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5.1 Foundation and anchorage
The anchoring system must guarantee the stability and
alignment of the fire pump set over time and have
mechanical characteristics such as withstanding static
and dynamic loads, as well as vibrations of the unit during
its operation.
The design and execution of the anchorage of the pump
set must be properly carried out in accordance with the
relevant standards and regulations by designer appointed
by the client.
Installations in territories with seismic characteristics must
also be carefully evaluated.
If a seismic analysis is required, consult the governing
bodies for grouting and foundation requirements.
Incorrect or not lasting anchorage may cause serious
damage to the pump set or even to the whole system.
In order to avoid critical situations, we recommend that
you contact a civil engineering designer or an equivalent
to check and approve the support structure and
anchorage system.
The Hydro EN pump set must be placed on a flat surface such as
a solid floor or a concrete foundation.
As a rule of thumb, the weight of the concrete foundation should
be at least 1.5 times the weight of the pump set.
The width and length of the foundation must be larger than the size
of the pump set it accommodates.
The fastening must ensure tightness over time and must withstand
the vibration of the system during operation.
5.2 Connecting the priming circuit
In accordance with the requirements of the EN 12845 standard, the
pumps are equipped with connections for priming as a mandatory
requirement for suction-lift installation.
1. Connect the priming circuit by using the 2-inch connection on
the pump set.
• Hydraulic components are not included in the scope of
delivery of the pump set.
5.3 Connecting the recirculation circuits
In accordance with the requirements of the EN 12845 standard, the
pumps are equipped with connections for the recirculation circuit.
1. In the case of electric pumps or diesel pumps with direct air
cooling, use the 1-inch plug available on the outlet side to
connect the recirculation circuit to the inlet tank.
2. In the case of diesel pumps with water/water heat exchanger
cooling system, the circulation is performed through the cooling
system.
• See the dedicated section for diesel pumps with water/water
heat exchanger.
• Use the functional diagram as reference.
Related information
4.3 Diesel pumps with water/water heat exchanger
7. Functional diagram
16
6. Electrical installation
WARNING
Electric shock
Death or serious personal injury
‐
Before any inspection, maintenance, service or repair
of the product, make sure that the mains switch is in
OFF position, locked and tagged. Attach suitable
isolation warning signs to prevent inadvertent
reconnection.
‐
Typically, there is more than one control panel. Make
sure you have disconnected the correct panel with
respect to the section of the system on which you
have to intervene.
WARNING
Electric shock
Death or serious personal injury
‐
Before starting any connection, check the compatibility
of the system power supply voltage .
DANGER
Electric shock
Death or serious personal injury
‐
Do not do maintenance work when the power supply is
ON.
The design of the electric system and the electrical
installation must be carried out by a qualified electrician,
appointed by the client, in accordance with local
regulations.
The terminals and wires upstream of the main switch of
the control panel are supplied even if the switch is in OFF position.
Make sure that all connections, including the electrical
connections, are correct and are carried out in accordance with all
the applicable regulations and provisions in terms of security and
fire prevention.
Make sure that the control panel and the duty and jockey pumps
are suitable for the mains voltage to be used with.
Make sure that the control panel is mechanically disconnected from
the frame of the diesel engine and is fixed to the ground.
A robust earth connection between the engine frame and the
control panel stand must be made with a cable of a large cross-
section (equal to or larger than that of the delivered cable)
or a metal braid.
Use connection cables of adequate cross-section for
the current required by the pump and in compliance with
the requirements of the EN 12845 standard.
Refer to the wiring diagrams supplied in the scope of delivery for
the electrical connections of the control panel.
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