Vent-a-Hood SLH6-K User Manual

Read and Save These Instructions

All Hoods Must Be Installed By A Qualified Installer

INSTALLATION INSTRUCTIONS

SLH6-K UNDER CABINET HOOD

Read All Instructions Thoroughly Before Beginning Installation

WARNING - TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK,

OR INJURY TO PERSONS, OBSERVE THE FOLLOWING:

A. Installation work and electrical wiring must be done by qualified

person(s) in accordance with all applicable codes and standards,
including fire-rated construction. Switch power off at service panel
and lock the service disconnecting means to prevent power from
being switched on accidentally during installation.

B. When cutting or drilling into wall or ceiling, do not damage

electrical wiring and other hidden utilities.

C. Ducted fans must always be vented to the outdoors.

D. 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 for Heating, Refrigeration and Air
Conditioning Engineers (ASHRAE), and local code authorities.

WARNING - TO REDUCE THE RISK OF FIRE, USE ONLY METAL

DUCTWORK

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L114A

(Rev. 04/08)

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Ducting Do’s and Don’ts

NEVER restrict the duct size. The K250 blower unit requires 7” round duct or equivalent (32.5
square inches). Using Vent-A-Hood transitions (back page) will ensure proper efficiency.

Blower Duct Size Sq. Inch Area
K250 3 1/4” x 10” rectangular or equivalent 32.5”

Do not use flexible or corrugated duct. This type of duct will restrict airflow and reduce
performance. Only use smooth, galvanized, metal duct. Observe local codes regarding special
duct requirements and placement of duct against combustibles. Make the duct run as short and
as straight as possible with as few turns as possible. Avoid sharp-angled turns. Instead, use
smooth, gradual turns such as adjustable elbows or 45 degree angled turns. For duct runs over
20 feet, increase the duct diameter by one inch for every ten feet of duct. A 90 degree elbow is
equal to 5 feet of duct. Using Vent-A-Hood roof jacks or wall louvers (back page) will ensure
proper efficiency. Airflow must not be restricted at the end of the duct run. Do not use screen
wire or spring-loaded doors on wall louvers or roof jacks. Do not terminate venting into an attic
or chimney. Where possible, seal joints with duct tape. The hood must be ducted to the outdoors
without restrictions.

YES

NO

Smooth Duct

Flexible Duct

Smooth Gradual Turn

Sharp Angled Turns

L114A

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(Rev. 04/08)