Hi.
I have purchased /NEW boxed/ CM907 over amazon and need a help.
From my boiler ISAR HE30 are comeing out 5 wires :
* brown / blue / gree-yellow -- main power for old Danfos
and
* from L1 in boiler is RED which is LIVE wire / from L2 in boiler is BLACK which is SWITCH wire
Here is how...