If possible heat pumps should always be entered through the PCDB.
Convention 4.07 states:
If a boiler or a heat pump is not in the PCDB, use default
As with any device, to use the PCDB, the exact make, model, and model qualifier from the database must be selected.
With heat pumps however, there can be up to 8 different types for each model qualifier based on flow temperature and the prescence of a weather compensator (see example below)
:
We would suggest Energy Assessors follow the below options if they do not know the flow temperature:
| Flow Temperature | Emitter Type |
|---|---|
| Flow temperature 55°C | Radiators |
| Flow temperature 45°C | Fan Coil Units |
| Flow temperature 35°C | Underfloor |
| Flow temperature 58°C | You cannot make an selection for this based on emitter type |
Please note, this guidance should also be read in line with convention 4.01b which states:
The design flow temperature for condensing boilers and heat pumps should be recorded as unknown unless there is a documentary evidence that the system has been designed and commissioned as a low temperature one