My combi boiler is connected to an FCU that joins the ring main. All
well and good and proper. Now I have a HC60 relay unit that needs
connecting to the boiler. It is the receiver for the CM67 RF
My question is, can I take a connection from the FCU to the HC60, so
that both the boiler and the relay work from the same FCU. It means
that if the switch is off, neither the boiler nor the relay/thermostat
will operate but that's OK because we wont need one without the other
Schematically this will look like...
|----------------HC60 Relay/CM67 Thermostat
Otherwise I'll have to break into the ring and add in an extra FCU
for the relay, which seems to be a bit over the top to me.