{"product_id":"jab-tsc-150l-direct-e7-man-fill-thermal-store-cylinder","title":"JAB TSC 150L Direct E7 Man-Fill Thermal Store Cylinder","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eJAB TSC 150L Direct E7 Man-Fill\u003c\/strong\u003e is a \u003cstrong\u003edirect electric open-vented thermal store\u003c\/strong\u003e designed to deliver \u003cstrong\u003emains-pressure hot water using Economy 7 or off-peak electricity\u003c\/strong\u003e, specifically engineered for \u003cstrong\u003enew-build apartments\u003c\/strong\u003e and other buildings where routing an unvented cylinder discharge pipe is impractical or prohibited. As a \u003cstrong\u003ethermal store\u003c\/strong\u003e, the primary water vessel operates at atmospheric pressure — eliminating the need for a temperature and pressure relief valve, discharge pipework, or Part G G3 annual maintenance. The 150-litre store charges overnight during cheap-rate hours, with mains-pressure hot water delivered via an \u003cstrong\u003einternal heat exchanger coil\u003c\/strong\u003e. The \u003cstrong\u003eMan-Fill configuration\u003c\/strong\u003e means the store is filled via a dedicated fill point, keeping the primary circuit separate from the domestic cold mains. \u003cstrong\u003eHWA specification compliant\u003c\/strong\u003e and \u003cstrong\u003ePart L1A approved\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;margin:20px 0;\"\u003e\n  \u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;\"\u003e150 L\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eStore volume\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;\"\u003eE7\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eOff-peak electric\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;\"\u003eNo G3\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eNo annual maintenance\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;\"\u003eNo T\u0026amp;P\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eNo discharge pipe needed\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;\"\u003eHWA\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eSpec compliant\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377CF;padding:14px 16px;border-radius:6px;margin:16px 0;\"\u003e\n  \u003cstrong style=\"color:#005c54;\"\u003eApartment-compliant solution:\u003c\/strong\u003e Building Regulations Part G prohibits connecting a discharge pipe from an unvented cylinder into a soil stack. The JAB TSC thermal store operates at atmospheric pressure and \u003cstrong\u003erequires no discharge pipe at all\u003c\/strong\u003e — making it the correct and compliant solution for new-build apartment installations.\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#fffbea;border-left:4px solid #e6a817;padding:14px 16px;border-radius:6px;margin:16px 0;\"\u003e\n  \u003cstrong style=\"color:#b07d00;\"\u003eElectrical connection:\u003c\/strong\u003e The immersion heater circuit must be wired by a \u003cstrong\u003ePart P competent electrician\u003c\/strong\u003e. The E7 immersion requires a \u003cstrong\u003ededicated Economy 7 supply\u003c\/strong\u003e with appropriate time-switching to the off-peak rate — confirm with the property's electrical supply arrangements before ordering.\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:12px 18px;border-radius:6px;margin:28px 0 16px;font-size:17px;font-weight:700;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-bottom:24px;\"\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eOpen Vented Thermal Store — No G3 Discharge Pipe Required\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe JAB TSC operates as an \u003cstrong\u003eopen vented thermal store at atmospheric pressure\u003c\/strong\u003e. Unlike unvented cylinders, it does \u003cstrong\u003enot require a temperature and pressure relief valve or a discharge pipe\u003c\/strong\u003e. This directly solves a common installation problem in apartment buildings where Building Regulations Part G prohibits routing a discharge pipe into a soil stack — making the JAB TSC the compliant solution where an unvented cylinder cannot legally be installed.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eMains-Pressure Hot Water via Internal Coil\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe mains cold water supply passes through an \u003cstrong\u003einternal heat exchanger coil\u003c\/strong\u003e inside the primary store. The store water is heated by the immersion heater and transfers heat across the coil to the incoming cold, delivering \u003cstrong\u003efast-flowing mains-pressure hot water\u003c\/strong\u003e to taps and showers — with no pump required and no pressure losses typical of gravity-fed systems.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eEconomy 7 \/ Off-Peak Electric Optimised\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe JAB TSC is \u003cstrong\u003especifically designed for Economy 7 and off-peak electricity tariffs\u003c\/strong\u003e. The large store volume (150 L, 180 L or 210 L) is heated overnight during cheap-rate hours and holds sufficient hot energy for an entire day's domestic use. This makes it the natural choice for \u003cstrong\u003enew-build apartments without a gas connection\u003c\/strong\u003e where electricity tariff optimisation reduces running costs.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eScale-Free Primary Water — No Annual Maintenance\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe immersion elements are \u003cstrong\u003epermanently immersed in the same primary (store) water\u003c\/strong\u003e, which is never renewed. Since this water is not replaced, \u003cstrong\u003eno scaling of the elements occurs\u003c\/strong\u003e — even in hard water areas. JAB thermal stores therefore \u003cstrong\u003edo not require the annual maintenance\u003c\/strong\u003e that unvented cylinders demand under Building Regulations, reducing whole-life running costs.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eManual Fill (Man-Fill) Configuration\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe Man-Fill (manual fill) configuration means the primary store is \u003cstrong\u003efilled manually via a fill point\u003c\/strong\u003e rather than being permanently connected to the mains cold supply for the store. This simplifies the installation pipework and is the preferred configuration for new-build apartments where the store circuit is kept isolated from the domestic mains. The mains connection is only made to the heat exchanger coil serving the hot water outlets.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eHWA Compliant — Part L1A Approved\u003c\/div\u003e\n    \u003cp style=\"margin:0;font-size:15px;\"\u003eThe JAB TSC range \u003cstrong\u003efully complies with the HWA (Hot Water Association) specification for thermal stores\u003c\/strong\u003e and meets \u003cstrong\u003ePart L1A Building Regulations\u003c\/strong\u003e for both new build and refurbishment. JAB's innovative design ensures installation and ongoing maintenance are straightforward — the installer-friendly layout reduces commissioning time on site.