Atag MadQ/2 User manual

8G.51.10.00/10.05
INSTALLATION MANUAL
MadQ/2
MadQ/2 Controller

GB English

GB-3
Contents
General safety instructions..............................................................................GB-4
Safety measures for EMC - compliant installation.........................................GB-4
Installation of the control unit .........................................................................GB-6
Mounting instructions .................................................................................... GB-6
Electrical installation...................................................................................... GB-6
Electrical connection ..................................................................................... GB-7
Installation set MadQ .................................................................................... GB-8
Wall-mounting case .......................................................................................GB-9
Assembly and electric installation .................................................................. GB-9
Electrical connections ................................................................................. GB-10
Thermostats (for remote- control) ..............................................................GB-11
Mounting Location....................................................................................... GB-11
Mounting instructions .................................................................................. GB-11
Electrical connection ................................................................................... GB-12
Electrical connection at control unit ............................................................ GB-12
Data bus allocation...................................................................................... GB-12
Accessories ..................................................................................................GB-14
Outdoor sensor ........................................................................................... GB-14
Tank sensor ................................................................................................ GB-15
Flow sensor................................................................................................. GB-15
Resistance values of sensors depending on temperature.......................... GB-16
Commissioning the control unit .................................................................GB-17
Code input................................................................................................... GB-17
Automatic setting function..........................................................................GB-18
Alarm messages...........................................................................................GB-19
Plant information..........................................................................................GB-20
Parameter synoptic ......................................................................................GB-23
Overview of installer parameters and adjustment options .......................... GB-25
Appendix ................................................................................................................ I
GB

GB-4
General safety instructions
All electrical connections and safety
measures have to be carried out by a
specialist in due consideration of valid
standards and VDE-guidelines as well as
the local regulations.
The electrical connection must be a
permanent connection in accordance with
VDE 0100).
The electrical connection must be in
compliance with the specifications of the
ATAG boiler.
Important!
Deenergize the boiler or wall-mounting
case before opening.
Unprofessional plugging attempts under
voltage may damage the control or
cause dangerous electrical shocks.
Safety measures for EMC -
compliant installation
1. Cables with mains voltage must be
generally routed separately from
sensor lines and data bus cables.
A minimum distance of 2 cm between the
lines is mandatory. Crossing of lines is
permitted.
2. For control units with their own mains
connections, ensure the power-,
sensor- and bus lines are routed
separately. If cable ducts are in use,
they must be equipped with separators.
3. When installing the control units or
thermostats, a minimum distance of 40
cm must be maintained to other
electrical utilities with electromagnetic
emissions, such as radio`s, motors,
transformers, dimmer switches,
microwave ovens and televisions,
loudspeakers, computers, radiophones
etc.
4. A minimum distance of 40 cm between
the thermostats and control units is
mandatory. Several control units in a
data bus connection may be installed
directly side by side.
Fig. 1: Minimum distances during electrical
installation
Fig. 2: Minimum distance to other electric
instruments
40 cm
15 cm
Mains
230 V~
Data bus line 12 V
2c
m
GB

GB-5
5. The main connection for the heating
system (i.e. boiler control panel -
control unit) must be designed as an
independent electrical circuit. There
should no fluorescent lamps or other
machines, which may be sources of
disturbance, be connected and even
the possibility of such connections
should be ruled out.
6. The outside sensor may not be
installed close to transmitting or
receiving equipment (on garage walls
close to receivers for radio-controlled
garage door openers, amateur radio
antennas, radio controlled alert
systems or close to large scale radio
transmission equipment).
Recommended cable cross-sections
and maximum permitted cable lengths:
For all cables with mains voltage (power
supply, burner, pumps, actuators)
1.5 mm2
Maximum length:
Unlimited cable length within house
installation.
All low voltage cables (sensors, external
switches due to demands via contact
points, modem connection cables,
analogue signal cables etc.): 0.5 mm2
Maximum length:
100 m (duplicate wire)
Longer connecting cables should be
avoided in order to reduce the risk of
interfering radiation.
Data bus line: 0.6 mm Ø
Maximum length:
50 m (duplicate wire)
Longer connecting cables should be
avoided in order to reduce the risk of
interfering radiation.
Fuse 16 A
Heating room emergency switch
Only connect heating
room lighting and
sockets on separate
power circuit!
Thermostat
(
s
)
ATAG - burner
Fig. 3: Electric routing in heating room
GB

