Danfoss EDA-24, EDA-230 Data sheet

Data Sheet

Dew-Point Alarm Types EDA-24 and EDA-230

Application

EDA Dew-point Alarm

EDA is an electronic dew-point alarm for
monitoring chilled panels or chilled beams.

EDA can be used in connection with Danfoss self­actuating climatic regulator FED/FEK.

Via sensor type EDA-S, the electronic dew-point
alarm EDA registers whether condensate is
appearing on the flow pipe to the chilled panel/
chilled beam.

When condensate is registered on the flow pipe
to the chilled panel/chilled beam, the electronic
dew-point alarm EDA is activated. In the alarm

mode, the two potential-free relay outputs are
activated. The relay outputs can be used to shut
off the chilling valve for the chilled panel/chilled
beam and to give a signal to a alarm system or
BMS system that condensate has generated in
this regulation zone. The relay outputs are in the
alarm mode in the case of condensate, short­circuited sensor circuit or disconnected sensor
circuit.

EDA has a potentiometer for setting the
sensitivity of the EDA-S sensor.
The EDA-S sensor is placed on the flow pipe for
the chilled panel/beam, following which
condensate on the EDA-S sensor will trigger an
alarm.
The sensor is attached by means of plastic strips
supplied with the EDA-S sensor.

LED indication:

On the front of the electronic dew-point alarm,
EDA, there are two LEDs:

Green LED to show whether a supply

▪

voltage has been connected to the product.
Red LED to show whether there is a dew-

▪

point or sensor alarm.

Ordering and Specifications

Danfoss Heating Solutions VD36A302 © Danfoss 02/2011 1

Electronic dew-point alarm

Type Description Code no.
EDA-24 Electronic dew-point alarm, 24 V power supply 088H3001
EDA-230 Electronic dew-point alarm, 230 V power supply 088H3002
EDA-S Sensor for electronic dew-point alarm 088H3011

Accessories

Description Code no.
Plastic box for EDA, enclosure IP54, dimensions, mm: H = 130, D = 94, W = 94 088H3010

Valve

Type Description Code no.
RA-C 15 For chilling and heating circuits 013G3094
RA-C 20 For chilling and heating circuits 013G3096

Thermal actuator

All Danfoss thermal actuators, type TWA, can be used with the EDA dew-point alarm.
Further information is available from the TWA data sheets.

Data Sheet Dew-Point Alarm Types EDA-24 and EDA-230

Wiring Diagram

Data

To sensor

Power supply

Type EDA-24 EDA-230
Supply voltage 24 VAC± 10%, 50-60 Hz 230 VAC ± 10%, 50-60 Hz
Power consumption 3 VA 3 VA
Relay output 1* (7-5 / 7-6) 230 VAC, 10 A, NO/NC 230 VAC, 10 A, NO/NC
Relay output 2* (13-14) 24 VAC, 2 A, NC 24 VAC, 2 A, NC
Ambient temperature -20 /+50 °C -20 /+50 °C

Dimensions

*Stated with connected supply voltage, but condensate alarm not in alarm mode.

2 VD36A302 © Danfoss 02/2011 Danfoss Heating Solutions