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[email protected]System-30 BTU Measurement System Manual 05/14 - 0667-2 / 18335 Page 17
3.3.2 Electrical Wiring
Connect all BTU meter signal outputs to terminal strip T1 and/or T4 (optional
communication output) as shown below.
Then connect the 24 V AC/DC input power to terminal strip T1. The standard SYSTEM-30
is congured for 24 V AC 60 Hz operation or 24 V DC operation. Do not connect the 24 V
AC/DC source until all other signal connections have been made and veried.
View of Signal Connection Board
1
2
3
4
5
1
2
3
4
5
6
7
8
TB1
TB4
+
-
Btu Mode 1Contact
Btu Mode 2 Contact
}
}
}
24V AC/DC
+
-
}
Analog Output
+
-
}
RS485
+
-
}
Aux Pulse Input
RS485 Common
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