The Efficient Home Forum

Hopefully my other two zone valve which I am hoping is designed to send water to my underfloor heating is okay to be bound via adding a "room" zone and defining the BDR91 as a two port zone valve. This is the valve that I think has failed as despite the actuator and the pump going green it supplies ...

So, I think my first mistake might be to bind the BDR91 that supplies to the cylinder as a "two port zone". I think this needs to be a "heating only valve" otherwise the boiler gets called too much almost irrespective of the bound cylinder thermostat. If anyone who knows could confirm that would be ...

I have an evohome system with three honeywell actuators.
It looks like one is attached to the boiler and when I bind this my remote room radiators seem to control the boiler fine.

I then have an underfloor heating system with a pump and a 2 port zone valve and wireless room thermostat.
I finally ...