Daikin EKHHEU200CV37 Use, Installation And Maintenance Manual

Page 22User, Installations and Maintenance Manual7.8.1 Remote connectionsThe equipment is designed to be connected to other remoteenergy systems or energy meters (solar thermal, photovoltaic,Off-Peak)INPUTS• Digital 1 (DIG1). Digital input for solar thermal (only for mod-els PCV3). In case of a solar thermal system with dedicatedcontrol unit, the latter can be connected to the equipment todeactivate the heat pump when there is energy productionfrom solar source. Having a voltage-free contact that closeswhen the solar system is active, it can be connected to thetwo white and brown wires of the 6-core cable supplied withthe equipment.Set the parameter P16 = 1 to activate the supplement withsolar thermal.• Digital 2 (DIG2). Digital input for photovoltaic. In case of aphotovoltaic system connected to the plant, it can be usedto subtract energy in the form of hot water in times of over-production. If there is a voltage-free contact, e.g. from the in-verter, which closes when there is overproduction of energy,it can be connected to the two green and yellow wires of the6-core cable supplied with the.equipment.Set the parameter P23 = 1 to activate the supplement withphotovoltaic.• Digital 3 (DIG3). Input for Off-Peak. This function, availableonly in some countries, allows the equipment to be activatedonly when there is a signal coming from outside with prefer-ential tariff. If the electric contactor has a voltage-free contactwhich closes when the preferential tariff is available, it can beconnected to the two gray and pink wires of the 6-core cablesupplied with the equipment.Set the parameter P24 = 1 to activate Off-peak in ECO modeor P24 = 2 for Off-peak in AUTO mode.• Analog input (PT1000) for solar collector probe.OUTPUTS230 Vac - 16 A relay output with N.O. contact. for solar thermal /DHW recirculation circulating pump (ON/OFF type).230 Vac - 5 A relay output with contact N.O. for solar collectorshutter / drain valve.Only for models PCV3Note: For more information on remote connections and theconfiguration of the equipment with these systems, see thepar. "8.5 OPERATING MODE” and "9.1.1 List of equipmentparameters”.7.8.1.1 Remote connectionFor the connection to the digital inputs the equipment is sup-plied with an additional 6-core cable already connected to thePCBA of the user interface (located inside the device). The re-mote connections to possible energy systems are the responsi-bility of the qualified installer (connection boxes, terminals andconnection cables).The following figures give an example of remote connection (fig.31 and fig. 32) which must not be longer than 3 m.fig. 31- Example of remote connection fig. 32