Viessmann MatriX Operating instructions

Service instructions
for contractors
VIESMANN
MatriX radiant burner
Type VMIII
Pressure-jet gas burner
for the Vitocrossal 300, type CT3B
Rated heating output 187 to 314 kW
For applicability, see the last page
MatriX radiant burner
5609 774 GB 7/2017 Please keep safe.

2
Please follow these safety instructions closely to
prevent accidents and material losses.
Safety instructions explained
Danger
This symbol warns against the risk of injury.
!Please note
This symbol warns against the risk of material
losses and environmental pollution.
Note
Details identified by the word "Note" contain additional
information.
Target group
These instructions are exclusively intended for quali-
fied contractors.
■Work on gas installations may only be carried out by
a registered gas fitter.
■Work on electrical equipment may only be carried
out by a qualified electrician.
■The system must be commissioned by the system
installer or a qualified person authorised by the
installer.
■This appliance has not been designed to be oper-
ated by individuals (including children) with limited
physical, sensory or mental capacities or who are
lacking in the appropriate experience and/or knowl-
edge, unless they are supervised by a person with
responsibility for their safety or were instructed by
that person in the operation of this appliance.
!Please note
Children should be supervised.
Ensure that children never play with the appli-
ance.
Regulations
Observe the following when working on this system: ■Statutory regulations for the prevention of accidents
■Statutory regulations for environmental protection
■Codes of practice of the relevant trade associations
■All current safety regulations as defined by DIN, EN,
DVGW, TRGI, TRF, VDE and all locally applicable
standards
aÖNORM, EN, ÖVGW G K Guidelines, ÖVGW-
TRF and ÖVE
cSEV, SUVA, SVGW, SVTI, SWKI, VKF and
EKAS guideline 1942: LPG, part 2
Safety instructions
Safety instructions
5609 774 GB

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If you smell gas
Danger
Escaping gas can lead to explosions which may
result in serious injury.
■Do not smoke. Prevent naked flames and
sparks. Never switch lights or electrical appli-
ances on or off.
■Close the gas shut-off valve.
■Open windows and doors.
■Evacuate any people from the danger zone.
■Notify your gas or electricity supply utility from
outside the building.
■Have the power supply to the building shut off
from a safe place (outside the building).
If you smell flue gas
Danger
Flue gas can lead to life threatening poisoning.
■Shut down the heating system.
■Ventilate the installation site.
■Close all doors in the living space.
Working on the system
■Where gas is used as the fuel, close the main gas
shut-off valve and safeguard it against unintentional
reopening.
■Isolate the system from the power supply (e.g. by
removing the separate fuse or by means of a mains
isolator) and check that it is no longer live.
■Safeguard the system against reconnection.
!Please note
Electronic assemblies can be damaged by elec-
trostatic discharge.
Prior to commencing any work, touch earthed
objects such as heating or water pipes to dis-
charge static loads.
Repair work
!Please note
Repairing components that fulfil a safety func-
tion can compromise the safe operation of the
system.
Replace faulty components only with genuine
Viessmann spare parts.
Auxiliary components, spare and wearing parts
!Please note
Spare and wearing parts that have not been tes-
ted together with the system can compromise its
function. Installing non-authorised components
and making non-approved modifications or con-
versions can compromise safety and may inva-
lidate our warranty.
For replacements, use only original spare parts
supplied or approved by Viessmann.
Safety instructions
Safety instructions (cont.)
5609 774 GB

