Daikin Altherma EPGA11DAV3 Installation Manual

Also see for Altherma EPGA11DAV3: Installer's reference guide Installer's reference guide Installer's reference guide Installer's reference guide Installer's reference guide

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Daikin Altherma EPGA11DAV3 Installation Manual Manual pdf 9 page image

4 InstallationInstallation manual9EPGA11~16DAV3Daikin Altherma – Low temperature split4P556065-1 – 2018.10If… Then…The system does NOT contain adomestic hot water tankYou can use either propyleneglycol(a) or ethylene glycol(a) Propylene glycol, including the necessary inhibitors,classified as Category III according to EN1717.WARNINGEthylene glycol is toxic.NOTICEGlycol absorbs water from its environment. Therefore doNOT add glycol that has been exposed to air. Leaving thecap off the glycol container causes the concentration ofwater to increase. The glycol concentration is then lowerthan assumed. As a result, the hydraulic componentsmight freeze up after all. Take preventive actions to ensurea minimal exposure of the glycol to air.WARNINGDue to presence of glycol, corrosion of the system ispossible. Uninhibited glycol will turn acidic under theinfluence of oxygen. This process is accelerated by thepresence of copper and high temperatures. The acidicuninhibited glycol attacks metal surfaces and formsgalvanic corrosion cells that cause severe damage to thesystem. Therefore it is important that:▪ the water treatment is correctly executed by a qualifiedwater specialist,▪ a glycol with corrosion inhibitors is selected tocounteract acids formed by the oxidation of glycols,▪ no automotive glycol is used because their corrosioninhibitors have a limited lifetime and contain silicateswhich can foul or plug the system,▪ galvanized pipes are NOT used in glycol systems sincethe presence may lead to the precipitation of certaincomponents in the glycol's corrosion inhibitor.Adding glycol to the water circuit reduces the maximum allowedwater volume of the system. For more information, refer to thechapter "To check the water volume and flow rate" in the installerreference guide.NOTICEIf glycol is present in the system, setting [E-0D] must beset to 1. If the glycol setting is NOT set correctly, the liquidinside the piping can freeze.Freeze protection by freeze protection valvesWhen no glycol is added to the water, you can use freeze protectionvalves to drain the water from the system before it can freeze.▪ Install freeze protection valves (field supply) at all lowest points ofthe field piping.▪ Normally closed valves (located indoors near the piping entry/exitpoints) can prevent that all water from indoor piping is drainedwhen the freeze protection valves open.NOTICEWhen freeze protection valves are installed, do NOT selecta minimum cooling setpoint lower than 8°C (8°C=default).If lower, freeze protection valves can open during coolingoperation.Consult the installer reference guide of the unit for more detailedinformation.Heater tape (field supply)1 Install heater tape to the outdoor field piping.2 Provide external power supply for the heater tape.NOTICE▪ For the internal heater tape to operate, the power to theunit MUST be ON. For this reason, during cold periods,never disconnect the power, nor turn off the mainswitch.▪ In case of a power failure, power to the heater tape(both internal and external) will be aborted and thewater circuit will NOT be protected. To guarantee a fullprotection, it is always possible to add glycol to thewater circuit or to use freeze protection valves, evenwhen installing heater tape to the outdoor field piping.4.3.4 To insulate the water pipingThe piping in the complete water circuit MUST be insulated toprevent condensation during cooling operation and reduction of theheating and cooling capacity.Outdoor water pipingFor piping in free air, it is recommended to use the insulationthickness as shown in below table as a minimum (with λ=0.039 W/mK).Piping length (m) Minimum insulation thickness(mm)<20 1920~30 3230~40 4040~50 50For other cases the minimum insulation thickness can be determinedusing the Hydronic Piping Calculation tool.The Hydronic Piping Calculation tool also calculates the maximumhydronic piping length from the indoor unit to the outdoor unit basedon the emitter pressure drop or the other way around.The Hydronic Piping Calculation tool is part of the Heating SolutionsNavigator which can be reached via https://professional.standbyme.daikin.eu.Please contact your dealer if you have no access to HeatingSolutions Navigator.This recommendation ensures good operation of the unit, however,local regulations may differ and shall be followed.4.4 Connecting the electrical wiringDANGER: RISK OF ELECTROCUTIONWARNINGALWAYS use multicore cable for power supply cables.4.4.1 About electrical complianceOnly for EPGA11~16DAV3Equipment complying with EN/IEC 61000‑3‑12 (European/International Technical Standard setting the limits for harmoniccurrents produced by equipment connected to public low-voltagesystems with input current >16 A and ≤75 A per phase.).