Danfoss ECL Comfort 210 Installation Manual

Also see for ECL Comfort 210: Installation guide User guide Installation guide Installation guide Operating guide

Danfoss ECL Comfort 210 Installation Manual Manual pdf 123 page image

Installation Guide ECL Comfort 210 / 310, application A275 / A3756.0 Settings, circuit 26.1 Flow temperatureThe ECL Comfort controller determines and controls the flowtemperature related to the outdoor temperature. This relationshipis called the heat curve.The heat curve is set by means of 6 coordinate points. The desiredflow temperature is set at 6 pre-defined outdoor temperaturevalues.The shown value for the heat curve is an average value (slope),based on the actual settings.Outdoortemp. Desired flow temp. YoursettingsA B C-30 °C 45 °C 75 °C 95 °C-15 °C 40 °C 60 °C 90 °C-5 °C 35 °C 50 °C 80 °C0 °C 32 °C 45 °C 70 °C5 °C 30 °C 40 °C 60 °C15 °C 25 °C 28 °C 35 °CAdjust the desired flow temperature at -30, -15, -5, 0, 5, and 15 °C,if required.A: Example for floor heatingB: Factory settingsC: Example for radiator heating (high demand)Heat curveCircuit Setting range Factory setting2 0.1 ... 4.0 1.0The heat curve can be changed in two ways:1. The value of the slope is changed (see heat curve exampleson next page)2. The coordinates of the heat curve are changedChange the value of the slope:Push the dial to enter / change the slope value of the heat curve(example: 1.0).When the slope of the heat curve is changed by means of the slopevalue, the common point for all heat curves will be a desired flowtemperature = 24.6 °C at an outdoor temperature = 20 °CChange the coordinates:Push the dial to enter / change the coordinates of the heat curve(example: -30,75).The heat curve represents the desired flow temperatures atdifferent outdoor temperatures and at a desired room temperatureof 20 °C.If the desired room temperature is changed, the desired flowtemperature also changes:(Desired room T - 20) × HC × 2.5where "HC" is the Heat Curve slope and "2.5" is a constant.Desired flow temperature° C-50 -40 -30 -20 -10 0 10 2011010080604020CBASlope changesCoordinate changesThe calculated flow temperature can be influenced by the ‘Boost’ and‘Ramp’ functions etc.Example:Heat curve: 1.0Desired flow temp.: 50 °CDesired room temp.: 22 °CCalculation (22–20) × 1.0 × 2.5 = 5Result:The desired flow temperature will be corrected from 50 °C to 55 °C.Danfoss District Energy VI.GU.L1.02 DEN-SMT/DK 123