Operation; Setting Fan And System Switches; Fan Switch; System Switch - Honeywell T8000 Installation Instructions Manual

NOTE: In installer setup only, each press of the
momentarily displays 1. Each press of the
momentarily displays 2. When the keys are
released, these one-digit codes are no longer
displayed.
2. Setting °C or °F.
a. Press the
again to display
the current setting.
b. Press the
change the °C or
°F indication.
3. Setting Heat Cycle Rate
(see Table 2 for the cycle rate options and equip-
ment).
a. Press the
to display the
current heat
cycle rate setting
of 1, 3, 4, 5, 6, 9,
or 12 cph.
b. If the desired cycle rate is displayed, press the
key to exit the installer setup.
c. To change the
heat cycle rate,
press the
until your choice of
1, 3, 4, 5, 6, 9, or
12 is displayed.
d. Press the
display cooling
algorithm configu-
ration default.
e. Press the
again to change
cooling algorithm to C1 or C3.
C1 = Standard cooling algorithm.
C3 = Agressive cooling algorithm (can
cause overshooting).
f. Press the
(CC) is displayed. A typical example is shown,
but CC varies by
model. (This
information is for
factory use only.)
4. Exit Installer
Setup.
a. Press
the
key to
save all
changes
and return to normal operation.
key
key to
key
key
key to
key
key again. Current configuration
PM
M12590A
T8000, T8001 PROGRAMMABLE THERMOSTAT
key
key
Steam, Gravity
Hydronic Heat, Condensing
Gas Furnaces
Gas or Oil Forced Air
Electric Heat
Special Applications
a
High efficiency furnace (90+).
b
Refer to the equipment manufacturer's Instructions.
M12587A

OPERATION

Setting FAN and SYSTEM Switches

M12586A
Fan and system settings are controlled manually by using
the switches located at the bottom of the thermostat case.
See Fig. 11.

FAN Switch

Fan switch settings are:
On: The fan runs continuously. Use for improved air
M12588A
circulation and air quality.
Auto: Normal setting for most homes. In cooling, the fan
starts and stops with the cooling equipment. In
heating, the fan is controlled directly by the heating
equipment and may start a few minutes after the
heating equipment turns on (most systems). When
the fan operation (fuel) switch is in the E position,
the fan starts and stops with the heating equipment.
M12589A
Slide the FAN switch in the lower left corner of the
thermostat to select the desired fan setting.

SYSTEM Switch

M14691
System switch settings control thermostat operation as
follows:
Cool: The thermostat controls the cooling system.
Off: Both heating and cooling are off.
Heat: The thermostat controls the heating system.
Slide the SYSTEM switch in the lower right corner of the
thermostat to select the desired system setting.
M14692
T U E
Fig. 11. Digital Display and System Switches.
5
Table 2. Heating Cycle Rate
System
a
b
H o l d
Cycles Per Hour
1
3
6
9
12
4, 5, 12
S e l e
c t
M14693
69-1432-1