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Wiring Tables
Terminal
TH
TH
PS
Plenum sensor
CS
Common S
OS
Outdoor sensor
DE
Dual Energy
CC
Common C
UN
Unoccupied mode input
H
Humidifier (24 Vac / 1 A)
H
D
Dehumidifier (24 Vac / 1 A)
D
R
Power (24 Vac)
C
Y1
Compressor 1 (24 Vac / 1 A)
Y2
Compressor 2 (24 Vac / 1 A)
Y3
Compressor 3 (24 Vac / 1 A)
W1
Auxiliary heat 1 (24 Vac / 1 A)
W2
Auxiliary heat 2 (24 Vac / 1 A)
W3/O/B
Reversing valve (24 Vac / 1 A)
G
Fan (24 Vac / 1A)
L
Fault (24 Vac / 5 mA)
WW
Defrost (24 Vac / 5 mA)
NC
Terminal
Device
TH
Console
TH
PS
Plenum sensor
CS
Common S
OS
Outdoor sensor
DE
CC
Common C
UN
Unoccupied mode input
H
Humidifier (24 Vac / 1 A)
H
D
Dehumidifier (24 Vac / 1 A) Connect the dehumidifier between the D terminals (dry contact)
D
R
Power (24 Vac)
C
Y1
Cooling unit 1 (24 Vac / 1 A)
Y2
Cooling unit 2 (24 Vac / 1 A)
Y3
Cooling unit 3 (24 Vac / 1 A)
W1
Heating unit 1 (24 Vac / 1 A)
W2
Heating unit 2 (24 Vac / 1 A)
W3/O/B
Heating unit 3 (24 Vac / 1 A)
G
Fan (24 Vac / 1 A)
L
WW
NC
TH146-P-U
Device
1H1C
Console
Connect the console between the TH terminals (no polarity)
Connect the plenum sensor between the PS and CS terminals (no polarity)
Common terminal for the plenum sensor and the outdoor sensor
Connect the outdoor sensor between the CS and OS terminals (no polarity)
Connect the dual-register meter between the DE and CC terminals (no polarity)
Common terminal for the dual-energy meter and the unoccupied mode input
Connect a dry contact between the UN and CC terminals (no polarity)
Connect the humidifier between the H terminals (dry contact)
Connect the dehumidifier between the D terminals (dry contact)
√
√
√
√
√
√
√
1H
2H
3H
Connect the console sensor between the TH terminals (no polarity)
Connect the plenum sensor between the PS and CS terminals (no polarity)
Common terminal for both plenum sensor and outdoor sensor
Connect the outdoor sensor between the OS and CS terminals (no polarity)
Common terminal for the unoccupied mode input
Connect a dry contact between UN and R terminals (no polarity)
Connect the humidifier between the H terminals (dry contact)
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
Heat Pump
2H1C
3H1C
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
Not used
HVAC
1C
2C
3C
1H1C 1H2C
Not used
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
Not used
Not used
Not used
2H2C
3H2C
4H2C
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
2H1C 2H2C 2H3C
3H1C
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
400-280-010-B
5/24/07
3H3C
√
√
√
√
√
√
√
√
√
3H2C
3H3C
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
4/12
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