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1. Product information Symbols ................................................................................................. 5
Intended use .......................................................................................... 5
2. Commissioning, inspec-
tion, maintenance
Steps - commissioning, inspection and maintenance ............................ 6
3. Control unit Setting the codes at the control unit ...................................................... 18
4. Burner control unit Burner control unit VUC 310 .................................................................. 19
■Display and programming unit ............................................................ 19
■Operating display ................................................................................ 19
■Information display/configuration display ............................................ 21
■Reset all operating parameters to their delivered condition ............... 23
■Manual mode and service display ...................................................... 23
5. Flow diagram Burner control unit flow diagram ............................................................ 24
■Description of state: ............................................................................ 24
6. Troubleshooting Fault display ........................................................................................... 26
■Fault display ....................................................................................... 26
■Fault memory ...................................................................................... 26
Fault codes ............................................................................................ 26
■General process errors ....................................................................... 26
■Internal system fault ........................................................................... 29
Faults without fault display ..................................................................... 29
7. Parts lists Ordering parts ........................................................................................ 31
Parts ...................................................................................................... 32
8. Component overview ................................................................................................................ 34
9. Air pressure switch ................................................................................................................ 35
10. Connection diagrams Burner control unit connection diagram ................................................. 36
11. Report ................................................................................................................ 38
12. Specification ................................................................................................................ 39
13. Final decommissioning Final decommissioning and disposal ..................................................... 40
14. Certificates Declaration of Conformity ...................................................................... 41
■MatriX radiant burner, type VM III ....................................................... 41
Manufacturer's certificate ....................................................................... 41
15. Keyword index ................................................................................................................ 42
Index
Index
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Symbol Meaning
Reference to other document containing
further information
1.
Step in a diagram:
The numbers correspond to the order in
which the steps are carried out.
Warning of material losses and environ-
mental pollution
Live electrical area
Pay particular attention.
■Component must audibly click into place.
or
■Acoustic signal
■Fit new component.
or
■In conjunction with a tool: Clean the sur-
face.
Dispose of component correctly.
Dispose of component at a suitable collec-
tion point. Do not dispose of component in
domestic waste.
The steps in connection with commissioning, inspec-
tion and maintenance are found in the "Commission-
ing, inspection and maintenance" section and identified
as follows:
Symbol Meaning
Steps required during commissioning
Not required during commissioning
Steps required during inspection
Not required during inspection
Steps required during maintenance
Not required during maintenance
Intended use
The appliance is only intended to be installed and
operated in sealed unvented heating systems that
comply with EN 12828, with due attention paid to the
associated installation, service and operating instruc-
tions as well as the details in the datasheet.
It is only designed for the heating up of heating water.
Commercial or industrial usage for a purpose other
than the heating up of heating water shall be deemed
inappropriate.
Intended use presupposes that a fixed installation in
conjunction with permissible components designed for
this purpose has been carried out.
Every other use will be deemed to be inappropriate.
Any resulting losses are excluded from the manufac-
turer's liability.
Any usage beyond this must be approved by the man-
ufacturer for the individual case.
Intended use also includes the adherence to mainte-
nance and inspection intervals.
Product information
Symbols
5609 774 GB
Information

