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SPECIFICATIONS
ELECTRICAL DATA
Electrical Rating:
20 to 30 VAC 50/60 Hz or DC
0.05 to 1.5 Amps (Load per terminal)
2.5 Amps Maximum Total Load (All terminals combined)
TH ERMAL DATA
Setpoint Temperature Range:
45°F to 90°F (7°C to 32°C)
Operating Ambient Temperature Range:
32°F to 105°F
Operating Humidity Range:
0 to 90% RH (non-condensing)
Shipping Temperature Range:
-40°F to 150°F
OPERATION
The system "mode" is selected by pressing the SYSTEM button.
Icons on the bottom right corner of the display will indicate the
mode: COOL (-)(-),AUTO (-X-_)), HEAT (_)), EMER, or OFF. In
any mode except OFF, the setpoint temperature will be shown
on the right side of the display. In OFF, this area will be blank.
The current temperature will be displayed on the left side of the
display.
To operate properly in the AUTO mode, the heat setpoint
temperature cannot be the same as or higher than the cool
setpoint temperature. The heat setpoint must be at least 1°
lower than the cool setpoint.
Automatic System Changeover
When the thermostat is in the AUTO mode, both the Flame and
Snowflake icons are displayed. The thermostat will call for heat
or cool depending on the room temperature. The setpoint
temperature displayed will be that of the last mode called. Ifthe
last system cycle was heat, the HEAT setpoint will be displayed.
If the room temperature raises above the HEAT setpoint and the
COOL setpoint and a call for cool is required, the temperature
displayed will change to be the COOL setpoint.
Second Stage Time Delay
Your thermostat is designed to determine the optimum time to
activate the second stage. Simply raising the temperature in
heating or lowering it in cooling will not always force the
thermostat to bring the second stage on quickly. There is atime
delay from 0-30 minutes depending on the performance of the
first stage of the system.
EXAMPLE: For the last 2 hours the thermostat is set on 70° and
the room temperature is 70° with the equipment using only the
first stage of heat. Since the equipment is keeping the tempera-
ture within 1° of setpoint, the thermostat will delay second stage
for a longer time if you manually raise the temperature or if the
room temperature quickly changes. Once the second stage
comes on, it will come on sooner the next time there is a
difference between the setpoint and the room temperature. The
net effect of the staging program is that when the first stage is
capable of making temperature the second stage will delay
longer. When the thermostat calculates that first stage cannot
make temperature in a reasonable time, the second stage will
come on sooner. This built in function automatically optimizes
the use of additional stages of heat or cool.
Manual Operation
Permanent Program Override (HOLD) - With the SYSTEM
button set to HEAT or COOL, press the HOLD button once and
release. "HOLD" will be displayed. Use (_ or (_ to adjust the
temperature. The thermostat will hold the room temperature at
the selected setting until you press RUN button to start program
operation again.
Temperature Program Override - Press (E) or (_ until the
display shows the temperature you want. The thermostat will
override current programming and keep the room temperature
at the selected temperature for a programmed time period.
"HOLD" will be displayed and flashing. The thermostat will
automatically revert to the program after programmed period.
• LOW BATTERY INDICATOR--If the 2 "AA" alkaline batter-
ies are low and should be replaced, the display will be blank
except for "LO BATT". When the batteries are low, pressing
any button will cause the display to operated for ten seconds.
After ten seconds, the display will be blank except for "LO
BATT". You cannot program with low batteries, but you can
override setpoint temperature. After "LO BATT" has been
displayed for 4 weeks, the thermostat will raise the tempera-
ture 10 degrees above your setpoint on COOL mode and will
drop the temperature 10 degrees below your setpoint on
HEAT mode. If the "LO BATT" condition continues, and
when it reaches certain value, the thermostat will turn off all
the loads and "LO BATT" will flash.
SIMPLIFIED COPY DAY FUNCTION --This feature allows
Monday's program to be copied into the rest of the week's
programming. This feature is available the first time you
programmed your thermostat. To use this feature, simply
enter the program for Monday as described in ENTERING
YOUR PROGRAM, then press RUN or HOLD. The only way
to restore this feature is to complete a software reset (see
Reset Operation under TROUBLESHOOTING section).
COPY DAY FUNCTION -- This feature allows
a selected day's program to be copied to the desired day's
programming. To use this feature: in PRGM mode, select the
day to be copied from by pressing the HOLD button. Enter the
program for the selected day as described in ENTERING
YOUR PROGRAM. Press and hold the TIME button for 4
seconds to begin the COPY mode. The LCD will display
"COPY" and the selected day to be copied. The day the
program will copy to will be flashing. Press the HOLD button
to select the day you want to copy to. Press TIME to complete
the Copy Day operation and return to PRGM mode. Press
RUN to exit.