Ferroli OPERA Instructions D'utilisation, D'installation Et D'entretien page 149

OPERA
Legend
139 Remote Control: it can be installed in place of 72 to manage the request of the 1st zone (direct)
300 Burner On indication (voltage-free output): the example shows the connection of an hour counter at 230Vac
301 Fault indication (voltage-free contact output): the example shows the connection of a lamp at 230Vac
302 Remote reset input (230Vac): the example shows the connection of a double-pole switch at 230Vac, allowing the resetting of a
block type fault
357 Fault indication (230Vac): the example shows the connection of a lamp at 230Vac
Two mixed heating circuits, one direct heating circuit and one DHW circuit with circulating pump
- Schematic diagram
The FZ4B zone control board can manage different types of systems. An example is given.
Use diverter valves with 3 wires:
- 230V OPENING PHASE
- 230V CLOSING PHASE
- NEUTRAL
with switching times (from all closed to all open) of not more than 180 seconds.
138
EN
FZ4B
M
315a
I*
M
R
cod. 3541R960 - Rev. 00 - 09/2019
72/139a 72/139b 72/139c
317a 317b
318a 318b
318c
319a 319b
315b
M
a b c
fig. 44
155
300
130
d
149