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Chapter 3 Termination board wiring
26 BMTK-SVN01D-EN
Wire optional inputs and outputs
The Tracker controller provides input and output terminals as follows:
• Input for an optional priority shutdown device
• Input for an optional utility pulse meter
• Input for an optional outdoor air temperature sensor
• Output terminal for an optional alarm relay
Refer to Table 6 for input and output wire specifications, and to the
termination board wiring diagram in Figure 14 on page 24 for wiring all
inputs and outputs.
Table 6. Input and output wire specifications
Input and output
terminals
Description Wire specifications
Alarm relay output
TB1-4, TB1-5
Binary output
Dry contact
Operating range: 24 V, 1 A
maximum
Trane recommends 18 AWG (1.02 mm
2
) wire and metal
conduit.
Maximum length = 1000 ft (305 m) *†
Priority shutdown
device input
TB1-6, TB1-7
Binary input
Operating range:
12 Vdc nominal
(10 Vdc to 14 Vdc) at
12 mA nominal
(10 mA to 14 mA)
< 50 Ω = switch closed
> 1000 Ω = switch open
Trane recommends 18—22 AWG (1.02 mm
2
—0.643mm
2
)
wire and metal conduit.
Maximum length = 1000 ft (305 m) *‡
Utility pulse meter
input
TB1-8, TB1-9
Thermistor input
TB1-10, TB1-11,
shield ground TB1-12
Analog input for an outdoor air
temperature sensor
Operating range:
From –50ºF to 200ºF
(–46ºC to 93ºC)
Thermistor, 10 kΩ at 77°F (25°C)
Shielded wire, 18—22 AWG (1.02 mm
2
—0.643mm
2
)
twisted pair
Maximum length = 300 ft (91 m) *‡
* All field-installed binary wiring is low voltage and must comply with National Electrical Code (NEC) and federal, state, and
local electrical codes.
† Alarm relay wires and 24 Vac wires may reside in the same conduit.
‡ Do not run input wires and ac power wires together in the same conduit or wire bundle.