Type 3000 (Bespoke HIU)

  • This HIU configuration has heat supplied direct from the boiler source with individual plate heat exchangers supplying the secondary heating and instantaneous domestic hot water supply.
  • The secondary heating and instantaneous domestic hot water is supplied by separate heat exchangers and controlled by individual 2 port self-acting valves situated in the primary heating pipe circuits.
  • Additional heating zone valves can be incorporated into the pipework system to comply with Part L1A of the current regulations
  • Mains cold water is connected to the inlet of the plate heat exchanger for the supply of domestic hot water.
  • This HIU is suitable for high rise buildings with high pump and or static heads.
  • A white enamel cover is provided if required to leave an aesthetically pleasing unit.
  • These HIU detail is suitable for operation on most pre-payment systems, and also on hard-wired or radio-controlled meter reading systems.





Type 3000 (Bespoke HIU)


Heating Load (Max): 15 kW
Domestic Hot Water Load (from): 33.4 to 60 kW 

Primary Flow Temperature (Max): 85°C
Primary Return Temperature  (On DHW): 40°C
Primary Return Temperature  (On heating only): 65°C
Secondary Flow Temperature: 80°C
Secondary Return Temperature: 60°C

Hot Water Storage Temperature: 55°C
Cold Water Inlet Temperature: 10°C
Hot Water Storage Volume (At design conditions): 10 to 20 l/min

Primary on DHW Load (Max):   0.36 kg/sec
Primary on Heating Load (Max): 0.2 kg/sec

Honeywell (Heating): V4043
Danfoss (DHW): AVTB

SWEP: E8T x 12 to 40

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.

+44 (0)114-231-3700
Monday – Friday
09:00 -17:00

Technical Enquires:

2A Baxter Rd
Sheffield, S6 1JF
Unite Kingdom