Sensi
TM
Wi-Fi Programmable Thermostat | INSTALLATION GUIDE
13
NOTES
Heat Pump Systems
Single Stage or Multi-Stage Conventional System with Single Transformer
*Internal jumper between RC
and RH, located on back of thermostat above battery compartment.
**Common connection required for Heat
- only or Cool
-
only systems.
***Thermostat wiring does not follow a standardized color code. Label thermostat wires before removing old thermostat from the wall.
HOT
HOT
NEUTRAL
24 VAC
120 VAC
NEUTRAL
Single
stage
AC1
GA1
EL1
24 Volt
(Hot)
Cool
24 Volt
(Hot)
Heat
24 Volt
(Common)
Cool
Mode 1
st
stage
No
output
Heat
Mode 1
st
stage
No
output
Blower /
circulator fan
energized on
call for cool
(and heat if
configured
for electric
heat)
O
Energized
constantly
in Cool
Mode
B
Energized
constantly
in Heat
Mode (or
Aux Mode)
Heat Pump
“L” terminal
connection
Multi-
stage
AC2
GA2
EL2
Cool
Mode 2
nd
stage
Heat
Mode 2
nd
stage
*
SYSTEM
CONFIGURATION
THERMOSTAT
C**
RC
RH
G
W2
W/E
Y2
L
O/B
Y
Dots indicate
phase
relationship.
Heat Pump Systems
*Internal jumper between RC
and RH, located on back of thermostat above battery compartment.
**Common connection required on Heat
- only, Cool-only or Heat Pump systems.
***Thermostat wiring does not follow a standardized color code. Label thermostat wires before removing old thermostat from the wall.
HOT
HOT
NEUTRAL
24 VAC
120 VAC
NEUTRAL
Single
stage
Heat
Pump
HP1
24 Volt
(Hot)
Cool
24 Volt
(Hot)
Heat
24 Volt
(Common)
Heat and
Cool
Mode 1
st
stage
(compres-
sor)
NOTE: Dual
Fuel option
de-energizes
Heat Mode
1
st
stage
No
output
Heat
Mode 1
st
stage
No
output
Blower /
circulator fan
energized on
call for cool
(and heat if
configured
for electric
heat)
O
Energized
constantly in
Cool Mode
(Factory
Default)
B
Energized
constantly in
Heat Mode
(or Aux
Mode)
Heat Pump
“L” terminal
connection
Multi-
stage
Heat
Pump
HP2
Cool
Mode
2
nd
stage
Heat
Mode 2
nd
stage
*
SYSTEM
CONFIGURATION
THERMOSTAT
C**
RC
RH
G
W2
W/E
Y2
L
O/B
Y
Dots indicate
phase
relationship.
