Viessmann VITODENS 333-F WS3A Operating instructions

VIESMANN
Service instructions
for contractors
Vitodens 333-F
Type WS3A
Compact gas fired condensing boiler
6.6 to 26 kW natural gas and LPG version
For applicability, see the last page
VITODENS 333-F
5692 731 GB 4/2007 Please keep safe.

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
designed for qualified personnel.
&Work on gas equipment must only
be carried out by a qualified gas fit-
ter.
&Work on electrical equipment must
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.
Regulations
Observe the following when working
on this system
&all legal instructions regarding the
prevention of accidents,
&all legal instructions regarding
environmental 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.
If you smell gas
Danger
Escaping gas can lead to
explosions which may result in
serious injury.
&Never smoke. Prevent naked
flames and sparks. Never
switch lights or electrical
appliances 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
building.
&Shut off the electricity supply
to the building from a safe
place (outside the building).
If you smell flue gas
Danger
Flue gas can lead to life-threa-
tening poisoning.
&Shut down the heating sys-
tem.
&Ventilate the boiler room.
&Close all doors leading to the
living space.
Safety instructions
2
Safety instructions
5692 731 GB

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
supply 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
unauthorised reconnection.
!Please note
Electronic modules can be
damaged 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
fulfil a safety function can com-
promise 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
compromise its function. Instal-
ling non-authorised compo-
nents and non-approved
modifications/conversion can
compromise safety and may
invalidate our warranty.
For replacements, use only ori-
ginal spare parts from
Viessmann or those which are
approved by Viessmann.
Safety instructions (cont.)
3
Safety instructions
5692 731 GB

Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance................................... 5
Further details regarding the individual steps .............................................. 7
Coding
Code 1........................................................................................................ 41
Code 2........................................................................................................ 43
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 ...................................................................................................... 82
Function description
Constant temperature control unit ............................................................... 91
Weather-compensated control unit.............................................................. 93
Extensions for external connections............................................................ 95
Control functions ........................................................................................ 99
Remote control DIP switches ...................................................................... 105
Designs
Connection and wiring diagram –internal connections ................................ 107
Connection and wiring diagram –external connections ............................... 109
Parts lists .................................................................................................. 111
Commissioning/service reports ............................................................... 118
Specification............................................................................................. 119
Certificates
Declaration of conformity ............................................................................ 120
Manufacturer's certificate according to the 1st BImSchV [Germany]............. 121
Keyword index .......................................................................................... 122
Index
4
Index
5692 731 GB

For further information regarding the individual steps, see the page indicated
Commissioning steps
Inspection steps
Maintenance steps Page
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•01. Filling the heating system ................................................. 7
•02. Venting the boiler.................................................................. 8
•03. Venting the heating system............................................... 8
•04. Filling the siphon with water............................................. 9
••• 05. Checking all connections on the heating water
side and DHW side for leaks
•06. Checking the power supply connection
• • 07. Setting the time and date (if required) –only for
weather-compensated control units.............................. 9
•08. Selecting the language (if required) –only for
weather-compensated control units.............................. 10
••• 09. Pivoting down the control unit for commissioning
and maintenance work........................................................ 11
• • 10. Checking the gas type......................................................... 11
•11. Gas type conversion ............................................................ 12
••• 12. Function sequence and possible faults ....................... 13
••• 13. Checking the static and supply pressure .................... 14
•14. Setting the maximum output ............................................ 16
•15. Checking the balanced flue system soundness
(annular gap check) ............................................................. 17
• • 16. Removing the burner and checking the burner
gasket (replace gasket every two years)...................... 18
• • 17. Checking the burner gauze assembly........................... 19
• • 18. Checking and adjusting the ignition and ionisation
electrodes ................................................................................ 20
• • 19. Cleaning the combustion chamber/heating
surfaces and fitting the burner ........................................ 21
Steps - commissioning, inspection and maintenance
5
Commissioning, inspection, maintenance
5692 731 GB

