Siemens Climatix POL822 Instruction

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Siemens room unit QAA822 Building Technologies

Use

The room unit is intended for basic users control and monitoring of
the function of Mandík air conditioning units incl. basic parameters.
The measurement of temperature of the room, where the room unit
is installed, is integrated. Up to two room units can be connected to
the Mandík measurement and control system. The room unit is not
intended for setting the configuration parameters. The
configuration parameters are set on the control panel of Climatic
controller or through the web viewer of the computer connected to
the Climatix controller installed in the switchboard with OS
designation. The parameter setting is described in the document
„Detailed instruction for control through HMI Climatix“.

Characteristics

The room unit is intended for semi-flushed surface mounting with a
recessed installation box. The cable entry is through the rear of the
unit.
The unit consists of a front cover with electronics and a rear cover.
The rear cover can be removed after loosening the safety
mechanism.
The front cover comprises a printed-circuit board and a room
temperature sensor, an LCD panel and key buttons for selection of
operating mode, temperature set-up, time setting and fan speed.
The rear cover includes terminal connections for connection of two­wire communication conductors. Both covers are made of plastic
material.

The cover removal is described in the Installation manual that
forms a part of the package.

Control buttons and display

Cover removal

No.

Icon

Name

Function

1 ON/OFF

Button for switching on or off the air conditioning
unit.

2 Occupancy

The button enables to switch on/off temporarily the
occupancy mode in the time programme.

3 Parameters

The button enables to change the required
temperature values or to quit the viewing of the
actual temperatures.

4  Minus

The button for changing the set-point of the selected
parameter or temperature.

5  Plus

The button for changing the set-point of the selected
parameter or temperature.

6 Info

By pressing the button the viewing of current
temperatures is activated or the possibility to change
the required temperatures is quitted.

7 Fan

The button is used to set the fan speed within the
pre-set fan speeds for the modes Economy and
Comfort.

8 Mode

Using this button you can switch between the modes
Time Schedule, Economy and Comfort, when the
air conditioning unit is on.

Buttons

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Siemens room unit QAA822 Building Technologies

No.

Icon

Meaning

1

Temperature in °C (resolution 0.1 °C).

The temperature can be adjusted with a resolution of

0.5°C.

2

Time

3

Fan speed. Number of stages

4

Weekday indicator in the lower part of the display.

5

Modes are switched off – the air conditioning unit is off
or it works in the complementary mode of room frost
protection based on parameters in the room unit
setting).

6

Automatic change of air conditioning unit modes
according to the time schedule. It is not used, if no time
schedule is available.

7 Economy mode - the air conditioning unit is on.

8 Comfort mode - the air conditioning unit is on.

9

Cooling is on; the flashing icon indicates a cooling
failure.

10

Heating is on; the flashing icon indicates a heating
failure.

11

Humidifying is on; the flashing icon indicates a
humidifying failure.

12

Complementary mode is on; the flashing icon indicates
the complementary mode failure.

13

Fans are on; the flashing icon indicates a fan failure.

14

Operation with the use of power-saving function of
energy recovery and air mixing. The flashing icon
indicates the failure of generator energy saving
function.

15

Failure indication. The flashing icon indicates a new
failure. The lighting icon indicates an extinct failure not
confirmed/quitted by the operator or a failure that has
been quit by the operator, but has not extinguished yet.
Further details are given by flashing icons. The specific
failure is displayed on the control panel of the Climatix
controller or web viewer of the computer connected to
the Climatix controller in the OS-designated
switchboard.

16

Indication of non-standard operation or status of the air
conditioning unit. The lighting icon indicates a non­standard operation, so-called non-serious failure
(clogged filter, thawing air conditioning/condensing unit,
etc.). The flashing unit indicates blocking of the air
conditioning unit operation due to non-meeting of
operating conditions (low temperature of heating water,
etc.). The particular information is displayed on the
control panel of the Climatix controller or web viewer of
the computer connected to the Climatix controller in the
OS-designated switchboard.

Icons

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Siemens room unit QAA822 Building Technologies

Function description

Switch the air conditioning unit on or off by pressing the button
OFF/ON.
When the air conditioning unit is switched on, the unit is in
condition before last switching off (Time Schedule, Economy or
Comfort). This condition is indicated by combination of icons 6, 7
and 8.
After switching off the air conditioning unit, the unit is either turned
off or it changes over into complementary mode of room frost
protection. This status is indicated by icon 5. In the default setting
of the complementary frost protection mode, the air conditioning
unit is turned off. Only if the room temperature falls below 5°C, the
air conditioning unit is switched on until the room temperature
higher than 5°C is reached. If the room temperature sensor is not
used, it can be substituted by a temperature sensor of the supplied
or exhausted air. The substitution is performed in configuration
parameters*).

