Honeywell VisionPRO® TH8000 Series Installation Manual

About Honeywell VisionPRO® TH8000 Series Installation Manual

This manual covers the following models

  • TH8321U1097: For up to 3 Heat/2 Cool heat pump or up to 2 Heat/2 Cool conventional systems with dehumidification, humidification, or ventilation (Pull thermostat from wallplate and turn over to find model number). 
  • Honeywell 8000 installation manual Must be installed by a trained, experienced technician Read these instructions carefully. Failure to follow these instructions can damage the product or cause a hazardous condition.

Honeywell 8000 Wiring installation

Honeywell 8000 Wiring installation

Honeywell 8000 Terminal Designations

Conventional Terminal Letters:

R System power. Connect to secondary side of system transformer.
C Common wire from secondary side of transformer.
W 1st stage heat relay.
W2 2nd stage heat relay.
Y 1st stage compressor contactor.
Y2 2nd stage compressor contactor.
G Fan relay.
S1/S2 Optional outdoor/remote/discharge sensor.
U1/U1 Optional IAQ device

Heat Pump Terminal Letters:

R System power. Connect to secondary side of system transformer.
C Common wire from secondary side of system transformer.
Y 1st stage compressor contactor.
Y2 2nd stage compressor contactor.
E/Aux Auxiliary/Emergency heat relay.
G Fan relay.
L Heat pump reset (powered continuously when System is set to Em Heat; system monitor when set to Heat, Cool or Off).
O/B Changeover valve for heat pumps.
S1/S2 Optional outdoor/remote/discharge sensor.
U1/U1 Optional IAQ device

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Honeywell VisionPRO® TH8000 Series Installation Manual