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ECOTRONIC tech
System 3B: with 1 tank, 1 circulating pump and 4 probes.
(Modulating circulating pump, Calculation, With elimination of excess heat).
- Assigning of terminals and main diagram.
The second accessory NTC probe must
be acquired
25
230 Vac
50 Hz
24
1 NTC
2 A
3 NTC
4 B
5
6
PT1000
C
7 PT1000
D
8
SOLAR
CIRCULATING
PUMP
22
21
20
10
19
L
18
N
17
L
16
N
11
12
AUX 1
NC
FREE
CONTACT
S3
4
X2
1
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
S4 (A)
Solar Return
NTC probe
S1 (D)
Upper tank
PT1000 probe
T1
Consent for
elimination of excess
heat
F1
Solar
Flowmeter
Necessary
Optional
AUX 2 (230 Vac)
AUX 1 (230 Vac)
15
14
COM
NO
Description
S2 (B)
23
9
AUX 2
Symbol
FREE CONTACT
13
X1
8
1
OUT
+5V
GND
ECOTRONIC tech
Display
F1
T1
P1
S1
S2
S4
Cod. 3540V010 - 07/2010 (Rev. 00)
89