{"product_id":"ehs-primus-14000c-flex-14kw-electric-combi-boiler-alc1-1pco-14f-range-rated-no-flue","title":"EHS Primus 14000C Flex 14kW Combi Boiler | ALC1-1PCO-14F","description":"\u003c!-- SEO Product Name: EHS Primus 14000C Flex 14kW Combi Boiler | ALC1-1PCO-14F --\u003e\n\n\u003cdiv style=\"font-size:16px; max-width:900px; font-family:Arial, Helvetica, sans-serif; color:#222; line-height:1.55;\"\u003e\n\u003cp style=\"margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eEHS Primus 14000C Flex\u003c\/strong\u003e is a \u003cstrong\u003e14kW single-phase electric combi boiler\u003c\/strong\u003e with fully \u003cstrong\u003erange-rated heating and hot water outputs\u003c\/strong\u003e — the installer sets both power levels at commissioning to match the exact heat loss and hot water demand of the property, rather than selecting a fixed-output model. It delivers \u003cstrong\u003econtinuous hot water up to 7 litres per minute\u003c\/strong\u003e and central heating through existing radiators or underfloor heating, with \u003cstrong\u003eno flue, no gas connection, and no annual Gas Safe inspection\u003c\/strong\u003e required. Part of the EHS FLEX range, it is designed as a direct replacement for a gas combi boiler in properties where a flue route is impractical or unavailable.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:10px; margin:20px 0;\"\u003e\n        \u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#f3fbfa; border:1px solid #008377CF; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n            \u003cdiv style=\"font-size:20px; font-weight:bold; color:#008377CF;\"\u003e14 kW\u003c\/div\u003e\n            \u003cdiv style=\"font-size:12.5px; color:#333; margin-top:4px;\"\u003eMax heating \u0026amp; DHW output\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#f3fbfa; border:1px solid #008377CF; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n            \u003cdiv style=\"font-size:20px; font-weight:bold; color:#008377CF;\"\u003e230V\u003c\/div\u003e\n            \u003cdiv style=\"font-size:12.5px; color:#333; margin-top:4px;\"\u003eSingle phase supply\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#f3fbfa; border:1px solid #008377CF; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n            \u003cdiv style=\"font-size:20px; font-weight:bold; color:#008377CF;\"\u003e6.5 L\/min\u003c\/div\u003e\n            \u003cdiv style=\"font-size:12.5px; color:#333; margin-top:4px;\"\u003eDHW flow (30°C rise)\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#f3fbfa; border:1px solid #008377CF; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n            \u003cdiv style=\"font-size:20px; font-weight:bold; color:#008377CF;\"\u003eNo flue\u003c\/div\u003e\n            \u003cdiv style=\"font-size:12.5px; color:#333; margin-top:4px;\"\u003eSite anywhere indoors\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#f3fbfa; border:1px solid #008377CF; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n            \u003cdiv style=\"font-size:20px; font-weight:bold; color:#008377CF;\"\u003e5 yrs\u003c\/div\u003e\n            \u003cdiv style=\"font-size:12.5px; color:#333; margin-top:4px;\"\u003eManufacturer warranty\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#f3fbfa; border:1px solid #008377CF; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n            \u003cdiv style=\"font-size:20px; font-weight:bold; color:#008377CF;\"\u003eIPX1\u003c\/div\u003e\n            \u003cdiv style=\"font-size:12.5px; color:#333; margin-top:4px;\"\u003eIngress protection\u003c\/div\u003e\n        \u003c\/div\u003e\n\u003c\/div\u003e\n\n    \u003cdiv style=\"background:#fdecec; border-left:4px solid #c0392b; border-radius:6px; padding:14px 16px; margin:18px 0;\"\u003e\n        \u003cdiv style=\"font-weight:bold; color:#c0392b; margin-bottom:6px;\"\u003e⚠ Qualified Installation \u0026amp; Electrical Supply Required\u003c\/div\u003e\n        \u003cdiv style=\"font-size:15px; color:#333;\"\u003eThis boiler must be installed by a \u003cstrong\u003equalified heating engineer and a Part P registered electrician\u003c\/strong\u003e, in accordance with the EHS installation manual, BS 7671 IEE Wiring Regulations, Building Regulations, and the Water Supply (Water Fittings) Regulations 1999. At full 14kW output it draws \u003cstrong\u003e61A\u003c\/strong\u003e and requires a \u003cstrong\u003e63A circuit breaker and 10mm² cable\u003c\/strong\u003e as a minimum. An \u003cstrong\u003eautomatic bypass valve\u003c\/strong\u003e must be fitted — its omission can cause F6 error codes, boiler shutdown, and will affect the manufacturer's warranty.