Viessmann SCU345, Manual

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6 Functions and options
6.1 Status level
Note
The values and adjustment channels shown
depend on the selected system, the func-
tions and options and will only be displayed
in the expert level.
Display of collector temperatures
TCOL(1, 2)
Collector temperature
Display range: -40.0 ... +260.0 °C [-40.0 ... 500.0 °F]
Displays the current collector temperature.
• TCOL : Collector temperature (1-collector
system)
• TCOL1 : Collector temperature 1 (2-collector
system)
• TCOL2 : Collector temperature 2 (2-collector
system)
Display of tank temperatures
TST1 (2, 3)B, TST1 (2)T
Tank temperatures
Display range
: -40.0 ... +260.0 °C [-40.0 ... 500.0 °F]
Displays the current tank temperature.
• TST1T : Temperature tank 1 top
• TST1B : Temperature tank 1 bottom
• TST2T : Temperature tank 2 top
• TST2B : Temperature tank 2 bottom
in 3-tank systems only:
• TST3B : Temperature tank 3 bottom
Display of temperatures at S3, S4 and S5
S3, S4, S5
Sensor temperatures
Display range
: -40.0 ... +260.0 °C [-40.0 ... 500.0 °F]
Indicates the current temperature at the correspond-
ing additional sensor (without control function).
• S3 : Temperature sensor 3
• S4 : Temperature sensor 4
• S5 : Temperature sensor 5
Display of further temperatures
DTS1, DTS2, SENTH,
TFHQM, TRHQM
Further measured temperatures
Display range: -40.0 ... +260.0 °C [-40.0 ... 500.0 °F]
Indicates the current temperature at the correspond-
ing sensor. The display of these temperatures depends
on the system selected.
• DTS1 : Temperature heat source
∆
T function
• DTS2 : Temperature heat sink
∆
T function
• SENTH : Temperature thermostat function
• TFHQM : Temperature fl ow (HQM)
• TRHQM :Temperature return (HQM)
Display of fl ow rate
L/h
Flow rate
Display range: 0 ... 9999 l/h
Indicates the fl ow rate in the solar system during en-
ergy metering.
During heat quantity balancing, the fi xed fl ow rate
value adjusted is indicated.
Note
Only if temperature sensors are connected,
will S3, S4 and S5 be displayed.
Note
For heat exchange etc., S3/S5 are used as
heat source / heat sink sensor respectively.