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DRYER
VENTING
REQUIREMENTS
if
an
Exhaust
Hood
Cannot
be
Used
Multiple
Dryer
Venting
The
outside
end
of
main
vent
should
have
a
sweep
elbow
directed
downward.
12"
min.
(305
mm)*
24"
min.
(610
mm)
ht
If
main
vent
travels
vertically
through
the
roof,
rather
than
through
wall,
install
a
180°
sweep
elbow
on
end
of
vent
at
least
2
ft.
(610
mm)
above
surface
of
roof.
*Minimum
clearance
above
any
accumulation
of
snow,
ice,
or
debris
such
as
leaves
The
opening
in
wall
or
roof
shall
have
a
diameter
1/2"
(13
mm)
larger
than
vent
diameter.
Vent
should
be
centered
in
opening.
Do
not
install
screening
over
end
of
vent
for
best
performance.
A
main
vent
can
be
used
for
venting
a
group
of
dryers.
The main
vent
should
be
sized
to
remove
5663
I/min.
(200
CFM)
of
air
per
dryer.
Large-capacity
lint
screens
of
proper
design
may
be
used
in
main
vent
if
checked
and
cleaned
frequently.
The
room
where
the
dryers
are
located
should
have
make-up
air
equal
to or
greater
than
CFM
of
all
the
dryers
in
the
room.
Back-draft
dampers
are
available
from
your
distributor
and
should
be
installed
in
the
vent
of
each
dryer
to
keep
exhausted
air
from
returning
into
dryers
and
to
keep
exhaust
in
balance
within
main
vent.
Unobstructed
return
air
openings
are
required.
Although
usually
each
single-load
dryer
should
have
an
unobstructed
outdoor
air
opening
of
24
in.2
(154
cm?)
(based
on
1
in.?
[6.5
cm?]
per
1,000
Btu
[252
kcal]),
common
make-up
air
openings
are
also
acceptable.
Set
up
common
openings
so
the
make-up
air
is
distributed
equally
to
all
of
the
dryers.
Keep
in
mind
that
the
coverage
area
must
be
increased
by
33%
to
account
for
the
use
of
registers
or
louvers
over
the
openings.
Also,
make-up
air
openings
should
not
be
installed
near
the
location
where
exhaust
vents
exit
the
building.
Each
vent
should
enter
the
main
vent
at
an
angle
pointing
in
the
direction
of
the
airflow.
Vents
entering
from
the
opposite
side
should
be
staggered
to
reduce
the
exhausted
air
from
interfering
with
the
other
vents.
30°
max.
uni
Air
Flow
(
(
(
(
The
maximum
angle
of
each
vent
entering
the
main
vent
should
be
no
more
than
30°.
Keep
air
openings
free
of
dry
cleaning
fluid
fumes.
Fumes
create
acids
which,
when
drawn
through
the
dryer
heating
units,
can
damage
dryers
and
items
being
dried.
A
clean-out
cover
should
be
located
on
the
main
vent
for
periodic
cleaning
of
the
vent
system.
GAS
SUPPLY
CONNECTION
Make
Gas
Connection
A
WARNING
Excessive
Weight
Hazard
Use
two
or
more
people
to
move
and
install
dryer.
Failure
to
do
so
can
result
in
back
or
other
injury.
1.
Remove
red
cap from
gas
pipe
on
back
of
dryer.
2.
Connect
gas
supply
to
dryer.
Use
a
pipe
thread
compound
approved
for
the
type
of
gas
supplied.
If
flexible
metal
tubing
is
used,
be
certain
there
are no
kinks.
If
necessary
for
service,
open
the
toe
panel.
Use
a
putty
knife
to
press
on
the toe
panel
lock
located
at
the
center
top
of
the
toe
panel.
Pull
downward
on
the
toe
panel
to
open.
Toe
panel
is
hinged
at
the
bottom.
3.
Open
the
shut-off
valve
in
the
gas
supply
line
and
make
sure
the
dryer
has
its
own
gas
supply
opened.
4.
Test
all
connections
by
brushing
on an
approved
noncorrosive
leak-detection
solution.
Bubbles
will
show
a
leak.
Correct
any
leaks
found.
15
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