Compatibility

Antiscold

Hello,

I have a boiler for water and heat that has a dual controller and then a thermostat to control the temps. I also have water solar but looking at the diagram this is not controlled by this as I have a separate solar controller. I want a tado V3+ and the values for the radiator. I'm hoping to keep my newborns room at a stable temp, will the the values be able to kick the boiler on to heat one zone ?

Lastly the wiring looks hopefully fairly simple I'd appreciate if anyone can confirm which wire goes to what. I'm fairly confident with electrics but I don't want to blow anything up!

I have a logic heat 18 boiler for reference. I have included pictures of both the controller wiring and the thermastat.

I'm presuming when I install the tado V3 I can remove the thermastat as it will use the wireless one?

First 3 pics are the controller and wiring

Thanks

policywonk

Hello. The EP2002 series is a very reliable programme. According to the wiring you home seems to have two zone valves, one dedicated to Hot Water for a tank, another dedicated to Central Heating. According to the installation guide for your boiler you also have an external pump. This means, if you want to create a one for one swap, you will need:

1. A V3 Internet bridge
2. A V3 wireless receiver to replace the Potterton.
3. One V3 Wired Thermostat to replace the Salus.

There is a hurdle to overcome. As each radiator (with a smart TRV) hits the room temperature it needs, it will close its valve and stop asking the boiler for heat. The boiler will keep going until all the thermostats stop asking for heat.

• However one radiator, the one closest to the wall thermostat, has an unusual impact.
• If it meets its room temperature before the others, it will cause the wall thermostats to close the the zone valve which allows heat through, even though all the others have asked the boiler to continue to provide heat- forcing a problems.

To overcome this, would strongly recommend the following:

1. Temporarily, turn down the flow of heat running through the radiator closest to the Wall thermostat, and it must not have a TRV. In this way it will warm up more slowly than the rest and not stop heat getting through to the others.
2. Long term. have a plumber come in and replace the Central Heating Zone valve with an automatic bypass valve, carefully calibrated to shut down when none of the radiators want heat. Also fit a Smart TRV head on that radiator.

With regard to the Hot Water side, it is likely that your solar team installed a tank with dual coils, one for solar heating, one for boiler heat- and then wired it in so nothing had changed for the boiler. This shouldnt present a problem.

Come back, let us know what you decided and how it went.