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#fff8e6; border-left:4px solid #b8860b; border-radius:6px; padding:14px 16px; margin:18px 0;\"\u003e\n        \u003cdiv style=\"font-weight:bold; color:#8a6100; margin-bottom:6px;\"\u003e⚠ Suitable for Single-Shower Properties, Not Baths\u003c\/div\u003e\n        \u003cdiv style=\"font-size:15px; color:#333;\"\u003eEHS specify the 14kW combi as suitable for properties with a \u003cstrong\u003esingle shower\u003c\/strong\u003e — the maximum flow rate of approximately 6.5–7 L\/min is not sufficient to fill a bath in reasonable time. For properties with baths or multiple bathrooms, EHS recommend a \u003cstrong\u003esystem boiler paired with a hot water cylinder\u003c\/strong\u003e instead.\u003c\/div\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:14px; margin:20px 0;\"\u003e\n        \u003cdiv style=\"flex:1 1 260px; min-width:260px; border:1px solid #e0e0e0; border-radius:8px; padding:16px; background:#fff;\"\u003e\n            \u003cdiv style=\"font-weight:bold; color:#008377CF; margin-bottom:8px; font-size:15.5px;\"\u003e✔ Range-Rated Flex — One Boiler, Any Property\u003c\/div\u003e\n            \u003cdiv style=\"font-size:14.5px; color:#333;\"\u003eBoth \u003cstrong\u003eheating and hot water outputs are adjustable at installation\u003c\/strong\u003e, from 2kW up to the 14kW maximum, in six power steps. The installer matches output to the heat loss calculation rather than selecting a fixed model — EHS recommend not reducing DHW output below 12kW where a shower is present.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 260px; min-width:260px; border:1px solid #e0e0e0; border-radius:8px; padding:16px; background:#fff;\"\u003e\n            \u003cdiv style=\"font-weight:bold; color:#008377CF; margin-bottom:8px; font-size:15.5px;\"\u003e✔ No Flue — No Gas — No Annual Certificate\u003c\/div\u003e\n            \u003cdiv style=\"font-size:14.5px; color:#333;\"\u003eWith \u003cstrong\u003eno combustion, no flue, and zero risk of carbon monoxide emission\u003c\/strong\u003e, the boiler can be sited in any interior room — kitchen, hallway, or cupboard — without a flue route to an external wall, and requires no annual Gas Safe safety certificate.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 260px; min-width:260px; border:1px solid #e0e0e0; border-radius:8px; padding:16px; background:#fff;\"\u003e\n            \u003cdiv style=\"font-weight:bold; color:#008377CF; margin-bottom:8px; font-size:15.5px;\"\u003e✔ Continuous Hot Water at 6.5–7 L\/min\u003c\/div\u003e\n            \u003cdiv style=\"font-size:14.5px; color:#333;\"\u003eAt full 14kW output the boiler raises incoming mains temperature by \u003cstrong\u003e30°C at 6.5 litres per minute\u003c\/strong\u003e — sufficient for a standard shower. EHS specify restricting incoming flow to 5–6 L\/min to guarantee this temperature rise regardless of mains pressure.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 260px; min-width:260px; border:1px solid #e0e0e0; border-radius:8px; padding:16px; background:#fff;\"\u003e\n            \u003cdiv style=\"font-weight:bold; color:#008377CF; margin-bottom:8px; font-size:15.5px;\"\u003e✔ Touch-Screen Display with 24-Hour Timer\u003c\/div\u003e\n            \u003cdiv style=\"font-size:14.5px; color:#333;\"\u003eA \u003cstrong\u003ecolour touch-screen interface\u003c\/strong\u003e provides direct control of heating mode, hot water temperature, timer programming, frost protection and pump purge — all without needing an external controller for basic operation.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 260px; min-width:260px; border:1px solid #e0e0e0; border-radius:8px; padding:16px; background:#fff;\"\u003e\n            \u003cdiv style=\"font-weight:bold; color:#008377CF; margin-bottom:8px; font-size:15.5px;\"\u003e✔ Built-In Frost Protection — Two-Stage\u003c\/div\u003e\n            \u003cdiv style=\"font-size:14.5px; color:#333;\"\u003eA \u003cstrong\u003etwo-level frost protection system\u003c\/strong\u003e monitors internal temperature whenever the boiler is powered, activating the pump and then the heat exchanger as temperatures fall, to protect the system from freeze damage during cold spells.