Honeywell VisionPRO 8000 Product Data page 85

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.
O/B
AUX/E
Y
Y2
G
L
K
NOT
USED
Fig. 223. Example Wire Saver wiring diagram for 1H/1C conventional application.
O/B
AUX/E
Y
Y2
G
L
K
NOT
USED
1
MATCH THE WIRES FROM THE HEAT PUMP TO THE AIR HANDLER AS NORMAL.
Fig. 224. Example Wire Saver wiring diagram for a 3H/2C heat pump application.
THX9321R SUBBASE
CONVENTIONAL
NOT
W
USED
C
W2
Y
Y2
G
NOT
USED
K
NOT
USED
HEAT PUMP
THX9321R SUBBASE
CONVENTIONAL
NOT
W
USED
W2
Y
1
Y2
G
NOT
USED
K
NOT
USED
HEAT PUMP
NOT
USED
C
Rc Rc
R R
U1 U1
U1 U1
U2 U2
U2 U2
NOT
USED
C C
Rc Rc
R R
U1 U1
U1 U1
U2 U2
U2 U2
85
®
VISIONPRO 8000 WITH WI-FI
WIRESAVER
Rc K C W-O/B
Honeywell
THP9045A
Rc Y G C W-O/B
G C W
R Y
FURNACE
M31302A
WIRESAVER
Rc K C W-O/B
Honeywell
THP9045A
Rc Y G C W-O/B
1
G C O
R Y Y2 E
AIR HANDLER
M31304A
®
33-00096—01