After switching on the air conditioning unit by the OFF/ON button
and by pressing the button Mode the air conditioning unit switches
between the modes Time schedule, Economy and Comfort in
cycles. If no time schedule is set, the air conditioning unit switches
only between the modes Economy and Comfort. The currently
selected mode is indicated on the display by the combination of the
relevant icons 6, 7 and 8.

In the mode Economy the air conditioning unit is heating or cooling
so that the temperature required for this Economy mode is
reached. This mode is indicated on the display by the icon 7. The
default setting for this mode is 18°C.
The current temperature can be changed temporarily by the Plus
or Minus buttons. The temperature setting can be changed by the
Parameters button.
The fan speed is preset in the configuration parameters of this
mode*). The speed can be increased by the button Fans in six
steps up to the speed corresponding to the Comfort mode. This
setting is possible only if the configuration parameters are adjusted
for fan button control*).

In the mode Comfort the air conditioning unit is heating or cooling
so that the temperature required for this Comfort mode is reached.
This mode is indicated on the display by the icon 8. The default
setting for this mode is 22C.
The current temperature can be changed temporarily by the Plus
or Minus buttons. The temperature setting can be changed by the
Parameters button.
The fan speed is preset in the configuration parameters of this
mode*). The speed can be reduced by the button Fans in six steps
down to the speed corresponding to the Economy mode. This
setting is possible only if the configuration parameters are adjusted
for fan button control*).

Starting the air conditioning unit

Operating mode selection

Operating mode
Economy

Operating mode Comfort

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Siemens room unit QAA822 Building Technologies

Complementary modes are activated when the operating modes
Comfort and Economy are deactivated. Upon activation of the
complementary mode, the air conditioning unit is switched on so
that the quality of the air conditioning unit operation is improved
with regard to the conditioned room, i.e. to avoid unnecessary
cooling down or overeating of the conditioned room in the period
when the operating modes Economy and Comfort are
deactivated. The complementary modes can also function as
protection of the equipment and the conditioned room. These
complementary modes are activated in the configuration
parameters*).

The selection of Time Schedule is indicated on the display by the
icon 6. When you select this mode, so the controller switches
between the modes according to the time schedule adjusted. The
modes Economy and Comfort are again indicated by the icons 7
and 8 together with the icon 6. The switched-off modes
(complementary frost protection mode) are indicated by icon 6
only.
Temporary change of the modes in the time schedule can be
performed by the Occupancy button. The temporary change is
indicated by the flashing icon 6 and the icon of the active mode.
This temporary change will last until the next change of the mode
according to the time schedule.
The fan speed can be changed in the time schedule by the button
Fans in six steps within the speed ranges preset for the modes
Economy and Comfort, if the configuration parameters enable to
control the speed from the room unit.
Temperatures for the modes Economy and Comfort controlled
according to the time schedule cannot be changed from the room
unit as they are also controlled according to the time schedule or
configuration parameters*).
The time schedule can be programmed for the whole year. The
individual points of the time schedule are set on the control panel
of the Climatix controller or through the web viewer of the computer
connected to the Climatix controller in the OS-designated
switchboard. The time schedule setting is described in the
document „Detailed instruction for control through HMI Climatix“.

Description of individual functions

There are two ways to set up the temperatures required for the
Comfort mode outside the time schedule (only the icon 8 is on).
Temporary temperature setting, until the next change of mode, or

permanent temperature setting. The temporary temperature setting
is made by the buttons Plus or Minus when the Comfort mode is
active. To set the temperature permanently, press the button
Parameters, an image with the parameter Comf and the flashing
required temperature for the Comfort mode are displayed. Change
the temperature to the required value using the Plus or Minus
buttons. The setting is quitted by the Info button or automatically
after 30 seconds of inactivity.

