Zone valves, do they go on the return side or the supply side on two zone system? [Archive]

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gardenworks30

Oct 20, 2010, 08:05 PM

ma0641

Oct 21, 2010, 06:22 AM

They are installed on the supply side. If they were on the return side, you would still get air to the rooms but no return air. What type control panel are you using?