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View Full Version : 3 Zone Switching Relay With Optional Priority


hawk31
May 1, 2009, 03:55 AM
I am new to this site and don't know anything about HVAC electrical switching relay with priority for a gas furnace. My question is; If a switching relay with 3 zones is installed on a gas boiler what exactly does it do? For example If you give it priority to heat zones 2 and 3 does it bypass zone 1 completely and render the thermostat control in zone 1 inoperative?

tkrussell
May 1, 2009, 05:20 AM
>>>>>>Copied to HVAC<<<<<<