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Siemens Schweiz AG Basic units RVS61.843 and RVS41.813 CE1U2355en_02
Landis & Staefa Division Mounting and installation 3. Juli 2008
3.7 Room unit QAA75…
Planning
min.
10 cm
2261Z03
The room unit should be located in the main living room while giving consideration to
the following criteria:
The place of installation should be chosen so that the sensor can capture the room
temperature as accurately as possible without getting adversely affected by direct
solar radiation or other heat or refrigeration sources (about 1.5 meters above the
floor)
In the case of wall mounting, there must be sufficient clearance above the unit,
enabling it to be fitted and removed
When the unit is removed from its base, power is cut off so that the unit is out of
operation.
Terminal Designation QAA75.610 QAA75.611
1 CL+ BSB data BSB data
2 CL- BSB ground BSB ground
3 G+ Reserved Power supply DC 12 V
Mounting method
Connections
2359Z25
2359Z20
2359Z26
2359Z24
2359Z21
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Siemens Switzerland Basic units RVS61.843 and RVS41.813 CE1U2355en_02
HVAC Products Contents 3. Juli 2008
Dimensions and drilling plan
42
185
2359Z12
100
82
2359Z50
4,2
9
56
60
100
80
11
39
67
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Siemens Switzerland Basic units RVS61.843 and RVS41.813 CE1U2355en_02
HVAC Products Contents 3. Juli 2008
5 Handling
5.1 QAA75.. / QAA78.. / AVS37..
5.1.1 Operation
Operating elements
Room units
QAA75... / QAA78…
Operator unit
AVS37..
Selection of space heating
mode
Selection of DHW heatin
g
mode
Display of information
A
djustment of Comfort setpoint
Navigation and settings
Occupancy button
Quitting the setting
Adop
tion of setting
Selection of DHW heating
Selection of space
heatin
g
mode
Display of information
Quittin
g
the settin
g
A
djustment of Comfort setpoint
Navigation and settings
dopting the setting
Service socket
(
BSB
)
Cooling button
Cooling button
HP reset and
defrost button
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Landis & Staefa Division Handling 3. Juli 2008
Display choices
Heating to the Comfort setpoint
Holiday function active
Heating to the Reduced setpoint
Reference to heating circuit
Heating to the frost protection setpoint
Service / special functions
Cooling
Error messages
Process running – please wait
Info level activated
Change battery
Programming activated
Heating temporarily switched
off
ECO function active
Display of all segments.
2358Z07
Xxxxxxxxxxxxxxxxxxxxxxxxxxx
Xxxxxxxxxxxxxxxxxxxxxxxxxxx
Xxxxxxxxxxxxxxxxxxxxxxxxxxx
Selection of space heating mode
This button is used to switch between the different
operating modes. The selection made is indicated by a
bar which appears below the respective symbol.
Automatic mode
In automatic mode, the room temperature is controlled in accordance with the time
program.
Charactersitics of automatic mode:
Heating mode according to the time program
Temperature setpoints according to the heating program "Comfort setpoint" or
"Reduced setpoint"
Protective functions active
Automatic summer / winter changeover and automatic 24-hour heating limit active
(ECO functions)
Continuous operation
or
Continuous operation maintains the room temperature at the selected operating level.
Heating to the Comfort setpoint
Heating to the Reduced setpoint
Characteristics of continuous operation:
Heating with no time program
Protective functions active
Automatic summer / winter changeover (ECO functions) and automatic 24-hour
heating limit inactive in the case of continuous operation with Comfort setpoint
Display
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HVAC Products Contents 3. Juli 2008
Protection
When using Protection, the heating system is off. But it remains protected against frost
(frost protection temperature) provided there is no power failure.
Characteristics of continuous operation:
Heating off
Temperature according to frost protection
Protective functions active
Automatic summer / winter changeover (ECO functions) and automatic 24-hour
heating limit active
Selecting cooling mode
Cooling mode
To select cooling mode, press the Cooling button. The selection made
is indicated by a bar which appears below the symbol. In cooling mode,
the room temperature is controlled in accordance with the time
program.
Characteristics of cooling mode:
Cooling mode in accordance with the time program
Temperature setpoint in accordance with "Comfort setpoint cooling"
Protective functions active
Cooling limit depending on the outside temperature
Selecting DHW heating mode
The button is used to switch DHW heating mode on and off. The selection made is
indicated by a bar which appears below the respective symbol.
DHW heating mode
On
The DHW is heated according to the selected switching program.
Off
No DHW heating, protective function is active.
