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Siemens QAW20 Manual

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B2812en 4 319 2285 0 g 07.05.2013
Programming
To program the room unit, the unit cover must be open!
As soon as the cover is opened, the display and the button function will
change. The framed number indicates the program line that can be se-
lected with the arrow buttons
and .
2812Z13
1 2
34
1 Line number
2 Value
3 Changing values
4 Selecting line numbers
You can set or display the following values:
• Temperatures
to
• Heating program
to
• Weekday and clock
to
• Set day values
• Holiday period
• Resetting to the default values
Setting the temperatures
In the automatic mode, the room unit switches between the nominal and
the reduced room temperature according to the heating program.
In manual operation, the temperatures are switched by pressing the pres-
ence button.
Nominal temperature:
Room temperature during room occupancy times (basic
setting).
Reduced temperature:
Room temperature during absence or in the night
Heating program
With the heating program, the temperature changeover times can be pre-
determined for one week.
The seven-day program consists of a seven-day block (1-7) in which every
day uses the same 24-hour program, or single days (1…7) with seven in-
dividual 24-hour programs (1 = Monday…7 = Sunday). Each 24-hour pro-
gram offers three heating periods each of which is defined by a start and
an end time.
If you do not use a heating period, let the start and the end times coincide.
0
4
812
16
20 24
1
2273Z07
3
2
Select the respective day for the heating period. You have the
choice of the seven-day block (1-7) and of individual days (1…7)
(1 = Monday… 7 = Sunday)
Start of period 1: Heating to the nominal temperature
End of period 1: Heating to the reduced temperature
Start of period 2: Heating to the nominal temperature
End of period 2: Heating to the reduced temperature
Start of period 3: Heating to the nominal temperature
End of period 3: Heating to the reduced temperature
Setting the time of day
For setting the current weekday
(1 = Monday…7 = Sunday)
For setting the current minute
Press buttons
and , to set the current time of day. Continuous
pressing accelerates the display.
If a central unit is used, the room unit’s clock will be synchronized with
the system’s clock and the setting on the room unit locked (display
OFF).
Set day values
Display of the set day values of all connected meters
Press buttons
and , to select the required meter, which the
display shows as a symbol.
The set day (billing day) is entered by the heating engineer. On that day,
the system updates the set day values.
Holiday function
For entering the number of days during which you will be absent.
The holiday function will be activated by closing the unit cover.
The display shows the holiday symbol
, the symbol for standby
, the day of switching on, on the left (1 = Monday…
7 = Sunday) and the number of days of the holiday period.
During the holiday period, the room unit is in the standby mode
On completion of the number of days entered, the room unit will
switch to the automatic mode
The holiday function can be cancelled by pressing any of the holiday mode
buttons.
Default values
To retrieve the default values, press buttons
and si-
multaneously for at least 3 seconds. As a confirmation, the display
will show ¦.
Caution:
In that case, the following line numbers that have previously been en-
tered will be lost:
• Temperature and time program to
• Duration of the holiday period
Detection of airing
In operating mode , the room unit detects airing if the room temperature
falls suddenly.
In that case, the heating will temporarily be switched to standby
and
symbol
appears.
The room unit returns to operating mode
when:
• The room temperature rises again
• The operating mode changes
• 45 minutes have elapsed
Central unit
If a central unit is used, the room unit may be affected in the following way:
• Limitation of settings
• Central night setback
• Clock setting locked
Status displays
Display:
2312Z21
• Clock setting locked, time of day centrally
preset
• Programming lock active (to be set by the
heating engineer)
Display:
2312Z22
• Room unit faulty
Display:
2312Z23
• External contact active. Do not press operat-
ing mode and presence button
2


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Siemens QAW20 User Manual - English - 8 pages

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Siemens QAW20 User Manual - German - 2 pages

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