Siemens QAA73.210 User manual

s
Room Unit for Boiler Control
With OpenTherm Interface
User manual
QAA73.210
Edition 1.1
Device series A
CE1U2283en
2015-09-16 Building Technologies

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Siemens Room Unit for Boiler Control CE1U2283en
Building Technologies 2015-09-16
Siemens Switzerland Ltd
Building Technologies Division
International Headquarters
Gubelstrasse 22
6301 Zug
Switzerland
Tel. [phone]
www.siemens.com/buildingtechnologies
© Siemens Switzerland Ltd, 2010
Subject to change

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Building Technologies Table of contents 2015-09-16
Table of contents
1Overview ..............................................................................................5
1.1 Features ................................................................................................5
1.2 Product liability ......................................................................................6
1.3 Disposal ................................................................................................6
2Mounting and Installation....................................................................6
2.1 Engineering ...........................................................................................6
2.2 Installation .............................................................................................7
2.3 Electrical installation ..............................................................................8
3Commissioning....................................................................................9
3.1 Operational faults...................................................................................9
4Handling.............................................................................................10
4.1 Operation.............................................................................................10
4.2 Programming room units parameters ...................................................15
4.2.1 User levels...........................................................................................15
4.2.2 Overview of settings.............................................................................16
4.3 Programming Siemens BMU parameters .............................................18
5Description of room unit settings .....................................................19
5.1 Time and day (TIME) ...........................................................................19
5.2 Time switch program (TSPHC, TSPCC, TSPHW).................................19
5.2.1 Day selection.......................................................................................19
5.2.2 Switching times....................................................................................20
5.3 Heating circuit (HEAT)..........................................................................20
5.4 Cooling circuit (COOL).........................................................................27
5.5 Domestic hot water (DHW)...................................................................27
5.6 Configuration (CONF)..........................................................................29
6Functions ...........................................................................................30
6.1 Types of compensation ........................................................................30
6.1.1 Weather compensation ........................................................................30
6.1.2 Weather compensation with room influence .........................................30
6.1.3 Room compensation............................................................................31
6.1.4 Fix flow temperature setpoint ...............................................................31
7Dimensions ........................................................................................32
8Technical data....................................................................................33
Index ............................................................................................................34

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Building Technologies Table of contents 2015-09-16

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Building Technologies Overview 2015-09-16
1 Overview
The QAA73.210 is a digital multi-functional room unit for one or 1 heating circuits
and d.h.w. control.
Boiler control delivers the outside temperature and other information to the
QAA73.210 room unit via the OpenTherm communication interface. Based on the
outside temperature, the room temperature and a number of other parameters, the
interface calculates the required flow temperature setpoints for the heating circuits
and transmits them to the boiler control. In addition, the d.h.w. temperature
setpoint is transmitted to the boiler control.
The optimization functions offer energy savings without sacrificing comfort. The
room sensor required for that purpose is integrated in the unit.
1.1 Features
·Operating sections (operating levels) based on ergonomic and functional
considerations
·Clear assignment of basic functions:
·Operating mode, setpoint adjustment and occupancy button
·A number of actual values can be accessed via the Info button
·Additional functions can be programmed via programming mode
·Every setting or change is displayed and thus acknowledged
·Heating circuit program with up to 4 heating periods per day can be selected on
an individual basis
·Cooling circuit program with up to 4 heating periods per day can be selected on
an individual basis
·D.h.w. program with up to 4 heating periods per week can be selected on an
individual basis
·Holiday function
·Special mode for setting the parameters of Siemens boiler control systems
·Weather-compensated flow temperature control while giving consideration to the
building’s thermal dynamics
·Weather-compensated flow temperature control with room compensation
·Pure room temperature control
·Effect of room temperature deviation can be adjusted
·ECO functions (24-hour limit switch, automatic summer / winter changeover)
·Room temperature switching differential for limiting the room temperature
·Adjustable maximum limitation of the flow temperature (especially in connection
with floor heating systems)
·Frost protection for the building
·D.h.w. control with release and preselection of setpoint for the boiler controller
·Legionella function
·Integrated clock with a reserve of at least 12 hours
·Communication with the boiler control via OpenTherm interface
·Power supply via OpenTherm bus
Brief description
Operating functions
Functions
Other features

