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A main exhaust vent can be used for
exhausting a group of dryers, Main
exhaust vent should be sized to
remove 200 CFM of air per dryer,
Large-capacity lint screens of proper
design may be used in the main
exhaust vent if checked and cleaned
frequently, The room where the dryers
are located should have make-up air
equal to or greater than the CFM of
all the dryers in the room,
alrnow _ ma[ncole_ot'vent -4_
Back-draft Damper Kits, Part No,
339191 B,are available from your
Whirlpool dealer and should be
installed in each dryer's exhaust vent
to prevent exhausted air from
returning into the dryers and to keep
the exhaust in balance within the
main exhaust vent, Unobstructed air
openings are required,
Each exhaust 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,
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 loads being dried.
A clean-out cover should be located
on the main exhaust vent for
periodically cleaning of the exhaust
system,
An exhaust hood should cap the
outside end of the main vent to
prevent exhausted air from returning
to the dryers, If an exhaust hood
cannot be used, the outside end of
the main duct should have a sweep
elbow directed downward, Ifthe
main vent travels vertically through
the roof, rather than through the wall,
install 180 ° sweep elbow on the end
of vent at least 2 feet (61 cm) above
the highest part of the building, The
opening wall or roof shall have a
diameter 1/2 inch (1,3 cm) larger than
the exhaust vent diameter, The
exhaust vent should be centered in
the opening,
exhaull
hood or -_( wall
U.°°T,a-
main exhaull vent
wall
180°
_Neop
2ft. (61 cm) I--_ _/elbow
min. above
highestpoint of
building main collector
vent
Do Not install screening or cap over
end of vent,
Gas requirements
Explosion Hazard
Use a new AGA or CSA
approved gas supply line.
Install a shut-off valve.
Securely tighten all gas
connections.
If connected to LP, have a
qualified person make sure gas
pressure does not exceed t3"
(33 cm) water column. Examples
of a qualified person include
licensed heating personnel,
authorized gas company
personnel, and authorized
service personnel.
Failure to do so can result in
death, explosion, or fire.
OBSERVEALLGOVERNING CODES
AND ORDINANCES.
An This installation must conform
with local codes, or in absence of
local codes with the National Fuel
Gas Code ANSI Z223,1/NFPA 54 or the
CAN/CGA - B149 installation codes,
B n The design of this dryer has
been certified by the CSA
International for use at altitudes up to
10,000 feet (3048 m) above sea level
at the B,T,U, rating indicated on the
model/serial plate, Burner input
adjustments are not required when
the dryer is operated up to this
elevation,
When installed above 10,000 feet
(3048 m), a four percent (4%)
reduction of the burner B,T,U, rating
shown on the model/serial plate is
required for each 1,000 foot (305 m)
increase in elevation, For assistance
when converting to other gas types
and/or installing above 10,000 feet
(3048 m) elevation, contact your
local service company,
Page 4
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