{"product_id":"jab-duc-ie-indirect-unvented-cylinders-120l-300l","title":"JAB DUC IE Indirect Unvented Cylinders (120L-300L)","description":"\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial, Helvetica, sans-serif; color:#333333;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.6; color:#333333; margin:0 0 24px 0;\"\u003eThe \u003cstrong\u003eJAB DUC IE Indirect\u003c\/strong\u003e is a compact, internal-expansion unvented hot water cylinder heated from a \u003cstrong\u003egas or oil boiler, or a renewable heat source\u003c\/strong\u003e, with a factory-fitted 3kW immersion providing independent back-up. Available in \u003cstrong\u003esix capacities from 120L to 300L\u003c\/strong\u003e, it's constructed from \u003cstrong\u003eduplex stainless-steel\u003c\/strong\u003e, and because the expansion volume is built in, there's \u003cstrong\u003eno external expansion vessel\u003c\/strong\u003e to find wall space for. It is \u003cstrong\u003emanufactured in Britain\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:10px; margin:20px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#FFFFFF; text-align:center; padding:16px 8px; border-radius:8px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; line-height:1.2;\"\u003e120–300L\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.9;\"\u003eCapacity Range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#FFFFFF; text-align:center; padding:16px 8px; border-radius:8px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; line-height:1.2;\"\u003e6\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.9;\"\u003eSizes Available\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#FFFFFF; text-align:center; padding:16px 8px; border-radius:8px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; line-height:1.2;\"\u003e550mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.9;\"\u003eDiameter (All Sizes)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#FFFFFF; text-align:center; padding:16px 8px; border-radius:8px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; line-height:1.2;\"\u003e1 x 3kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.9;\"\u003eBack-Up Immersion\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#FFFFFF; text-align:center; padding:16px 8px; border-radius:8px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; line-height:1.2;\"\u003e10 bar \/ 90°C\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.9;\"\u003eT\u0026amp;P Relief Setting\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#FFFFFF; text-align:center; padding:16px 8px; border-radius:8px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; line-height:1.2;\"\u003eInternal\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.9;\"\u003eExpansion Design\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEA; border-left:4px solid #C62828; padding:14px 18px; margin:18px 0; border-radius:4px; font-size:15px; line-height:1.55; color:#333333;\"\u003e\n\u003cstrong\u003eInstaller requirement:\u003c\/strong\u003e this is an unvented hot water cylinder and must be installed, commissioned, and notified to Building Control by a \u003cstrong\u003eG3-qualified (Benchmark) installer\u003c\/strong\u003e in line with Building Regulations Part G3.\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #B26A00; padding:14px 18px; margin:18px 0; border-radius:4px; font-size:15px; line-height:1.55; color:#333333;\"\u003e\n\u003cstrong\u003eNote on stated capacity range:\u003c\/strong\u003e JAB's marketing copy for this range advertises “90–300 litre capacities”, but no 90L model is currently listed for sale – the smallest size available is 120L. Confirm with JAB Products directly if a 90L unit is required.\u003c\/div\u003e\n\u003cdiv style=\"background:#F7FBFA; border-left:4px solid #008377CF; padding:14px 18px; margin:18px 0; border-radius:4px; font-size:15px; line-height:1.55; color:#333333;\"\u003eAll electrical connections, including the back-up immersion heater, must be wired by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e in accordance with \u003cstrong\u003eBS 7671\u003c\/strong\u003e; actual cable sizing should be calculated on site rather than assumed from generic figures.\u003c\/div\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#008377CF; margin:32px 0 16px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eWhy Choose the JAB DUC IE Indirect\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:14px; margin:20px 0;\"\u003e\n\u003cdiv style=\"background:#F7FBFA; border:1px solid #E0EDEB; border-radius:8px; padding:16px; flex:1; min-width:250px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:8px; font-size:15px;\"\u003eInternal Expansion Design\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.55; color:#333333;\"\u003eBuilding the expansion volume \u003cstrong\u003einside the cylinder\u003c\/strong\u003e removes the need for a separate external expansion vessel, simplifying installation and freeing up airing-cupboard space.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#F7FBFA; border:1px solid #E0EDEB; border-radius:8px; padding:16px; flex:1; min-width:250px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:8px; font-size:15px;\"\u003eDuplex Stainless-Steel Shell\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.55; color:#333333;\"\u003eThe \u003cstrong\u003eduplex stainless-steel\u003c\/strong\u003e body resists pitting and stress corrosion far better than standard 304-grade tanks, giving reliable long-term performance in hard-water areas.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#F7FBFA; border:1px solid #E0EDEB; border-radius:8px; padding:16px; flex:1; min-width:250px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:8px; font-size:15px;\"\u003eBoiler or Renewable Heat Source\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.55; color:#333333;\"\u003eThe indirect coil connection lets the cylinder be heated by a \u003cstrong\u003egas or oil boiler, or a renewable heat source\u003c\/strong\u003e such as a heat pump, with the coil doing the day-to-day heavy lifting.