Input/output functions and wiring for typical applications
Figure 17. Four-pipe heating/cooling unit with face-and-bypass damper
Occupancy (open=occupied)*
Condensate overflow (closed=normal)*
Low-coil-temperature detection
(closed=normal)*
H
24 Vac
N
30
Fan, high speed
Fan status (closed=on)*
Entering water
LonTalk
temperature
Discharge air
temperature
†
†
24 V
24 V
Exhaust (or fan, medium speed)
†
24 V
Fan, low speed
†
24 V
Cooling isolation valve, open/close
AI4 input: See
Figures
Step 5
and
Step 6
on
p. 18
for wiring
options
Outdoor air or
generic temperature
* All binary inputs are configurable.
†
Connect 24 V to an AC POWER (24V) terminal.
†
24 V
Face and bypass damper actuator
†
24 V
Heating isolation valve, open/close
†
24 V
Outdoor air damper actuator
†
24 V
Generic/baseboard heat
LonTalk
in
out
CNT-SVX07D-EN