Gruppo Ferroli FZ4B Instrucciones De Uso E Instalación página 73

EN
One mixed zone and one direct zone
Schematic diagram
Use 3-wire mixing valves:
- OPENING PHASE 230V
- CLOSING PHASE 230V
- NEUTRAL.
with switching times (from all closed to all open) of not more than
180 seconds.
Electrical connections
After installation, carry out the necessary electrical connections as shown in the wiring diagram.
Then confi gure the controller as described in the specifi c section.
RY1 RY2
7 (L) 8 (N) 9 (L) 10 (N)
318a 318a 315a - A 315a - B 315a - C
318a 318a 315a - A 315a - B 315a - C
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
A
317a
318a
To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0
RY3 RY4 RY5
11 (L) 12 (L) 13 (L)
318b
318b
FZ4B
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
B
C
315a
318b
315a
M
72a/139a
fi g. 16
RY6 RY7 RT1
14 (N) 15 (L) 16 (L) 19 - 20
318b 72a/139a 72b/139b
318b 72a/139a 72b/139b
72a 72b
319a 138
IMPIANTO
139a 139b
fi g. 17
CONTROLLO ZONE FZ4B
CALDAIA
318b
317a
319a
318a
a b
72b/139b
RT2 RT3 T1
21 - 22 23 - 24 25 - 26
319a
319a
72a 1st zone (mixed) room thermostat
72b 2nd zone (direct) room thermostat
138 External probe
139a 1st zone (mixed) Remote Timer Control
139b 2nd zone (direct) Remote Timer Control
315a 1st zone (mixed) mixing valve
A = OPENING PHASE
B = NEUTRAL
C = CLOSING PHASE
317a 1st zone (mixed) safety thermostat
318a 1st zone (mixed) circulating pump
318b 2nd zone (direct) circulating pump
319a 1st zone (mixed) delivery sensor
a 1st zone (mixed)
b 2nd zone (direct)
____ Necessary wiring
- - - - Optional wiring
T2 T3 T4
27 - 28 29 - 30 30 - 31
138
73