Honeywell T8501 Installation Instructions Manual page 5

Em Ht Temporary Setting
Aux Ht
Repl
Wait Heat Cool
Batt
System
Em HeatOffCool Auto Only
Fig. 10. Display of all LCD segments.
.
INSTALLER SETUP
NUMBER DISPLAY
(COLUMN 1 OF TABLE 2)
FACTORY SETTING OR
OTHER CHOICE DISPLAY
(COLUMN 3 OR 5 OF TABLE 2)
Fig. 11. Display of Installer Setup
number and setting.
Installer Setup
Number (Press
i key to
Select change)
Not Used. 01
Fan 02
a
operation
Not Used. 03
Heating cycle 04
rate.
Not Used. 05 thru 11
Changeover 12
(T8501D
only)
Not used 13
Remote
Room
%Humid
Outdoor
Fan
IMPORTANT
OnAuto
M4844
M10105B
Table 2. Thermostat Installer Setup Options.
Factory Setting
Display Description
— —
0 Conventional
applications where
equipment controls
fan operation in heat
mode.
— —
6 6 cph used for
conventional
systems
— —
01 Manual changeover
— —
5
T8501 MICROELECTRONIC THERMOSTATS
CAUTION
Equipment Damage Hazard.
Heat pump and electric heat systems can be
damaged when run without fan.
Configure to 01 in Installer Setup number 02 to
prevent equipment damage.
Only configurable numbers are shown on the
device. Example: If thermostat does not have a
system key, Installer Setup Number 12 does not
display. Review Table 3 factory-settings and
mark any desired changes in the Actual Setting
column. When Installer Setup is complete,
review the settings to confirm that they match
the system.
Other Choices
(Press ! or # key to change)
Display Description
— —
01 Heat pump or electric heat
applications where thermostat
controls fan operation in heat
mode.
— —
01, 03 01—1 cph used for radiant floor
or 09 heat, gravity system
03—3 cph used for hot water
systems or high efficiency
furnaces
09—9 cph used for electric heat
systems
— —
00 00—Auto changeover
— —
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