LAARS FT Series Boiler Integration with Google Nest Thermostats.

LAARS FT Series Boiler Integration with Google Nest Thermostats.

LAARS FT Series Integration with Google Nest Thermostats.

Attached is the wiring diagram for Google NEST Thermostat with  Laars FTHW, FTCW, FTHF wall hung and floor boilers. 

*Please note that the FTHW and the FTHW DO NOT HAVE 24v output terminals wherein the FTHF DOES have 24v output terminals to power the thermostat wifi capabilities * 
In this situation for FTHW, FTCW we suggest the use of a *Common Maker* Relay to power the thermostat wifi capabilities and when only two conductors are available in the wall cavity. 

Wiring diagrams are attached for the FTHF.

Additional wiring diagrams are available on the GOOGLE NEST website.