Viessmann | WS3A | Operating instructions | Viessmann WS3A Operating instructions

Viessmann WS3A Operating instructions
Service instructions
VIESMANN
for heating engineers
Vitodens 333
Type WS3A, 6.6 to 26.0 kW
Compact gas fired condensing boiler
natural gas and LPG version
See applicability on the last page
VITODENS 333
5692 548 GB
3/2004
Please keep safe
Safety instructions
Safety instructions
Please follow these safety instructions closely to prevent accidents and
material losses.
Safety instructions explained
Danger
This symbol warns against the
risk of injury.
!
Important information
This symbol warns against the
risk of material losses and
environmental pollution.
&
all legal instructions regarding the
prevention of accidents,
& the TRGI, TRF and special regulations, e.g. those of the BDH,
& all legal instructions regarding
environmental protection,
& the Code of Practice by relevant
trade associations and all local regulations.
If you notice a smell of gas
Note
Details identified by the words "Note"
contain additional information.
Warranty
All warranty rights are void if these
service instructions are not observed.
Target group
These service instructions are exclusively designed for qualified personnel.
Work on gas equipment must only be
carried out by a registered gas fitter.
Electrical work 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.
Danger
Escaping gas can cause explosions which may lead to serious injury.
& Do not smoke. Prevent
naked flames and sparks.
Never switch electrical lights
or equipment.
& Open windows and doors.
& Close the gas shut-off valve.
& Remove all personnel from
the danger zone.
& Observe the safety regulations of your local gas supplier which can be found on
the gas meter.
& Notify your heating contractor from outside the building.
Regulations
5692 548 GB
Observe the following during service
work:
2
Safety instructions
Safety instructions (cont.)
If you smell flue gas
Danger
Flue gas may lead to life-threatening poisoning.
& Shut down the heating system.
& Ventilate the boiler room.
& Close all doors leading to the
living space.
Repair work
&
Isolate the system from mains supply and check that is is no longer
'live', e.g. by removing a separate
fuse or by means of a mains electrical isolator.
& Safeguard the system against
unauthorised reconnection.
& When using gas as fuel, also close
the main gas shut-off valve and
safeguard against unauthorised
reopening.
Ancillary components, spare and
wearing parts
!
Important information
Components which are not
tested with the heating system,
the installation of nonapproved spare parts and
unauthorised conversion may
lead to damage to the heating
system, which may affect their
function and limit our warranty.
For conversions or replacements, use only original parts
from Viessmann or those spare
parts which are approved by
Viessmann.
5692 548 GB
It is not permitted to carry out repairs
on parts that fulfil a safety function.
Use only original Viessmann spare
parts, or equivalent parts that have
been approved by Viessmann.
Service work on the heating system
3
Index
Index
Initial start-up, inspection, maintenance
Steps - initial start-up, inspection and maintenance .....................................
Further details regarding the individual steps ..............................................
5
7
Coding
Code 1........................................................................................................ 39
Code 2........................................................................................................ 41
Resetting the coding to the as delivered condition ...................................... 61
Service scans
Service level summary ................................................................................
Temperatures, boiler coding card and brief scans .......................................
Testing outputs (relay test) ..........................................................................
Scanning operating conditions and sensors ................................................
62
63
67
69
Troubleshooting
Call up fault history of fault codes ................................................................
Call up current fault codes ..........................................................................
Checking and acknowledging faults ............................................................
Repairs ......................................................................................................
72
72
74
84
Function description
Constant temperature control unit ...............................................................
Weather-compensated control unit..............................................................
Internal extension H1 ..................................................................................
Extensions for external connections (accessory) .........................................
Control functions ........................................................................................
95
97
99
100
103
Designs
Connection and wiring diagrams – internal connections .............................. 108
Connection and wiring diagrams – external connections .............................. 110
Parts lists .................................................................................................. 112
Commissioning/service reports ............................................................... 120
Certificates
Declaration of conformity ............................................................................ 127
Manufacturer's certificate according to the 1st BImSchV [Germany]............. 128
Keyword index .......................................................................................... 129
4
5692 548 GB
Specification ............................................................................................. 126
Initial start-up, inspection, maintenance
Steps - initial start-up, inspection and maintenance
For further instructions on individual steps, see pages indicated
!
•
•
•
•
•
•
Commissioning steps
!
Inspection steps
Page
!
1. Filling the heating system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
2. Venting the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
3. Venting the heating system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
4. Filling the siphon with water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
5. Checking the electrical mains connection
6. Language selection (if required) - only for the
weather-compensated control units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
•
•
•
7. Pivot the control unit down to carry out
commissioning and maintenance work . . . . . . . . . . . . . . . . . . . . . . . . 10
•
•
•
•
•
•
8. Function sequence and possible faults . . . . . . . . . . . . . . . . . . . . . . . 10
•
•
•
•
•
•
•
•
•
•
14. Check all connections on the primary and DHW
side for leaks
•
•
•
15. Checking the burner (recording values on page
120 of the commissioning report)
9. Checking the gas type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
10. Changing the gas type (see separate installation
instructions)
11. Checking static and supply pressure
...........................
