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T8665A CHRONOTHERM® IV DELUXE PROGRAMMABLE WIRELESS THERMOSTAT
7 69-1535-3
a
Number 2 must be set to 1 to extend fan operation.
IMPORTANT
Review the settings to confirm they match the
system. Press Run Program to exit the Installer
Setup. The thermostat has saved the Iinstaller
Setup changes and initiated a reset to operate
using the new settings. Be sure to set the cur-
rent day and time immediately.
Temperature
range stops in
heating
34 90 Highest setpoint
heating can be set
to
40 to 89 Temperature range (1°F
increments) heating
setpoint can be set to
Temperature
range stops in
cooling
35 45 Lowest setpoint
cooling can be set to
46 to 99 Temperature range (1°F
increments) cooling
setpoint can be set to
Not used 36 — — — — —
Temperature
display
adjustment
37 0 No difference in
displayed
temperature and
actual room
temperature
3 thru
-3
1—Display adjusts to 1°F
higher than actual room
temperature
2—Display adjusts to 2°F
higher than actual room
temperature
3—Display adjusts to 3°F
higher than actual room
temperature
-1—Display adjusts to 1°F
lower than actual room
temperature
-2—Display adjusts to 2°F
lower than actual room
temperature
-3—Display adjusts to 3°F
lower than actual room
temperature
Furnace air
filter timer
(pushbutton
System keys)
43 2 30 days
(System run time)
0, 1, 3, 4 0—Off
1—10 days
3—60 days
4—120 days
(Time is counted when
heat, cool or fan is
running.)
Humidifier pad
monitor
44 0 Off 1, 2, 3 1—90 days
2—180 days
3—365 days
(Time is counted by
calendar days in heat
mode.)
Ultraviolet air
treatment (UV)
system lamp
monitor
45 0 Off 1 1—365 days
(Time is counted by
calendar days in any
mode.)
Table 3. Thermostat Installer Setup Options. (Continued)