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Building Technologies Mounting and Installation 2015-09-16
1.2 Product liability
·The products may only be used in building services plant and applications as
described above
·When using the products, all requirements specified under "Technical data"
must be observed
·The local regulations for electrical installation must be complied with
1.3 Disposal
The device is classified as waste electronic equipment in terms of the European
Directive 2002/96/EC (WEEE) and should not be disposed of as unsorted muni-
cipal waste.
The relevant national legal rules must be adhered to.
Regarding disposal, use the systems setup for collecting electronic waste.
Observe all local and applicable laws.
2 Mounting and Installation
2.1 Engineering
·In the main living room or reference room
·The place of installation should be chosen so that the sensor can capture the
room temperature as accurately as possible, without being affected by direct
solar radiation or other heating or cooling sources.
·Mounting height is about 1.5 meters above the floor
·The unit can be fitted to most commercially available recessed conduit boxes or
directly on the wall.
Mounting location

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Building Technologies Mounting and Installation 2015-09-16
2.2 Installation
·Wall
·Boiler control panel
·The controller may not be exposed to dripping water
·Permissible ambient temperature: 0...50 °C
Wall mounting
Step 1 Open the unit at the bottom and remove the
base from the housing front.
Step 2 Connect the bus cable to the screw
teminals.
Step 3 Fit the base to the wall with the help of
screws.
Step 4 Engage the housing front at the top of the
base and close the unit to the bottom.
Mounting conditions

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2.3 Electrical installation
The local regulations for electrical installations must be complied with.
1
2
COA
COB
OpenTherm terminal A (interchangeable)
OpenTherm terminal B (interchangeable)
23 mA max
Regulations for
installation
Connection diagram
1
2

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Building Technologies Commissioning 2015-09-16
3 Commissioning
Prior to commissioning the controller, make the following checks:
·Correct mounting
·Correct connection to OpenTherm bus
·Enduser parameters are set as required
·Heating engineer parameters are set in compliance with plant requirements
At first power up or after a long off period (no power supply), "CLOW" is displayed
on the LCD for some minutes.
During this first period it is not possible to visualize or change parameters, the
other functions are running. After some minutes a minimum back-up time is
reached and the full functionality is available
3.1 Operational faults
No display on the room unit:
Is the heating plant's main switch turned on?
·Are the fuses in order?
·Check the wiring
·Boiler controller
Does boiler control really have to operate?
·Press boiler control’s lock-out reset button
·Check wiring and fuse of boiler control
·Check the communication link to boiler control
The room temperature does not agree with the required temperature level:
·Does the room temperature setpoint agree with the required temperature level?
·Is the required operating mode indicated?
·Are weekday, time of day and the displayed heating program correct?
(Info displays)
·Has the heating curve slope been correctly set?
·Check wiring of outside sensor
·Has the "Nominal room temperature setpoint" with the "Parallel displacement of
the heating curve" been calibrated based on the effective room temperature?
·Check boiler control
D.h.w. is not being heated:
·Has the button for d.h.w. heating been pressed?
·Check setpoint of the d.h.w. temperature
·Check d.h.w. function of boiler control
Prerequisites
Room unit
Boiler control does not
switch on
Room temperature
D.h.w.

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Building Technologies Handling 2015-09-16
4 Handling
4.1 Operation







Operating element Function
Heating circuit operating
mode button and associated
symbols
Operating mode changes to:
Automatic operation
Continuous operation
Protection
Temporary function
D.h.w. operating mode button
with associated symbol
D.h.w. heating ON / OFF
Setpoint buttons Heating Adjustment of room temperature setpoint
Setpoint buttons D.H.W. Adjustment of D.H.W. temperature setpoint
Info button Change of info display
Occupancy button Changeover of operating level
LCD Display of data and operating mode
DHW mode ON Space heating mode ON
Boiler operation for DHW heat
demand
Boiler operation for heating circuit
heat demand
Maintenance message Automatic operation
Holiday function Temporary function
Heating to Comfort setpoint Continuous operation
Heating to Reduced setpoint Protection
Boiler on
Operating elements
Legend
Display icons

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Display of all symbols and segments.
Selection of space heating mode
This setting 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 controls the room temperature according to the time program.
Characteristics 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 (ECO functions) active
Continuous operation maintains the room temperature at the selected operating
level.
Characteristics of continuous operation:
·Heating mode with no time program
·Protective functions active
·Automatic summer / winter changeover and 24-hour heating limit (ECO
functions)
inactive in the case of continuous operation with Comfort setpoint
When using Protection mode, the heating system is off, but it remains protected
against frost (frost protection temperature) provided there is no power failure.
Characteristics of Protection:
·Heating off
·Temperature according to frost protection
·Protective functions active
·Automatic 24-hour heating limit (ECO functions) active
Cooling mode controls the room temperature in accordance with the time program.
Characteristics of cooling mode:
·Manual cooling mode
·Cooling mode based on time program
·Temperature setpoint based on "Comfort setpoint" or "Reduced setpoint"
Display
Automatic mode
Continuous operation
Protection
Cooling mode
(if activated)

