When the boiler is off (HW&CH) the water pressure reads 1bar, when it's in full flow it reaches 2. Having read the servicing instructions it should be 1.5 bar - is this when not in use or when in full flow? Not all rads are heating up so I'm wandering whether I need to add some water to the system?
Much appreciate help on this.
Thanks
Much appreciate help on this.
Thanks