VISIONPRO
®
8000 WITH WI-FI
®
85 33-00096—01
Wiring with the THP9045 Wiring Module (Wire Saver)
The THP9045 Wiring Module is designed to be used with applicable thermostats in which a 24V common is required and there are
not enough wires. The K terminal on the thermostat can be used to operate both the fan and compressor on a single wire, and the
module is designed to receive the signal from the K terminal, split that signal and re-route it to operate the compressor and/or fan
for normal operation. See form 69-2065EFS for additional information.
Fig. 223. Example Wire Saver wiring diagram for 1H/1C conventional application.
Fig. 224. Example Wire Saver wiring diagram for a 3H/2C heat pump application.
THX9321R SUBBASE
G
C
RY
FURNACE
W
W-O/B
Rc
YG C
Honeywell
THP9045A
WIRESAVER
M31302A
O/B
AUX/E
Y
Y2
G
L
NOT
USED
K
U2
U2
U1
U1
C
Rc
R
NOT
USED
W
W2
Y
Y2
G
NOT
USED
NOT
USED
C
Rc
R
U2
U2
U1
U1
K
NOT
USED
HEAT PUMP
CONVENTIONAL
W-O/B
Rc
KC
THX9321R SUBBASE
G
C
O
RY
AIR HANDLER
1
1
Y2
E
MATCH THE WIRES FROM THE HEAT PUMP TO THE AIR HANDLER AS NORMAL.
W-O/B
Rc
YG C
WIRESAVER
M31304A
O/B
W
AUX/E W2
YY
Y2
Y2
GG
L
NOT
USED
NOT
USED
NOT
USED
K
C
Rc
R
U2 U2
U2 U2
U1 U1
U1 U1
K
C
Rc
R
NOT
USED
NOT
USED
HEAT PUMP
CONVENTIONAL
Honeywell THP9045A
1
W-O/B
Rc
KC
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