Daikin ERHQ011BA Installer's Reference Manual

Also see for ERHQ011BA: Installer's reference guide

Contents

EHBH/X16Daikin Altherma - Low Temperature Split4P313776-1 – 2012.05Installer reference guide247 Installation7.1.2 To open the switch box cover of the indoorunit7.2 Mounting the indoor unit7.2.1 To install the indoor unit7.2.2 To install the drain pan kitIf a drain pan kit (EKHBDPCA2) is required, install it beforeconnecting the refrigerant and water pipes and the electrical wiring.To install, see the installation manual of the drain pan kit.7.3 Connecting the water piping7.3.1 To connect the water pipingTo facilitate service and maintenance, 2 shut-off valves are provided.Mount the valves on the water inlet and on the water outlet. Mind theirthe position. Orientation of the integrated drain valves is important forservicing.1 Install the shut-off valves on the water pipes.2 Screw the indoor unit nuts on the shut-off valves.3 Connect the field piping on the shut-off valves4 In case of connection with the optional domestic hot water tank,see the installation manual of the domestic hot water tank.CAUTIONDo NOT grasp the piping to lift the indoor unit.4x2x2x60kg12 43NOTICEDo NOT use excessive force when connecting the piping.Deformation of the piping can cause malfunctioning of theunit.a Water inletb Water outletNOTICETo avoid damage to the surroundings in case of waterleakage, it is recommended to close the cold water inletstop valves during periods of absence.NOTICEQ A drain device and pressure relief device should beinstalled on the cold water inlet connection of thedomestic hot water cylinder.Q To avoid back siphonage, it is recommended to installa non-return valve on the water inlet of the domestichot water tank in accordance with the applicablelegislation.Q It is recommended to install a pressure reducing valveon the cold water inlet in accordance with theapplicable legislation.Q An expansion vessel should be installed on the coldwater inlet in accordance with the applicablelegislation.Q It is recommended to install the pressure relief valveon higher position as top of the domestic hot watertank.Heating of the domestic hot water tank causes waterto expand and without pressure relief valve the waterpressure inside the tank can rise above the tankdesign pressure. Also the field installation (piping,tapping points, etc.) connected to the tank is subjectedto this high pressure. To prevent this, a pressurerelieve valve needs to be installed.The overpressure prevention depends on the correctoperation of the field installed pressure relief valve. Ifthis is NOT working correctly, overpressure will deformthe tank and water leakage may occur. To confirmgood operation, regular maintenance is required.ab