U. With the LX220 OFF, restore the filter pump power and prepare to test the
PCS1 water flow as follows:
1. Someone should observe attic unit for any leaks during these tests.
2. Turn LX220 to ON
[manual override] and observe attic for any leaks
3. Shut down immediately by turning off pump or LX220 to OFFif
a. Fix any leak detected.
CAUTION: Absolutely do not accept any small leaks in the plumbing!Small
leaks only get worse. If you have allowed the silicone sealant and pvc cement to cure a full
24 hours before using these joints in the attic, there should be no leaks or problems in the
V. Complete the remaining installation issues such as cleaning up, etc.
This is a general attic processto follow when a small access opening is expanded.
You, as the installer, are responsible for the safe application and installation of the PCS1. Poor
workmanship inside the attic can lead to a mess.
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, airflow can be extended by using
large flexible ductwork attached to the PCS1. This would require a metal plenum to be fashioned
and attached to the PCS1. Flexible ductwork would then be attached to the plenum.
CAUTION: 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 airflow 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 “build it in” 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 “freezes” 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.
CAUTION:When reframing attic access, maintain the vapor barrier by using a rubber
seal around the attic door where it mates to the ceiling area. In other words, you have no
gaping holes where moisture inside of the house can easily vent to the attic area!
7. Make sure the flexible PVC pipe and electrical wiring to the PCS1 do not come into
contact with exposed nails and other sharp objects inside of the attic.
8. Lay down an extra piece of plywood from the shipping crate directly in front of or
behind the PCS1 as a service platform. In this manner, someone who has to service the unit will
not have to dangle their legs between attic joists.
9. While doing electrical work in the attic, consider wiring an outlet and light near the
PCS1 location for convenience purposes.
10. After the plumbing has been connected to the PCS1, provide some support for the
flexible PVC pipe. An easy way to accomplish this is to use “plumbers strapping” which is a flat
metal coil with holes in the metal. Simply cut off a length of metal strap and wrap around the PVC
pipe and nail the strap to a roof joist.
CAUTION: Flexible PVC pipe that simply dangles in the attic without being supported
can cause undo pressure on the union joints in the attic.
11. In large attics such as those in hipp type construction, you may want to build a small
platform from the ceiling for the PCS1 to sit on.
12. It will generally take two people to hoist and position the PCS1 into place.
13. It will generally take two people to work the flexible PVC pipe through the eaves. One
in the attic and one at the eaves.
14. The check valve in the PCS1 outlet line should be located near the rest of the support
system’s plumbing and NOT in the attic.
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