13
12. Checking the CO 2 settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
13. Setting the max. output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
•
5692 548 GB
Maintenance steps
16. Checking the balanced flue system for soundness
(annular gap check) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
•
•
17. Removing the burner and checking the burner
gasket (replace gasket every two years) . . . . . . . . . . . . . . . . . . . . . . 19
•
•
•
•
18. Checking the burner gauze assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
19. Checking and adjusting the ignition and ionisation
electrodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5
Initial start-up, inspection, maintenance
Steps - initial start-up, inspection and maintenanc . . . (cont.)
!
Commissioning steps
!
•
Inspection steps
Page
!
•
20. Cleaning the combustion chamber/Cleaning the
heating surfaces and installing the burner . . . . . . . . . . . . . . . . . 22
•
•
21. Checking the condensate drain and cleaning the
siphon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
•
•
•
22. Checking the neutralising system (if installed)
•
•
24. Cleaning the DHW cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
26. Taking the DHW cylinder back into use . . . . . . . . . . . . . . . . . . . . . . . . 25
23. Testing anode earth current with an anode test
device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
25. Checking and replacing the magnesium anode (if
required) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
•
•
•
•
•
•
•
•
•
•
•
•
•
28. Checking the function of all safety valves
•
•
•
•
•
•
31. Checking the ionisation current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
27. Checking the diaphragm expansion vessel and
system pressure
29. Checking tightness of electrical connections
30. Checking all gas equipment for soundness at
operating pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
32. Checking the external LPG safety valve (if
installed)
•
•
33. Matching the control unit to the heating system . . . . . . 27
•
35. Implementing a user check (in conjunction with
the LON system) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
•
36. Adjusting heating curves (only for weathercompensated control units) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
•
37. Instructing the system user . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
34. Connecting the control unit to the LON system
(only for weather-compensated control units) . . . . . . . . . . 32
•
6
Maintenance steps
38. Scanning and resetting the maintenance display . . . . 37
5692 548 GB
Initial start-up, inspection, maintenance
Further details regarding the individual steps
Filling the heating system
1. Check the charge pressure of the
diaphragm expansion vessel.
2. Close the gas shut-off valve.
3.
!
Important information
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 with water.
& Only use fill water of potable quality.
& Soften fill water harder
than 20 cdH (3.58 mmol/l).
For suitable means of
water softening, see the
Vitoset pricelist.
& An anti-freeze additive
suitable for heating systems can be mixed with
the fill water.
4. If the control unit had already been
switched ON before filling began:
Start the control unit and in code 1,
set coding address 2F:2.
The diverter valve will then be in its
central position.
Note
To call up code 1 and for setting the
coding address, see page 39.
Whilst filling is in progress, the display shows bF (constant temperature control unit) or Filling
(weather-compensated control
unit).
Continue filling the system.
5. Close the boiler fill & drain valve.
6. Set coding address 2F:0.
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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
The diverter valve actuator will be
in the central position, and the system will be completely filled, if the
control unit has not been switched
ON before the system was filled.
7
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
Venting the boiler
1. Close the shut-off valves on the
heating water side.
2. Connect the drain hose on valve A
with a drain outlet.
3. Open valve A and fill valve in the
heating return, and vent at mains
pressure, until no sound of escaping air can be heard anymore.
4. Close valve A and fill valve in the
heating return, and open the primary shut-off valves.
Venting the heating system
1. Close the gas shut-off valve and
start the control unit.
2. Activate the venting program via
coding address 2F:1.
Note
To call up code 1 and for setting the
coding address, see page 39.
For function and sequence of the
venting program, see page 104.
Whilst venting is in progress, the
display shows EL (constant temperature control unit) or Venting
(weather-compensated control
unit).
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3. Check the system pressure.
8
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
Filling the siphon with water
1. Remove the retaining clip and
siphon A.
2. Fill the siphon with water.
3. Fit siphon A and secure with the
retaining clip.
Language selection (if required) - only for the weather-compensated control units
1. Press c.
3. Confirm with d.
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2. Select the required language with
b.
9
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
Pivot the control unit down to carry out commissioning and
maintenance work
1. Open flap A.
3. Release the side screws and pivot
control unit C down with its retaining frame D.
2. Release the side closures B and
pivot control unit C forward.
Function sequence and possible faults
Display screen
Control unit
issues a heat
demand
10
No
Remedy
Set value
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For further details regarding faults, see page 74.
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
Yes
Fan starts
No
After approx.
51 seconds
Fault
Check cables and
plug-in connections
F9
Yes
Differential pressure sensor
enables start
(0.75 V across
terminals X8.5
and X8.6)
No
After approx.
