This is my first query so please try to be tolerant of an old man!I have just replaced an old solid fuel Rayburne (hot water and cooking -open vented direct cylinder) with a new one (216SFW) with indirect cylinder serving a single radiator and after researching the web have connected the pump in the flow (after the cold supply (15mm) and the vent pipe (22mm) 10mm apart). When the stove is burning well the expansion tank seems to get preference is qite warm and very periodically receives what sounds like a release (venting?) of air. The flow and return are in 28mm (both less than 2M in length) and the hot water system is nowhere near as efficient as the poor, battered old thing sitting out on my drive.The requirement of vent O/L needing to be at least 1.33Xhead is not mentioned in web info. (head is 1M and vent is over 1.3M).
Any advice will be much appreciated.because I anticipate a reaction to noise from my next door neighbour.Be assured that it is not my stomach though it has a familiar ring to it.
