19
Ductless
Fume
Hoods
4.1.4
Exhaust
Requirements
The
exhaust
filter
area
is
especially
susceptible
to
disruptive
air
currents
or
air
drafts.
A
clearance
of
at
least
30
cm
(1’)
is
recommended
between
the
highest
point
of
the
cabinet
and
the
ceiling.
If
the
distance
is
less
than
30
cm
(1’),
the
airflow
alarm
system
may
need
re
‐
calibration.
In
fact,
for
proper
exhaust
filter
leak
scanning
purposes,
a
minimum
clearance
of
50
cm
(1’8”)
is
recommended.
4.1.5Electrical
Requirements
•
The
power
rating
for
each
model
is
shown
in
section
3.2
Technical
Specification
Summary
Table
in
Product
Specification
Section.
Ensure
that
the
outlet
is
rated
accordingly.
The
hood
will
not
work
properly
or
may
even
be
damaged
if
it
is
powered
by
an
incorrect
source.
•
The
hood’s
maximum
voltage
fluctuation
is
±2%
of
nominal
voltage,
otherwise
install
power
stabilizer.
•
The
hood
should
be
connected
to
an
unobstructed
dedicated
power
outlet(s).
•
Surge
protection
and
UPS
are
strongly
recommended
for
better
protection.
•
All
electrical
wirings
for
fluorescent
lamp,
blower
and
the
Sentinel™
controller
are
internally
wired
and
connected
to
a
single
point
junction
box
for
hook
up
by
a
qualified
electrician.
•
The
power
cable
is
located
on
the
right
hand
side
of
the
fume
hood
and
the
cord
is
2.5m
long.
When
preparing
the
installation
site,
try
to
ensure
the
outlet
is
located
to
the
right
of
the
fume
hood
for
ease
of
access.
4.1.6
Service
Line
Requirements
•
All
service
lines
should
be
installed
by
a
suitably
qualified
and
certified
engineer,
in
accordance
with
all
applicable
local,
state
and
government
regulations.
•
Service
line
attachments
should
be
equipped
with
an
emergency
shut
off
valve
that
can
be
accessed
quickly
and
with
ease,
should
the
need
arises.
•
You
should
check
with
your
local
service
installer
as
to
whether
there
is
a
need
to
install
pressure
regulators
to
reduce
the
line
pressure.
•
Your
ductless
fume
hood
can
accommodate
service
fixtures
on
the
left
or
right
hand
side
of
the
cabinet.
Make
allowance
for
the
positioning
of
service
lines
when
planning
the
installation
site
to
ensure
ease
of
access
to
emergency
shut
off
valves.
4.2
Installation
4.2.1
Connecting
the
Electrical
Supply
•
Before
connecting
any
electrical
wiring
to
the
fume
hood
structure,
first
refer
to
the
serial
label
for
the
proper
electrical
characteristics.
•
Review
the
electrical
wiring
diagrams
and
instructions
in
Appendix
section
prior
to
installation.
All
wiring
should
be
done
in
accordance
with
the
National
Electrical
Code.
•
Connect
the
supplied
electrical
cord
to
the
input
on
the
top
of
the
fume
hood.
Make
sure
the
cable
connector
is
seated
firmly
in
the
socket.
4.2.2
Safety
Labels
on
the
Fume
Hood
•
Anyone
using
the
fume
hood
should
familiarize
themselves
with
the
various
labels
displayed
in
and
on
the
fume
hood.
•
It
is
very
important
that
users
are
familiar
with
the
meanings
of
product
labeling
before
attempting
to
use
the
unit.
4.2.3
Preliminary
Cleaning
Wipe
the
interior
and
exterior
of
the
fume
hood
with
water
or
a
mild
household
detergent.
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