11-17-2022 05:40 AM - edited 11-17-2022 05:44 AM
Good afternoon everyone.
I have just moved into a house that’s just been renovated by the previous owners.
We have no contact with them unfortunately so we have had to find our own way with everything without help. They have installed nest thermostat heating system with 4 zones. One thermostat controls the lounge heating and hot water. The hot water tank has been heating with the immersion heaters. I turned these off and we are trying to heat the water tank with the gas boiler. When I select on or boost with the water the nest terminal clicks but the boiler doesn’t turn on to heat the water and the valve doesn’t open to the boiler. On trying the same with the room heating the same thing happens but the boiler turns on and valve opens to allow flow to the radiators. Can anyone help please? We have had 2 plumbers have different ideas. One wants to install a new nest thermostat and wireless terminal to control the hot water only? Isn’t this what the existing terminal should be doing. Photos attached to help explain. Any help would be hugely appreciated. Thank you Jon
11-17-2022 11:21 AM
The Nest does give you an option of both heating and hot water, you are correct. You need to find out the connections inside the Heat Links. The 3 Heat Links have been looped together, but that could just be for heating only. You will see by removing the covers, terms 1,2,3 are heating, and terms 4,5,6 are hot water.
Terminals 2,3 on each Heat Link are in use for the heating, but you would only need one Heat Link to operate the hot water. That would mean just one thermostat display would be dedicated for hot water.
Have a look under the covers to see what the connections are.
11-17-2022 02:53 PM
Thank you for the info. I will get on that tomorrow and let you know what I find under the heat links. 👍🏻. Fingers crossed cheers Jon
11-18-2022 10:00 AM
Thank you for helping out on this thread, Frustratedddd!
Hey there Jonnyboy777,
I'm just checking up on this thread, do you have any more questions or need any additional help?
Best regards,
Jeran
11-21-2022 10:09 AM
Hey there Jonnyboy777,
Do you have any more questions or need any additional help?
Thank you,
Jeran
11-22-2022 10:27 AM
Hey Jonnyboy777,
Do you have any more questions that we can address? If not, I'll go ahead and lock up this thread in 24 hours.
Just checking up,
Jeran