I am wanting to upgrade this Duo Therm rsv420k62 thermostat to a digital Honeywell RTH8580WF.
The basic thermostat color codes pic may define all of my wires in the Duo Therm pic except for the black wire labeled as H.
I came across the manual for this thermostat, and I believe the H black wire is for high fan or is it?
The RH and W are for the furnace.
How do I hook all of my wires to a Honeywell RTH8580WF thermostat?
The basic thermostat color codes pic may define all of my wires in the Duo Therm pic except for the black wire labeled as H.
I came across the manual for this thermostat, and I believe the H black wire is for high fan or is it?
The RH and W are for the furnace.
How do I hook all of my wires to a Honeywell RTH8580WF thermostat?