请这里的懂空调暖气的大虾指教

来源: 于 2017-09-22 06:56:06 [旧帖] [给我悄悄话] 本文已被阅读：次

I have question to connect Themstat to Humidifire.

 

Control board “C” to Themstat “C”

Control board “R” to Themstat “R”

 

Themstat “U” to Humidfiier “Blue”  (total 2 blue wire as the inferface)

Themstat “U” to Controlboard “Humidifire”

 

Question is

 

Another blue wire from Humidfire to go “C”  or “R” on Controlboard ?