Ecobee SMART Installation Manual page 9

Two Stage Furnace (Carrier 58MVB) With Two Stage Heat Pump (Duel Fuel)
Equipment Interface
Y
W O/B
G
W2 AUX
R/H
R/C
ACC1
Aux Heat
ACC1r
Stage 2
ACC2
Comp2
ACC2r
ACC3
Dehumidi er
ACC3r
Dual Stage Furnace with Dehumidifier and Two Stage Heat Pump
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.
Equipment Interface
Y
W O/B
G
W2 AUX
R/H
R/C
ACC1
ACC1r
ACC2
ACC2r
ACC3
ACC3r
NOTE factory installed jumper must be removed for this con guration.
Non Powered Accessories will require a jumper from RH | RC to ACC1, ACC2, ACC3 for a 24V feed.
13 Installing The Smart Thermostat
Furnace Heat Pump
W2
O
Y1
Y1
W/W2
W2
Y/Y2
Y2
G R
R
C
Dhum
Humidi er
Com
Hum
24V
C
Humidastat
Dual Transformer – Single Stage Cooling With Boiler
Fan Coil Air Conditioner
Y
24V
G
C
R
C
Boiler
R
C
W
Single Stage Cooling with Boiler
Remove factory installed jumper
Equipment Interface
Y
W O/B
G
W2 AUX
R/H
R/C
ACC1
Comp 2
ACC1r
ACC2
ACC2r
ACC3
ACC3r
NOTE factory installed jumper must be removed for this con guration.
Non Powered Accessories will require a jumper from RH | RC to ACC1, ACC2, ACC3 for a 24V feed.
indicates a jumper. Non-powered accessories require a jumper
Dual Transformer – Dual Stage Cooling With Boiler
Fan Coil Air Conditioner
Y1
Y1
Y2
Y2
G
R
R
C
C
Boiler
R
C
W
Dual Stage Cooling with Boiler
from RH / RC to ACC1, ACC2, ACC3 for a 24V feed.
Installing The Smart Thermostat 14