Register                
Results 1 to 2 of 2

Thread: Is C common present in White-Rodgers model 50A51-495?

  1. #1
    Junior Member

    User Info Menu

    Is C common present in White-Rodgers model 50A51-495?

    I am looking to upgrade my thermostat to a wifi model and would greatly appreciate some help determining if I have the "C" connection needed to power the thermostat. Attached is a picture of the wires at the thermostat. There is a blue wire at the thermostat, however, it is not connected to anything. Also attached is a picture of the White-Rodgers model 50A51-495 and the wires attached to it. The blue wire is not connected to anything. Any input on whether I have a C connection and how to connect it would be much appreciated.

    Also, any idea why there are two sets of red and white wires when only one set is coming out of the wall at the thermostat?

    Thank you in advance for your help.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	IMG_3881.jpg 
Views:	90 
Size:	80.0 KB 
ID:	1295   Click image for larger version. 

Name:	IMG_3882.jpg 
Views:	98 
Size:	95.6 KB 
ID:	1296   Click image for larger version. 

Name:	IMG_3883.jpg 
Views:	114 
Size:	87.4 KB 
ID:	1297  

  2. #2
    Administrator

    User Info Menu

    The B terminal on the White-Rodgers model 50A51-495 is the common terminal.








    Quote Originally Posted by estein9 View Post
    Also, any idea why there are two sets of red and white wires when only one set is coming out of the wall at the thermostat?
    The three conductor thermostat wire connected to the White-Rodgers model 50A51-495 that has the red connected to the Y terminal and the white wire connected to the B terminal is for the outdoor unit.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •