Thanks for the messages.
I also contacted Horstmann and they sent me a conversion table for a number of different thermostats. On closer examination, my Honeywell thermostat is a T6160B model. Their table states that the T6160B should have four wires connected, with 1 being Common, 2 being...
Hi
I am in the process of replacing an old Honeywell room thermostat (no model number but probably about 25 years old) with a digital programmable thermostat from Horstmann (Centaurstat 7).
There are three wires for the existing thermostat (red on 1, blue on 2 and yellow on 3). Reading...