Viessmann SCU224 User Manual page 38

SCU224
Indication of current pump speed
n %, n1 %, n2 %:
Current pump speed
Display range: 30 ... 100 %
kWh/MWh: Heat quantity
in kWh / MWh
Display channel
CDIS
Countdown of monitoring
period
Display range:
0 ... 30:0 ... 24 (dd:hh)
SDIS
Starting time display
Display range:
00:00 ... 24:00 (hh:mm)
DDIS
Heating period display
Display range:
00:00 ... 24:00 (hh:mm)
Time
Operating hours counter
h P / h P1 / h P2:
Operating hours counter
Display channel
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Indicates the current pump speed of the corresponding
pump.
• n % : current pump speed (1-pump system)
• n1 % : current pump speed pump 1
• n2 % : current pump speed pump 2
Indicates the energy gained in heat quantity – only available
if energy metering (OHQM) is activated.
The flow rate as well as the reference sensors S1 (flow) and
S4 (return) are used for calculating the heat quantity sup-
plied. It is shown in kWh in the channel kWh and in MWh
in the channel MWh. The overall heat quantity results from
the sum of both values.
The accumulated heat quantity can be reset. As soon as one
of the display channels of the heat quantity is selected, the
symbol is permanently shown on the display.
Î Press button SET (3) for about two seconds in order
to access the RESET mode of the counter.
The display symbol will flash and the heat quantity
value will be set to 0.
Î In order to finish this process, press the
to confirm.
In order to interrupt the RESET process, no button should
be pressed for about five seconds. The controller automa-
tically returns to the display mode.
If the thermal disinfection option (OTD) is activated and
the monitoring period is in progress, the remaining moni-
toring time will be displayed as CDIS (in days and hours)
and counted backwards.
If the thermal disinfection option (OTD) is activated and
a starting delay time has been adjusted, the adjusted delay
time is displayed (flashing) in this channel.
If the thermal disinfection option (OTD) is activated and
the heating period is in progress, the remaining time of the
heating period is displayed (in hours and minutes) in this
channel, counting backwards.
Indicates the actual time.
Press the button for two seconds in order to adjust
the hours. Press it again in order to adjust the minutes. Set
the time by pressing buttons 1 and 2. Press the
in order to save the adjustment.
The operating hours counter accumulates the solar opera-
ting hours of the respective relay (h P / h P1 / h P2). Full
hours are displayed.
The accumulated operating hours can be set back to zero.
As soon as one operating hours channel is selected, the
symbol is displayed.
Î In order to access the RESET-mode of the counter,
press the SET button (3) for approx. two seconds.
The display symbol will flash and the operating hours
will be set to 0.
Î Confirm the reset with the
finish the reset.
In order to interrupt the RESET-process, do not press a
button for about five seconds. The display returns to the
display mode.
button
button
button in order to