51 seconds
Fault
E6
Check fan cables
and fan plug-in
connections,
check fan
Yes
Ignition
No
Fault
F4
Check the ignition
module (control
voltage 230 V
across plugs X2.1
and X2.2)
No
Fault
F4
Check the gas
combination valve
(control voltage
230 V), check the
gas supply pressure
Fault
Check electrode
adjustment and
check the gas
pipe for airlocks
Yes
Gas combination
valve opens
5692 548 GB
Yes
Ionisation current builds
(higher than
5 µA)
Symbol A
No
F4
11
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
Yes
Operational burner
Stops below set
boiler temperature and immediately restarts
again
Check flue gas
system for soundness (flue gas
recirculation),
check gas flow
pressure
Checking the gas type
1. Enquire about the gas type and
Wobbe index (Wo) from your local
mains gas or LPG supplier.
Note
In the as delivered condition, Vitodens 333 is set up for natural gas
E.
The boiler can be operated in the
Wobbe index range 12.0 to
16.1 kWh/m 3 (43.2 to 58.0 MJ/m 3 ).
2. Compare the gas category (gas
type) and gas group with the details
on the burner label.
3. If these details do not match the
fuel provided, the burner must be
converted according to the details
provided by the mains gas or the
LPG supplier.
See separate conversion kit
installation instructions.
After conversion to
& Natural gas LL
The boiler can be operated in the
Wobbe index range 10.0 to
13.1 kWh/m 3 (36.0 to 47.2 MJ/
m 3).
& LPG P
The boiler can be operated in the
Wobbe index range 21.4 to
22.5 kWh/m 3 (76.9 to 81.0 MJ/
m 3).
Note
To call up code 1 and for setting the
coding address, see page 39.
12
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4. Set the gas type via coding
address 1E at the control unit.
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
5. Record the gas type in the commissioning/service report on page
120.
Checking static and supply pressure
Danger
Higher CO emissions can lead to poisoning.
Measure the CO value before and after any work on gas equipment to
prevent any health hazards and to ensure the perfect operational condition of the system.
Operation with LPG
Flush the LPG tank twice during commissioning/replacement. Thoroughly vent
the tank and gas lines after flushing.
1. Close the gas shut-off valve.
2. Release the screw inside test nipple PE A on the gas combination
valve, but do not remove, and connect the pressure gauge.
3. Open the gas shut-off valve.
4. Check the static pressure; it should
be a max. of 57.5 mbar. Record the
actual value in the service report.
5. Start up boiler.
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Note
During commissioning, the boiler
can enter a fault state because of
airlocks in the gas pipe. After
approx. 5 seconds, press E to
reset the burner.
13
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
6. Check the supply (flow) pressure; it
should be
& 20 mbar for natural gas,
& 50 mbar for LPG.
Note
Use suitable test equipment with a
resolution of at least 0.1 mbar to
measure the supply pressure.
Record the actual value in the service report.
Take the action shown in the table.
Supply (flow)
pressure for natural gas
below 17.4 mbar
Supply (flow)
pressure for
LPG
below 42.5 mbar
17.4 to 57.5 mbar
42.5 to
57.5 mbar
in excess of
57.5 mbar
in excess of
57.5 mbar
Remedy
Do not start up. Notify your mains gas or
LPG supplier.
Start up boiler.
Install a separate gas governor downstream of the system and regulate the
pressure to 20 mbar for natural gas, or
50 mbar for LPG. Notify your mains gas
or LPG supplier.
7. Shut down the boiler, close the gas
shut-off valve, remove the pressure
gauge, and close test nipple A
with the screw.
Danger
Gas escaping from the test
nipple leads to a risk of
explosion.
Check test nipple A for
soundness.
14
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8. Open the gas shut-off valve and
start the boiler.
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
Checking the CO2 settings
Vitodens 333 is set up in the factory for natural gas E, and can be converted to
natural gas LL or LPG P using a conversion kit.
During commissioning or maintenance, check the CO 2 level at the boiler adaptor.
Note
The MatriX burner for Vitodens 333 is preset for the entire gas group. Therefore,
the burner requires no further setting or adjustment.
Subject to the Wobbe index, the CO 2 content fluctuates between
& 6.6 to 10.0 % for natural gas E
& 7.0 to 10.0 % for natural gas LL and
& 8.5 to 10.5 % for LPG P.
5692 548 GB
Compare the actual CO 2 value with the above CO 2 value ranges for the individual gas groups (check the gas group with your mains gas or LPG supplier).
If the actual CO 2 value deviates by more than 1 % for natural gas or 0.5 % for
LPG, proceed as follows:
& Check whether the correct gas restrictor has been installed.
& Check the balanced flue system for soundness, see page 18.
15
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
1. Connect a flue gas analyser at the
flue gas aperture A on the boiler
adaptor.
2. Open the gas shut-off valve, commission the boiler and create a heat
demand.
3. Select the lower rated output.
Constant temperature control unit:
& Press both keys 9 and d simultaneously until the display shows
1.
Weather-compensated control unit:
& Press both keys 9 and d simultaneously until the display shows
Relay test.
& With a/b in the display, select
Basic load.
4. Check the CO 2 content. Should the
actual value deviate by more than
1 % from the above range, implement steps from page 15 (possibly
replace the burner).
5. Enter actual values into the service
report.
6. Set the upper rated output.
Constant temperature control unit:
& With a/b in the display, select
2.
