Ventilation Hood User Manual

www.desatech.com
118197-01C14
5. Place the ashing over the pipe section(s)
extendingthroughtheroof.Securethebaseof
theashingtotheroofandframingwithroof-
ingnails.Besureroongmaterialoverlapsthe
topedgeoftheashingasshowninFigure19,
page13.Theremustbea1"clearancefrom
theventpipetocombustiblematerials.
6. Continuetoaddpipesectionsuntiltheheight
oftheventcapmeetstheminimumbuilding
coderequirementsdescribed inFigure7on
page6.Note:Youmustincreaseventheight
forsteeproofpitches.Nearbytrees,adjoining
rooines,steeppitchedroofsandothersimilar
factorsmaycausepoordraftordown-drafting
inhighwinds.Increasingtheventheightmay
solvethisproblem.
7. Twist-locktheventcapontothelastsection
ofventpipe.
Note:Iftheventpipepassesthroughanyoccupied
areasabovetherstoor,includingstoragespaces
and closets, you must enclose pipe. You may
frameandsheetrocktheenclosurewithstandard
construction material. Make sure and meet the
minimumallowableclearancestocombustibles.
Do not ll any of the required air spaces with
insulation.
VENTINg INSTALLATION
INSTRUCTIONS
Continued

Figures21 through24 showfour differentcon-
gurationsforverticaltermination.



1


2

5' min. 2' max.
6' min. 4' max.
7' min. 6' max.
8' min. 8' max.
20' max. 8' max.
Figure 21 - Vertical Venting
Conguration Using Two 90° Elbows
with Two Horizontal Runs (Vertical
Round High Wind Termination Shown)
Note: Install restrictor
into inner collar of
replace as shown.
45° Elbow

 
5' min. 2' max.
6' min. 4' max.
7' min. 6' max.
8' min. 8' max.
20' max. 8' max.
Figure 22 - Vertical Venting
Conguration Using One 90° Elbow
(Vertical Round High Wind Termination
Shown)
45° Elbow
Note: Install restrictor into
inner collar of replace as
shown.