Viessmann Vitodens 200-W System Instrucciones de funcionamiento
Service instructions
for contractors
VIESMANN
Vitodens 200-W
Type WB2C
Wall mounted gas condensing boiler
4.8 to 35 kW natural gas and LPG version
Gas Council no.:
41-819-14; 41-819-15; 41-819-16; 41-819-17 (system boilers)
47-819-09; 47-819-10; 47-819-11 (combi boilers)
For applicability, see the last page
VITODENS 200-W
5692 857 GB 4/2010 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 857 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 857 GB
4
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance.......................................... 6
Further details regarding the individual steps....................................................... 8
Code 1
Calling up coding level 1...................................................................................... 39
General/Group 1................................................................................................... 40
Boiler/Group 2...................................................................................................... 42
DHW/Group 3....................................................................................................... 43
Solar/Group 4....................................................................................................... 44
Heating circuit 1, heating circuit 2, heating circuit 3/Group 5............................... 46
Code 2
Calling up coding level 2...................................................................................... 53
General/Group 1................................................................................................... 54
Boiler/Group 2...................................................................................................... 62
DHW/Group 3....................................................................................................... 64
Solar/Group 4....................................................................................................... 66
Heating circuit 1, heating circuit 2, heating circuit 3/Group 5............................... 73
Diagnosis and service scans
Calling up the service menu................................................................................. 83
Diagnosis.............................................................................................................. 83
Checking outputs (relay test)................................................................................ 89
Troubleshooting
Fault display......................................................................................................... 91
Fault codes........................................................................................................... 93
Repairs................................................................................................................. 105
Function description
Constant temperature control unit........................................................................ 115
Weather-compensated control unit...................................................................... 116
Internal extensions (accessories)......................................................................... 118
External extensions (accessories)........................................................................ 120
Control functions.................................................................................................. 124
Allocating heating circuits to the remote control................................................... 132
Electronic combustion controller.......................................................................... 132
Designs
Connection and wiring diagrams – internal connections ..................................... 134
Connection and wiring diagram – external connections....................................... 136
Index
Index
5692 857 GB
5
Parts lists............................................................................................................ 138
Commissioning/service reports........................................................................ 144
Specification....................................................................................................... 145
Certificates
Declaration of conformity...................................................................................... 147
Manufacturer's certificate according to the 1st BImSchV [Germany]................... 148
Keyword index.................................................................................................... 149
Index
Index (cont.)
5692 857 GB
6
For further information regarding the individual steps, see the page indicated
Commissioning steps
Inspection steps
Maintenance steps Page
•1. Filling the heating system.............................................. 8
•2. Checking power supply connection
•3. Selecting the language (if required) - only for weather-
compensated control units............................................ 9
• • 4. Setting the time and date (if required) - only for
weather-compensated control units............................. 9
• • 5. Setting the time and date (if required) - for constant
temperature control units.............................................. 10
•6. Venting the boiler........................................................... 10
•7. Venting the heating system........................................... 11
•8. Filling the siphon with water......................................... 12
••• 9. Checking all connections on the heating water side
and DHW side for leaks
•10. Designating heating circuits – only for weather-
compensated control units............................................ 12
• • 11. Checking the gas type.................................................... 12
•12. Gas type conversion (only for operation with LPG).... 13
••• 13. Function sequence and possible faults....................... 13
••• 14. Checking the static and supply pressure..................... 15
•15. Setting the maximum output......................................... 17
•16. Checking the balanced flue system tightness (annular
gap check)....................................................................... 18
• • 17. Burner removal .............................................................. 19
• • 18. Checking the burner gasket and the burner gauze
assembly......................................................................... 19
• • 19. Checking and adjusting the ignition and ionisation
electrodes........................................................................ 21
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance
5692 857 GB
7
Commissioning steps
Inspection steps
Maintenance steps Page
• • 20. Cleaning the heat exchanger and installing the
burner.............................................................................. 21
• • 21. Checking the condensate drain and cleaning the
siphon.............................................................................. 23
• • 22. Checking the neutralising system (if installed)
•23. Checking the flow limiter (only for gas combi
boilers)............................................................................. 24
• • 24. Checking the diaphragm expansion vessel and
system pressure............................................................. 24
••• 25. Checking the function of safety valves
••• 26. Checking electrical connections for firm seating
••• 27. Checking all gas equipment for tightness at operating
pressure........................................................................... 25
• • 28. Checking the combustion quality................................. 25
••• 29. Checking the external LPG safety valve (if installed)
•30. Matching the control unit to the heating system......... 27
•31. Adjusting the heating curves (only for weather-
compensated control units)........................................... 32
•32. Connecting the control unit to the LON system (only
for weather-compensated control units)...................... 35
•33. Scanning and resetting the Service display................ 37
•34. Instructing the system user........................................... 38
Commissioning, inspection, maintenance
Steps - commissioning, inspection and… (cont.)
