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69-0961—4
5
MICROELECTRONIC HEAT PUMP THERMOSTAT
INSTALLER SETUP
NOTE: For most applications, the thermostat factory
settings do not need changing. Review the
Factory Setting column in Table 2 and if no
changes are necessary, go to the Installer
System-Test section.
Use the Installer Setup to customize the thermostat to
specific systems. Some of the options include temperature
display, changeover, minimum equipment on time and
minimum off time. Installer Setup numbers are listed in
Table 2. It includes all the configuration options and the
factory-settings available for the T8511.
IMPORTANT
The Installer Setup must be set correctly for the
HVAC equipment, thermostat and subbase to
operate properly.
A combination of key presses are required to use the
Installer Setup feature:
1. To enter the Installer Setup, press and hold the
Information i key and the increase ▲ and
decrease ▼ keys until the first number displays. All
display segments appear for approximately three
seconds before the number displays. See Fig. 11
and 12.
2. To advance to the next Installer Setup, press the
Information i key.
3. To change a setting, press the increase ▲ or
decrease ▼ key.
4. To exit the Installer Setup, press and hold the
Information i key until the display returns to
normal (approximately three seconds). The display
scrolls the numbers backward to get to the normal
display. The Installer Setup is automatically exited if
no key presses are made for five minutes.
Fig. 11. Display of all LCD segments.
Fig. 12. Display of installer setup and setting.
NOTE: Only configurable numbers are shown.
Em HeatOffCool Auto Only
Heat Cool
OnAuto
System Fan
Room
Outdoor
Em Ht Temporary Setting
Wait
%Humid
Aux Ht
Remote
Repl
Batt
M4844
Table 2. Thermostat Installer Setup Options.
M10105A
INSTALLER SETUP
NUMBER DISPLAY
(COLUMN 2 OF TABLE 2)
FACTORY SETTING OR
OTHER CHOICE DISPLAY
(COLUMN 3 OR 5 OF TABLE 2)
a
The cycle rate for the last stage of heat is adjustable with 6 as the factory setting.
(continued)
Installer Setup
Number
(Press i key
Factory Setting
Other Choices
(Press ▲ or ▼ key to change)
Actual
Select
to change)
Display Description Display Description
Setting
Not used. 01 thru 04 — — — — —
Heating cycle 05 03 Stage 2. 03, 06 03—3 cph used for stage 1
rate.
06 — Not used.
or 09 heat pump systems.
—
07 09 Emergency heat. 06—6 cph used for
conventional systems.
09—9 cph used for electric
heat systems.
Not used. 08 thru 11 — — — — —
Changeover
(T8511G only).
12 01 Manual changeover. 00, 02 00—Automatic changeover.
02—Automatic changeover
only
Not used. 13 — — — — —
Degree
temperature
display.
14 00 Temperature is
displayed in °F.
01 Temperature is displayed
in °C
Not used. 15 thru 18 — — — — —