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:12px 18px;border-radius:6px;margin:28px 0 16px;font-size:17px;font-weight:700;\"\u003eTechnical Specifications — JAB TSC 150L Direct E7 Man-Fill\u003c\/div\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;margin-bottom:24px;\"\u003e\n  \u003cthead\u003e\u003ctr style=\"background:#005c54;color:#fff;\"\u003e\n\u003cth style=\"padding:10px 12px;text-align:left;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"padding:10px 12px;text-align:left;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eStore volume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e150 L\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eHeating type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eDirect electric — Economy 7 \/ off-peak\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eFill configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eManual fill (Man-Fill)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eStore operating pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eAtmospheric (open vented)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eHot water pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eMains pressure (via internal heat exchanger coil)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eT\u0026amp;P relief valve required\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eDischarge pipe required\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eAnnual G3 maintenance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eNot required\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eRegulatory compliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eHWA Thermal Store Specification; Part L1A (new build and refurbishment)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eScale risk on elements\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eMinimal — primary water not renewed\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e\u003cstrong\u003eInstaller qualification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eCompetent plumber + Part P electrician for wiring\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:12px 18px;border-radius:6px;margin:28px 0 16px;font-size:17px;font-weight:700;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;border-radius:5px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat is the difference between a thermal store and an unvented cylinder?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eAn \u003cstrong\u003eunvented cylinder\u003c\/strong\u003e stores domestic hot water under mains pressure — it requires a T\u0026amp;P relief valve and a discharge pipe routed to a safe termination point. A \u003cstrong\u003ethermal store\u003c\/strong\u003e (like the JAB TSC) stores heated \u003cstrong\u003eprimary water at atmospheric pressure\u003c\/strong\u003e in an open-vented configuration. The mains cold water passes through a heat exchanger coil and picks up heat — it never enters the store. This means \u003cstrong\u003eno T\u0026amp;P valve and no discharge pipe are required\u003c\/strong\u003e, which is critical in apartment buildings where discharge pipe routing is prohibited by Part G.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;border-radius:5px;cursor:pointer;font-weight:600;list-style:none;\"\u003eDoes the JAB TSC need a qualified installer?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eAs an \u003cstrong\u003eopen-vented thermal store\u003c\/strong\u003e, the JAB TSC does not fall under the Part G G3 unvented regulations — it does not need a G3-qualified installer. However, installation must still be carried out by a \u003cstrong\u003ecompetent plumber\u003c\/strong\u003e in accordance with the installation manual and Building Regulations Part L1A. Electrical connections to the immersion heaters must be made by a \u003cstrong\u003ePart P competent electrician\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;border-radius:5px;cursor:pointer;font-weight:600;list-style:none;\"\u003eDoes the JAB thermal store need annual servicing like an unvented cylinder?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eNo — \u003cstrong\u003eJAB thermal stores do not require the annual maintenance\u003c\/strong\u003e prescribed for unvented cylinders under Building Regulations. The primary store water is never replaced, so no scale builds up on the immersion elements. There is no T\u0026amp;P valve or expansion relief valve to test annually. Periodic inspection of the heat exchanger connections and blend valve is advisable, but this is not the same annual regulatory requirement that applies to G3 unvented systems.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;border-radius:5px;cursor:pointer;font-weight:600;list-style:none;\"\u003eCan the JAB TSC be used in a hard water area?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eYes — the JAB thermal store has a natural advantage in hard water areas. Because the \u003cstrong\u003eprimary store water is never renewed\u003c\/strong\u003e, it can only deposit scale once when first heated. Subsequent heating cycles use the same softened (de-gassed) water, so the immersion elements \u003cstrong\u003edo not accumulate scale over time\u003c\/strong\u003e. Limescale may form in the heat exchanger coil over time if mains water is very hard, but this occurs far more slowly than in a direct cylinder.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-radius:6px;margin-bottom:10px;\"\u003e\n  \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;border-radius:5px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat tariff should the JAB TSC be used with?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;background:#f9fefe;\"\u003eThe JAB TSC is optimised for \u003cstrong\u003eEconomy 7, Economy 10, or any time-of-use tariff\u003c\/strong\u003e with a defined cheap-rate overnight window. The large store volume is heated during cheap-rate hours and retains sufficient stored heat for the following day's use without requiring daytime top-up in most households. Time switches or smart immersion controllers can be used to control which hours the immersion heater operates.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"JAB","offers":[{"title":"Default Title","offer_id":64644856316253,"sku":"TSC150","price":1495.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/JABTSCDirectE7Man-FillThermalStoreCylinder.webp?v=1778257522","url":"https:\/\/qualityheating.co.uk\/products\/jab-tsc-150l-direct-e7-man-fill-thermal-store-cylinder","provider":"AIZO Quality Heating","version":"1.0","type":"link"}