Recent content by tombell

there was no link wire on the RF2 as it is volts free connection. The PCB power connections on the viessmann are in 2 sections. 1 is the standard Live neutral and Earth, the other is for the boiler controls. When the boiler is delivered it has a jumper between the terminals in this second...

I bought both the receiver and thermostat together... not an issue. The Boiler, as I understand it ( reading the Viessmann install instructions ) is 230v, but no-volt switching required on the circuit. Just really need to know which wire goes to the common and which to the NO terminal...

Firstly, I am new to this forum, so apologies for any errors I make in this post. I have been having a few problems with my viessmann boiler recently, which gas man will be sorting ( once he returns from holiday ) however he did also suggest the old receiver was on its last legs and could do...