hvactechfw's Avatar

Join Date: Jan 2011
Posts: 6,245

01-22-12, 06:27 PM   #8 (permalink)  
Can you provide me with a link to a installation manual. The pdf file on the Nest website is corrupted. You implied that nest is compatible with 2 wire systems. If you must provide 24V to the thermostat then that is not possible with only 2 wires as then you are left with no signal wire back to the furnace. HOW DO YOU KNOW YOU HAVE A MILLIVOLT SYSTEM?