Changing Honeywell Thermostat To Nest
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Additionally, the digital display is brilliant with high quality and illuminates the current weather, temperature, or time. Compared to the google nest thermostat, the honeywell t9 is tinier, measuring just 2. 6 x 2. 6 x 0. 77 inches. It, too, features a touchscreen display but is available exclusively in white. The blue wire is used as y, the demand for cool.
You do not have a c wire. You cannot easily use a nest thermostat with this cable. You need 5 wires. The advice, and photo, you got from nest support is wrong. If it's not too difficult, the solution is to pull a new cable with more conductors. The wires from the st9100c then go to the new heat link terminals that have the same function. St n = nest n st l = nest l st 4 = nest 3 heating call for heat link nest l and 2 heating common then the bdr 91 needs to be decommissioned. The easiest way is to leave the bdr91 wired in and add a wire link between terminals a & b. Following these simple steps.