ECL Comfort 210/310, A275/A375 Installation Guide - Danfoss ...

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Installation Guide ECL Comfort 210 / 310, application A275 / A375 Stop difference 12194 Circuit Setting range Factory setting 2 –50 ... 50 K 3 K Number of degrees above or below the desired DHW temperature that will stop the DHW heating. –50 ... 50: Set the number of degrees. Example with positive ‘Stop difference’ value: Temp. ° C DHW heating Stop difference Desired DHW temp. Time Example with negative ‘Stop difference’ value: Temp. ° C DHW heating Stop difference Desired DHW temp. 126 DEN-SMT/DK VI.GU.L1.02 Danfoss District Energy Time
Installation Guide ECL Comfort 210 / 310, application A275 / A375 6.3 Room limit This section is only relevant if you have installed a room temperature sensor or a Remote Control Unit. The controller adjusts the desired flow temperature to compensate for the difference between the desired and the actual room temperature. If the room temperature is higher than the desired value, the desired flow temperature can be reduced. The 'Infl. -max.' (Influence, max. room temp.) determines how much the desired flow temperature should be reduced. Use this influence type to avoid a too high room temperature. The controller will allow for free heat gains, i.e. solar radiation or heat from a fire place etc. If the room temperature is lower than the desired value, the desired flow temperature can be increased. The 'Infl. -min.' (Influence, min. room temperature) determines how much the desired flow temperature should be increased. Use this influence type to avoid a too low room temperature. This could e.g. be caused by windy surroundings. A typical setting will be -4.0 for 'Infl. -max.' and 4.0 for 'Infl. -min.' Infl. - max. (room temp. limitation, max.) 12182 Circuit Setting range Factory setting 2 -9.9 ... 0.0 -4.0 Determines how much the desired flow temperature will be influenced (decreased) if the actual room temperature is higher than the desired room temperature (P control). -9.9: The room temperature has a big influence. 0.0: The room temperature has no influence. Influence ‘Infl. - min.’ (min. limitation) Desired room temperature Actual room temperature ‘Infl. - max.’ (max. limitation) The ‘Infl. - max.’ and 'Infl. - min.' determine how much the room temperature should influence the desired flow temperature. If the ‘Infl.’ factor is too high and / or the ‘Adapt. time’ too low, there is a risk of unstable control. Example 1: The actual room temperature is 2 degrees too high. The ‘Infl. - max.’ is set to -4.0. The ‘Infl. - min.’ is set to 0.0. The slope is 1.8 (see 'Heat curve' in 'Flow temperature'). Result: The desired flow temperature is changed by (2 x -4.0 x 1.8) –14.4 degrees. Example 2: The actual room temperature is 3 degrees too low. The ‘Infl. - max.’ is set to -4.0. The ‘Infl. - min.’ is set to 2.0. The slope is 1.8 (see 'Heat curve' in 'Flow temperature'). Result: The desired flow temperature is changed by (3 x 2.0 x 1.8) 10.8 degrees. Danfoss District Energy VI.GU.L1.02 DEN-SMT/DK 127
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ECL Comfort 210/310, A275/A375 Installation Guide - Danfoss ...

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