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- / +
- / +
Selecting the DHW heating mode
The button is used to switch DHW heating mode on and off.
·On
The DHW is heated according to the selected switching program. A setpoint is
generated based on the demand for heat and the settings and passed on to the
BMU.
·Off
No DHW heating
This function allows to set a temporary setpoint.
Triggering is effected by keeping the DHW operating mode button for at least 3
seconds.
The setpoint remins active during 55 minutes -> tap symbol is blinking.
·To disactivate the function before the end of the 55 min press DHW button
·The d.h.w. operating mode and the different d.h.w. functions are active only if
supported by boiler control and if communicated in OpenTherm Plus mode
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.
Adjusting the room temperature setpoint "tAMB"
Push the + /– buttons to increase or decrease the Comfort setpoint.
The Reduced setpoint can be adjusted in programming level.
Adjusting the DHW temperature setpoint "HW SP"
Push the + /– buttons to increase or decrease the Nominal setpoint.
The Reduced setpoint can be adjusted in programming level.
Presence button
If you do not use the rooms for a certain period of time, you can
press the presence button to reduce the room temperature,
thus saving heating energy.
When the rooms are occupied again, press again the presence button to resume
heating operation.
·The presence button is only active in automatic operation
·The current selection is active until the next switching action according to the
heating program takes place
During the holiday period, the heating circuit operating level changes
to frost protection.
The setting range is between 10 minutes and 45 days.
·This function is only active in automatic mode.
·The function can be cancelled by pressing any button
DHW heating mode
DHW shower
Notes
Caution

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i
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:
Description Name Unit
- Boiler temperature BOILR °C
- Water pressure P BAR Bar
- Outside temperature EXT T °C
- Domestic hot water temperature DHW °C
- Domestic hot water temperature 2 DHW 2 °C
- Domestic hot water flow rate DHWFR l/min
- Relative boiler power PWR %
- Fan speed S FAN Rpm
- Exhaust temperature T EXH °C
- Return temperature RETUR °C
- Calculated flow temperature setpoint CH SP °C
During boiler operation it is
possible to see the actual
boiler modulation level on 4
different levels.
The room unit indicates faults that may have occurred in the unit itself or in the
system
If a fault is indicated 'ERROR' and the error code followed by the letter 'E' are
visualized in the display.
These faults cannot be reset. They will be cleared only when rectified.
Error code Description
60 Room sensor
88 Communication
95 Clock
127 Legionella setpoint not reached 1)
1) Can be reset by pressing OK button
Depending on the type of boiler control, the room unit also displays other error
codes. For detailed information, please refer to the technical documentation of the
boiler controller used.
Indication of faults
Other fault displays

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During boiler lockout, 'ERROR'.and '>>>OK' are blinking alternatively and the error
code followed by the letter 'E' are visualized in the display.
For resetting the BMU press the OK button
If the reset was successful 'RESET'followed by '>>>OK' are visualized in the
display.
Is activated / deactivated on the BMU
Boiler temperature is visualized on the QAA
Is activated / deactivated on the BMU
Modulation level can be set by up down buttons
Boiler lockout
Chimney sweep
Controller stop
2
seconds
2 second
s

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4.2 Programming room units parameters
Button Description
1Press the Info button for at least 3 seconds.
This will take you directly to the programming level
"Enduser".
2The display shows a number of operating pages.
Press the line selection buttons to select the required
operating page.
To confirm, press OK.
3The display shows a number of operating pages.
Press the line selection buttons to select the required
operating line.
To confirm, press OK.
4The display shows the value flashing.
Press the line selection buttons until value is correct.
To confirm, press OK
5By pressing the ESC button, you come back to operating
page selection.
6By pressing the ESC button, you leave the programming
level.
If no button is pressed for about 1 minutes, the room unit will automatically leave
programming level.
4.2.1 User levels
The user levels only allow authorized user groups to make settings. To reach the
required user level, proceed as follows:
Buttons Explanation
1Press the Info button for at least 3 seconds.
This will take you directly to the programming level
"Enduser".
2Press the Info button for at least 3 seconds.
This will take you to the user level selection.
3You are now given a choice of user levels.
Press the line selection buttons to select the required user
level.
To confirm, press OK. You are now on the required user level.
The following user levels are available
USR = End user
INST = Heating engineer
OEM = OEM
To reach the OEM level, the relevant code must be entered.
Setting
Note