6
Commissioning steps
Inspection steps
Maintenance steps Page
••• 1. Commissioning the system............................................................................................... 7
•2. Checking the gas type....................................................................................................... 7
•3. Converting to natural gas LL............................................................................................ 8
•4. Reducing the heating output (if required)........................................................................ 8
••• 5. Checking static pressure and supply pressure.............................................................. 9
••• 6. Checking the rotary damper setting................................................................................. 11
••• 7. Checking the CO2 content................................................................................................. 11
••• 8. Checking the CO content
••• 9. Checking the flue gas temperature
• • 10. Displaying the ionisation current..................................................................................... 13
• • 11. Shutting down the system................................................................................................. 14
• • 12. Checking the burner gauze assembly.............................................................................. 14
• • 13. Checking the ignition electrodes and ionisation electrode........................................... 14
• • 14. Cleaning the burner........................................................................................................... 15
•15. Fitting the burner................................................................................................................ 15
• • 16. Checking both gas train valves for tightness.................................................................. 16
• • 17. Checking the filter element in the gas line (if installed) and replacing if required
••• 18. Checking all gas connections for tightness.................................................................... 16
•19. Implementing final checks................................................................................................ 16
•20. Operating and service documents................................................................................... 17
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance
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Danger
CO build-up as a result of incorrect burner
adjustment can have serious health implications.
Carry out a CO test before and after work on
gas appliances.
Note
It is essential to check the burner settings with the
boiler heated to operating temperature (min. 40 °C).
Also check in the partial load range.
Boiler control unit service instructions
1. Check the heating system pressure.
2. Open the gas shut-off valve.
3. Switch ON the mains isolator (outside the installa-
tion room).
4. Remove the burner hood.
A B
C D
Fig. 1
5. Turn ON the system ON/OFF switch B at the con-
trol unit.
If fault indicator A on the control unit illuminates
and display C on the burner control unit flashes,
first reset the system. To do this, press reset button
D on the burner control unit.
Note
The appliance can enter a fault state during com-
missioning if there is insufficient gas in the gas line
(the fault indicator on the control unit illuminates).
Purge the gas line again. Reset the burner control
unit.
6. Adjust the codes on the boiler control unit in
accordance with the table on page 18.
Control unit installation and service instruc-
tions
Checking the gas type
1. Check the gas type and Wobbe index (Wo) with
your gas supply utility.
■With the natural gas E setting, the boilers can
be operated in the Wobbe index range 12.0 to
16.1 kWh/m3 (43.2 to 58.0 MJ/m3).
■With the natural gas LL setting, the boilers can
be operated in the Wobbe index range 10.0 to
13.1 kWh/m3 (36.0 to 47.2 MJ/m3) (not in a or
c).
2. In the delivered condition, the burner is set up for
natural gas E. If necessary, convert the burner to
the other gas type (see page 8) in accordance
with the details provided by the gas supply utility.
3. Record the gas type in the report (on page 38).
Commissioning, inspection, maintenance
Commissioning the system
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(not in a and c)
BCD
A
F
E G
Fig. 2
01. Close the gas shut-off valve.
02. Turn OFF the system ON/OFF switch on the con-
trol unit.
03. Switch OFF the mains isolator (outside the instal-
lation room) or isolate the mains power and
secure against unintentional reconnection.
04. Undo fitting A from the gas supply pipe.
05. Pull compensation hose G from the gas train.
06. Release the gas train from flange E.
07. Remove restrictor C with rubber cork gasket D.
08. Secure the gas train (without restrictor C and
without rubber cork gasket D) with O-ring B at
flange E. Replace factory-fitted M 5 x 16 screws
with M 5 x 12 (standard delivery, individual part).
Torque when tightening screws: 1.5 Nm.
09. Secure fitting A.
10. Push compensation hose G on to the gas train.
11. Affix label "Set to natural gas LL" over existing
label F.
12. Start the burner (see page 7).
Danger
Escaping gas leads to a risk of explosion.
Check all fittings for gas tightness.
!Please note
The use of leak detection spray can result in
incorrect functions.
Leak detection spray must not come into contact
with electrical contacts.
Reducing the heating output (if required)
The maximum heating output of the burner can be set
to between 70 and 100 % of the rated heating output if
necessary.
Commissioning, inspection, maintenance
Converting to natural gas LL
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C
D
E
F
Fig. 3
Status Service
S
R
D
C
EF
G
Fig. 4
1. Press S E for longer than 2 s.
flashes.
2. Press F until "6" is shown on display C under
Service.
3. Press S E. "6" is shown on display C under Sta-
tus.
4. Press S E. "1" is shown on display C under Sta-
tus and the current value for the maximum heating
output in % is shown under Service.
5. Press F or D for the required maximum heat-
ing output.
6. Press S E to confirm. If applied successfully, "1"
will be shown on display C under Service; if not,
"0" will appear.
7. Press S E to switch to the operating display.
8. Press R G.
A system restart is initiated.
Checking static pressure and supply pressure
A
Fig. 5
Static pressure
1. Close the gas shut-off valve.
Commissioning, inspection, maintenance
Reducing the heating output (if required) (cont.)
5609 774 GB

