The compact HL3000t heat interface unit is designed as an indirect transfer unit for supplying heat and fulfils two purposes at once: decentralised DHW heating based on the instantaneous water heating principle and decentralised indirect heat distribution in residential units. Various selectable hydraulic components ensure on-demand DHW heating, distribution of heat energy as well as the calculation of energy costs.

The HL3000t is designed for surface mounting and can be installed in pantries, storerooms, etc. The unit should ideally be positioned close to the domestic hot water drawoff points for each apartment.

The heat interface units in the HL3000t series are designed for DHW heating and indirect heat distribution in multistorey residential buildings. Primary energy is supplied via a central buffer cylinder; DHW is heated in the domestic hot water module as required, according to the instantaneous water heating principle. Via the additional indirect heating circuit connection, the heating surfaces in the living space can be connected to underfloor heating circuit manifolds or radiators. Fittings are included in the modules for the installation of heat meters and cold water meters.



3000t (Mechanically Controlled HIU)

Heating Load (Max): 10 kW
Domestic Hot Water Load (from): 55 to 60 kW

Primary Flow Temperature (Max): 85°C
Primary Return Temperature  (On DHW): 65°C
Primary Return Temperature  (On heating only): 65°C
Secondary Flow Temperature: 80°C
Secondary Return Temperature: 60°C

Hot Water Storage Temperature: 60°C
Cold Water Inlet Temperature: 10°C
Hot Water Storage Volume (At design conditions): 100 to 300 litres

Primary on DHW Load (Max):  0.25 kg/sec
Primary on Heating Load (Max): 0.2 kg/sec

Honeywell (Heating): V4043

SWEP: E6T x 40

Please fill out the form to access the 3000t, Technical Data Sheet

The above performance figures are indicative only and units of differing duties are readily available if required. 

Technical Assistance:

No two schemes are the same! ! !

All Heat Interface Units (HIU’s) produced by HeatLink (Technical Solutions) Ltd. are designed specifically for each scheme.

All HIU’s are made to specific requirements as we believe each scheme is unique and our solution often necessitates bespoke units for each individual application.

The components and controls included are specifically selected based upon the operating criteria of the particular system and the requirements of the scheme designer, operator and consumer. Additionally, by designing each board specifically for the scheme considered we can configure the physical size of the unit and layout of the connecting pipe work to assist in the board’s location and installation.

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Technical Enquires:

2A Baxter Rd
Sheffield, S6 1JF
Unite Kingdom