Table of Contents
Advertisement
Advance
Planning
DUCT FiTTiNGS
1[!_e
this
ch_yt
to
co]_pHte
permissab]e
lengths
for
duct
rm_s
to
oHtdooys.
Note:
Do not exceed maximum penTfissable
equivalent lengths!
Naximum recommended
duct
length for these heeds: 150 feet
Flexible
ducting:
If flexible
metal
(h_cting
is used,
a]]
the
equivalent
{eet
;_]ues
in the
table
should
be
doubled.
The
flexible
metal
duct
should
be straight
m_d
smooth
and
extended
as milch
as
Do
NOT
use
flexible
plastic
ducting.
Note: Al_yhomeventilation system,suchasa
v@tilation hood,may im_terrupt the properflow of
combustionair andexhaustrequiredbyfireplaces,
gasfurnaces,gas water heatersand othernaturally
vented s?stems To minimizethe chanceof interruption
of suchnaturallyventedsystems,follow the heating
equipmentmanufacturer'sguidelinesandsafety
staMards suchasthose publishedby NFPA andASHRAE
_Hoods are supplied with a 10"
round transition. A locally
suppiied transition is required
for other sizes.
Note:
Outleton top of hoodis
8-1/8"x 8".
*Actual length of straight duct plus duct fitting
equivalent, Equivalent length of duct pieces
are based on actual tests conducted by GE
Evaluation Engineering and reflect require+
ments for good venting performance with
any ventilation
hood,
Total Duct Run
6
Advertisement
Table of Contents
