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5 Technical information
5.1 Type key
COF-2BL32-140-2.2-T-V-CPI
COF
= Version
2
= Number of pumps
BL
Pump type
32
= Nominal diameter of the pump
discharge outlet (in mm)
140
= Nominal diameter of the impeller
(in mm)
2.2
= Motor power (in kW)
T
= Power supply voltage -
3~ 400 V
V
Protection against low water level
depending on the type of water supply
of the pressure-boosting system:
V = Municipal water supply
B = Reservoir
CPI
CPI = Switchgear with insulation
monitoring device
blank = Switchgear without an
5.2 Technical data
• Maximum operating pressure: 10 bar
• Permitted water temperature: +0 °C to +45 °C
• Permitted ambient temperature: +0 °C to +40 °C
• Supply voltage: 3~ 400 V ±10 %
• Frequency: 50 Hz
Ensure that the general installation complies with
safety standard NF-C 15-100.
5.3 Scope of delivery
It is crucial that, prior to installation, you are aware
of all main components that make up the pres-
sure-boosting system.
See the pressure-boosting system illustration in
Fig. 1:
1. Horizontal monoblock pumps
2. Baseplate for support and fixation
3. Switch cabinet and automation control
4. Suction manifold
5. Discharge manifold
6. Pressure sensor
7. Pressure gauge
8. Low water cut-out switch (version using
municipal water supply)
9. Drain cock
10. Flow switch: to be positioned according to the
direction of flow
11. Diaphragm expansion tank (not supplied,
must be ordered separately)
12. By-pass option: provides a direct water supply
without using pumps when the municipal
water pressure is sufficient.
13. Female cap (dimensions depending on the
model)
14. Male cap ½"
NOTICE:
Each pump is equipped with:
Suction-side gate valve
Installation and operating instructions Wilo-COF-2 BL
insulation monitoring device
Discharge-side non-return valve and gate valve
Each collector tank is also fitted with a plug.
5.4 Variants
During the technical product definition, the pres-
sure-boosting system can be configured accord-
ing to 2 different variants:
Variant 1: Protection against low water levels
• Version "V" (municipal water supply): The pres-
sure-boosting system is supplied with a cut-out
switch connected to the suction manifold.
NOTICE: MINIMUM PERMISSIBLE PRESSURE: 1 BAR
• Version "B" (reservoir): The pressure-boosting
system is supplied with a float switch to install in
the suction reservoir.
Variant 2: Insulation monitoring device
• With CPI: The switchgear contains CPI for the
pump and monitors the motor insulation and
earthing.
• NOTICE: This equipment is mandatory for energy-
related products (ErP).
• Without CPI
5.5 Switchgear
The switchgear (Fig. 1, pos. 3) protects and con-
trols the pressure-boosting system.
Refer to the switchgear instructions for more
detailed information.
5.6 Accessories
The following accessories are available for pur-
chase:
• Gate valves
• Vibration damping hoses
• Pressure reducer
• Pressure tank
• Strainer foot valve
• Warning light
• Start-up tank
Accessories must be ordered separately.
6 Description and function
6.1 Description of the product
The pressure-boosting system is supplied with its
pipework ready for connection. The customer
must connect the suction and discharge manifolds
correctly.
The customer must also connect the switchgear
to the mains power supply.
When making the connection to the municipal
water supply, regulations and currently valid
standards must be observed and, as necessary,
fulfilled pursuant to the regulations of water dis-
tribution companies.
In addition, local specificities must be taken into
account: for example, if the suction pressure is too
high or variable, a pressure reducer must be
installed.
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