Daikin EKHBX008BB3V3S Installation Manual

Contents

Daikin EKHBX008BB3V3S Installation Manual Manual pdf 9 page image

EKHBX008BB3V3SIndoor unit for air to water heat pump system4PW62597-1 – 10.2010Installation manual6Application 3Space heating and cooling 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.1 Outdoor unit2 Indoor unit3 Heat exchanger4 Backup heater (1)5 Pump (field supply)6 Shut-off valve7 Motorised 3-way valve (delivered with domestic hot watertank)8 Motorised 2-way valve (field supply)9 Collector (field supply)10 Domestic hot water tank (optional)11 Booster heater (2)12 Heat exchanger coilFCU1...3 Fan coil unit (optional)FHL1...3 Floor heating loopT Room thermostat (optional)Pump operation and space heating and coolingAccording to the season, the customer will select heating or coolingon 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 (8) 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 heating (3)Domestic water heating is as described under "Application 2" onpage 5.Application 4Space heating and cooling 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.1 Outdoor unit2 Indoor unit3 Heat exchanger4 Backup heater5 Pump (field supply)6 Shut-off valve7 Motorised 2-way valve to shut off the floor heating loopsduring cooling operation (field supply)8 Motorised 2-way valve for activation of the room thermostat(field supply)9 Collector (field supply)10 By-pass valve (field supply)FCU1...3 Fan coil unit (optional)FHL1...3 Floor heating loopT Heating only room thermostat (optional)T4...6 Individual room thermostat for fan coil heated/cooled room(optional)(1) For tank without electrical booster heater (EKHTS), the backup heater willbe used in domestic water heating mode.(2) Only applicable for tank with built-in electrical booster heater (EKHW*).MFCU1FCU2FCU39MFHL1FHL2FHL31011 126432165 7 8TNOTICE■ Make sure to connect the thermostat wires to thecorrect terminals (see "Connection of the thermostatcable" on page 20) and to configure the DIP switchtoggle switches correctly (see "8.2. Room thermostatinstallation configuration" on page 24).■ Wiring of the 2-way valve (8) 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.(3) When the unit is configured for restricted power supply condition mode,see "Appendix" on page 50.T4T5T6T10MFCU1FCU2FCU39FHL1FHL2FHL36432165 7 8M