Wiring Uwp - Honeywell Home T10 Product Data

5
6
Use 2x
supplied
screws
#6 5/8"
8
Terminal Designations
Conventional Systems
Terminal
S/S Input for a wired sensor
Y Compressor Stage 1
Y2 Compressor Stage 2
G Fan Relay
C 24VAC Common wire from secondary side of
cooling transformer (if 2 transformers)
K* Connect to K on C-wire adapter
U/U** Relay for humidifier, dehumidifier, or ventilator U/U**
A
W Heat Stage 1
W2 Heat Stage 2
R 24 VAC Heating transformer
Rc 24 VAC Cooling transformer
* The THP9045A C-wire adapter is used on heat/cool systems when you only have four wires at the thermostat and you need an
extra wire for a common wire. Use the K terminal in place of the Y and G terminals on conventional or heat pump systems to
provide control of the fan and the compressor through a single wire the unused wire then becomes your common wire. See
THP9045 instructions for more information.
** See note on Wiring U terminals on the following page.
33-00462—05
7
M37787
Fig. 11.
Table 7. Terminals on T10 or T10+ Without EIM
Description

Wiring UWP

NOTE: If T10+ & EIM are used, UWP only wires to R and C
of a 24 VAC power supply. Usually R and C from
UWP goes to R & C at upper right of EIM.
Push down on the tabs to put the wires into the inner holes of
their corresponding terminals on the UWP (one wire per
terminal) until they are firmly in place.
Gently tug on the wires to verify they are secure.
If you need to release the wires again, push down the terminal
tabs on the sides of the UWP. This wiring is just an example,
yours may vary.
Heat Pump Systems
Terminal
S/S Sensor options in charts on page 4
Y Compressor Stage 1
Y2 Compressor Stage 2
G Fan Relay
C 24VAC Common wire from secondary side of cooling
transformer
K* Connect to K on C-wire adapter
Relay for humidifier, dehumidifier, or ventilator
L/A Connect to compressor monitor
O/B Changeover valve for heat pumps
AUX Backup Heat
E Emergency Heat
R 24 VAC Heating transformer
Rc 24 VAC Cooling transformer
8
M37788
Fig. 12.
Description