Pipe Connections - Kessel Aqualift F Anleitung Für Einbau, Bedienung Und Wartung

4.2 Pipe connections

All pipes are to be laid with negative slope into the Pump-
station Aqualift F Chamber – meaning that wastewater will
flow with gravity out of the pipes and into the pumpstation.
All pipe connections must be flexible connections and be in-
stalled with sound dampening accessories. The DN 100/150
pipe connections for the inlets, ventilation and cable supply
can be made with standard DN 100 or DN 150 KG piping.
(DN 150 connection)
Main inlet
Pressure outlet (OD 63 or 90 mm)
according to DIN 1986 should be
installed over the backwater level!
According to DIN EN 12056 the DN 150 wastewater inlet
pipe must have a minimum 2 % slope into the pumpstation
and should be laid as straight as possible. Bends and fittings
should be used only when necessary. The connection to the
DN 150 inlet to the pumpstation can be made with a female
/ female fitting or a DN 100 inlet pipe with reduction.
All electrical cable going to or from the pumpstation should
be installed in one DN 100 conduit pipe. This cable supply
pipe may be used for no other purpose other than running
cables. Curves / Bends in the cable supply pipe should be
handled with 30 or 45 degree fittings (no 67 or 90 degree
bends should be used which could complicate running ca-
bles at a later date).
After all electrical installations have been completed it is im-
portant that the cable supply pipe is completely air and water
tight. This can be accomplished with special cable sealing in-
serts or with special expansion foams which will prevent
odour transfer into the building as well as water / moisture
entering the basement in extreme situations.
4. Installation
(DN 100 connection)
Cable supply pipe
(DN 100 connection)
Ventilation pipe
Control unit
53
The ventilation pipe serves to compensate negative and po-
sitive pressure build-ups which can occur inside the pump-
station as it is filled with wastewater or as wastewater is pum-
ped out of the system. Since these systems are normally in-
stalled close to the building which they serve, it is recom-
mended that the pumpstation´s ventilation pipe be run to the
roof of the building – this will prevent odour nuisances in the
future. If the opportunity exists, the pumpstation´s ventilati-
on pipe can be connected to the building´s existing ventilati-
on pipe.
The pumpstation is shipped with gas-
kets for securing any connecting pipes
such as the ventilation pipe and the
cable access pipe. These gaskets
should be lubricated before KG inlet and
ventilation piping is attached.
The outlet pressure pipe (DN 50 /
80)(connected to a private or public
sewer system) should be connected to
the supplied outlet using PN 10 PEHD
DN 50 (OD 63mm) or DN 80 (OD 90mm)
piping. In the case that the DN 80 pres-
sure outlet is to be used, the DN 50 pres-
sure pipe reduction should be cut off on-
site. This connection can be done by
welding the PE pressure pipes together
or by using appropriate heavy duty pipe
connection couplings.
According to DIN EN 12056, it is important that this outlet
pipe be plumbed over the local backwater level and then
down into a ventilated wastewater pipe and into the private
or public sewer (this outlet piping must be protected against
freezing) – this can be accomplished by:
• Running the outlet pressure pipe back into the building and
then running the pipe up and above the backwater level and
then down into the main drainage pipe to the sewer, or
• Running the outlet pressure pipe outdoors above the back-
water level and then back into the main drainage pipe (this
option requires the pipe to be protected against freezing
temperatures by either burying it in a soil mound / wall or in
a heated exterior enclosure).
A direct solid connection from the pressure pipe outlet to the
building should not exist – this will prevent noise / vibrations
being transferred to the building. No other drainage or pres-
sure pipes can be connected to the pressure outlet pipe.
After the pressure pipe outlet connections have been com-
pleted, it should be pressure tested to assure that the piping
is securely fastened and is 100% watertight.