Bosch BCC50 User Manual page 14

Wiring Diagrams
Combined Single Stage Heat and Single Stage Cool Furnace and Air
Conditioner
Ensure the system has a C-wire
Remove the pre-installed jumper wire from between RH and RC
Connect the R, C, W1 and G wires from the Furnace to RH, C, W/E
and G terminals on the wall plate, respectively
Connect the R, C, Y1 and G wires from the Air Conditioner to RC, C,
Y and G terminals on the wall plate, respectively
Humidifier or Dehumidifier Accessory with a Single Stage
Heat Pump
Note: The wiring configuration for humidifiers and dehumidifiers is the same for all type of
Heat Pump Systems
Ensure that the accessory is externally powered
Ensure the Heat Pump System is wired correctly
Connect the control wire of the accessory to the H/DH terminal
of the wall plate
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---- Data
G C
W2/
W/E
AUX
Y
Y2
RH
O/B
RC
H/DH
---- Data
G C
W2/
W/E
AUX
Y
Y2
RH
O/B
Jumper
RC
H/DH
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