Product Information - Wilo CO MVI Installation And Operating Instructions Manual

CAUTION!
Risk of damage!
The equipment must be transported by means of
authorized load carriers. Stability of the load must be
ensured, since the pumps have been constructed in a way
that shifts their center of gravity to the top. Transport
straps or ropes must be secured to the existing transport
lugs or placed around the base frame. The pipes are not
designed to withstand loads and should not be used to
secure loads in transit.
CAUTION!
Risk of damage! The system must be protected against
moisture, frost and heat and also mechanical damage by
means of suitable measures!
Unpack. Carefully inspect the Wilo-CO MVI booster or the
accessory parts for possible damage and notify the delivery
company (forwarder) or Wilo after-sales service. After
removing the packing, store or install the unit according to
the installation conditions described (see section entitled
Installation). Concealed damage will not be revealed until
after start-up, at which time notify Wilo after-sales service.
DANGER!
Risk of bodily harm or death! A storage tank, if used,
must be vented to atmosphere and unpressurized! Over-
pressurizing a storage tank can cause an explosion!
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Product Information

4.1 Applications
Pressure boosting systems are designed for boosting and
maintaining the pressure of water supply systems. They are
used as:
• Potable water supply systems
• High-rise apartments
• Hospitals
• Offices
• Industrial buildings
The pressure boosting system's structure, function and
requirements comply with the following guidelines and
directives:
• Drinking Water Ordinance – NSF-372/61 rated for
74.3°F (23°C)
• UL QCZ (pending at the time of this printing)
• DOE regulations
The Wilo-CO MVI pressure boosting system must be
connected directly to a water main, or indirectly to a storage
tank. These storage tanks are open to atmospheric pressure
and should never be pressurized.
Wilo-CO MVI - Installation and Operation Manual
4.2 Type Key (Description)
Example: Wilo-CO3 MVI-1SB-160-2/2-20HP-304E-230V~3
Wilo Brand Name
CO Product Family: Pressure Booster Systems (1 VFD Per Pump)
3 Number of Pumps
MVI Series Designation of pumps
1SB One Stand-By Pump Selected (Reduced manifold)
160 Nominal Flow Rate in US Gallons per Minute
-2 Number of Stages (Impellers in Series)
/2 Number of Trimmed Impellers
20HP Horse Power per Pump
304 304 Stainless Steel Pumps
E EPDM Elastomers
230V Voltage
~3 Phase
5 Description of the product and accessories
5.1 General description
The Wilo-CO MVI booster is a compact system that is
supplied completely piped and ready to connect. The only
connections that have to be made are for the inlet and
pressure pipes and the main power connection. It may also
be necessary to install accessories ordered separately but
included in the delivery.
The Wilo-CO MVI booster is supplied with 2-4 non-self-
priming pumps that can be connected indirectly (non-
pressurized water storage tank) or directly to the water
supply main from the city. Vent any air out of the MVI
pumps before start-up to prevent seal failure or unexpected
high pressure thrusts that can damage system components
(See Fig. 5a).
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