GB-6
Installation of the control unit
Mounting instructions
Parts necessary for the installation into the
boiler control unit:
- MadQ control unit 23BC or 233BVVC
- MadQ installation set for 23BC or
233BVVC
Parts necessary for the installation into the
wall-mounting case:
- MadQ control unit 23BC or 233BVVC
- MadQ wall-mounting case
All control units can be built into the
corresponding ATAG boiler control unit or
wall-mounting case after the electrical
connections have been made.
They should be fastened with quick-
clamping devices (1) by turning them
clockwise.
The removal is done in reverse order. See
the assembly instructions that belong to
the MadQ installation set and the MadQ
wall-mounting case.
Electrical installation
The electrical connection and the further
routing to the control units is done on the
back of the unit with the four
terminal strips X1, X2, X3 and X4 in the
boiler control unit, corresponding to the
designations in the coloured terminal
fields.
The routing in the wall-mounting case is
prepared in the factory.
All terminal clamps inside the blue
fields (X1) carry low voltage and may
not get into contact with the mains
voltage! Ignoring this will inevitably
lead to the destruction of the control
unit and to the loss of the basis for
warranty claims!
The terminal clamps in the red fields
(X2...X4), depending on the operation
mode, generally carry mains voltage.
Terminal occupation, see next page.
Note:
When routing the unit, ensure that sensor-
, data bus- and mains lines are routed
separately. Mutual routing inside one
cable is prohibited. Sensor- and data bus
lines may not be routed with mains lines
that supply electrical units that are not
interference suppressed according to EN
60555-2.
230 V~
GB
1

GB-7
Electrical connection
Mains connection
1 - Do not use
2 - Do not use
3 - Unmixed circuit pump
4 - Do not use
5 - Charge pump
6 - L 1 / 230 V
7 - Mixing valve 1 OPEN
8 - Mixing valve 1 CLOS
9 - Mixed circuit pump 1
10 - Variable output 1
11 - Variable output 2
12 - L 1 / 230 V
13 - Mixing valve 2 OPEN
14 - Mixing valve 2 CLOS
15 - Mixed circuit pump 2
16 - Do not use
17 - Do not use
18 - Do not use
19 - Do not use
20 - Do not use
21 - N / 230 V
22 - L 1 / 230 V
Sensor-/data bus connection
23 - GND for sensor
24 - Data bus connection A
25 - Data bus connection B
26 - Outside sensor ARV20 Mad
27 - Do not use
28 - Tank sensor
29 - Flow sensor mixed circuit 1
30 - Variable input 1
31 - Variable input 2
32 - Variable input 3
33 - Flow sensor mixed circuit 2
34 - Do not use
35 - Do not use
36 - Impulse input
37 - Boiler control unit-data bus A
38 - Boiler control unit-data bus B
GND for sensor
}Mains connection
GB
When building in a MadQ controller into a boiler a data bus connection is made between the
boiler and the controller through the cable loom. In case of a Cascade installation the
positions 20 and 21 of the connection block of each boiler have to be connected to each
other. Adjust Parameter 89 of each boiler to their individual bus address: Boiler 1 = 00, boiler
2 = 01, etc. See also example 17 on page XXXIV.

