Wolf Appliance Company 811504 - Manual (Page 10)

Pro Wall Hood Installation 10
Install Ductwork
10" (254) round, rigid metal duct is recommended for pro
ventilation hoods.
A straight, short run is most effective and will ensure
proper operation. For best results, duct run should not
exceed 50' (15 m) . For runs exceeding 50' (15 m) , a higher
CFM blower may be required to maintain proper air flow
and performance. A remote blower installed on a short
duct run may increase the potential for noise.
Internal and in-line blowers require a roof or wall cap (not
provided). Connect ductwork to the cap and work back
towards the ventilation hood. Use sheet metal screws and
aluminum tape or high temperature duct tape to seal joints
between ductwork sections.
To reduce the risk of fire, use only metal ductwork.
All pro ventilation hoods include a backdraft damper in the
transition assembly. Local codes may require the use of an
additional backdraft and/or make-up air damper. Contact
your local HVAC professional for specific requirements.
Backdraft and make-up air dampers are available through
your authorized Wolf dealer. For local dealer information,
visit the find a showroom section of our website,
wolfappliance.com.