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III. CLOCK BACKUP
In the event of a power loss, the thermostat will keep
time for a minimum of 48 hours without external power or
batteries.
IV. FAN OPERATION
If Fan On is selected, the fan will run continuously during
occupied schedule (except when Mode is switched to OFF).
The fan will be off during unoccupied schedule except during
heating or cooling operation.
If Fan On is not selected, the fan will only operate during
heating or cooling operation.
V. EMERGENCY HEAT
Emergency heat is available for heat pump applications. To
turn on emergency heat, press and hold the Fan button. While
holding the Fan button, press the UP button for 2 seconds.
An ''EH'' will be displayed. During emergency heat, the fan
will operate and the second stage of heat will be energized
(locking out the first stage compressor). To exit emergency
heat, press and hold the Fan button. While holding the Fan
button, press the UP button for 2 seconds. During emergency
heat, only OFF and HEAT modes are available.
VI. ELECTRIC HEAT
When the Electric Heat option in the advanced set up is set
to ON (configured by installer), the thermostat will turn on
the fan immediately any time there is a heat demand. This
feature should only be used on electric heating applications.
Do not use with gas heat.
VII. HOLIDAY MODE
When the thermostat is in Holiday mode, the thermostat will
operate under Unoccupied set points. To configure and acti-
vate the Holiday mode, press the Holiday button. The ''HOL''
icon will be displayed along with the remaining days of Holi-
day mode operation. Press the UP or DOWN ARROWS to se-
lect the number of days that the holiday schedule will be in
effect. A value of 0 disables Holiday mode. The duration can
be set from 1 to 99 days. The thermostat will enter Holiday
mode on midnight of the next day after the mode has been
activated. Holiday mode will remain in effect until midnight
of the last configured day.
If the Holiday mode is in effect, the number of days remain-
ing will blink on and off and the ''Unoccupied'' icon will be
displayed. The Override button will be active during Holiday
mode. The Dry Contact Switch is ignored.
To turn off the Holiday mode before the remaining config-
ured days have passed, press the Holiday button to enter into
the configuration mode. Press the DOWN ARROW to set the
number of days to zero. Holiday mode will be disabled.
VIII. REMOTE TEMPERATURE SENSOR
A remote temperature sensor is available to read the tem-
perature from a space. If a remote temperature sensor is con-
nected, the thermostat will ignore the reading of its internal
sensor. When the thermostat is using a reading from a re-
mote sensor, the degree symbol above the temperature read-
ing will blink.
IX. KEYPAD LOCK
To prevent unauthorized use of the thermostat, the front panel
buttons can be disabled. To disable or lock the keypad, press
and hold the Mode button. While holding down the Mode but-
ton, press the UP and DOWN ARROW buttons simulta-
neously. The ''Locked'' icon will appear on the display.
The thermostat is unlocked by performing the same proce-
dure. Press and hold the Mode button. While holding down
the Mode button, press the UP and DOWN ARROW buttons
simultaneously. The ''Locked'' icon will be removed from the
display.
X. DRY CONTACT SWITCH/EXTERNAL CONTROL
A dry contact switch is provided to allow an external device
to force the thermostat into Occupied 1. When the thermo-
stat is forced into Occupied 1 via the dry contact closure, the
Occupied 1 icon will blink each second. The external device
is wired to contacts CK1 and CK2. See Fig. 8.
NOTE: More than one thermostat is not required. All ther-
mostats wired to the external device will enter Occupied 1
and Unoccupied modes at the same time.
A. Soft Start
When multiple thermostats are controlled by the same exter-
nal device, a Soft Start option can be used to stagger the turn
on times of the HVAC equipment. This feature may cause a
delay in operation after entering Occupied 1.
EXTERNAL
THERMOSTAT
DEVICE
CK1
CK2
NOTE: Do not cross wiring.
Fig. 8 — Typical Dry Contact Switch Wiring
—7—
THERMOSTAT
THERMOSTAT
CK1
CK1
CK2
CK2
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- Install Thermostat
- Configure Advanced Setup
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