Heat Pump Systems - Honeywell VisionPRO TH8000 Series Installation Manual

Wiring
1H/1C Heat Pump (no auxiliary heat)
R Power [1]
O/B Changeover valve
Y
Compressor relay
G Fan relay
C 24VAC common
S1/S2 Optional outdoor/remote/discharge
sensor
U1/U1 Optional IAQ relay
2H/1C Heat Pump (with auxiliary heat)
L
Equipment monitor
E/Aux Auxiliary/emergency heat relay
R
Power [1]
O/B
Changeover valve
Y Compressor relay
G
Fan relay
C
24VAC common
S1/S2 Optional outdoor/remote/discharge
sensor
U1/U1 Optional IAQ relay
Steam humidifier (or any humidifier with
its own transformer)
R
Power [1]
U1 Humidifier relay
U1 Humidifier relay
Whole house dehumidifier
R Power [1]
U1 Dehumidifier relay
U1
Dehumidifier relay
Whole house powered ventilator
R
Power [1]
U1 Ventilator relay
U1
Ventilator relay
See [notes] below
[1] Power supply. Provide disconnect means and overload protection as required.
[2] Optional 24VAC common connection.
O/B set to control as either O or B in installer setup.
[3]
If L terminal is used, 24VAC common (terminal C) must be connected.
[4]
[5] Heat pump reset (powered continuously when thermostat is set to Em. Heat; system monitor
when set to Heat, Cool, or Off).
[7] Terminals are normally open dry contacts.
[8] Equipment must include dehumidification terminal for low-speed fan.
Wiring guide—heat pump systems
[3]
[2]
[4, 5]
[3]
[2, 4]
Wiring guide—humidification systems
[7]
[7]
Wiring guide—dehumidification systems
[7]
[7]
Wiring guide—ventilation systems
[7]
[7]
VisionPRO
2H/2C Heat Pump (no auxiliary heat)
Y2 Compressor 2 relay
R Power [1]
O/B
Changeover valve
Y Compressor 1 relay
G Fan relay
C
24VAC common
S1/S2 Optional outdoor/remote/discharge
sensor
U1/U1 Optional IAQ relay
3H/2C Heat Pump (with auxiliary heat)
Y2 Compressor 2 relay
L
Equipment monitor
E/Aux Auxiliary/Emergency heat relay
R Power [1]
O/B
Changeover valve
Y
Compressor 1 relay
G Fan relay
C 24VAC common
S1/S2 Optional outdoor/remote/discharge
sensor
U1/U1 Optional IAQ relay
Bypass, flow-through humidifier (or any
humidifier that uses the system trans-
former)
R Power [1]
U1
Field jumper R to U1
U1
Humidifier relay
A/C with low-speed fan
R Power [1]
U1 Field jumper R to U1
U1
Dehumidifier relay
Non-powered ventilator
R
Power [1]
U1 Field jumper R to U1
U1
Ventilator relay
5
TH8000 Series
TM
[3]
[2]
[4, 5]
[3]
[2, 4]
[7]
[7]
[7]
[8]
[7]
69-2389—03