Daikin FXSQ20M8V3B Installation And Operation Manual

Contents

remote controller

FXSQ20~125M8V3BVRV System air conditioners4PW25083-1CInstallation and operation manual6WIRING EXAMPLE AND HOW TO SET THEREMOTE CONTROLLERHow to connect wiringFrom the outside of the unitRemove the switch box cover as shown in figure 11b, and make theconnections.From the inside of the unitRemove the small bottom plate and the interchangeable plate (incase of rear suction) or the air filter holding plate (in case of bottomsuction). Lower the switch box as shown in figure 11c. Put the wiresthrough the wiring ports of the switch box cover before connectingthem.PRECAUTIONS1 Observe the notes mentioned below when wiring to the powersupply terminal board.- Do not connect wires of different gauge to the same powersupply terminal. (Looseness in the connection may causeoverheating.)- When connecting wires of the same gauge, connect themaccording to the figure.2 Keep total current of crossover wiring between indoor units lessthan 12 A. Branch the line outside the terminal board of the unitin accordance with electrical equipment standards, when usingtwo power wiring of a gauge greater than 2 mm 2 (Ø1.6).The branch must be sheathed in order to provide an equal orgreater degree of insulation as power supply wiring itself.3 Do not connect wires of different gauge to the same groundingterminal. Looseness in the connection may deteriorate theprotection.4 Remote controller cords and wires connecting the units shouldbe located at least 50 mm away from power supply wiring. Notfollowing this guideline may result in malfunction due toelectrical noise.5 For the remote controller wiring, refer to the "Installation manualof the remote controller" supplied with the remote controller.6 Never connect the power supply wiring to the terminal board fortransmission wiring. This mistake could damage the entiresystem.7 Use only specified wires and tightly connect wires to theterminals. Be careful that wires do not place external stress onthe terminals. Keep wiring in neat order so that they do notobstruct other equipment such as popping open the switch boxcover. Make sure the cover closes tight. Incomplete connectionscould result in overheating, and in the worse case, electric shockor fire.Setting of static pressure changeover connector■ According to the systems static pressure requirement, repositionthe adaptors of the PC board inside the switch box as shown inthe figure.WIRING EXAMPLEFit the power supply wiring of each unit with a switch and fuse asshown in figure 19.Complete system example (3 systems)When using 1 remote controller for 1 indoor unit (Normal operation)(See figure 12)For group control or use with 2 remote controllers (See figure 14)When including BS unit (See figure 16)1 Small bottom plate2 Air filter holding plate3 Switch box4 Interchangeable plate5 Square hole (covered by the switch box cover)FXSQ20~63 FXSQ80~125Lownot availableStandardHigh1 Black wire2 Blue wireNOTE The unit is factory set for standard static pressure(X4A) at the time of shipping.1 Power supply2 Main switch3 Power supply wiring4 Transmission wiring5 Switch6 Fuse7 BS unit REYQ only8 Indoor unit9 Remote controller1 Outdoor unit2 Indoor unit3 Remote controller (optional accessories)4 Most downstream indoor unit5 For use with 2 remote controllers6 BS unitNOTE It is not necessary to designate an indoor unit addresswhen using group control. The address isautomatically set when the power is activated.X6AX7AX5AX4AX3A1 2X6AX7AX5AX4AX3A1 2X7AX4AX3A1 2X6AX7AX5AX4AX3A1 2X7AX4AX3A1 2