Hi. I have a Hive Dual channel receiver that I'd like to install on SIME Friendly Format 100E combi boiler. Boiler manual; http://library.plumbase.co.uk/flipbooks/RE/simefrif100e_22917_t/simefrif100e_22917_t.html Wiring diagrams; https://imgur.com/a/WjWzr The manual says that if a room thermostat is to be used I need to remove the bridge from terminals 22 & 23 (connector TA). It says it should class II EN 60730.1 (clean contact). My intention is to use this connection, and just leave the inbuilt timer set to 'ON'. I've interpreted the wiring diagram to mean that 22 is common and 23 is what needs a connection to request heat. Switching 230v for the thermostat seems wrong to me, but that's what is usual on heating systems isn't it? So my plan is to remove the 22 & 23 bridge from TA, leave 22 unconnected and then connect terminal 4 from the Hive to terminal 23. This way, when the Hive requests heat it will connect live to pin 23 on the boiler. Does that seem correct?