{"product_id":"ariston-next-evo-x-16-natural-gas-instantaneous-water-heater-3632533-16-l-min-room-sealed-multipoint-erp-a-27kw","title":"Ariston Next Evo X 16 Natural Gas Instantaneous Water Heater 3632533 — 16 L\/min Room Sealed Multipoint ErP A 27kW","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eAriston Next Evo X 16 Natural Gas (MPN 3632533)\u003c\/strong\u003e is a \u003cstrong\u003eroom-sealed gas instantaneous water heater\u003c\/strong\u003e delivering \u003cstrong\u003e16 litres per minute\u003c\/strong\u003e of continuous hot water from a natural gas (G20) mains supply. With a \u003cstrong\u003emaximum heat output of 27.4kW\u003c\/strong\u003e and the highest ErP water heating load profile (XL), it is designed for \u003cstrong\u003elarger domestic properties and light commercial applications\u003c\/strong\u003e with high simultaneous hot water demand — hotels, offices, care facilities, and multi-bathroom homes. Compact at just \u003cstrong\u003e187mm deep\u003c\/strong\u003e, it installs in cupboards and utility rooms close to an external wall. Features \u003cstrong\u003eoxygen-free copper heat exchanger, lean-rich low NOx burner, ECO mode, built-in temperature stabilisation, LED touch display, post-ventilation, and flame ionisation ignition\u003c\/strong\u003e. \u003cstrong\u003eErP water heating energy efficiency Class A (η\u003csub\u003eWH\u003c\/sub\u003e 80.5%)\u003c\/strong\u003e. Minimum inlet pressure \u003cstrong\u003e0.2 bar\u003c\/strong\u003e. \u003cstrong\u003e2-year warranty\u003c\/strong\u003e. Flue kit sold separately — see MPN 3319648.\n  \u003c\/p\u003e\n  \u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Gas Safe Registered Installation Required\u003c\/strong\u003e — Must be installed by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e in accordance with the manufacturer's installation manual, Gas Safety (Installation and Use) Regulations 1998, and current British Standards. The appliance requires a \u003cstrong\u003e230V \/ 50Hz mains electrical supply\u003c\/strong\u003e for ignition — a fused spur must be provided. A \u003cstrong\u003e60\/100mm coaxial flue kit is required\u003c\/strong\u003e and must be purchased separately if not already available (see MPN 3319648 below).\n  \u003c\/div\u003e\n  \u003cdiv style=\"border-left:4px solid #008377CF;background:#e6f4f3;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eℹ Natural Gas Model — ErP XL Load Profile\u003c\/strong\u003e\u003cbr\u003e\n    This unit is factory-set for \u003cstrong\u003enatural gas (G20)\u003c\/strong\u003e and achieves the highest ErP declared load profile \u003cstrong\u003eXL\u003c\/strong\u003e, indicating suitability for very high demand applications with daily fuel consumption of 24.8 kWh. For LPG (off-grid), order the \u003cstrong\u003eNext Evo X 11 LPG (MPN 3632535)\u003c\/strong\u003e. An Ariston-approved gas conversion kit is available if conversion between gas types is later required — Gas Safe registered installation only.\n  \u003c\/div\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e16 L\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eNominal flow rate\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e27.4 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eMax heat output\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e0.2 bar\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eMin inlet pressure\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e187 mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eDepth only\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003eErP A \/ XL\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eEnergy rated\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Oxygen-Free Copper Heat Exchanger\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003eoxygen-free copper heat exchanger\u003c\/strong\u003e delivers heat from the burner to the water more efficiently than standard copper, with superior resistance to corrosion and scaling over time. Oxygen-free copper contains a minimum of 99.99% copper with virtually no dissolved oxygen — eliminating the micro-porosity that causes conventional copper to oxidise internally over years of hot water contact. The result is a heat exchanger with a longer operating life and more consistent thermal performance across the product's service life.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Low NOx Lean-Rich Burner — ErP Class A\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003elean-rich staged combustion burner\u003c\/strong\u003e reduces nitrogen oxide (NOx) emissions to 45–47 mg\/kWh — significantly below the ErP threshold for Class A rating. In a lean-rich burner the primary zone operates with excess air (lean) and the secondary zone with rich mixture — this staged approach lowers peak flame temperatures, which are the primary driver of thermal NOx formation. \u003cstrong\u003eWater heating energy efficiency η\u003csub\u003eWH\u003c\/sub\u003e\u003c\/strong\u003e is rated at Class A across both models, meeting the ErP Regulation 814\/2013 requirements for instantaneous gas water heaters.