Commissioning steps
Inspection steps
Maintenance steps Page
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• • 20. Checking the condensate drain and cleaning the
siphon........................................................................................ 22
• • 21. Checking the neutralising system (if installed)
•22. Testing the anode earth current with an anode
tester.......................................................................................... 22
•23. Cleaning the DHW cylinder ............................................... 23
•24. Checking and replacing the magnesium anode (if
required)................................................................................... 23
•25. Returning the DHW cylinder into use ............................ 24
• • 26. Checking the diaphragm expansion vessel and
system pressure.................................................................... 24
••• 27. Checking the function of all safety valves
••• 28. Checking the tightness of electrical connections
••• 29. Checking all gas equipment for soundness at
operating pressure............................................................... 25
••• 30. Flue gas emissions test...................................................... 25
••• 31. Checking the ionisation current ..................................... 27
••• 32. Checking the external LPG safety valve (if
installed)
•33. Matching the control unit to the heating system ...... 28
•34. Adjusting the heating curves (only for weather-
compensated control units).............................................. 33
•35. Connecting the control unit to the LON system
(only for weather-compensated control units) .......... 36
•36. Instructing the system user .............................................. 38
•37. Scanning and resetting the "Service" display ........... 38
••• 38. Locking the control unit and fitting the front
panels........................................................................................ 40
Steps - commissioning, inspection and . . . (cont.)
6
Commissioning, inspection, maintenance
5692 731 GB

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 3.0 mmol/l e.g. use a small
softening system for heating water (see Vitoset price list).
&An antifreeze additive suitable for heating systems can be mixed with
the fill water.
1. Check the inlet pressure of the dia-
phragm expansion vessel.
2. Close the gas shut-off valve.
3. Fill the heating system at the fill
valve in the heating return (on the
connection set or on site).
(Minimum system pressure
> 0.8 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 cen-
tral position, and the system will be
completely filled.
4. If the control unit was already
switched ON before filling began:
Switch ON the control unit and acti-
vate the filling program via code
"2F:2".
Note
To call up coding level 1 and for
setting the coding address, see
page 41.
For function and details of the fill
program, see page 100.
Whilst the fill program is running,
the display shows "bF"
(Vitotronic 100) or "Befüllung"
(filling) (Vitotronic 200).
5. Close the boiler fill & drain valve.
6. Set code "2F:0".
Further details regarding the individual steps
7
Commissioning, inspection, maintenance
5692 731 GB

Venting the boiler
1. Close the shut-off valves on the
heating water side.
2. Connect the drain hose on valve
Awith a drain.
3. Open valve Aand filling valve in
the heating return and vent using
mains pressure until no more air
noise can be heard.
4. Close valve Aand the fill valve in
the heating return and open the
shut-off valves on the heating
water side.
Venting the heating system
1. Close the gas shut-off valve and
switch ON the control unit.
2. Activate the venting program via
code "2F:1".
Note
To call up coding level 1 and for
setting the coding address, see
page 41.
For function and sequence of the
venting program, see page 100.
Whilst the venting program is run-
ning, the display shows "EL"
(Vitotronic 100) or "Entlüftung"
(venting) (Vitotronic 200).
3. Check the system pressure.
Further details regarding the individual steps (cont.)
8
Commissioning, inspection, maintenance
5692 731 GB

Filling the siphon with water
1. Remove the retaining clip and
siphon A.
2. Fill the siphon with water.
3. Fit siphon Aand secure with the
retaining clip.
Setting the time and date (if required) –only for weather-
compensated control units
Note
&During commissioning, or after a
prolonged time out of use, it may be
necessary to reset the time and
date, if the time flashes in the dis-
play.
&During commissioning these terms
appear in German (delivered condi-
tion):
Time (see step 1)
Date (see step 2)
Press the following keys:
1. a/bfor the current time.
2. dto confirm; "Datum" (date)
is displayed.
3. a/bfor the current date.
4. dto confirm.
Further details regarding the individual steps (cont.)
9
Commissioning, inspection, maintenance
5692 731 GB

Selecting the language (if required) –only for weather-com-
pensated control units
Note
When the unit is first taken into opera-
tion the display is in German (default
language setting):
Select heating circuit (see step 1.)
Outside temperature (see step 3.)
Press the following keys:
1. c"Heizkreis wählen" (select
heating circuit) is displayed.
2. dto confirm; wait approx. 4 s.
3. cpress this button again,
"Außentemperatur" (outside
temperature) is displayed.
4. bfor the required language.
5. dto confirm.
Further details regarding the individual steps (cont.)
10
Commissioning, inspection, maintenance
5692 731 GB