u003eBoth cylinders hold 300L and share the same 110 kW coil and performance specifications. The Short (NFC) is 1600mm × 600mm diameter — wider and shorter, suited to installations with limited ceiling height. The Tall\/Standard (LFC) is 2040mm × 540mm — narrower and taller, suited to where floor space is tight but ceiling height is available. Choose based on the dimensions of your installation space.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 14px; border-left: 3px solid #008377CF; padding-left: 14px;\"\u003e\n\u003cp style=\"font-weight: bold; color: #008377cf; margin-bottom: 4px;\"\u003eCan this cylinder be used with a boiler as well as a heat pump?\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14px;\"\u003eYes — the single primary coil on the TCIMVH-0300NFC can be connected to any indirect heat source: an ASHP, a system boiler, a combination of both (hybrid system), or even a solid fuel back boiler. In a hybrid system, both the heat pump and boiler share the primary coil and are controlled via the zone valve to prioritise the heat pump and use the boiler as a supplementary heat source.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 14px; border-left: 3px solid #008377CF; padding-left: 14px;\"\u003e\n\u003cp style=\"font-weight: bold; color: #008377cf; margin-bottom: 4px;\"\u003eWhat size heat pump do I need to supply this cylinder?\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14px;\"\u003eThe coil is rated at 110 kW, but the actual heat pump capacity needed depends on the domestic hot water demand profile, the house heating load, and the operating temperatures. As a general guide for domestic use, a 5–16 kW ASHP is typical for a 300L cylinder with normal household demand. A heat pump designer or MCS-certified installer should confirm sizing based on the SAP or ASHP system design calculation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 14px; border-left: 3px solid #008377CF; padding-left: 14px;\"\u003e\n\u003cp style=\"font-weight: bold; color: #008377cf; margin-bottom: 4px;\"\u003eIs the 3kW immersion heater always needed?\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14px;\"\u003eThe immersion heater is provided for backup, boost, and anti-Legionella pasteurisation duty. During normal heat pump operation it does not need to run — the primary coil provides all the heating. It serves as an emergency backup if the heat pump is taken out of service, and can be used for a weekly 60°C+ pasteurisation cycle where required by the system design for Legionella compliance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Related products footer --\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; padding: 16px 20px; border-radius: 4px; margin-top: 32px; font-size: 14px; line-height: 1.9;\"\u003e\n\u003cstrong\u003eRelated Products:\u003c\/strong\u003e\u003cbr\u003eJoule TCIMVH-0250NFC 250L High Gain Short Indirect Cylinder | Joule TCIMVH-0300LFC 300L High Gain Tall Indirect Cylinder | Joule TCIMVH-0400LFC 400L High Gain Indirect Cylinder | Zilmet Hydro-Pro Potable Expansion Vessel | Intatec IntaKlean HP Magnetic Filter | Thermostatic Mixing Valve 22mm | 3 Bar Inlet Control Group\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Joule","offers":[{"title":"Default Title","offer_id":63899721957725,"sku":"TCIMVH-0300NFC","price":1795.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/JoulePlatinumDirectShort200LSmartCycloneCylinder.jpg?v=1763042907","url":"https:\/\/qualityheating.co.uk\/products\/joule-cyclone-platinum-high-gain-300l-short-indirect-unvented-cylinder-tcimvh-0300nfc","provider":"AIZO Quality Heating","version":"1.0","type":"link"}