Gruppo Ferroli FZ4B Instrucciones De Uso E Instalación página 81

EN
One mixed zone, one direct zone and one hot water tank circuit
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.
• Management of priority/contemporaneity with parameter FZ4B P25
• Management of Economy/Comfort only with Remote Timer Control
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 B
317a
318a 315a
In case of Stand Alone 2 confi guration it is necessary to purchase the NTC probe accessory code 1KWMA11W (2 mt.) or code 043005X0 (5 mt.)
To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0
If a hot water tank thermostat (not supplied) is used, it is necessary to purchase the accessory kit code 013017X0 (to be connected in place of the Hot water tank Probe)
RY3 RY4 RY5
11 (L) 12 (L) 13 (L)
318b 318b/318c
318b 318b/318c
FZ4B
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
C
318c
318b
fi g. 33
CALDAIA
318b
315a
M
317a
319a
318a
b
a
72a/139a 72b/139b
fi g. 32
RY6 RY7 RT1
14 (N) 15 (L) 16 (L) 19 - 20
318c 72a/139a
318c 72a/139a
319a
72a 72b
155 138
IMPIANTO
139a 139b
CONTROLLO ZONE FZ4B
155
318c
RT2 RT3 T1 T2
21 - 22 23 - 24 25 - 26 27 - 28
72b/139b 319a 155
72b/139b 319a 155
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
155 Hot water tank probe
317a 1st zone (mixed) safety thermostat
318a 1st zone (mixed) circulating pump
318b 2nd zone (direct) circulating pump
318c Hot water tank circulating pump
319a 1st zone (mixed) delivery sensor
a 1st zone (mixed)
b 2nd zone (direct)
c Hot water tank circuit
____ Necessary wiring
- - - - Optional wiring
c
T3 T4
29 - 30 30 - 31
138
81