| 摘要 |
<p>PURPOSE:To improve a utilization efficiency of an interface circuit by dividing a plurality of air conditioners into specific number of groups, and independently interfacing them. CONSTITUTION:A plurality of air conditioners (indoor units) groups 4-11-4-1n, 4-21-4-2n and a main controller 2 are serially connected via communication lines LM1, LM2 and an interface circuit. An interface unit of the circuit is interfaced independently of the divided groups 4-11-1-1n, 4-21-4-2n. Thus, utilization rate of the circuit connecting the units 4-11-4-1n, 4-21-4-2n of multiple systems is improved.</p> |
