Wiring Connection
Wiring Example
• This unit can be used as part of the combined operation system used together with indoor units
(Multi-V system air conditioners), or as an independent system for processing outside air.
<Combined operation system with Multi-V system(connected with ventilation units and stan-
dard indoor units in a single refrigerant circuit)>
LGAP Network System
12V
GND
SIGNAL
Communication line
Combined operated system
CAUTION
When this ventilation unit is combined with Multi V Plus 2 Series, sometimes the system does not
cooling operate for self protection in low ambient temperature when the capacity of IDU, which is con-
nected to ventilation unit, is less than or equal to 10% of total capacity of all IDUs. In this case, the
capacity of the IDU connected to ventilation unit should be higher than 10% of total capacity of all
IDUs
<Independent system (connected only with a ventilation unit in a single refrigerant circuit)>
LGAP Network System
Communication line
Independent system
26 Ventilator