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Weather-compensated control unit:
& With a/b in the display, select
Full load.
16
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
7. Check the CO 2 content. Should the
actual value deviate by more than
1 % from the above range, implement steps from page 15 (possibly
replace the burner).
8. After testing, press d.
9. Enter actual values into the service
report.
Setting the max. output
Note
The max. output can be limited for heating operation. You can limit the output
via the modulation range. The control pressure acts as standard value for setting the required output.
1. Start up boiler.
4. Confirm the set value with d.
5. Record the settings for max. output
on the additional type plate
included with the technical documentation. Affix the type plate next
to the original type plate on top of
the boiler.
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2. Press both K and F simultaneously until 100 flashes on the
display, (equals 100 % of the rated
output) and A appears. On
weather-compensated control
units, the display additionally
shows Max. output.
3. With a/b select the required
value in % of rated output as max.
output.
17
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
Checking the balanced flue system for soundness (annular
gap check)
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A Combustion air aperture
For balanced flue systems tested
together with the gas fired wall
mounted boiler, some Federal States
(e.g. Northrhein-Westphalia) waive
the requirement for a soundness test
(overpressure test) during commissioning by the flue gas inspector.
For such cases we recommend that
your heating contractor carries out a
simple soundness test during the
initial start-up of your system. For
this, it would be sufficient to check the
CO 2 concentration in the combustion
air at the annular gap in the balanced
flue pipe.
The flue pipe is deemed to be sound,
if the CO 2 concentration of the combustion air is no higher than 0.2 % or
the O 2 concentration is at least
20.6 %.
If actual CO2 values are higher or O 2
values are lower, carry out a pressure
test on the flue pipe at a static pressure of 200 Pa.
18
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
Removing the burner and checking the burner gasket
(replace gasket every two years)
1. Switch OFF the control unit ON/
OFF switch and the mains electrical supply.
2. Close the gas shut-off valve and
safeguard against reopening.
3. Pull electrical cables off fan motor
A, differential pressure sensor
B, gas valve C, ionisation electrode D, ignition unit E and earth
F.
5. Release four nuts H and remove
the burner.
!
Important information
Prevent damage to the wire
mesh.
Never rest the burner on the
gauze assembly.
6. Check the burner gasket K for
damage.
Generally, replace the burner gasket every two years.
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4. Release gas connection pipe G
fixing screws and fittings.
19
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
Checking the burner gauze assembly
Replace the burner gauze assembly if
the wire mesh is damaged.
1. Remove electrodes A.
2. Remove thermal insulation ring B.
3. Release the six Torx screws C
and remove the burner gauze
assembly D.
Note
Torque: 3.5 Nm
6. Refit a new thermal insulation
ring B.
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4. Remove the old gauze assembly
gasket E.
5. Insert a new burner gauze assembly with a new gasket, and secure
with six Torx screws.
20
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
Checking and adjusting the ignition and ionisation electrodes
A Ignition electrodes
B Ionisation electrode
1. Check the electrodes for wear and
contamination.
3. Check all clearances. If the gaps
are not as specified or the electrodes are damaged, replace and
align the electrodes together with
new gaskets A. Tighten the electrode fixing screws with 2 Nm.
2. Clean the electrodes with a small
brush (not with a wire brush) or
emery paper.
Important information
Wire mesh
do not damage.
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!
21
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
Cleaning the combustion chamber/Cleaning the heating surfaces and installing the burner
1. If required, clean combustion
chamber and heating surfaces A
with a brush or flush with water.
!
Important information
Scratches on parts which
are in contact with flue
gases, can lead to corrosion.
Only use plastic brushes
and NOT wire brushes.
Apply a solvent-/potassium-free
cleaning agent if residues remain:
& Remove soot deposits with alkaline cleaning agents with additional surfactants (e.g. Fauch
600).
& Remove coatings and surface
discolouration (yellow-brown)
with slightly acidic, chloride-free
cleaning agents based on phosphoric acid (e.g. Antox 75 E).
& Thoroughly flush with water.
Note
Fauch 600 and Antox 75 E are supplied by
Hebro Chemie GmbH
Rostocker Straße 40
D 41199 Mönchengladbach
c: Intec Bassersdorf AG
Grindelstrasse 12
Postfach
CH-8303 Bassersdorf
3. Secure the gas supply pipe with a
new gasket.
22
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2. Install the burner and torque nuts
diagonally with 4 Nm.
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
4. Check the gas connections for
soundness.
Danger
Escaping gas leads to a risk
of explosion.
Check all fittings for soundness.
5. Connect the electrical cables/leads
to each corresponding component.
Checking the condensate drain and cleaning the siphon
1. Check at siphon A, that the condensate can freely drain.
2. Remove the retaining clip and the
siphon.
3. Clean the siphon.
4. Fit the siphon and secure with the
retaining clip.
Testing anode earth current with an anode test device
5692 548 GB
Note
We recommend that the magnesium anode function is checked annually. This
function check can be made without interrupting operation, by measuring the
earth current with an anode test device.
