Daikin CMSQ200A7W1B Installation Manual

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CMSQ200+250A7W1BAir conditioning system4PW47543-1Installation manual118.2. Power circuit and cable requirementsA power circuit (see table below) must be provided for connection ofthe unit. This circuit must be protected with the required safetydevices, i.e. a main switch, a slow blow fuse on each phase and anearth leakage breaker.When using residual current operated circuit breakers, be sure to usea high-speed type 300 mA rated residual operating current.Point for attention regarding quality of the public electric powersupplyThis equipment complies with respectively:■ EN/IEC 61000-3-11 (1) provided that the system impedance Z sysis less than or equal to Z max and■ EN/IEC 61000-3-12 (2) provided that the short-circuit power S scis greater than or equal to the minimum S sc valueat the interface point between the user's supply and the publicsystem. It is the responsibility of the installer or user of the equipmentto ensure, by consultation with the distribution network operator ifnecessary, that the equipment is connected only to a supply withrespectively:■ Z sys less than or equal to Z max and■ S sc greater than or equal to the minimum S sc value.Be sure to install a main switch for the complete system.8.3. General cautions■ Up to 3 units can be connected by crossover power sourcewiring between outdoor units. However, units of smaller capacitymust be connected downstream. For details, refer to thetechnical data.■ Make sure to connect the power source wire to the powersource terminal block and to clamp it as shown in figure 16 anddescribed in chapter "8.7. Field line connection: power wiring"on page 13.■ For conditional connections, refer to the Technical Data.■ As this unit is equipped with an inverter, installing a phaseadvancing capacitor not only will deteriorate power factorimprovement effect, but also may cause capacitor abnormalheating accident due to high-frequency waves. Therefore, neverinstall a phase advancing capacitor.■ Keep power imbalance within 2% of the supply rating.• Large imbalance will shorten the life of the smoothingcapacitor.• As a protective measure, the product will stop operating andan error indication will be made, when power imbalanceexceeds 4% of the supply rating.■ Follow the "electrical wiring diagram" supplied with the unit whencarrying out any electrical wiring.■ Only proceed with wiring work after all power is shut off.■ Always ground wires. (In accordance with national regulations ofthe pertinent country.)■ Do not connect the ground wire to gas pipes, sewage pipes,lightning rods, or telephone ground wires. This may causeelectric shock.• Combustion gas pipes: can explode or catch fire if there is agas leak.• Sewage pipes: no grounding effect is possible if hard plasticpiping is used.• Telephone ground wires and lightning rods: dangerous whenstruck by lightning due to abnormal rise in electrical potentialin the grounding.■ This unit uses an inverter, and therefore generates noise, whichwill have to be reduced to avoid interfering with other devices.The outer casing of the product may take on an electrical chargedue to leaked electrical current, which will have to be dischargedwith the grounding.■ Be sure to install an earth leakage breaker. (One that canhandle high-frequency electrical noise.)(This unit uses an inverter, which means that an earth leakagebreaker capable of handling high-frequency electrical noisemust be used in order to prevent malfunctioning of the earthleakage breaker itself.)■ Earth leakage breakers that are especially designed forprotecting ground-faults must be used in conjunction with mainswitch and fuse for use with wiring.■ Never connect the power supply in reversed phase.The unit can not operate normally in reversed phase. If youconnect in reversed phase, replace two of the three phases.■ This unit has a reverse phase detection circuit. (If it is activated,only operate the unit after correcting the wiring.)■ Power supply wires must be attached securely.■ If the power supply has a missing or wrong N-phase, equipmentwill break down.■ Make sure that all wiring is secure, the specified wires are used,and no external forces act on the terminal connection or wires.■ Improper connections or installation may result in fire.■ When wiring the power supply and connecting the remotecontroller wiring and transmission wiring, position the wires sothat the control box lid can be securely fastened.Improper positioning of the control box lid may result in electricshocks, fire, or overheating of the terminals.8.4. System examples(See figure 11)Phase andfrequency VoltageMinimumcircuitampereRecommendedfusesTransmission linesectionCMSQ200 3 N~50 Hz 400 V 11.9 A 16 A 0.75~1.25 mm 2CMSQ250 3 N~50 Hz 400 V 18.5 A 25 A 0.75~1.25 mm 2NOTE The above table indicates power specifications forstandard combinations. See "1. Introduction" onpage 1.(1) European/International Technical Standard setting the limits for voltage changes,voltage fluctuations and flicker in public low-voltage supply systems for equipmentwith rated current ≤75 A.(2) European/International Technical Standard setting the limits for harmonic currentsproduced by equipment connected to public low-voltage systems with inputcurrent >16 A and ≤75 A per phase.Z max (Ω) Minimum S sc valueCMSQ200 — —CMSQ250 — 1218 kVANOTE ■ Select the power supply cable in accordance withrelevant local and national regulations.■ Wire size must comply with the applicable localand national code.■ Specifications for local wiring power cord andbranch wiring are in compliance with IEC60245.■ WIRE TYPE H05VV(*)*Only in protected pipes (use H07RN-F whenprotected pipes are not used).1 Field power supply2 Main switch3 Earth leakage breaker4 Outdoor unit5 Indoor unit6 Remote controllerPower supply wiring (sheathed cable) (230 V)Transmission wiring (sheathed cable) (16 V)