GE JGP985 User Manual download pdf (Page 23)

PREPARE FOR DUCTWORK

NOTE: Ductwork MUST be vented outside. DO

NOT vent into a wall, ceiling, crawlspace, attic or

any concealed space.

Determine the best route for ductwork; it can be

routed in a variety of ways depending on the

kitchen layout.

IMPORTANT: The downdraft air discharge outlet

for this unit is 3-1/4″ x 10″ rectangular. Plan

ducting accordingly.

Typical duct arrangement countertop series.

Installation Instructions

BLOWER TO DUCTWORK

ALIGNMENT

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 wall duct

location do NOT align well, then flexible METAL

ducting can be used to adapt to an offset. Good

alignment without use of flexible ducting is best.

NOTE:

Do not exceed the maximum recommended

offset of 6″.

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.

A 3

⁄4″ x 10″ rectangle to 6″ round transition duct

is available at your local building supply store.

NOTE: Illustrations are for planning purposes only.

Inside wall

cabinet

Up inside wall to roof

or overhang

Directly to outside

Between floor joists Through cabinet toe space

Peninsula or island

Peninsula

Outside wall

cabinet

NOTE: PVC sewer pipe type PSM 12454-B

Schedule 40 ASTM D1785.

Wall Cap

Concrete

Slab

6″ (15 cm)

Dia. PVC

Sewer Pipe

6″ (15 cm)

Dia. Metal

Duct

Pack tightly with gravel

or sand completely

around pipe

3-1/4″ x 10″ Rectangular

to 6″ Round Transition

6″ (15 cm)

Dia. 90°

Metal Elbow

6″ (15 cm) Dia.

Metal Duct

16″

(40.6 cm)

Max.

12″

(30 cm)

Min.

6″

(15 cm)

Dia. PVC

Coupling

6″ (15 cm) Dia.

PVC Sewer Pipe

Elbow

6″ (15 cm) Dia.

PVC Sewer Pipe

Elbow

6″ (15 cm)

Dia. PVC

Sewer

Pipe

6″

(15 cm)

Dia.

PVC

Coupling

30′-0″ (9.14 m) Max.

Optional duct arrangement under concrete slab.

PVC duct should be used if installing under a

poured concrete slab.

PREPARATION

Back Venting

(Requires 3

⁄4″ x 10″)

Bottom Venting

6″ Max.

Centerline

to Centerline

Offset

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GE JGP985 User Manual Page 23

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