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ECOA903 Snow and Ice Sensor for Gutters
ENG
Installation instructions
1. Introduction
The ECOA903 is a snow and ice sensor for frost protection of rainwater systems and can be con-
nected to the ECO900 frost protection control unit. The sensor is equipped with a heating element
that keeps the surface of the sensor at the constant temperature of approximately +4°C. It will melt
the snow and ice which are detected as moisture.
The ECO900 frost protection control unit is available as versions 1 and 2.
VERSION 1
2. Install the sensor
•
Install the snow and ice sensor ECOA903 between the heating cables in rainwater gutters.
•
Attach the sensor by a cable clamp or adhesive (not included).
•
Make sure that the sensor is not in contact with the heating cables.
•
Install the sensor in the same direction as the water flow in the gutter with the two metal pipes
upwards (figure 2).
•
Install the sensor at the lowest point of the gutter near the drainpipe. The water running off is
led to the sensor surface by extruded strips. You can cut the strips to fit the existing conditions
of the gutter.
•
You can extend the connection cable to 50 meters by using a 1,5 mm² cable. Please use a cable
with numbered leads for the extension as it is very helpful for example when trying to locate
faults during a malfunction.
•
The sensors work with low voltage. Please install their leads at a sufficiently long distance from
the heating circuit supply cables.
Figure 2 shows the installation of the snow and ice sensor ECO903 and the air temperature sensor
ECOA904:
1.
Air temperature sensor ECOA904
2.
Sensor ECOA904 clamp
3.
Rainwater gutter
4.
Sensor ECOA903 clamp
5.
Snow and ice sensor ECOA903
6.
Heating cables
7.
Direction of water flow
3. Connect the sensors to the frost protection control unit
Components for frost protection of rainwater systems:
•
ECO900 frost protection control unit
•
ECOA903 snow and ice sensor with a heating resistor (5 leads)
•
ECOA904 temperature sensor for air temperature measurement (2 leads)
Lead colors in connection diagrams
Version 1 (figure 3): WH / va = white, GY / ha = grey, GN / vi = green, YE / ke = yellow,
BN / ru = brown, BU / si = blue
Version 2 (figure 4): white, grey, green, yellow, brown, blue
ECO900
Frost Protection Control
Sulanapitosäädin
MENU
VALUE ENTER
VALIKKO ARVO
VALITSE
RAK43 / 8.6.2021
VERSION 2
ECO900
Frost Protection Control
MENU
VALUE
ENTER
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