February 18, 20224 yr i Have recently posted this problem and all responses suggest 3 way valve but only 2 radiators heat when DHW is on even tho heating off. Could it be piping set up incorrectly
February 18, 20224 yr Has it EVER worked properly or has it always been like this? My guess is common return pipe for heating and HW and convection flow when hot water is circulating to the HW tank and only a couple of upstairs radiators getting hot.
February 18, 20224 yr @graham1 It is unhelpful and laborious for you to start another thread to discuss this Already discussed and open here for further input……
February 19, 20224 yr Author 11 hours ago, ProDave said: Has it EVER worked properly or has it always been like this? My guess is common return pipe for heating and HW and convection flow when hot water is circulating to the HW tank and only a couple of upstairs radiators getting hot. Been like this from installation - Only 2 downstairs radiators affected. Not sure if this is the right way to respond!! Any advice appreciated
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