BWT Infinity A User manual

BWT Infinity®A
Automatic Backwash Filter
DN 25 and DN 50
90 micron sediment filter
Complete with dual check valve,
backflow prevention and timer control
1-510317 / 11712 / 2016-09 / © reece / Printed in Germany
Changes reserved!
Installation and operating manual AUS
Suitability:
Suitable for domestic and commercial
installations to remove sediment and
improve the service life of plumbing
fixtures and fittings Product Approval:
The product is certified to
ATS 5200.103

Thank you very much for the
confidence that you have
shown in us by purchasing a
BWT appliance.
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Table of Contents
1 About This Documentation 4
1.1 Validity of this documentation 4
1.2 Symbols used 4
2 Safety Instructions 4
2.1 General safety instructions 4
2.2 Product-specific safety instructions 5
2.3 Personnel qualifications 5
3 Transport, Installation 5
4 Performance description 5
4.1 Intended use 5
4.2 Foreseeable misuse 5
4.3 Disclaimer 5
4.4 Other applicable documentation 5
5 Scope of supply 6
5.1 Intended Use 6
5.2 Suitable Applications 6
6 Function 7
7 Installation conditions 7
8 Installing the Filter 8
8.1 Connecting to the Connection
Module 8
8.2 Wastewater Connection 8
9 Commissioning the Filter 9
9.1 Setting the timer 9
9.2 For parallel operation only 10
10 Operation 10
10.1 Setting the backwash interval 10
10.2 Manual backwashing 10
10.3 Display 10
10.4 Cleaning 10
11 Maintenance 11
11.1 Troubleshooting 11
12 Technical data 12
12.1 Pressure Drop/Flow Rate 13
12.2 Type label 14
13 Warranty 15
14 Decommissioning and
disposal 15
14.1 Decommissioning 15
14.2 Disposal 15

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1 About This Documentation
1.1 Validity of this documentation
This documentation is valid for the following
product:
Infinity A backwash filter
This documentation is intended for operators,
end users, installation technicians not trained by
BWT, installation technicians trained by BWT (e.g.
“Trinkwasserprofi” or drinking water specialists) and
BWT service technicians.
This documentation contains important information
about how to safely and properly install the pro-
duct, how to start up, operate, use, maintain and
dismantle the product as well as how to remedy
simple faults on your own.
Please read this documentation in its entirety before
working with the product, especially section 2,
Safety Instructions, on page 4.
1.2 Symbols used
This symbol indicates that the
product can be recycled after it is
decommissioned.
2 Safety Instructions
The product was manufactured according to all
recognised regulations and technical standards and
was in compliance with the relevant legal require-
ments when it was put into circulation. Neverthel-
ess, it can pose a risk of personal injury or property
damage if you do not observe this chapter and the
safety instructions throughout this documentation.
●Carry out only those activities that are descri-
bed in this operating manual, unless you have
been trained by BWT.
●Carry out all activities in accordance with all
applicable standards and requirements.
●Instruct the operator of the product on the
product’s function and how to use it.
●Inform the operator of the product about how
to maintain the product.
●Inform the operator of the product about the
possible hazards that may arise when opera-
ting the product.
2.1 General safety instructions
●Read this documentation carefully and in its
entirety before working with the product.
●Store this documentation so that it is acces-
sible to all users at all times.
●Include the complete documentation if you
transfer the product to a third party.
●Follow all instructions regarding proper use of
the product.
●If you notice damage to the product or the
mains supply line, cease operation immedia-
tely and inform the service personnel.
●Use only accessories, spare parts and consu-
mables that have been approved by BWT.
●Adhere to the environmental and operating
conditions specified in the “Technical Data”
section.
●Wear personal protective equipment. This
equipment is for your own safety and will
protect you from injury.