GB-8
Installation set MadQ
GB
Cable harness for the installation of a control unit in the boiler control unit
MC-1 MC-2
MC-1 MC-2
Sensor Sensor
DHW
VO1 VO2
USPSPS
OS
ARV12

GB-9
Wall-mounting case
Application:
The wall-mounting case serves as a case
for the control unit.
Design
The wall-mounting case is only suitable for
use as a case and for the connections of
the control unit.
The control unit is ready for use after it
has been fastened to the motherboard
and after the output cables have been
routed.
Assembly and electric installation
1- Push out the cable inlets at the pre-
stamped locations at the top or bottom
according to the size and number of
the cable ducts.
Note:
If no cable duct is used, a suitable
strain relief for the cables must be
ensured during installation.
2- Place locking bolts (1) horizontally and
pull off the connection covers (2) to
one side.
3- Install the wall-mounting case with the
supplied bolts and dowel pins on a flat
surface without distorting it. Use the
enclosed drilling jig.
4- Carry out the electric routing according
to the unit version and the connection
diagram (see reverse).
The terminal clamps of the terminal
blocks X5 and X6 in the left
connection
area carry low voltage and may not
come into contact with the mains
voltage! Ignoring this will inevitably
lead to the destruction of the control
unit and to the loss of the basis for
warranty claims!
The terminal clamps of the terminal
blocks X7 to X10 in the right
connection area carry mains voltage,
depending on the operation mode.
When connecting the electric cables,
the cables with a solid core can be
placed directly into the clamp. The
twisted core must carefully be lead in
by pressing the locking device
5- Slide clamp covers onto the wall-
mounting case and fasten them.
6- Slide the control unit into the wall-
mounting unit and let it engage under
evenly distributed pressure. The
electric connection is made via the
socket strip on the motherboard.
Tighten the control unit and both quick-
clamping devices clockwise.
Note:
When routing the control unit, ensure that
sensor-, data bus- and mains lines are
routed separately. Mutual routing inside
one cable is prohibited. Use cable ducts
equipped with separators, if necessary.
230 V~
1
2
GB

GB-10
Electrical connections
X5 X6 Sensor- and data bus lines (X5-X6)
1 1 B – Data bus - A (T2B)
2 2 Outdoor sensor ARV20 Mad
3 3 Do not use
4 4 Tank sensor
5 5 Flow sensor mixed circuit 1
6 6 Variable input 1
7 7 Variable input 2
8 8 Variable input 3
9 9 Flow sensor mixed circuit 2
10 10 Do not use
11 11 Do not use
12 12 Do not use
/
//
/1
11
1
X7 X10 X10 Mains connections (X7)
  L1 (230V)
X8 X9 X10 Pumps and mixing valve engines (X8, X9, X10)
 
Unmixed circuit pump
 
Charge pump
4 5 5 Engine mixing valve 1 (OPEN)
5Engine mixing valve (CLOS)
6 7 7 Mixed circuit pump 1
7 8 8 Variable output 1
8 9 9 Variable output 2
9 10 10 Engine mixing valve 2 (OPEN)
10 Engine mixing valve 2 (CLOS)
11 12 12 Mixed circuit pump 2
X11 Data bus boiler control unit (X11)
AData bus boiler control unit A
BData bus boiler control unit B
Here, only connect the first MadQ of the data bus connection!
Only connect the A-B data bus boiler control unit (RS485) of the boiler control unit after the first MadQ
control unit from position 20-21 in the boiler to position A-B on X11 in the wall-mounting case. Every
following MadQ control unit (up to 5) must be connected to the A-B data bus (T2B) from position 1 to
X6 and X5.
GB

GB-11
Thermostats (for remote-
control)
Mounting Location
a – for applications without room sensor
If the internal room sensor is not to be
activated the unit may be mounted at
any location indoors.
b – for applications with room sensor
The activated room sensor should be
fixed at a height of approx.1.20 – 1.50
m at a place most representative of all
rooms. It is recommended to chose a
partition wall in the coolest day room.
In order to ensure sufficient air
circulation at the room station, it must be
mounted to the wall with a gap
inbetween.
The thermostat must not be mounted:
– at locations subjected to direct solar
radiation (consider the position of the
sun during winter).
– close to heat-generating appliances,
such as televisions, refrigerators, wall
lamps, radiators etc.
– on walls with heating or domestic hot
water pipes or chimneys behind.
– on non-insulated outside walls
– in corners or wall recesses, shelves or
behind curtains (insufficient ventilation)
– close to doors of unheated rooms
(influence of low temperatures)
– on unsealed flush-type boxes
(influence of external low temperatures
due to the chimney effect of installation
tubes)
– in rooms with radiators controlled by
thermostatic valves (mutual influence).
Mounting instructions
After removing the front panel by pressing
the locating lug the wall mounting base
can be taken off and mounted at the
desired location using the enclosed dowel
pins and screws. The data bus line must
thereby be routed through the bottom
cable gland.
Recommended connecting cable:
2x0.6 max. cable length: 50 m.
Note: For new installations use a
flush-mounting switch box to
ensure perfect routing of
cable.
↑Locating lug
GB

