T8501 AND T8511 DELUXE ELECTRONIC THERMOSTATS
68-0162—1
6
SETTINGS
System and Fan Settings
System settings control the thermostat operation as follows:
Em. Heat (T8511 only): Emergency heat relay is
automatically controlled by the thermostat. The cooling
system is off. The compressor is de-energized.
Heat: The thermostat controls the heating.
Off: Both the heating and cooling are off.
Cool: The thermostat controls the cooling.
Auto: The thermostat automatically changes between
heating and cooling operation, depending on the indoor
temperature.
Fan settings control the system fan as follows:
On: Fan operates continuously.
Auto: Fan operates with equipment.
The system default setting is Heat and the fan default setting
is Auto. Use the keyboard to change to the desired settings.
See Fig. 7 and 8.
M10147
i
Press to select
heating or cooling
equipment.
Em. Ht.-Emergency heating
Heat— Heating equipment
Off — No equipment
Cool—Cooling equipment
Auto—Thermostat
automatically selects
heating and cooling
equipment.
Press to select
heating or cooling
equipment.
On—
Fan runs continuously
Auto—Fan runs when
heating or cooling
equipment operates
System
System
System
Fan
Fan
Fan
1
1
CHECK LIGHT ON SELECT MODELS
Fig. 7. Thermostat System and fan key location.
NOTE:
Always press the keys with your fingertip or similar
blunt tool. Sharp instruments like a pen or pencil
point can damage the keyboard.
Temperature Settings
The default setpoint for heat is 70
°
F (21
°
C) and for cool is
78
°
F (25.5
°
C). Press the increase
▲
or decrease
▼
key to
change the present setting. To change between heat and
cool, press the Information
i
key until the setting to be
changed appears. Press the increase
▲
or decrease
▼
key
to adjust the setting.
INSTALLER SETUP
NOTE:
For most applications, the thermostat factory
settings will not need to be changed. Review the
factory settings in Table 4 and if no changes are
necessary, go to the Installer System Test section.
The Installer Setup is used to customize the thermostat to
specific systems. Installer Setup numbers are listed in
Table 4. The table includes all the configuration options
available.
A combination of key presses are required to use the Installer
Setup feature.
—
To enter the Installer Setup, press and hold the
Information
i
key with the increase
▲
and decrease
▼
keys until the first number is displayed. All display
segments appear for approximately three seconds before
the number is displayed. See Fig. 8 and 9.
—
To advance to the next Installer Setup, press the
Information
i
key.
—
To change a setting, use the increase
▲
and decrease
▼
keys.
—
To exit the Installer Setup, press and hold the Information
i
key until the display returns to normal (approximately
three seconds). The display will scroll the numbers
backwards to get to the normal display. The Installer
Setup is automatically exited if no key presses are made
for five minutes.
Em HeatOffCool Auto Only
Heat Cool
OnAuto
System
Fan
Room
Outdoor
Em Ht Temporary Setting
Wait
%Humid
Aux Ht
Remote
Repl
Batt
M4844
Fig. 8. All the segments of LCD displayed.
Fig. 9. Installer Setup and setting displayed.
CAUTION
Heat pump and electric heat systems must be
configured to 01 in Installer Setup 02 to prevent
equipment damage caused by the system running
without the fan (T8501 only).
IMPORTANT
Only configurable numbers are shown on the device.
Example: If thermostat does not have a system key,
Installer Setup number 12 will not be displayed.
Review Table 4 factory settings and mark any desired
changed in the Actual Setting column. When the
Installer Setup is complete, review the settings to
confirm that they match the system.
M10406
INSTALLER SETUP
NUMBER DISPLAY
(COLUMN 2 OF TABLE 4)
FACTORY SETTING OR
OTHER CHOICE DISPLAY
(COLUMN 3 OR 5 OF TABLE 4)