6 InstallationInstaller and user reference guide14FFA25~60A2VEB(9)Split system air conditioners4P550955-4 – 2018.08A ≤645 mm: In case of installation with BYFQ60B≤630 mm: In case of installation with BYFQ60CB 205 mm: In case of installation with BYFQ60B220 mm: In case of installation with BYFQ60Ca Metal clamp (accessory)b Drain hose (accessory)c Rising drain piping (vinyl pipe of 25 mm nominal diameterand 32 mm outer diameter) (field supply)d Hanging bars (field supply)▪ Combining drain pipes. You can combine drain pipes. Makesure to use drain pipes and T-joints with the correct gauge for theoperating capacity of the units.≥100A(mm)aA ≤645 mm: In case of installation with BYFQ60B≤630 mm: In case of installation with BYFQ60Ca T-jointTo connect the drain piping to the indoor unitNOTICEIncorrect connection of the drain hose might cause leaks,and damage the installation space and surroundings.1 Push the drain hose as far as possible over the drain pipeconnection.2 Tighten the metal clamp until the screw head is less than 4 mmfrom the metal clamp part.3 Check for water leaks (see "To check for water leaks" onpage 14).4 Install the insulation piece (drain pipe).5 Wind the large sealing pad (= insulation) around the metalclamp and drain hose, and fix it with cable ties.6 Connect the drain piping to the drain hose.≤4 mmAA'A-A'AA'f 652ce4ba dbadc 312~61a Drain pipe connection (attached to the unit)b Drain hose (accessory)c Metal clamp (accessory)d Large sealing pad (accessory)e Insulation piece (drain pipe) (accessory)f Drain piping (field supply)To check for water leaksThe procedure differs depending on whether electrical wiring isalready finished. When electrical wiring is not finished yet, you needto temporarily connect the user interface and power supply to theunit.When electrical wiring is not finished yet1 Temporarily connect electrical wiring.▪ Remove the control box cover (a).▪ Connect the single-phase power supply (50 Hz, 230 V) toconnections No. 1 and No. 2 on the terminal block for powersupply (d) and earth (c).▪ Reattach the control box cover (a).g gf d bc eei1×1×1 1a h2a Control box coverb Inter-unit wiringc Earth cabled Terminal block for power supplye Clampf Terminal board for transmission wiringg Opening for cablesh Wiring diagram label (on the back of the control box lid)i Remote controller wiring2 Turn ON the power.3 Start cooling operation (see "8.4 To perform a test run" onpage 20).4 Gradually pour approximately 1 l of water through the airdischarge outlet, and check for leaks.≥100 mmedcbaa Plastic watering canb Service drain outlet (with rubber plug). Use this outlet todrain water from the drain pan.c Drain pump locationd Drain pipe connectione Drain pipe5 Turn OFF the power.6 Disconnect the electrical wiring.▪ Remove the control box cover.▪ Disconnect the power supply and earth.▪ Reattach the control box cover.