11
4. Installation and assembly
4.3 Drinking water connection
We recommend a 3/4" flexible reinforced hose for
connection to the drinking water network.An additional shut-
off valve makes all servicing work easier.
If water pressure is greater than 3.5 bar or if there are
large fluctuations in pressure, a pressure reducer must be in-
stalled in the drinking water network. An upstream water
hammer damper prevents noise in the pipeline and backflow
waves.
To be able to safely guarantee the function of the floating
switch and 3-way switch-over valve, a fine filter must be in-
stalled in the drinking water network on site.
No liability will be accepted for functional problems or da-
mage caused by a lack of fine filter.
Check the firm fit of the floating switch and the free mo-
vement of the floating arm in the basic tank. Be very careful
to make sure you do not damage the valve.
Before initial operation, the drinking water pipe feeding
the system must be flushed and cleaned.
4.4 Connecting the pump
Connect the pump to the service water network. The user
can choose how the pipes are to be connected.
Caution! According to DIN 1988 Part 2, there must be a
distinct difference between the pipes belonging to the servi-
ce water network and those belonging to the drinking water
network
We recommend the use of a 1" flexible reinforced hose
for connection to the service water network. In addition, the
pressure connection should be fitted with a shut-off valve
with low flow resistance. This makes later servicing work
much easier.Asurge tank of a sufficient size mounted on site
protects the system from impermissible pressure surges, ex-
cess pressure through thermal expansion and avoids the
pump switching on and off too frequently.
We recommend the KESSEL suction fine/coarse filter,
floating, art. no. 85050/85051 for suctioning water from the
rainwater storage tank.
With this suction pipe, the rainwater is suctioned out of the
cistern from the cleanest zone, approx. 15 cm underneath
the surface of the water. The formation of a sediment layer
on the floor of the tank as well as suspended particles such
as pollen or soot particles on the surface of the water cannot
be completely avoided even if filters are used.
If the system is operated with a rigid suction pipe, the
suction strainer must be positioned in such a way that no so-
lids can be suctioned in. A distance of 15 - 20 cm to the floor
of the tank must be observed. In addition, a backflow pre-
venter must be installed.
The suction pipe must be laid with a constant gradient to
the cistern to avoid air pockets.
If this is not possible, an opening for ventilation or filling must
be provided at the highest point in the suction pipe.
The distance between the pump and the rainwater stor-
age tank should be as short as possible; please heed the
“Technical data” chapter.
The suction pipe must be absolutely leakproof to gua-
rantee automatic pump suctioning.
The suction pipe must be laid at a frost-free depth to pre-
vent it freezing.
We recommend always using a KG empty conduit DN
150 when routing all pressure and inlet pipes and other
connection lines in order to make access easier for any ser-
vicing and repair work later.
The backwater-proof KESSEL empty conduit seal (art.-
no. 85412) should be used wherever pipes pass from the ci-
stern into a cellar room.
Zähler
Suction
connection
Pressure
connection
Suction
connection
Pressure
connection
Suction
connection
Pressure
connection
Pressure
connection
to the garden
to the toilet and
the washing
machine
Pipe routing left
Pipe routing
right
Pipe routing
left/right
