S1
S2
S4 / TRF
1.2.1 Allocation of terminals for system 1 Standard solar system with 1 store, 1 pump and 3 sen-
sors. The sensor S4 / TR can be optionally used for heat
quantity measurement.
R1
Arr 1
S3
R2
S1
S2
R1
S3
S4 / TRF
Solarsystemandafter-heatingwith 1 store, 3 sensors
and after-heating. The sensor S4 / TRF can be optionally used
for heat quantity balancing.
Arr 2
1.2.2 Allocation of terminals for system 2
(PG 68.30 and PG 69.30)
Symbol Specification
S1 collector sensor
S2 store base sensor
S3 store top sensor
S4 / TRF sensor for heat quantity
measurement (optional)
R1
solar pump
R2
pump for afterheating
Symbol Specification
S1 collector sensor
S2 store base sensor
S3 store top sensor, (optio-
nal)
S4 / TR sensor for heat quantity
measurement (optional)
R1
solar pump
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