User's Manual

16 17
Installation
Indoor Air Quality equipment wiring diagrams
Ventilation wiring
Note: The I1/I2 output is a dry contact closure. The ventilation diagram assumes the control is for a
normally closed damper. See the individual ventilation installation instructions for product-specific
wiring details.
Y2I1 W2
S2S1
T1 T2 I2
G
Y
O/B
W
RC
RL
C
G
Y
O/B
W
RC
RL
C
Y2I1 W2
S2S1
T1 T2 I2
DA
MPER
NORMALLY CLOSED
Power and battery replacement
This thermostat can be AC powered,
battery powered, or both (to provide
backup power for communication with
the Control4 system). The thermostat
uses four alkaline AA batteries. Batteries
are optional but recommended if your
thermostat was wired to run on AC power
when installed. If the thermostat will be
AC powered, the thermostat should be
powered from 24VAC before installing
batteries to confirm AC power is present.
For heat pump systems, the C terminal
must be connected to the common of the
24VAC transformer for the system fault
indicator to operate.
The thermostat has a memory backup that
saves the thermostat settings in case of
a power interruption. The system settings
will be retained, but the clock resets after
both battery and AC power are removed.
Clock synchronization comes from the
connection to the Control4 system. To
access the batteries for replacement,
remove the bezel as shown.