Rockycmt
Member
So I am looking to add a wifi Honeywell thermostat to my first zone. Currently it is a simple 2 wire thermostat for a Heat call only. It is a hot water hydronic monoflow loop controlled by a zone valve. Can I simply add a 3rd wire from the 24v transformer to provide the C wire that the thermostat requires?
So use the two existing to control the relay on the zone valve and the new C wire will give the unit the power it needs to do the computer stuff.
So use the two existing to control the relay on the zone valve and the new C wire will give the unit the power it needs to do the computer stuff.