Viessmann SCU224 Instrukcja Obsługi Pobierz pdf (Strona 12)

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SCU224

S4 / TR

System layout 3

The controller calculates the temperature difference bet-

ween collector sensor S1 and tank sensor S2. If the diffe-

rence is larger than or identical to the adjusted switch-on

temperature difference (DT O), the solar pump will be

operated by relay 1, and the tank will be loaded until the

switch-off temperature difference (DT F) or the maximum

tank temperature (S MX) is reached.

Sensor S3 is used for a thermostatic function, which ope-

Arr 3

Display Channels

Channel Description Terminal Page

INIT

ODB initialization active - 37

FLL

ODB ﬁlling time active - 37

STAB

ODB stabilization in progress - 37

COL x Temperature collector S1 37

TSTB x Temperature tank 1 bottom S2 37

TSTT x Temperature tank 1 at the top S3 37

TDIS

Thermal disinfection temperature S3 37

S4 x Temperature sensor 4 S4 37

TR x* Temperature return sensor S4 37

n1 % x Pump speed R1 R1 38

h P1 x Operating hours R1 R1 38

h P2 x Operating hours R2 R2 38

kWh

Heat quantity kWh - 38

MWh

Heat quantity MWh - 38

CDIS

Countdown of monitoring period - 38

SDIS

Starting time display - 38

DDIS

Heating period display - 38

TIME x Time - 34

rates relay 2 for backup heating or heat dump purposes,

when the adjusted thermostat switch-on temperature

(AH O) is reached. This function can optionally be com-

bined with up to three adjustable time frames.

Sensor S3 can also be optionally used as a reference sensor

for the thermal disinfection function OTD.

Sensor S4 can optionally be connected for measurement

purposes. If energy metering (OHQM) is activated, sensor

S4 has to be connected as return sensor.

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 51 52

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