ESIE09-08 Outline of Control (Indoor Unit)Function 656.2 Simultaneous demand of space heating and domesticwater heatingSpace heating operation can be executed in 3 different ways: Remote controller leaving water temperature control External room thermostat Remote controller room temperature controlThe domestic water heating operation can be controlled in 2 different ways: Reheat operation:The reheat mode will prevent the domestic hot water from cooling down lower than a certaintemperature. When enabled the indoor unit will deliver hot water to the domestic hot watertank if the minimum value is reached and this according below described settings. *1 Storage operation:In this mode, the indoor unit will deliver hot water to the domestic hot water tank based on adaily pattern (day and/or night). The heated water is stored at a higher temperature so it canfulfill the domestic hot water requirements throughout the day. *2*1 Remark: This function can only be activated by the shower button. Shower icon should beled.*2 Remark: This function can only be set by field settings. This function can only be activated bythe schedule timer button and this icon should be led.Remote controller leaving water temperature controlWhen the reheat temperature is reached, the further heat up till storage temperature of thedomestic hot water tank will be decided by the running timers which are programmed by theinstaller.1. Reheat operationWhen requesting space heating and domestic water heating (reheat) at the same time, thisinvolves that the minimum reheat temperature is reached (setting [b-00]) during spaceheating operation. The 3-way valve will switch over to the domestic hot water side. Now, thedomestic water will be heated till maximum reheat temperature (setting [b-01]). The 3-wayvalve will switch back to original position, then space heating will start again. When adomestic hot water tank is installed, the reheat function is always available. The minimumdomestic hot water reheat temperature is 35°C and the maximum value is 75°C.A OperationSpace heatingDomestic water heatingB Domestic hot water reheat thermo-on requestC Domestic hot water tank temperatureD Leaving water thermo-on requestABCHJ75°C35°CONGFOFFD ONOFFM N
