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 8 page image

4 InstallationInstallation manual8EPGA11~16DAV3Daikin Altherma – Low temperature split4P556065-1 – 2018.104.3 Connecting the water piping4.3.1 To connect the water pipingaba Water inletb Water outletNOTICEAbout the shut-off valve with integrated filter (delivered asaccessory):▪ The installation of the valve at the water inlet ismandatory.▪ Mind the flow direction of the valve1 Connect the O-rings and shut-off valve to the outdoor unit waterinlet.2 Connect the field piping to the shut-off valve.3 Connect the field piping to the outdoor unit water outlet.NOTICEInstall air purge valves at all local high points.4.3.2 To fill the water circuitFor information on filling the water circuit, refer to the installationmanual of the indoor unit, or the installer reference guide.4.3.3 To protect the water circuit againstfreezingAbout freeze protectionFrost can damage the system. To prevent the hydraulic componentsfrom freezing, the software is equipped with special frost protectionfunctions such as water pipe freeze prevention and drain prevention(see installer reference guide) that include the activation of pump incase of low temperatures.However, in case of a power failure, these functions cannotguarantee protection.Do one of the following to protect the water circuit against freezing:▪ Add glycol to the water. Glycol lowers the freezing point of thewater.▪ Install freeze protection valves. Freeze protection valves drain thewater from the system before it can freeze.NOTICEIf you add glycol to the water, do NOT install freezeprotection valves. Possible consequence: Glycol leakingout of the freeze protection valves.Freeze protection by glycolAdding glycol to the water lowers the freezing point of the water.The required concentration depends on the lowest expected outdoortemperature, and on whether you want to protect the system frombursting or from freezing. To prevent the system from freezing, moreglycol is required. Add glycol according to the table below.INFORMATION▪ Protection against bursting: the glycol will prevent thepiping from bursting, but NOT the liquid inside thepiping from freezing.▪ Protection against freezing: the glycol will prevent theliquid inside the piping from freezing.Lowest expectedoutdoortemperaturePrevent fromburstingPrevent fromfreezing–5°C 10% 15%–10°C 15% 25%–15°C 20% 35%–20°C 25% —–25°C 30% —NOTICE▪ The required concentration might differ depending onthe type of glycol. ALWAYS compare the requirementsfrom the table above with the specifications provided bythe glycol manufacturer. If necessary, meet therequirements set by the glycol manufacturer.▪ The added concentration of glycol should NEVERexceed 35%.▪ If the liquid in the system is frozen, the pump will NOTbe able to start. Mind that if you only prevent thesystem from bursting, the liquid inside might still freeze.▪ When water is at standstill inside the system, thesystem is very likely to freeze and get damaged.The types of glycol that can be used depend on whether the systemcontains a domestic hot water tank:If… Then…The system contains a domestichot water tankOnly use propylene glycol(a)