Minimum mount height between range top to
hood bottom should be no less than 24".
Maximum mount height should be no higher
than 32"
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 range manufacturer's
height clearance requirements and
recommended hood mounting height above
range.
A minimum of 6" round or 3-1/4 x 10"
rectangular duct must be used to maintain
maximum air flow efficiency.
Always use rigid type metal ducts only.
Flexible ducts could restrict air flow by up to
50%.
Also use calculation (on right) 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" to 7 or
8". If a reducer is used, install a long reducer
instead of a pancake reducer. 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 2, as possible.
INSTALLATION
1
MOUNT HEIGHTS & CLEARANCE
DUCTING
Min 24" - Max 32"
*Min 95.5"
**Max 121"
15.74"
36"
35.43-53.15"
*Minimum ceiling clearance 95.5" at 24" hood
mounting height.
**Maximum ceiling clearance 121" at 32" hood
mounting height.
Minimum Duct Size:
Round- 6" minimum
Rectangular- 3-1/4 x 10" minimum (requires a 6"
to 3-1/4x10" adaptor not supplied, order our
part #AK00019)
Duct Run Calculation:
Maximum run
6" or 3-1/4 x 10" duct
100 FT
15 FT
9 FT
1 FT
5 FT
30 FT
30 FT
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, 1 45 elbow used:
=30' + 30' + 9' =69' used, 31' available for
straight duct runs.
