Ferroli ECOTRONIC HITECH Instructions De Montage Et D'utilisation page 188

System with one tank, one circulating pump and three probes.
(Modulating circulating pump, metering, No supplementary heating/No excess heat dissipa-
tion).
- Assigning of terminals and block diagram.
S4 S4 - V1 S3 S3 S2 S2 S1 S1
S1
P1
256
Symbol Description
P1 Solar circulating pump
S1 Probe PT 1000 Solar collector
S2 Probe PT 1000 Lower tank
S3 Probe PT 1000 Solar return
256 Circulating pump signal (PWM versions only)
188 EN
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/
S2
S3
code 3542A420 - Rev. 00 - 12/2021
ECOTRONIC HiTech
R3 R3 R2 N L N R1 N
/
/ / / / /
/ / / / / /
230 Vac
/