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The control board should look similar to the picture above. The control
board has wires with the same colours and thickness as the wires on
the thermostat. You will also find labelings similar to those at the
thermostat.
Step 4. Take a picture of your current control board wiring
Make sure you can see the terminal letters and identify the colour of
the wires in the photo.
Step 5. Label the wires
To install the CWA, you will need to disconnect the 4 wires (Y, G, R
and W) from the control board and connect them to the CWA. Label
the wires Y, G, R, and W. Note: If you don't have a W wire, the system
is still compatible. R can also be Rc.
Step 6. Disconnect the labeled wires from the control board
You may need to loosen the screw holding the wire to the control
board.
Step 7. Connect the labeled wires from the control board to the
CWA
Use the included screwdriver to tighten the screw after inserting each
wire to ensure it's securely connected.
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