Forno Alta Qualita FRHWM5029-30HB Manuel D'instructions page 6

The minimum mounting height between range top
to hood bottom should be no less than 25"
The maximum mounting height should be no
higher than 30"
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 would lose their performance
and efficiency.
If available, also refer to the range manufacturer's
height clearance
recommended hood mounting height above
the range.
* Maximum ceiling clearance of 106.5" at
27.5" hood mounting height from stove (may
vary for different models)
** For a higher ceiling, a chimney extension and a
decorative cover is available to purchase, if
required.
Ductwork
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 ductwork only.
Fasten all connections with sheet metal screws and tape all joints with certified Silver Tape or Duct
Tape.
Duct Run Calculation:
Maximum run 6" or 3-1/4 x 10" duct
Deduct:
each 90 Elbow used
each 45 Elbow used
each 6" to 3/14 x 10"
transition used
each 3/14 x 10" to 6"
transition used
Side Wall Cap w/ damper
Roof Cap
e.g. – 1 roof cap, 2x90 elbows, 1x45 elbow
= 30' + 30' + 9'=69' used,
If turns or transitions are required: Install as far
away from opening and as far apart, between 2, as possible.
requirements and
100FT
15FT
9FT
1FT
5FT
30FT
30FT
Hood
Clearance between
hood and stove of
25"-30"
the
Stove
31' available for straight duct runs
DUCT SIZE
A minimum 6" round duct must be used to maintain
maximum airflow efficiency.
Flexible ducts are provided for convenience, always
use rigid type metal ducts if available to maximizing
airflow.
Also use calculation (on left) to determine total
available duct run when using elbows, transitions
and caps.
ALWAYS, when possible, reduce the number of
transitions and turns. If a long duct is required,
increase duct size from 6" to 7 or 8".
If a reducer is used, install a long reducer instead of
pancake reducer. Reduce duct size as far away
from the opening as possible.
6
Maximum ceiling
height 8 to 9 ft
(special order for
higher ceiling)
36"