25570 Rye Canyon Rd. Valencia, California 91355
(661) 294-7999 voice (661) 294-1115 fax
www.activethermal.com
There are installations in which there is a door or other obstruction in front of the
rack, making front exhaust impractical. The installer then has a choice of
exhausting hot air through the top or rear panels. (Top exhaust will move more
air than rear exhaust.) Vent kits for top exhaust (ATM part number 03-303-04)
and rear exhaust (ATM part number 03-303-03) are available through your
distributor or from ATM.
Additional tubing can be added to the top or rear panel exhaust kits if necessary,
although the amount of air moved will be reduced by the resistance to air flow
introduced by each additional foot of tubing. Tubing will also create a pathway
from the equipment rack to another area of the home or office. If this other area
is likely to exhibit temperature extremes, insects, odors, etc., these may travel
down the tube to the rack. A "one-way" valve, such as a check valve, may be
needed to prevent unpleasant surprises in the home theater! Avoid running
tubing to these areas, if possible. If needed, a suitable check valve (or "backdraft
damper") is available from Active Thermal Management (part number 03-103-
02).
IMPORTANT:
The use of a 2U or 3U vent panel near the bottom of the rack is highly
recommended. It is necessary to allow fresh air to enter (preferably at a
low level) if hot air is to be removed. If a door would block the vent panel,
vent slots, holes, etc., should be provided low on the sides of the rack
enclosure. A minimum opening of 8 square inches is recommended; 12 - 16
square inches is preferable.
Tubing sizes:
The top panel exhaust port uses ATM 4" tubing (4" ID, 6" OD), with 8'
(included) being the recommended maximum length.
Rear panel exhaust ports use ATM 2" tubing (thin wall), with 1 4'
length on each port (included) being the maximum recommended
length.
Preparation:
If exhausting through the front panel
, no preparation of the Cool-
stack II is needed. Proceed to step 1 of the installation section.
