Specifications

Page 6
Mechanical Conguration
The direction of air ow in the C-12 is determined by the mechanical conguration of the unit itself.
The parts involved in the mechanical conguration of the C-12 are:
• Top and bottom plates - The C-12 is always operated with both top and bottom plates in place.
The top plate is removed to facilitate installing the foam block or air lter behind the front panel.
• Cover plate - The cover plate (metal) is used to cover the top or bottom vents to force air
ow in the proper direction. One cover plate is supplied with the C-12, and it is not used in all
congurations (be sure to retain the cover plate and screws in a safe place when not in use).
• Fan assembly - The fans inside the C-12 are mounted on a movable carriage which allows them
to be positioned against either the top or bottom of the case. Fans are moved by loosening the
four large screws on the sides (two on each side), repositioning the fan assembly, and
re-tightening the screws.
• Filter and Foam Block - The C-12 is supplied with both a foam lter and a dense foam block,
both of which t behind the front panel vents. The lter is used when air ow through the front
panel is desired; the foam block is used to prevent air ow through the front panel when it is
not desired. Only one is used at once (be sure to retain the other in a safe place). To congure
these, remove the top plate and insert whichever one is required, against the front panel,
sliding it behind the long screws protruding from the bottom plate. Then replace the top plate
by inserting the front edge rst (tilt the plate and insert it so the long protruding screws “pin” the
lter or foam block against the front panel rather than impaling it).
• Rear plugs - The rear plugs are foam cylinders used to block the rear vents (2) when air ow
from the rear is not congured. These plugs are dense foam cylinders, and are inserted by
squeezing them and pressing them approximately halfway into the two holes in the rear panel
(a slight twisting motion will help).
• Rear exhaust hose - When air ow from the rear exhaust vents is congured, lengths of
“standard 1-1/2” pool skimmer hose” are inserted into the rear vents (after removing and
retaining the plugs). The hose should not include end ttings of any sort; the spiral hose should
be “screwed” directly into the rear panel about two turns.
Front Exhaust (bottom entry)
• Ensure that the lter (not the foam block) is installed behind the front grill
• Ensure that the cover plate covers the vents in the top plate
• Ensure that both rear plugs are rmly inserted
• Ensure that the fan assembly is in the lower position (against the bottom plate of the C-12)
Rear Exhaust (bottom entry)
• Ensure that the foam block (not the lter) is installed behind the front grill
• Ensure that the cover plate covers the vents in the top plate
• Ensure that both rear plugs are removed
• Ensure that exhaust hose is rmly inserted into the rear vents
• Ensure that the fan assembly is in the lower position (against the bottom plate of the C-12)
Note: The maximum air ow rate of the C-12 will be somewhat reduced with this option,
and will depend on the overall length of vent hose used. Using short hose runs, with as few
bends as possible, will help to maximize air ow and so maximize cooling.