Daikin ERHQ011BA Installer's Reference Manual

Also see for ERHQ011BA: Installer's reference guide

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EHBH/X16Daikin Altherma - Low Temperature Split4P313776-1 – 2012.05Installer reference guide186 PreparationExampleIf the configuration is as follows:Q Power limitation level does NOT allow operation of both boosterheater and backup heater (step 1 and step 2).Q Heater priority = Booster heater.Then power consumption is limited as follows:5.7 Setting up an external temperature sensorYou can connect one external temperature sensor. It can measurethe indoor or outdoor ambient temperature. Daikin recommends touse an external temperature sensor in the following cases:Indoor ambient temperatureQ In room thermostat control, the user interface is used as roomthermostat and it measures the indoor ambient temperature.Therefore, the user interface must be installed on a location:Q Where the average temperature in the room can bedetectedQ That is NOT exposed to direct sunlightQ That is NOT near a heat sourceQ That is NOT affected by outside air or air draught becauseof, for example, door opening/closingQ If this is NOT possible, Daikin recommends to connect a remoteindoor sensor (option KRCS01-1).Q Setup: For installation instructions, see the installation manual ofthe remote outdoor sensor.Q Configuration: Select room sensor [A.2.2.B].Outdoor ambient temperatureQ In the outdoor unit, the outdoor ambient temperature ismeasured. Therefore, the outdoor unit must be installed on alocation:Q At the north side of the house or at the side of the housewhere the most heat emitters are locatedQ That is NOT exposed to direct sunlightQ If this is NOT possible, Daikin recommends to connect a remoteoutdoor sensor (option EKRSCA1).Q Setup: For installation instructions, see the installation manual ofthe remote outdoor sensor.Q Configuration: Select outdoor sensor [A.2.2.B].Q During suspend (see configuration), the outdoor unit is turneddown to reduce the standby energy losses. As a result, theoutdoor ambient temperature is NOT read out.Q If the desired leaving water temperature is weather dependent,the full time outdoor temperature measurement is important.This is another reason to install the optional outdoor ambienttemperature sensor.6 Preparation6.1 Preparing installation siteDo NOT install the unit in places often used as work place. In case ofconstruction works (e.g. grinding works) where a lot of dust iscreated, the unit must be covered.Choose the installation location with sufficient place for carrying theunit in and out of the site.6.1.1 Installation site requirements of the indoorunitQ Mind the measurement guidelines:Q Mind the following spacing installation guidelines:Ph Produced heatC e Consumed energyA Outdoor unitB Booster heaterC Backup heatera Limited outdoor unit operationb Full outdoor unit operationc Booster heater turned ONd Backup heater step 1 turned ONe Backup heater step 2 turned ONPhC eabcdeA B CINFORMATIONThe external outdoor ambient sensor data (either averagedor instantaneous) is used in the weather-dependent controlcurves and in the automatic heating/cooling changeoverlogic. To protect the outdoor unit, the internal sensor of theoutdoor unit is always used.Maximum refrigerant piping length between indoorunit and outdoor unit 75 m (a)Minimum refrigerant piping length between indoorunit and outdoor unit 3 m (b)Maximum height difference between indoor unit andoutdoor unit30 mMaximum distance between the 3-way valve andthe indoor unit (for installations with domestic hotwater tank)3 mMaximum distance between the domestic hot watertank and the indoor unit (for installations withdomestic hot water tank)10 m(a) Check the outdoor unit installation manual.(b) When <5 m, you need to recharge the outdoor unit (check theoutdoor unit installation manual).≥115020020010 10 500(mm)