23
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
1. Remove cover A.
2. Pull earth cable B from connecting
tab C.
3. Connect the test equipment (up to 5
mA) in series between connecting
tab C and earth cable B.
& The anode is OK if the indicated
current is >0.3 mA.
& Visually inspect the anode, if the
current measures < 0.3 mA or if
there is no current at all (see
page).
Cleaning the DHW cylinder
Note
DIN 1988 requires a visual inspection and (if necessary) cleaning evey two
years after the cylinder has been taken into use and thereafter according to
requirements.
1. Drain the DHW cylinder.
2. Remove flange lid A.
3. Disconnect the DHW cylinder from
the pipework to prevent cleaning
agents and contaminants entering
the pipe system.
!
24
Important information
For cleaning the inside, only
use plastic cleaning utensils.
5692 548 GB
4. Remove loose deposits with a high
pressure cleaner.
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
5. Remove hard deposits that cannot
be removed by a high pressure
cleaner, with a chemical cleaning
agent.
!
Important information
Never use hydrochloric
cleaning agents.
6. Thoroughly flush the DHW cylinder
after cleaning.
Checking and replacing the magnesium anode (if required)
Check the magnesium anode. We
recommend you change the magnesium anode if it has been reduced
down to 10 to 15mm Ø.
Taking the DHW cylinder back into use
1. Reconnect the DHW cylinder to the
pipework.
2. Insert new gasket A underneath
the flange lid B.
3. Fit flange lid B and tighten the
screws with a maximum torque of
25 Nm.
4. Push earth cable C onto connecting tab D.
5692 548 GB
5. Fill the DHW cylinder with potable
water.
25
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
Checking all gas equipment for soundness at operating pressure
Danger
Escaping gas leads to a risk of
explosion.
Check gas equipment for
soundness.
Checking the ionisation current
1. Pull the line off and connect test
equipment (adaptor line available
as accessory).
2. Set the upper rated output.
Constant temperature control unit:
& Press K and d simultaneously
for at least 2 seconds.
& With a/b in the display, select
2.
Weather-compensated control unit:
& Press K and d simultaneously
for at least 2 seconds.
& With a/b in the display, select
Full load.
A Adaptor line (available as accessory)
26
3. If the ionisation current is < 4 µA
& Check the electrode gap, see
page 21.
& Check the control unit power supply.
5692 548 GB
Note
The minimum ionisation current
should be at least 4 µA as soon as
the flame is established (approx. 23 seconds after opening the gas
combination valve).
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
4. After testing, press d.
5. Record the actual value in the service report.
Matching the control unit to the heating system
Note
The control unit must be matched to the system equipment. Various system
components are automatically recognised by the control unit, and codes are
automatically set.
& For selection of an appropriate design, see the following diagrams.
& For coding steps, see page 39.
System design 1
5692 548 GB
With one heating circuit without mixer A1
! Outside temperature sensor (only
for weather-compensated control
units)
or
lH Vitotrol 100 (only for constant
temperature control units)
27
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
Required coding
Operation with natural gas (as delivered condition)
or
Operation with LPG
Address
1E:0
1E:1
System design 2
With one heating circuit with mixer M2 and low loss header
Outside temperature sensor
Flow temperature sensor
Heating circuit pump
Mains supply (extension kit)
KM BUS
A
B
C
Low loss header
Extension kit for one heating circuit with mixer
Maximum temperature controller
(underfloor heating)
Required coding
One heating circuit with mixer and DHW cylinder
Operation with natural gas (as delivered condition)
or
28
Address
00:4
1E:0
5692 548 GB
!
?
sÖ
lH
aVG
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
Required coding
Operation with LPG
Address
1E:1
System design 3
With one heating circuit without mixer A1 and one heating circuit with
mixer M2
Note
The volume flow of the heating circuit without mixer must be at least 30 %
greater than the volume flow of the heating circuit with mixer.
5692 548 GB
!
?
sÖ
lH
aVG
Outside temperature sensor
Flow temperature sensor
Heating circuit pump
Mains supply (extension kit)
KM BUS
A
B
Maximum temperature controller
(underfloor heating)
Extension kit for one heating circuit with mixer
Required coding
Operation with natural gas (as delivered condition)
or
Address
1E:0
29
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
Required coding
Operation with LPG
Address
1E:1
System design 4
With one heating circuit without mixer A1 and one heating circuit with
mixer M2 with system separation
Outside temperature sensor
Flow temperature sensor
Heating circuit pump
Mains supply (extension kit)
KM BUS
A
B
C
Extension kit for one heating circuit with mixer
Maximum temperature controller
(underfloor heating)
Heat exchanger for system
separation
Required coding
Operation with natural gas (as delivered condition)
or
Operation with LPG
30
Address
1E:0
1E:1
5692 548 GB
!
?
sÖ
lH
aVG
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
System design 5
With one heating circuit with mixer M2 (with extension kit), one heating circuit with mixer (with Vitotronic 050) and low loss header
!
