Dm60 And Communication Master/Slaves - Lennox FCM 85 Installation, Operating And Maintenance Manual

DISPLAY DM60

DM60 AND COMMUNICATION MASTER/SLAVES

If the master/slaves communication bus is connected between several rooftop (maximum 8).
The 'DM60', connected on this bus, allows viewing, alternatively, information of all connected units.
MASTER / SLAVES / DM60
The inter-bus boards (pLan) CLIMATIC™ connects to connector J8 on the BM60 cards.
Connection with 'star' is not recommended for optimum performance it is advisable to connect a maximum of two cables per unit.
The connection must be wired as follows:
• For a length of 0 to 300 m: AWG22 (0.34 mm ²), a twisted pair shielded.
• For a length of 0 to 500 m: LiYCY-P (0.34 mm ²), a pair overall shield.
cable length should not exceed 500 m.
For better protection of electromagnetic disturbances Lennox recommends the installation of cable LiYCY-P.
WARNING : The BM60 24Vac cards should not be connected to the 'earth'.
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DC60-DM60_ROOFTOP-IOM-1307-E