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8NSTALLATION NSTRUOTgONS (continued)
Preparing the Countertop
Clearance between inside front of cabinet and rear of
countertop cutout must be 20%" in order to accommo-
date cooktop depth.
1-7/8"
MIN.
A 1/2" wide flat area is required around the edge of
opening for support of the unit. The cooktop unit must
be level and sit squarely into countertop opening.
Carefully cut countertop opening according to the
dimensions shown in the illustration. Be sure that
opening is cut squarely, with sides parallel to each
other and rear exactly perpendicular to side.
-20-5/8"
1-7!8"Min,
Preparing for Ductwork
NOTE: Ductwork MUST be vented to outside. DO
NOT vent into a wall, ceiling, crawlspace, attic or
any concealed space.
Cut hote in cabinet walt or floor as appropriate for your
installation. Make sure exhaust duct is located
between wall studs or floor joists.
Downward.].3/8,,J-_qVenting------€_.__, i _/16"
Rear Wall Venting
Blower to Ducb_vorkAaignrnent
In general, the use of flexible ducting is discouraged
because it can cause severely restricted airflow.
However, if the blower outlet and the floor or walt duct
location do NOT align well, then flexible METAL duct-
ing can be used to adapt to an offset. Good alignment
without use of flexible ducting is best.
NOTE:
o DO NOT EXCEED THE MAXIMUM RECOMMEND-
ED OFFSET OF 3".
o DO NOT ALLOW THE FLEXIBLE DUCTING TO
KINK OR COLLAPSE.
°DO STRETCH THE FLEXIBLE DUCTING AS
MUCH AS POSSIBLE TO ELIMINATE AS MUCH
OF THE CORRUGATION AS POSSIBLE.
o DO ROTATE BLOWER SLIGHTLY' TO MINIMIZE
OFF-SET (SEE STEP 6).
3" Max.
Centerlineto
_Jl Centerline
Offset
z44v7
Bottom Venting
BackVenting
Steps to Determine FHexible
Ducting's Equivalent Length
1. Measure the actual amount of offset (MAXIMUM 3"
RECOMMENDED). The effect upon airflow is
dependent upon the amount of offset.
2. Calculate the equivalent ducting allowances using:
(__ in. offset) x (14 Ft. per inch)
= _ Ft, equivalent length.
3. Enter the calculated value into TABLE 1 of this
installation instruction.
4. Ensure that the total equivalent length of ducting
does not exceed the maximum recommendation of
1O0 feet.
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