?
sÖ
lH
aVG
A
Outside temperature sensor
Flow temperature sensor
Heating circuit pump
Mains supply (extension kit)
KM BUS
Low loss header
B
C
D
Extension kit for one heating circuit with mixer
Vitotronic 050
Maximum temperature controller
(underfloor heating)
Address
00:4
1E:0
1E:1
5692 548 GB
Required coding
One heating circuit with mixer and DHW cylinder
Operation with natural gas (as delivered condition)
or
Operation with LPG
31
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
Connecting the control unit to the LON system (only for
weather-compensated control units)
The LON communication module (accessory) must be plugged in.
Installation instructions
LON communication module
Note
Data transfer via the LON system can take 2 to 3 minutes.
Setting up LON user numbers
Adjust the user number via coding
address 77 (see below).
In a LON system, the same number
cannot be allocated twice.
Updating the LON user list.
Only possible, if all users are connected, and the control unit is encoded as fault
manager (code 79:1).
1. Press L and d simultaneously
for approx. 2 seconds. User check
has been initiated (see page 33).
2. Press e. The user list is updated
after approx. 2 minutes. User
check completed.
Boiler control
unit
User no. 1
Code 77: 1
Control unit is
fault manager * 1
Code 79: 1
*1 In
32
Vitotronic 050
Vitotronic 050
Vitocom
User no. 10
Code 77: 10
Control unit is not
fault manager * 1
Code 79: 0
User no. 11
Set code 77: 11
Control unit is not
fault manager * 1
Code 79: 0
User no. 99
Control unit is
fault manager
each heating system, only one Vitotronic may be encoded as fault manager.
5692 548 GB
Single boiler system with Vitotronic 050 and Vitocom 300
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
Boiler control
Vitotronic 050
unit
Sent time via LON Time received via
Code 7b: 1
LON
Set code 81: 3
Transmit outside
Outside temperatemperature via
ture is received via
LON
LON
Set code 97: 2
Set code 97: 1
Vitotronic 050
Vitocom
Time received via
LON
Set code 81: 3
Outside temperature is received via
LON
Set code 97: 1
Time received
via LON
—
Implementing a user check (in conjunction with the LON system)
The communication with the system devices connected to the fault manager is
tested with a user check.
Preconditions:
& The control unit must be encoded as fault manager (code 79:1).
& The LON user number must be encoded in all control units (see page 32).
& The fault manager LON user list must be up to date (see page 32).
1. Press L and d simultaneously
for approx. 2 seconds. User check
initiated.
2. Select the required user with a
and b.
5692 548 GB
A Consecutive list number
B User number
3. Activate checking with d.
Check flashes until its completion.
The display and all key illuminations of the selected user flash for
approx. 60 seconds.
& Check OK flashes during communication between both
devices.
& Check not OK flashes if there is
no communication between both
devices. Check LON connection.
4. For checking further users, proceed
as for items 2 and 3.
33
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
5. Press L and d simultaneously
for approx. 1 second. User check
completed.
Adjusting heating curves (only for weather-compensated
control units)
Settings in the delivered condition:
& Slope = 1.4
& Level = 0
Generally, the slope of the heating
curve lies
& in the range of A for underfloor
heating systems,
& in the range of B for low temperature heating systems (according to
the Energy Savings Order [Germany]).
5692 548 GB
The heating curves illustrate the relationship between the outside temperature and the boiler water or the
flow temperature. To put it simply: The
lower the outside temperature, the
higher the boiler water or flow temperature. The room temperature,
again, depends on the boiler water or
the flow temperature.
34
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
Changing slope and level
1. Modify the slope in code 1 with coding address d3 (see page 39).
Adjustable value 2 to 35 (equals
slope 0.2 to 3.5).
2. Modify the slope in code 1 with coding address d4 (see page 39).
Value adjustable from –13 to +40 K.
A Changing the slope
B Changing the level
Adjusting the set room temperature
Standard room temperature:
5692 548 GB
1. For two heating circuits – select
heating circuit:
& Press a.
1r flashes on the display.
& Select heating circuit A1 (heating
circuit without mixer):
Press d.
& Select heating circuit M2 (heating
circuit with mixer):
– Press a.
– 2r flashes on the display.
– Press d.
35
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
2. Adjust the set day temperature with
rotary selector ts.
The value will be automatically
adopted after approx. 2 seconds.
Accordingly, the heating curve is
adjusted along set room temperature axis C, which results in modified start/shutdown characteristics
of the heating circuit pumps, if the
heating circuit pump logic is activated.
Example 1: Modifying the standard
room temperature from 20 °C to 26 °C
A Boiler water or flow temperature in
°C
B Outside temperature in °C
C Set room temperature in °C
D Heating circuit pump OFF
E Heating circuit pump ON
Reduced room temperature:
5692 548 GB
1. For two heating circuits – select
heating circuit:
& Press a.
1r flashes on the display.
& Select heating circuit A1 (heating
circuit without mixer):
Press d.
& Select heating circuit M2 (heating
circuit with mixer):
– Press a.
– 2r flashes on the display.
– Press d.
36
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
2. Call up the set night temperature
with E.
