Daikin Altherma ERHQ011BAV3 Installation Manual

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Daikin Altherma ERHQ011BAV3 Installation Manual Manual pdf 21 page image

ERHQ011~016BAV3+W1 + ERLQ011~016CAV3+W1Outdoor unit for air to water heat pump4PW57794-1A – 05.2011Installation manual185 Once operation stops (after 3 to 5 minutes), close the liquid stopvalve and the gas stop valve.6 The pump down operation is now finished. The remote controllermay display "U4" and the indoor pump may continue operating.This is not a malfunction. Even when the ON button on theremote controller is pressed, the unit will not start to operate. Torestart operation of the unit turn off the main power supplyswitch and turn it on again.7 Turn off the main power supply switch.14. ELECTRICAL WIRING WORK14.1. Precautions on electrical wiring work■ Use only copper wires.■ A main switch or other means for disconnection, having acontact separation in all poles, must be incorporated in the fixedwiring in accordance with applicable legislation.Do not turn on the main switch until all the wiring is completed.■ Never squeeze bundled cables into a unit.■ Fix cables so that cables do not make contact with the pipes(especially on high pressure side).■ Secure the electrical wiring with cable ties as shown in the figurein chapter "14.2. Connecting power supply and interunit wiring"on page 18 so that it does not come in contact with the piping,particularly on the high-pressure side.Make sure no external pressure is applied to the terminalconnectors.■ When installing the earth leakage circuit breaker make sure thatit is compatible with the inverter (resistant to high frequencyelectrical noise) to avoid unnecessary opening of the earthleakage circuit breaker.■ 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.14.2. Connecting power supply and interunit wiring■ Secure the earth wire to the stop valve attachment plate so thatit does not slide.■ Secure the earth wire to the stop valve attachment plate onemore time along with the electric wiring and the inter-unit wiring.■ Lay the electrical wiring so that the front cover does not rise upwhen doing wiring work and attach the front cover securely.1 Switch box2 Stop valve attachment plate3 Earth4 Cable tie5 Wiring between units6 Power supply and earth wiringOnly if bottom plate heater applicable (optional for ERHQ)7 Bottom plate heater cable8 Power supply of bottom plate heater (from indoor unit)WARNINGMake sure to re-open both stop valves before restartingoperation of the unit.WARNING■ All wiring must be performed by an authorizedelectrician.■ All components procured on the site and all electricconstruction shall comply with the applicablelegislation.DANGER: HIGH VOLTAGETo avoid electrical shock, make sure to disconnect thepower supply 1 minute or more before servicing theelectrical parts. Even after 1 minute, always measure thevoltage at the terminals of main circuit capacitors orelectrical parts and, before touching, make sure that thosevoltages are 50 V DC or less.NOTICETo persons in charge of electrical wiring work:Do not operate the unit until the refrigerant piping iscomplete. (Running it before the piping is ready will breakthe compressor.)DANGER■ Before obtaining access to terminal devices, all supplycircuits must be interrupted.■ Be sure to install an earth leakage circuit breaker inaccordance with applicable legislation. Failure to doso may cause electrical shock.CAUTIONBe sure to install the required fuses or circuit breakers.INFORMATIONERLQ units control the bottom plate heater internally (nofield wiring applicable).433321V3 W15864 75867