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ ECO Mode — Built-In Temperature Stabilisation\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003e\n\u003cstrong\u003eECO mode\u003c\/strong\u003e limits the output temperature to a 35–45°C band — ideal for summer use when incoming cold water is warmer and less heat input is needed, reducing gas consumption without the burner over-firing and cycling. The \u003cstrong\u003ebuilt-in temperature stabilisation\u003c\/strong\u003e system compensates for fluctuations in mains water pressure and incoming cold water temperature, maintaining a consistent output temperature regardless of draw-off rate. This prevents the \"cold sandwich\" effect common in basic instantaneous heaters where temperature drops when flow rates change.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Post-Ventilation \u0026amp; Overheat Sensor — Electronic Ignition\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003epost-ventilation system\u003c\/strong\u003e continues the fan for a period after burner shut-off — purging residual combustion gases from the heat exchanger and flue before the appliance returns to standby, reducing flue gas condensate formation and improving heat exchanger longevity. An \u003cstrong\u003eoverheat sensor\u003c\/strong\u003e shuts the appliance down safely if water temperature exceeds safe limits. The \u003cstrong\u003eelectronic ignition with flame ionisation\u003c\/strong\u003e replaces the standing pilot light — ignition only fires when hot water is drawn, eliminating continuous pilot gas consumption and reducing the risk of ignition failure.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ 16 L\/min — High Demand Multi-Point\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eAt \u003cstrong\u003e16 L\/min nominal flow\u003c\/strong\u003e, the Next Evo X 16 can supply \u003cstrong\u003emultiple simultaneous draw-off points\u003c\/strong\u003e — a shower and basin running concurrently, or back-to-back use by multiple occupants without the temperature dipping between uses. With a maximum heat output of \u003cstrong\u003e27.4kW\u003c\/strong\u003e and ErP load profile XL, it is the highest-capacity model in the Next Evo X range and is suited to properties that would otherwise require a large unvented cylinder. Despite this output, it remains compact at 187mm deep with an identical face size to the 11L model.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications — Next Evo X 16 Natural Gas (3632533)\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eMPN\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e3632533\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eGas Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eNatural gas — G20\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eGas Category\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eII2H3P — I3B\/P\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eAppliance Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eRoom-sealed instantaneous (Type C13\/C33)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eNominal DHW Flow Rate\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e16 L\/min\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMinimum DHW Flow Rate\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e2.5 L\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax. Nominal Heat Input\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e30.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax. Nominal Heat Output\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e27.4 kW\u003c\/strong\u003e (G20)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMin. Nominal Heat Output\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e8.7 kW (G20)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDHW Temp Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e35°C – 65°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eWater Pressure — Min \/ Max\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e0.2 bar\u003c\/strong\u003e \/ 10 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eErP Water Heating Class\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003eA\u003c\/strong\u003e — η\u003csub\u003eWH\u003c\/sub\u003e 80.5% — Load profile XL\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eNOx Emissions\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e47 mg\/kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eNoise Level\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e63 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e230V \/ 50Hz — 44W consumption — internal fuse 3.15A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eIP Rating\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eIPX4D\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFlue Connection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e60\/100mm coaxial — flue kit sold separately (3319648)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e570 × 345 × 187 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDry Weight\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e15 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\n\u003cstrong\u003e2 years\u003c\/strong\u003e manufacturer's warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;margin-bottom:8px;\"\u003e\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eWhat does 16 litres per minute mean in practice?