MOUNTINGHEIGHTS
96"
Minimum mounting height between rangetop
to hood bottomshouMbenotess than 24".
Maximum mounting height shourdbe no
higher than 32".
rt is important to instarlthe hoodat the
proper mounting height. Hoodsmounted too
row couM result in heat damageand fire
hazard; while hoods mounted too high will be
hard to reach and will rooseperformance
and efficiency.
ff available, arso refer to range manufacturer's
height clearance requirements and recom-
mended hoodmounting height above range.
DUCTING
A minimum of 6" roundor 3-1/4" x lO"rectangurar
duct must be usedto maintain maximum air flow
efficiency.
Alwaysuserigidtypemetalductsonly,
Flexibleductscouldrestrictair flowbyupto 50%.
Also use calculation (on right) to compute total
availableduct run when using elbows, transitions
andcaps.
ALWAYS,when possible, reducethe number of
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.Reduceduct size as far away from open°
ing as possible.
If turns or transitions are required:
Install as far away from opening and asfar
apart, between 2, as possible.
Duct RunCalculation:
Maxirnulnrun
6" or 3-1/4' x 10" duct
100FT
Deduct:
each90 Elbowused 15 FT
each45 elbow used 9 FT
each6" to "Y14x 10"
transition used 1 FT
each3/14 x 10" to 6"
transition used 5 FT
SideWallCapw/damper 30 FT
RoofCap 30 FT
e,g,- 1 roof cap, 2x90 elbows, t x 45 elbow used;
=30' + 30' + 9' =69' used, 31' available for stroiqht duct runs,