Google should add this instruction in the book to connect power adaptor WITHOUT a C on the furnace.

[SBK1]

this page takes you to how to wire the power adaptor from another Google threadi found.

you need a $15 24V transformer.

It was posted by "Patrick_Caezza" - thanks for showing this simple procedure!

Patrick_Caezza

[Jhonleanmel]

Hey SBK1,

We appreciate your interest and we're always looking for ways to improve and we'll take it as feedback.

I also suggest that you send feedback by following this link. Let me know if you have other questions or concerns, otherwise I’ll be locking this thread after 24 hours. 

Best,