Hi all
Following on from my recent post on boiler selection, Worcester vs Alpha, I have contacted the technical help at both companies. My current heating system has the pump on the return to the boiler. Both companies claim this is OK for a sealed system but not acceptable for vented (Alpha actually said it was non-preferred for sealed but acceptable).
Anyone understand why this might be? The boiler will see max pump pressure/flow as flow will not be passing around system before reaching the boiler. Can't believe that this will have such a marked effect though.
Any ideas?
Phil