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Logic Heat Interface Units (HIU) Indirect

The Ideal Heat Interface Units (HIU) are heat energy transfer units, designed for use in conjunction with centralised boilers, district heating or central energy systems. The function is to efficiently transfer heat from
the plant room to the individual dwellings central heating (CH) and domestic hot water (DHW) systems.

The Logic Indirect HIUs are the latest 'intelligent’ range of HIU from Ideal. The Logic HIU is the complete solution for instantaneous hot water production and space heating control. The indirect wall mounted HIU,
providing instantaneous priority direct hot water (DHW) and modulated central heating (CH). This can be converted to under floor heating including inbuilt safety thermostat capability.

Ideal Logic Indirect Heat Interface Unit front

Features & Benefits

  • 2 year parts and labour warranty
  • All the Logic HIUs incorporate a spacer piece which can be easily removed and a heat meter fitted inside the unit. This allows the energy used by each individual apartment to be recorded and charged accordingly
  • Twin plate design hydraulically separates both domestic and space heating from the central primary supply
  • Pump bypass protection, in case of complete radiator TRV shutdown
  • Compact and lightweight
  • Fully insulated EPP front cover
  • Convertible to underfloor heating
  • Ability to pre-heating of the DHW exchanger


  • Compact Wall Hung
    Compact Wall Hung
  • 2 Year Warranty
    2 Year Warranty
  • Erp Prepared
    Erp Prepared

Standard and Optional kits


  • CF ECHO II ultrasonic meter
  • CF ULTRAMAXX V ultrasonic meter
  • Flushing Bypass


For model specifications and downloads please select from models below (if available).

If you wish to download multiple files or forward them on to another individual, please select the files and then click 'Download Selected' button at the bottom of the page to download all selected. Alternatively click on the icon to download individually

Brochures Expand/Close
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HIU Product Guide 2017
Technical Information Expand/Close
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211347 HIU 50 Indirect Spec Sheet.pdf
211348 HIU 75 Indirect Spec Sheet.pdf
BIM components Expand/Close
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BIM files available for this product - Please click here to download.
Installation and user guides Expand/Close
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Logic HIU Installation & Servicing 211203-4.pdf

Other models available in this range