Siemens Climatix POL822 User manual

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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 two-

wire 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

ON/OFF

Button for switching on or off the air conditioning

unit.

Occupancy

The button enables to switch on/off temporarily the

occupancy mode in the time programme.

Parameters

The button enables to change the required

temperature values or to quit the viewing of the

actual temperatures.



Minus

The button for changing the set-point of the selected

parameter or temperature.



Plus

The button for changing the set-point of the selected

parameter or temperature.

Info

By pressing the button the viewing of current

temperatures is activated or the possibility to change

the required temperatures is quitted.

Fan

The button is used to set the fan speed within the

pre-set fan speeds for the modes Economy and

Comfort.

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

Temperature in °C (resolution 0.1 °C).

The temperature can be adjusted with a resolution of

0.5°C.

Time

Fan speed. Number of stages

Weekday indicator in the lower part of the display.

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).

Automatic change of air conditioning unit modes

according to the time schedule. It is not used, if no time

schedule is available.

Economy mode - the air conditioning unit is on.

Comfort mode - the air conditioning unit is on.

Cooling is on; the flashing icon indicates a cooling

failure.

Heating is on; the flashing icon indicates a heating

failure.

Humidifying is on; the flashing icon indicates a

humidifying failure.

Complementary mode is on; the flashing icon indicates

the complementary mode failure.

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

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.

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.

Indication of non-standard operation or status of the air

conditioning unit. The lighting icon indicates a non-

standard 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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Siemens room unit QAA822 Building Technologies

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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Siemens room unit QAA822 Building Technologies

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 2-

wire interface (low voltage, SELV).

The room unit must be connected to the Climatix controller by two-

wire 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

LCD test

All display segments are displayed for

approx. 2 seconds

Identification of

the connected

controller

The room unit establishes contact with

the connected Climatix controller

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

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

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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