Installation Guide
ECA 30 / 31 for ECL Comfort 210 / 210B / 310 / 310B
2.2 Introduction
The Remote Control Units (RCU) ECA 30 and ECA 31 are used for
room temperature control and override of the ECL Comfort 210 /
210B and ECL Comfort 310 / 310B controllers.
Up to two remote control units can be connected to one ECL
controller in order to control the ECL controller remotely.
The display has backlight.
The RCUs are connected to the ECL Comfort controllers by means
of 2 × twisted pair cables for communication and power supply
(ECL 485 communication bus).
The ECA 30 / 31 has a built-in room temperature sensor. An
external room temperature sensor can be connected substituting
the built-in temperature sensor.
Furthermore, the ECA 31 has a built-in relative humidity sensor and
the signal is used in relevant applications.
It is possible to connect up to 2 RCUs on the ECL 485
communication bus.
One RCU can monitor max. 10 ECL Comfort controllers (master/
slave system).
Please consult the user guide that is enclosed with your product for
more information on the ECL Comfort controller.
ECA 30
(code no. 087H3200)
Remote control unit with room
temperature sensor
ECA 31
(code no. 087H3201)
Remote control unit with room
temperature sensor and relative
humidity sensor
Safety Note
To avoid injury of persons and damages to the device, it is absolutely
necessary to read and observe these instructions carefully.
Necessary assembly, start-up, and maintenance work must be
performed by qualified and authorized personnel only.
The warning sign is used to emphasize special conditions that should
be taken into consideration.
This symbol indicates that this particular piece of information should
be read with special attention.
Danfoss District Energy
VI.GU.V1.02
DEN-SMT/DK
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