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4.2.2 Overview of settings
The table shows all available settings up to the heating engineer level. However,
certain operating lines may be hidden, depending on the type of unit.
E = End user, F = Heating engineer, O = OEM
Operating
line
Operating
level
Function
Factory
setting
Range
Unit
TIME
hh:mm E Hours/minutes 00:00…23:59 hh:mm
DAY E Week day 1…7
TSPHC
MO…SU E Day selection MO 1…7
ON 1 E 1st phase on 06:00 00:00…23:59 hh:mm
OF 1 E 1st phase off 22:00 00:00…23:59 hh:mm
ON 2 E 2st phase on 24:00 00:00…23:59 hh:mm
OF 2 E 2st phase off 24:00 00:00…23:59 hh:mm
ON 3 E 3st phase on 24:00 00:00…23:59 hh:mm
OF 3 E 3st phase off 24:00 00:00…23:59 hh:mm
ON 4 E 4st phase on 24:00 00:00…23:59 hh:mm
OF 4 E 4st phase off 24:00 00:00…23:59 hh:mm
TSPCC 1)
MO…SU E Day selection MO 1…7
ON 1 E 1st phase on 10:00 00:00…23:59 hh:mm
OF 1 E 1st phase off 18:00 00:00…23:59 hh:mm
ON 2 E 2st phase on 24:00 00:00…23:59 hh:mm
OF 2 E 2st phase off 24:00 00:00…23:59 hh:mm
ON 3 E 3st phase on 24:00 00:00…23:59 hh:mm
OF 3 E 3st phase off 24:00 00:00…23:59 hh:mm
ON 4 E 4st phase on 24:00 00:00…23:59 hh:mm
OF 4 E 4st phase off 24:00 00:00…23:59 hh:mm
TSPHW
ON 1 E 1st phase on 06:00 00:00…23:59 hh:mm
OF 1 E 1st phase off 22:00 00:00…23:59 hh:mm
ON 2 E 2st phase on 24:00 00:00…23:59 hh:mm
OF 2 E 2st phase off 24:00 00:00…23:59 hh:mm
ON 3 E 3st phase on 24:00 00:00…23:59 hh:mm
OF 3 E 3st phase off 24:00 00:00…23:59 hh:mm
ON 4 E 4st phase on 24:00 00:00…23:59 hh:mm
OF 4 E 4st phase off 24:00 00:00…23:59 hh:mm
HEAT
COMFR E Comfort setpoint 20 5…35 °C
ECONM E Reduced setpoint 18 5…35 °C
NOFRS E Frost protection setpoint 5 5…35 °C
HC SL O Flow temp setpoint manual 80 20…80 °C
HC MX F Flow temp setpoint max OEM 80 20…80 °C
HC MN F Flow temp setpoint min 20 20…80 °C
SLOPE F Heating curve slope 1,5 0,1…4
SUWI F Summer/winter heating limit 18 8…30 °C

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Operating
line
Operating
level
Function
Factory
setting
Range
Unit
ECO24 F 24-hour heating limit 0 -10…+10 °C
KORR F Room influence 4 0…20
BUILD F Time constant building 3 0...10
AMBON F Room influence ON/OFF
0 = OFF, 1 = ON
10-1
QSETB F Quick setback ON/OFF
0 = OFF, 1 = ON
10-1
SDR F Room temp limitation 0,5 0,5...4,0 °C
HC2SR
2)
FRoom temperature setpoint for
heating circuit 2
20 5...35 °C
HC2SF
2)
F Flow temperature setpoint heating
circuit 2
80 20...80 °C
COOL 1)
COMFR E Comfort setpoint 22 5...30 °C
ECONM E Reduced setpoint 24 5...30 °C
DHW
COMFR F Nominal setpoint 55 35...70 °C
ECONM F Reduced setpoint 35 35...70 °C
SHOWR O Shower function setpoint 40 35...70 °C
HWMX F DHW setpoint max 65 35...70 °C
HW MN F DHW setpoint min 35 35...70 °C
L FCT F Legionella function
0 = OFF, 1 = ON
0 0...2
LTIME F Legionella function dwelling time 1 1...180 Min
L TEMP F Setpoint of legionella function 65 35...70 °C
CONF
HW PR F DHW program 1 0...2
COOL F COOLING ON/OFF
0 = OFF, 1 = ON
00-1
RESET O Reset to default parameters
0 = NO, 1 = YES
00-1
1) This menu is only visible if parameter COOL is ON
2) Only active when supported by BMU