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe 16 L\/min nominal flow rate is the volume of hot water the heater can deliver per minute at the rated temperature rise. For a typical temperature rise from 12°C cold to 40°C output (a comfortable shower temperature), 16 L\/min is sufficient for simultaneous use at two points — for example, a shower and a basin, or two bathrooms in sequence — making it well-suited to larger properties with higher simultaneous demand. Minimum activation flow is just 2.5 L\/min, so even low-flow taps and eco shower heads will trigger the burner without issue. The heater will deliver hot water at any flow rate between 2.5 L\/min and 16 L\/min continuously.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eCan this heater be converted to LPG?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThis unit is factory-set for \u003cstrong\u003enatural gas (G20)\u003c\/strong\u003e. Ariston do offer conversion kits for the Next Evo X range allowing conversion between natural gas and LPG, but \u003cstrong\u003egas conversion must only be carried out by a Gas Safe registered engineer\u003c\/strong\u003e and must use the correct Ariston-approved conversion kit. The appliance gas category is II2H3P\/I3B\/P, meaning it is certified for use on both gas families — but the burner injectors, gas valve calibration, and pressure settings must all be correctly adjusted for the target gas. Using an incorrect gas type or unconverted injectors will result in incorrect combustion, CO risk, and will void the warranty. Contact Ariston or your distributor for the correct conversion kit code.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eDo I need a flue kit, and which one?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Next Evo X is a \u003cstrong\u003eroom-sealed (Type C) appliance\u003c\/strong\u003e that draws combustion air from and discharges flue gases to the outside through a \u003cstrong\u003e60\/100mm coaxial flue system\u003c\/strong\u003e. A flue kit is \u003cstrong\u003enot included\u003c\/strong\u003e with the water heater and must be purchased separately. For a standard installation through a wall to the outside, the \u003cstrong\u003eAriston Horizontal Flue Kit 60\/100 (SE) MPN 3319648\u003c\/strong\u003e is the correct flue kit — it includes all components needed for a normal through-wall horizontal termination up to 800mm. For vertical terminations, or for installations requiring extensions, elbows, or bends, additional Ariston flue accessories are available. All flue components used must be Ariston-approved and compatible with the 60\/100mm SE coaxial system.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eWhat is the minimum water pressure required?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe Next Evo X has an exceptionally low \u003cstrong\u003eminimum inlet water pressure of just 0.2 bar\u003c\/strong\u003e — far lower than the 0.5–1.0 bar minimum required by many competing instantaneous heaters. This makes it particularly suitable for \u003cstrong\u003eproperties with poor mains pressure, gravity-fed systems, and loft or rural installations\u003c\/strong\u003e where mains pressure can be marginal. Maximum working pressure is 10 bar. If the incoming pressure is above 3 bar, a pressure-reducing valve should be fitted upstream to protect the appliance and any downstream fittings.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eIs the mains electricity connection mandatory?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the Next Evo X requires a \u003cstrong\u003e230V \/ 50Hz mains electrical supply\u003c\/strong\u003e for the electronic ignition system, the modulating gas valve, the fan, the LED display, and the flame ionisation detection circuit. The appliance draws \u003cstrong\u003e44W\u003c\/strong\u003e during operation. A fused spur (typically 3A fused) must be provided by a Part P registered electrician adjacent to the installation position. The appliance \u003cstrong\u003ecannot operate without mains power\u003c\/strong\u003e — it is not suitable for off-grid locations without a generator or battery inverter supply. The internal fuse is rated 3.15A.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eWhat warranty does the Next Evo X carry?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe Ariston Next Evo X carries a \u003cstrong\u003e2-year manufacturer's warranty\u003c\/strong\u003e as standard. Warranty claims require the installation to have been carried out by a Gas Safe registered engineer and in accordance with the Ariston installation manual. The appliance must be installed, commissioned, and maintained in accordance with the manufacturer's instructions, Gas Safety (Installation and Use) Regulations, and applicable British Standards. Ariston UK can be contacted via their website for warranty registration and support.\u003c\/div\u003e\n    \u003c\/details\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Ariston","offers":[{"title":"Default Title","offer_id":64195812098397,"sku":"3632533","price":470.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/AristonNextEvoXLPGInstantWaterHeater.jpg?v=1776250744","url":"https:\/\/qualityheating.co.uk\/products\/ariston-next-evo-x-16-natural-gas-instantaneous-water-heater-3632533-16-l-min-room-sealed-multipoint-erp-a-27kw","provider":"AIZO Quality Heating","version":"1.0","type":"link"}