On Wed, 29 Nov 2006 13:49:21 -0600, Chris Friesen
wrote:


I'll try this. I forgot to mention there's also 3 white wires 'nutted
together in the back of the box as well. Don't know if that makes a
difference.

Warning...the following makes sense electrically, but I'm not sure if it
is acceptable to code. I'd appreciate it if someone else could verify.

Unless the thermostat does something "intelligent" to monitor load, you
should be able to treat the new thermostat as a single pole switch, same
as your old one. This would switch only one side of your heater,
leaving the other hot all the time.

Take the single black wire connected to the black thermostat wire, and
hook it up to the inner black wire. Insulate the end of the outer black
wire--this will be live when the heat is on.

Split the two black wires hooked to the old red wire, connect the one
going to the heater with the outer red wire, and the one going to the
supply to the inner red wire.

Chris