Thermador HMIB42WS Installation instructions - Page 12

Venting Methods, For Non-Vented recirculating Installations

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Common Ducting Conigurations RECIRCULATING MODE VENTING THROUGH THE CEILING C B B A A A. 8" round transition B. 8" round duct system C. Recirculating kit NOTE: The igure does not represent all conigurations or installation methods. The image is to be used as a guide ONLY. Venting Methods This hood is factory set for venting through the roof (vertical discharge). A 8" (203 mm) round duct system is needed for installation (not included). NOTE: Flexible duct is not recommended. Flexible ductwork creates back pressure and air turbulence that greatly reduce performance. Vent system can terminate either through the roof. Always install a metal vent cover where the ductwork exits the house. For Non-Vented (recirculating) Installations If it is not possible to vent cooking fumes and vapors to the outside, the hood can be used in the non-vented (recirculating) version, using the recirculating kit . Fumes and vapors are recycled through the round grid. See optional accessories section. English | 12 | Installation Instructions

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Installation Instructions
English | 12 |
Common Ducting ConIgurations
RECIRCULATING MODE
VENTING THROUGH THE CEILING
A. 8” round transition
B. 8” round duct system
C. Recirculating kit
A
B
C
A
B
NOTE:
The Igure does not represent all conIgurations or installation methods. The image is to be used as a guide ON²Y.
Venting Methods
This hood is factory set for venting through the roof (vertical
discharge). A 8” (203 mm) round duct system is needed for
installation (not included).
NOTE:
Flexible duct is not recommended. Flexible
ductwork creates back pressure and air turbulence that
greatly reduce performance.
Vent system can terminate either through the roof.
Always install a metal vent cover where the ductwork exits
the house.
For Non-Vented (recirculating) Installations
If it is not possible to vent cooking fumes and vapors to
the outside, the hood can be used in the non-vented
(recirculating) version, using the recirculating kit . Fumes
and vapors are recycled through the round grid.
See optional accessories section.