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2. Loosen the screw in test connector A, but do not
remove.
3. Connect the pressure tester at test connector A.
4. Open the gas shut-off valve.
5. Check the static pressure (max. 60 mbar/6 kPa).
6. Record the actual value in the report (on
page 38).
Supply pressure
1. Start the burner.
Note
For commissioning, see page 7. Switch the burner
to maximum heating output by activating the emis-
sions test switch at the control unit.
2. Check the supply pressure (flow pressure); see
table on page 10.
Note
The supply pressure (flow pressure) should be
between 18 and 50 mbar (1.8 and 5 kPa). The gas
pressure switch is factory set to 10 mbar (1 kPa).
Never alter this setting.
3. Record the actual value in the report (on
page 38).
4. Close the gas shut-off valve.
5. Remove the pressure tester and close test connec-
tor A.
Supply pressure
(flow pressure)
Measure
< 15 mbar
(1.5 kPa)
Make no adjustments and notify the gas supply utility
15 to 18 mbar
(1.5 to 1.8 kPa)
Please note: The boiler may only be operated temporarily with this setting (emergen-
cy mode).
Notify the gas supply utility.
18 to 50 mbar
(1.8 to 5 kPa)
Start the boiler.
> 50 mbar (5 kPa) Install a separate gas pressure governor with zero off upstream of the boiler system.
Regulate the pressure to 20 mbar (2 kPa).
Notify your gas supply utility.
Commissioning, inspection, maintenance
Checking static pressure and supply pressure (cont.)
5609 774 GB

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0
0
DA B C
Fig. 6
1. Open the gas shut-off valve.
2. Check the position of the rotary damper with the
burner in idle mode. Rotary damper windows B
must be fully opened. Scale ring D on the air
damper servomotor must be set to "0", relative to
marking C.
3. Check whether compensation hose A has been
connected between the gas train and distributor
pipe.
4. Start the burner.
5. Check the position of the rotary damper during the
start-up phase. Rotary damper windows B must
nearly close for approx. 5 s. During this period,
scale ring D is set as follows:
Rated heating output
in kW
Rotary damper setting
187 35°
248 30°
314 30°
Checking the CO2 content
Preparing the test
AB
Fig. 7
C
D
E
F
Fig. 8
1. Open the gas shut-off valve.
Commissioning, inspection, maintenance
Checking the rotary damper setting
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2. Start the burner with the emissions test switch ena-
bled.
3. Simultaneously press and hold S E and D for
longer than 2 s.
Display C will then show the following:
■Under Status: "P" (= controlled stop)
■Under Service: Modulation level in %
("100" = 100 % = upper heating output,
"0" = 0 % = lower heating output)
CO2 test at the upper heating output
1. Press and hold F until the service display has
counted up to "100" (= 100 %).
2. Check the CO2 content in the flue pipe.
Burner output in kW Permissible CO2 con-
tent in %
187
9.0 (+0.3/-0.1)
248
314
3. If the CO2 content needs to be adjusted:
Remove cap B and turn setting screw A in small
steps (Allen key 3 mm) until the CO2 content is
within the specified range:
■Turning clockwise → CO2 content drops
■Turning anticlockwise → CO2 content increases
4. Record the actual value in the report (on
page 38).
CO2 test at the lower heating output
AB
Fig. 9
C
D
E
F
Fig. 10
1. Press and hold D until the service display has
counted down to "0" (lower heating output).
Commissioning, inspection, maintenance
Checking the CO2 content (cont.)
5609 774 GB

