DURASTAR DRAM30S1A - Communication Cable Wiring; Warnings and SW1 DIP Switch Setting

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DURASTAR.COM34
Wiring the Communication Cable
The air handler ships with DIP SWITCH SW1 defaulted to off as seen below. Under this setting,
the system will AUTOMATICALLY detect which of the three connection methods on the
following page has been used. In the event of unexpected failure, the SW1 can be switched
according to connection methods 1, 2,and 3.
Wiring diagram
Power
wire
TO POWER SOURCE
OR OUTDOOR
Class 2 wire
WARNING
Isolate the power supply leads from the communication wire leads by using
different knockouts in the cabinet and/or zip ties.
Default Indoor Unit
SW1
WARNING
TURN OFF POWER BEFORE ADJUSTING DIP SWITCHES.
WARNING
DO NOT connect 24VAC to the S1/S2 terminals. This will damage the system.
Only connect to Class 2 terminals.