DHW push
The DHW push is triggered by keeping the DHW operating mode button on the
operator or room unit depressed for at least 3 seconds.
It can also be started when:
The operating mode is “Off“
Operating mode changeover is effected via H1 or centrally (LPB)
All heating circuits use the holiday function
(Not available)
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Landis & Staefa Division Handling 3. Juli 2008
Adjusting the room temperature setpoint
Turn the setting knob to increase or decrease the Comfort setpoint
and confirm by pressing the OK button. During active heating
mode, you can readjust Comfort setpoint “Heating”, and during
active cooling mode, you can readjust Comfort setpoint “Cooling”.
For the Reduced setpoint
Press the OK button
Select menu “Heating circuit” and
Adjust the “Reduced setpoint“
After each readjustment, wait at least 2 hours, allowing the room temperature to adapt.
The Reduced setpoint can only be set in the case of heating mode. In cooling mode,
there is no Reduced setpoint, only the Comfort setpoint.
Occupancy button
If, during the Comfort period, the rooms are not used for short
periods of time, you can press the occupancy button to lower the
room temperature, thus saving heating energy (changeover from
Comfort to Reduced setpoint), or saving cooling energy (changeover
from Comfort setpoint to OFF).
When the rooms are occupied again, press again the occupancy button to return to
normal heating (changeover from Reduced to Comfort setpoint), or to cooling
(changeover from OFF to Comfort setpoint).
In heating mode: In cooling mode:
Heating to the Comfort setpoint
Cooling to the Comfort setpoint
Heating to the Reduced setpoint
Cooling off (no symbol)
The occupancy button is only active in automatic operation
The current selection is active until the next switching action according to the heating
program takes place
Displaying information
Various data can be displayed by pressing the info button.
Depending on the type of unit, configuration and operating state, some of the info lines
listed below may not appear.
Display:
Possible error messages from the “Error code list” page 3
Possible service messages from the “Maintenance code list” page 3
Possible special mode messages
Possible displays
0
4 8 12 16 20 24
AUTO
Raumtemperatur
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HVAC Products Contents 3. Juli 2008
Other possible displays:
Room temperature Solar flow temp
Room temp min Solar return temp
Room temp max 24-hour yield solar energy
Room setpoint 1 Total yield solar energy
Room setpoint 2 Swimming pool temp
Room setpoint P Swimming pool setpoint
Outside temperature
Outside temp min
Outside temp max State heating circuit 1
DHW temp 1 State heating circuit 2
DHW temp 2 State heating circuit P
Buffer temp 1 State cooling circuit
Buffer temp 2 State DHW
Buffer setpoint State heat pump
Flow temp 1 State solar
Flow temp setpoint 1 State buffer
Flow temp 2 State swimming pool
Flow temp setpoint 2 Error message
Flow temp setpoint P Maintenance message
Collector temp 1 Floor curing function
Setpoint HP Date and time of day
Flow temp HP telephone customer service
Return temp HP
Source inlet temp
Source outlet temp
Remain stage 1 off time min
Remain stage 2 off time min
Remain stage 1 on time min
Remain stage 2 on time min
In exceptional cases, the basic display shows one of the following symbols:
Error messages
If this symbol appears, an error in the
plant has occurred. Press the info button
and read further information.
Text3 Text4
0
4 8 12 16 20 24
AUTO
2359Z140
30:Flow sensor 1
Error
Service or special operation
If this symbol appears, a maintenance
message is delivered or the plant has
changed to special operation. Press the
info button and read further information.
Text3 Text4
0
4 8 12 16 20 24
AUTO
2359Z140
30:Flow sensor 1
Error
The LPB number on the display indicates the device in the LPB system from which the
error or maintenance message, or special operation, was triggered. The first 2 digits
give the segment address, the 2 digits after the dot the device address.
Hence, 02.01 denotes segment 2, device 1.
An error list is given in section “Errors“, starting on page 181.
Exception
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Siemens Schweiz AG Basic units RVS61.843 and RVS41.813 CE1U2355en_02
Landis & Staefa Division Handling 3. Juli 2008
Manual defrost of HP / reset
The RESET button triggers different functions, depending on the number of
seconds the button is kept depressed.
When kept depressed for more than 3 seconds, the manual defrost function
is activated.
Pressing the button for less than 3 seconds triggers a reset.
If an air-to-water heat pump is used, you can manually trigger the defrost function for
the evaporator.
After successfully completing defrosting, or on completion of the maximum permissible
defrost time and permitted number of defrost attempts, the heat pump is automatically
released again. For more information on the defrost function, refer to page 124 ff.
