Trane Tracer ZN521 Installation And Operation Manual page 33

Condensate overflow (closed=normal)*
Low-coil-temperature detection
(closed=normal)*
H
24 Vac
N
CNT-SVX07C-EN
Figure 7. Two-pipe hydronic-cooling unit
Fan status (closed=on)*
Occupancy (open=occupied)*
Entering water
LonTalk
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
Cooling valve
†
24 V
Electric heat, stage 1 (optional)
†
24 V
Electric heat, stage 2 (optional)
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
23