Hi-Velocity HE Series, Руководство по установке

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MIN.
6” or
152mm
BEND
RADIUS (7”
or 178mm
for HE)
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After the all the Branch Take-Offs have been installed,
the flexible duct can then be fastened to the joist with
strapping material. Staples may be used, as long as the
insulation sleeve isn’t damaged or torn.
Only use staples if local code allows . If the
insulation sleeve is damaged use foil duct tape to seal
the sleeve, do not use cloth style tapes as they will not
create a proper seal. Try to run the flexible duct parallel
to the joists whenever possible as this takes less space
(Fig. 14) .
Fig. 14 - Use strapping to hold the Flexible duct
Fig. 15 - Through or under joists
When larger holes (4”/
102mm
) can be drilled, then the
insulated flex duct may be pulled through whole. If code
or the designer only allow for a 2 ¼”
(57mm)
or 3”
(76mm)
hole, the insulation must first be removed from the flexible
duct
(Fig. 16a)
. The insulation is then cut into lengths that
correspond to the joist spacing. As the inner soft core of
the flexible duct is fed into each hole the insulation is slid
over the core
(Fig. 16b)
.
Fig. 16a - 2
1
⁄
4
” holes
(57mm)
Fig. 16b - Add insulation at each joist
When installing the flexible duct in areas in which
you must run opposite to the direction of solid joists,
some drilling may be required. It is recommended
to drill the smallest hole possible (Fig. 15) in order
to maintain structural integrity. Check with local code
laws and ensure that it is allowable to drill holes
through the joists before proceeding. If possible, run
the flex duct under the joists and avoid drilling any
holes.
The flexible duct should never be cut shorter than 10’
(3.05m)
in length. If the run to the outlet is less than 10’
(3.05m)
the flexible duct can be coiled up. The bends in the
flexible duct shall have a minimum radius of 6” or 152mm
(7” or 178mm for HE Duct) (Fig. 17) . Sharp bends in the
Flexible Duct will reduce airflow to that vent.
Fig. 17 - 6”
(152mm)
minimum radius on bends
If a T-Bar ceiling is going to be installed, it is far easier
to run the flexible duct in that space, rather than drilling
through several joists.
Module DUC
Installing Plenum and Branch Duct (5/9)
Module DUC Installing Plenum and Branch Duct (5/9)
Flexible Duct Placement