GB-12
Electrical connection
The 2-strand data bus cable is connected
to terminals A and B of the 2-pole terminal
strip on the bottom plate. The connections
are not interchangeable and must be
connected in compliance with the
identification A/B on the base. If the two
connecting lines are mixed up by mistake
the display will be out of function.
Once the electrical connection is
completed the thermostat is hooked in
flush at the top and folded down, as
shown in the picture, until it audibly
engages into the wall-mounting base.
Electrical connection at control unit
See assembly instructions of the controll
unit.
Data bus allocation
The connection of one or more
thermostats to the control unit occurs via a
two-core data bus line. Because this
connection is always carried out parallel in
the same line, a separate bus address
must be allocated to every thermostat.
Likewise, a separate bus address must be
allocated to every control unit (if there is
more than one, e.g. when the heating
circuit is extended).
Bus address (control unit)
If there is only one control unit, it should
have bus address 10. If there is more than
one control unit in the network (max.: five),
the leading control unit that controls the
boiler control unit, has bus address 10, the
others are allocated in sequence with bus
addresses 20, 30, 40 and 50.
Setting the bus address in the control
unit
The setting of the bus address is carried
out after entering the installer code in the
data bus level of the corresponding control
unit (see commissioning of the control
unit).
Bus address (thermostat)
The allocation of the bus addresses of the
control units and the bus addresses of the
thermostats must be carried out according
to the enclosed table.
Setting the bus address in the thermostat
A- Commissioning
After completing the electrical installation
and commissioning the plant, all available
segments appear in the display.
Control unit Thermostat
Function Bus
address Heating circuit Bus
address
Control unit 1 10
Unmixed circ.
Mixed circ. 1
Mixed circ. 2
11
12
13
Control unit 2 20
Unmixed circ.
Mixed circ. 1
Mixed circ. 2
21
22
23
Control unit 3 30
Unmixed circ.
Mixed circ. 1
Mixed circ. 2
31
32
33
Control unit 4 40
Unmixed circ.
Mixed circ. 1
Mixed circ. 2
41
42
43
Control unit 5 50
Unmixed circ.
Mixed circ. 1
Mixed circ. 2
51
52
53
¾ ¿ À Á Ä
°C
KWh
Min
%
°C
KWh
Min
%
       
0 2 4 6 8 10 12 14 16 18 20 22 24
ffffffffffff
Fffff ffff
Segment test
GB

GB-13
Subsequently, the unit identification and
the data bus address will appear.
After setting the bus address using the
rotary pushbutton and confirming this by
pressing it, the allocation determined by the
address will appear automatically.
Attention:
Double allocation of bus addresses is not
permitted and inevitably lead to faults in
data transfer and therefore to faulty control
of the heating system.
B - Changing bus addresses
If a bus address has to be changed
afterwards, then carry out the following
procedure:
1 - By pressing the bottom locking device,
remove the thermostat from the
ground board (the bus is
disconnected).
2 - Place the thermostat again while
keeping the rotary pushbutton
depressed until the address setting
appears.
3 - Set and confirm a new bus address.
RS-2
15.05.V1.2
BUS ADDRES
11
Instrument identification
Device type
Software date
Software version
Address settings
see table above
BUS
HC AU-1
Data bus address
Unmixed circ.
MadQ control unit 1
(=AU1),
MadQ control unit 2
(=AU2), etc.
GB

