Technician Setup
Tech Setup Steps
Adjustment Options
Default
LCD Will Show
Power supply
Factory-installed jumper. Remove only when installing on
2-transformer systems.
Typical 1H/1C System: 1 Transformer
Wiring Diagrams
Use either O or B terminals for changeover valve.
Use a small piece of wire (not supplied) to connect W and Y terminals.
Typical 1H/1C Heat Pump System
1. Press MENU button
2. Press and hold
TECHNICIAN SETUP
button for 3 seconds. This 3 second delay is
designed so that homeowners do not accidentally access the installer settings.
3. Configure the installer options as desired using the table below.
4. Use the or keys to change settings and the NEXT STEP or PREV
STEP key to move from one step to another. Note: Only press DONE key when you
want to exit the Technician Setup options.
Wiring
Technician Setup
Wiring Tips
RH & RC Terminals
For single transformer systems, leave the
jumper wire in place between RH and RC.
Remove jumper wire for two transformer
systems.
Heat Pump Systems
If wiring to a heat pump, use a small
piece of wire (not supplied) to connect
terminals W and Y.
(With NO AUX or
Emergency Heat)
C Terminal
The C (common wire) terminal does
not have to be connected when the
thermostat is powered by batteries.
Wire Specifications
Use shielded or non-shielded
18-22 gauge thermostat wire.
Caution:
Electrical Hazard
All components of the control
system and the thermostat
installation must conform to Class
II circuits per the NEC Code.
Warning:
Installation Tip:
Do not overtighten terminal block screws, as this
can damage the terminal block. A damaged terminal block can
keep the thermostat from fitting on the subbase correctly or cause
system operation issues.
Max Torque = 6in-lbs.
Wiring
If you are replacing a thermostat,
make note of the terminal
connections on the thermostat
that is being replaced. In some
cases the wiring connections will
not be color coded. For example,
the green wire may not be
connected to the
G
terminal.
Loosen the terminal block
screws. Insert wires then
retighten terminal block screws.
Place nonflammable insulation
into wall opening to prevent
drafts.
1.
2.
3.
Failure to disconnect the power
before beginning to install this
product can cause electrical
shock or equipment damage.
Terminal Designations
C
O
Heat pump changeover valve
energized in cooling
Heat pump changeover valve
energized in heating
W
Heat relay
RH
Transformer power for heating
RC
Transformer power for cooling
G
Fan relay
Y
Compressor relay
B
Common wire from secondary side of
cooling system transformer
Set fan operation switch to electric.
Optional 24 VAC common connection when thermostat is used in battery power mode.
RC
Y
C
W
G
RH
COMPRESSOR
RELAY
FAN RELAY
C
R
L2
L1 HOT
COOL CHANGE
OVER VALVE
HEAT CHANGE
OVER VALVE
O
B
This feature allows the installer to
select the minimum run time for
the compressor. For example: a
setting of 4 will force the
compressor to run for at least 4
minutes every time the
compressor turns on, regardless of
the room temperature.
You can select the minimum
compressor run time from “off”,
“3”, “4”, or “5” minutes. If 3,4,
or 5 is selected, the compressor
will run for at least the selected
time before turning off.
0
This feature allows the installer
to change the calibration of the
room temperature display. For
example, if the thermostat reads
70˚ degrees and you would like it
to read 72˚ then 2.
Room
Temperature
Calibration
You can adjust the room
temperature display to read
4˚above or below the factory
calibrated reading.
Minimum
Compressor
On Time
0.5
The swing setting often called
“cycle rate”, “differential” or “
anticipation” is adjustable. A
smaller swing setting will cause
more frequent cycles and a
larger swing setting will cause
fewer cycles.
Cooling
Swing
The cooling swing setting is
adjustable from 0.2˚ to 2˚. For
example: A swing setting of
0.5˚ will turn the cooling on at
approximately 0.5˚ above the
setpoint and turn the cooling off
at approximately 0.5˚ below the
setpoint.
0FF
This feature will flash a reminder
in the display after the elapsed run
time to remind the user to change
the filter. A setting of “OFF” will
disable this feature.
Filter Change
Reminder
You can adjust the filter change
reminder from OFF to 2000
hours of runtime in 50 hour
increments.
SE
SO
The swing setting often called
“cycle rate”, “differential” or
“anticipation” is adjustable. A
smaller swing setting will cause
more frequent cycles and a larger
swing setting will cause fewer
cycles.
The heating swing setting is
adjustable from 0.2˚ to 2˚. For
example: A swing setting of
0.5˚ will turn the heating on at
approximately 0.5˚ below the
setpoint and turn the heating off
at approximately 0.5˚ above the
setpoint.
Heating
Swing
0.4
The compressor short cycle delay
protects the compressor from
short cycling. This feature will not
allow the compressor to be turned
on for 5 minutes after it was last
turned off.
Selecting “ON” will not allow
the compressor to be turned on
for 5 minutes after the last time
the compressor was switched
off. Select “OFF” to remove this
delay.
Compressor
Short Cycle
Delay
0FF
CO
HE
CO
Tech Setup Steps
Adjustment Options
Default
LCD Will Show
0N
Keypad lockout allows you to
configure the thermostat so that
none or some of the keys do not
function.
PA= Partial keypad lockout,
locks all the keys except the
or keys. FU= Full
Keypad lockout, locks out all
the keys.
Note:
Keypad lockout
instructions on page 12.
Keypad
Lockout
PA
PA
KEY LOCK
This feature allows you to set a
maximum heat setpoint value.
The setpoint temperature cannot
be raised above this valve.
Use the or key to select
the maximum heat setpoint.
Range 44˚F - 90˚F
Heating
Temperature
Setpoint
Limit
90
˚
HE
HEAT LIMIT
90
This feature allows you to set a
minimum cool setpoint value.
The setpoint temperature cannot
be lowered below this value.
Use the or key to select
the minimum cool setpoint.
Range 44˚F - 90˚F
Cooling
Temperature
Setpoint
Limit
44
˚
CO
44
Select F for Fahrenheit read out
or select C for Celsius read out.
˚F for Fahrenheit
˚C for Celsiust
F˚ or C˚
F
˚
74
O
You can select either 12 or 24
hour clock setting.
12 or 24
Hour Clock
12 Hour
Clock
12H
Use the or key to select
12 or 24 hour clock.
RC
Y
C
W
G
RH
COMPRESSOR
RELAY
HEAT RELAY
FAN RELAY
C
R
L2
L1 HOT
0.8
0.8
FILTER
CALIBRATE
MIN COMP
COMP DELAY
COOL SWING
HEAT SWING
COOL LIMIT
CLOCK SET
