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Connect a 2 core + earth, twisted pair control cable from the C225 / C325R to the CN40/CN9/CNXYE port on the fan coil unit. This cable is supplied by iZone - CACUCM15
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The new Rinnai indoor units may have either of two connections: CN9 and CNXYE. |
For CN9 connection.
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For CNXYE Connection
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1️⃣ Indoor fan coil unit PCB
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4️⃣ Polarity is critical: Make sure it is wired in accordance with these instructions on both the CN40 /CN9/CNXYE connector on the fan coil PCB and the C225 cable connector
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