Complementary modes

Time schedule

Setting the required
temperature for Comfort mode

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There are two ways to set up the temperatures required for the
Economy mode outside the time schedule (only the icon 7 is on).
Temporary temperature setting, until the next change of mode, or
permanent temperature setting. The temporary temperature setting is

made by the Plus or Minus buttons when the Economy mode is
active. To set the temperature permanently, press 2x the button
Parameters, an image with the parameter Econ and the flashing
required temperature for the Economy mode are displayed.
Change the temperature to the required value using the Plus or
Minus buttons. The setting is quitted by the Info button or
automatically after 30 seconds of inactivity

By pressing the Info button the image with the information values
from the connected temperature sensors, air humidity or quality
sensors occurs in dependence on the current configuration of the
air conditioning unit. These values are displayed in cycles and the
next value is displayed by repeated pressing the Info button.
The values below are available:

Zad – required temperature °C
Dod – temperature of the air supplied °C
Pro – room temperature °C
Ven – outdoor temperature °C
VoT –temperature of heating water on the return pipe °C
VoC – temperature of the cooling water on the return pipe °C
Spa – temperature of the waste gases of gas heating °C
Odv – temperature of exhaust air °C
Rek – temperature behind the recuperator °C
Chl – temperature behind the cooler °C
Ohr – temperature behind the heater °C
Vlh – air humidity %
Kval – air quality %

The information viewing is quitted by the Parameters button or
automatically after 30s of inactivity.

The fan speed is set by the repeated pressing the button Fans
provided that the configuration parameters*) are preset to enable
the control of the fan speed from the room unit. The fan speed can
be set in six steps indicated on the display within ranges preset for
the modes Economy and Comfort. The fan speed for the
individual modes is set in the configuration parameters*).
If the fan speed control from the room unit is not enabled, then the
icon 3 shows the fan speed determined by the Climatix controller
according to the current operating mode.
The fan speed setting is purposeful only if the fan motors are
controlled by the frequency converter or if EC motors are used.
The fan operation is indicated on the display by the icon 13, in case
of fan failure the icon is flashing.

Setting the required
temperature for Economy
mode

Information viewing

Fan speed

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Siemens room unit QAA822 Building Technologies

The button locking is used to protect the setting from the
unauthorized intervention by a non-instructed person. The lock is

activated by pressing and holding the button Occupancy (for
approx. 8s). The lock is indicated on the display by the notice
“LOCK“. In this condition, no changes of values or modes are
possible. When you press any button on the display, the notice
“LOCK“ occurs on the display. The buttons are unlocked again by
pressing and holding the button Occupancy. The unlocking is
indicated on the display by the notice “OPEN“.

The room unit can be reset by pressing and holding the button Fan
(approx.8s). Upon pressing this button, the display goes out and new

initialization is started and the communication is resumed.

The correct system time setting is necessary for the correct function
of the air conditioning unit according to the time schedule. The

system time setting is activated by pressing and holding the button
Parameters. The time can be changed by the Plus or Minus
buttons and confirmed by the Info button. The setting sequence
of the values of the system time changes in cycles and is as
follows:

Hour → minutes→ time format →year→ month → day →
hour…

The setting is quitted by pressing the button Parameters or after
inactivity exceeding 30s.
The system time can also be set on the control panel of the
Climatic controller or through the web viewer of the computer
connected to the Climatix controller in the OS-designated
switchboard. The system time setting is described in the document
„Detailed instructions for control through HMI Climatix“.

The parameters of the Climatix controller are factory-preset so that
communication is established as soon as the room unit is connected

to the controller. The parameter initialization is indicated on the
display by the letter P-. The communication parameters can be set
both on the Climatix controller and the room unit. When two room
units are used, it is necessary to change the parameter 007 in one
of the room units. The access code is „0000“ and is preset. The
communication parameter can be changed as follows:
Press the buttons OFF/ON, Mode, Plus and Minus at the same
time to activate the entry of the four-digit access code. The cursor
is blinking at the first position and by repeated pressing the Mode
button the first flashing parameter 001 is displayed. Using the Plus
and Minus buttons select the flashing parameter to be changed
and confirm the setting by the Mode button. The cursor jumps to
the value below, which can be also changed by Plus and Minus
buttons. The setting is again confirmed by the Mode button and the
setting of all communication parameters is quitted by repeated
pressing the OFF/ON button.

Button locking

Room unit reset

System time

Communication

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Number

Parameter description

001

KNX communication

Communication is functioning -OK
Communication is not functioning -NG

002

Individual address - (X.1.1)

The range is 0 to 15. The preset value is 0.

003

Individual address - (1.X.1)
The range is 0 to 15. The preset value is 1.

004

Individual address - (1.1.X)

The range is 1 to 252. The preset value is 1.

005

Byte address - (X.1.1)

The range is 1 to 126. The preset value is 5.

