Selecting a Ventilation System
6
INTERNAL, IN-LINE OR REMOTE BLOWER
With the exception of some cooktop low-profile hoods
and some downdrafts, Wolf ventilation products are
shipped without the blower assembly. An internal, in-line
or remote blower must be selected to accommodate the
Wolf cooking appliance.
The blower will vary in size, which is dictated by the
cooking surface, the volume of air that needs to be moved
and the length of the duct run.
RECIRCULATING VENTILATION
Recirculating ventilation units are installed on top of a
ventilation hood with no ductwork required. Recirculating
units recycle the air through a charcoal filter and return it
to the kitchen. Wolf recirculating units are for use with
cooktop low-profile hoods with an internal blower and
some pro wall hood models. Recirculating units should
not be used with ranges or rangetops that contain a char-
broiler or griddle. Refer to specifications for recirculating
ventilation on pages 42–43.
IMPORTANT NOTE:
This type of ventilation will not remove
heat, moisture or combustion gases from the air. It will
also be less effective in reducing odors and smoke.
Selecting a Ventilation System
COOKING STYLE
The appropriate airflow capacity is determined by the
cooking space and cooking style. Greater exhaust
capacity is required to handle moisture generated by
boiling large pots of water or the grease and smoke from
grilling or frying. Cooking with high heat or cooking
aromatic foods may require additional CFM, and increas-
ing the capture area with a hood that exceeds the cooking
surface by 3"
(76)
on each side.
If the cooking surface is in an island or peninsula, a higher
airflow capacity hood can provide better capture for cross
currents, or if the hood needs to be mounted higher.
Downdraft ventilation systems are also a good alternative.
VENTILATION PERFORMANCE
Ventilation performance is measured in cubic feet per
minute, or CFM. The higher the CFM, the greater the
amount of air that is evacuated through the ventilation
system. CFM are based on the cooking appliance output.
Wolf suggests 1 CFM per 100 Btu
(.03 kW)
.
The chart on page 10 provides CFM for all Wolf cooking
appliances.