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#F7FBFA; border:1px solid #E0EDEB; border-radius:8px; padding:16px; flex:1; min-width:250px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:8px; font-size:15px;\"\u003eIndependent Immersion Back-Up\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.55; color:#333333;\"\u003eA factory-fitted \u003cstrong\u003e3kW immersion heater\u003c\/strong\u003e gives an independent electric back-up route to hot water if the primary heat source is ever down.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#F7FBFA; border:1px solid #E0EDEB; border-radius:8px; padding:16px; flex:1; min-width:250px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:8px; font-size:15px;\"\u003eCompact 550mm Diameter\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.55; color:#333333;\"\u003eA consistent \u003cstrong\u003e550mm diameter\u003c\/strong\u003e across the whole range keeps the footprint predictable when planning airing-cupboard space, whatever the capacity chosen.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#F7FBFA; border:1px solid #E0EDEB; border-radius:8px; padding:16px; flex:1; min-width:250px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:8px; font-size:15px;\"\u003eFull Unvented Kit Included\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.55; color:#333333;\"\u003eThe \u003cstrong\u003ecomplete unvented kit\u003c\/strong\u003e ships with every cylinder, so the installer isn't left sourcing safety-group components separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#008377CF; margin:32px 0 16px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eSizes \u0026amp; Pricing\u003c\/div\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; margin:20px 0; font-size:13px;\"\u003e\n\u003ctr\u003e\n\u003cth style=\"background:#008377CF; color:#FFFFFF; padding:9px 12px; font-size:13px; text-align:left;\"\u003eCapacity\u003c\/th\u003e\n\u003cth style=\"background:#008377CF; color:#FFFFFF; padding:9px 12px; font-size:13px; text-align:left;\"\u003eDimensions (H x D)\u003c\/th\u003e\n\u003cth style=\"background:#008377CF; color:#FFFFFF; padding:9px 12px; font-size:13px; text-align:left;\"\u003eBack-Up Immersion\u003c\/th\u003e\n\u003cth style=\"background:#008377CF; color:#FFFFFF; padding:9px 12px; font-size:13px; text-align:left;\"\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e120L\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e925 x 550mm\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e1 x 3kW\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e£630.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e150L\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e1125 x 550mm\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e1 x 3kW\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e£660.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e170L\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e1225 x 550mm\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e1 x 3kW\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e£690.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e200L\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e1425 x 550mm\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e1 x 3kW\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e£720.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e250L\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e1725 x 550mm\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e1 x 3kW\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e£810.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e300L\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e1950 x 550mm\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e1 x 3kW\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; font-size:13px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e£870.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#008377CF; margin:32px 0 16px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; margin:20px 0; font-size:14px;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:10px 14px; font-size:14px;\"\u003eConstruction\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eCylinder Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003eIndirect, unvented, duplex stainless-steel, internal expansion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eCoil \u0026amp; Fittings Grade\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e316L stainless-steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eManufacture\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003eMade in Britain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eNote\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003eActual water capacity is slightly less than the nominal litre rating due to the internal air gap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:10px 14px; font-size:14px;\"\u003eConnections \u0026amp; Safety (All Sizes)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eFittings\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e22mm compression, 316L stainless-steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eTemperature \u0026amp; Pressure Relief Valve\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003eFactory-set 10 bar \/ 90°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eExpansion\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003eInternal – no external expansion vessel required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eHeat