HIU Commissioning

Commissioning a Heat Interface Unit is essential in optimising it’s efficiency and maximising the unit’s full potential, along with ultimately extending its longevity.

We will ensure your unit’s parameters are accurately set up so that you aren't using or being charged for any unnecessary extra energy consumption that is usually caused by valves settings being set incorrectly.

As part of our commissioning we will also make sure that your heat meter is correctly set up and working so that the precise kWh usage is being recorded and sent back to the energy provider for billing.

Heat Interface Unit Commissioning Checklist:

  • Flow temperature (T1)

  • Return temperature (T2)

  • System design Delta T

  • Cold pressure fill (1.5 bar)

  • PRV safety inspected

  • Strainer cleared of post install debris

  • Hot water target temperature set

  • DHW time to kitchen tap (45 seconds)

  • Is install in a hard water area (above 200ppm)?

  • If above 200ppm, has scale reducer been fitted?

  • Entire unit vented of air

  • Heating & controls tested

  • Pipe connections checked

  • Heat meter & kPa analysis

  • Differential Pressure tested

Get in touch with us today to book an appointment to have a newly installed unit expertly commissioned by our specialists Heat Interface Unit engineers.

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