Pending error messages from the heat pump are reset with this button. The preset
switch-on delay is bridged, thus avoiding undesirable waiting times during
commissioning or fault tracing.
This function should not be used in normal operation.
When releasing the button, the reset is made after 2 seconds.
Manual defrost of HP
HP reset
RESET
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Siemens Switzerland Basic units RVS61.843 and RVS41.813 CE1U2355en_02
HVAC Products Contents 3. Juli 2008
5.1.2 Programming the QAA75... / QAA78… / AVS37..
Setting principle
Settings that cannot be made directly with the operating elements are made through
programming. For this purpose, the individual settings are structured in the form of
menus and operating lines, thus creating practical groups of settings.
The following example shows how to set the time of day and the date.
Example “Setting the time of day“
Press the ESC button to go one step back at a time, readjusted values are not
adopted
If no setting is made for 8 minutes (2 minutes with RF devices), the unit will
automatically return to the basic display
Certain operating lines may be hidden at certain times, depending on the type of unit
and the operating level.
Operation Display example Description
1
0
4 8 12 16 20 24
AUTO
2359Z140
Room temperature
You see the basic display.
If the basic display is not shown, press
the ESC button to go back.
Press the OK button.
2
Text3
0
4 8 12 16 20 24
AUTO
2359Z140
Operator section
Time of day and date
The bottom section of the display
shows various menus.
Turn the setting knob until menu Time
of day and date appears.
Press the OK button to confirm.
3
0
4 8 12 16 20 24
AUTO
2359Z140
Time of day and date
Hours / minutes
In the bottom section of the display, the
first operating line of menu Time of day
and date appears.
Turn the setting knob until operating
line Hours / minutes appears.
Press the OK button to confirm.
4
0
4 8 12 16 20 24
AUTO
2359Z140
Time of day and date
Hours / minutes
The display shows the hours blinking.
Turn the setting knob until the hours of
the time of day are correct.
Press the OK button to confirm.
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Landis & Staefa Division Handling 3. Juli 2008
5
0
4 8 12 16 20 24
AUTO
2359Z140
Time of day and date
Hours / minutes
The display shows the minutes
blinking.
Turn the setting knob until the minutes
of the time of day are correct.
Press the OK button to confirm.
6
0 4 8 12162024
AUTO
2359Z140
Time of day and date
Hours / minutes
The settings are saved and the
displays stops blinking.
Now, you can make further settings or
you can press the operating mode or
ESC button to go to the basic display.
7
Now, you see the basic display again.
2359Z139
Time of day and date
Operator section
Wireless
Time program heating circuit 1
Time program heating circuit 2
Time program heating circuit P
Holidays heating circuit 1
Diagnostics of consumers
Hours / minutes
Month / day
Year
Start of summer time
End of summer time
Hours 1...24 h
Minutes 0...60 min
5.1.3 User levels
The user levels only allow authorized user groups to make settings. To reach the
required user level, proceed as follows:
Operation Display example Description
1
0
4 8 12 16 20 24
AUTO
2359Z140
Room temperature
You see the basic display.
If the basic display is not shown,
press the ESC button to go back.
Press the OK button.
2
Text3
0
4 8 12 16 20 24
AUTO
2359Z140
Operator section
Time of day and date
You are on user level Enduser.
Press the info button for 3 seconds.
Example of menu
structure
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HVAC Products Contents 3. Juli 2008
Text3
0
4 8 12 16 20 24
AUTO
2359Z140
Commissioning
Enduser
You are now given a choice of user
levels.
Turn the setting knob until the
required user level is reached.
Press the OK button.
3
Text3
0
4 8 12 16 20 24
AUTO
2359Z140
Operator section
Time of day and date
You are now on the required user
level.
To reach the OEM level, the relevant code must be entered.
Setting structure “Enduser“
The example given here shows that certain user levels do not allow certain settings.
The example shows them highlighted. On the unit, they are hidden.
2359Z139
OEM
Time of day and date
Operator section
Wireless
Time program heating circuit 1
Time program heating circuit 2
Time program heating circuit P
Holidays heating circuit 1
Diagnostics of consumers
Hours / minutes
Month / day
Year
Start of summer time
End of summer time
Hours 1...24 h
Minutes 0...60 min
Heating engineer
Commissioning
Enduser
Setting structure ”Heating engineer“
Time of day and date
Operator section
Holidays heating circuit 1
Diagnostics of consumers
Time program heating circuit 1
Time program heating circuit 2
Time program heating circuit P
Wireless
Hours / minutes
Month / day
Year
Start of summer time
End of summer time
1

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