Kitchenaid KPEC992M User Manual download pdf (Page 2)

Venting

requirements

Maximum length of

vent system

Determine the length of

vent system you need

WARNING — TO REDUCE THE

RISK OF FIRE, ELECTRIC SHOCK,

OR INJURY TO PERSONS,

OBSERVE THE FOLLOWING:

Installation work and electrical

wiring must be done by qualified

person(s) in accordance with all

applicable Codes and Standards,

including Fire Rated Construction.

Sufficient air is needed for proper

combustion and exhausting of

gases through the flue (chimney)

of fuel burning equipment to

prevent back drafting. Follow the

heating equipment

manufacturer’s guideline and

safety standards such as those

published by the National Fire

Protection Association (NFPA),

and the American Society of

Heating Refrigeration and Air

Conditioning Engineers

(ASHRAE), and the local code

authorities.

When cutting or drilling into wall

or ceiling, do not damage

electrical wiring and other hidden

utilities.

Ducted fans must always be

vented to the outdoors.

WARNING — To reduce the risk of

fire, use only metal ductwork.

This unit must be grounded.

C.The blower motor must be

connected to the vent system wiring as

described in the vent system

instructions for connecting the exterior

blower motor wiring. Flexible armored

or nonmetallic cable must be used. A

1/2" (12.7 cm) U.L./CSA-listed strain

relief must be provided at each end of

the power supply cable.

Wire sizes must conform to the

requirements of the National Electrical

Code ANSI/NFPA 70 — latest edition*

or Canadian Electrical Code, C22.1

and C22.2 No. 113-M1984 (or latest

edition),** and all local codes and

ordinances. 14 gauge wire (minimum)

is recommended.

Copies of standards listed may be

obtained from:

* National Fire Protection Association

One Batterymarch Park

Quincy, Massachusetts 02269

** CSA International

8501 East Pleasant Valley Road

Cleveland, Ohio 44131-5575

90° elbow =

5 ft. (1.5 m)

1 ft. round =

1 ft. (0.3 m)

45° elbow =

2.5 ft. (0.8 m)

Recommended standard

10" (25.4 cm) fittings

Determine which venting method is best

for your application. Vent system can

extend either through the wall or the

roof.

Locate the exterior blower so that the

length of the vent system and the

number of elbows is kept to a minimum

to provide efficient performance. Where

possible, exterior blower should be

centered between wall studs or roof

rafters. The size of the vent system

should be uniform. Do not install two

elbows together. Use duct tape to seal

all joints in the vent system. Use

caulking to seal exterior wall or floor

opening around the cap.

Make sure there is proper clearance

within the wall or ceiling for exhaust vent

before making cutouts. Avoid pipes,

wires, or other vent systems that may be

running through the wall. Do not cut a

joist or stud unless absolutely necessary.

If a joist or stud must be cut, then a

supporting frame must be constructed.

For use with KIRD series retractable

Downdraft models:

• The plastic vent collar shipped in

carton attaches to the front of the

downdraft vent system plenum so

that the 10" (25.4 cm) round vent can

be attached to the downdraft vent

system.

For use with KHLU series Hood Liner

models:

• Discard plastic vent collar shipped in

carton.

Make sure that there is enough space

for any vent transitions that may be

needed between the exterior blower and

the connecting vent system.

For optimum performance, locate any

necessary vent transitions nearest to

the vent system that will be used with

this power system.

This exterior blower requires a separate

U.L./CSA approved wiring cable that

should be installed at the same time the

vent system is being installed.

Vent Length

10" (25.4 cm) round 55 ft. (16.8 m)

Vent length is given as a general

reference only. For a longer vent run, or

smaller vent system, contact a qualified

and trained vent installer. Check with local

codes for makeup air requirements, if any.

It is recommended that you use round

vent instead of rectangular vent,

especially if elbows are required. If

rectangular vent is required, if should be

transitioned to 10" (25.4 cm) round vent

as soon as possible.

For best performance, use no more

than three 90° elbows. If more than one

elbow is used, make sure that there is

a minimum of 24 inches (61 cm) of

straight vent between any two elbows.

Do not install two elbows together.

To calculate the length of system you

need, add the equivalent feet (meters)

from chart below for each vent piece

that will be needed.

Page 2

Install this side of the fan facing an

unoccupied space.

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Kitchenaid KPEC992M User Manual Page 2

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