Expansion Joints (Accessory); Flexible Connection Lines (Accessory) - Wilo SiBoost-Smart-2 Helix V605 Notice De Montage Et De Mise En Service

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The entire bottom of the tank must be in contact
with a solid bearing surface. The maximum volume
of the tank concerned must be considered when
designing the load-bearing capacity of the bear-
ing surface. When installing, sufficient space must
be allowed for overhaul work (at least 600 mm
above the tank and 1000 mm on the connection
sides). The tank must not slant when full, because
an uneven load can lead to its destruction.
The non-pressurised enclosed PE tank (i.e. under
atmospheric pressure) which we supply as an
accessory must be installed according to the
transport and installation instructions included
with the tank. The following procedure applies
generally: Before commissioning, connect the
tank so that it is free of mechanical stresses. This
means that the connection must be made using
flexible components, like expansion joints or
hoses. The tank overflow must be connected
according to the applicable regulations (in Ger-
many, DIN 1988/T3). Heat transmission through
the connection pipes must be avoided by taking
suitable measures. PE tanks in the Wilo range are
only designed to accommodate clean water. The
maximum temperature of the water must not
exceed 50 °C.
CAUTION! Risk of damage to property!
The tanks are designed for static operation at
their nominal capacity. Subsequent changes can
affect the static forces and lead to inadmissible
deformation or even destruction of the tank.
The electrical wiring (for low-water protection
device) to the system's control device must also
be connected before the pressure boosting sys-
tem is commissioned (see the details in the instal-
lation and operating instructions for the control
device).
NOTE!
Before filling the tank, clean it and flush it!
CAUTION! Health hazard and risk of damage!
You must not walk on plastic tanks. Walking on
the cover or subjecting it to loads can lead to
accidents and result in damage.

7.2.8 Expansion joints (accessory)

For stress-free installation of the pressure boost-
ing system, connect the pipes using expansion
joints (Fig. 9 - B). The compensators must be
Nominal diameter
Connection
DN 40
DN 50
DN 65
Table 2
NOTE!
Flexible connection lines are subject to wear in
operation. Check regularly for leaks or other
defects (see recommendations in DIN 1988).
40
Thread Tapered male thread
Screwed connection
Rp 1½"
Rp 2"
Rp 2½"
equipped with a structure-borne noise-insulating
extension limiter to absorb the reaction forces
that occur. The expansion joints must be installed
stress-free in the pipes. Alignment errors or pipe
displacement must not be compensated for using
expansion joints. When installing, the screws must
be tightened uniformly, working across diagonals.
The ends of the bolts must not project beyond the
flange. If welding work is done nearby, the expan-
sion joints must be covered for protection (sparks,
radiated heat). The rubber parts of expansion
joints must not be painted and must be protected
from oil. In the installation, the expansion joints
must be accessible for inspection at any time and
therefore must not be covered by the pipe insula-
tion.
NOTE!
Expansion joints are subject to wear. It is neces-
sary to regularly check for cracks or blisters,
exposed fabric or other defects (see recommen-
dations in DIN 1988).

7.2.9 Flexible connection lines (accessory)

In the case of pipes with threaded connections,
flexible connection lines can be used for stress-
free installation of the pressure boosting system
and in the event of slight pipe displacement
(Fig. 10 - B). The flexible connection lines
Wilo range
consist of a high quality stainless
steel corrugated hose, sheathed with stainless
steel braiding. A flat-sealing stainless steel screw
connection with an internal thread is provided at
one end for fitting to the pressure boosting sys-
tem. An external pipe thread is provided at the
other end to connect to further pipework.
Depending on the size, certain maximum admissi-
ble deformation limits must be met (see Table 2
and Fig. 10). Flexible connection lines are not suit-
able for absorbing axial vibrations and compen-
sating corresponding movements. A suitable tool
must be used to prevent kinking or twisting when
fitting. In the case of angular displacement of the
pipes, it is necessary to fix the system to the floor,
taking into account suitable measures to reduce
structure-borne noise. The flexible connection
lines in the system must be accessible for inspec-
tion at any time and must therefore not be cov-
ered by the pipe insulation.
Max. bend radius
RB in mm
R 1½" 260
R 2" 300
R 2½" 370
in the
Max. bend angle
BW in °
60
50
40
WILO SE 04/2013