CNT-SVX07D-EN
23
Input/output functions and wiring for typical applications
Figure 10. Four-pipe hydronic heating/cooling unit
LonTalk
in
Entering water
temperature
Outdoor air or
generic temperature
24 V
†
Exhaust (or fan, medium speed)
24 V
†
Fan, low speed
24 V
†
Fan, high speed
Low-coil-temperature detection
(open=normal)*
Condensate overflow (closed=normal)*
Occupancy (open=occupied)*
LonTalk
H
N
24 Vac
24 V
†
Generic/baseboard heat
24 V
†
Cooling valve
out
Fan status (closed=on)*
24 V
†
Outdoor air damper actuator
Discharge air
temperature
24 V
†
Heating valve
O
pen
Cl
o
s
e
O
pen
Cl
os
e
O
pen
Cl
o
s
e
* All binary inputs are configurable.
†
Connect 24 V to an AC POWER (24V) terminal.
AI4 input: See
Figures
and
on
for wiring
options
Summary of Contents for Tracer ZN521
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