Daikin EKHBRD011ADV1 Installation Manual

Also see for EKHBRD011ADV1: Operation manual

Installation manual5 EKHBRD011~016ADV1+Y1Indoor unit for air to water heat pump system4P402191-1A – 2015.04Application examples with 2 different heat sources(auxiliary boiler + EKHBRD unit)When using 2 heat sources, it is recommended to use a balancingbottle as follows: Application 5Space heating with an auxiliary boiler (alternating operation)Space heating application by either the Daikin indoor unit or byan auxiliary boiler connected in the system. An auxiliary contactdecides whether either the EKHBRD* indoor unit or the boilerwill operate. This auxiliary contact can e.g. be an outdoortemperature thermostat, an electricity tariff contact, a manuallyoperated contact, etc.Bivalent operation is only possible for space heating operation,not for the domestic hot water heating operation. Domestic hotwater in such an application is always provided by the domestichot water tank which is connected to the Daikin indoor unit.The auxiliary boiler must be integrated in the piping work and inthe field wiring according to the illustrations below. Field wiring OperationWhen the room thermostat (th) closes, either the EKHBRD*unit or the boiler starts operating, depending on the positionof the auxiliary contact (C). Be sure that the boiler and the integration of theboiler in the system is in accordance withrelevant European and national regulations. Daikin can not be put responsible for incorrect orunsafe situations in the boiler system.1 Outdoor unit 12 Shut-off valve2 Indoor unit 13 Non-return valve(field supply)3 Electronic expansionvalve 14 Pump (field supply)4 Refrigerant heatexchanger15 Collector (field supply)16 By-pass valve(field supply)5 Water heat exchanger6 Pump 17 Shut off valve (fieldsupply)7 Motorised 3-way valve(optional) 18 Radiator (field supply)8 Domestic hot watertank (optional)19 Aquastat valve(field supply)9 Compressor 20 Shut-off valve(field supply)10 Boiler (field supply)11 Balancing bottle(field supply)C1 Remote controllerA Installation placeB Living room3 34 5 6 82111M912127C1151613 1320201910A B1417 18Boiler thermostat Boiler thermostatC Auxiliary contact (normal closed)th Heating only room thermostatK1A Auxiliary relay for activation of EKHBRD* unit(field supply)K2A Auxiliary relay for activation of boiler (fieldsupply)NOTE Make sure that auxiliary contact (C) hassufficient differential or time delay so as toavoid frequent changeover between theEKHBRD* unit and the boiler. If theauxiliary contact (C) is an outdoortemperature thermostat, make sure toinstall the thermostat in the shade, so thatit is not influenced or turned ON/OFF bythe sun.Frequent switching may cause corrosionof the boiler in an early stage. Contact themanufacturer of the boiler. During heating operation of the EKHBRD*unit, the unit will operate so as to achievethe target leaving water temperature asset on the user interface. When weatherdependent operation is active, the watertemperature is determined automaticallydepending on the outdoor temperature.During heating operation of the boiler, theboiler will operate so as to achieve thetarget leaving water temperature as seton the boiler controller.Never set the target leaving watertemperature set point on the boilercontroller above 80°C.Make sure that return water to the EKHBRD* heatexchanger never exceeds 80°C.For this reason, never put the target leaving watertemperature set point on the boiler controllerabove 80°C and install an aquastat (a) valve in thereturn water flow of the EKHBRD* unit.Make sure that the non-return valves (field supply)are correctly installed in the system.Make sure that the room thermostat (th) is notfrequently turned ON/OFF.Daikin shall not be held liable for any damageresulting from failure to observe this rule.(a) The aquastat valve must be set for 80°C and must operate to close thereturn water flow to the unit when the measured temperature exceeds80°C. When the temperature drops to a lower level, the aquastat valvemust operate to open the return water flow to the EKHBRD* unitagain.1 2 3 4 5K1AK1A K2AX YK2ABoilerthermostatLthNEKHBRD*/auto / BoilerCEKHBRD*A8P