Heating zone

Discussion in 'Plumbers' Talk' started by mrclox, Feb 21, 2021.

  1. mrclox

    mrclox New Member

    I have a single pipe CH system, vented (radiators have tails, water does NOT go through each rad in turn!) with three floors of radiators.
    I have installed a bypass pipe from the last rad on the ground floor to the return to the boiler and a zone valve so efffectively giving me the choice to heat the whole house or just the ground floor.
    This has worked fine except that the rads on the upper 2 floors still get warm to a degree.
    My question is..
    if i now install a zone valve on the pipe leading to the first floor as well in order to stop the rads heating up at all above ground floor, would this work as i predict?
    Is it ok that the system only has access to the feed and expansion via the return pipe from upstairs as the flow to upstairs is cut off.

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