Source\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003eGas\/oil boiler or renewable heat source, via internal coil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eUnvented Kit\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003eFull kit supplied\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:10px 14px; font-size:14px;\"\u003eWarranty\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eInner Container\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003eLifetime manufacturing warranty*\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB; width:55%;\"\u003eComponents\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px; font-size:14px; color:#333333; border-bottom:1px solid #E0EDEB;\"\u003e2 years*\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; color:#008377CF; margin:32px 0 16px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"margin:20px 0;\"\u003e\n\u003cdetails style=\"margin-bottom:10px; border:1px solid #E0EDEB; border-radius:6px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; padding:12px 16px; font-weight:700; font-size:14px; cursor:pointer; list-style:none;\"\u003eWhat heat source does this cylinder use?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6; color:#333333; background:#FFFFFF;\"\u003eThe internal coil is designed to be heated by a \u003cstrong\u003egas or oil-fired boiler, or a renewable heat source\u003c\/strong\u003e such as a heat pump, with the factory-fitted 3kW immersion providing independent electric back-up.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:10px; border:1px solid #E0EDEB; border-radius:6px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; padding:12px 16px; font-weight:700; font-size:14px; cursor:pointer; list-style:none;\"\u003eDo I still need an external expansion vessel?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6; color:#333333; background:#FFFFFF;\"\u003eNo. The \u003cstrong\u003einternal expansion design\u003c\/strong\u003e builds the expansion volume into the cylinder itself, so a separate wall-mounted expansion vessel isn't required, unlike JAB's Duc 2 external-expansion ranges.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:10px; border:1px solid #E0EDEB; border-radius:6px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; padding:12px 16px; font-weight:700; font-size:14px; cursor:pointer; list-style:none;\"\u003eHow does this differ from the IE Direct range?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6; color:#333333; background:#FFFFFF;\"\u003eThe IE Direct range has \u003cstrong\u003eno boiler coil\u003c\/strong\u003e and relies entirely on immersion heaters, while this Indirect range is heated primarily by a \u003cstrong\u003eboiler or renewable source\u003c\/strong\u003e, with a single immersion as back-up rather than the main heat source.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:10px; border:1px solid #E0EDEB; border-radius:6px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; padding:12px 16px; font-weight:700; font-size:14px; cursor:pointer; list-style:none;\"\u003eDoes this cylinder need to be installed by a qualified installer?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6; color:#333333; background:#FFFFFF;\"\u003eYes. As an unvented hot water cylinder it must be installed, commissioned, and notified to Building Control by a \u003cstrong\u003eG3-qualified (Benchmark) installer\u003c\/strong\u003e in line with Building Regulations Part G3.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:10px; border:1px solid #E0EDEB; border-radius:6px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; padding:12px 16px; font-weight:700; font-size:14px; cursor:pointer; list-style:none;\"\u003eWhat T\u0026amp;P relief valve setting does this range use?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6; color:#333333; background:#FFFFFF;\"\u003eThe factory-fitted temperature and pressure relief valve is set at \u003cstrong\u003e10 bar \/ 90°C\u003c\/strong\u003e, which is higher than JAB's external-expansion Duc 2 range (7 bar); check this against your system design.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:10px; border:1px solid #E0EDEB; border-radius:6px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; padding:12px 16px; font-weight:700; font-size:14px; cursor:pointer; list-style:none;\"\u003eWhat warranty does JAB provide?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6; color:#333333; background:#FFFFFF;\"\u003eJAB cylinders carry a \u003cstrong\u003elifetime manufacturing warranty on the inner container\u003c\/strong\u003e (2 years on components); confirm current terms and registration with JAB Products or your supplier at the time of purchase.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"JAB","offers":[{"title":"90L","offer_id":65213551280477,"sku":"DUCIE-IN-90L","price":650.0,"currency_code":"GBP","in_stock":true},{"title":"120L","offer_id":65213551313245,"sku":"DUCIE-IN-120L","price":670.0,"currency_code":"GBP","in_stock":true},{"title":"150L","offer_id":65213551346013,"sku":"DUCIE-IN-150L","price":695.0,"currency_code":"GBP","in_stock":true},{"title":"170L","offer_id":65213551378781,"sku":"DUCIE-IN-170L","price":730.0,"currency_code":"GBP","in_stock":true},{"title":"200L","offer_id":65213551411549,"sku":"DUCIE-IN-200L","price":790.0,"currency_code":"GBP","in_stock":true},{"title":"250L","offer_id":65213551444317,"sku":"DUCIE-IN-250L","price":895.0,"currency_code":"GBP","in_stock":true},{"title":"300L","offer_id":65213551477085,"sku":"DUCIE-IN-300L","price":850.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/JABDUCIEIndirectUnventedCylinder.jpg?v=1783665863","url":"https:\/\/qualityheating.co.uk\/products\/jab-duc-ie-indirect-unvented-cylinders-120l-300l","provider":"AIZO Quality Heating","version":"1.0","type":"link"}