Cut Sheet

SPECIFICATION SUBMITTAL Page
Job Name:
Job Number:
Model Numbers:
369974a 7 11.05.15
ThermostatL-HWLV2-WIFI
LutronR
Conventional System Heat Pump
Terminal Description Terminal Description
C Common wire from secondary side of
cooling transformer (if there are two
transformers).
C Common wire from secondary side of
cooling transformer.
Rc
1
Cooling power Rc Cooling power
R
1
Heating power R Heating power
W Heat, Stage 1 O/B Changeover valve for heat pumps.
W2 Heat, Stage 2 AUX-E Backup Heat/Emergency Heat
Y Compressor, Stage 1 Y Compressor, Stage 1
Y2 Compressor, Stage 2 Y2 Compressor, Stage 2
G Fan Relay G Fan Relay
A Connect to Economizer Module or
Lighting Panel (TOD).
L/A Connect to Compressor Monitor,
Zone Panel, Economizer Module or
Lighting Panel (TOD).
U1 / U1 Universal relay for humidification,
dehumidification, ventilation, or a stage
of heating/cooling.
U1 / U1 Universal relay for humidification,
dehumidification, ventilation, or a
stage of heating/cooling.
S1 / S1 Universal input for a wired indoor,
outdoor or discharge sensor.
S1 / S1 Universal input for a wired indoor,
outdoor or discharge sensor.
K
2
Connect to K on Wire Saver module. K
2
Connect to K on Wire Saver module.
1
Remove factory-installed jumper for two-transformer systems.
2
The HoneywellR THP9045A1023 Wire Saver module is used on heat/cool systems when you only have four wires at the thermostat and you
need a fifth 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.
Terminal Designations
7