Type 5000 (Bespoke HIU)

  • This HIU configuration has primary heat to one plate heat exchanger supplying secondary central heating and a primary supply to an indirect hot water storage cylinder
  • The secondary heating temperature and primary heating supply to the hot water storage cylinder are controlled by a 2-port motorised valve installed on the secondary side of the plate heat exchanger.
  • Control of the secondary heating and stored hot water temperature is by standard domestic controls. The heating and hot water temperature are controlled by a programmer and thermostats.
  • Additional heating zone valves can be incorporated into the pipework systems to comply with Part L1A of the current regulations.
  • A white enamel cover is provided if required to leave an aesthetically pleasing unit
  • These HIU’s are available for operation on most all pre-payment systems and on hard wired or radio-controlled meter reading systems.




Type 5000 (Bespoke HIU)


Heating Load (Max): 15 kW
Domestic Hot Water Load (from): 8.5 to 17 kW

Primary Flow Temperature: 85°C
Primary Return Temperature: 65°C
Secondary Flow Temperature: 75 – 80°C
Secondary Return Temperature: 55 – 60°C

Hot Water Supply Temperature: 60 – 65°C
Cold Water Inlet Temperature: 10°C
Hot Water Volume (At design conditions): As per DHW storage vessel

Primary Load (approx.):  0.36 kg/sec

Honeywell (Secondary Heating & DHW Control Valves): V4043
Honeywell Temperature return limiter: V2050DH020

SWEP: E8T x 30 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