Removing an old CH and HW system

[allenvb]

Dear all,
I am looking to remove an old CH and HW system in my house (but want to leave the rads and pipework)

Coming out of the boiler there is 2 28mm pipes that disapear under in the void between floor and ceiling.

1) Can anyone tell me what these pipes are?
2) Are these the flow and return to the rads or do they feed water to the HW system?
3) There is a SH pump and 2 motorised valves near the cylinder, can i cut and cap these?
4) What do I need to do to remove the old cylinder?

AS much info as you can provide would be very helpful?

Thanks

V

 

[Softus]

Dear all,
I am looking to remove an old CH and HW system in my house (but want to leave the rads and pipework)

Coming out of the boiler there is 2 28mm pipes that disapear under in the void between floor and ceiling.

1) Can anyone tell me what these pipes are?

If only two pipes connect to the boiler, then one is the flow and the other the return. If they are both 28mm, then it's possible that the system used to be gravity and is now fully pumped.

2) Are these the flow and return to the rads or do they feed water to the HW system?

Depending on what you mean by "feed water", they might do neither. There is some information in the reference topics that you might find useful, regarding indirect systems.

3) There is a SH pump and 2 motorised valves near the cylinder, can i cut and cap these?

I don't think I understand the question. You can cut any of the pipes once the system is isolate and/or drained.

4) What do I need to do to remove the old cylinder?

Isolate all pipework that lead to it, then drain it, and drain the primary circuit, then cut the pipework (or undo all the unions) and remove it. if it's heavily scaled then you might have to cut the top open and hack out some of the scale before you can lift it.

Any more advice would have to be based on more information. For example, what it your overriding objective with this whole exercise?