Honeywell T8501 Installation Instructions Manual page 6

T8501 MICROELECTRONIC THERMOSTATS
Table 2. Thermostat Installer Setup Options. (Continued)
Installer Setup
Number (Press
i key to
Select change)
Degree 14
temperature
display
Not Used. 15 thru 18
Extended fan 19
operation in
a,b
heating.
Extended fan 20
operation in
a
cooling.
Not Used. 21 thru 23
Outdoor 24
temperature
a
display
Not Used. 25 thru 32
Minimum off 33
time for the
compressor.
Temperature 34
range stops
in heating.
Temperature 35
range stops
in cooling.
System On 36
a
display.
Temperature 37
display
adjustment.
a
Available on select models.
b
Mode 02 must be set to 01 to extend fan operation.
IMPORTANT
Review the settings to confirm that they match
the system. Press Run Program to exit the
Installer Setup. The thermostat has saved the
69-0925—4
Factory Setting
Display Description
00 Temperature is
displayed in °F
— —
00 No extended fan
operation after the
call for heat ends.
00 No extended fan
operation after the
call for cool ends.
— —
00 No outdoor
temperature is
displayed.
— —
05 5 minutes minimum
off time for the
compressor.
90 Heating setpoint can
be set no higher
than 90°F.
Lowest setpoint
c
45
cooling can be set
to.
00 LCD On symbol is
displayed when
system is energized.
00 No difference in
displayed
temperature and
actual room
temperature.
6
Other Choices
(Press ! or # key to change)
Display Description
01 Temperature is displayed in °C
— —
01 Fan operation is extended 90
seconds after the call for heat
ends.
01 Fan operation is extended 90
seconds after the call for cool
ends.
— —
01 Outdoor temperature is
displayed. Needs a C7089B1000
Outdoor Temperature Sensor to
operate.
— —
00, 01, Minimum number of minutes (0
02, 03 thru 5) the compressor will be off
or 04 between calls for the compressor.
40 to 90 Number can be set anywhere
between 40 and 90 in 1°F
increments.
45 to 99 Number can be set anywhere
between 45 and 99 in 1°F
increments.
01 Display is disabled, usually set
for 01 for a zoned system.
+3 thru 01—Display adjusts to 1°F higher
03 than actual room temperature.
02—Display adjusts to 2°F higher
than actual room temperature.
03—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.
Installer Setup changes and initiated a reset in
order to operate using the new settings. Be sure
to set the current day and time immediately.