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4
4) Select Compressor Lockout (LOC OFF or ON) - Select-
ing LOC ON will cause the thermostat to wait 5 minutes
before turning on the compressor if the heating and cooling
system loses power. It will also wait 5 minutes minimum
between cooling cycles. This is intended to help protect the
compressor from short cycling. Some newer compressors
already have a time delay built in and do not require this
feature. Your compressor manufacturer can tell you if the
feature is already present in their system. When the
compressor time delay occurs it will flash the (snowflake
icon) for about five minutes then turn on the compressor.
5) Select Temperature Display Adjustment (4 LO to 4 HI) -
Allows you to adjust the room temperature display 4° higher
or lower. Your thermostat was accurately calibrated at the
factory but you have the option to change the display
temperature to match your previous thermostat.
6) Select Temperature DIsplay (
°F or °C) - Changes the
display readout to Centigrade or Fahrenheit as required.
OPERATING FEATURES
Now that you are familiar with the thermostat buttons and
display, read the following information to learn about the many
features of the thermostat.
• SIMULTANEOUS HEATING/COOLING PROGRAM
STORAGE — You can enter both your heating and cooling
set points at the same time. There is no need to change the
thermostat at the beginning of each season.
• CONFIGURATION MENU — Allows you to customize
certain thermostat options.
SETTING THE THERMOSTAT
This thermostat is very easy to operate. Set the SYSTEM switch
to either HEAT or COOL then press
or until the
temperature you want to maintain is shown on the right side of
the display. If you want to turn the system off, just move the
SYSTEM switch to OFF.
The FAN switch controls the fan operation. When the FAN
switch is set to AUTO, the fan will cycle with the furnace or air
conditioner. When the FAN switch is set to ON, the fan will run
continuously, regardles of SYSTEM switch position.
1
Step Press Button(s) Displayed (Factory Default) Press or to select: COMMENTS
Set SYSTEM
switch to OFF
Set SYSTEM
switch to HEAT
or COOL
2
(FA)
SL
SYSTEM switch must be OFF to configure thermostat options
4
5
6
7
LOC
(OFF)
ON
0 HI
(0)
4 LO to
4 HI
(°F) °C
Returns to normal operation
Select Compressor lockout OFF or ON
Select temperature display adjustment higher or lower
Select temperature display to °F or °C
and
3
d-L
(ON)
OFF
Select display backlight OFF or ON
Select FA or SL (Fast or Slow) heating cycle rate
Configuration Menu
* Press and
to advance to next item
and
and
and
and
The Display
5
Flame icon ( ) is displayed when the SYSTEM switch is in
the HEAT position. Snowflake icon (
)is displayed (non-
flashing) when the SYSTEM switch is in the COOL position.
Snowflake is displayed (flashing) if the thermostat is in
lockout mode to prevent the compressor from cycling too
quickly.
6
Displays current time and temperature.
7
Displays set point temperature (this is blank when SYS-
TEM switch is in the OFF position).
CONFIGURATION MENU
The configuration menu allows you to set certain thermostat
operating characteristics to your system or personal require-
ments.
Move SYSTEM switch to the OFF position, then press
and
at the same time to enter the configuration menu. The
display will show the first item in the configuration menu.
The configuration menu chart below summarizes the configura-
tion options. An explanation of each option follows.
Press and to change to the next menu item. To exit the
menu and return to the program operation, move the SYSTEM
switch to HEAT or COOL. If no keys are pressed within fifteen
minutes, the thermostat will revert to normal operation.
2) Select FA or SL (Fast or Slow) Heating Cycle Rate - The
FA setting is frequently used for gas, oil or electric heat. The
SL setting produces a longer heating cycle which is nor-
mally for hot water or steam (hydronic) systems. Both
settings produce very accurate temperature control and
can be set to your personal preference. FA cycles the
system just under 1°F and the SL setting cycles at approxi-
mately 1.5°F.
3) Select Display Backlight (d-L OFF or ON) - The display
backlight improves display contrast in low lighting condi-
tions. Selecting backlight ON will keep the light on continu-
ously. Selecting OFF will keep the light off.