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I have three zones on the hot water boiler. One zone is a in floor radiant heat with a mixing valve and pump. When just the in floor zone is calling for heat both pumps are running but very little water is being pumped by the main pump do to the mixing valve. Is this a problem?
I’m also having trouble keeping the radiant floor loop cool enough. The mixing valve is set at 110° but I’m seeing output as high as 140°. Is the valve bad or is the dual pump setup causing this problem?
Pictures here: https://photos.app.goo.gl/7mnVeyxvDJnR84446