Daikin EKHBX008BB3V3S Installation Manual

Contents

Daikin EKHBX008BB3V3S Installation Manual Manual pdf 8 page image

Installation manual5 EKHBX008BB3V3SIndoor unit for air to water heat pump system4PW62597-1 – 10.2010Application 2(1)Space heating only application without room thermostat connected tothe indoor unit. The temperature in each room is controlled by a valveon each water circuit. Domestic hot water is provided through thedomestic hot water tank which is connected to the indoor unit.1 Outdoor unit2 Indoor unit3 Heat exchanger4 Backup heater (2)5 Pump (field supply)6 Shut-off valve7 Motorised 3-way valve (delivered with domestic hot watertank)8 Collector (field supply)9 By-pass valve (field supply)10 Domestic hot water tank (optional)11 Booster heater (3)12 Heat exchanger coilFHL1...3 Floor heating loopT1...3 Individual room thermostat (optional)M1...3 Individual motorised valve to control the floor heating loop(field supply)Pump operationWith no thermostat connected to the indoor unit (2), the pump (5) canbe configured to operate either as long as the indoor unit is on, oruntil the required water temperature is reached.Space heatingThe outdoor unit (1) will operate to achieve the target leaving watertemperature as set on the user interface.Domestic 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 (4) or backupheater (5).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)(6) or backup heater (4)(7)can provide auxiliary heating.(1) When the unit is configured for restricted power supply condition mode,see "Appendix" on page 50.(2) For tank without electrical booster heater (EKHTS), the backup heater willbe used in domestic water heating mode.(3) Only applicable for tank with built-in electrical booster heater (EKHW*).INFORMATIONDetails on pump configuration can be found under"8.3. Pump operation configuration" on page 24.NOTICEWhen circulation in each space heating loop (FHL1...3) iscontrolled by remotely controlled valves (M1...3), it isimportant to provide a by-pass valve (9) to avoid the flowswitch safety device from being activated.The by-pass valve should be selected as such that at alltime the minimum water flow as mentioned under"6.7. Water pipework" on page 14 is guaranteed.It is recommended to select a pressure differencecontrolled by-pass valve.MFHL1FHL2FHL3M1T1M2T2M3T31011 1296432165 7 8(4) Only applicable for tank with built-in electrical booster heater (EKHW*).(5) Only applicable for tank without electrical booster heater (EKHTS).(6) Only applicable for tank with built-in electrical booster heater (EKHW*).(7) Only applicable for tank without electrical booster heater (EKHTS).INFORMATIONOnly for EKHW*:■ At low outdoor temperatures when space heatingdemand is higher, the indoor unit can be configured tohave the domestic hot water heated by the boosterheater exclusively. This assures that the full capacityof the heat pump is available for space heating.■ Details on domestic hot water tank configuration forlow outdoor temperatures can be found under"8.9. Field settings" on page 26, field settings [5-02] to[5-04].Only for EKHTS:■ At low outdoor temperatures when space heatingdemand is higher, the indoor unit can be configured tohave the domestic hot water heated the heat pumpand backup heater at the same time. This assuresthat the interruption of space heating is limited to aminimum.■ Details on domestic hot water tank configuration forlow outdoor temperatures can be found under"8.9. Field settings" on page 26, field settings [5-02] to[5-04].NOTICEBe sure that the correct field settings are active or selectedaccording to the applicable tank type. See field settings in"[4] Backup/booster heater operation and space heatingoff temperature" on page 28 for more details.