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2. Check the CO2 content in the flue pipe.
Burner output in kW Permissible CO2 con-
tent in %
187
8.5 (± 0.2)
248
314
Note
At the lower heating output, the CO2 content must
always be at least 0.2 % lower than at the upper
heating output.
3. If the CO2 content needs to be adjusted:
Undo cover B and turn setting screw A in small
steps (Torx 40) until the CO2 content lies within the
specified range:
■Turning clockwise → CO2 content increases
■Turning anticlockwise → CO2 content drops
4. Record the actual value in the report (on
page 38).
Rechecking the values
Regulate to the upper and lower heating output
again using the programming unit in the burner
control unit. If the values do not match the permis-
sible CO2 content according to the tables on
pages 12 and 13, repeat the steps for the upper
and lower heating output.
5. Press and hold S E and D simultaneously for
longer than 2 s. Burner switches to operating
mode.
Checking the CO content
Checking the flue gas temperature
Displaying the ionisation current
Note
The ionisation current must be called up via the burner
control unit. It is not possible to measure the ionisation
current using the Testomatik-Gas or a multimeter.
01. Press S approx. 2 s , " " flashes.
02. Press until "5" is shown under Service.
03. Press S. "5" will be displayed under Status.
04. Press until "3" is shown under Service.
05. Press S. "3" is shown under Status, and during
operation the ionisation current is shown under
Service (e.g. 30 = 3.0 µA).
06. Start the burner with the emissions test switch.
07. Read the ionisation current.
Note
The ionisation current should be at least 3 µA for
approx. 2 to 3 s after the gas train has been
opened and during operation.
08. Record the actual value in the report.
09. Press S approx. 2 s , " " flashes.
10. Press until "5" is shown under Service.
11. Press S. "5" will be displayed under Status.
12. Press until "0" is shown under Service.
13. Press S. The operating display will be shown
again.
Commissioning, inspection, maintenance
Checking the CO2 content (cont.)
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1. Switch OFF the mains isolator or the power supply
and safeguard against unauthorised reconnection.
Danger
Mains voltage can be life-threatening.
For maintenance work, isolate the system
from the power supply.
2. Remove the burner hood.
3. Remove burner cable with plug fA and lÖ from the
burner control unit and pull out of the burner cas-
ing.
4. Close the gas shut-off valve.
Checking the burner gauze assembly
Danger
Escaping gas leads to a risk of explosion.
Close the gas shut-off valve.
C
B
A
Fig. 11
1. Undo fitting A from the gas supply pipe.
2. Undo the screws on the boiler door and open the
door.
3. Check the wire mesh of burner gauze assembly B
and thermal protection ring C for damage. Slight
wavy deformations of burner gauze assembly B
are OK.
4. If required, replace burner gauze assembly B
together with thermal protection ring C.
!Please note
Scratches inside the combustion chamber can
lead to corrosion.
Never place tools or other objects inside the
combustion chamber.
Burner component installation instructions
For cleaning the combustion chamber and flues,
see boiler service instructions.
Checking the ignition electrodes and ionisation electrode
Ignition electrodes
7±0,5
5±1
3,5±0,5
Fig. 12
Ionisation electrode
12 ± 2
Fig. 13
Check ignition electrodes and ionisation electrode for
correct gap to the burner gauze assembly and for pos-
sible damage. Replace electrodes if required.
Installation instructions "Replacing burner com-
ponents"
Commissioning, inspection, maintenance
Shutting down the system
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C
B
E D
A
Fig. 14
1. Undo fitting A from the gas supply pipe.
2. Undo Venturi mixing pipe D from fan E.
3. Remove Venturi mixing pipe D with gas train B.
4. Pull connecting cables "100" and "100A" from fan
E. Remove fan E.
5. Clean the fan housing and impeller with com-
pressed air.
6. If required, clean the inside of burner gauze
assembly C with a vacuum cleaner.
Fitting the burner
B
D C
A
Fig. 15
1. Mount fan D.
Note
Ensure the gasket between the fan housing and
the boiler door is correctly seated.
2. Plug the connecting cables "100" and "100A" into
the fan.
3. Secure Venturi mixing pipe C with gas train B on
fan D.
4. Close the boiler door. Tighten the screws on the
boiler door evenly and diagonally.
Torque: 30 Nm
Information regarding the door lock
Before commissioning, check that the boiler door is
seated correctly and has no leaks.
5. Secure fitting A to the gas supply pipe.
Danger
Escaping gas leads to a risk of explosion.
Check the fitting and gasket between the fan
housing and the boiler door for gas tightness.
Commissioning, inspection, maintenance
Cleaning the burner
5609 774 GB

