Terminal Designations
This thermostat is shipped from the factory to operate a conventional heating
and cooling system. This thermostat may also be configured for a heat pump
system. See the “heat pump” configuration step on page 17 of this manual to
configure the thermostat for heat pump applications.
Wiring
Wiring
Caution:
Electrical Hazard
All components of the control
system and the thermostat
installation must conform to
Class II circuits per the NEC Code.
Warning:
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.
Installation Tip
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 the
terminal block screws.
Place nonflammable insulation into
the wall opening to prevent drafts.
1.
2.
3.
Wiring Tips
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.
Failure to disconnect the power
before beginning to install this
product can cause electrical shock
or equipment damage.
Note:
In many heat pump systems with
no emergency heat relay, a jumper
can be installed between
E
and
W2
to turn thermostat into a single
stage control for Emergency Heat
Operation.
Thermostat Quick Reference
The low battery indicator is displayed when the AA battery power is low. If the user
fails to replace the battery within 21 days, the screen will only show the low battery
indicator but maintain all functionality. If the user fails to replace the batteries after
an additional 21 days (days 22-42 since first “low battery” display) the setpoints will
change to 55˚F (Heating) and 85˚F (Cooling). If the user adjusts the setpoint away from
either of these, it will hold for 4 hours then return to either 55˚F or 85˚F. After day 63
the batteries must be replaced immediately to avoid freezing or overheating because
the thermostat will shut the unit off until the batteries are changed.
Important
Indicates the current room temperature
Time and day of the week
System Operation Indicators:
HEAT ON, COOL ON and stages are shown
when these systems are running. NOTE: The compressor delay feature is
active if these icons are flashing. The compressor will not turn on until the 5
minute delay has elapsed.
Setpoint:
Displays the user selectable setpoint temperature
HOLD
is displayed when thermostat program is permanently overriden.
Low Battery Indicator:
Replace batteries when this indicator is shown.
Program Menu Options:
Show different options during programming.
Time Periods -
Shows the 4 time Periods for Residential. 2 or 4 Commercial
time periods Occupied/Unoccupied are shown in this text field.
Getting to know your thermostat
Thermostat Quick Reference
5
6
9
10
Battery Installation
Battery installation is recommended even if the thermostat is
hardwired (C terminal connected). When the thermostat is hardwired
and batteries are installed, the thermostat will activate a compressor
delay of 5 minutes when it detects a power outage from the hardwired
power supply.
Important:
High quality alkaline batteries are recommended.
Rechargeable batteries or low quality batteries
do not guarantee a 1-year life span.
Insert 2 AA Alkaline batteries
(included). High quality alkaline
batteries are recommended.
Simple operating instructions
are found on the back of the
battery door.
Clean Display:
Will disable screen for 30 seconds to allow cleaning. A press
and hold of clean also will reset filter change and other reminders.
Keypad Lockout Icon
10
Clean
Display
Technician
Setup
Em. Heat
Cool
Heat
Auto
SYSTEM
HEAT ON
STAGE
1 2 3 4
COOL ON
Mon Tue Wed Thu Fri Sat Sun
AM
PM
Set At
WAKE
LEAVE
RETURN
SLEEP
HOLD
9
8
7
3
2
1
1
2
3
7
8
9
10
Outdoor temperature sensor, Indoor temperature sensors, and Slab sensor
wiring diagrams are located in the sensor manuals. See page 18 in tech setup.
Note:
Terminal
2 Heat 2 Cool
Conventional
System
2 Heat 2 Cool
Heat Pump
System
3 Heat 2 Cool
Heat Pump
System
RC
RH
C
B
O
G
W/E
Y
Y2
W2
Transformer power
(cooling)
Transformer power
(heating)
Transformer common
Energized in heating
Energized in cooling
Fan relay
First stage of heat
First stage of cool
Second stage of cool
Second stage of heat
Transformer power
(cooling)
Transformer power
(heating)
Transformer common
Heat pump changeover
valve energized in heating
Fan relay
First stage of
emergency heat
First stage of heat & cool
Second stage of cool
Auxiliary heat relay,
second stage of heat
Heat pump changeover
valve energized in cooling
Transformer power
(cooling)
Transformer power
(heating)
Transformer common
Heat pump changeover
valve energized in heating
Fan relay
First stage of
emergency heat
First stage of heat & cool
Second stage of cool
& second stage of heat
Auxiliary heat relay,
third stage of heat
Heat pump changeover
valve energized in cooling
S1/S2
Remote Sensor
Remote Sensor
Remote Sensor
