Connecting to the water pipe (Fig. 4):
• The hoses of the device are to be connected
free of tension.
• Verify that the water connections are water-
tight.
• The concentrate line is to be led to the
on-site wastewater connection with an air
gap and then connected there. The flexible
hoses may not exhibit any constriction in
cross section. During installation, ensure
that the concentrate and permeate lines are
correctly connected.
Installation suggestion:
1 BWT THERO 90PRO reverse osmosis
2 Particle pre-filter (not included in delivery
but recommended to protect the RO dia-
phragm)
3 Permeate outfeed 1/4" for connection to
water tap
4 Concentrate outfeed 1/4" (for connection to
the drain)
5 Feedwater inlet 3/4"
6 Alternative position for the drain connection
7 Water tap
8 Observe: 7" installation height
9 PE mains plug type IEC 320
10 Hot feed water
11 Cold feed water
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8
9
4
1
3
Fig. 4: Installation diagram / example
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11
6
2
Notes on start-up:
• Connect the mains plug of the RO device to a
grounded mains socket (100-230 V, 50 Hz).
• Please also observe the provisions in the op-
erating manual of the external pre-filter used.
• The water hardness may vary in different
places.
Note: Before using the RO unit, we
recommend checking the water pre-
treatment (e.g. in-house water
softening system, central water pro-
cessing of waterworks). This measure
is necessary to improve the efficiency
and service life of your RO diaphragm.
• Connect all hoses and check for water-tight-
ness.
• Open the cock for the feedwater supply.
• Insert the mains plug (230 V / 50 Hz).
• Note: Please discard the permeate produced
during the first ten minutes after each new
installation, initial start-up, or diaphragm
change.
Note: Reduction of the temperature by
1 °C results in a reduction of the per-
meate output of the membranes of
approximately 3 percent.
3 Operating the reverse osmosis
unit
3.1 Switching on the RO device
• The RO device must be connected to the
hoses (see the installation diagram Fig. 4) and
the electrical socket.
• Use the device switch (situated on the rear
of the device) to switch on the device BWT
THERO 90PRO. A green LED (Fig. 5) indicates
that the RO unit is switched on (POWER ON).
5
EN
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