This Ultraflow 120L Standard Indirect unvented hot water cylinder connects directly to your central heating boiler and mains water supply. Specifically, it provides a highly reliable and efficient method of delivering mains-pressure hot water to all outlets simultaneously. Furthermore, thanks to its high-quality construction and factory-fitted foam insulation, you significantly speed up installation while minimizing daily heat loss.

Therefore, this indirect cylinder works perfectly for smaller homes or apartments, typically with a single bathroom or shower room. Additionally, it easily handles high-pressure demands, ensuring powerful showers and consistent flow rates without the need for a cold water storage tank in the loft.

The cylinder features a robust construction manufactured from premium Duplex stainless steel for exceptional corrosion resistance. Moreover, the unit includes a high-efficiency corrugated heating coil designed for rapid heat recovery. As a result, this durable build makes it fully hygienic and reliable for long-term residential installations, offering complete peace of mind with a 25-year manufacturer guarantee on the inner vessel.

Key Features & Benefits:

• Mains Pressure Hot Water: The unvented design allows for high-pressure water delivery across the entire property. Consequently, you achieve powerful, consistent flow rates at all your taps and showers simultaneously, even when multiple outlets are in use.

• Premium Duplex Stainless Steel: The system includes a solid Duplex stainless steel inner vessel. For example, when subjected to varying water conditions, this high-grade material effectively resists corrosion and significantly extends the overall lifespan of the unit.

• High-Efficiency Heating Coil: The internal corrugated coil acts as a highly effective heat exchanger. Importantly, it completely maximizes heat transfer from your boiler to the stored water. Therefore, it guarantees fast reheat times and excellent energy efficiency to keep running costs low.

• Complete Unvented Kit Included: The package comes fully equipped with all necessary safety and control components, including an expansion vessel, inlet control group, temperature and pressure relief valve, and a dual thermostat. In particular, this comprehensive kit provides everything needed for a safe, compliant installation right out of the box.

Technical Specifications:

• Brand: Ultraflow

• Product Type: Unvented Hot Water Cylinder

• Cylinder Type: Unvented

• Heating Type: Indirect (Heated via external boiler)

• Capacity: 120 Litres

• Format: Standard

• Dimensions (Height x Diameter): 915mm x 545mm

• Vessel Material: Duplex Stainless Steel

• Immersion Heater (Standard): 1 x Factory-Fitted Incoloy Immersion Heater

• Immersion Upgrades (On Request): Extra immersion(s) can be added; options include 6kW Incoloy, 3kW Titanium, or 6kW Titanium

• Connection Sizes:

  • 3/4″ comp: Hot Draw, Cold Feed, Secondary Return & Coil Connections

  • 1 3/4″ F: Immersion(s)

  • 1/2″ F: T & P relief Valve

• Other Upgrades Available: Highflow cylinder (1″ hot/cold connections & 28mm inlet group), bigger coil for High Gain/Quick Recovery, larger capacity expansion vessel

• Included Components: Expansion vessel, inlet control group, T&P relief valve, dual thermostat, motorized valve, and tundish

• Guarantee: 25-year manufacturer warranty on the inner cylinder