Daikin ERHQ011BA Installer's Reference Manual

Also see for ERHQ011BA: Installer's reference guide

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Installer reference guide11 EHBH/X16Daikin Altherma - Low Temperature Split4P313776-1 – 2012.055 Application guidelinesConfiguration5.2.3 Multiple rooms – Two LWT zonesIf the heat emitters selected for each room are designed for differentleaving water temperatures, you can use different leaving watertemperature zones (maximum 2).In this document:Q Main zone = Zone with the lowest design temperature inheating, and the highest design temperature in coolingQ Additional zone = The other zoneTypical example:SetupQ For the main zone:Q A mixing valve station is installed before the under floorheating.Q The pump of the mixing valve station is controlled by theON/OFF signal on the indoor unit (X2M/5 and X2M/7;normal closed shut-off valve output).Q The room temperature is controlled by the user interface,which is used as room thermostat.Q For the additional zone:Q The heat pump convectors are directly connected to theindoor unit.Q The desired room temperature is set via the remotecontroller of the heat pump convectors for each room.Q The heating or cooling demand signals of each heat pumpconvector are connected in parallel to the digital input onthe indoor unit (X2M/1 and X2M/4). The indoor unit will onlysupply the desired additional leaving water temperaturewhen there is an actual demand.Q The user interface connected to the indoor unit decides thespace operation mode. Mind that the operation mode on eachremote controller of the heat pump convectors must be set tomatch the indoor unit.NOTICETo increase comfort and performance, Daikin recommendsto install the valve kit option EKVKHPC on each heat pumpconvector.Setting ValueUnit temperature control:Q #: [A.2.1.7]Q Code: [C-07]0 (LWT control): Unit operation isdecided based on the leavingwater temperature.Number of water temperaturezones:Q #: [A.2.1.8]Q Code: [7-02]0 (1 LWT zone): MainCAUTIONWhen there is more than one leaving water zone, you mustalways install a mixing valve station in the main zone todecrease (in heating)/increase (in cooling) the leavingwater temperature when the additional zone has demand.Room (zone)Heat emitters: DesigntemperatureLiving room (main zone) Under floor heating:Q In heating: 35°CQ In cooling: 20°C (onlyrefreshment, no real coolingallowed)Bed rooms (additional zone) Heat pump convectors:Q In heating: 45°CQ In cooling: 12°CA Additional leaving water temperature zoneB Room 1C Room 2D Main leaving water temperature zoneE Room 3a Remote controller of the heat pump convectorsb User interfacec Mixing valve stationBAa aCEDbc