Viessmann Vitodens 200-W System Istruzioni operative
Service instructions
for contractors
VIESMANN
Vitodens 200-W
Type WB2B, 45 and 60 kW
Wall mounted gas fired condensing boiler
Natural gas and LPG version
For applicability, see the last page
VITODENS 200-W
5692 760 GB 11/2008 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 760 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 760 GB
4
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance.......................................... 6
Further details regarding the individual steps....................................................... 8
Codes
Code 1.................................................................................................................. 38
Code 2.................................................................................................................. 41
Resetting codes to their delivered condition......................................................... 62
Service scans
Service level overview ......................................................................................... 63
Temperatures, boiler coding card and brief scans .............................................. 64
Checking outputs (relay test)................................................................................ 67
Scanning operating conditions and sensors ........................................................ 68
Troubleshooting
Fault display......................................................................................................... 71
Fault codes........................................................................................................... 73
Repairs................................................................................................................. 83
Function description
Constant temperature control unit........................................................................ 91
Weather-compensated control unit...................................................................... 92
Extensions for external connections (accessories).............................................. 94
Control functions.................................................................................................. 98
Remote control DIP switches............................................................................... 104
Electronic combustion control unit........................................................................ 105
Designs
Connection and wiring diagram – internal connections ....................................... 107
Connection and wiring diagram – external connections....................................... 108
Parts lists............................................................................................................ 110
Commissioning/service reports
............................................................................................................................. 115
Specification....................................................................................................... 116
Certificates
Declaration of conformity...................................................................................... 118
Manufacturer's certificate according to the 1st BImSchV [Germany]................... 118
Index
Index
5692 760 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. Venting the boiler........................................................... 9
•3. Venting the heating system........................................... 9
•4. Filling the siphon with water......................................... 10
••• 5. Checking all connections on the heating water side
and DHW side for leaks
•6. Checking power supply connection
• • 7. Setting the time and date (if required) – only for
weather-compensated control units............................. 11
•8. Selecting the language (if required) – only for weather-
compensated control units............................................ 12
• • 9. Checking the gas type.................................................... 12
•10. Gas type conversion (only for operation with LPG).... 13
••• 11. Function sequence and possible faults....................... 13
••• 12. Checking the static and supply pressure..................... 15
•13. Setting the maximum output ........................................ 17
•14. Checking the balanced flue system for tightness
(annular gap check)........................................................ 18
• • 15. Removing the burner and checking the burner gasket
(replace gasket every 2 years)...................................... 19
• • 16. Checking the burner gauze assembly & replacing, if
required........................................................................... 21
• • 17. Checking and adjusting the ignition and ionisation
electrodes........................................................................ 22
• • 18. Cleaning the combustion chamber/heat exchanger
and installing the burner................................................ 22
• • 19. Checking the condensate drain and cleaning the
siphon.............................................................................. 24
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance
5692 760 GB
7
Commissioning steps
Inspection steps
Maintenance steps Page
• • 20. Checking the neutralising system (if installed)
• • 21. Checking the diaphragm expansion vessel and
system pressure............................................................. 24
••• 22. Checking function of safety valves
••• 23. Checking electrical connections for tightness
••• 24. Checking gas equipment for tightness at operating
pressure .......................................................................... 24
••• 25. Flue gas emissions test................................................. 25
••• 26. Checking the external LPG safety valve (if installed)
•27. Matching the control unit to the heating system ........ 26
•28. Adjusting the heating curves (only for weather-
compensated control units)........................................... 31
•29. Connecting the control unit to the LON system (only
for weather-compensated control units)...................... 34
•30. Instructing the system user........................................... 36
•31. Scanning and resetting the "Service" display............. 37
Commissioning, inspection, maintenance
Steps - commissioning, inspection and… (cont.)
5692 760 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 a water hardness in excess of the following values, e.g.
with a small softening system for heating water (see the Viessmann Vitoset
pricelist):
– Vitodens 200-W to 45 kW: 3.0 mol/m3
– Vitodens 200-W from 60 kW and multi-boiler systems: 2.0 mol/m3
■ An antifreeze additive suitable for heating systems can be mixed with the
fill water. The antifreeze manufacturer must verify its suitability.
A
1. Check the pre-charge pressure of the
diaphragm expansion vessel.
2. Close the gas shut-off valve.
3. Fill the heating system at the boiler fill
& drain valve A (on the connection
set, accessories or on-site). Minimum
system pressure > 1.0 bar.
4. Close boiler fill & drain valve A.
Commissioning, inspection, maintenance
Further details regarding the individual steps
5692 760 GB
9
Venting the boiler
B
A
1. Close the shut-off valves on the heat-
ing water side.
2. Connect the drain hose at the boiler
fill & drain valve B (on the connec-
tion set, accessories or on-site).
3. Open valves A and B and vent
using mains pressure until no more
air noise is audible.
4. Close valves A and B and open
the heating water shut-off valves.
Venting the heating system
1. Close the gas shut-off valve and
switch ON the control unit ON/OFF
switch.
2. Activate the venting program via cod-
ing address "2F:1".
Note
To call up code 1 and for setting the
coding address, see page 38.
For function and sequence of the
venting program, see page 99.
Whilst the venting program runs, the
display shows "EL" (constant tem-
perature control unit) or "Entlüf-
tung" (Venting) (weather-compen-
sated control unit).
3. Check the system pressure.
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
5692 760 GB
10
Filling the siphon with water
ACB
1. Remove retaining clip A and pull out
insert B.
2. Fill siphon C with water and reas-
semble.
Note
Install the supply hose the correct
way round.
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
5692 760 GB
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