Thermostat Keys; System And Fan Keys - Honeywell T8635L Installation Instructions Manual

T8635L MICROELECTRONIC COMMUNICATING PROGRAMMABLE THERMOSTAT
SETTINGS

Thermostat Keys

The thermostat keys are used to:
— Set current day and time.
— Program times and setpoints for heating and cooling.
— Temporarily override program temperatures.
— Display present setting.
SET WAKE TIMES
AND SETPOINTS
INCREASE TIME
SETTING OR SCROLL
FORWARD THROUGH
INSTALLER SETUP
AND SYSTEM TEST
SET CURRENT
DAY AND TIME
RETURN TO NORMAL
OPERATIONS
SET CURRENT OR
PROGRAM DAY
ENTER INDEFINITE
OR TIMED HOLD MODE
DECREASE TIME SETTING
OR SCROLL BACKWARD
THROUGH INSTALLER
SETUP AND SYSTEM TEST
CHANGE BETWEEN
DAYLIGHT SAVINGS
AND STANDARD TIME

System and Fan Keys

Use the System and Fan keys on the thermostat to
select the system and fan settings.
1. Use the System key setting (Fig. 11) to control the
thermostat operation:
Heat: The thermostat controls the heating. When
the thermostat is calling for heat, a
indicated in the display.
Cool: The thermostat controls the cooling. When
the thermostat is calling for cool, a
indicated in the display.
Auto: The thermostat controls heating and cool-
ing, automatically switching from heat to
cool based on room temperature and
thermostat setpoints.
NOTE: Auto is an option on non-zoned systems
using W8635A,B or on zoned systems
using W8835.
Off: Both Heating and cooling are off.
Em Heat: The thermostat controls heating. When
thermostat is calling for emergency heat,
a and Em Ht are indicated in display.
NOTE: Em Heat is an option on systems using
the W8635B or W8835 and configured
for a heat pump with auxiliary heat.
69-1331—5
INCREASE TEMPERATURE SETTING OR SCROLL
FORWARD THROUGH INSTALLER SETUP OPTIONS
Run Set Current
Program Day/Time
Time
Hold Temp
Day
Daylight
Copy
Time
COPY ONE
PROGRAMMED DAY
TO ANOTHER DAY
Fig. 10. Thermostat key locations and descriptions.
— Configure Installer Setup.
— Perform Installer System Test.
— Display outdoor temperature (when C7089B is
connected).
— Set the System key setting.
— Set the Fan key setting.
— Set, view and clear the filter setting.
See Fig. 10 for key location.
Wake Leave Return
Set Program
Heat/Cool
Filter System
Settings
CHANGE BETWEEN SELECT FILTER
HEATING AND EXPIRATION IN
COOLING SETPOINTS
NUMBER OF DAYS
Run Set Current
Wake Leave Return
Program Day/Time
Time Set Program
Heat/Cool
Hold Temp Day Filter System
Settings
Daylight
Copy
Time
Fig. 11. System key setting.
is
IMPORTANT
• The T8635L has an adjustable compressor
protection setting
minutes.
is
• The thermostat waits to call for cooling (or
heating when used with the heat pumps):
—when power is first established,
—when a power outage occurs or
—when the call has just ended and another
call is immediately attempted.
• "wait" is displayed during the compressor pro-
tection period.
• To override the compressor protection during
installation, refer to the Installer System Test
section.
• To permanently override the compressor pro-
tection, see Installer Setup No. 33 and change
the setting to 0. See Table 6.
Auto: The thermostat automatically changes
between heating and cooling operation,
depending on the indoor temperature.
6
DECREASE
TEMPERATURE
SETTING OR
SCROLL BACKWARD
THROUGH INSTALLER
SETUP OPTIONS
DISPLAY
INFORMATION
SUCH AS PRESENT
SETTINGS
SET RETURN TIMES
AND SETPOINTS
Sleep
SET SLEEP TIMES
AND SETPOINTS
Fan
SET LEAVE TIMES
AND SETPOINTS
SELECT FAN
OPERATION
SELECT SYSTEM
OPERATION (HEAT,
COOL, OFF, AUTO)
Sleep
System
Fan

it can be set from 0 to 5
M17765
System
Heat
Off
Cool
Auto
M17764