by
B A T H O L O G Y
19
Duct Installation
A t m o s p h e r i c 320
After desired length is determined, cut
completely around the through duct with
multipurpose tool. Fold back outer cover and
insulation. Apply mastic over fitting and / or
inside the inner liner (see figure 2 and 3 on
page 18).
Slide at least 1” of inner liner over fitting. Seal
inner lining to collar. Secure connection with tie
placed over the inner lining.
Pull outer cover and insulation back over inner
lining. Secure connection with tie placed over
the outer cover and insulation.
1.
2.
3.
Note: Do not use “outdoors” or install where duct
can be exposed to direct sunlight. Prolonged
exposure may cause degradation of vapor barrier.
Note: Do not install where duct can be exposed to
UV radiation from bio-treatment lamps within the
HVAC system. Exposure may cause degradation of
the inner core.
Note: Not not exceed published pressure or
temperature limits.
Note: Do not use duct to hang or support any
diffuser, register, or other equipment during
installation.
Note: Do not use screws or barbed fitting to make
connections on ducts with plain ends.
Note: Duct should be supported at 5’ maximum
intervals unless resting on ceiling joists or truss
supports. 1/2” sag per foot of support spacing is
permissible. Vertically installed duct shall be
stablized by support straps at a maximum of 6’ on
center.
Note: Do not use on oval collars for medium or
high pressure.
Warning: Insulated flexible duct contains fiber glass
wool which has been classified as a possible cancer
hazard by inhalation. Fiber glass wool may cause
temporary irritation to skin, eyes, and respiratory
tract.
Note: Use a poperly fitted NIOSH or MSHA
approved dust/mist respirator.
Note: Avoid breathing fiber glass duct.
Note: Avoid contact with skin and eyes.
Note: Wear long-sleeved, loose fitting clothing,
gloves and eye protection.
Note: Wash with soap and warm water after
handling.
Note: Wash work clothes separately and rinse
washer thoroughly.
Note: All tapes, mastics, and non-metallic fasteners
used for field installation of flexible ducts shall be
listed and labeled to Standard UL-181-B - Closure
Systems for use with Flexible Air Ducts and Air
Connectors. Non-metallic fasteners are limited to
6” w.g. maximum positive pressure.
Note: It is recommended a minimum 8’ of
insulated flexible ducting be used between any
expansion vent and fan for low noise level.
Note: A multipurpose tool is recommended for duct
installation.
Note: Follow all applicable codes and standards.
Installation Considerations
Installation
900-0513-0713
B A T H O L O G Y
r e d i s c o v e r b a t h i n g
A division of Bathing Brands, Inc.
www.Bathology.com 847-465-1070
