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Caution
Description
Effect
Description
Siemens Building Technologies
HVAC Products
The QAA73.110 has no frost protection function for d.h.w. heating. Frost protection for
d.h.w. must be ensured by boiler control.
3.3
Occupancy button
In automatic and continuous operation, the heating circuit operation level can be
changed by pressing the occupancy button.
Current operating mode
Automatic operation
Continuous operation
D.h.w.
Holiday program
summer operation
3.4
Info button
The Info level can be accessed any time by pressing the Info button. By repeatedly
pressing the Info button, the various data made available by the Info level can be
queried.
Line
Display
1
Time of day, actual room temperature and operating mode
2
Indication of faults
3 *
Status display:
4
Time of day and operating state heating circuit 1
5
Time of day and date
6 *
Actual value of outside temperature
7 *
Lowest outside temperature**
8 *
Highest outside temperature**
9
Actual value of the room temperature
10
Lowest room temperature**
11
Highest room temperature**
12 *
Actual value of d.h.w. temperature
13 *
Actual value of the boiler temperature
14 *
Actual value of flow temperature
15 *
Burner modulation
16 *
Water pressure heating circuit
Depending on the configuration made (operating line 150), the information selected last
is continuously displayed, or changes back to the standard display after 8 minutes.
Basic Documentation QAA73.110 Room unit
Description of enduser settings
Effect on occupancy button
The heating circuit operation level changes temporarily
from nominal to reduced, or vice versa. This changeover
is maintained until the next level changeover point of the
time switch program is reached.
The change taking place after pressing the occupancy
button will be indicated by the time pointer and appears
on the display.
The effect relates to HC1 + 2 or only to HC1, depending
on the selection of function 153.
The heating circuit operation level changes from nominal
to reduced, or vice versa.
The occupancy button has no effect on d.h.w. heating.
The occupancy button has no effect.
After automatic summer changeover, the occupancy
button has no effect.
23/70
CE1P2284en
10.07.2002
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