Installation Manual
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 Hestan’s standard hoods only. Custom hoods may require additional consideration.
•  See “DUCTING DO’S AND DON’TS” on page10.
•  Weight and size: For safe installation, at least two people should be present to lift and hold the 
hood. For larger hoods and installations with duct covers, it is advisable to have a third person 
present to assist.
•  Back Venting: If venting out the wall behind the vent instead of venting through the ceiling, see 
“Back Venting” on page17 for particulars.
2.  When installing a wall mount range hood, it is recommended that the bottom edge of the hood 
be located no more than 30” above the cooking surface for optimum performance. 
3.  Select the appropriate installation method.
Method 1 is suitable for applications where the top of the hood 
(blower outlet(s) location) is accessible after the hood is mounted 
on the wall and when a Hestan duct cover will be used.
•  NOTE: Since Hestan duct covers can be opened for access, they 
can be installed with the hood and still permit access to connection 
points. The duct cover frame requires that the hood and duct cover be 
installed together.
Method 2 is suitable for applications where the top of the hood 
(blower outlet(s) location) is not accessible after the hood is 
mounted on the wall.
CAUTION
Make sure that once the hood is mounted the 
motor cooling vents are not obstructed.
4.  IF THE HOOD IS TO BE “BACK VENTED”, PROCEED DIRECTLY TO 
STEP 5.
Consult the connection diagrams (following) for further details on 
exhaust outlet placement.
Optional duct 
cover
18”
30”
36”
©2018 Hestan Commercial Corporation
11
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