GB-14
Accessories
Outdoor sensor
Mounting Location
The outdoor sensor should be mounted on
the most exposed and coldest side of the
building (north or north-east) at a height of
min. 2 m above ground.
Exception: If the preferential living
area is facing another
direction, the
corresponding side of
the building should be
chosen.
When mounting the sensor mind external
heat sources (heated chimneys, war hot
air from air shafts, installation on black
surfaces, thermal bridges in the wall, etc.)
which could falsify the measuring value.
The cable outlet must always be directed
downwards in order to avoid the
penetration of moisture.
The outside sensor may not be installed
close to transmitting or receiving
equipment (on garage walls close to
receivers for garage door openers,
amateur radio antennas, radio controlled
alarm systems or close to large scale
radio transmission equipment etc.).
Electrical connection
For the electrical installation preferably
use a 2-strand cable with a minimum
cross-section of 0,6mm2. The connection
is made at the 2 screw terminals inside the
sensor case and may be interchanged.
Mounting instructions
1– Route the sensor cable to the
mounting location
2– Loosen lid screws from sensor case
and remove top
3– Mount sensor base with enclosed
central fastening screw.
Use sealing ring! Cable outlet must be
directed downwards!
4– Insert the sensor cable so that the
cable jacket is fully enclosed by the
sealing lip.
5– Electrical connection on terminal block
boiler control unit position 18-19.
6– Attach the lid again an and screw it
firmly onto the base. Ensure correct fit
of sealing ring.
In situations when the control unit has to
be controlled via its own outside sensor,
ARV20 (white) must be used. Connection
to the control unit.
Outside sensor
ARV12
GB

GB-15
Tank sensor
Versions:
AVB06 Cable length 5 m
Application: Tank sensor (for nearby hot
water generators, buffer
tanks etc.)
Mounting location:
In the designated immersion sleeve of the
corresponding application.
Mounting in DHW- or buffer tanks
Bend the pressing spring towards the
sensor tip and slide the sensor into the dry
immersion sleeve of the corresponding
tank.
Electrical connection
Clamp the sensor to the appropriate
terminal clamps of the respective control
unit (see corresponding connection
diagram). The two-strand connection is
interchangeable.
Flow sensor
Flow sensor VF20
Versions:
VF 20 Cable length 4 m
S4363400
Application: As a flow sensor for unmixed
circuits and mixed circuits of
heating circuits
Mounting location:
Behind the mixer pump at a distance of at
least 50 cm.
Mounting:
Polish the flow pipe and apply heat
conductive paste.
Fasten the sensor to the contact location with
a tensioning belt so that it is flush with the
pipe's surface.
Ensure a tight fitting!
Electrical connection
Clamp the sensor to the appropriate terminal
clamps of the respective control unit (see
corresponding connection diagram). The two-
strand connection is interchangeable.
Tank sensor AVB06
GB

GB-16
Resistance values of sensors
depending on temperature
temperature
°
°°
°Celsius
PTC 2K
(2kΩ
ΩΩ
Ω/25°
°°
°C)
Flow sensor VF20
Outside sensor ARV20
Tank sensor AVB06
NTC 12K
(12kΩ
ΩΩ
Ω/25°
°°
°C)
Outside sensor ARV12
-20 1.387 98.900
-18
-16
-14
-12
-10
1.413
1.438
1.463
1.488
1.513
98.950
80.100
72.200
65.150
58.900
-8
-6
-4
-2
0
1.540
1.566
1.593
1.619
1.646
53.300
48.250
43.750
39.750
36.150
2
4
6
8
10
1.673
1.700
1.728
1.756
1.783
32.900
29.950
27.350
24.950
22.800
12
14
16
18
20
1.812
1.841
1.869
1.898
1.927
20.850
19.100
17.500
16.100
14.750
22
24
26
28
30
1.957
1.986
2.016
2.046
2.077
13.600
12.500
11.500
10.600
9.800
32
34
36
38
40
2.107
2.128
2.169
2.200
2.232
9.100
8.350
7.750
7.200
6.650
45
50
2.311
2.393
5.525
4.600
55
60
2.475
2.559
3.850
3.250
70 2.732 2.325
80 2.910 1.700
90 3.093 1.275
100 3.283 950
GB

