Nest thermostat installed but no hot water

Discussion in 'Electricians' Talk' started by Denis 00k, Dec 5, 2020.

  1. Denis 00k

    Denis 00k New Member

    I have a y plan system with an additional two port valve because I had changed the hot water water tank to an unvented cylinder, The problem I have is when I installed a nest thermostat I get no hot water but with the two port valve disconnected the hot water works. How can I include the two port valve the system and still have hot water?
     

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