Air source heat pump first fix.

I’ve been told it’s a NIBE air source heat pump F2040-16. I don’t have any other associated documentation.

This one? https://www.nibe.eu/assets/documents/25739/231846-8.pdf

  - Andy.

Yes that appears to be the one. 

That PDF is a good start, looks like you may need to  source a single phase 25A C-type breaker then, and skipping to P77 of that PDF, I think it expects the mains goes to the outside unit, and then that sends mains (LNE) and signalling cables( A/B and gnd)  go indoors to the indoor unit, and them further bus wiring to thermostats/controls etc.

However, I have only skim read it, I suggest you check in more detail.

Mike.

That PDF is a good start, looks like you may need to  source a single phase 25A C-type breaker then, and skipping to P77 of that PDF, I think it expects the mains goes to the outside unit, and then that sends mains (LNE) and signalling cables( A/B and gnd)  go indoors to the indoor unit, and them further bus wiring to thermostats/controls etc.

However, I have only skim read it, I suggest you check in more detail.

Mike.

Yes, that's pretty much it. I've done a few, they are remarkably easy if you have done a few conventional CH  systems before.

Largish cable to where the the condensor/fan unit is, typically 6mm T+E, though could be bigger, where it terminates in a rotary isolator. The ones I fitted came complete with the control cables, which, generally go back to the cupboard where the hot water tank is.

There are also supplies for one or 2 immersion heaters. The control wires and immersion supplies are then fitted to the controllers and immersions/stats etc. Rooms stats are nearly always wireless.