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Unrivalled performance Our pioneering technology and control systems deliver high precision heat management and unrivalled performance in both domestic and district heating environments.

Best for through-life costs Intelligent design leads to greater simplicity – that’s why our systems are cost effective to install, more reliable and cheaper to run and operate.

Better by design Our unique and innovative technology has been refined over many years and is protected by numerous patents relating to water storage, heat exchange and the networking of communal heating systems.

The DATA SPLIT is our latest twin plate HIU and it represents the new standard, combining all the latest technologies into a solid, compact unit that out performs anything in its class.

The principles behind the control system are well proven in our DATA, DIGI and SLIM products, however the differentiating feature of the DATA SPLIT HIU is that it is supplied without the central heating expansion vessel, filling loop and safety relief valve, enabling a standard ‘off-the-shelf’ sealed system kit to be fitted in an accessible location away from the HIU, in a convenient position for service and maintenance.


HIU Type Heating and Hot Water
Hot Water Configuration Indirect
Heating Configuration Indirect
Heating Temperature Control Yes
Built-in Heat Meter Yes
Dimensions – HIU Case (mm) 560 (W) x 470 (H) x 255 (D)
Dimensions – inc. Plumbing Jig (mm) 560 (W) x 580 (H) x 305 to 330 (D)
Heating Output (nominal) 25kW
Hot Water Output (nominal) 65kW
Sealed System Kit Position External to casing


The DATA SPLIT comes in an attractive EPP casing with remarkably low heat losses less than 50W. All pipework connections are bottom entry and the unit is supplied with a pre-plumbing rail as standard. A number of optional extras are available, as shown below.



  • Decorative white steel casing wrap
  • Case and heat meter tamperproof security fixings
  • Various heat meter models
  • Landlord security valve or relay kit
  • Standard Sealed system kit, with 8Ltr expansion vessel (Larger sizes are available)
  • Rear mounted Sealed system kit, with 6Ltr expansion vessel
  • Top pipework adaptor kit
  • Differential pressure control valve for >2.5 bar ΔP
  • DHW recirculation pump kit (for mounting external to casing)
  • Water hammer arrestor (for mounting external to casing)
  • ModBus communication module


DATA SPLIT Datasheet   DATA SPLIT Installation Instructions


Technical Detail

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