
Chapter 4 Input/output functions and wiring for typical applications
Figure 8. Two-pipe hydronic-heating unit
Fan status (closed=on)*
Occupancy (open=occupied)*
Condensate overflow (closed=normal)*
24 Vac H N
24 V†
Fan, high speed
24 V†
Exhaust (or fan, medium speed)
24 V†
Fan, low speed
| 24 V† |
|
| Heating valve | |
|
| 24 V† |
|
| Outdoor air damper actuator |
|
| 24 V† |
Open Close | Open Close | Generic/baseboard heat |
|
Entering water
LonTalk temperature
Discharge air temperature
24 |
|