EZ Heat Basic Installation Manual - page 3
Follow figure 2 or figure 3 in making the water connections to the pool,
depending on whether or not using a control valve. Connections to the pool
filter system may be made either with 1 ½ inch filter hoses or 1 ½ inch
schedule 40 PVC pipe and fittings.
Your solar system is shipped with the connections as shown in figure 1. If it
is more convenient to have the connections at the opposite end of the
system, simply remove the two plugs in the short header pipes and install
them at the opposite ends of the header pipes. Remember, if the solar
system is on a slope, the inlet connections to the solar system must be lower
than the outlet connection.
If you are connection together two solar systems you will need a Coupling kit
Part #1006.
Figure 2