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  • Warmflow DIRECT Unvented Stainless Steel Hot Water Cylinder 250 LITRE
  • Warmflow DIRECT Unvented Stainless Steel Hot Water Cylinder 250 LITRE
  • Warmflow DIRECT Unvented Stainless Steel Hot Water Cylinder 250 LITRE
  • Warmflow DIRECT Unvented Stainless Steel Hot Water Cylinder 250 LITRE

Warmflow DIRECT Unvented Stainless Steel Hot Water Cylinder 250 LITRE
Reference: WFDI250UV

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The Warmflow DIRECT Unvented Stainless Steel Hot Water Cylinder 250 LITRE is a superb example of an Unvented DIRECT hot water cylinder, and is part of a collection of Direct Unvented Cylinders from Warmflow. The electrically heated Direct cylinders are designed for instances where the use of fossil fuels is impractical / unavailable. Featuring two immersion heaters, one heating the entire cylinder volume and the other heating a boost volume at the top, the cylinders are able to make use of the Economy 7 tariff in order to minimise the cost of hot water. If used in this way, the cylinder should be sized to provide the complete anticipated daily hot water use, thereby reducing the use of the boost element which runs on the more expensive standard tariff. Warmflow cylinders are supplied with all the necessary parts for a quick, easy, professional installation. Warmflow supply only high quality components from recognized, market leading suppliers and factory fit the temperature and pressure relief valve (T&P) and all cylinder thermostats for convenience and safety.

Warmflow DIRECT DI250UV Cylinder Features:


  • Strainer with pressure reducing valve
  • Check and expansion relief valve
  • Balanced cold connection
  • Expansion vessel complete with flexible connection hose and hanging bracket
  • Tundish attached with Incoloy 3kW immersion heater(s)
  • 1 of the top 3 performing cylinders in the UK
  • Efficient coil-in-coil design
  • Made from duplex stainless steel material
  • Part L approved with seamless welding
  • WRAS approved product
  • KIWA approved Product
  • Recycled materials used in construction
  • Honeywell Diverter Valve


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Warmflow DIRECT DI250UV Cylinder Specifications:


Overall Height 1767mm
Secondary Return Connection 1473mm
Primary Coil Upper Connection 890mm
Primary Coil Lower Connection 243mm
Cold Water Capacity (Litres) 248
Weight When Full (Kg) 286
Standing Heat Loss (Kwh/24H) 1.99
Heat Up Time By Lower Immersion (Mins) 262
Heat Up Time By Upper Immersion (Mins) 131
Manufacturer Part Number DI250UV


Pressure Booster Pump
Suitable Economy Timer
  • Horstmann Electronic Economy 7 Immersion Timer

    Horstmann Electronic Economy 7 Immersion Timer(PC-NU0300701301)

    £119.32 (£99.43 exc. VAT)
  • Horstmann Quartz Economy 7 Time Switch

    Horstmann Quartz Economy 7 Time Switch(PC-NU0300301301)

    £123.82 (£103.18 exc. VAT)
Dimensional Diagram - Warmflow DIRECT Unvented Stainless Steel Hot Water Cylinder 250 LITRE
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