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 260px; min-width:260px; border:1px solid #e0e0e0; border-radius:8px; padding:16px; background:#fff;\"\u003e\n            \u003cdiv style=\"font-weight:bold; color:#008377CF; margin-bottom:8px; font-size:15.5px;\"\u003e✔ Solar PV \u0026amp; Off-Peak Tariff Compatible\u003c\/div\u003e\n            \u003cdiv style=\"font-size:14.5px; color:#333;\"\u003eThe range-rated output and built-in timer allow heating to be \u003cstrong\u003escheduled around cheap-rate tariffs\u003c\/strong\u003e or run at reduced output to absorb surplus solar PV generation, supporting lower running costs.\u003c\/div\u003e\n        \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"height:2px; background:#008377CF; margin:28px 0; border:none;\"\u003e\u003c\/div\u003e\n\n    \u003cdiv style=\"margin:20px 0;\"\u003e\n        \u003cdiv style=\"background:#008377CF; color:#fff; font-weight:bold; padding:10px 14px; border-radius:6px 6px 0 0; font-size:15px;\"\u003ePerformance\u003c\/div\u003e\n        \u003cdiv style=\"border:1px solid #e0e0e0; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n            \n        \u003cdiv style=\"display:flex; background:#f7fcfb; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eHeating Power\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003e14kW (range-rateable in 6 steps from 2.3kW)\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eHot Water Power\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003e14kW (range-rateable — not recommended below 12kW with a shower fitted)\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fcfb; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eFunction\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003eHeating and Hot Water (Combi)\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eHot Water Flow Rate (30°C rise)\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003e6.5 L\/min at full power; restrict incoming flow to 5–6 L\/min\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fcfb; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eHeating Flow Temperature Range\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003e30°C – 80°C (radiator mode); 30°C – 60°C (underfloor heating mode)\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eHot Water Temperature Range\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003e30°C – 60°C\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"margin:20px 0;\"\u003e\n        \u003cdiv style=\"background:#008377CF; color:#fff; font-weight:bold; padding:10px 14px; border-radius:6px 6px 0 0; font-size:15px;\"\u003eElectrical\u003c\/div\u003e\n        \u003cdiv style=\"border:1px solid #e0e0e0; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n            \n        \u003cdiv style=\"display:flex; background:#f7fcfb; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eVoltage\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003e230V AC single phase\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eCurrent at Rated Output (14kW)\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003e61A\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fcfb; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eMinimum Circuit Breaker (MCB\/RCB)\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003e63A\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eMinimum Cable Size\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003e10mm²\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fcfb; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eThermostat Connection\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003eZero-volt — must never be supplied with live power\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"margin:20px 0;\"\u003e\n        \u003cdiv style=\"background:#008377CF; color:#fff; font-weight:bold; padding:10px 14px; border-radius:6px 6px 0 0; font-size:15px;\"\u003ePlumbing \u0026amp; Physical\u003c\/div\u003e\n        \u003cdiv style=\"border:1px solid #e0e0e0; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n            \n        \u003cdiv style=\"display:flex; background:#f7fcfb; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003ePart No.