Honeywell Home VisionPRO 8000 Manual page 122

®
VISIONPRO 8000 WITH REDLINK™
Typical wiring of a heat pump system with up to four-stage heat and two-stage cool with one transformer.
2
1See guides on following pages for geothermal radiant heat wiring.
2Wire a maximum of 4 sensors using the S1-S4 terminals. S1-S4 terminals can be connected to an indoor sensor, outdoor
sensor, discharge sensor, return sensor, dry contact device to display an alert or an occupancy sensor for remote set-
back..
3L/A terminal sends continuous output when thermostat is set to EM HEAT mode, except when set up for Economizer or
TOD. See "Economizer Module Wiring Diagrams" beginning on page 133.
4Connect wireless adapter to ABCD for extended wireless range.
68-0312—06
EIM
POWER
HEAT
COOL
STATUS
FAN
LEDS
U1
U2
U3
A
B
4
C
D
S4
CONNECT OPTIONAL
S4
SENSORS TO
S3 AND S4 TERMINALS
S3
S3
Fig. 315. EIM wiring guide — heat pump systems.
TO THERMOSTAT
O/B
CHANGEOVER VALVE
HEAT PUMP
O/B
AUX1
AUX1
AUX2
AUX2
Y
L/A
Y2
3
G
L/A
3
1
R
C
CONNECT OPTIONAL
SENSORS TO
SENSORS
S1 AND S2 TERMINALS
2
122
BACKUP HEAT
STAGE 1
BACKUP HEAT
STAGE 2
COMPRESSOR
STAGE 1
COMPRESSOR
STAGE 2
FAN RELAY
COMPRESSOR
MONITOR OR
ZONE PANEL
JUMPERS
AIR HANDLER
TRANSFORMER
24 120
VAC VAC