VRV SYSTEM Inverter Air Conditioners Installation manual A foundation of insufficient strength may result in the equip- CONTENTS ment falling and causing injury. • Carry out the specified installation work after taking into 1. SAFETY PRECAUTIONS..........1 account strong winds, typhoons or earthquakes. 2.
• Do not install the air conditioner in the following locations: 2-2 ACCESSORIES Where there is a high concentration of mineral oil spray Check the following accessories are included with your unit. or vapour (e.g. a kitchen). Metal Drain Insulation Plastic parts will deteriorate, parts may fall off and water Sealing pad Name...
Is something blocking the air It may result in insufficient outlet or inlet of either the cooling. indoor or outdoor units? Are refrigerant piping length *300 The refrigerant charge in the and additional refrigerant 300 or system is not clear. more charge noted down? more...
PREPARATIONS BEFORE INSTALLATION (3) Open the installation hole. (Pre-set ceilings) • Once the installation hole is opened in the ceiling where (1) Confirm the positional relationship between the unit the unit is to be installed, pass refrigerant piping, drain and suspension bolts. (Refer to Fig. 2) piping, transmission wiring, and remote controller wiring •...
Main unit Attach the filter to the Force main unit while pushing down on the bends. Filter Level Force Vinyl tube (4) Tighten the upper nut. REFRIGERANT PIPING WORK For refrigerant piping of outdoor units, see the installation manual attached to the outdoor unit. Execute heat insulation work completely on both sides of the gas piping and the liquid piping.
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• Refer to Table 1 for tightening torque. CAUTION Table 1 Be sure to insulate any field piping all the way to the piping connection inside the unit. Any exposed piping may cause Pipe Flare dimen- Tightening torque Flare shape condensation or burns if touched.
DRAIN PIPING WORK Large sealing pad (5) Metal clamp (1) CAUTION (accessory) (accessory) • Make sure all water is out before making the duct connection. Metal clamp (1) (accessory) (1) Install the drain piping. Tape Drain hose (2) ≤4mm (accessory) Drain socket Fig.
INSTALLING THE DUCT 1. Remove the control box lid. Connect the remote controller and power supply (single-phase, 50 Hz 220-240 V or sin- Connect the duct supplied in the field. gle-phase, 60Hz 220V) respectively to the terminal block Air inlet side and securely connect the earth also (as shown in the figure •...
ELECTRIC WIRING WORK • The length of the transmission wiring and remote controller wiring are as follows. 9-1 GENERAL INSTRUCTIONS Length of the transmission wiring and remote controller wiring • Shut off the power before doing any work. Max. 1000m Outdoor unit –...
10. WIRING EXAMPLE CAUTION 10-1 HOW TO CONNECT WIRINGS • Be sure to attach power supply wiring and earth wire to the control box with the clamp. • Wire only after removing the control box lid as shown in • When doing the wiring, make sure the wiring is neat and Fig.
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• Remote controller and transmission wiring No. 1 system When using 1 remote controller for Pull the wires into the unit through the wiring through hole 1 indoor unit and connect to the terminal block (6P). Power supply Power supply Power supply single phase single phase...
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No. 3 system When including BS unit 10-2 CONTROL BY 2 REMOTE CONTROLLERS (Con- trolling 1 indoor unit by 2 remote controllers) Power supply single phase • When using 2 remote controllers, one must be set to “MAIN” 50Hz 220-240V and the other to “SUB”.
[ PRECAUTIONS ] 11-1 SETTING THE STATIC PRESSURE SELECTION • Crossover wiring is needed when using group control and • Select the SECOND CODE NO. for the resistance of the con- 2 remote controllers at the same time. nected duct. •...
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11-4 SETTINGS FOR SEPARATELY SOLD ACCESSORIES • See the instruction manuals included with separately sold accessories for the necessary settings. When using a wireless remote controller • A wireless remote controller address needs to be set when using a wireless remote controller. See the installation man- ual included with the wireless remote controller for details on how to make the settings.
12. WIRING DIAGRAM : FIELD WIRING : BLACK : PURPLE : CONNECTOR : BLUE : RED : WIRE CLAMP : BROWN : WHITE : PROTECTIVE EARTH (SCREW) : GREY : YELLOW : LIVE : ORANGE : GREEN : NEUTRAL : PINK INDOOR UNIT RECEIVER/DISPLAY UNIT A1P......PRINTED CIRCUIT BOARD...