BWT Bewamat

Intelligent quantity-dependent regeneration

The simplex water softeners Bewamat 75A / 25A are equipped with a device that disinfects the ion exchange resin during the regeneration. Spring-loaded non-return valves protect all water connections on the inlet side of the unit.

The systems comply with all relevant national and international standards.

HOW TO CALCULATE THE PEARL WATER CAPACITY?

Example Bewamat

Bewamat 25A:

25.000* / 15 = 1.666 litre

Bewamat 75A:

75.000* / 15 = 5.000 litre

Example BWT Perla silk / Aquadial bio

BWT Perla Silk S / Aquadial 10 Bio:

26.000* / 20 = 1.300 litre

BWT Perla Silk XL / Aquadial 25 Bio:

75.000* / 20 = 3.750 litre

* Nominal capacity according to EN 14743

Technical Specifications

Bewamat	Type	25 A	75 A
Product no.		11324	11325
Nominal connection width	DN	32 (G 1 1/4“ AG)	32 (G 1 1/4“ AG)
Nominal pressure (PN)	bar	10	10
Operating pressure	bar	2.5-8.0	2.5-8.0
Nominal flow according to EN 14743	m3/h	1.4	1.8
Pressure loss at nominal flow rate	bar	1.0
Max. flowrate	m3/h	1.4	2.5
Nominal capacity according to EN 14743	m3 x °d (mol)	25 (4,5)	75 (13,4)
Regenerative consumption per regeneration, ca.	kg	1.2	3.5
Regenerative water requirement, ca.	Liter	55	128
Quantity of resin	Liter	8	21
Quantity of regenerative, max	kg	15	50
Power supply	V/Hz	230/50	230/50
Power in watts	Watt	20	20
Unit voltage	V/AC	18 ~	18 ~
Permissible voltage peaks, max.	KV	1	1
Protection class		IP53	IP53
Water/ambient temperature	°C	5 - 30 / 5 - 40	5 - 30 / 5 - 40
Humidity		non condensating	non condensating
Height H x Width W, ca.	mm	640 x 390	1090 x 390
Depth D1 / D2, ca.	mm	460 / 560	460 / 560
Connection height	mm	500	960
Height of overflow	mm	280	650
Connection width	mm	60	60
Min. sewage system connection	DN	50	50
Approx. operating weight	kg	40	100

Scope of Delivery

Bewamat A water-softening unit, with:

• Manifold control valve with microprocessor controller
• Brine valve
• Softening column with ion exchanger
• Cover
• Storage area for regenerative
• Brine cavity
• Softened water output
• Hard water inlet
• Flushing water connection
• Overflow
• Power supply unit with cable and mains plug
• 2 m flushing water hose
• 2 m overflow hose 18 x 24
• Fixing material

Use

Intended Use

Bewamat A is suitable for partial softening of drinking and service water, to protect the water pipes and the connected fittings, appliances, boilers etc. from malfunctions and damage caused by lime incrustation.

The product size must correspond to the expected conditions of use. Information on this can be found in DIN 1988-200 and in the technical data in Chapter 12 of these Installation and Operating Instructions.

If the product is intended for commercial use, it must be checked / approved by a BWT consultant.

Operation of the product with regular functional checks as well as the execution of the necessary maintenance measures for the safe operating condition in compliance with the operating conditions on which the planning and installation are based.

Function

The unit operates according to the principle of intelligent regeneration.

Intelligent quantity-dependent regeneration: When the unit is started, the available supply of softened water is programmed (depending on the hardness of the drinking water).

At a user-defined time (e.g. at night), the unit checks whether the remaining supply of softened water is sufficient for the following day.

If not, the softening column is regenerated in order to refill the supply of softened water up to 100%.

In the event of a power failure, the data and the time are kept (about 1 year).

The unit is equipped with a device that disinfects the ion exchange resin during the regeneration. Spring-loaded non-return valves protect all water connections on the inlet side of the unit.

Automatic activation of regeneration: If the capacity is not used up within four days, the electronic system triggers a regeneration.

The system complies with all relevant national and international standards.

Bewamat 75 A only: Two capacity levels can be set on the controller, making the unit suitable for larger applications.

The unit is preset. In case less performance is necessary, this can be set by after-sales service.

Feed water

The hard water to be fed into the unit must always meet the specifications of the Trinkwasserverordnung (German drinking water ordinance) or EU Directive 98/83/EC. The total dissolved iron and manganese may not exceed 0.1 mg/l.

The hard water to be fed into the unit must always be free of air bubbles. Install a bleed device if necessary.

If the treated water is intended for human consumption as defined in the Trinkwasser-verordnung (German drinking water ordinance), the ambient temperature must not exceed 25 °C. If the treated water is intended for industrial purposes only, the ambient temperature must not exceed 40 °C.

The unit’s maximum operating pressure must never be exceeded (see technical specifications). If the network pressure is higher, a pressure reducer must be installed upstream of the unit.

The unit requires a minimum operating pressure to function (see chapter 12, Technical specifications).

During pressure fluctuations and surges, the sum of the pressure surge and the standing pressure must not exceed the nominal pressure. The positive pressure surge must not exceed 2 bar and the negative pressure surge must not be less than 50 % of the self-adjusting flow pressure (see DIN 1988- 200/3.4.3).

Continuous operation of the water softener with water containing chlorine or chlorine dioxide is possible if the concentration of free chlorine/chlorine dioxide does not exceed 0.5 mg/l.

Continuous operation with water containing chlorine/chlorine dioxide will cause premature ageing of the ion exchange material. A water softener reduces the concentration of free chlorine and chlorine dioxide. In other words, the concentration in the outflow of a water softener is generally considerably lower than in the inflow.

Downloads

BWT Bewamat Installation and Operating Instructions