SolarAttic PCS1, User Manual

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SECTION 3 - INSTALLATION Page S3-28
ATTIC NOTES
1. The PCS1 can be located over adjoining garages as a further leak protection
measure.
2. When the PCS1 is located on one end of the attic, air flow can be extended
by using large flexible duct work attached to the PCS1. This would require a metal
plenum to be fashioned and attached to the PCS1. Flexible duct work would then be
attached to the plenum.
C A U T I O N : Care should be taken not to substantially increase the static
pressure the PCS1 is subjected to [increased resistance to airflow via small
ducts, etc.]. This would have the effect of decreasing air flow CFM and
diminishing heat transfer rates.
3. A PCS1 plenum and flexible duct kit is expected to be available in 1993.
4. When installing the PCS1 in the attic, do not Òbuild it inÓ so it cannot be
removed. While the PCS1 is relatively maintenance free, service may be required
and in rare instances the unit may have to be taken down from the attic.
5. An attic bypass loop can be fashioned for service purposes at the time of
installation and placed into the attic as a contingency. Such a bypass loop would be a
small piece of rigid pvc pipe with mating union sections for hooking directly up to
the flexible pvc line in the attic [serving as an attic bypass loop] should service and
disconnect of the PCS1 ever be required.
6. Vapor barriers are a concern in geographical areas subject to prolonged
freezing temperature. Water, in the form of vapor, escapes into the attic and
ÒfreezesÓ onto the interior of the roof where it can build up. When temperatures
warm up, this water can turn into a liquid state and fall into the attic insulation.
Eventually, a build up from the condensed water vapor can damage the ceiling area
by forming water stains. Good vapor barriers [usually plastic] help to prevent this
from occurring.