Ancona IGCP430 User Manual And Installation Instructions page 11

IMPORTANT:
A minimum of 6 in. (15.3 cm) round or 3-1/4 × 10 in. (8.3
cm × 25.4 cm) rectangular duct must be used to maintain
maximum airflow efficiency.
total available duct run when using elbows, transitions
and caps.
transitions and turns. If long duct run is required,
cm) or 8 in. (20.3 cm). If a reducer is used, install a
long reducer instead of a pancake reducer. Reducing
from opening and as far apart, between two (2), as
possible.
bottom should be no less than 24-inch (61 cm) for
This range hood is factory set for venting through the roof or wall.
IMPORTANT:
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.
Use metal/aluminum duct work only.
Fasten all connections with sheet metal screws and tape all joints with certi ed Silver Tape or Duct Tape.
Use caulking to seal exterior wall or roof opening around the cap.
TOP VENTING
ROOF EXHAUST
Installation
electric cook tops and minimum of 30-inch (76.2 cm)
for gas stove tops and no higher than 30-inch (76.2 cm)
for electric cook tops.
height. Hoods mounted too low could result in heat
may be hard to reach and will lose its performance and
efficiency.
height clearance requirements and recommended
hood mounting height above range.
TOP VENTING
WALL EXHAUST
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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.
REAR VENTING