Viessmann MatriX Mode d'emploi
Service instructions
for contractors
VIESMANN
MatriX radiant burner
Type VMIII
Pressure-jet gas burner
for the Vitocrossal 300, type CM3
Rated output 80 to 130 (87 to 142) kW
For applicability, see the last page
MatriX radiant burner
5692 488 GB 6/2010 Please keep safe.
2
Please follow these safety instructions closely to prevent accidents and mate-
rial 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 envi-
ronmental pollution.
Note
Details identified by the word "Note" con-
tain additional information.
Target group
These instructions are exclusively
designed for qualified personnel.
■ Work on gas equipment must only be
carried out by a qualified gas fitter.
■ Work on electrical equipment must
only be carried out by a qualified elec-
trician.
■ The system must be commissioned by
the system installer or a qualified per-
son authorised by the installer.
Regulations
Observe the following when working on
this system
■ all legal instructions regarding the pre-
vention of accidents,
■ all legal instructions regarding envi-
ronmental protection,
■ the Code of Practice of relevant trade
associations,
■ all current safety regulations as
defined by DIN, EN, DVGW, TRGI,
TRF, VDE and all locally applicable
standards,
■ Gas Safety (Installation & Use) Regu-
lations
– the appropriate Building Regulation
either the Building regulations, the
Building Regulation (Scotland),
Building Regulations (Northern Ire-
land),
– the Water Fittings Regulation or
Water Bylaws in Scotland,
– the current I.E.E. Wiring Regula-
tions.
If you smell gas
Danger
Escaping gas can lead to explo-
sions which may result in serious
injury.
■ Never 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.
■ Remove all people from the
danger zone.
■ Notify your gas or electricity
supplier from outside the build-
ing.
■ Shut off the electricity supply to
the building from a safe place
(outside the building).
Safety instructions
Safety instructions
5692 488 GB
3
If you smell flue gas
Danger
Flue gas can lead to life-threat-
ening poisoning.
■ Shut down the heating system.
■ Ventilate the boiler room.
■ Close all doors leading to the
living space.
Working on the system
■ When using gas as fuel, also close the
main gas shut-off valve and safeguard
against unauthorised reopening.
■ Isolate the system from the power sup-
ply and check that it is no longer 'live',
e.g. by removing a separate fuse or by
means of a main isolator.
■ Safeguard the system against unau-
thorised reconnection.
!Please note
Electronic modules can be dam-
aged by electro-static dis-
charges.
Touch earthed objects, such as
heating or water pipes, to dis-
charge static loads.
Repair work
!Please note
Repairing components which ful-
fil a safety function can compro-
mise the safe operation of your
heating system.
Replace faulty components only
with original Viessmann spare
parts.
Ancillary components, spare and
wearing parts
!Please note
Spare and wearing parts which
have not been tested together
with the heating system can com-
promise its function. Installing
non-authorised components and
non-approved modifications/con-
version can compromise safety
and may invalidate our warranty.
For replacements, use only orig-
inal spare parts from Viessmann
or those which are approved by
Viessmann.
Safety instructions
Safety instructions (cont.)
5692 488 GB
4
Commissioning, inspection, maintenance
Steps – commissioning, inspection and maintenance.......................................... 5
Further details regarding the individual steps....................................................... 6
Air pressure switch............................................................................................ 21
Burner control unit
Burner control unit MPA 51.................................................................................. 22
Troubleshooting
Diagnosis.............................................................................................................. 29
Burner control unit flow chart........................................................................... 35
Burner control unit connection diagram.......................................................... 37
Component overview......................................................................................... 39
Control unit
Adjusting codes at the control unit....................................................................... 41
Parts list.............................................................................................................. 42
Report.................................................................................................................. 45
Specification....................................................................................................... 46
Keyword index.................................................................................................... 47
Index
Index
5692 488 GB
5
For further information regarding the individual steps, see the page indicated
Commissioning steps
Inspection steps
Maintenance steps Page
••• 1. Commissioning the system........................................... 6
•2. Checking the gas type.................................................... 7
•3. Conversion to natural gas LL........................................ 7
••• 4. Checking the static and the supply pressure.............. 8
••• 5. Checking the nozzle pressure....................................... 10
••• 6. Checking the CO2 content............................................. 12
••• 7. Checking the CO content
••• 8. Checking the flue gas temperature
• • 9. Checking the ionisation current.................................... 14
• • 10. Shutting down the system............................................. 15
• • 11. Checking the burner gauze assembly.......................... 16
• • 12. Checking the ignition and ionisation electrodes......... 17
• • 13. Cleaning the burner........................................................ 18
•14. Fitting the burner............................................................ 18
• • 15. Checking both gas train valves for tightness.............. 19
• • 16. Checking the filter insert (if installed) in the gas
supply pipe and replacing if required
••• 17. Checking all gas connections for tightness................ 19
•18. Final testing..................................................................... 20
•19. Operating and service documents................................ 20
Commissioning, inspection, maintenance
Steps – commissioning, inspection and maintenance
5692 488 GB
6
Commissioning the system
Danger
CO formation as a result of an
incorrect burner setting can have
serious health implications.
