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69-0927—4
5
T8511G,R MICROELECTRONIC HEAT PUMP THERMOSTATS
INSTALLER SETUP
NOTE: For most applications, the thermostat factory-
settings do not need to be changed. Review the
factory settings in Table 2 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. Some of the options include temperature
display, changeover, minimum equipment on time and
minimum off time. Installer numbers are listed in Table 2.
The table 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.
— 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 Figs. 11 and 12.
— To advance to the next Installer Setup, press the
Information i key.
— To change a setting, use the increase ▲ or decrease
▼ key.
— 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 backwards 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 the segments of the LCD.
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.
a
The cycle rate for the last stage of heat is adjustable with 6 being 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 — — — — —
M10105A
INSTALLER SETUP
NUMBER DISPLAY
(COLUMN 2 OF TABLE 2)
FACTORY SETTING OR
OTHER CHOICE DISPLAY
(COLUMN 3 OR 5 OF TABLE 2)