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VisionPRO
TM
TH8000 Series
3
69-2389—03
ENGLISH
MCR29724
U1
E/AUX
U1
U1
R
U1
MCR29723
U1
U1
E/AUX
U1
U1
R
For 24VAC primary power, connect common
side of transformer to “C” terminal.
Insert supplied batteries for
primary or backup power.
Power options
Push excess wire back into the wall opening. Plug
wall opening with non-flammable insulation.
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
Terminal Designations
Wiring