GB-17
Commissioning the control unit
Segment test and identification
During the first activation of the control
unit or with each return of voltage after a
power failure all segments available in
display will appear:
This is followed by the equipment version
with type code and current version number
of software status
If there is no alarm at present, the
standard display with date, time and
current flow temperature will appear
afterwards.
An active summer switch-off is
represented by a sunshade symbol ( À ).
An active frost protection function is
represented by a ice crystal symbol ( Á ).
Code input
Installer code
After entering the installer code all
parameters determined for the heating
specialist are released and can be edited
in accordance with the syst version.
Code input
In order to enter the installer code, the
keys
¥
and
§
must be pressed
simultaneously for approx. three seconds,
until the code input appears in the display.
¥ + §
Each flashing digit is set by using the
rotary pushbutton in accordance with the
code number and is confirmed by pressing
the button. All other digits are edited in the
same way.
After the code has been entered correctly,
the acknowledgement INSTALLER OK will
appear upon confirmation of the last digit,
after a wrong entry, the message CODE
ERROR will appear.
The factory set consumer code is: 1 2 3 4
The factory set installer code is : 0 1 2 3
Note: If the code is not accepted, you
should consult the supplier!
Attention: Enabled installer parameters will
be blocked again if no further
action takes place over a period of
ten minutes. In this case the
installer code must be entered
again.
¾ ¿ À Á Ä
°C
KWh
Min
%
°C
KWh
Min
%
       
0 2 4 6 8 10 12 14 16 18 20 22 24
ffffffffffff
Fffff ffff
À
°C
WE
25JUN
;
03

1632 63.5
°C
WE
25JUN
;
03

1632 63.5
Segment test
Standard displa
y
Wednesday, June 25th
2003
16:32 hrs Temp. 63.5°C
Summer shutdown
active
Á
°C
WE
25JUN
;
03

1632 635
Plant frost
protection
active
N
233B
VV
C
18 V2.0
Device type
Version number
Type code
CODE
0 000
I
NSTALLER
OK
CODE
ERROR
GB

GB-18
Automatic setting function
This function can switch off control circuits
that are not needed or are only needed later.
The control circuits are registered
automatically when their corresponding
sensors are connected and transfer
permitted measuring values. Control circuits
without sensor circuits are automatically
switched off without displaying an alarm.
The AUTO-SET function is activated every
time the mains voltage is switched on.
Automatic activation
If the AUTO-SET function is switched on by
parameter 14 in the SYSTEM level and the
commissioning date has not yet been saved,
then the sensors that are connected or
clamped off are registered automatically
every time the control unit is switched on.
During this period, the error messages of the
sensors (short circuit interruption) are
suppressed.
If the commissioning date was saved, a
changed sensor configuration can only be
confirmed via manual activation.
Manual activation
The AUTO-SET function can be activated
manually at any time. To do this, press the
rotary pushbutton when switching on the
control unit while the version is being
displayed. Keep the button depressed until
the AUTO-SET function in the display is quit.
The AUTO-SET function serves the following
sensor inputs:
– Outdoor sensor
– Flow sensor 1
– Flow sensor 2
– Tank sensor
Apart from that, the AUTO-SET function is
only carried out if the circuits in the following
levels that are allocated to the sensors were
parameterised accordingly.
For the tank sensor:
HYDRAULIC Level
Parameter 2 - DHW-charge pump function
set value OFF or 1 (DHW-charge pump)
For flow sensor 1:
HYDRAULIC Level
Parameter 3 – mixed circuit function 1 set
value OFF or 3 (mixed circuit)
For flow sensor 2:
HYDRAULIC Level
Parameter 4 – mixed circuit function 2 set
value OFF or 3 (mixed circuit)
Because a parameter setting is not changed
by the AUTO-SET function, the current
settings are checked beforehand. A change is
only made if one of the settings above is
changed. This means that the deeper system
configuration can never be changed by the
AUTO-SET function.
N
233B
VV
C
18 V2.0
AU
T
O
SE
T
Standard display
GB

