Description Of The Product And Accessories; General Description; Components Of The Pressure-Boosting System - Wilo SiBoost Smart Série Notice De Montage Et De Mise En Service

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6 Description of the product and accessories

6.1 General description

The Wilo SiBoost Smart pressure-boosting system
is supplied ready for connection as a compact unit
with built-in controls. It consists of 2 to 4 non
self-priming multistage vertical high-pressure
centrifugal pumps which are supplied completely
piped to each other and mounted on a common
base frame. The only connections that have to be
made are for the inlet and pressure pipes and the
electrical mains connection. It may also be neces-
sary to install the supplied accessories ordered
separately.
The pressure-boosting system with non self-
priming pumps can be connected both indirectly
(Fig. 8 - system separation by a non-pressurised
water break tank) and directly (Fig. 7 - connection
without separation of the system) to the water
supply mains. Detailed instructions for the pump
type used can be found in the attached installa-
tion and operating instructions for the pump.
Observe the relevant, applicable regulations and
standards when using the system for drinking
water supply and/or fire extinguishing supply.
The system must be operated and maintained
in accordance with the relevant instructions
(in Germany according to DIN 1988 (DVGW))
so that the operational reliability of the water
supply is permanently guaranteed and neither
the public water supply nor other consumption
installations are detrimentally affected. The
respective applicable regulations or standards
(see section 1.1) on the connection and type of
connection to public water supply networks are
to be observed. They may be supplemented by
regulations of the water supply companies
(WVU) or the responsible fire protection author-
ity. In addition, the local conditions (e.g. a supply
pressure that is too high or fluctuating considera-
bly and which might require the installation of a
pressure reducer) must also be observed.

6.2 Components of the pressure-boosting system

The complete system is made up of various main
components. The scope of delivery includes sepa-
rate installation and operating instructions for the
relevant operating parts/components (see also
the installation plan provided).
Mechanical and hydraulic system components
(Fig. 1a, 1b, 1c and 1d):
The compact unit is mounted on a base frame
with vibration absorbers (3). It consists of a
group of 2 to 4 high-pressure multistage centrif-
ugal pumps (1), which are combined by means of
an inlet manifold pipe (4) and a pressure collect-
ing pipe (5) to form a complete system. Each
pump is fitted with a (6) shut-off valve on the
intake side, a (7) shut-off device on the pressure
side and a non-return valve (8) on the pressure
side. A module with isolation valves is fitted on
the pressure collecting pipe, which contains a
12
pressure sensor (12) and pressure gauge (11)
(see also Fig. 2a and 2b).
For systems with pumps of the MVISE, Helix V and
Helix VE series, an optional 8-litre diaphragm
pressure vessel (9) with a throughflow
fitting (10) (for throughflow according to
DIN 4807 – part 5) (see also Fig. 3) can be fitted to
the pressure collecting pipe (5). For systems with
pumps of the Helix EXCEL series an optional kit
with an 8-litre diaphragm pressure vessel is fitted
(see Fig. 5).
On systems with frequency control is fitted
to every pump (SCe) as standard, the inlet
collecting pipe is also fitted with an assembly
that can be shut off with an additional pressure
transmitters (12) and pressure gauge (11)
(see Fig. 6d and 6e).
For systems without frequency control, an assem-
bly for a low-water cut-out switchgear (WMS)
(14) can optionally be fitted or mounted to every
pump at a later date at the inlet collecting pipe
(see Fig. 6a and 6c).
The control device (2) is mounted directly on the
base frame and ready-wired to the electrical com-
ponents of the system. In the case of larger sys-
tems, the control device is accommodated in a
separate free-standing cabinet (BM) and the elec-
trical components are pre-wired to the corre-
sponding connection cable. For the separate free-
standing cabinet (BM), the final wiring is done by
the customer (see section 7.3 and the documen-
tation included with the control device).
The present installation and operating instruc-
tions contain only a general description of the
complete system.
Systems with Helix EXCEL series pumps (except
52 series pumps) are additionally equipped with a
unit casing (Fig. 1c, 15a and 15b) around the
valves and manifold.
High-pressure multistage centrifugal pumps (1):
Different types of high-pressure multistage cen-
trifugal pumps are installed in the pressure-
boosting system depending on the application
and the performance parameters required. Their
number can vary from 2 to 4 pumps. Pumps with
built-in frequency converters (MVISE, Helix VE or
Helix EXCEL) or without built-in frequency con-
verters (Helix V) are used. The attached installa-
tion and operating instructions provide
information on the pumps.
Control device (2):
The SC series control device is used to control and
regulate the SiBoost Smart pressure-boosting
system. The size and components of the control
device may vary depending on the design and per-
formance parameters of the pumps. The attached
installation and operating instructions, and the
corresponding circuit diagram provide information
on the control device installed in this pressure-
boosting system.
WILO SE 08/2018