Existing system in 3 bed bungalow is Y-Plan, installed 10 years ago and comprises Wall Star oil fired boiler, indirect vented HW cylinder (on ground floor) and CW 'coffin' tank mounted high in loft space. New system modifications will include changing to S-Plan with three 2-port valves to supply HW, house rads and separate heating zone for integral garage. Will be installing larger 160lt indirect vented HW cylinder and new Grundfos 15/60 pump.
Questions...
As boiler is mounted in loft space (in gable end wall ~2.5m high), the hot feed from the boiler runs along loft ~4m, then down into airing cupboard to pump, which is next to HW cylinder. How much of an issue is feeding the pump from above, i.e. pumping vertically down, as long as pump motor shaft is horizontal?
Although I'm familiar with the general S-plan layout schematic, practically what’s the best / easiest way to plumb the outlet from the pump to the three valves and auto by-pass valve? Anyone got any pics of such a system? Assume all plumbed in 22mm?
Existing system has the feed to the HW cylinder coil in 22mm, but return to boiler in 15mm, is this typical? Was told the return would be better in 22mm as well, but install a gate valve to control return flow, but how? For info, the pipe run (boiler to HW cylinder) is currently ~4m horizontally, but boiler will be moving when extension gets built, and this will take that run to ~10m.
Many thanks!
Questions...
As boiler is mounted in loft space (in gable end wall ~2.5m high), the hot feed from the boiler runs along loft ~4m, then down into airing cupboard to pump, which is next to HW cylinder. How much of an issue is feeding the pump from above, i.e. pumping vertically down, as long as pump motor shaft is horizontal?
Although I'm familiar with the general S-plan layout schematic, practically what’s the best / easiest way to plumb the outlet from the pump to the three valves and auto by-pass valve? Anyone got any pics of such a system? Assume all plumbed in 22mm?
Existing system has the feed to the HW cylinder coil in 22mm, but return to boiler in 15mm, is this typical? Was told the return would be better in 22mm as well, but install a gate valve to control return flow, but how? For info, the pipe run (boiler to HW cylinder) is currently ~4m horizontally, but boiler will be moving when extension gets built, and this will take that run to ~10m.
Many thanks!