\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003eALC1-1PCO-14F\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eWater Pressure Range\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003e1–3 bar (max 6 bar mains — fit pressure reducing valve if higher)\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fcfb; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eFlow \u0026amp; Return Connection\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003eG¾\" male thread\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eInlet \u0026amp; Outlet Connection\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003eG½\"\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fcfb; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eInternal Expansion Vessel\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003e5 litres\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eIP Rating\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003eIPX1 (indoor use only — not for bathrooms or shower enclosures)\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fcfb; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eNet Weight\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003e26 kg\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eGross Weight\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003e29 kg\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fcfb; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eDimensions\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003e585mm × 380mm × 235mm\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eColour\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003eWhite\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"margin:20px 0;\"\u003e\n        \u003cdiv style=\"background:#008377CF; color:#fff; font-weight:bold; padding:10px 14px; border-radius:6px 6px 0 0; font-size:15px;\"\u003eCompliance \u0026amp; Warranty\u003c\/div\u003e\n        \u003cdiv style=\"border:1px solid #e0e0e0; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n            \n        \u003cdiv style=\"display:flex; background:#f7fcfb; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eWiring Standard\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003eBS 7671 IEE Wiring Regulations\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eInstallation Standards\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003eBS EN 12828, BS EN 12831, BS EN 14336, BS 7593\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fcfb; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eManufacturer Warranty\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003e5 years (register within 30 days at ehs-heating.com)\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #eee;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; padding:9px 12px; font-weight:bold; color:#333; font-size:14.5px;\"\u003eExtended Warranty\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; padding:9px 12px; color:#333; font-size:14.5px;\"\u003e+2 years (7 total) when purchased with the EHS Installer Kit and registered\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"height:2px; background:#008377CF; margin:28px 0; border:none;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin:24px 0;\"\u003e\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #e0e0e0; border-radius:6px; overflow:hidden;\"\u003e\n        \u003csummary style=\"background:#008377CF; color:#fff; font-weight:bold; padding:12px 16px; cursor:pointer; list-style:none; font-size:15px;\"\u003eIs 14kW enough to heat my property?\u003c\/summary\u003e\n        \u003cdiv style=\"padding:14px 16px; font-size:14.5px; color:#333; background:#fff;\"\u003eThis depends on the heat loss of the property — size, insulation standard, and number of radiators. EHS recommend completing a \u003cstrong\u003eheat loss calculation to BS EN 12831\u003c\/strong\u003e before ordering. As a guide, a well-insulated one or two-bedroom flat up to approximately 70m² is typically suitable for a 14kW electric combi. Because the boiler is \u003cstrong\u003erange-rated\u003c\/strong\u003e, the installer can set a lower maximum output if the heat loss calculation indicates this is more appropriate.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #e0e0e0; border-radius:6px; overflow:hidden;\"\u003e\n        \u003csummary style=\"background:#008377CF; color:#fff; font-weight:bold; padding:12px 16px; cursor:pointer; list-style:none; font-size:15px;\"\u003eWhy does the hot water need a flow restrictor?