2.3
Drinking water system
• Drinking water systems must meet the national regulations, and installations may only be carried
out by a trained plumber.
• Trained plumbers are persons who, on the basis of their vocational education, training, knowledge
and experience, are capable of and authorised to judge and carry out the work with which they have
been commissioned. This also includes the recognition of possible hazards and the adherence to
the pertinent regional and national standards, rules and regulations.
• If you have any questions or problems, please consult a qualified plumber.
• The unit may only be connected if all prescribed measures for protecting the drinking water are
adhered to.
• Drinking water may only be discharged into a non-drinking water system via a free flowing outlet
(with air gap separation).
3
Product Description
3.1
Scope of delivery
A
Description
1
Level control unit
2
Protection cap
3
Solenoid valve
4
Strainer
5
Seal for solenoid valve socket/solenoid valve plug
6
Bag containing fastening material
7
Level sensor
8
Solenoid valve socket
3.2
Unit overview
B
Description
1
Level control unit for processing the measured values from the level sensor and controlling the solenoid valve
3
Solenoid valve for topping up the pond with drinking water
7
Level sensor for detecting the water level in the pond
Not included in the delivery scope but indispensable for the intended use:
B, C
Description
9
Free flowing outlet (air gap separation) of the drinking water in a supply pipe to the pond
10
Supply pipe to the pond (e. g. DN 50)
11
Pond overflow
3.3
The level control unit in conjunction with the level sensor functions as follows
The level control unit is permanently connected to the level sensor, the electrodes of which are im-
mersed in the pond to be monitored. The level control unit is also connected to the solenoid valve.
The level control unit generates a measuring signal which is used to monitor the voltage applied
between the electrodes of the level sensor. The level control unit opens or closes the solenoid valve
depending on the measured value. A switch-on and switch-off delay in the electronics prevents wave
action from causing unnecessary switching.
The LEDs in the display of the level control unit signal the respective status of the drinking water top-
up process.
The sensitivity of the level sensor to a voltage change can be adjusted via a sensitivity regulator in the
level control unit. The sensitivity is set in the factory such that changes are not normally required.
The level sensor is operated with a safe extra-low voltage of 12 V (not dangerous to humans) and may
therefore be used in swimming or bathing ponds.
- EN -
21