I need to move a central heating pipe a few feet and wanted to check
that I'd be doing the correct thing if I attempt it myself. The pipe
runs from the upstairs boiler, under the bedroom floor and down the
gap between the masonry and plasterboard of a dry lined wall to the
radiator downstairs. I've attempted to lift the floorboards in the
bedroom but unfortunatly, they are 7 foot tongue and groove boards and
short of cutting through them, getting them up will be a nightmare
(last board installed and skirting board is fitted over the top of
it). The alternative I've thought of is to cut a hole in the
plasterboard wall downstairs, cut the pipe near the top (will have to
be with a hack saw as it will be too close to the masonry to use a
pipe cutter), put an elbow joint in and connect pipe off at a 90degree
angle to the current position, then another elbow down and another
across, join back up to the original pipe at the bottom using another
elbow, ie

Current
|
|
|
|
|
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New
|
-----
|
----|
|

I had planned on using pre-soldered joints to do this and the
plasterwork shouldn't be a problem as the work going on which has
caused this will hopefully repair it. Obviously, I need to drain the
system first, deburr the pipes and clip the pipe to the wall. Will
the pipes be dry enough to solder?

The exposed pipe to the radiator is 10mm microbore, but looking at the
hot water tank, it's fed by 15mm, so presumably there is a 15-10
converter somewhere down the line, I've assumed this is going to be
close to the point at which the microbore exits the wall and joins to
the radiator. I assume it's the pipe down from the boiler to the
radiator as the valve is on that side of the radiator.

Any problems with this approach? Tips appreciated.

Thanks in advance