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Idiomas disponibles
EIM wiring guide — conventional systems
Typical wiring of a conventional system with up to 3-stage heat and 2-stage cool with
one transformer.
STATUS
CONNECT OPTIONAL
SENSORS TO
S3 AND S4 TERMINALS
2
1
See guides on following pages for thermostat wiring and geothermal radiant heat
wiring.
2
Wire 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 setback.
3
Remove jumper(s) if using separate transformers.
See Economizer wiring section.
4
5
Connect wireless adapter to ABCD for extended wireless range.
NOTE:
See following pages for additional thermostat wiring guidelines for heat
pumps, geothermal systems and optional Economizer.
EIM
POWER
HEAT
COOL
FAN
LEDS
U1
U2
U3
A
B
5
C
D
S4
S4
S3
S3
TO THERMOSTAT
CONV
4
A
1
SENSORS
6
FURNACE
TRANSFORMER
R
24
120
C
VAC
VAC
HEAT STAGE 1
W
HEAT STAGE 2
W2
W3
HEAT STAGE 3
G
FAN
COMPRESSOR
Y
STAGE 1
COMPRESSOR
Y2
STAGE 2
3
JUMPERS
CONNECT OPTIONAL
SENSORS TO
S1 AND S2 TERMINALS
2
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