66 Installing a Cascade System
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System Application #1- Cascade System with Closely Spaced Tees
12” (30 cm)
maximum
Air separator
Sub2
Sub1
Main
Temperature
sensors (required)
Cold water
Supply
Return
Back flow preventor
Expansion tank
Note
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Connect the “SH Demand (SH T/T or Zone controller)” to the main unit.
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Connect the universal temperature sensors to SUPPLY and RETURN terminals of the CNT1/CNT2 terminal strip on the main unit
PCB.
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Connect the outdoor sensor (optional) to the main unit.
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Depending on the installation environment, the supply top and return top piping option can be applied.
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Multi-zone temperature function is also available for this application.
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