Venting Methods
Page 7
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This range hood is factory set for venting through the roof or wall. For non-vented (re-circulating) installa
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tions, see
Ductless Conversion
on Page 7.
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Vent work can terminate either through the roof or wall. To vent through a wall, a 90° elbow is needed.
IMPORTANT:
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NEVER exhaust air or terminate duct work into spaces between walls, crawl spaces, ceiling, attics or garages.
All exhaust must be ducted to the outside.
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Use metal/aluminum duct work only.
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Fasten all connections with sheet metal screws and tape all joints with certified Silver Tape or Duct Tape.
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Use caulking to seal exterior wall or roof opening around the cap.
Ductless Conversion
IMPORTANT:
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A minimum of 8” round duct (purchased separately) must be used to maintain maximum airflow efficiency.
•
Always use rigid type metal/aluminum ducts if available to maximize airflow when connecting to provided
duct.
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Please use
Duct Run Calculation
below to compute the total available duct run when using elbows, transitions
and caps.
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ALWAYS, when possible, reduce the number or transitions and turns. If long duct run is required, increase
duct size from 8” to 10” or 12”. If a reducer is used, install a long reducer instead of a pancake reducer. Re
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ducing duct size will restrict airflow and decrease airflow, thus reduce duct size as far away from opening as
possible.
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If turns or transitions are required: Install as far away from opening and as far apart, between 2, as possible.
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Minimum mount height between stove top to hood bottom should be no less than 28-inch*.
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Maximum mount height between stove top to hood bottom should be no higher than 36-inch*.
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It is important to install the hood at the proper mounting height. Hoods mounted too low could result in heat
damage and fire hazard; while hoods mounted too high will be hard to reach and will loose its performance
and efficiency.
•
If available, also refer to stove top manufacturer’s height clearance requirements and recommended hood
mounting height above range.
* Due to different ceiling height configurations, recommended height may not be applicable.
Minimum Duct Size:
•
Round - 8” minimum
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Option 2:
Side wall cap
Vertical roof venting
Roof cap
Horizontal wall venting
Option 1:
Page 6
Duct Run Calculation:
Recommended maximum run
8” duct size minimum
50 ft
Vent piece deduction
Each 90º elbow used
9 ft
Each 45º elbow used
5 ft
Each 8” transition used
7 ft
Side wall cap with damper
0 ft
Roof cap
0 ft
Duct Run Calcuation example:
One roof cap, two 90º elbow, and one 45º elbow used:
0ft + 9ft + 9ft + 5ft =
23ft used.
Deduct 23ft from 50ft,
27ft
maximum available for
straight duct run.
To calculate the length of the system you need, deduct the equivalent feet for each vent piece used in the system
from the recommended maximum duct run.
Calculating Vent System Length
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Ductless conversion is intended for applications where an exhaust duct work is not possible to be installed.
When converted, the hood functions as a purifying hood rather than an exhaust hood. Fumes and exhaust
from cooking is drawn and filtered by a set of charcoal filters. The air is then purified and re-circulated back
within the home.
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We recommend to ALWAYS exhaust air outside of the home by employing existing or installing new duct
work, if possible. Only when the exhaust option is not possible should you recourse to converting the hood
into a purifying unit.
•
When converted to be a “purifying” unit, a set of charcoal filters and an air-diverter are required in addition to
its standard aluminum filter set. Available at your local resellers. The standard aluminum filters are intended
to capture residue from cooking, the optional charcoal filters help to purify fumes exhausted from cooking,
and the optional air-diverter redirects filtered clean air back to the house.
