2.8.8. Centralized draining method•••• Even when multiple outdoor units are installed to a wall, thedrain outlets can be concentrated into a single drain pipe.This makes installation easier and also improveappearance.2.9. A brand-new control method1. Easier power supply wiring connectionPower supply wiring and other wiring tasks can be carried out more easily.•••• Twin non-polar wires used to connect indoor and outdoor units.•••• Adoption of connection error prevention circuits for drive wires and signal wires. If a connection error is made, the relay doesnot operate and current does not flow to the circuit boards.2. Twin operation•••• Simultaneous air conditioning of wide spaces and corners is possible. Indoor units of same horsepowers can even be usedin combination.•••• Master unit and slave-units can be set automatically in twin systems. No address setting is necessary.•••• Multiple indoor units can be operated simultaneously with a single remote control. Note that individual operation is notpossible.3. Separate indoor/outdoor unit power suppliesThe power supply can be connected to (1) just the outdoor units, or (2) to both the indoor and outdoor units.4. Easy test operationTest operation can be carried out for both indoor and outdoor units.5. Automatic setting initialization function (Remote control and Indoor unit)In accordance with the indoor and outdoor units connected and the connection methods, conditions such as the connectionconfiguration (twin format) and remote-control functions such as automatic louvre operation and cooling or heating mode areautomatically detected and set instantly.9CS-F50DTE5 CU-L50DBE8