Installation Guide

INSTALLATION

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.

b) 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 the local code authorities.

c) When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden

utilities.

d) Ducted fans must always be vented to the outdoors.

TO REDUCE THE RISK OF FIRE, USE ONLY METAL DUCTWORK.

TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT USE THIS BLOWER WITH

ANY SOLID-STATE SPEED CONTROL DEVICE.

INSTALLATION DETAILS

1. Read all instructions thoroughly before beginning installation. Note: These instructions apply

to standard hood inserts only. Custom hood inserts may require additional specification

consideration.

• Back Venting: If venting out the wall behind the vent instead of venting through the ceiling, see

“Back Venting” on page 14 for particulars.

2. When installing a Hestan hood insert, it is recommended that the bottom edge of the insert be

located no more than 30” above the cooking surface for optimum performance.

3. Install the duct(s) from the outside of the house down to the location

of the exhaust outlet(s) on the top of the liner, allowing room for the

optional transitions, if used.

If back venting, the elbows should be installed so that the non-crimped

end(s) are on the inside of the collar(s) of the exhaust outlet(s).

If a transition is used, install the duct so it will engage 1” of the

transition outlet.

Consult the connection diagrams (following) for further details on

exhaust outlet placement.

Use foil HVAC tape (not gray cloth duct tape) to seal all joints. A

complete listing of suggested ducting materials is provided on the back

page of this instruction sheet.

TRANSITION HEIGHTS:

Dual Blower (WM2L, 600 CFM): no transition - 8” round duct will

connect directly to the top of the hood.

Cabinet with

vent liner

30”

[76.2 cm]

36”

[91.4 cm]