Xylem Aquontroller - Manual (Page 32)

en en en en
32
2.1 Product description 2.1 Product description 2.1 Product description 2.1 Product description
AQUONTROLLER is a variable frequency speed adjuster (inverter) for constant pressure systems.
In a plumbing system, the demand for maximum flow is sporadic as water is generally used at irregular
intervals and variable flow demands are therefore the norm.
For these reasons, AQUONTROLLER automatically regulates the speed of the electric pump in order to
maintain the water pressure in the system constant.
AQUONTROLLER is available in the following versions:
•
MMW: inverter connected to the water supply line with a single-phase power supply for a
single-phase pump. It can be installed in any position, although it should be installed
vertically.
•
MMA: air-cooled inverter, wall mounted vertical position, with a single-phase power supply
for a single-phase pump.
2.2 Advantages and benefits
2.2 Advantages and benefits 2.2 Advantages and benefits 2.2 Advantages and benefits
The main purpose of the appliance is to maintain the pressure in a plumbing system constant as this
provides the following advantages and benefits:
energy saving.
constant pressure at variable flow rates.
increased pump lifetime.
automatic reset for various faults, ensuring continuity of supply.
It also simplifies the design and installation of the system via:
quick and easy hydraulic and electrical installation.
built-in check valve.
avoids having to use: pressure switch, large expansion chamber.
2.3
2.3 2.3 2.3 Operati Operati Operati Operating conditions ng conditions ng conditions ng conditions
Environment MMW
MMA Temperature: 0..+40°C.
Max. relative humidity: 50% a +40°C (without condensation).
MMW Temperature: +1..+40°C.
Water with no chemically aggressive substances (ph 5÷9) or suspended
solids.
Hardness: max 54 ° f. Harder waters can cause severe damage to the
non-return valve integrated.
NOT capable of running on most water glycol. Liquid
MMA Temperature:
0..+50°C, max error reading of sensor ±1.0%FS.
-10..+80°C, max error reading of sensor ±1.5%FS.
2.3.1
2.3.1 2.3.1 2.3.1 Materials in con Materials in con Materials in con Materials in contact with the liquid tact with the liquid tact with the liquid tact with the liquid
MMW
Inverter:
- body: PP 40% ca;
- non returne valve: POM;
- flow sensor: ferrite;
- o-ring sealing: NBR;
- heatsink: brass.
MMA Sensore di pressione:
Acciaio inossidabile AISI 316 L