Wilo -FireSet UL FM Notice De Montage Et De Mise En Service page 54

Legend
A Pump discharge connection
AL Automatic line indicating plate (QTY 2)
B Motor cooling water piped to drain
BL Bypass line indicating plate (QTY 2)
C Raw water outlet flow
PG 0-60 psi pressure gauge
PGS Pressure gauge shut-off valve
PK Piping kit to charge air cleaner or heat
exchanger
PR Pressure regulator (QTY 2)
PS1 Pressure sensor (cooling loop)
PS2 Pressure sensor (heat exchanger outlet)
SHV Shut-off valve (QTY 4)
ST WYE strainer (QTY 2)
SV Solenoid valve (not used with vertical tur -
bine fire pumps)
TS 105'F temperature switch
UN Union (QTY 2)
Exhaust air for combustion
Legend
1 Air supply ventilator
2 Air discharge ventilator
3 Dampers
4 Condensate drain plug
5 Exhaust insulation
6 Flexible exhaust connection
7 Rain cap
8 Wall bushing
WARNING:
The backpressure to the motor exhaust consider -
ably influences the power of the motor and its
thermal loadings. Excessive backpressure
measured at the motor exhaust outlet connection
(point "a") decreases power, increases the tem -
perature of the exhaust gas, produces smoke,
Installation and operating instructions Wilo-FireSet UL FM
increases fuel consumption, sulphurises the inter -
nal cooling water (with subsequent damage to the
lubricants) and produces serious consequences
for other motor components (for example, turbo -
charger, etc.).
INSTALLATION GUIDELINES:
1. (G). Refer to NFPA-20 2016, section 11.5 for
additional information. Other piping systems
are possible. The diagram shown is for passage
through wall, and silencer side in, side out.
2. The exhaust piping system and the silencer
must be suitable for the use intended, and the
exhaust backpressure must not exceed the
recommendations of the motor manufacturer.
(see warning below)(11.5.2.5)
3. The exhaust pipe must not be smaller in diam -
eter than the motor exhaust outlet.
4. The exhaust pipe must be covered with a
high-temperature insulation or guarded oth -
erwise to protect personnel from injury.
(11.5.2.4)
5. The system must be supported in such a way
that there is no weight on the flexible exhaust
connection.
6. The exhaust pipe must be positioned in such a
way as to prevent the exhaust gases from
returning to the pump room
7. The Exhaust pipe and the point of passage
from the pump room must be constructed or
insulated so that it does not cause a fire igni -
tion risk to the structure.
8. The exhaust system must terminate outside
the structure at a point where hot gases,
sparks, or products of combustion are dis -
charged to a safe location.
9. The exhaust system terminations must not be
directed towards combustible material or
structures, or into atmospheres containing
flammable gases, flammable vapors, or com -
bustible dust.
10. Exhaust pipes must be installed with clear -
ances of at least 9 in. (229 mm) to combustible
materials. (11.5.2.6)
11. Exhaust pipes passing directly through com -
bustible roofs must be guarded at the point of
passage by ventilated metal Wall bushings
that extend not less than 91inch. (229 mm)
below roof construction and are at least
61inch. (152 mm) larger in diameter than the
exhaust pipe. (11.5.2.7)
12. Exhaust pipes passing directly through com -
bustible walls or partitions must be guarded at
the point of passage by one of the following
methods;
(1) Metal ventilated thimbles not less than 12 in.
(305 mm) larger in diameter than the exhaust
pipe.
(2) Metal or burned clay thimbles built in brick -
work or other approved materials providing
not less than 8 in. (203 mm) of insulation
between the thimble and construction mate -
rial.
English
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