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SCU224

Indication of collector temperatures

Indicates the current collector temperature.

• COL : collector temperature (1-collector system)

• COL1 : collector temperature 1

• COL2 : collector temperature 2

COL, COL1, COL2:

Collector temperature

Display range: -40 ... +500 °F

[-40 ... +260 °C]

Indication of tank temperatures

Indicates the current tank temperature.

• TST : tank temperature (1-tank system)

• TSTB : tank temperature bottom

• TSTT : tank temperature top

(Arr = 3 and 4 only)

• TST1 : temperature tank 1 (2-tank-systems)

• TST2 : temperature tank 2 (2-tank-systems)

• TDIS : thermal disinfection temperature

(Arr = 3 only; replaces TSTT if, during thermal disin-

fection, the heating period DDIS is active)

TST, TSTB, TSTT,

TST1, TST2, TDIS:

Tank temperatures

Display range: -40 ... +500 °F

[-40 ... +260 °C]

Indication of sensors 3 and 4

Indicates the current temperature of the corresponding

additional sensor (without control function).

• S3 : temperature sensor 3

• S4 : temperature sensor 4

S3, S4:

Sensor temperatures

Display range: -40 ... +500 °F

[-40 ... +260 °C]

Indication of other temperatures

Indicates the current temperature of the corresponding

sensor.

• TSFB : temperature solid fuel boiler

• TRET : temperature heating return preheating

• TR : temperature return

TSFB, TRET, TR:

Other mea sured tempe ratures

Display range: -40 ... +500 °F

[-40 ... +260 °C]

Note:

S3 and S4 will only be indicated if the temperature

sensors are connected.

Initialization

Indicates the time adjusted in tDTO, running backwards.

INIT:

ODB initialization active

Filling time

Indicates the time adjusted in tFLL, running backwards.

FLL:

ODB ﬁlling time active

Stabilization

Indicates the time adjusted in tSTB, running backwards.

STAB:

Stabilization

4.1 Display channels

Note:

The displayed values and adjustment channels

depend on which system layout, which options

and functions have been selected. Only values

and adjustment channels available for the indivi-

dual settings selected will appear in the menu.

Indication of drainback time periods

4. Channel overview

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 51 52

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Viessmann SCU224 Manual de Serviço Página 37

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