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B
A
Fig. 16
1. Close the gas shut-off valve.
2. Undo screw inside test connector B for intake
pressure, but do not fully remove it.
3. Loosen the screw in test connector A, but do not
remove.
4. Connect the pressure tester with the manual pump
at test connector A.
5. Gently operate the manual pump to build a test
pressure of approx. 50 mbar (5 kPa).
6. Wait approx. 5 min for the temperature to level out
and then observe the display on the pressure
tester:
The gas train is gas-tight if the displayed pressure
does not drop by more than 1 mbar (0.1 kPa)
within a further 5 min.
Otherwise there is a leak. In this case, return the
gas train to your local Viessmann sales office for
tests.
7. After the test, close both test connectors by tight-
ening the respective screws.
Danger
Escaping gas leads to a risk of explosion.
Check test connector for gas tightness.
!Please note
The use of leak detection spray can result in
incorrect functions.
Leak detection spray must not come into
contact with electrical contacts.
Checking the filter element in the gas line (if installed) and replacing if
required
Checking all gas connections for tightness
Danger
Escaping gas leads to a risk of explosion.
Always carry out the following steps.
1. Insert new gaskets in all gas fittings that have been
opened and then tighten those fittings.
2. Open the gas shut-off valve.
3. Check the inlet joints of the gas train for tightness.
4. Start the burner (see page 7).
5. Check the outlet seals for tightness:
■Gas train
■Joint between the fan and the boiler door
■Joint between the fan and the Venturi pipe
!Please note
The use of leak detection spray can result in
faulty operation.
Leak detection spray must not come into
contact with electrical contacts.
Implementing final checks
1. Carry out final checks in accordance with the
points on pages 11 to 13.
2. Record actual values in the report (on page 38).
Commissioning, inspection, maintenance
Checking both gas train valves for tightness
5609 774 GB

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1. Complete and detach the customer registration
card:
■Hand system users their section for safekeeping.
■Retain the heating contractor's section.
2. File all parts lists, operating and service instruc-
tions in the folder and hand this over to the system
user.
The installation instructions are no longer required
after the installation is complete and therefore do
not need to be retained.
Commissioning, inspection, maintenance
Operating and service documents
5609 774 GB

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Vitotronic service instructions In conjunction with the following control units:
■Vitotronic 100, type GC1B
■Vitotronic 200, type GW1B
■Vitotronic 300, type GW2B
Settings for the control unit
Coding address Rated heating output of the MatriX radiant burner in kW Coding card
187 248 314
02 2 2 2 1040
05 0 0 0
08 70 25 85
09 1 2 2
15 19 19 27
0A 33 33 33
Control unit
Setting the codes at the control unit
5609 774 GB
Codes

19
Display and programming unit
A display and programming unit is integrated into the
burner control unit. The display indicates the relevant
operating conditions, the service and parameter condi-
tions as well as all fault and error messages.
Status Service
S
R
Fig. 17
AReset button
BLEDs, from left: heat demand, flame, maintenance
and fault.
CSelection key (Select)
DCursor keys
The display comprises four elements of 7 segments
each. Four keys serve to make adjustments at the dif-
ferent operating levels.
Operating display
In standard mode, the status display shows the current
operating conditions. The same applies in a fault state
after pressing reset button R.
The following displays are shown automatically. If a
fault occurs, see the fault codes from page 26. You
can exit at any time by pressing reset button R A
(hold for 0.5 to 10 s).
Status Service
Fig. 18
System start-up after power supply – ON
Status Service
Fig. 19
Standby
Status Service
Fig. 20
Idle state check
System tests
Burner control unit
Burner control unit VUC 310
5609 774 GB
Codes

20
Status Service
Fig. 21
Fan ramp-up
Status Service
Fig. 22
Valve and/or
relay test
Status Service
Fig. 23
Pre-purge
Status Service
Fig. 24
Pre-ignition
Status Service
Fig. 25
Ignition
Safety time
Flame formation
Status Service
Fig. 26
Flame stabilisation
Status Service
Fig. 27
Operation with flame
Status Service
Fig. 28
Reheat
Post-purge
Burner control unit
Burner control unit VUC 310 (cont.)
5609 774 GB
Codes