Install Instructions

© COPYRIGHT 2020 PECO, INC. ALL RIGHTS RESERVED. P/N 73676 3220-2372 REV 04
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Wiring Diagram: ON-OFF Operation Wiring Diagram: Three-Wire Floating Operation
24 VAC 2
24 VAC 2
24 VAC 1 (UNSWITCHED)
OPTIONAL REMOTE PROBE
OPTIONAL PIPE SENSOR
DC/ SENSOR COMMON
24
24
24
Y1
W1
Y2
W2
G
G1
YD
WD
GD
S1
S2
SC
Unused
4A
Unused
4B
Unused
4C
HEAT STAGE 2
COOL STAGE 2
OR FAN MED
HEAT STAGE 1
COOL STAGE 1
FAN HI
24 VAC
XFMR
FAN LO OR
DAMPER
0-10V OR
4-20mA COOL
0-10V OR
4-20mA HEAT
0-10V OR
4-20mA FAN
24 VAC 2
24 VAC 2
24 VAC 1 (UNSWITCHED)
OPTIONAL REMOTE PROBE
OPTIONAL PIPE SENSOR
DC/ SENSOR COMMON
24
24
24
Y1
W1
Y2
W2
G
G1
YD
WD
GD
S1
S2
SC
Unused
4A
Unused
4B
Unused
4C
HEAT CLOSE
COOL CLOSE
OR FAN MED
HEAT OPEN
COOL OPEN
FAN HI
FAN LO OR
DAMPER
0-10V OR
4-20mA COOL
0-10V OR
4-20mA HEAT
0-10V OR
4-20mA FAN
24 VAC
XFMR