3. Change this value with a and b.
4. Confirm the set value with d.
Example 2: Modifying the reduced
room temperature from 5 °C to 14 °C
A Boiler water or flow temperature
in °C
B Outside temperature in °C
C Set room temperature in °C
D Heating circuit pump OFF
E Heating circuit pump ON
Instructing the system user
The system installer must hand the operating instructions to the system user
and instruct them in the operation of the system.
Scanning and resetting the maintenance display
5692 548 GB
The red fault indicator flashes when the limits set via coding address 21 and 23
have been reached. As regards the operating interface display:
& for constant temperature control units, the hours run (subject to setting) or the
given time interval and the clock symbol will flash
& for weather-compensated control units "Maintenance" flashes.
Note
Set code 24:1 and then code 24:0, if maintenance is implemented before maintenance is displayed; the set maintenance parameters for hours run and interval
are then reset to 0.
37
Initial start-up, inspection, maintenance
Further details regarding the individual steps (cont.)
1. Press c.
Maintenance scan is activated.
After maintenance has been carried
out
2. Scan maintenance messages
with a or b.
1. Reset code 24:1 to 24:0.
The red fault indicator is extinguished.
3. Press d, for weather-compensated control units also confirm the
display "Acknowledge: Yes"
with d.
"Maintenance" is cancelled from
the display, and the red fault indicator continues to flash.
2. If required:
& Press c.
& Reset burner hours run, burner
starts and consumption (see
page 69).
& Press c.
5692 548 GB
Note
An acknowledged maintenance
message can be redisplayed by
pressing d (approx. 3 seconds).
Note
If coding address 24 is not reset, a
new "Maintenance" message will
be displayed on Monday at
07:00 h.
38
Coding
Code 1
Call up code 1
1. Press K and L simultaneously
for approx. 2 seconds.
2. Select the required coding address
with a or b; the address flashes.
Confirm with d; the value flashes.
Note
Codes are displayed in plain text
on weather-compensated control
units. Codes, which are not relevant because of the equipment
level of your heating system or
because of settings of other codes,
will not be displayed.
3. Change this value with a and b;
confirm with d. The display briefly
shows "adopted", then the address
flashes again. Select additional
addresses (if required) with a
or b.
4. Press K and L simultaneously
for approx. 1 second.
Coding is terminated.
Summary
Codes
5692 548 GB
Coding in
Function mode
the as
delivered
condition
Address:
value
System design
00 :2
System design 1:
1 heating circuit without
mixer A1, with DHW
heating
Max. boiler temp.
06:...
Maximum limit of the
boiler water temperature, defaulted by the
boiler coding card
Coding
change
Address:
value
Possible change
00 :4
System design 2, 5:
1 mixer circuit M2, with
DHW heating
System design 3, 4:
1 heating circuit without
mixer A1, 1 mixer circuit
M2 with DHW heating
00 :6
06:20
to
06:127
Maximum limit of the boiler water temperature
within the ranges
defaulted by the boiler
39
Coding
Code 1 (cont.)
Coding in
the as
delivered
condition
Address:
value
Gas type
1E:0
Function mode
Operation with natural
gas
Venting/filling
2F:0
Ventilation program/filling program inactive
User no.
77:1
LON user number
Coding
change
Address:
value
Possible change
1E:1
Operation with LPG
2F:1
2F:2
Venting program active
Filling program active
77:2
to
77:99
LON user number, adjustable from 1 to 99:
1-4 = boiler
5 = cascade
10 - ... = Vitotronic 050
99 = Vitocom
Summer econ. A1
A5:5
* 1With heating circuit
pump logic function
Summer econ. M2
A5:5
* 1With heating circuit
pump logic function
Min. flow temp. A1
C5:20
Electronic minimum
flow temperature limit
20 °C
Min. flow temp. M2
C5:20
Electronic minimum
flow temperature limit
20 °C
Max. flow temp. A1
C6:75
* 1Electronic maximum
flow temperature limit at
75 °C
*1 Only
40
for weather-compensated control unit.
A5:0
Without heating circuit
pump logic function
A5:0
Without heating circuit
pump logic function
C5:1
to
C5:127
Minimum limit adjustable
from 1 to 127 °C
C5:1
to
C5:127
Minimum limit adjustable
from 1 to 127 °C
C6:1
to
C6:127
Maximum limit adjustable
from 1 to 127 °C
5692 548 GB
Note
Allocate each number
only once.
Coding
Code 1 (cont.)
Coding in
Function mode
the as
delivered
condition
Address:
value
Max. flow. temp. M2
C6:75
* 1Electronic maximum
flow temperature limit at
75 °C
Slope A1
d3:14
* 1Heating curve slope =
1.4
Slope M2
d3:14
Level A1
d4:0
Possible change
C6:1
to
C6:127
Maximum limit adjustable
from 1 to 127 °C
d3:2
to
d3:35
Heating curve slope
adjustable from 0.2 to 3.5
(see page 34)
* 1Heating curve slope = d3:2
1.4
to
d3:35
Heating curve slope
adjustable from 0.2 to 3.5
(see page 34)
* 1Heating curve level =
d4:–13
to
d4:40
Heating curve level
adjustable from –13 to 40
(see page 34)
d4:–13
to
d4:40
Heating curve level
adjustable from –13 to 40
(see page 34)
0
Level M2
d4:0
Coding
change
Address:
value
* 1Heating curve level =
0
Code 2
Calling up code 2
5692 548 GB
1. Press L and G simultaneously
for approx. 2 seconds; confirm
with d.
