Looks like a s plan with no bypass below boiler.
d2 safety relief in overflow pipe... Not to regulations. That would just melt if it discharged.
I would guess the boiler is not wired correctly, more likely an installer fault than a new vaillant boiler playing up already!? Don't be surprised if vaillant charge you for the call out!
d2 safety relief in overflow pipe... Not to regulations. That would just melt if it discharged.
I would guess the boiler is not wired correctly, more likely an installer fault than a new vaillant boiler playing up already!? Don't be surprised if vaillant charge you for the call out!