Honeywell t8501A, Installation Instructions Manual

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T8501A,B,C,D MICROELECTRONIC THERMOSTATS
Table 2. Thermostat Installer Setup Options (continued).
a
Available on select models.
b
Mode 02 must be set to 01 to extend fan operation.
c
T8501D is 48 ° F.
Mode Display
(Press i key
Factory-Setting
Other Choices
(Press
▲
or
▼
key to change)
Select
to change)
Display Description Display Description
Not used 13 — — — —
Degree tempera-
ture display 14 00 Temperature is
displayed in °F 01 Temperature is displayed in °C
Not used 15 thru 18 — — — —
Extended fan
operation in
heating
a,b
19 00 No extended fan
operation after the call
for heat ends 01 Fan operation is extended
90 seconds after the call for
heat ends
Extended fan
operation in
cooling
a
20 00 No extended fan
operation after the call
for cool ends 01 Fan operation is extended
90 seconds after the call for
cool ends
Not used 21 thru 23 — — — —
Outdoor
temperature
display
a
24 00 No outdoor temperature
is displayed 01 Outdoor temperature is displayed.
Needs a C7089B1000 Outdoor
Sensor to operate.
Not used 25 thru 32 — — — —
Minimum off time
for the
compressor 33 05 5 minute minimum off
time for the compressor 00, 01,
02, 03 or
04 Minimum number of minutes
(0 thru 5) the compressor will be
off between calls for the
compressor
Heating setpoint
range stop
a
34 90 Heating setpoint can be
set no higher than 90°F 40 thru
90 Number can be set anywhere
between 40 and 90 in 1°F
increments
Cooling setpoint
range stop
a
35 45
c
Cooling setpoint can be
set no lower than 45°F
c
45
c
thru
99
Number can be set anywhere
between 45
c
and 99 in 1°F
increments
System On
display
a
36 00 LCD On symbol is
displayed when system
is energized 01 Display is disabled, usually set for
01 for a zoned system
Temperature
display
adjustment 37 00 No difference in
displayed temperature
and actual room
temperature 01 thru
06
01—Display adjusts to 1°F higher
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
04—Display adjusts to 1°F lower
than actual room temperature
05—Display adjusts to 2°F lower
than actual room temperature
06—Display adjusts to 3°F lower
than actual room temperature