Connection Of Communication Wire Between Indoor Unit And Outdoor Unit (Or Indoor Unit); Connection Of Communication Wire For Wired Controller - Gree GMV-ND28ZD/B-T Owner's Manual

Multi Variable Air Conditioners Floor and Ceiling Type Indoor Unit
5.3 Connection of Communication Wire between Indoor Unit and
Outdoor Unit (or Indoor Unit)
For units with single-phase power supply.
(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
shown in Fig.5.3.1.
(4) Fix the communication cable with clamp of electric box.
(5) For more reliable communication, make sure connect the downstream IDU of the
communication bus (terminal D1 and D2), as shown in Fig.5.3.2, terminal resistor to
the most terminal resistor is provided with each ODU.

5.4 Connection of Communication Wire for Wired Controller

(1) Detach the electric box lid.
(2) Let the communication wire pass through the wiring through-holes.
(3) Connect the communication wire to terminal H1 and H2 of indoor 4-bit wiring board.
(4) Fix the communication wire with clamp.
(5) Wiring instructions of signal receiver and wired controller.
Fig.5.3.1
Fig.5.3.2
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