Wiring Diagrams - Ecobee SMART Installation Manual

Wiring Diagrams

Below are the Equipment Interface Terminal Labels
Please take note that there is a factory installed jumper
between R/H and R/C.
Equipment Interface
Y
W O/B
G
W2 AUX
R/H
R/C
ACC1
HRV
ACC1r
ACC2
Dehumidi er
ACC2r
ACC3
Humidi er
ACC3r
NOTE factory installed jumper.
Non Powered Accessories will require a jumper from RH | RC to ACC1, ACC2, ACC3 for a 24V feed.
Diagram indicates 24V humidi er terminal. If your furnace control board does not have this, you must use a 110V/24V step down transformer.
9 Installing The Smart Thermostat
24 Vac
Power
System
Line
Y
W O/B
Communications
G
W2 AUX
R/H
R/C
NC
NC
ACC1
IN2-
ACC1r
IN2+
IN1- ACC2
ACC2r
IN1+
ACC3
D- ACC3r
D+
GND
+12V
Single Stage Heat/Cool With 3 Accessories
Furnace
Y
W
G
R
Hum
C
Single Stage Heat/Cool with Thrre Accessories
HRV
Dehumidi er
Humidi er
NOTE Non Powered Accessories will require a jumper from RH | RC to ACC1, ACC2, ACC3 for a 24V feed.
factory installed jumper.
Diagram indicates 24V humidi er terminal. If your furnace control board does not have this, you must use a 110V/24V step down transformer.
Air Conditioner
24V
C
Humidi er
24V
C
HRV
HRV
24V
C
Comp2
Dehumidi er
Humidi er
24V
C
NOTE Indicates jumper. Non Powered Accessories will require a jumper from RH | RC to ACC1, ACC2, ACC3 for a 24V feed.
factory installed jumper.
Diagram indicates 24V humidi er terminal. If your furnace control board does not have this, you must use a 110V/24V step down transformer.
Two Stage Heat/ Single Stage Cool With 3 Accessories
Equipment Interface
Y
W1
W O/B
G
W2
W2 AUX
R/H
R/C
Hum
ACC1
ACC1r
ACC2
ACC2r
ACC3
ACC3r
Dual Stage Heat, Single Stage Cool with Three Accessories
Equipment Interface
Y
W1
W O/B
G
W2
W2 AUX
R/H
R/C
Hum
ACC1
ACC1r
ACC2
ACC2r
ACC3
ACC3r
indicates a jumper. Non-powered accessories require a jumper
from RH / RC to ACC1, ACC2, ACC3 for a 24V feed.
Furnace Air Conditioner
Y1
24V
C
G
Humidi er
R
24V
Y2
C
C
HRV
24V
C
Dehumidi er
24V
C
Two Stage Heat/Cool With 2 Accessories
Furnace Air Conditioner
Y1 Y1
Y2
G R
C
R
Humidi er
Y2
24V
C
C
HRV
24V
C
Dual Stage Heat/Cool with Two Accessories
Installing The Smart Thermostat 10