2-24
Installation InformationCT Hoods and DD Ventilation
TO REDUCE THE RISK OF FIRE AND ELECTRIC SHOCK, THIS VENTILATION HOOD SHOULD ONLY BE
INSTALLED WITH BLOWERS MANUFACTURED BY WOLF APPLIANCE INC. AND SPECIFIED FOR USE WITH
THESE VENTILATION MODELS.
DOWNDRAFT BLOWER AND DUCTING CONSIDERATIONS
TO REDUCE THE RISK OF FIRE, USE ONLY METAL DUCTWORK.
BLOWER CONSIDERATIONS
The blower will vary in size and is dictated by
the cooking surface, the volume of air that needs
to be moved and the length of the duct run. A
straight, short duct run with a limited number of
elbows and transitions will allow the downdraft to
perform most effi ciently.
A remote-mounted blower will minimize the
amount of blower noise, but will not eliminate the
noise completely.
NOTE: Blower options vary with the cooking
surface. For recommendations, refer to the Wolf
Design Guide found on the Wolf website, www.
wolfappliance.com.
DUCTING CONSIDERATIONS
NOTE: Always consult a qualifi ed HVAC Engi-
neer for specifi c ducting applications.
NOTE: Wolf ventilation downdraft systems must
be vented to the outside. Use only rigid metal
ductwork.
Wolf downdraft ventilation systems are designed
for use with 3-1/4”(83) x 10” (254) ductwork for
Models DD30I, DD36I and DD45I, and 3-1/4”(83)
x 14” (356) ductwork for Models DD30R, DD36R
and DD45R. Each can be transitioned to 8” (203)
or 10” (254) round ductwork.
For best performance, 10” (254) round ductwork
is recommended. The downdraft will operate
most effi ciently when the ductwork does not ex-
ceed 40’ (12 m) in equivalent duct length.
Choose the ducting option that allows the short-
est length of ductwork and a minimum number of
elbows and transitions. Check the location of fl oor
joists, wall studs, electrical wiring or plumbing for possible interference with the ductwork.
NOTE: Use duct tape to seal the connection between the blower outlet and ductwork. Support the weight of the duct-
work is necessary to ensure sealed joints.
ADJUSTABLE DISCHARGE
Wolf downdraft systems have an adjustable discharge that will allow you to negotiate ducting around fl oor joists and
other obstacles. Three different discharge locations are available with side-to-side adjustment for accurate alignment
of ductwork. (See Figure 2-46)
Figure 2-46 Top View Installation Dimensions
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