The Frese EcoAdvance Heat Interface Unit is suitable for provision of Hot water and heating to individual apartments served by a central district heating energy centre. Hot water and heating are provided by means of an indirect wall mounted twin plate heat interface unit (HIU) for the generation of instantaneous domestic hot
water and indirect space heating. The HIU will provide hydraulic separation between the domestic hot water (DHW), space heating circuit and the primary low temperature heating system via a pair of stainless steel brazed plate heat exchangers. Primary water flow to the hot water and heating plates is regulated by a pair of fast acting electronic pressure independent control valves under the control of a programmable electronic controller.  The unit is able to achieve DHW temperature from the plate within 10 seconds.

All components are housed within a fully insulated enclosure measuring 640mm high x 490mm wide x 271mm deep and have a thermal loss of no greater than 50 Watts.

• Advanced programmable electronic controller.
• Electronic pressure independent control valves.
• Hot water priority within 3 seconds.
• Anti-legionella programme.
• Compact stainless steel heat exchangers.
• Expansion vessel.
• Pre-insulated cover.
• Very low standby losses (less than 50 watts).
• Two DHW options, Comfort and Eco modes.
• Direct volt free connection for external enable signal.
• Domestic hot water return pump within the unit housing (optional).
• Programmable DHW temperature range.
• Programmable heating supply temperature range.
• Optional programmable heating return temperature limiter.

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