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Rjcsjc62 · 09-29-2009, 06:44 PM

Basic mechanical logic should be that:

Automatic = controlled by the thermostat automatically

Manual = Control valve turns off (fails open) therefore it is controlled by the isolation valve, manually.

09-29-2009, 06:44 PM	#5
Rjcsjc62 Crash and Bang Winger Join Date: Aug 2009 Exp:	Basic mechanical logic should be that: Automatic = controlled by the thermostat automatically Manual = Control valve turns off (fails open) therefore it is controlled by the isolation valve, manually.