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IMPORTANT:
• A iniu of round or - rectangular duct (purchased separately) ust be used to
aintain aiu airflow efficiency
• Always use rigid type etalaluinu ducts if available to aiie airflow when connecting to
provided duct
• lease use Duct Run Calculation below to copute total available duct run when using elbows,
transitions and caps
• AWAS, when possible, reduce the nuber or transitions and turns If long duct run is reuired,
increase duct sie fro to or If a reducer is used, install a long reducer instead of a pancake
reducer Reducing duct sie will restrict airflow and decrease airflow, thus reduce duct sie as far
away fro opening as possible
• If turns or transitions are reuired, install as far away fro opening and as far apart, between two
(), as possible
• Miniu ount height between stove top to hood botto should be no less than -inch for
electric cook tops and iniu of -inch for gas stove tops and no higher than -inch for electric
cook tops
• It is iportant to install the hood at the proper ounting height Hoods ounted too low could result
in heat daage and fire haard while hoods ounted too high ay be hard to reach and will lose its
perforance and efficiency
• If available, also refer to stove top anufacturers height clearance reuireents and recoended
hood ounting height above range
CALCULATING VENT SYSTEM LENGTH:
To calculate the length of the syste you need, deduct the euivalent feet for each vent piece used in the
syste fro the recoended aiu duct run
Duct Run Calculation example:
One roof cap, two 90º elbows, and one 45º
elbow use
0ft + 9ft + 9ft + 5ft = 23ft used.
Deduct 23ft from 30ft, 7ft maximum
available for straight duct run.
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