Carry out a CO test before and
after work on gas equipment.
Note
An examination of the burner setting with
the boiler heated up (min. 40 ºC) is
essential.
Also carry out tests at base load.
Boiler control unit service instruc-
tions
C
B
A
D
1. Check the heating system pressure.
2. Open the gas shut-off valve.
3. Switch ON the main isolator (outside
the installation room).
4. Switch ON the system ON/OFF
switch B at the control unit.
If fault indicator lamp A on the con-
trol unit illuminates and display C on
the burner control unit flashes, first
press reset button D on the burner
control unit.
Note
The system may enter a fault state
during commissioning because the
gas pipe may not yet contain suffi-
cient gas (fault indicator on control
unit illuminates). Vent the gas pipe
again and reset the burner control
unit.
Commissioning, inspection, maintenance
Further details regarding the individual steps
5692 488 GB
7
Checking the gas type
1. Determine the gas type and Wobbe
index (Wo) from your gas supply util-
ity.
■ 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 and c).
2. In the delivered condition, the burner
is set up for natural gas E. If required,
convert the burner to the other gas
type in accordance with details provi-
ded by your gas supply utility (see
page 7).
3. Record the gas type in the report (on
page 45).
Conversion to natural gas LL
(not in a and c)
C
B
A
01. Close the gas shut-off valve.
02. Switch OFF the control unit ON/OFF
switch.
03. Switch OFF the main isolator (out-
side the installation room) or the
power supply and prevent unauthor-
ised reconnection.
04. Release the cable fixings on the gas
pipe.
05. Release compression fittings A
and C remove the gas pipe.
06. Unscrew gas restrictor B.
07. Take gas restrictor B for natural
gas LL from the pack supplied and
screw on (for diameter see table on
page 46).
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
5692 488 GB
8
08. Refit the gas pipe. Insert gaskets
into fittings A and C.
Danger
Escaping gas leads to a risk
of explosion.
Check all fittings for gas
tightness.
09. Secure the gas train cables to the
gas pipe.
10. Affix the enclosed label "Adjusted
to ..." over the existing label.
11. Start the burner (see page 6).
Checking the static and the supply pressure
Static pressure
A
1. Close the gas shut-off valve.
2. Undo the screw inside test nipple
A, but do not remove.
3. Connect the pressure tester at test
nipple A.
4. Open the gas shut-off valve.
5. Measure the static pressure (max.
57.5 mbar).
6. Record the actual value in the report
(on page 45).
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
5692 488 GB
9
Supply pressure
A
1. Start the burner.
Note
For commissioning, see page 6.
Switch the burner to maximum out-
put. To do so, activate the emissions
test switch on the control unit.
2. Check the supply pressure (flow
pressure); see table on page 9.
Note
The supply pressure (flow pressure)
should be between 17.4 and
50 mbar. The gas pressure switch is
factory set to 10 mbar. Never alter
this setting.
3. Record the actual value in the report
(on page 45).
4. Close the gas shut-off valve.
5. Remove the pressure tester and
close test nipple A.
Supply pressure
(flow pressure)
Measures
below 15 mbar Make no adjustments and contact the gas supply utility.
15 to 17.4 mbar Caution! The boiler may only be operated temporarily with this
setting (emergency mode).
Notify the gas supply utility.
17.4 to 50 mbar Start the boiler.
above 50 mbar Install a separate gas pressure governor with zero off upstream
in the boiler system, and regulate the pressure to 20 mbar.
Notify the gas supply utility.
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
5692 488 GB
10
Checking the nozzle pressure
Preparing the test
A
B
C
D
E
1. Undo the screw inside test nipple
A, but do not remove.
2. Connect the pressure tester at test
nipple A.
3. Open the gas shut-off valve.
4. Start the burner (see page 6).
5. Press "S" D and "-" C simultane-
ously.
Display C will then show the follow-
ing:
■ Under status: "d" (= control stop)
■ Under service: Modulation level in
% ("00" = 100 % = upper output,
"00" = 0 % = lower output)
Testing the nozzle pressure at the upper output
1. Press "+" E until the service display
has incremented to "00" (=100 %).
2. Check the nozzle pressure in accord-
ance with the Wobbe index and the
output in the nozzle pressure table on
page 11.
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
5692 488 GB
Autres manuels pour MatriX
4
Ce manuel convient aux modèles suivants
1
Table des matières
Autres manuels Viessmann Cheminée intérieure
