Help Wiring Gen 1 from Lennox ITT Controls and instruments.

[rsheffey]

Need some assistnaace seting up wires in Gen 1 Nest

Previsous wiring
ITT Controls and Instruments Catalog No. T90H110A137

Wires labled G F C H V
Colors:

G Green
F Red
C Blue
H Yellow
V White

Air conditioning and heat come though forced air, with Gas Heating.

Apperantly I cant send a pic on here?

[zoeuvre]

Hi rsheffey, 

Thanks for posting here in the Community forum and for showing interest in our Nest Thermostats. Non-standard labels of F, H, and V means that your system is proprietary. Proprietary systems aren’t compatible with Google Nest Thermostats. However, some proprietary systems can be rewired by a pro installer to be compatible.

Let us know if that helps.

Best,

Zoe