I'm trying to replace the built-in mechanical thermostat on an old Fasco Industries 8- foot, 240 volt electric baseboard heater with a programmable line voltage thermostat, either a Honeywell CT1950 or an Aube Technologies TH106. Problem is I'm supposed to choose between 2 programmable thermostats - the Honeywell CT1950A which is for 2 wires or the Honeywell CT1950B which is for 4 wires, and I have no idea which one I need.
Questions:
- Is the CT1950A or B just one thermostat that can be wired in 2 different ways, or are we talking 2 different thermostats altogether?
- In any case, how can I tell if I need a 2-wire thermostat or a
- 2 red wires going in and 2 red wires coming out. I have not traced where these wires going in and out of the existing thermostat are coming from.
As you can tell, I am really electrically challenged, so please pardon me if the question sounds stupid. But I really have a problem understanding electrician's English - when they say 2-wire or 4-wire, are they talking about the wires coming out of the wall or the wires coming out of the thermostat?
Any help will again be appreciated. Thanks.