MOUNTINGHEIGHTS
Minimum mounting height between range top
to hoodbottom shouM be no tessthan 24".
12 _'
\
1_
Min 24"-Max 32"
36"
Maximum mounting height shouM be no
higher than 32".
rt is important to instarl the hoodat the
proper mounting height. Hoodsmounted too
row courd result in heat damageand fire
hazard; while hoods mounted too high will be
hard to reach and will rooseperformance
and efficiency.
rf availabb, arso refer to range manufacturer's
height clearance requirements and recom-
mended hood mounting height above range.
DUCTING
A minimum of 8" round duct must be used to
maintain maximum air flow efficiency.
Alwaysuserigidtypemetalductsonly,
Flexibleductscouldrestrictair flowbyupto 50%.
Also use calculation (on right) to compute total
available duct run when using elbows, transitions
and caps.
ALWAYS,when possible, reduce the number of
transitions and turns. If long duct run is required,
increase duct size from 8" to 9" or 10". If a reduc-
er is used, install a long reducer insteadof a pan-
cake reducer. Reduceduct 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.
Duct Run Calculation:
Maximum run
8" 100 FT
CalculatedLength:
each 90 Elbowused 15 FT
each 45 elbowused 9 FT
each 8"
transition used 1 FT
each 3/14 x 10" to 8"
transition used 5 FT
SideWall Capw/damper 30 FT
RoofCap 30 FT
e,g,- 1 roof cap, 2x90 elbows, 1 x 45 elbow used;
=30' + 30' + 9' =69' used, 31' available for stroiqht duct runs,
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