Recent content by BambooCustard

Yes, an ISTOR. Ho hum. A pump on the manifold would require switched mains at the manifold. Which would be difficult. Or a pump sited behind the boiler where feed to 2nd/3rd floor starts which would be impossible. Am curious about this setup - I'm no expert. Presumably the pump shouldn't...

I have underfloor heating on 3 floors. The boiler is on ground floor. It has an integral circulating pump. The top floor never gets hot. Of course it benefits from hot air rising. Would a pump a stronger than the grundfoss installed in the ISTOR resolve the problem? Regards Paul