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2.2 Product-specific safety instructions
In the following sections, you will find product-
specific safety instructions whenever you must per-
form certain safety-relevant actions on the device.
2.3 Personnel qualifications
The installation activities described in this manual
require basic knowledge of mechanics, hydraulics
and electrical systems as well as knowledge of the
technical terminology associated with those fields.
To ensure safe installation, these activities may only
be carried out by a specialist or by a trained person
who is under the direction of a specialist.
A specialist is defined as someone who has the
technical training, knowledge and experience as
well as the knowledge of applicable regulations
required to properly assess the work assigned to
him/her, identify possible hazards and take approp-
riate safety measures. Specialists must comply with
applicable, industry-specific regulations.
3 Transport, Installation
Transport the system as a complete unit, if possible.
If you must dismantle the system before transport,
check that all individual parts are present.
If there is a risk of frost, drain all components that
convey water.
Lift or transport the system or system components
only from the intended suspension eyes or attach-
ment points.
The system must be placed on a horizontal surface
or mounted to a vertical surface that is sufficiently
flat and has a sufficient load-bearing capacity. It
must be secured so that it does not fall or tip over.
4 Performance description
4.1 Intended use
The Inifnity backwash filters are used for filtration
of drinking and industrial water to protect the wa-
ter mains and the connected fittings, equipment,
machinery, tanks, boilers and production facilities
from malfunction and corrosion damage caused
by foreign particles.
The filters can also be used for filtration of well,
process, boiler feed, cooling and air conditioning
water. In these cases, advice must be obtained
from a specialist.
The filters are unsuitable for oils, greases, solvents,
soaps and other lubricating media. Water-soluble
substances also cannot be separated off.
4.2 Foreseeable misuse
Operating the system with parameters other than
those specified in this documentation and in sec-
tion 4.1.
Not adhering to the prescribed maintenance and
service intervals.
Using spare parts and consumables not approved
by BWT.
4.3 Disclaimer
The manufacturer is released from any liability if the
customer intentionally or forcibly removes guards
or safety devices, if the customer wilfully modifies
or circumvents the same, or if the customer does
not follow the instructions in this operating manual
or on the system.
4.4 Other applicable documentation
Observe all documents from suppliers that were
included with delivery. These are considered part
of this documentation and must not be changed
or removed.

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5 Scope of supply
BWT Infinity A consisting of:
1 Outer casing with DR brass body
2 Electronic programmable controller
3Power supply unit (240 V AC / 24 V DC -
IP40) and connection cable
4 Transparent bowl with filter element
5 Vent tube
6 Wastewater connections
7Connection module complete with dual
check valve and seals.
ADN 25 push and turn connection
B DN 50, 4 bolt flanged connection
5.1 Intended Use
The filters are primarily intended for filtering sedi-
ment from water.
They protect plumbing fixtures and fittings from
malfunctioning, and against damage caused by
foreign particles such as rust, swarf and sand.
The filters are not intended for use with chemically
treated circulating water.
The filters are not suitable for oil, fat, solvents, soap,
and other lubricating media, nor for separating
water-soluble substances.
5.2 Suitable Applications
●Domestic water supply
●Commercial use and high rise buildings
●Industrial
●Food preparation areas and beverage equip-
ment as a pre-filter
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A
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7 Installation conditions
1. The unit must be installed by a licenced trades-
person to AS/NZS 3500.
2. A connection must be available for draining the
flushing water.
3. There must be a 240 V / 50 Hz mains power
point installed above the filter within 1.2 m to
provide the unit with electrical power.
4. The power supply unit and filter are only suita-
ble for dry location installation.
5. The filter installation must be proteced against
freezing conditions, solvent vapours, fuel oil,
chemicals of all kinds, UV radiation, and heat
sources above 40 °C. A cover is recommended
where the filter is exposed to direct sun-light.
6. If the unit has been dropped or damaged,
plastic parts must be replaced, even if there is
no visible damage.
6 Function
Untreated water flows through the filter where
impurities > 90 µm are trapped by the filter screen
and removed. The filter screen can be cleaned by
backwashing as required.
The backwash filter has patented suction-ring
backwashing system that removes debris from
the filter screen.
The unit timer is set by the installer and is used to
set the interval between the backwashing cycle,
of between one hour to 56 days, depending on
incoming water quality.
The backwashing process does not interrupt the
supply of water to plumbing fixtures.

