Trane Tracer ZN.520

CNT-SVX04A-EN
Configuration
80
Table 44 TB4-1 and TB4-2 output rating
Table 45 Binary inputs
1
Note
1
: Trane’s Rover service tool uses the unit type to determine and download the proper default
binary input configuration.
Note
2
: The normally open/closed configuration item refers to the inactive state of the input end device,
such as a freezestat or a condensate float switch. If the device is a normally closed condensate float
switch, the configuration for binary input 2 must be normally closed.
Table 46 Analog inputs (Note 1)
Note
1
: Trane Rover service tool uses the unit type to determine and download the proper default
analog input configuration.
Note
2
: Analog input 3 (AI 3) configured as generic temperature input does not affect unit operation.
When configured, the Tracer ZN.520 zone controller communicates the generic temperature value to
Rover or Tracer Summit and displays it as generic temperature.
Description Terminals Output Rating Load Energized Load De-energized
Generic/
baseboard heat
output
TB4-1 12 VA 1 VAC rms
(typical)
24 VAC rms(typical)
24 VAC TB4-2 12 VA NA NA
Binary input Configuration Valid range
2
BI 1 Low coil temperature detection or not used Normally open
Normally closed
BI 2 Condensate overflow or not used Normally open
Normally closed
BI 3 Occupancy, generic, or not used Normally open
Normally closed
BI 4 Fan status or not used Normally open
Normally closed
Analog input Configuration Calibration range
Zone Space temperature +/– 10.0°F
(0.1°F resolution)
Set Setpoint (hardwired) +/– 10.0°F
(0.1°F resolution)
Fan Fan switch NA
AI 1 Entering water temperature NA
AI 2 Discharge air temperature NA
AI 3 Outdoor air temperature or generic
temperature input (Note 2)
NA
AI 4 Humidity, CO
2
or generic
4-20mA input
NA