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If an Exhaust Hood Cannot be Used
The outside end of main vent should have a sweep elbow
directed downward.
12" minimum
(305 mm)*
* Minimum clearance above any
accumulation of snow, ice, or debris
such as leaves
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.
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.
Multiple Dryer Venting
A main vent can be used for venting a group of dryers. The main
vent should be sized to remove 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 Damper Kit, Part No. 3391910, is 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.
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.
Air flow
The maximum angle of each vent entering the main vent should
be no more than 30°.
† TEFLON
is a registered trademark of Chemours.
®
24" minimum
(610 mm)
30˚ maximum
DRYER GAS SUPPLY
REQUIREMENTS-USA AND
CANADA
WARNING
Explosion Hazard
Use a new CSA International approved gas supply line.
Install a shut-off valve.
Securely tighten all gas connections.
If connected to propane, have a qualified person make
sure gas pressure does not exceed 13" (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.
Type of Gas
This dryer is equipped for use with natural gas. It is
design-certified by CSA International for propane and butane
gases with appropriate conversion. No attempt shall be made to
convert dryer from gas specified on serial/rating plate for use with
a different gas without consulting the serving gas supplier.
Conversion must be done by a qualified service technician.
Gas conversion kit part numbers are listed on gas valve burner
base.
Gas Supply Line
Recommended method
Provide a gas supply line of 1/2" (13 mm) rigid (IPS) pipe to dryer
location. Pipe joint compounds that resist action of propane gas
must be used. Do not use TEFLON
piping or tubing size can be 1/2" (13 mm) minimum. Usually,
propane gas suppliers determine size and materials used in the
system.
Gas supply pressure testing
A 1/8" (3 mm) NPT minimum plugged tapping, accessible for
gauge testing, must be installed immediately downstream of the
installed shut-off valve to the dryer (as shown above). The dryer
must be disconnected from the gas supply piping system during
any pressure testing of the system at test pressures in excess of
1/2" psi (352 kg/m
).
2
tape. With propane gas,
®†
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