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Does my Smart thermostat need to be at a higher temperature than my Radiator Thermostat

edwar368
edwar368 ✭
edited November 22 in General Questions & Topics

Hi,

A plumber installed my Tado Wireless reciever on my Boiler yesterday and also installed one of my Radiator Thermostats to show me how to do it. He did admit he had never installed a Tado system before, but he told me that for the Radiator value to come on, the Wireless Temperature Sensor should be running also, which sounded odd to me, however he did seem to "prove it" by setting the Wireless Temperature Sensor to low setting, and then setting the the radiator value to a higher setting, and the boiler did not kick in. But when he turned the Wireless Temperature Sensor up, the boiler DID kick in.

Am I missing something? I have 6 other Radiator valves to fit myself, and my general idea was to have the Main thermostat set a little lower, and only the Radiators ones in our main rooms set to high

Best Answer

  • Adzyp
    Adzyp ✭✭
    edited November 22 Answer ✓

    Not sure what he has done there or why?

    You just need the smart thermostat on your radiator. Assuming that's your only device in that room, then that will control the heating. It will kick in when the temp of the room drops below whatever you have programmed. i.e if radiator thinks its 17 degrees, turn the valve up (either manually or via the app) to anything above 17 and it should call for heat and the boiler will kick in.

    Sounds like he has added the wireless temp sensor to the same room, at which point you have to decide which of the 2 devices checks for temp and calls for heat - only one of them can do that per 'room'. Admittedly I do actually do this in one of my rooms, where the radiator thermo is at one side of the room and across the other side of the room its never quite as hot as the TRV thinks, so I use a wireless sensor to manage the temp/call for heat so that it will only stop when that side of the room reaches the temp I want.

Answers

  • wateroakley
    wateroakley Volunteer Moderator
    edited November 22

    Hello @edwar368 Welcome. It all depends on how your plumber has configured the Tado App settings for the rooms. There is a lot of flexibility. Examples using for our Study:

    image.png

    In general:

    • You can set the room as connected to either a) 'zone controller, or b) 'Independent'.
    • The 'zone controller' will be your wireless receiver.
    • a) will allow the Tado measuring device in the room (TRV or thermostat) to 'call for heat'.
    • b) will act like a scheduled timer/temperature TRV and something else will 'call for heat'. Sounds like your plumber used this setting.
    • Most users prefer every room with a Tado TRV to be set to a). The TRV calls the zone controller will 'call for heat' when required.

    If there are mulitple Tado devices in the same room:

    • One of them will be the 'measuring device. Pick one of the two (or more) TRV.
    • With a wireless thermostat and TRV, pick the wireless thermostat. The default is usually the wireless thermostat.
    • Question: Does your room with the wireless thermostat have a TRV on the rad, or not?

    Limits:

    • Maximum of 10 'zones' and 25 devices. With 8 devices, you'll be below both the limits.

    HTH

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