\u003c\/summary\u003e\n        \u003cdiv style=\"padding:14px 16px; font-size:14.5px; color:#333; background:#fff;\"\u003eThe heat exchanger can only add a fixed amount of heat per litre of water passing through it. At 14kW and 6.5 L\/min the rise is around 30°C — comfortable for a shower. If mains pressure pushes flow above this without restriction, the same 14kW heats each litre by less, and the water may not reach a comfortable temperature. A \u003cstrong\u003e5–6 L\/min flow restrictor\u003c\/strong\u003e caps the flow at a rate the boiler can always satisfy.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #e0e0e0; border-radius:6px; overflow:hidden;\"\u003e\n        \u003csummary style=\"background:#008377CF; color:#fff; font-weight:bold; padding:12px 16px; cursor:pointer; list-style:none; font-size:15px;\"\u003eWhy is the automatic bypass valve mandatory?\u003c\/summary\u003e\n        \u003cdiv style=\"padding:14px 16px; font-size:14.5px; color:#333; background:#fff;\"\u003eAs thermostatic radiator valves (TRVs) close when rooms reach temperature, the heating circuit becomes increasingly restricted. Without a bypass, the pump forces water against a closing circuit, pressure rises, and flow drops. The boiler's paddle flow switch detects this and triggers an \u003cstrong\u003eF6 error code\u003c\/strong\u003e or shuts down to protect the heat exchanger. The automatic bypass valve prevents this by opening progressively as pressure rises.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #e0e0e0; border-radius:6px; overflow:hidden;\"\u003e\n        \u003csummary style=\"background:#008377CF; color:#fff; font-weight:bold; padding:12px 16px; cursor:pointer; list-style:none; font-size:15px;\"\u003eCan this boiler be used with underfloor heating?\u003c\/summary\u003e\n        \u003cdiv style=\"padding:14px 16px; font-size:14.5px; color:#333; background:#fff;\"\u003eYes. Underfloor heating mode is selected via the engineer's control panel and limits the flow temperature to \u003cstrong\u003e30°C – 60°C\u003c\/strong\u003e, appropriate for UFH systems, as opposed to the 30°C – 80°C range available in radiator mode.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #e0e0e0; border-radius:6px; overflow:hidden;\"\u003e\n        \u003csummary style=\"background:#008377CF; color:#fff; font-weight:bold; padding:12px 16px; cursor:pointer; list-style:none; font-size:15px;\"\u003eDoes this boiler require an annual service?\u003c\/summary\u003e\n        \u003cdiv style=\"padding:14px 16px; font-size:14.5px; color:#333; background:#fff;\"\u003eYes — a yearly service by a suitably qualified engineer is a condition of the EHS warranty. The magnetic filter should be checked at every service, and a record of the service must be kept by the owner to remain covered under the warranty terms.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"margin-bottom:10px; border:1px solid #e0e0e0; border-radius:6px; overflow:hidden;\"\u003e\n        \u003csummary style=\"background:#008377CF; color:#fff; font-weight:bold; padding:12px 16px; cursor:pointer; list-style:none; font-size:15px;\"\u003eWhat is included versus what needs to be bought separately?\u003c\/summary\u003e\n        \u003cdiv style=\"padding:14px 16px; font-size:14.5px; color:#333; background:#fff;\"\u003eThis listing is for the \u003cstrong\u003eboiler unit only\u003c\/strong\u003e. Mandatory components for a compliant installation — automatic bypass valve, magnetic filter, WRAS filling loop, isolation valves, DHW flow restrictor, and a Boiler Plus compliant thermostat — are supplied together in the \u003cstrong\u003eEHS Installer Kit (EHS-COMBIKIT251F)\u003c\/strong\u003e, which also extends the manufacturer warranty to 7 years when registered.\u003c\/div\u003e\n    \u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"EHS","offers":[{"title":"Default Title","offer_id":65991753433437,"sku":"ALC1-1PCO-14F","price":1395.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/EHSPrimusElectricSystemBoiler.webp?v=1767108933","url":"https:\/\/qualityheating.co.uk\/products\/ehs-primus-14000c-flex-14kw-electric-combi-boiler-alc1-1pco-14f-range-rated-no-flue","provider":"AIZO Quality Heating","version":"1.0","type":"link"}