TITAN
101
EN
cod. 3541Z410 - Rev 01 - 09/2022
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: OPENING PHASE 230V - CLOSING PHASE 230V - NEUTRAL, with switching times
(from fully closed to fully open) not exceeding 180 seconds
fig. 52
Legend
(fig. 52 and fig. 53)
72a
1st zone (mixed) room thermostat
72b
2nd zone (mixed) room thermostat
72c
3rd zone (direct) room thermostat
130
Hot water tank circulating pump
138
External probe
139a
1st zone (mixed) Remote Timer Control
139b
2nd zone (mixed) Remote Timer Control
139c
3rd zone (direct) Remote Timer Control
155
Hot water tank probe
300
Anti-Legionella circulating pump
315a
1st zone (mixed) mixing valve
A =
OPENING PHASE
B =
NEUTRAL
C =
CLOSING PHASE
315b
2nd zone (mixed) mixing valve
A =
OPENING PHASE
B =
NEUTRAL
C =
CLOSING PHASE
317a
1st zone (mixed) safety thermostat
317b
2nd zone (mixed) safety thermostat
318a
1st zone (mixed) circulating pump
318b
2nd zone (mixed) circulating pump
318c
3rd zone (direct) circulating pump
319a
1st zone (mixed) flow sensor
319b
2nd zone (mixed) flow sensor
M
Flow
R
Return
a
1st zone (mixed)
b
2nd zone (mixed)
c
3rd zone (direct)
d
Hot water tank circuit)
I*
ISPESL safety devices (When required - not su-
pplied
130
d
155
300
a
b
c
317a
72/139a
FZ4B
319a
318a
315a
317b
319b
318b
318c
72/139b
72/139c
315b
M
R
I*
M
M
138
Содержание TITAN 150
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