DC INVERTER MULTI VRF CONTROL
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C. Connection of communication modules
COM 1 of communication module can connect with indoor and outdoor unit. The two COM2 can connect with
other communication module or centralized controller. As shown in the following figure:
D. Connection between communication module and indoor and outdoor units
According to the net diagram, connect the communication line between indoor unit and outdoor unit. Then cut
off the communication line between the mainboards of indoor unit and outdoor unit, as shown below.
Align the cutting terminals and terminals of communication line to COM1, as shown below:
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