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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 Extra HIU is designed to accommodate large domestic or commercial properties with a heating load in excess of 20kW.  It is able to provide plenty of hot water for multiple outlets but also able to cope with the heat loads of larger buildings.


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) 653 (W) x 900 (H) x 225 (D)
Dimensions – inc. Plumbing Jig (mm) 653 (W) x 1000 (H) x 225 (D)
Heating Output (nominal) 80kW
Hot Water Output (nominal) 65kW


The DATA Extra comes in an attractive Steel casing with all internal components being fully insulated, giving low heat losses less than 50W. All pipework connections are bottom entry and the HIU comes with ModBus communication as standard.  A number of optional extras are available, as shown below.



  • Various heat meter models (fascia mounting external to casing)
  • Landlord security Isolation
  • Integral CH pump (700mm Wide Casing)
  • DHW recirculation pump kit (for mounting external to casing)
  • Water hammer arrestor
  • Differential pressure control valve for >2.5 bar ΔP (for mounting external to casing)
  • Expansion vessel and safety relief valve (for mounting external to casing)


Spec Sheets   SLIM Datasheet   SLIM Installation Instructions


Technical Detail

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