P/N
06
‐
791
‐
4
(Rev.
4)
Page
39
704
SW
10
th
Street,
P.O.
Box
610,
Blue
Springs,
Missouri
64013
‐
0610
U.S.A.
●
Phone:
(816)
229
‐
3405
●
www.fike.com
3.2.
Electrical
Clearances
All
water
mist
system
components
(e.g.,
nozzles,
piping,
detectors,
etc.)
shall
be
located
to
maintain
minimum
clearances
from
unenclosed
and
uninsulated
energized
electrical
components
in
accordance
with
NFPA
70,
National
Electrical
Code.
Refer
to
NFPA
750,
Standard
on
Water
Mist
Fire
Protection
Systems
for
further
information
and
clearance
data.
3.3.
Alarm
Check
Valve
Fike
recommends
using
the
Wet
Alarm
Check
(WAC)
valve
in
conjunction
with
the
DuraQuench
system;
however,
any
FM
Approved
wet
alarm
check
valve
can
be
used
as
long
as
it
complies
with
the
following
criteria:
1.
Valve
must
be
capable
of
handling
the
maximum
working
pressure
created
by
the
DuraQuench
system
232
psi
(16
bar).
2.
Valve
must
be
capable
of
handling
the
water
flow
requirements
required
by
the
DuraQuench
system.
3.
Valve
must
be
constructed
of
corrosion
resistant
materials
in
order
to
minimize
the
risks
of
clogging
the
water
mist
nozzles.
4.
Friction
losses
associated
with
the
valve
must
be
compatible
with
the
performance
criteria
of
the
system.
5.
Valve
must
be
FM
Approved
and
be
capable
of
sounding
an
alarm
upon
activation
of
one
OH
‐
VSO
nozzle.
Where
the
WAC
valve
is
used,
refer
to
Fike
document
06
‐
791
‐
5.
Otherwise,
refer
to
the
documentation
supplied
with
the
selected
deluge
control
valve.
3.4.
Pump
Skid
Test
Header
A
test
header
connection
shall
be
provided
on
all
systems
where
the
system
design
pressure
is
greater
than
175
psi
(12
bar)
in
accordance
with
NFPA
750.
The
test
header
provides
a
means
of
measuring
the
performance
of
the
pump
during
the
acceptance
test
and
during
annual
testing.
The
DuraQuench
pump
skid
is
equipped
with
an
isolation
valve
and
pipe
flange
to
facilitate
connection
of
the
test
header
components.
See
Section
4.1.8.3.
The
test
header
components
can
be
purchased
from
Fike
or
from
other
suppliers
as
stipulated
in
Section
2.1.
3.5.
Fire
Department
Connection
A
fire
department
connection
(FDC)
shall
be
provided
on
the
water
mist
system
where
required
by
the
Local
Authority
Having
Jurisdiction.
It
shall
be
determined
that
the
local
fire
department
pumpers
are
capable
of
providing
adequate
pressure
to
supply
the
water
mist
system.
Pumper
capacity
shall
be
verified
and
compared
to
the
system
requirements
prior
to
installing
the
FDC.
See
Section
4.1.8.4.
The
fire
department
connection
components
can
be
purchased
from
Fike
or
from
other
suppliers
as
stipulated
in
Section
2.1.
3.6.
Check
Valves
and
Backflow
Preventers
Check
valves
and/or
backflow
preventers
shall
be
installed
in
the
system
suction
and
discharge
piping
in
accordance
with
the
requirements
of
the
following
codes
and
standards
(where
applicable):
NFPA
750,
Standard
on
Water
Mist
Fire
Protection
Systems;
NFPA
20,
Standard
for
the
Installation
of
Stationary
Pumps
for
Fire
Protection;
FM
Property
Loss
Prevention
Data
Sheet
4
‐
2,
Water
Mist;
and
the
requirements
of
the
authority
having
jurisdiction
(AHJ).
Check
valves
or
backflow
preventers,
where
installed,
must
be
included
in
the
hydraulic
calculations
for
the
system.
Summary of Contents for DuraQuench
Page 93: ......
