15
The outside end of main vent should have a sweep elbow directed
downward.
If main vent travels vertically through the roof, rather than through
wall, install a 180° sweep elbow on end of vent at least 610 mm
(2 ft.) above surface of roof.
The opening in wall or roof shall have a diameter 13 mm (1⁄2")
larger than vent diameter. Vent should be centred 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 l/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.
Unobstructed air openings are required for make up combustion
air. A static opening of 24 square inches (1 inch
2
per 1,000 BTU
of burner) is the minimum required for each dryer in operation.
A common opening may be used if the return air is distributed
equally to all dryers in operation.
Back-draft Damper Kit 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.
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.
If an Exhaust Hood Cannot be Used
Multiple Dryer Venting
DRYER VENTING REQUIREMENTS
30˚ max.
Air flow
* Minimum clearance above
any accumulation of
snow, ice, or debris such
as leaves
1.
Remove red cap from gas pipe.
2.
Connect gas supply to dryer. If the flexible gas hose has
10 mm (3/8") BSP thread, use the supplied conversion thread
adapter. Use pipe-joint compound resistant to the action of L.P.
gas for gas connections.
If necessary for service, open the toe panel. Use a putty knife
to press on the two toe panel locks located at the top of the
toe panel. Pull downward on the toe panel to open. Toe panel
is hinged at the bottom.
Make Gas Connection
DRYER GAS SUPPLY REQUIREMENTS
3.
Open the shut-off valve in the gas supply line.
4.
Test all connections by brushing on an approved, noncorrosive
leak-detection solution. Bubbles will show a leak. Correct any
leaks found.
