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System with one tank, one circulating pump and four probes.
(Modulating circulating pump, metering, with excess heat dissipation).
- Assigning of terminals and block diagram.
An accessory PT 1000 probe must be purchased
S4 S4 - V1 S3 S3 S2 S2 S1 S1
S1
P1
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256
S4
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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
S3 Probe PT 1000 Upper tank
S4 Probe PT 1000 Solar return
T1 Consent for excess heat dissipation
256 Modulating circulating pump signal
198
EN
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M
Bi
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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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ECOTRONIC HiTech
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230 Vac
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L
N
F
NC
NA
C
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T1
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