Connection Of Communication Line Of Idu And Odu - Gree Fresh Air Series Owner's Manual

Multi Variable Air Conditioners Fresh Air Series Indoor Unit
(1) Detach the electric box lid.
(2) Let the power cord pass through the wiring through-holes.
(3) Connect wires according to Fig. 5.2.1.
(4) Fix the power cord with wiring clamp.

5.3 Connection of Communication Line of IDU and ODU

(1) Detach the electric box lid.
(2) Let the Communication cable pass through the wiring through-holes.
(3) Connect the communication wire to terminal D1 and D2 of indoor 4-bit wiring board, as shownin
Fig 5.3.1.
(4) Fix the communication cable with clamp of electric box.
(5) For more reliable communication, make sure connect the terminal resistor to the most
downstream IDU of the communication bus (terminal D1 and D2), as shown in Fig 5.3.2,
terminal resistor is provided with each ODU.
Fig 5.2.1
Fig 5.3.1
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