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

Installation Guide ECL Comfort 210 / 310, application A275 / A375
External signal for desired flow temperature
A voltage (0 - 10 V) can be applied to the input terminal S10 in
order to determine the desired flow temperature.
The measured voltage on input S10 must be converted to a
temperature value by the controller. When the voltage gets higher,
the desired flow temperature increases.
The following settings set up the scaling.
Ext. desired T — (ECL Comfort 310)
Circuit Setting range Factory setting
1 Read-out only
The actual desired flow temperature is indicated by the unit °C.
Read-out:
- - : External voltage signal is not connected..
°C : External voltage signal converted to desired flow
temperature.
Push the dial to see the graph and enter the value sets for the input
voltage (1 and 10 volt) and displayed desired flow temperature.
Desired flow temperature: 10 ... 120 °C
Fixed voltage settings: 1 V and 10 V
Factory settings: (1,10) and (10,100)
This means that the ‘Desired flow temperature’ is 10 °C at 1.0 V
and 100 °C at 10 V.
Typically, the higher the voltage, the higher the displayed desired
flow temperature.
Example: Relationship between input voltage and displayed desired flow
temperature
Desired flow temp. (°C)
100. 0
10.0
1 10
This example shows that 1 volt corresponds to 10.0 °C and 10 volt
correspond to 100 °C.
Volt
The external voltage signal must be higher than 1.0 V in order to
activate the override.
Danfoss District Energy VI.GU.L1.02 DEN-SMT/DK 105