Setting up Hot Water Control
Hi, Here in the UK I have an old fashioned gravity fed heating system with a hot water cyclinder, so I cannot control the hot water system separately from the radiators. However, I’m thinking of getting that changed to a so called fully pumped S plan system which will enable me to control hot water and heating separately. This will require a new cylinder thermostat in the hot water system.
I currently have a slightly older Tado system (V3, I think, NOT V3+) with several smart radiator valves and a couple of thermostats. All I can control now is the heating schedule and temperature. If I change to the new S plan system, can I set up my Tado up differently, so it controls the hot water and heating separately. If so, how? Thank you.
Alan
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I have the same system set up and can control the hot water and heating separately. How long have you had the system. Was it set up professionally or did you install it yourself?. Could you provide a photo of your set up/configuration.
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I first got Tado in 2016 and set it up myself. I just replaced an existing timer thermostat, so it was quite simple. Think it was Tado V2 back then. Not sure what you want a photo of? My app home screen?
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If you have the wired version then you will need the extension kit or the wireless 3+ to manage the hot water.
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Thanks. Actually, I've just gone through all my old Tado emails and found I upgraded to 3+ for a one-off fee in December 2019. Sorry about that. I can't see how to check which version I have in the app.
I've just come across this: so do I just need to buy Wireless Receiver (Programmer with Hot Water Control) - one of these - to add to what I have?
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First you will need to check if the Wireless kit is compatible with your boiler, if it is. You will then have to replace your existing boiler programmer with the wireless programmer pictured above but with the hot water control.
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If the system is to be changed to Y or S plan then the relays in the wireless receiver connect to the valves and it is the latter, together with the cylinder 'stat, which do the boiler switching so I imagine whatever the boiler is it will work . . .
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I guess if the Tado thermostat is compatible with my boiler, the wireless extension will be and can be wired in in the same way. Then I'll just need to set up the wireless connection to the thermostat and valve controlling the hot water?
Are there any special requirements for the valve so it will talk to the wireless extension?
I'll also want to switch boiler heating of the hot water off entirely when there is sufficient solar power to use the immersion heater. Would that be a problem for Tado?0 -
S plan Y plan wiring is here:
https://cdn.brandfolder.io/607DGEMS/as/tqh86npbjjhws5gwkxfncbfh/104172-DIGITAL-WRP01IB01-INSTALLER_MANUAL-TA-UK-00-V2.pdf0 -
@alanlw Hello Alan. Changing to a fully pumped S-Plan should be much more efficient than the gravity system.
Yes, with the Tado wireless receiver you will be able to control the HW and CH independently. You'll need a HW cylinder stat. When your engineer makes the change to S-Plan, he/she should check whether your boiler needs an external bypass. A typical branded zone valve would be good, e.g Honeywell. I'd avoid Y-plan zone valves, too many strange things happen when they go wrong, making fault diagnosis difficult.
No issues here with Tado interaction and Solar PV for HW. We have a 7.5kW solar PV array, 10kWh battery, and EDDI connected to the immersion heater on the HW tank. EDDI can be configured to use excess Solar PV, or the Grid leccy, or none. Lots of options when you sign up for an energy tariff exporting Solar PV to the Grid and cheap overnight leccy. In practice: we charge the battery overnight, sell excess Solar PV to the Grid during the day, Tado controls the CH/HW schedule, and use EDDI occassionally to boost the HW during the day.
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