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PHASE I — Site Preparations & Planning Cont'd
Plumbing Layout
Roof-based plumbing involves two parts, the plumbing
connections between several individual Panels and the
supply and return lines that connect each row of Pan-
els to the pool plumbing.
Row-to-piping connections may only be installed in the
End Supply/Return or Reverse/Return styles. To en-
sure each Panel receives adequate flow, install End
Supply/Return rows with a maximum of 10 Panels
and Reverse/Return rows with a maximum of 15.
Row-to-piping connections must be designed in such a
way that all bottom headers can drain when the sys-
tem is turned off. Ensuring that horizontal runs of pipe
have a level or slightly downward slope will allow prop-
er drainage to the pool. If plumbing does not drain
down when the system is turned off due to local en-
trapment, manual drain valves should be installed for
simple winterization. Systems that require manual
draining will be required to maintain a winterization
service record history.
NOTE: See your warranty policy for specifics of cov-
erage policies.
Systems with more than one row require means of flow
balancing. A common high point return (seen in Figure
5) will achieve proper Panel flow uniformity. Plumbing
the return line with a high point will enable a compara-
ble backpressure on the return line of each bank and
therefore match Panel flow throughout the array.
Unlike FAFCO
CoolPV
®
®
and Separated Tube ST Systems do not utilize an indi-
vidual high-point-return line. When installing both
Connected Tube CT and CoolPV
must conform with the schematics in Figure 8 to en-
sure the system is properly balanced and drains as
intended.
It is acceptable to omit a high point return and use
balancing valves to achieve adequate bank flows. In
most cases, a high point return style plumbing will be
the easiest to achieve, but in circumstances where a
high point plumbing routing is not a good option, bal-
ancing valves can be used instead. For specifics of in-
stalling a Connected Tube or Separated Tube system
with balancing valves, refer to Appendix C.
Systems, Connected Tube CT
Systems, plumbing
®
A) Multi-Bank Reverse Return
B) Multi-Bank Same End Return
Figure 5 | High Point Return Line
Multi-Bank CT Pool Systems utilize a common high point return line.
This enables each bank to have proportional feed and return line
backpressures which limits the water to favor the path of least re-
sistance. Without a common high point return line, the lowest bank
will see too much flow and the top won't see enough, resulting in
poor performance of the top bank. Notice A) is an example of a
Multi-Bank Reverse Return and B) is a Multi-Bank Same End Return.
®
15
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