Intended Use - BWT Rondomat Duo-DVGW 2 Einbau- Und Bedienungsanleitung

Intended use

Intended use
Intended use Intended use Intended use
For softening or partial softening of drinking water in multi-family houses,
housing areas, hospitals, and service water, process water, boiler
GB GB GB
GB GB
feed water, cooling water and air conditioning water (in accordance
with the relevant DIN 1988, Part 2 and 7) and for reducing malfunc-
tions and damage due to lime in water pipes and connected water-
carrying system components.
Function Function
Function Function Function
Rondomat Duo is a duplex softening unit which functions in accordance
with the ion exchange principle. The unit is run with columns continually
changed at short intervals. This method of operating ensures that soft-
ened water is even available during a regeneration procedure, while the
frequent column change minimises stagnation times. In terms of chemi-
cal and microbiological parameters, this leads to significantly better water
quality than with conventional alternating softening units.
Regeneration is triggered volumetrically (depends on the quantity of
water).
Very brief salt dilution times and short regeneration periods are achieved
as a result of a salt hopper for storing and dissolving salt and a new
quick-filling system for the brine container (patent pending).
The hardness of local untreated water is entered into the electronic
system when the unit is started. All other unit parameters are stored in
the electronic system. All unit data is preset and unit parameters can be
queried. The remaining capacity is displayed in liters or in bar-graph
form. The flow quantity is displayed in l/h during operation.
Additionally f Additionally f Additionally f Additionally f Additionally for Duo D or Duo D or Duo D or Duo DV V V V V GW only: or Duo D GW only: GW only: The unit is equipped with a disinfection GW only: GW only:
device that disinfects the ion exchanger during the regeneration process.
Spring-loaded non-return valves protect all connections on the upstream
side of the unit (in compliance with DVGW). This eliminates the need for
a system or a pipe isolator.
Furthermore, the unit complies with DVGW regulations, as proven by
the DVGW test mark, and is very economical.
Additionally f Additionally f Additionally for Duo-I BOB only: Additionally f Additionally f or Duo-I BOB only: or Duo-I BOB only: or Duo-I BOB only: The unit is equipped with larger or two or Duo-I BOB only:
regenerative containers to extend the refill intervals.
Installation conditions Installation conditions Installation conditions
Installation conditions Installation conditions
Observe all applicable installation regulations, general guidelines, hy-
giene requirements, and technical specifications.
Softening units may not be installed in water supply systems which
provide water for fire extinguishing purposes.
The emission of interference (voltage peaks, high-frequency electro-
magnetic fields, interference voltages, voltage fluctuations...) by the
surrounding electrical systems may not exceed the maximum values
specified in EN 61000-6-4.
24 24 24 24 24
The pipe network must be flushed before the water softening unit can be
installed.
The hard water to be fed into the unit must always meet the specifica-
tions of the drinking water regulation or EU directive 98/83 EC. The total
dissolved iron and manganese may not exceed 0.1mg/l.
The hard water to be fed into the unit must always be free of air bubbles; The hard water to be fed into the unit must always be free of air bubbles; The hard water to be fed into the unit must always be free of air bubbles; The hard water to be fed into the unit must always be free of air bubbles; The hard water to be fed into the unit must always be free of air bubbles;
if necessar if necessar if necessar if necessary y y y y , a b if necessar , a b , a b , a b , a bleed de leed de leed de leed de leed device m vice m vice m vice m vice must be installed. ust be installed. ust be installed. ust be installed. ust be installed.
Only salt tablets which comply with DIN EN 973 may be used for regen-
eration.
The unit should be sized so that at least daily regeneration is necessary
based on the throughput. If water consumption is reduced, e.g. during
holidays, a shut-off device must be fully opened for at least 5 minutes
before water can be used again (DIN 1988 sections 4 and 8 and DIN
EN1717). Lines that are no longer in use must be disconnected from the
drinking water installation.
A protective filter must be installed up to 1 m
unit in the direction of flow. The filter must be functional before the water
softening unit is installed. This is the only way to ensure that dirt and
products of corrosion cannot enter the softener.
You must check whether a mineral dosing device should be installed
downstream of the unit for the purpose of preventing corrosion.
When installing the unit, select a location where the unit can easily be
connected to the water supply network. A connection to the sewage
system (at least DN 50), a floor drain and a separate mains socket
(230 V/50 Hz) must be nearby.
If no floor drain exists, a separate safety device (e.g. a hydrostop) must
be used.
The rated mains power (230 V/50 Hz) and the requisite operating pres-
sure must be present at all times. No protection against a lack of water
is provided. This must be installed on-site if required.
The installation site must be free of frost and kept free of chemicals,
paint, solvents and fumes, and the ambient temperature must not be too
high.
If the softened water is intended for human consumption as defined in
the drinking water regulation, the ambient temperature must not exceed
25°C.
If the softened w If the softened water is intended f If the softened w If the softened w If the softened w ater is intended f ater is intended f ater is intended for technical pur ater is intended f
temperature must not exceed 40°C. temperature must not exceed 40°C. temperature must not exceed 40°C. temperature must not exceed 40°C. temperature must not exceed 40°C.
The hose attached to the overflow of the brine container and the flushing
water hose must be routed at an incline to the sewage system or con-
nected to a pump.
Please note: According to DIN 1988, the flushing water hose must be Please note: Please note: Please note: Please note:
secured at a distance of at least 20 mm from the highest possible waste
water level (free discharge).
If flushing water is fed into a pump, it must be designed for a water
3
quantity of at least 2 m /h or 35 l/min.). If the pump is used for other units
simultaneously, it must be sized larger by a factor of their water output
quantities.
The pump must be salt-water resistant.
The unit' The unit' The unit' The unit's maxim The unit' s maxim s maxim s maxim s maximum oper um oper um oper um oper um operating pressure m ating pressure must ne ating pressure m ating pressure m ating pressure m
tech. specifications). . . . . If the network pressure is higher, a pressure reducer
must be installed upstream of the unit.
The unit requires a pressure of at least 1.5 bar The unit requires a pressure of at least 1.5 bar The unit requires a pressure of at least 1.5 bar The unit requires a pressure of at least 1.5 bar to function The unit requires a pressure of at least 1.5 bar
specifications). . . . .
During pressure fluctuations or surges, the sum of the pressure surge During pressure fluctuations or surges, the sum of the pressure surge During pressure fluctuations or surges, the sum of the pressure surge During pressure fluctuations or surges, the sum of the pressure surge During pressure fluctuations or surges, the sum of the pressure surge
and the standing pressure is not to e and the standing pressure is not to e and the standing pressure is not to e and the standing pressure is not to exceed the nominal pressure and the standing pressure is not to e
positive pressure surge must not be greater than 2 bar and the negative
pressure surge must not be less than 50% of the self-adjusting flow
pressure (refer to DIN 1988 Part 2.2.4).
The technical function of the unit is not guaranteed if the above condi-
tions are not complied with.
1 m 1 m in front of the water softening 1 m 1 m
or technical pur or technical pur or technical purposes only or technical pur poses only poses only poses only poses only, the ambient , the ambient , the ambient , the ambient , the ambient
ust ne ust ne ust nev v v v v er be e ust ne er be exceeded er be e er be e er be e xceeded xceeded xceeded (see xceeded
to function to function to function (see tech. to function
xceed the nominal pressure xceed the nominal pressure xceed the nominal pressure. . . . . The xceed the nominal pressure