Object Of The Supply; General Description Of The System - DAB AQUATWIN TOP 132 Instructions Pour L'installation Et La Maintenance

3. OBJECT OF THE SUPPLY

AQUATWIN TOP unit for managing rain water, composed of:

4. GENERAL DESCRIPTION OF THE SYSTEM

The AQUATWIN TOP unit is used for the management and distribution of rain water. The unit detects the lack of water in both rain water and
mains collection system and corrects it to guarantee that the system operates correctly (or rather, it never lets the identified users run out of water).
Notify in the event of faults and indicate the type of problem incurred. The system is generally used for supplying utilities with non-drinking water
such as washing machines, toilet discharge and floor-washing or irrigation systems.
The main aim of the AQUATWIN TOP system is to give priority to the consumption of rain water rather than mains water. When the rain water in
the collection tank is insufficient (where a single tank is used), the control unit passes to the mains water supply by means of the 150L storage
tank, thus ensuring a flow of water to the water drawing points (N.B: The water supplied by the system is not fit for drinking). The connection
between the rain water tank or tanks (the system may be connected to two independent rain water tanks) and the mains water tank built into the
system is selected by means of three-way valves installed on the pump intake. If only one of the two rain water tanks does not have sufficient
water available, the system will work in hybrid mode with mains water and rain water.
The operation of the pumps is similar to a traditional pressure-boosting station with two pumps and "start-stop" system by means of a pressure
sensor and alternation of starts at each user request. When the pressure drops by a predetermined value (set point) the pump starts; if it is not
sufficient to bring the pressure to the desired value the second pump starts. When the utilities are turned off and pressure is restored the pumps
are automatically deactivated. In the event of water lack the pumps stop and the fault is indicated on the front of the control panel; the system is
automatically reenabled when the water returns.
The water storage tank is provided with internal floats for automatically replenishing with mains water and for indicating an overflow fault in the
event of a malfunction of the solenoid valve. The fault is indicated locally by a buzzer and it is possible to fit an alarm in a manned location.
The system is equipped with:
Air-gap system to avoid contamination between the mains water and the water present in the water storage tank, which by stagnating
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could favors the proliferation of bacteria; for this purpose it is recommended the MAN function on the panel to replace the water in the
tank (the replacement is bound to the request of water from the user).
Filter placed at the entry to the water storage tank to prevent the access of solid bodies or small insects that could accelerate the
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proliferation of bacteria.
– 2" connections for eliminating excess water in the event of overflow, to be connected to a drain.
ENGLISH
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Description
Adjustable vibration dampers
Self-priming pumps
Three-way valves
Delivery interception valve
Expansion vessel 8L
Pressure sensor
Pressure control gauge
Control and protection panel
Mains water storage tank
Mains water connection valve
Expansion vessel 2L
Inspectable filter type "Y"
Tank feeding solenoid valve
Water storage tank input filter