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2 heating zone installation / set-up questions

66paulyg
66paulyg
in General Questions & Topics

Hi Everyone

Just before Christmas, my (heat only) boiler was replaced & at the same time, I bought a Tado 'Starter Kit - Wireless Smart Thermostat V3+ (incl programmer with hot water control)' and had it installed.

My house originally had 2 wired thermostats, each controlling a separate heating zone via motorised valves.

The starter kit was installed with both motorised valves connected to the same terminals on the wireless receiver, located next to the hot water cylinder. The wired thermostats were disconnected. This effectively made a single heating zone to get us up and running.

On the advice of the installer, I have purchased an additional starter kit (exactly the same one) with the intention of connecting its wireless receiver alongside the first, but connecting each one to its own motorised valve. I then intend to use the wireless thermostats to control the 2 motorised valves, reinstating the 2 zones I had originally.

Is this the correct way to do this? How would I associate the thermostats with their respective wireless receiver? Which one would control the hot water?

I also intend to connect 4x Tado TRVs and would need to associate some to one wireless receiver and some to the other.

Any advice would be greatly appreciated, as my additional starter kit and TRVs have just arrived from Tado & I want to get them going.

Cheers

Paul

Best Answer

  • GrilledCheese2
    GrilledCheese2 ✭✭✭
    Answer ✓

    Your installer has given you bad advice. You can only have one starter kit in a system, as cannot have two bridges. And you can only have one wireless receiver. What you need is the add-on wired thermostat to control the second CH zone valve. Alternatively you keep the single zone and use the smart TRVs to create additional zones e.g. put a smart TRV in every bedroom so you do not heat those rooms during the daytime.

Answers

  • 66paulyg
    66paulyg

    Thanks GrilledCheese2! So could I fit smart TRVs to the zone controlled by the add-on wired thermostat?

  • GrilledCheese2
    GrilledCheese2 ✭✭✭

    Yes. You will have two zone controllers and can link the smart TRVs to either one. Alternatively you can choose to link the TRVs to neither and leave them to operate independently. In independent mode the TRV has a schedule and can turn the radiator valve on and off, but it cannot demand the boiler to start up. The radiator will only heat up when another device on the same circuit is demanding heat. So you could have some high priority rooms that are demanding heat to maintain the optimal level of comfort and some lower priority rooms that only heat up when the boiler is already active. The benefit of this mode is it’s more efficient to heat multiple radiators at the same time.

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