Honeywell Chronotherm T8665A Installation Instructions Manual page 7

Temperature 34
range stops in
heating
Temperature 35
range stops in
cooling
Not used 36
Temperature 37
display
adjustment
Furnace air 43
filter timer
(pushbutton
System keys)
Humidifier pad 44
monitor
Ultraviolet air 45
treatment (UV)
system lamp
monitor
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.
T8665A CHRONOTHERM® IV DELUXE PROGRAMMABLE WIRELESS THERMOSTAT
Table 3. Thermostat Installer Setup Options. (Continued)
90 Highest setpoint
heating can be set
to
45 Lowest setpoint
cooling can be set to
— —
0 No difference in
displayed
temperature and
actual room
temperature
2 30 days
(System run time)
0 Off
0 Off
40 to 89 Temperature range (1°F
increments) heating
setpoint can be set to
46 to 99 Temperature range (1°F
increments) cooling
setpoint can be set to
— —
3 thru 1—Display adjusts to 1°F
-3 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
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.)
1, 2, 3 1—90 days
2—180 days
3—365 days
(Time is counted by
calendar days in heat
mode.)
1 1—365 days
(Time is counted by
calendar days in any
mode.)
7
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