Jenn-Air JXT8042ADS User Manual download pdf (Page 4)

INSTALLATION

MOUNTING HEIGHTS & CLEARANCE

DUCTING

28.94"-46.65"

5.31"

36"

Min 24"-Max 32"

*Min 88.94"

*Max 114.65"

Minimum mounting height between range top to

hood bottom should be no less than 24".

Maximum mounting 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 lose performance and efficiency.

If available, also refer to range manufacturer's

height clearance requirements and recommend-

ed hood mounting height above range.

Extension kits available to accommodate

9’-12’ ceilings.

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 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. Reduce duct size as far away from open-

ing as possible.

If turns or transitions are required:

Install as far away from opening and as far

apart, between 2, as possible.

*Minimum ceiling clearance 88.94” at 24” hood

mounting height.

**Maximum ceiling clearance 114.65" at 32"

hood mounting height.

Minimum Duct Size:

Round- 6" minimum

Rectangular-requires an adaptor readily available

at most hardware stores.

Duct Run Calculation:

Maximum run

6" or 3-1/4” x 10" duct

Calculated Length:

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

100 FT

15 FT

9 FT

1 FT

5 FT

30 FT

e.g.- 1 roof cap, 2x90 elbows, 1 45 elbow used:

=30' + 30' + 9' =69' used, 31' available for straight duct runs.

1 2 3 4 5 6 7 8 9 ... 23 24

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Jenn-Air JXT8042ADS User Manual Page 4

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