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"East/West" system: with one tank, two circulating pumps and four probes.
(No modulating circulating pump, Metering, No supplementary heating/No excess heat dissi-
pation).
- Assigning of terminals and block diagram.
The accessory PT 1000 probe must be purchased
S4 S4 - V1 S3 S3 S2 S2 S1 S1
A
P1
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Symbol Description
P1 Solar circulating pump "A"
P2 Solar circulating pump "B"
S1 Probe PT 1000 Solar collector "A"
S2 Probe PT 1000 Lower tank
186
EN
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S1
S3
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B
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code 3542A420 - Rev. 00 - 12/2021
R3 R3 R2 N L N R1 N
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P2
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S4
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Symbol Description
S3 Probe PT 1000 Solar collector "B"
S4 Probe PT 1000 Solar return
ECOTRONIC HiTech
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S2
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230 Vac
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