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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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My boss wants me to change out a Trane BaySens019B with a

Customer Question

My boss wants me to change out a Trane BaySens019B with a wireless thermostat. There are 7 wires hooked to the old one on terminals 7-12 & 14, no corresponding lettering codes. Looking for which number corresponds to letter on the new stat?
JA: Just to clarify, do you think this is a larger HVAC problem, or something specific to the thermostat?
Customer: and install new nest thermosate
JA: Do you plan on doing the work yourself?
Customer: yes
JA: Anything else we should know to help you best?
Customer: can you help me on this regards
Submitted: 12 months ago.
Category: HVAC
Expert:  BillyHvac replied 12 months ago.


My name is Billy.

Is he aware these are 2 totally different thermostats as far as voltage and control?