Ferroli ECOTRONIC tech Instrucciones De Uso E Instalación página 133

EN
System 4 "east/West":
(Self-regulating circulating pump, Metering, No additional heating/No excess heat dissipation).
- Assigning of terminals and block diagram.
The second accessory NTC probe must be purchased
Symbol Description
S2 (B) Lower tank NTC probe
S3 (C) Solar collector "A" PT1000 probe
P1 Solar circulating pump "A"
AUX 2 Closes in case of fault
S4 (D) Solar collector "B" PT1000 probe
P2 Solar circulating pump "B"
S1 (A) Solar return NTC probe
with 1 tank, 2 circulating pumps and 4 probes.
1
NTC
A
2
3
NTC
B
4
5
PT1000
C
6
7
PT1000
D
8
9
10
11
12
S3 S4
A B
M Bi B N
P1
256
cod. 3540V011 - 03/2017 (Rev. 00)
25
230 Vac
50 Hz
24
23
AUX 2 (230 Vac)
22
21
20
19
18
17
16
R
15
14
13
M Bi B N
256
P2
S1
Symbol Description
256 The contacts must not be connected and must
be suitably protected
R Relay
F Fuse
Necessary
Optional
ECOTRONIC tech
L N
L
F
N
NA NC
R
C
M B G/V
L N
F
NA NC
C
M B G/V
S2
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