Gree GMV-VDR10PH/SA-S, Руководство пользователя

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ERV+DX coil
18
3.3.4 Selection of Communication Wire
Remark: When installing electrical, you need to replace the rubber ring on the
electrical box with the over-the-line rubber ring in the packaged parts.
(1) Connection of communication wire between indoor unit and outdoor unit
.
1) Detach the electric box cover of indoor unit.
2) Pass the communication wire through the rubber ring and tie it tightly with
the wire.
Figure 3-4 Diagram of electric box wiring
3) Connect the communication wire to terminal D1 and D2 of indoor 4-bit wiring
board, as shown in the following figure.
Figure 3-5 Diagram 1 of wiring board
4) Fix the communication cable with clamp of electric box.
5) In order to ensure the reliability of communication between IDU and ODU
and the communication among each IDU, add a matched resistance(-
supplied in a package before ex-factory) on the wiring board of the last
indoor unit in a series connection. The matched resistance should be
connected in parallel between terminal screw D1 and D2, as shown in the
following diagram.