Heatilator A36C - Roof Penetration; Install Chase;Chase Top

Heatilator • A36/42C, A36/42CH • Installers Manual • 4017-262 • Rev D • 10/07/13
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Figure 5.8 Ceiling/Attic Construction
Install Flashing
• Assemblechimneysoitpassesthroughtheframed
opening.
• Sliptheashingoverthechimney.
NOTICE: Roongshinglesmustbebelowtheashing
plate on the lower side of a sloped roof and over the
ashingplateonthesidesandtop.
• Nailtheashingtotheroof.Keepgapsbetweenthe
ashingplateandtherooftoaminimum.
• Caulktheashingplateandroofjunctionaswellas
theverticalseamontheashing.Allnailheadsmust
becaulkedwitharoongsealant.
• Caulktheoverlapseamofanyexposedpipesections
thatarelocatedabovetherooflinetopreventleaks.
Slope Downward
(1/4 in. per foot
minimum)
Turn-down
Drip Edge
Chase
2 in. (51 mm) Collar
on Chase Top
.018 (26 ga) min.
Galvanized
Chase Top
Figure 5.9 Chase Top Construction
G. Install Chase/Chase Top
• YouMUSTuseachasetopinachaseinstallation.
ChasetopsareavailablefromyourHeatilatordealer
ormaybeeldconstructed.
• Includeaturndownanddripedgetopreventwater
fromseepingintothechase.
• Includea 2 in.(51 mm) soldered,welded or spun
collararoundpipeopeningtokeepwaterout.
• Providea1/8in.(3mm)gaparoundtheuepipe.
• Slope the chase top downward away from the
opening.
WARNING! Risk of Fire! DO NOT caulk the pipe to the
chase top collar.
• Caulkallseamstopreventleaks.
F. Roof Penetration
• RefertoFigure5.8.
• Plumbfromrooftocenterofchimney.
• Driveanailupthroughrooftomarkcenterofpipe.
• Measuretoeithersideofnailandmarkthe14-1/2in.x
14-1/2in.(368mmx368mm)openingrequired.
• Measureopeningonthehorizontal;actuallengthmay
belargerdependingonroofpitch.
• Cutoutandframeopening.
• RefertoChapter 25oftheUniform Building Codefor
roofframingdetails.