Function: Allows the pool water to be routed up to the PCS1 for extracting the heat from the attic. Operated
automatically from the Compool LX220/2Y controller. Can be manually operated but this is not recommended
since the PCS1 can both heat and cool pools.
Function:
Allows the pool water flow to be reversed so that the heated pool water rises from the pool's main
drain. Operated manually and left in reverse flow unless cleaning or draining the pool. Flowreversal is a trademark
of markUrban Products in Tustin, California. Recommended for inground pools that do not have the main drain
connected directly to a skimmer.
Function:Allows proper skimmer suction to be maintained during reverse flow. Operated manually and "set"
once to obtain proper suction & water flow through the skimmers.
Skimmer
Line
Flowreversal
valve output
Retrofitting the support system is the most difficult part of installing the PCS1. The reason
for this is the generally rigid and permanent nature of the typical PVC type support system’s
plumbing. This usually means having to carve up the PVC pipe and not being able to salvage and
reuse the fittings and in some cases the valves also. The good part about PVC type support
systems is that PVC pipe, fittings and general purpose valves are relatively cheap and can be
purchased in many hardware, plumbing and building stores. If you have a PVC support system
that needs to be retrofitted, plan on redoing the entire plumbing layout.
CAUTION:If you are in an area that freezes, it is common to find a gate valve on all
lines going to the swimming pool. These are the pool’s main drain line, the pool’s return line and
the pool’s skimmer line. In some instances, there may be more than just these three lines [such as
two skimmer lines, etc.]. Do not remove these valves -- they will be needed to winterize your
swimming pool. In some cases, they may have to be removed and later reinstalled.
Plan on connecting the new valves and PCS1 to the valves and pipes leading to the
swimming pool. When it comes to the filter and pump, simply rearrange these as you reconstruct
the support system’s plumbing.
In the case where copper pipes and brass valves have been used, they can be reused. If
copper or brass has been used, you will need to mate these to pvc pipe which is generally done
using a metal to rubber “mision” coupling that adapts directly to the outside dimensions of both
pipes involved. Example: 1 1/2 inch copper pipe has a different O.D. [outside diameter] than 1
1/2-inch PVC pipe. The appropriate union to couple these pipes will have a rubber insert that
matches their different sizes.
The special valves described are 2” PVC and can be reduced down to 1 1/2” by using a
“reducing bushing”. Some PVC valves accept both 1 1/2" and 2” PVC fittings directly. NOTE:
Be sure to read the valve manufacturers instructions. Also, it may be easier to use sections of rigid
2” PVC pipe for installing the specialty valves shipped with the PCS1. This would include using
The PCS1 inlet and outlet lines go to the attic. Having the support system located in a
convenient spot for easy attic access is a good strategy. Support systems located far away from the
attic can be relocated closer by extending the pool’s support piping. Extremely long pipe runs will
require added horsepower from the pool’s pump. If your pump is inadequate for the added lift to
the attic, it will reduce the flow of water and result is poorer filtration and it may thermally cut itself
off from over heating. NOTE: Do not upgrade your pump because it feels hot! Your pump will
feel “too hot” to touch by hand under normal operating conditions.
If you are building a new pool, there is no expense associated with retrofitting the support
system. Simply build the support system by following the diagrams included in this manual.
The first step in plumbing? Create a new plumbing layout!
1. Is the support system located as close to the attic as possible?
2. Can you extend the pool’s pipes closer to the house/attic?
3. If the pump is over 50’ to the attic, you may need to upgrade it by 1/2 hp.
4. How will you access the attic? Through the eaves? Garage?
5. Will the support system location allow easy attic access?
6. Is there a wall or other place to mount the LX220 by the pump and filter?
7. Is 110 or 220 vac power available from pump for the LX220 solar controller?
8. Can 220-vac power be run from the LX220 to the PCS1 in the attic?
9. Can the thermistor temperature sensor wire be run from LX220 to PCS1?
CAUTION: Locate all chemical dispensers down streamfrom the PCS1!
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