English 9
PLAN THE INSTALLATION
Note: The manufacturer is not responsible for performance
complaints attributable to the duct section.
•
The device achieves its optimum performance by means of a
possible.
•
there is a large number of duct bends or diameters less than 6”
•
non-combustible material.
•
Seal the connection points of the ducts appropriately.
•
unless the available ‘Non-duct Recirculation Kit’ is used.
Select ducting option
The 5 basic discharge connections, left, right, rear, front and
recirculation can be achieved through A to F with the optional
parts listed.
1. The downdraft blower system is designed for use with
connections are available - A to F, below:
2. For best performance: Choose the ducting option which allows
the shortest length of ductwork and a minimum number of
studs, electrical wiring or plumbing for possible interference.
A
B
C
D
E
F
Ductwork Preparation
DUCTING RECOMMENDATIONS
Proper performance is dependent upon proper ducting.
Local building codes may require the use of make-up air
systems when using ducted ventilation systems greater
responsibility of the owner and the installer to determine if
installations.
DO NOT USE FLEXIBLE DUCT; it creates back pressure/
air turbulence and reduces performance.
the house.
COLD WEATHER installations should have an additional
backdraft damper installed to minimize backward cold air
of outside temperatures as part of the ductwork.
The damper should be on the cold air side of the thermal
break. The break should be as close as possible to where
the ducting enters the heated portion of the house.
MAKE-UP AIR: Local building codes may require the use of
make-up air systems when using ducted ventilation systems
CFM varies from locale to locale. It is the responsibility
of the owner and the installer to determine if additional
For safety reasons, ducting should vent directly outdoors
conjunction with a recirculation unit.
BOSCH
®
equivalent duct.
Plan cabinetry
For left / right exhaust:
required - depending on the type of cooking appliance.
For some applications, gas or electrical connections will
need to be moved or routed around downdraft unit.
For gas cooktop installations make sure that a minimum
2
toe-kick and cabinet base. Inadequate ventilation of the
operating the fan on higher speeds.
Note: A cooktop sealing kit must be purchased for gas
applications. The kit includes hole covers for the toe-kick
and cabinet base, as well a a trim seal for the cooktop.