Interesting, what make/ model is that? Just curious.and it has an external pump.
Sorry, I meant the boiler.Walrus TQ400
I have the same one - it's a booster pump, not a circulating pump. This was my confusion too.Walrus TQ400
That's interesting, as that one has an internal Grudnfos circulation pump on the hot water circuit.Baxi 600 is the boiler.