Ventilation Guide

6 | Wolf Customer Care 800.222.7820
SELECTING A VENTILATION SYSTEM
Selecting a Ventilation System
INTERNAL, IN-LINE, OR REMOTE BLOWER
All Wolf ventilation products are shipped without the blower
assembly. An internal, in-line, or remote blower must be
selected to accommodate the cooking appliance and venti-
lation product.
The blower will vary in size (CFM), which is dictated by the
cooking surface, the volume of air that needs to be moved,
and the length of the duct run.
Internal blowers are mounted inside the hood canopy or
blower box and provide the least disruption to the exterior
of the home.
In-line blowers are connected to the duct run between the
hood and the exterior of the home. This is a great option if
mounting the blower inside the hood or on the exterior of
the home is not desired or is not a viable option.
Remote blowers can be mounted on the roof or, in some
cases, on an exterior wall. A remote-mounted blower will
minimize the amount of blower noise but will not eliminate
the noise completely. If noise is a concern, a remote blower
is recommended.
Internal, in-line, and remote blowers are available for all
Wolf cooktop and pro ventilation products except the under-
cabinet hood inserts which offer only an internal blower
option.
DUCTING CONSIDERATIONS
IMPORTANT NOTE:
Unless used in a recirculating applica-
tion, Wolf ventilation hoods and downdrafts must be vented
to the outside. Use only rigid metal ducting.
Typically, wall-mounted ventilation hoods can be vertical
or horizontal discharge, while wall chimney hoods, island
hoods, hood liners, and outdoor wall hoods are vertical
discharge only. For some wall hoods, an accessory hori-
zontal discharge kit is required. In a horizontal discharge
application, additional framework may be needed to accom-
modate the remote blower. Wolf downdraft systems have an
adjustable discharge that will allow you to negotiate ducting
around oor joists and other obstacles.
Depending on the specic installation, ducting can run
through the roof, external wall, or eave. A remote blower can
not be ducted through an eave.
A straight, short duct run with a limited number of elbows
and transitions will allow the hood or downdraft to perform
most efciently. Wolf ventilation hoods will operate most
efciently when the duct run does not exceed 50' (15 m) in
length, 40' (12 m) for downdrafts. To calculate the total duct
length, refer to page 8.
ELECTRICAL REQUIREMENTS
All Wolf ventilation products require a separate grounded
electrical supply. Installation must comply with all applicable
electrical codes.
For all hoods except the outdoor wall hood, a ground fault
circuit interrupter (GFCI) is not recommended and may
cause interruption of operation. For the outdoor wall hood, a
ground fault circuit interrupter is required to reduce the risk
of electrical shock.