T8024D PROGRAMMABLE MULTISTAGE THERMOSTAT
69-1387-1
4
Slide the SYSTEM switch in the bottom right corner of
the thermostat to select the desired system setting.
Fig. 7. Digital display and system
switches (FAN and SYSTEM).
INSTALLER SETUP
Setting °F/°C Indication and Heat
Cycle Rate
The following instructions provide information to change
the heating cycle rate to match the heating equipment
and to choose either Fahrenheit (°F) or Celsius (°C).
NOTE: All four steps must be completed to save
changes to °F/°C indication and heat cycle rate.
1.
Enter Installer Setup.
a. Use
▲
or
▼
key to set the temperature setpoint
to 52°F (11°C)
.
b. Press the
▲
and
▼
keys simultaneously for
more than two seconds to enter installer setup.
c. When released, a software revision code is dis-
played.
d. Press the
▲
key. Factory configuration (FC) is
displayed A typical example is shown, but infor-
mation displayed varies by model. This infor-
mation is for factory use only.
OPTIONAL SYSTEM CHECKOUT
When in steps 1c and 1d only, pressing the
▼
key can be
used to turn heat or cool outputs on and off. Change the
SYSTEM switch setting to test heat or cool outputs. No
action takes place If the system switch is in the Off
position.
Examples:System setting at HEAT: If heat is on, pressing
the
▼
key turns it off; if heat is off, pressing the
▼
key
turns it on.
System setting at COOL: If cool is on, pressing the
▼
key turns it off; if cool is off, pressing the
▼
key turns it
on. The five minute minimum off time is bypassed.
CAUTION
Equipment Damage Hazard.
Can short equipment.
Allow compressor to remain off for 5 minutes
before restarting. Refer to manufacturer
recommendations.
NOTE: In Installer Setup only, each press of the
▲
key
momentarily displays 1. Each press of the
▼
key momentarily displays 2. When the keys are
released, these one-digit codes are no longer
displayed.
2.
Setting °C or °F.
a. Press the
▲
key again to display the current
setting.
b. Press the
▼
key to change the °C or °F
indication.
3.
Setting Number of Cool/Heat Stages (T8024 only).
a. Press
▲
to display number of cooling stages.
SYST
EM
Cool Of
f Heat
Auto On
FAN
T8024
M18504
Hold
Select
TUE
PM
M12582A
SET
HT.
M12583A
SET
HT.
M12584A
M12587A
M12586A
M20216
