Installation Guide
ECL Comfort 210 / 310, application A214 / A314
0 - 10 volt controlled actuator or damper (ECL Comfort 310):
This actuator type is indicated in the application diagrams with
an "A". This electric actuator contains a reversible gear-motor. A
control voltage between 0 and 10 volt comes from the extension
module ECA 32 in order to manage the control valve. The voltage in
the ECL Comfort controller is expressed as a % value and displayed
at the valve symbol. Example: 45 % corresponds to 4.5 volt.
When the flow temperature (for example at S3) is lower than
the desired flow temperature, the control voltage is gradually
increased in order to gradually increase the flow. By this, the flow
temperature will align with the desired temperature.
The control voltage remains on a constant value as long as the flow
temperature corresponds to the desired temperature.
Oppositely, when the flow temperature is higher than the desired
flow temperature, the control voltage is gradually reduced in order
to reduce the flow. Again, the flow temperature aligns with the
desired temperature.
A314.1 and A314.2: The 0 - 10 volt output signal can be reversed.
Control of fan speed
The fans V2 and V3 can be individually speed controlled by means
of 0 - 10 volt signals. Each speed control signal comes from the
analog outputs of the ECA 32 module.
The control voltage is expressed as a % value and displayed at the
V1 and V2 symbols.
Danfoss District Energy
VI.GU.A2.02
DEN-SMT/DK
131