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8 Installing the Filter
Install the filter in the cold water pipes upstream of
the plumbing fixtures to be protected.
Install isolating valves when required. Install the
connection module in correct flow direction as
indicated by the arrow on the connection module.
Install support bracketing as required. To reduce
plumbing noise, rubber lined, insulated clips are
recommended.
8.1 Connecting to the Connection
Module
DN 25:
1. Turn the black retaining ring to the left limit stop
2. Press the prongs of the device into the spaces
provided
3. Rotate the device clockwise 45° to the limit and
stop
4. Pull the black retaining ring with both hands
towards the device until it clicks into place. The
device cannot be rotated unintentionally.
To release the filter, press the retaining ring towards
the connection module.
DN 50:
1. Lubricate gasket and fit to filter body. Align
locating lugs and press gasket into groove.
2. Screw the filter onto the connector using four
screws and washers provided.
3. Tighten the screws evenly and crosswise.
8.2 Wastewater Connection
Run hose connection to drain using flexible hose
(not supplied).
For unplumbed test, provide a collection basin of
approximately 15 litres capacity.
Please note:
The flushing water hose must be installed at a
minimum distance of 40 mm above the highest
possible waste water level (free discharge).
4.
2.1.
3.
DN 25
DN 50
Filter body showing gasket seal location
Align locating lugs and press gasket into groove
> 40 mm

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9 Commissioning the Filter
Slowly open the isolating valve(s) and de-aerate
the pipework. Check the seals of the installation
and filter for leaks.
Before connecting to power, check the filter di-
scharge is connected to the drain.
Insert the cable plug connector of the power supply
unit into the socket marked 24 V DC. Plug in power
supply unit with plug (3) to mains power point.
As soon as the power is connected, the first back-
washing cycle is performed automatically.
The illuminated display is activated during back-
washing.
The default factory setting (7 days) will
appear first. The filter is capable of backwashing
hourly, daily or weekly up to 56 days.
It is recommended to program the filter so that the
device is backwashed at least once a month to
avoid the build-up of foreign particles on the filter
screen, or more frequently if required.
In case of power loss the filter will backwash au-
tomatically once the power supply is reconnected.
Minimum operating pressure is 350 kPa.
9.1 Setting the timer
1. Press SET for 5 seconds.
2. Display dots (3) appear: device is in program-
ming mode.
3. Press and hold the SET key to step up the
number of hours (h) or days (d).
4. The hours (h) run from 1 - 24, followed by days
(d) from 2 - 56, followed by the hours again.
5. Hold the SET key until the desired setting has
been reached, then let go.
6. The setting is saved 10 seconds after the last
input.
7. The display dots disappear: the unit backwa-
shes automatically (display of 3 bars rotate
around the screen).
8. The display returns to programmed settings
when backwash has completed.
9. The timer is now programmed.
10. The unit will display and countdown the time
until the next backwash.
24 V
3
CIC24 VSignal IN Signal OUT
Set

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9.2 For parallel operation only
When 2, 3 or a maximum of 4 filters are operated
in parallel, they must be electrically interlocked to
prevent simultaneous backwashing.
Insert an interlocking cable into the output of any
one filter, representing filter 1, and run the cable to
the input of filter 2. Insert the next interlocking cable
into the output of filter 2, and run it to the input of
filter 3. The output of the last filter is returned to
the input of filter 1.
The required backwash interval must be set at the
filter to be backwashed first (master) (see above).
The second filter (slave) must be set as follows:
Key Display
Press Set for 5 seconds SL 0
Display dots flash - device is in programming
mode
Press Set SL 1
Wait 10 seconds, dots stop flashing.
The pressure appears in the display (0.0 P, when
no water is used).
A third filter must be set to SL 2 and a fourth to SL 3.
Disconnect and reconnect all filters to the mains
power supply. The filters will be backwashed in
sequence: Master, SL 1, SL 2 and SL 3.
The time until the next backwashing and the pres-
sure difference appear alternately in the master filter
display. The pressure difference is only displayed
for large volumes of water.
Only the pressure difference appears in the slave
filter display.
The filters are ready for use.
10 Operation
We recommend programming the filter so that the
device is backwashed at least once a month to
prevent foreign particles from adhering to the filter
element (more frequently for higher levels of soiling;
factory setting every 7 days).
10.1 Setting the backwash interval
Should the local water quality (degree of contami-
nation) change, the backwashing interval must be
corrected; see commissioning.
10.2 Manual backwashing
Unplugging and plugging in the device can back-
wash it at any time.
10.3 Display
The time until the next backwashing and the pres-
sure difference appear alternately in the display.
The pressure difference is only displayed for large
volumes of water.
10.4 Cleaning
Clean plastic parts with a soft, damp cloth only;
do not use solvents, detergents, or acidic cleaning
agents.