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Solar loop piping to solar heat exchanger
1. Install the ZFM-002 flexible pipes between pump station and solar storage tank heat exchanger. Connect the
gasket end of one of the ZFM-002 flexible pipes to the air separator connection with pipe tape and the gasket
provided. Connect the gasket end of the other ZFM-002 flexible pipe to the bottom solar heat exchanger
connection with pipe tape and the gasket provided.
2. Route the flextubes such that the flextube connected to the air separator is connected to the pump station bottom
left connection and the flextube connected to the heat exchanger bottom connection is connected to the bottom
right connection of the pump station. Tighten all connections securely.
3. Install solar loop pressure relief valve drain line per state or local building code. The preferred method of piping is
shown, with discharge routed from the pressure relief valve to an empty heat transfer fluid storage container using
CPVC piping or other code approved piping (not provided with VELUX solar system).
Part 3: Solar water heater system installation – 25
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