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W415-4094 / 06.10.22
17
installation guide
EN
4.2.2 install the thermostat without a C-wire
(optional)
Power module requires your system to have the following wires:
• 4 wires: W/W1, Y/Y1, G, and R (or Rc or Rh)
• Or 3 wires: Y/Y1, G, and R (or Rc or Rh)
If you do not have these wires, your system may not be
compatible with the power module.
RC
RH G
C
Y1 Y2
W1
W2 O/B
RC
G
Y1
W1
RC
RH G
C
Y1 Y2
W1
W2 O/B
RC
G
Y1
W1
WSC-PWRM
Power Module
(Not Included)
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