System with one tank, one circulating pump and three probes.
(Modulating circulating pump, no metering, with excess heat dissipation).
- Assigning of terminals and block diagram.
S4 S4 - V1 S3 S3 S2 S2 S1 S1
S1
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P1
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256
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Symbol Description
F Fuse
P1 Solar circulating pump
R Relay
S1 Probe PT 1000 Solar collector
S2 Probe PT 1000 Lower tank
196
EN
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Bi
M
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B
N
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code 3542A420 - Rev. 00 - 12/2021
R3 R3 R2 N L N R1 N
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R
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S3
S2
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Symbol Description
S3 Probe PT 1000 Upper tank
T1 Consent for excess heat dissipation
256 Modulating circulating pump signal
ECOTRONIC HiTech
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230 Vac
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L
N
F
NC
NA
C
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T1