INSTALLATION
MOUNT HEIGHTS & CLEARANCE
DUCTING
30" - 45"
* min. 90"
** max. 113"
36"
10-3/4"
min. 28" - max. 36"
Minimum mount height between range top to
hood bottom should be no less than
28".
Maximum mount height should be no higher
than
36".
It is important to install the hood at the
proper mounting height. Hoods mounted too
low could result in heat damage and fire haz-
ard; 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 recom-
mended 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 pan-
cake 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.
-INIMUM
CEILINGCLEARANCE
vAT
v HOOD
MOUNTING
HEIGHT
-AXIMUM
CEILING
CLEARANCE
AT
HOOD MOUNTING
HEIGHT
Minimum Duct Size:
Round- 6" minimum
Rectangular- 3-1/4 x 10” minimum (requires a 6”
to 3-1/4 x 10” ada
SWHU
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"
each 3/14 x 10" to 6"
transition used
Side Wall Cap w/ damper
Roof Cap
100 FT
15 FT
9 FT
1 FT
5 FT
30 FT
30 FT
EGROOFCAP XELBOWS ELBOWUSED
ggggUSED gAVAILABLEFORSTRAIGHTDUCTRUNS
Model: ZSA-M90S Page 1
