Can anyone enlighten me as to what is meant by a volt free contact?
I was looking through an instruction manual that came with a new central heating boiler, and I came across the following passage:
I was looking through an instruction manual that came with a new central heating boiler, and I came across the following passage:
"If the boiler is to be controlled by a time clock, this must be a VOLT FREE CONTACT time clock only. The volt free contact time clock is to be connected to the control panel by replacing the “external switch link” from the connectors on the board with the cable from the timer. The connection point is shown as “0 volt” on the wiring diagram."
Thanks,
Thanks,