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en - Original instructions
1) This limit refers to hot water
For special requirements, contact the Sales and
Service Department.
Maximum number of starts per hour
kW
0.25 -
4.00 -
3.00
7.50
Starts
60
40
per
hour
Noise level
For the measured surface sound pressure levels of
pump alone and pump equipped with standard sup-
plied motor, see
Table 7
4 Installation
Precautions
WARNING:
• Observe accident prevention regula-
tions in force.
• Use suitable equipment and protec-
tion.
• Always refer to the local and/or na-
tional regulations, legislation, and co-
des in force regarding the selection of
the installation site, plumbing, and
power connections.
Electrical Hazard:
• Make sure that all connections are
performed by qualified installation
technicians and in compliance with
the regulations in force.
• Before starting work on the unit,
make sure that the unit and the con-
trol panel are isolated from the power
supply and cannot be energized. This
applies to the control circuit as well.
Grounding (earthing)
Electrical Hazard:
• Always connect the external protec-
tion conductor to ground (earth) ter-
minal before making other electrical
connections.
• You must ground (earth) all electrical
equipment. This applies to the pump
equipment, the driver, and any moni-
toring equipment. Test the ground
(earth) lead to verify that it is connect-
ed correctly.
• If the motor cable is jerked loose by
mistake, the ground (earth) conductor
should be the last conductor to come
loose from its terminal. Make sure
that the ground (earth) conductor is
longer than the phase conductors.
This applies to both ends of the motor
cable.
• Add additional protection against le-
thal shock. Install a high-sensitivity
16
11 - 15 18.5 -
30 - 37
22
30
24
16
.
differential switch (30 mA) [residual
current device RCD].
4.1 Facility requirements
4.1.1 Pump location
DANGER:
Do not use this unit in environments that
may contain flammable/explosive or
chemically aggressive gases or powders.
Guidelines
Observe the following guidelines regarding the loca-
tion of the product:
• Make sure that no obstructions hinder the normal
flow of the cooling air that is delivered by the mo-
tor fan.
• Make sure that the installation area is protected
from any fluid leaks, or flooding.
• If possible, place the pump slightly higher than
the floor level.
• The ambient temperature must be between 0°C
(+32°F) and +40°C (+104°F).
• The relative humidity of the ambient air must be
less than 50% at +40°C (+104°F).
• Contact the Sales and Service Department if:
• The relative air humidity conditions exceed
the guidelines.
• The room temperature exceeds +40°C
(+104°F).
• The unit is located more than 1000 m
(3000 ft) above the sea level. The motor per-
formance may need to be de-rated or re-
placed with a more powerful motor.
For information about which value to de-rate the mo-
tor with, see
Table 8
.
Pump positions and clearance
Provide adequate light and clearance around the
pump. Make sure that it is easily accessible for in-
stallation and maintenance operations.
NOTICE:
Do not exceed the pumps suction capacity as this
could cause cavitation and damage the pump.
4.1.2 Piping requirements
Precautions
WARNING:
• Use pipes suited to the maximum
working pressure of the pump. Fail-
ure to do so can cause the system to
rupture, with the risk of injury.
• Make sure that all connections are
performed by qualified installation
technicians and in compliance with
the regulations in force.
NOTICE:
Observe all regulations issued by authorities having
jurisdiction and by companies managing the public
water supplies if the pump is connected to a public
water system. If required, install appropriate back-
flow-prevention device on the suction side.
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