Bosch BCC100 User Manual page 4

2
Mount the New Wall Plate
Use the enclosed screws and anchors to
mount the new wall plate. In most cases,
you can utilize the same mounting position of your old
thermostat. Be sure to check the alignment of your wall
plate before installation to ensure all holes are covered.
3
Connect the New Wall Plate
CAUTION: To prevent possible shorts to adjacent
terminals, use care when securing and routing
your thermostat wires.
Feed all wires vertically into the hole or slit in the center
of the backplate. Referencing the photo of the previous
wiring configuration or the wire labels currently on the
wires, insert the wires one-by-one into the matching
terminals, and use the supplied flathead screwdriver to
close each terminal. After you have finished fastening the
wires, pull each wire gently to ensure they are secure.
Repeat this process for each wire to be installed.
(W2) 2nd Stage Heating
2nd Stage Compressor
Reversing Valve
Humidifier/Dehumidifier
Note: The color of your wires may not be the same as shown in this User Guide
3
(1)Emergency heat activated at W1, (2)Auxiliary heat activated at W2,
(3)Only to be used with Bosch WSHP)
BCC100 Terminal Key
----
Not Used
G
Fan
W2
2
Y2
O/B
H/DH
Jumper
Data
Alarm Input
3
C
Common
W/E (W1)
1st Stage Heating
1
Y (Y1)
1st Stage Compressor
RH
Heating Appliance Power
RC (R)
Cooling Appliance Power