Pipe work location advice

[PeteRH]

Hi,

I am new to this, thanks in advance for any support/help!

In the next few weeks I’ll be moving into a house with a VERY old boiler that I will have a pro replace and move at the same time.

I have done small pipe work jobs, e.g. moving a bathroom around. As the new house only has radiators in half off the rooms a lot of new pipe work will be needed. I was thinking of laying new flow and return pipe work from where the new boiler will be.

My question is whether, as all radiators upstairs will be almost directly above those downstairs, can I put the larger pipe work in between floor and then run 15mm feeder pipes off the main circuit to the rads down and up stairs?

I have attached a rough floor plan, boiler is marked on there and the very rough black lines/marks are the planned rads.

Many thanks! Pete

 

[steadyon]

1. With a new boiler the controls will have to be updated to comply with current regulations.
2. This will in part require separate heating zones for upstairs and down stairs.
3. This will not be possible with downstairs radiators piped from upstairs, unless you use intelligent thermostatic valves on each radiator arranged so that the can shut down the boiler when all calls for heat are satisfied.
4. Also, if piping downstairs with "drops" from upstairs, you need to make sure you can get air out of the system, or downstairs can become airlocked.