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Heat Pump + Tado Setup: Smarter Control for Secondary Pumps?

 
Air Source Heat Pumps (ASHPs)
Last Post by Mars 2 hours ago
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 Lloydi
(@lloydi)
New Member Member
Joined: 1 day ago
Posts: 1
Topic starter 27/09/2025 8:47 am  

Hi everyone,

My heat pump (Samsung Gen 7 controlled by Havenwise) currently operates independently of my home's heat distribution system (underfloor heating downstairs and radiators upstairs, distributed via 3 secondary pumps with a Tado thermostat in each room to control the UFH manifolds' actuators and the on/off of the secondary pumps).

I currently have my Tado room target temperatures set well above the real target in order to ensure that the secondary pumps remain running in anticipation of the heat pump turning on to, well, pump heat into the house. I'm concerned that this is adding unnecessary wear and tear to the pumps as they are, essentially, running 24/7.

I am interested in trying to form a direct link between the on/off of the heat pump and the on/off of the secondary pumps. My initial thought is that I could attach smart relays to each of the secondary pumps that are turned on and off by a state change of the heat pump (heat pump turns on = close relays and turn secondary pumps on, heat pump turns off = open relays and turn secondary pumps off).

I have also considered trying to get my system to operate fully open loop, remove the secondary pumps and just use the primary pump in the heat pump to distribute the heated water around the house, but I think this may be a long and involved task (we also have a 3-pipe 100l buffer in the way to complicate matters), whereas adding relays to 3 secondary pumps would, possibly, be a less invasive process.

Has anyone ever had a similar experience and found a reliable, elegant solution?

Thanks!


This topic was modified 2 hours ago by Mars

   
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Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 5 years ago
Posts: 3481
28/09/2025 10:22 am  

I suspect this is one for @pirate-rich 


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