Danfoss ECL Comfort 210 Installation Manual

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Installation Guide ECL Comfort 210 / 310, application A2662.0 Installation2.1 Before you startThe ECL Application key A266 contains 4 subtypes, A266.1,A266.2, A266.9 and A266.10 which are almost identical.The application A266.1 is very flexible. These are the basicprinciples:Heating (circuit 1):Typically, the flow temperature is adjusted according to yourrequirements. The flow temperature sensor (S3) is the mostimportant sensor. The desired flow temperature at S3 is calculatedin the ECL controller, based on the outdoor temperature (S1) andthedesiredroomtemperature. Thelowertheoutdoortemperature,the higher the desired flow temperature.Bymeansofaweekschedule,theheatingcircuitcanbein‘Comfort’or ‘Saving’ mode (two values for the desired room temperature).In Saving mode the heating can be reduced or switched off totally.The motorized control valve (M2) is opened gradually when theflow temperature is lower than the desired flow temperature andvice versa.The return temperature (S5) can be limited, for example not to betoo high. If so, the desired flow temperature at S3 can be adjusted(typically to a lower value), thus resulting in a gradual closing ofthe motorized control valve. Furthermore, the return temperaturelimitation can be dependent on the outdoor temperature.Typically, the lower the outdoor temperature, the higher theaccepted return temperature.In boiler-based heating supply the return temperature should notbe too low (same adjustment procedure as above).If the measured room temperature does not equal the desiredroom temperature, the desired flow temperature can be adjusted.The circulation pump, P2, is ON at heat demand or at frostprotection.The heating can be switched OFF when the outdoor temperature ishigher than a selectable value.A connected flow or energy meter based on pulses (S7) can limitthe flow or energy to a set maximum value. Furthermore thelimitation can be in relation to the outdoor temperature. Typically,the lower the outdoor temperature, the higher the accepted flow /power. When the A266.1 is used in an ECL Comfort 310 the flow /energy signal can alternatively come as an M-bus signal.Thefrostprotectionmodemaintainsaselectableflowtemperature,for example 10 °C.DHW (circuit 2):If the measured DHW temperature (S4) is lower than the desiredDHW temperature, the motorized control valve (M1) is openedgradually and vice versa.The return temperature (S6) can be limited to a fixed value.By means of a week schedule, the DHW circuit can be in ‘Comfort’or ‘Saving’ mode (two values for the desired DHW temperature).Typical A266.1 application:Theshowndiagramisafundamentalandsimplifiedexampleanddoesnot contain all components that are necessary in a system.All named components are connected to the ECL Comfort controller.List of components:ECL210/310 ElectroniccontrollerECLComfort210or310S1 Outdoor temperature sensorS2 (Optional)RoomtemperaturesensorS3 Flowtemperaturesensor, circuit1S4 DHWflowtemperaturesensor,circuit2S5 (Optional)Returntemperaturesensor,circuit1S6 (Optional)DHWreturntemperaturesensor,circuit2S7 (Optional)Flow/energymeter(pulsesignal)P1 Circulationpump, DHW,circuit2P2 Circulationpump,heating,circuit1M1 Motorizedcontrolvalve(3-pointcontrolled),circuit2Alternative: Thermoactuator(DanfosstypeABV)M2 Motorizedcontrolvalve(3-pointcontrolled),circuit1Alternative: Thermoactuator(DanfosstypeABV)A1 Alarm6 DEN-SMT/DK VI.KT.X3.02 Danfoss District Energy