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Figure 29. Typical Communication Wiring
Outdoor unit
(PQE)
Ground cable shield
DO NOT connect to E
Branch box
Refrigerant piping
Branch box
18 GA., stranded, 3-conductor, shielded control wire (polarity sensitive).
All shields of shielded cable connect to GROUND terminal, not to E.
Install a terminating resistor at the last indoor unit (terminals P and Q) of the daisy chain.
Typical Wiring Diagram, NEC/CEC and Local Codes apply.
P Q
Branch box
NOTE - Branch box does not require
power or communication wiring
Refrigerant
piping
After the system has been installed, the outdoor unit
will automatically assign addresses to all connected
indoor units. These addresses may be modifi ed
using an optional remote control as part of the
commissioning procedure.
Network Address and Commissioning
DIP switch 1 on SW-4 on the outdoor unit main
control is factory-set to ON.
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