Trane Tracer ZN521 Installation And Operation Manual page 41

Occupancy (open=occupied)*
Condensate overflow (closed=normal)*
Low-coil-temperature detection
(closed=normal)*
H
24 Vac
N
LonTalk
CNT-SVX07C-EN
Figure 15. Two-pipe heating unit with face-and-bypass damper
Fan status (closed=on)*
Entering water
temperature
Discharge air
temperature
Wiring requirements and options
†
24 V
Fan, high speed
†
24 V
Exhaust (or fan, medium speed)
†
24 V
Fan, low speed
†
24 V
Face & bypass damper actuator
24 V
Heat isolation valve, open/close
24 V
Outdoor air damper actuator
AI4 input: See
Figures 5 and 6
on page 20 for
wiring options
Outdoor air or
generic temperature
* All binary inputs are configurable.
†
Connect 24 V to an AC POWER (24V) terminal.
†
†
†
24 V
Generic/baseboard heat
LonTalk
in
out
31