Panasonic Aquarea L series cooling

[Benpointer]

Hi all, I appreciate this is not pressing right now but come the summer we'd like to run our Aquarea L series in cooling mode.  Can anyone tell me how to arrange our set-up for that?  My electrician is scratching his head.

 

We have Heatmiser Neostat v2 room stats in most rooms - possibly unnecessarily but they are there now.  I think I understand how they control the ASHP heating: temperature drops below X°C and they switch on causing a demand signal to the UFH actuator and ASHP, which fires up and starts pumping warm water through the UFH loop... until the room temp rises above X°C and the Neostat switches off, the actuator closes and the ASHP stops heating.

 

So, what happens when the room temp gets above Y°C, where Y is 'too hot'?  

 

Do I need separate thermostats to control the cooling?   Or should I have had Neostat HC/HC1 stats installed?   And do these need two cables back to the ASHP, where we have only put in one?  And how do I link in the floor sensors we put in a couple of rooms for protection agains condensation risk?

 

Sorry for a lot of questions, I am struggling to find anywhere that explains how this should be set up.  If someone could point me at a Panasonic manual that sets it out clearly, I'd be grateful.

 

Cheers

[JohnMo]

Think you should of asked the questions before you parted with the money. You really need an UFH controller that can heat or cool, this would reverse the logic of the thermostats. And reverse when the call call for heat or cool happens.

 

Your heat pump should be switched between heat/cool, this can either be from the controller or a zero volt input is typical.

 

Your whole system would have been simpler, no actuators, one proper thermostat or use the controller only as the better option.

 

Condensation risk is managed by setting the correct flow temperature so 16-17 degs for floor. Floor sensors are way too late.

[Benpointer]

31 minutes ago, JohnMo said:

Think you should of asked the questions before you parted with the money. You really need an UFH controller that can heat or cool, this would reverse the logic of the thermostats. And reverse when the call call for heat or cool happens.

 

Your heat pump should be switched between heat/cool, this can either be from the controller or a zero volt input is typical.

 

Your whole system would have been simpler, no actuators, one proper thermostat or use the controller only as the better option.

 

Condensation risk is managed by setting the correct flow temperature so 16-17 degs for floor. Floor sensors are way too late.

Good points... but not terribly helpful right now tbh.

[JohnMo]

1 hour ago, Benpointer said:

So, what happens when the room temp gets above Y°C, where Y is 'too hot'?

In heat mode you get hot and stay hot until you open the windows.

 

Your heat pump can only do heating or cooling, not both at the same time. You don't want to heat at night and cool in the afternoon, that's an expensive folly. Heat and cool is a seasonal thing not a day to day thing.

 

You need separate thermostats for cooling, if the ones you have cannot be selected to cooling. You change the ASHP and the thermostats seasonally all to together.

 

Any more helpful?