GB-19
Alarm messages
In order to be able to perform an exact
diagnose in case of a problem the control
system is equipped with a comprehensive
fault alarm system. An alarm is thereby
always displayed and saved on the
corresponding control unit.
There are five different categories of error
messages:
1 - Sensor error messages
Sensor measuring values that are not
inside the measuring range are valued as
errors. They appear with an error message
according to their use.
2 - Error messages of the boiler control
unit
These error messages evaluate the
respective control status. They appear with
the corresponding error message,
depending on the version and allocation.
3 - Logical error messages
The error messages evaluate the expected
control result. They appear with the
corresponding error message, depending
on the version and allocation.
4 - Bus error messages
These error messages relate to address
errors such as double allocation or
unrecognised address settings inside the
data bus. They appear with the
corresponding error message, depending
on the version and allocation.
5 - Alarms from the boiler control
These error messages come from the
boiler control and are divided into
permanent faults (permanent locking) with
error code E-XX (MCBA-code) or
temporary faults (self-eliminating locking)
with fault code B-XX (MCBA-code).
The display and further processing of logical
error messages can be suppressed by a
corresponding parameter setting (see
parameter 13 – SYSTEM level – logical error
message)
Further processing of errors:
– Errors appear in the standard display of the
control
– System errors appear in the info-level at the
corresponding info-value
– If necessary, errors are transferred into the
error message level (see description below)
– At the corresponding parameter settings,
errors activate an error notification output
for connecting an optical or acoustic signal
transmitter.
– Errors are transferred to the corresponding
gateways via the data bus.
Table of error messages:
Sensors and variable inputs:
Designation Error type Code
Outdoor sensor Interruption 10-0
Outdoor sensor Short circuit 10-1
Flow sensor 1 Interruption 12-0
Flow sensor 1 Short circuit 12-1
Tank sensor Interruption 13-0
Tank sensor Short circuit 13-1
VI 2 Interruption 14-0
VI 2 Short circuit 14-1
VI 2 Error message 14-7
VI 3 Interruption 15-0
VI 3 Short circuit 15-1
VI 3 Error message 15-7
VI 1 Interruption 16-0
VI 1 Short circuit 16-1
VI 1 Error message 16-7
Buffer sensor Interruption 17-0
Buffer sensor Short circuit 17-1
Designation Error type Code
Flow sensor 2 Interruption 18-0
Flow sensor 2 Short circuit 18-1
GB

GB-20
Temperatures:
Heat generator Not reached 50-4
Heat generator Exceeded 50-5
Domestic hot
water Not reached 51-4
Flow MC1 Not reached 52-4
Flow MC2 Not reached 53-4
Room HC Not reached 54-4
ROOM MC1 Not reached 55-4
ROOM MC2 Not reached 56-4
Data bus error
Address Address conflict 70-0
Activity No T2B-signal 70-1
EEPROM 71-0
EEPROM defective 71-1
Bus error Bus error 70-6
Fault in boiler control
Error Locking En: XX
Error Blockage Bn: XX
Explanation fault in boiler control:
En: XX
Alarm message register
The control unit is provided with an error
message level, which is able to hold up to five
alarms. The alarms are displayed with date,
time, and nature of fault (error number), the
errors are polled in the sequence of their
occurrence in the level
ALARM .
The latest (= up-to-date) alarm is prioritized at
first position, alarms that have arrived before
appear in the order of their occurrence. Upon
arrival of a new alarm the fifth alarm will be
deleted.
The alarm messages of the MCBA are a
special case. Because they are external
errors, they are not saved in the internal error
message register of the control unit.
Plant information
Plants and system temperatures
After accessing the information level using the
information key ¤ , all available plant- and
system temperatures can be requested one
by one by turning the rotary pushbutton
clockwise.
If
set value is displayed in the following table
in the category "display value", it will appear
when the rotary pushbutton is pushed.
The following displays only appear under the
specified display conditions. Some of the
displays are not available for certain unit
versions and are therefore skipped.
GB
Boiler error codes
(see boiler documentation)
Boiler
0 = Boiler 1
1 to 7 = Boiler 2 to 8 (Cascade)
E = Error
(B =Boiler blocking code)