Ancona IGCC630 User's Manual & Installation Instructions page 11

IMPORTANT:
• A minimum of 6 in. (15.3 cm) round or 3-1/4 x 10 in. (25.4
cm x 8.3 cm) rectangular duct 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.
• Please use Duct Run Calculation below to compute
total available duct run when using elbows, transitions
and caps.
• ALWAYS, when possible, reduce the number or
transitions and turns. If long duct run is required,
increase duct size from 6 in. (15.3 cm) to 7 in. (17.7
cm) or 8 in. (20.3 cm). If a reducer is used, install a
long reducer instead of a pancake reducer. Reducing
duct size will restrict airflow and decrease airflow, thus
reduce duct size as far away from opening as possible.
• If turns or transitions are required, install as far away
from opening and as far apart, between two (2), as
possible.
• Minimum mount height between stove top to hood
bottom should be no less than 24-inch (61 cm) for
• This range hood is factory set for venting through the roof or wall.
• Vent work can terminate either through the roof or wall. To vent through a wall, a 90° elbow is needed.
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 certified Silver Tape or Duct Tape.
• Use caulking to seal exterior wall or roof opening around the cap.
TOP VENTING ROOF EXHAUST
Roof cap
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.
• 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 may be hard to reach and will lose its
performance and efficiency.
• If available, also refer to stove top manufacturer's
height clearance requirements and recommended
hood mounting height above range.
Side wall cap
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TOP VENTING WALL EXHAUST