Thermador An American Icon HMWB30 Manual Del Usuario página 6

Typical installation
The height from the countertop to the bottom of the hood is 30" to 36".
These hoods are not recommended to be used over indoor grills.
. Choose vent options
The hood is designed to be used for vertical discharge as shown below.
Note: see also Fig. 1-2-3 for Cabinet preparation.
Install a 1/2" conduit from the service panel long enough to reach the hood
once it is installed. Power supply must be rated for 120 VAC, 60Hz. 15 or 20A.
Examples of possible ducting
Ceiling
Transition
*Deflector
Blower
*Charcoal filters
Filter
30" to 36"
RECIRCULATING
* Optional accessory - Ductless recirculation kit
Round duct
Ceiling
Transition
Blower
Filter
* Charcoal filters
30" to 36"