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System 2A:
with 1 tank, 1 circulating pump and 3 probes.
(No modulating circulating pump, No metering, With additional heating).
- Assigning of terminals and block diagram.
P1
Symbol Description
S2 (B) Lower tank NTC probe
S3 (C) Solar collector PT1000 probe
P1 Solar circulating pump
AUX 2 Closes in case of fault
AUX 1 Closes shutter
1
2
3
NTC
B
4
5
PT1000
C
6
7
PT1000
D
8
9
10
11
12
NC
FREE
CONTACT
S3
NO
cod. 3540V011 - 03/2017 (Rev. 00)
25
230 Vac
50 Hz
24
23
22
21
20
L
19
AUX 2 (230 Vac)
18
N
17
L
AUX 1 (230 Vac)
16
N
15
14
COM
FREE CONTACT
13
S1
S2
Symbol Description
S1 (D) Upper tank PT1000 probe
T1 Consent for add. heating
Necessary
Optional
ECOTRONIC tech
T1
115
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