Multiple TRVs in one room

Vertigo

How does Tado handle multiple TRVs in one room (with no wall thermostat)? If I set the room temp to 20C, and one TRV measures 18C and the other 24C, will the boiler trigger, and open one radiator, and close the other, or will tado average the numbers and assume the room is at 21C and not trigger and keep both valves closed ?

When adding a wall thermostat to that room, will only the wall thermostat trigger the boiler for that room, or will individual TRVs still do it if any one of them is below target temp? Will all TRVs in the room open and close simultaneously based on the wall thermostat, or will each valve open/close depending on its own measurement?

Im still waiting for my plumber to replace my valves, so I did some tests putting my TRV on top of my existing valve, and the results are sobering; When I put the TRV on the table, it measures fairly accurately compared to my calibrated thermometer. But when I put it where it will be mounted near the radiator, Im getting up to 5C deviation in temperature measurements, with the TRV reporting 26C while in reality its 21C. 😕

Germán

Hello Vertigo,

In every room there's only one Measuring Device (which can be any of the Smart Radiator Thermostats or the Smart Thermostat). If there's a Smart Thermostat in the room, normally is the advised device as it won't be so close to the radiators.

Please find here how would the system work with the combination of the Smart Radiator Thermostats

https://support.tado.com/hc/en-gb/articles/360015468651-How-does-tado-control-radiator-heating-systems-with-a-central-thermostat-

Best regards,

Germán

SamuraiJack

Just bumping this post up. Going back to the original question posted by Vertigo, would you be able to clarify how the dynamics between a room thermostat and multiple TRVs installed in the same room work, please?

I.e. when the room thermostat calls for heat, will all TRVs in the same room open and close simultaneously or will each valve open/close depending on its own measurement?

Kissarmy

From my own experience with the temp sensors set as the room measuring device if I dial up the temp on the temperature sensor within a few seconds I hear each of the 2 TRVs open.

SamuraiJack

Which you would expect from those TRVs linked to that room temperature sensor.

Question is how do those TRVs then operate as the room starts to heat up. Does each TRV then re-adjusts its position based on the temperature measured locally (but still having a reference to the main room sensor) or do they operate in tandem based on the room temperature sensor and then ignore local conditions to the TRV.

Kissarmy

It is my understanding that they act as dumb slaves to the wireless temperature sensor when that is selected as the default temperature measuring device for the room - from experience they both turn off within seconds of each other just like they turn on within seconds of each other.