EN
System 2B:
with 1 tank, 1 circulating pump and 3 probes.
(No modulating circulating pump, No metering, With excess heat dissipation).
- Assigning of terminals and block diagram.
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
X2
X1
4
1
8
Display
ECOTRONICH tech
S3
P1
256
cod. 3540V011 - 03/2017 (Rev. 00)
25
24
23
22
21
20
19
18
17
16
NC
15
FREE
14
CONTACT
COM
FREE CONTACT
13
1
NO
B
M
B
M
S1
S2
Symbol Description
S1 (D) Upper tank PT1000 probe
256 Circulating pump signal (PWM versions only)
ECOTRONIC tech
230 Vac
50 Hz
L
AUX 2
(230 Vac)
N
L
AUX 1
(230 Vac)
N
T1
Necessary
Optional
123