Danfoss ECL Comfort 310 Installation Manual

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Danfoss ECL Comfort 310 Installation Manual Manual pdf 4 page image

Installation Guide ECL Comfort 210, application A2602.0 Installation2.1 Before you startThe application A260is very flexible. These are the basic principles:Heating (circuit 1 and circuit 2):Typically, the flow temperature is adjusted according to yourrequirements. The flow temperature sensor S3 (circuit 1) andS4 (circuit 2) are the most important sensors. The desired flowtemperatures at S3 and S4 are calculated individually in the ECLcontroller, based on the outdoor temperature (S1). The lower theoutdoor temperature, the higher the desired flow temperature.By means of two week schedules, the heating circuits canindividually be in ‘Comfort’ or ‘Saving’ mode (two temperaturelevels).The motorized control valves M1 (circuit 1) and M2 (circuit 2) areopened gradually when the flow temperature is lower than thedesired flow temperature and vice versa.The return temperatures S5 (circuit 1) and S6 (circuit 2) to thedistrict heating supply should not be too high. If so, the desiredflow temperature can be adjusted (typically to a lower value), thusresulting in a gradual closing of the motorized control valves.In boiler-based heating supply the return temperature should notbe too low (same adjustment procedure as above).Furthermore, the return temperature limitation can be dependentof the outdoor temperature. Typically, the lower the outdoortemperature, the higher the accepted return temperature.If the measured room temperatures do not equal the desired roomtemperatures, the desired flow temperatures can be adjusted.The circulation pumps, P1 (circuit 1) and P2 (circuit 2), are ON atheat demand or at frost protection.The heating for the two circuits can be switched OFF individuallywhen the outdoor temperature is higher than a selectable value.When circuit 2 is a sub-circuit to circuit 1: The desired flowtemperature in circuit 2 can be forwarded to circuit 1. The flowtemperature in circuit 1 will in this way fulfil the demand fromcircuit 2.Typical A260 application:Theshowndiagramisafundamentalandsimplifiedexampleanddoesnot contain all components that are necessary in a system.All named components are connected to the ECL Comfort controller.List of components:S1 Outdoor temperature sensorS2 Roomtemperaturesensor/ECA30,circuit1S3 Flow temperature sensor, circuit 1S4 Flow temperature sensor, circuit 2S5 Returntemperaturesensor, circuit1S6 Returntemperaturesensor, circuit2S8 Roomtemperaturesensor/ECA30,circuit2P1 Circulation pump, circuit 1P2 Circulation pump, circuit 2M1 Motorized control valve, circuit 1M2 Motorized control valve, circuit 2R4 Relay output, alarmThe A260 application can utilize a connected flow / heat meter to limitthe flow / power.The controller is pre-programmed with factory settings that are shownin the relevant chapters of this guide.4 DEN-SMT/DK VI.LG.F1.02 Danfoss District Energy