Download Viessmann SCU224 Technical data

SCU224
1.2.3
Wiring connections for system 2
Solar system and heat exchange with an existing
tank with 1 tank, 4 sensors and 2 pumps.
Arr 2
S1
R1
S3
Tank 1
Tank 2
S4
S2
R2
1.2.4 Wiring connections for system 3
Symbol
S1
S2
S3
S4
R1
R2
Specification
Collector sensor
Tank sensor lower
Tank sensor at the top
Tank Sensor 2
Solar pump
Pump for heat exchange
Solar system and after-heating with 1 tank, 3 sensors
and after-heating. Sensor S4 / TRF can optionally be used for
heat quantity balancing.
Arr 3
R1
S4 / TRF
S3
S2
R2
Symbol
S1
S2
S3
S4 / TRF
R1
R2
|6
Specification
Collector sensor
Tank sensor lower
Tank sensor at the top
Sensor for heat quantity
balancing (optional)
Solar pump
Pump for heat exchange
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