Commissioning guidance

Commissioning an Air Source Heat Pump (ASHP) is the process of ensuring a newly installed heat pump is set up correctly and operating efficiently. This involves a series of checks and adjustments by a qualified engineer to optimize performance and validate the installation. 

Key Aspects of ASHP Commissioning:

• System Checks:
  Commissioning engineers will thoroughly check the heat pump's components, including refrigerant levels, electrical connections, and system pressures. 

• Control Parameter Settings:
  They will adjust control parameters like flow rates, temperatures, and timings to match the specific requirements of the property and heating system. 

• Hot Water Settings:
  Commissioning also involves configuring domestic hot water settings, ensuring the system provides adequate hot water supply. 

• Insulation and Pipework:
  The engineer will check the insulation of pipes, especially outdoor pipework, ensuring it is water and UV resistant. 

• 3-Port Valve:
  The 3-port valve, which directs hot water to the heating or hot water circuits, may need to be reversed compared to traditional systems. 

• Documentation and Sign-off:
  Commissioning engineers provide documentation, including a commissioning checklist and often a MCS (Microgeneration Certification Scheme) sign-off, which is necessary for certain incentives like the RHI (Renewable Heat Incentive). 

• Customer Handover:
  Commissioning includes explaining the system's operation and controls to the homeowner. 

Why is Commissioning Important?

• Optimal Performance:
  Proper commissioning ensures the ASHP operates at its designed efficiency, maximizing energy savings and comfort. 

• Warranty Compliance:
  Many manufacturers require professional commissioning to validate the warranty. 

• Accurate Settings:
  Correct settings prevent issues like short cycling (frequent on/off cycles) and ensure the system meets the heating demands of the property. 

• Building Regulations:
  Installation and commissioning must comply with building regulations, and a qualified installer can provide guidance on this. 

• RHI Compliance:
  MCS sign-off, often a result of commissioning, is required for claiming government incentives. 

Accessing Commissioning & Test Mode on a Daikin Heat Pump