Description And Function; General Description; Description Of The Product; Wilo-Fireset - Electric - See Fig. 2 - Position - Wilo -FireSet UL FM Notice De Montage Et De Mise En Service

6 Description and function

6.1 General description

The Wilo-FireSet (Fire-extinguishing system) is
built in several variants and models to satisfy cus -
tomer requirements using the following main
components:
• Base frame
• Wilo-SCP FF pump, coupled to an electrical motor
or diesel motor
• Coupling for electric motor
• Cardan joint if diesel motor
• Coupling guard
• Electronic switchgear
• Batteries in the case of a diesel motor
• Cabling between motor and switchgear
• Air vent valve
• Pressure gauge discharge
• Pressure gauge suction

6.2 Description of the product

6.2.1 Wilo-FireSet - Electric - See Fig. 2 - Position:

1.
2.
3-4
5.
6.
7.
8.
9.

6.2.2 Wilo-FireSet - Diesel - See Fig. 2a - Position:

1-7-8-10-11-
12-13-15-16
2.
3-4
5.
6.
14.
17.
18.

6.2.3 Switchgear

• Ensure complete automatic operations of the pump
• Waterproof, protection class IP54.

6.3 Function of the product

The operational logic for the Wilo-FireSet unit is
based on starting of the pump when the pressure
drops down and reaches the set level. The pump
stop is possible manually or automatically,
according the relative standard. The pressure sen -
sor to start the fire pump is normally located in the
lower left-hand side of fire pump switchgear and
must be connected to the FF system (see Fig. 3)
In the case of a jockey pump, it is the first to start
when the pressure drops and maintains the fire-
extinguishing system under pressure. Start and
stop control is set via the suitably calibrated
pressure switch.
Installation and operating instructions Wilo-FireSet UL FM
Electric motor
Coupling guard
Switchgear
Wilo-SCP FF split case pump
Base frame
Air vent valve
Pressure gauge
Coupling
Base frame components/parts
Diesel motor
Coupling guard
Cardan joint
Switchgear
Wilo-SCP FF split case pump
Pressure gauge
Air vent valve
To set pressure switches/sensor - usual setting values:
•Fire Pump Stop Point = Fire Pump Shut Off Pressure +
minimum Static Suction Pressure
•Jockey Pump Stop Point = Fire Pump Stop Point
•Jockey Pump Start Point = Jockey Pump Stop Point -
10 psi (0,69 bar)
•Fire Pump Start Point = Jockey Pump Start Point - 5 psi

7 Installation and electrical connection

DANGER! Risk of electric shock!
The personnel dedicated to the connection of
electrical equipment and motors must be skilled
for such work. They must make the connection
according to the wiring diagrams supplied, in
accordance with regulations and laws in force. In
addition, they must ensure that they have shut
down power before performing any operation
which provides the possible contact with the
electrical parts. Check earth continuity.

7.1 Installation

Install the Wilo-FireSet in an easily accessible
pump room, ventilated and protected from rain
and frost.
Ensure that the Wilo-FireSet can pass through the
room's door.
For maintenance works, a sufficient place must be
provided. The unit must be easily accessible.
The installation place has to be horizontal and flat.
It must be robust enough to support the system's
weight.
The pump room must be exclusively dedicated to
the fire equipment, directly accessible from out -
side, and must have a fire resistance according to
NFPA20 standards.
The location of and access to one or more fire
pump rooms must be designed with the local fire
department.
Fire pumps that are outdoors must be at least
50 ft (15.3 m) away from any buildings and other
fire exposures.
Protect fire pump buildings or rooms enclosing
diesel motor pump drives and day tanks with an
automatic sprinkler system installed in accord -
ance with NFPA 13 as an Extra Hazard Group 2
occupancy.
Protect fire pump buildings or rooms enclosing
electric fire pump drives with an automatic sprin -
kler system installed in accordance with NFPA 13
as an Ordinary Hazard Group 1 occupancy.
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