45
8×16＝128 台；Max. 8 pinboards can be equipped in each system and theoretically, max. quantity of indoor
units can be: 8×16＝128 sets;
3. Extra pinboards are needed when indoor units of the system are more than that of pinboards connecting.
Added pinboards can directly connect to previous pinboards.
ⅣConnection of communication lines
1. Connection for communication lines of indoor units and outdoor units
1.1 By directly connecting pinboards of outdoor units and mainboards of indoor units with communication
lines, outdoor units and indoor units communicate with each other. Communication lines adopt two-pin
twisted pair lines whose ends are three-pin XH plug The corresponding interface port of pinboards is CN4.
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