Before You Begin; Ducting; External Venting Requirements - Sirius Range Hoods SU900 Installation Instructions Manual

The manufacturer declines all responsi-
bility in the event of failure to observe the
instructions given here for installation,
maintenance and suitable operation of
the product. The manufacturer further
declines all responsibility for injury due
to negligence and the warranty of the
unit automatically expires due to impro-
per maintenance and/or installation.
(Not applicable if the range hood is used
in re-circulating mode).
WARNING: Do not vent this appliance
into any other ductwork, spaces between
walls, ceilings, attics, garages or any
other confined space.

External Venting Requirements.

When planning new ductwork, always
look for the most direct route to the ou-
tside. Venting can be done through the
roof or directly through the back outside
wall. (See Figure 1 and 2) Only use ri-
gid type metal ducting (plastic ducting is
generally not permitted by code). Flexi-
ble ducting could restrict airflow by up
to 50%.
fig. 1
4
B E FOR E Y OU BEG I N
D UC TI NG
BEFORE YOU BEGIN: It is advisable to test
run the range hood before installation.
BEFORE STARTING – please read this en-
tire document and ensure you are fully
conversant with the require-ments and
limitations. These units weigh approxi-
mately 125lbs and therefore require a
minimum of two people to install.
Always fasten connections with sheet
metal screws and tape all joints with
certified Silver Tape or Duct Tape. Do
not use screws to fasten ductwork to the
hood, only use tape as the screws will
stop the dampers from opening and your
hood will not work. This hood re-quires
a 6" round duct outlet. You can increase
the duct size of the duct run but never
decrease it. Use the shortest and most
direct route possible. Always, wherever
possible, reduce the number of transi-
tions and turns with as few sharp angles
as possible. Two staggered 45 degree
angles are better than one 90 degree.
Make these turns as far away from the
motor exhaust as possible, with as much
space between each bend.
fig. 2