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.
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