Carrier 38EYA Installation And Start-Up Instructions Manual page 7

CARRIER
PROGRAMMABLE
THERMOSTAT
MODEL HP
R
24 VAC HOT
INDOOR FAN G
HEAT STAGE 2 W/W1
COOL/HEAT
Y/Y2
STAGE 1
RVS COOLING O/W2
NOT USED Y1/W2
24 VAC COM C
NOT USED B
*
IF AVAILABLE
L
TROUBLE
S1
OPTIONAL
OUTDOOR
SENSOR
S2
CONNECTION
CARRIER
PROGRAMMABLE
THERMOSTAT
MODEL HP
24 VAC HOT R
EHR
INDOOR FAN G
HEAT STAGE 2 W/W1
COOL/HEAT
Y/Y2
STAGE 1
RVS COOLING O/W2
EHR
NOT USED Y1/W2
24 VAC COM C
EHR
NOT USED B
L
TROUBLE
S1
OPTIONAL
OUTDOOR
SENSOR
S2
CONNECTION
NOTE: Remove wires from crimp nut in indoor fan coil
when installing outdoor thermostats.
IMPORTANT: When using outdoor thermostats, W 2 must be
energized when requesting supplemental heat.
Fig. 12—Typical 24-v Circuit Connections using Carrier Model HP Thermostat with Fan Coils and No Outdoor
Thermostat, 1 Outdoor Thermostat, or 2 Outdoor Thermostats
FA, FB, FX HEAT
PUMP
FAN COIL
R
R
G
*
W2 W2
*
E
*
W3
Y
O
C C
HEAT OUTDOOR
FA, FB, FX
FAN COIL PUMP THERMOSTATS
ODT
W3
R
R
G
W2
W2
Y
O
ODT
E
C C
CARRIER
PROGRAMMABLE
THERMOSTAT
MODEL HP
24 VAC HOT R
INDOOR FAN G
HEAT STAGE 2 W/W1
COOL/HEAT
Y/Y2
STAGE 1
RVS COOLING O/W2
NOT USED Y1/W2
24 VAC COM C
NOT USED B
L
TROUBLE
S1
OPTIONAL
OUTDOOR
SENSOR
S2
CONNECTION
A97561
NOTE: Remove wires from crimp nut in indoor fan coil
when installing outdoor thermostat.
IMPORTANT: When using outdoor thermostat, W 2 must be
energized when requesting supplemental heat.
TWO
A97563
7
FA, FB, FX HEAT
FAN COIL PUMP
W3
R
G
W2
E
C
CARRIER
PROGRAMMABLE
THERMOSTAT FV4A
FAN COIL
MODEL HP
DH
R
24 VAC HOT
R
INDOOR FAN G
G
HEAT STAGE 2 W/W1
W1
COOL/HEAT
Y/Y2
STAGE 1
W2
RVS COOLING O/W2
Y/Y2
O
NOT USED Y1/W2
24 VAC COM C C
NOT USED B Y1
TROUBLE L
S1
OPTIONAL
OUTDOOR
SENSOR
S2
CONNECTION
ONE
OUTDOOR
THERMOSTAT
R
ODT
W2
Y
O
C
A97562
HEAT
PUMP
J1 JUMPER
R
W2
J2 JUMPER
Y
O
C
A97564