Binary Wiring - Trane Symbio 210 Installation, Operation And Maintenance Manual

Wiring Installation

Binary Wiring

Binary Input Wiring
Each Symbio 500 controller provides three (3) binary inputs (BI1–BI3) with one being configured for
occupancy with the standard VAV code. The binary inputs can be configured with the Tracer TU service
tool for occupancy or other use. The input associates 0 Vac with open contacts and 24 Vac with closed
contacts. It is activated by a dry contact switch closure. Binary input wiring must meet the following
requirements:
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Occupancy Binary Input
The occupancy binary input can be configured as normal open (NO) or normal closed (NC). Occupied is
the normal state and the initial state at power-up and after a reset. Unoccupied is the other state. If the
binary input is set as Out of Service, the default occupancy mode is occupied.
Binary Output Wiring
Binary outputs that are required for unit operation are factory wired and commissioned. The Symbio 500
controller does have extra binary outputs available for other use with most configurations. To program
the extra outputs on the Symbio 500 controller, refer to the Symbio 500 Programmable Controller
Installation, Operation, and Maintenance Manual (BAS-SVX090).
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Use 18 to 22 AWG.
Maximum wire length 1,000 ft. (300 m).
BAS-SVX091A-EN