Daikin EKHBX030BA Installation Manual

Also see for EKHBH030BA: Operation manual

EKHBH/X030BAIndoor unit for air to water heat pump system4PW62568-1 – 07.2010Installation manual5Domestic water heatingWhen domestic water heating mode is enabled (either manually bythe user, or automatically through a schedule timer) the targetdomestic hot water temperature will be achieved by a combination ofthe heat exchanger coil and the electrical booster heater.When the domestic hot water temperature is below the userconfigured set point, the 3-way valve will be activated to heat thedomestic hot water by means of the heat pump. In case of largedomestic hot water demand or a high domestic hot watertemperature setting, the booster heater (11) can provide auxiliaryheating.Application 3Space cooling and heating application with the room thermostat setfor heating/cooling connected to the indoor unit. Heating is providedthrough floor heating loops and fan coil units. Cooling is providedthrough the fan coil units only.Domestic hot water is provided through the domestic hot water tankwhich is connected to the indoor unit.Pump operation and space heating and coolingAccording to the season, the customer will select cooling or heatingon the room thermostat (T). This selection is not possible byoperating the user interface.When space heating/cooling is requested by the room thermostat(T), the pump will start operating and the indoor unit (2) will switch to"heating mode"/"cooling mode". The outdoor unit (1) will startoperating to achieve the target leaving hot/cold water temperature.In case of cooling mode, the 2-way valve (13) will close as to preventcold water running through the floor heating loops (FHL).The ON/OFF setting of the heating/cooling operation is done by theroom thermostat and cannot be done by the user interface on theindoor unit.Domestic water heatingDomestic water heating is as described under "Application 2" onpage 4.Application 4Space cooling and heating application without the room thermostatconnected to the indoor unit, but with the heating only roomthermostat (set heating only) controlling the floor heating and theheating/cooling thermostat (set heating/cooling) controlling the fancoil units. Heating is provided through floor heating loops and fan coilunits. Cooling is provided through the fan coil units only.NOTE The indoor unit can be configured so that at lowoutdoor temperatures the domestic hot water isexclusively heated by the booster heater. This assuresthat the full capacity of the heat pump is available forspace heating.Details on domestic hot water tank configuration forlow outdoor temperatures can be found under "Fieldsettings" on page 25, field settings [5-02] to [5-04].1 Outdoor unit 10 Domestic hot water tank(optional)2 Indoor unit3 Heat exchanger 11 Booster heater4 Pump 12 Heat exchanger coil5 Shut-off valve 13 Motorised 2-way valve(field supply)6 Collector (field supply)7 Shut-off valve FCU1..3 Fan coil unit (optional)8 Motorised 3-way valve(delivered withdomestic hot watertank)FHL1..3 Floor heating loopT Room thermostat withheating/cooling switch(optionalM MFHL1TFHL2FHL3FCU1FCU2FCU354321678 131011 12NOTE Make sure to connect the thermostat wires to thecorrect terminals (see "Connection of the thermostatcable" on page 19) and to configure the DIP switchtoggle switches correctly (see "Room thermostatinstallation configuration" on page 23).NOTE Wiring of the 2-way valve (13) is different for a NC(normal closed) valve and a NO (normal open) valve!Make sure to connect to the correct terminal numbersas detailed on the wiring diagram.MFCU1FCU2FCU3T4 T5T6FHL1FHL2FHL3T543216713M14 69