How to use the Honeywell Home DT4R as a room thermostat in a evohome HR91 & HR92 controlled zone

Richard from The Smart Thermostat Shop.co.uk shows you how to pair the brand new Honeywell Home DT4R wireless room thermostat into a Honeywell Home evohome zone with Honeywell Home evohome HR91 & HR92 smart TRV's.
Products featured in this video...
Honeywell evohome Connected Thermostat Pack (thesmartthermo...)
Honeywell Home DT4R Wireless Thermostat (thesmartthermo...)
Honeywell Home evohome HR91 (thesmartthermo...)
Honeywell Home evohome HR92UK (thesmartthermo...)

[@andybaranowsky]

Amazing video, thanks for that explanation.

[@daviddeans9666]

Great review

[@arjanvndk]

Thanks for the demo. Maybe helpfull to show as well that if there was a previous binding how to clear this. I had to use clr before it would bind again to a zone. The manual is not so easy to follow. But there are some QR codes to find extra info

[@MWPHS]

I have checked with Resideo and this is a production issue where they are testing the thermostats in the factory but not clearing them, so they are effectively coming out 'bound' and you are having to clear them using 'CLr' first. The procedure we have shown is correct and once Resideo have rectified the issues will work fine.

[@jonathanthomson5000]

Is it possible to add the DT4R to an existing zone without having to rebind the TRVs? If a rebind is necessary can it be done without deleting the device/zone?

[@MWPHS]

Yes you can do this. Give tech support a call and they can help you with this - 0300 130 1299 option 3.

[@jonathanthomson5000]

@@MWPHS thanks. My order turned up yesterday and I managed to work it out despite the Ikea-style manual 🤣 Thanks for the super quick delivery. May order a couple more shortly.

[@shaneryan5619]

Thanks for the review, is it possible to mix a different model valve control with the evohome, eg. A nest valve control with honeywell evohome?

[@MWPHS]

No not possible to do this.

[@jaapleffers4514]

Is it possible to set up a room with two radiators with only 1 hr92 as actutor and sensor, and 1 hr91 as actuator for the other radiator? Thanks for your answer

[@theheatingconsultant]

Yes that is possible!

[@MWPHS]

Yes you can do this.

[@beexpressplumbing]

Can the room stat be locked in the same way that the trv head can?

[@MWPHS]

You can temperature limit the range of the temperature sensor (DT4R) bound to an evohome zone, but you cannot lock it from adjustment like you can with HR91's or HR92's.

[@markjoseph4646]

Hi, do the TRVs monitor the temperature of the room or the water passing through the radiator?

[@theheatingconsultant]

When the HR91 or HR92 is bound as an actuator, it simply controls the flow of water into the radiator. They can be bound as the sensor and then they control the flow of water and act as a room sensor.

[@MWPHS]

The smart TRV's detect air temperature.