Bosch BCC50 Installation Manual And User's Manual page 6

Thermostat Installation
Step 1
Turn OFF power
Turn off all power to your
HVAC (Heating, Ventilation,
and Air Conditioning) system
by using the master
equipment switch or
circuit breaker box.
WARNING: Failure to turn off the power may
result in electrical shock and/or damage to the
equipment.
Confirm that your system is off
Try to adjust the temperature on your old thermostat. If
you don't hear the system turn on within 5 minutes, air
does not come out from the vents or the old thermostat
does not even power on, then you have successfully
turned off the power to your system.
6
Step 2
Remove the old thermostat from the
old wall plate
ON OFF
OLD WALL PLATE
Step 3
Make sure your
old thermostat
Does Not Contain
Line Voltage Wiring
If you see any of these wire nuts,
unfortunately the BCC50 will not work
with your system. If you are unsure or
would like to discuss your options,
please contact a professional or our
support line: 1-800-283-3787.
Y2 W2 G W C Y R RC
L E AUX G OB C Y R RC
OLD THERMOSTAT