Danfoss ECL Comfort 110 Информационный лист - Страница 4

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Danfoss ECL Comfort 110 Информационный лист
Data sheet
Basic principles
4
ECL Comfort 110
Control of district heating circuits with or
without heat exchanger and for boiler-based
heating circuits
Typically, the flow temperature is adjusted
according to the desired flow temperature.
• Adjustment of flow temperature
The desired flow temperature is calculated
in the ECL Comfort controller, based on the
outdoor temperature. The lower the outdoor
temperature, the higher the desired flow
temperature.
The motorized control valve is opened
gradually when the flow temperature is lower
than the desired flow temperature and vice
versa.
VD.KT.C3.02
© Danfoss 09/2008
• Return temperature limitation
The return temperature to the district heating
supply should not be too high. If so, the
desired flow temperature can be adjusted
(typically to a lower value) thus resulting in a
gradual closing of the motorized control valve.
In boiler-based heating supply the return
temperature should not be too low (same
adjustment procedure as above).
• Room temperature limitation
If the measured room temperature does not
equal the desired room temperature, the
desired flow temperature can be adjusted.
• Circulation pump control
The circulation pump is ON when the desired
flow temperature is higher than a user-defined
value (factory setting: 20 °C ) or the outdoor
temperature is lower than a user-defined
value (factory setting: 2 °C).
DH-SMT/DK