The Efficient Home Forum

Thanks. Sorry for posting similar questions - all clear now.

Why do you need zone valves on the heating side though? If implemented as per Honeywell's design (HR91 or HR92's on all radiators) there is no need for 'zone valves'.

Zoning is the concept Honeywell bring with evohome... Partial zoning is not what evohome was designed to do.


You don't [as per ...

Yes, evohome Controller can be used as a zone thermostat, but I don't personally recommend this.

As for the zone valves, you can leave these in the manually open position and electrically disconnect them.

Personally, I would disconnect any other heating thermostats or programmers as any failures ...

I'm researching options for a new property I'm buying, which has two zone valves.

The problem with evohome is that it hasn't got enough 'levels' of control. It assumes a single physical zone, to which you can ad up to 12 virtual zones - in practice, these will probably correspond to rooms.

It ...

Why not add it in a new zone. Then you can set the towel rail to stay on a bit longer than the bedroom, to dry the towels.

OK, lets cover some basics...

The evohome Installation Guide (https://heatingcontrols.honeywellhome.com/Documents/All/pdf/evohome%20Connected%20Installation.pdf) Page 43 Figure 4 shows a perfect evohome system when using HR92's and how the software on the evohome Controller has been designed to ...

Do I take from the absence of replies that using evohome on an S-plan plus system is not possible?

We are buying a house with two heating zones and hot water.
You state that The evohome Installation Guide page 42 & 43 shows the possible evohome configurations and as you can see S Plan Plus is not in there (hence Figure 4 is recommended with HR92's on all radiators).

LINK

If correct, how ...