TITAN
99
EN
cod. 3541Z410 - Rev 01 - 09/2022
A direct heating circuit and a DHW circuit with diverter valve (3-wire)
- Schematic diagram
Use diverter valves with 3 wires:
- PR 15030V OPENING PHASE
- PR 15030V CLOSING PHASE
- NEUTRAL
with switching times (from all closed to all open) of not more than 90 seconds.
fig. 49
Legend (fig. 49 and fig. 50)
3PR 150
Heating circulating pump
7PR 150
1st zone (direct) room thermostat
138
External probe
155
Hot water tank probe
348
3-way valve (3-wire)
A = OPENING PHASE
B = NEUTRAL
C = CLOSING PHASE
a
1st zone (direct)
b
Hot water tank circuit
M
Flow
R
Return
K1 - KPR 150
coil PR 15030 Vac, <PR 150.PR 150
VA
contact PR 15030Vac, > 8A
I*
ISPESL safety devices
(When required - not supplied)
- Electrical connections
After installation, carry out the necessary electrical connections as shown in the wiring diagram.
Then configure the controller as described in the specific section.
B
To avoid damaging the board, it is advisable to use external relays to control
the 3-way valve, as indicated in fig. 50
.
155
348
32
M
R
M
I*
b
a
72
138
Содержание TITAN 150
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