Daikin EKHBX008BB3V3S Installation Manual

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Daikin EKHBX008BB3V3S Installation Manual Manual pdf 54 page image

Installation manual51 EKHBX008BB3V3SIndoor unit for air to water heat pump system4PW62597-1 – 10.2010Connection to benefit kWh rate power supplyFor applications with restricted power supply condition mode, it is notrecommended to connect the system to a benefit kWh rate powersupply.All items related to benefit kWh rate power supply should beneglected.3.4. Typical application examplesThe application examples given below are for illustration purposesonly and specifically for applications with restricted power supplycondition mode.Application 2Space 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 (1)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 (2)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 the heatexchanger coil, or the electrical booster heater (3) or backup heater (4).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 highdomestic hot water temperature setting, the booster heater (11)(5) orbackup heater (4) (6) provides heating.(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*).INFORMATIONDetails on pump configuration can be found under"8.3. Pump operation configuration" on page 24.APPENDIX (for restricted power supply condition mode only)MFHL1FHL2FHL3M1T1M2T2M3T31011 1296432165 7 8NOTICEWhen 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.(3) Only applicable for tank with built-in electrical booster heater (EKHW*).(4) Only applicable for tank without electrical booster heater (EKHTS).(5) Only applicable for tank with built-in electrical booster heater (EKHW*).(6) Only applicable for tank without electrical booster heater (EKHTS).INFORMATION■ See Information table "Balance between spaceheating/cooling demand and domestic hot waterdemand" on page 50.■ Be aware that all applications with domestic hot waterheating ("Application 3" on page 6 and "Application 5"on page 7) will have the same limitations as describedin this application.NOTICEBe sure that the correct field settings are active or selectedaccording to the applicable tank type. See field settings in"[4] Booster heater operation and space heating offtemperature" on page 53 for more details.