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4.3 Programming Siemens BMU parameters
This functionallity is available only on some BMU’s.
Buttons Explanation
1Press the line selection buttons for at least 3 seconds.
This will take you directly to the programming level "Enduser".
2The display shows a number of operating pages.
Press the line selection buttons to select the required
operating page.
To confirm, press OK.
3The display shows a number of operating pages.
Press the line selection buttons to select the required
operating line.
To confirm, press OK.
4The display shows the value flashing.
Press the line selection buttons until value is correct.
To confirm, press OK
5By pressing the ESC button, you come back to operating
page selection.
6By pressing the ESC button, you leave the programming
level.
If no button is pressed for about 1 minutes, the room unit will automatically leave
programming level.
The user levels only allow authorized user groups to make settings. To reach the
required user level, proceed as follows:
Buttons Explanation
1Press the line selection buttons for at least 3 seconds.
This will take you directly to the programming level "Enduser".
2Press the Info button for at least 3 seconds.
This will take you to the user level selection.
3You are now given a choice of user levels.
Press the line selection buttons to select the required user
level.
To confirm, press OK. You are now on the required user level.
The following user levels are available
USR = End user
INST = Heating engineer
OEM = OEM
To reach the OEM level, the relevant code must be entered.
For detailed information, please refer to the technical documentation of the boiler
controller used.
Setting
Note
User levels
Note

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Building Technologies Description of room unit settings 2015-09-16
5 Description of room unit settings
5.1 Time and day (TIME)
To ensure proper functioning of the heating program, the time switch with the time
of day and the weekday must be correctly set.
Time of day and weekday are important, ensuring that the heating program, the
cooling program and the d.h.w. programoperate as required.
5.2 Time switch program (TSPHC, TSPCC)
5.2.1 Day selection
With this setting, you select the weekdays or the day block for which the switching
times of the time switch program apply.
·This setting must be made before the switching times are entered!
·For every day on which other switching times shall apply, the preselection of the
individual day with subsequent entry of the switching times must be repeated
Entry of the switching times on lines 'ON 1' through 'OFF 4' is identical for every
day from Monday through Sunday
Example of a time switch program valid for all weekdays
Mo
...
Su
0246810 12 14 16 18 20 22 24 h
2283Z18
Entry of the switching times on lines 'ON 1' through 'OF 4', are only entered for the
individual day selected here
Example of a 7-day time switch program:
Mo
Tu
We
Th
Fr
Sa
Su
0 2 4 6 8 10 12 14 16 18 20 22 24 h
2283Z19
Lines
(hh:mm, DAY)
Lines
(MO…SU)
Entry of 7-day block
Entry of individual days

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Building Technologies Description of room unit settings 2015-09-16
First, choose the 7-day block to enter the switching times required for the majority
of days; then, select the individual days to make the required adjustments.
5.2.2 Switching times
This setting defines the switching times for space heating and d.h.w. heating. The
temperature setpoints of the 2 heating circuits and the d.h.w. usage times change
at the times set.
First, select the weekday for which the switching times shall be entered!
5.3 Heating circuit (HEAT)
In comfort operation, the comfort room temperature setpoint is maintained.
The comfort room temperature setpoint is adjusted with the buttons for the comfort
temperature, which are located on the controller front for direct access by the user.
When a button is pressed, the current room temperature setpoint is displayed and
– when pressed further – readjusted.
0 2 4 6 8 10 12 14 16 18 20 22 24 35 °C
2283 Z07
6
5
Room temperature setpoint setting ranges
5 Reduced room temperature setpoint (ECONM)
6 Frost protection setpoint of the room temperature (NOFRS)
When the comfort room temperature setpoint is active, the rooms will be heated
according to the adjustment made with the setpoint buttons.
The adjustment made with the buttons is only active in automatic and continuous
operation.
The comfort phases depend on the settings made on lines ‘ON 1’ through ‘OF 4’.
Mo
...
Su
0246810 12 14 16 18 20 22 24 h
2283Z08
Comfort temperature and reduced temperature phases for heating circuit.
Tip
Lines
(ON 1 ...OF 4)
Important
Comfort room
temperature setpoint
(COMFR)
Example