Trane BCVC User Manual
60
BCXC-SVX01B-EN
Start-Up
Zone Sensor
The Tracer™ ZN controller accepts the following zone sensor module inputs:
•
•
Space temperature measurement (10kW thermistor)
•
Local setpoint (either internal or external on the zone sensor module)
•
Fan mode switch
•
Timed override, using “on” and “cancel” buttons (Tracer ZN510 and ZN520 only)
•
Communication jack (Tracer ZN510 and ZN520 only)
Space Temperature Measurement
Zone sensors use a 10kW thermistor to measure the space temperature. Wall-mounted zone
sensors include a space temperature thermistor. Unit-mounted zone sensors have a return air
sensor mounted in the unit’s return airstream. If both a hardwired and communicated space
sensors include a space temperature thermistor. Unit-mounted zone sensors have a return air
sensor mounted in the unit’s return airstream. If both a hardwired and communicated space
Table 29. Binary output configuration
Binary output
pin connection
pin connection
Configuration
ZN010
ZN510
ZN520
J1-1
Fan high
•
•
•
J1-2
N/A
•
•
•
J1-3
Fan low
•
J1-4
(Key)
•
Fan low
•
•
J1-5
Main valve – open, or 2 pos. valve
(a)
(a) Two-pipe hydronic heat/cool changeover units use terminals J1-5 and J1-6 to control the primary valve for both heating and
cooling. Units configured and applied as 2-pipe hydronic heat/cool changeover with electric heat, use terminals J1-5 and
J1-6 to control the primary valve (for both cooling and heating), and terminals J1-9 and J1-10 for the electric heat stage.
For those 2-pipe changeover units, electric heat will not energize while the hydronic supply is hot (5 or more degrees
above the space temperature). In a 4-pipe application, pin J1-5 is for cooling and pin J1-6 for heating.
•
•
•
J1-6
Aux. valve/elec. ht.
•
•
Aux. valve – close
•
J1-7
2-pos. damper
•
•
J1-9
Heat valve – open, or 2 pos. valve, or first stage elec. ht.
•
J1-10
Heat valve – close or sec. stage elec. ht.
•
J1-11
Fresh air damper – open
•
J1-12
Fresh air damper – close
•
TB4-1
Generic / baseboard heat output
•
TB4-2
24 VAC
•
Notes:
1. If no valves are ordered with the unit, the factory default for Tracer™ ZN010 and ZN510 controllers are: main valve
configured as normally closed and aux. valve configured as normally open.
2. If the fresh air damper option is not ordered on the unit, 2-pos. damper is configured as none.
3. Pin J1-2 can be configured for an exhaust fan with the use of Rover™ software. Factory default is none.
Table 30. Zone sensor wiring connections
TB1
Description
1
Space temperature
2
Common
3
Setpoint
4
Fan mode
5
Communications
6
Communications