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I have a fully pumped s-plan vented system, with hot water cyl. and 6 rads. I'm trying to understand the layout and am confused about two extra pipes that go into the top of the boiler - a Thorn Olympic.
There are 5 pipes in total, as follows -
15mm gas pipe to bottom of boiler
28mm flow to top of boiler
28mm return to top of boiler
15mm pipe to top of boiler - ?
22mm pipe to top of boiler - ?
Can anyone tell me what the last 2 pipes may be for? It's hard to identify them, as all the pipes run away from the boiler at head height along the wall before vanishing upstairs in the floor to rads and then loft tanks 2 floors up. Some of the pipes run in voids in walls. The only thing that's on the ground floor near the boiler is the hot water cylinder.
Thanks for any help.
There are 5 pipes in total, as follows -
15mm gas pipe to bottom of boiler
28mm flow to top of boiler
28mm return to top of boiler
15mm pipe to top of boiler - ?
22mm pipe to top of boiler - ?
Can anyone tell me what the last 2 pipes may be for? It's hard to identify them, as all the pipes run away from the boiler at head height along the wall before vanishing upstairs in the floor to rads and then loft tanks 2 floors up. Some of the pipes run in voids in walls. The only thing that's on the ground floor near the boiler is the hot water cylinder.
Thanks for any help.