System And Fan Settings; Using Thermostat Keys; Temperature Settings - Honeywell T8511G Installation Instructions Manual

MICROELECTRONIC HEAT PUMP THERMOSTAT
A.
ENGAGE TABS AT TOP OF THERMOSTAT AND WALLPLATE.
B.
PRESS LOWER EDGE OF CASE TO LATCH.
Fig. 7. Mounting thermostat on wallplate.
NOTE: To remove the thermostat from the wall, first
pull out at the bottom of the thermostat; then
remove top.

Using Thermostat Keys

Use thermostat keys to:
• Set temperature,
• Display present setting,
• Configure Installer Setup,
• Check System-Test,
• Display outdoor temperature (select models).
• Set system operation,
• Set fan operation.
See Fig. 8 for the key information.
Fig. 8. Thermostat key locations and descriptions.
69-0961—4
M6798A
INCREASE
TEMPERATURE
SETTING
DECREASE
i
TEMPERATURE
SETTING
DISPLAY PRESENT
SETTINGS AND SCROLL
THROUGH INSTALLER
SETUP MODES
(INFORMATION KEY)
SETTINGS

System and Fan Settings

System settings control the thermostat operation as
follows:
Em. Heat: 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: Equipment controls fan.
The system default setting is Heat and the fan default
setting is Auto. Use the keyboard to change to the desired
settings. See Fig.10.
System
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.
1 CHECK LIGHT ON SELECT MODELS
Fig. 10. T8511G (automatic changeover) system
NOTE: Always press the system and fan 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
change the present setting. To change between heat and
M6801
cool, press the Information i key until the setting to be
changed appears.
4
i
Fan
Press to select
heating or cooling
equipment.
On— Fan runs continuously
Auto—Fan runs when
System Fan
heating or cooling
equipment operates
1
and fan key locations.
or decrease
System
Fan
M10147
key to