6
TECHNICIAN SETUP
Fahrenheit/Celsius Display
12 or 24 Hour Time
Terminal Designations
Auxiliary heat relay - Stage 2
Compressor relay - Stage 1
Fan relay
Heat pump changeover valve
energized in cooling
Transformer power
Common wire from
system transformer
Heat pump changeover valve
energized in heating
Emergency heat relay
W2
Y
G
O
R
C
B
E
Select
F
or
C with the jumper pin on the
back of the thermostat.
F
is for
Fahrenheit and
C is for Celsius.
12 or 24 hour (military time) can be
selected with the jumper pin.
Important:
The
RESET button must be
pressed after changing any
switch or jumper pin
setting. Batteries must be
installed for this operation.
12 or 24 hour
jumper pin
Select
F
or
C
with the jumper pin
Reset button
Note:
In many systems with no emergency heat relay
a jumper can be installed between E and W2.