Emerson Sensi ST75, Installation Manual

Page: 8 / 20

8
HEA
T PU
MP S
YS
TEMS
Syst
em
Configur
ation
Thermostat
*
**
*Int
ernal jumper betw
een R
C and RH, l
ocat
ed on back of thermostat.
**C
ommon c
onnection r
equir
ed on Heat
-only
, C
ool-only or Heat Pump s
yst
ems.
HOT 120 V
AC
NEUTRAL
NEUTRAL
24 V
AC
HOT
Dots Indicat
e
Phased
Relationship
Singl
e
Stag
e
Heat Pump
HP1
24 V
olt
(Hot) Cool
24 V
olt
(Hot) Heat
24 V
olt
(C
ommon)
Heat And Cool M
ode
1st Stag
e
(C
om-
pr
essor)
NO
TE: Dual
Fuel Option De-Ener
gizes
Heat M
ode
1st St
age
Blowe
r/
Cir
culat
or
Fa
n
Energized On Call For C
ool
(And Heat If Configur
ed
For El
ectric
Heat)
O
Energized Constantly
in C
ool
M
ode
(F
act
or
y
Default)
B
Energized Constantly
In Heat Mode
(Or
Aux M
ode)
Heat M
ode
1st Stag
e
Heat
Pump “L
”
Terminal Connection
Cool Mode
2nd Stag
e
No
Output
Heat Mode
2nd Stag
e
No
Output
Multi- Stag
e
Heat Pump
HP2