006

Room address – (1.X.1)

The range is 1 to 14. The preset value is 1.

007

Zone address - (1.1.X)

The range is 1 to 15. The preset value is 1.

008

Enable the network failure detection

Enables or disables the detection of the
communication network failure. The failure is
indicated by a blinking notice “NET”.

009

Automatic assignment of the individual
address

0 – the room unit uses the defined fixed individual
address.
1 – the room unit generates automatically the
individual addresses.

Note*)

The configuration parameters are set on the control panel of the
Climatix controller or through the web viewer of the computer
connected to the Climatix controller in the OS-designated
switchboard. The parameter setting is described in the document
„Detailed instructions for control through HMI Climatix“.

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Siemens room unit QAA822 Building Technologies

Designing

The room unit is supplied from the connected controller through 2­wire interface (low voltage, SELV).
The room unit must be connected to the Climatix controller by two­wire twisted pair cable. It is possible to use unshielded conductors.

Mounting instructions

 The device is suitable for semi-flush mounting with a recessed

installation box.

 The device must not be mounted into recesses, shelves, behind

curtains or doors or above or near the direct heat sources.

 Avoid direct sun and draught.
 The conduit must be sealed on the device side as an air stream

along the conduit can affect the sensor readings.

 The permissible ambient conditions for mounting the device must

be observed.

 The mounting instructions are enclosed with the device.

Installation

Local installation regulations must be observed.

The equipment is not protected against accidental connection to
AC 230 V.

Commissioning

After interruption of the connection to the 2-wire interface, the
communication is re-established only if the room units send a
query about the controller address.
For QAA07, the time cycle for querying is: 250 ms

Step

Function

Description

1

LCD test

All display segments are displayed for
approx. 2 seconds

2

Identification of
the connected
controller

The room unit establishes contact with
the connected Climatix controller

3

Ready for
operation

Disposal

The device contains electrical and electronic components and
must not be disposed as domestic waste.

The valid local legal regulations are to be observed!

STOP

Warning

Device connection

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Siemens room unit QAA822 Building Technologies

Technical data

Supply voltage

Operating voltage
the room unit is supplied from the
connected controller via 2-wire
interface (SELV, extra low voltage
according to HD384)

DC 12...15 V

Power consumption (from the
controller)

Max. 0.22 VA

Operating conditions

Temperature sensor

Measuring element

NTC resistance sensor

Measuring range

0...40 °C

Response

 10 min

Accuracy (5 … 30 °C)

 1.0 K

Accuracy (25 °C)

 0.5 K

Display

Type

LCD

Display function

- Requirement adjustment

- Operating mode selection

- Manually selected fan speed

- Control sequence

- Time and weekday

- Parameter setting (only when selected)

Interface

Type of interface between the
controller and the room unit

2-wire interface connection

Voltage signal, logic 0

< 5 V

Voltage signal, logic 1

> 7 V

Maximum number of controllers

8

Baud rate

4.8 kbps

Cable connection

Connection terminals (screw terminals)

Solid or stranded conductors

0.8…2.5 mm2

Cable type

2-wire, twisted pair, unshielded

Max. distance between two units

75 m
Max. total busbar length

125 m

Degree of cover

protection

Protection according to EN 60529

IP 30

Protection class

Protection class

III

Ambient conditions

IEC 721-3

Operation

Transport

Ambient air

class 3K3

class 2K3

Temperature

+ 5...40 °C

– 25...70 °C

Humidity

< 85% r.h.

< 93% r.h.

Mechanical conditions

class 3M1

class 2M2

Industry standards

Electromagnetic compatibility

Immunity for residential, commercial
and light-industrial environments

EN 61000-6-1:2001

Emission standard for residential,
commercial and light-industrial
environments

EN 61000-6-3:2001+A11:2004

CE conformity

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Siemens room unit QAA822 Building Technologies

Make yourself familiar with the
requirements for CE marking as
defined in the EMC directive

2004/108/EC

Dimensions

See: “Dimensions”

Colour

Front cover, rear cover, buttons

RAL9003 – white

Weight

Without packaging

0.12 kg

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Siemens room unit QAA822 Building Technologies

Electric connection

Terminal layout:

Dimensions (units: mm)

Connection of the room unit to the Climatix controller

Room unit

1

Room unit

2

Climatix

controller

Process Bus

2-wire interface, power supply

device power supply, data (positive)
device power supply, data (negative)

Negative 

Positive 

3982Z07

3982M01

3982M02