Ecobee Smart Si - Configuring the Smart Si Thermostat; Equipment Setup

YN/C
W
O/B
GRCRHCY2
W2
AUX
2-stage AC
C
Boiler
C
W
R
Y1
RR
C
Y2
Y1
Y2
G
Air Handler
Smart Si Thermostat
Single stage boiler with air handler, dual stage cool
* Remove RH/RC factory jumper
C terminal to be connected to heating
transformer common
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