5692 857 GB
8
Filling the heating system
!Please note
Unsuitable fill water increases the level of deposits and corrosion and may
lead to boiler damage.
■ Thoroughly flush the entire heating system prior to filling it with water.
■ Only use fill water of potable quality.
■Soften fill water with hardness exceeding 300 ppm (3.0 mol/m3), e.g. using
a small softening system for heating water (see Viessmann Vitoset pricelist).
■ An antifreeze additive suitable for heating systems can be added to the fill
water. The antifreeze manufacturer must verify its suitability.
1. Check the pre-charge pressure of the
diaphragm expansion vessel.
2. Close the gas shut-off valve.
3. Fill the heating system via boiler drain
& fill valve A in the heating return (at
the connection set or on site) (mini-
mum system pressure > 1.0 bar).
Note
If the control unit has not been
switched ON prior to filling the sys-
tem, then the servomotor of the
diverter valve will still be in its central
position, and the system will be com-
pletely filled.
Note
If an external filling loop is fitted, it
must meet the requirements of the
Water Fittings Regulations 1999 Sec-
tion G 24.1 and G 24.2.
Commissioning, inspection, maintenance
Further details regarding the individual steps
5692 857 GB
9
4. If the control unit had already been
switched ON before filling began:
Switch control unit ON and activate
filling function (see next chapter).
5. Close boiler drain & fill valve A.
Activating filling function with
weather-compensated control units:
1. Press OK and å simultaneously
for approx. 4 s.
2. "Service functions"
3. "Filling"
4. Ending filling function:
Press OK or ä.
Activating filling function with con-
stant temperature control units:
1. Press OK and å simultaneously
for approx. 4 s.
2. Select "4" with Ú and confirm with
OK.
When the filling function is active, "bF
on" will be displayed.
3. Ending filling function:
Press ä.
Selecting the language (if required) - only for weather-compen-
sated control units
Note
At the commissioning stage, the display
is in German (default setting)
Extended menu:
1. å
2. "Settings"
3. "Language"
Sprache
Cesky CZ
Deutsch DE
Dansk
English
DK
GB
Wählen mit
Ø
ç
4. Set the required language with /.
Setting the time and date (if required) - only for weather-com-
pensated control units
During commissioning, or after pro-
longed time out of use, the time and date
need to be reset.
Extended menu:
1. å
2. "Settings"
3. "Time / Date"
4. Set current time and date.
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
5692 857 GB
10
Setting the time and date (if required) - for constant temperature
control units
The time and date need to be reset dur-
ing commissioning or after prolonged
time out of use. After starting the system,
the display flashes the time ( ).
Press the following keys:
1. / for the required time.
2. OK to confirm; the new time unit is
saved, appears.
3. / for the required date.
4. OK to confirm; the new date is
saved.
Venting the boiler
B
A
1. Close the shut-off valves on the heat-
ing water side.
2. Connect the drain hose between top
valve B and a drain outlet.
3. Open valves A and B, and vent at
mains pressure until no sound of
escaping air can be heard.
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
5692 857 GB
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44
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