Install Batteries; Attach T'stat To Wallplate; Set Calendar And Clock - Lennox X4146 Installation Instructions Manual

Install Batteries

1 − Install three provided AAA alkaline
batteries in the back of the thermo-
stat as shown.
BACK OF THERMOSTAT
+
+
+
BATTERIES
(3)
2 − Remove tab from the lower right−
hand corner of the thermostat back
to activate the real−time clock.
REMOVE
TAB
Attach Thermostat to Wallplate
1 − Align the terminal blocks on the
walplate with the pins on the back
of thermostat.
2 − Push the thermostat straight onto
the pins until it snaps into place.
3 − Turn on power at the furnace or air
handler or at the fuse or circuit
breaker.
WALLPLATE
TERMINAL
SCREW
BLOCK

Set Calendar and Clock

This thermostat is designed to auto-
matically keep the current time and
date in memory for up to ten years, un-
der normal use, once the calendar has
been set. When power is first applied to
the thermostat, the display is ready to
set the calendar.
1 − Use the arrow keys to set the year,
month and day.
2 − Press the DONE key.
SET
CURRENT
DATE
SET
MONTH
USE
ARROWS
TO SET
YEAR
3 − Use the arrow keys to set the cur-
rent time.
4 − Press the DONE key.
USE
ARROWS
TO SET
TIME
NOTE − Date and time may be ad-
justed after the initial set−up using ei-
ther the installer or user set−up menu.
Page 8
PINS ON
BACK OF
THERMOSTAT
MON TUE WED THU FRI SAT
DONE
MON TUE WED THU FRI SAT
AM
PM
DONE