2. Select the required coding address
with a or b; the address flashes.
Confirm with d; the value flashes.
*1 Only
3. Change this value with a and b;
confirm with d. The display briefly
shows "adopted", then the address
flashes again. Select additional
addresses (if required) with a
or b.
for weather-compensated control unit.
41
Coding
Code 2 (cont.)
4. Press L and G simultaneously
for approx. 1 second.
Coding is terminated.
Overall summary
The coding addresses are grouped in accordance with the following function
ranges. The respective function range is displayed.
Scroll through the ranges in the following sequence with a or b.
Function range
System design
Boiler/burner
DHW
General
Boiler circuit (heating circuit A1 without
mixer)
Mixer circuit (heating circuit M2 with mixer)
Coding addresses
00
06 to 54
56 to 73
76 to 9F
A0 to F7
A0 to F7
5692 548 GB
Note
Codes, which are not relevant because of the equipment level of your heating
system or because of settings of other codes, will not be displayed.
For heating systems with one heating circuit without mixer and one heating circuit with mixer, initially the possible coding addresses A0 to F7 are scrolled for
the heating circuit without mixer A1, then those for the heating circuit with mixer
M2.
42
Coding
Code 2 (cont.)
Codes
Coding in
Function mode
the as
delivered
condition
Address:
value
System design
00 :2
System design 1:
1 heating circuit without
mixer A1, with DHW
heating
Boiler/burner
06:...
Maximum limit of the
boiler water temperature, defaulted by the
boiler coding card
1E:0
Operation with natural
gas
21:0
No maintenance indication
Burner
No time interval for burner maintenance
24:0
No "Maintenance" display
Possible change
00 :4
System design 2, 5:
1 mixer circuit M2, with
DHW heating
System design 3, 4:
1 heating circuit without
mixer A1, 1 mixer circuit
M2 with DHW heating
00 :6
06:20
to
06:127
1E:1
21:1
to
21:100
23:1
to
23:24
24:1
Maximum limit of the boiler water temperature
within the ranges
defaulted by the boiler
Operation with LPG
The number of hours run
before the burner should
be serviced is adjustable
from 100 to 10000 hours
(each step represents
100 hours)
Time interval adjustable
from 1 to 24 months
"Maintenance" display
(the address is automatically set and must be
manually reset after
maintenance has been
completed)
5692 548 GB
23:0
Coding
change
Address:
value
43
Coding
Code 2 (cont.)
28:0
2E:0
2F:0
30:1
31:65
32:0
Coding
0
1
*1 Only
44
Function mode
Coding
change
Address:
value
Possible change
* 1No recognition of out-
25:1
side temperature sensor or remote
monitoring (only in i)
No burner interval ignition
Without external extension
Recognition of outside
temperature sensor and
fault monitoring
28:1
The burner is forced ON
once every 24 hours
Including external extension (automatical adjustment on connection)
Venting program active
Filling program active
Internal circulation pump
without variable speed
(e.g. temporarily for service)
Set speed adjustable
from 0 to 100 %
2E:1
Ventilation program/filling program inactive
Internal variable speed
circulation pump (automatic adjustment)
2F:1
2F:2
30:0
Set speed of the internal circulation pump
when operated as boiler
circuit pump 65 %,
defaulted by the boiler
coding card
Influence signal External lockout on circulation pumps: All pumps
are controlled
31:0
to
31:100
Heating cirInternal
cuit pump
circulation pump Heating circuit without
mixer
Control
Control funct.
funct.
Control
Control funct.
funct.
for constant temperature control units.
32:1
to
32:15
Influence signal External
lockout on circulation
pumps: see the following
table
Heating circuit
pump
Heating circuit
with mixer
Cylinder loading
pump
Control funct.
Control funct.
Control funct.
OFF
5692 548 GB
Coding in
the as
delivered
condition
Address:
value
25:0
Coding
Code 2 (cont.)
Coding
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Internal
Heating circirculacuit pump
tion pump Heating circuit without
mixer
Control
Control funct.
funct.
Control
Control funct.
funct.
Control
OFF
funct.
Control
OFF
funct.
Control
OFF
funct.
Control
OFF
funct.
OFF
Control funct.
OFF
Control funct.
OFF
Control funct.
OFF
Control funct.
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Cylinder loading
pump
OFF
Control funct.
OFF
OFF
Control funct.
Control funct.
Control funct.
OFF
OFF
Control funct.
OFF
OFF
Control funct.
Control funct.
OFF
OFF
Control funct.
Control funct.
OFF
OFF
Control funct.
OFF
Control funct.
OFF
Control funct.
OFF
Control funct.
OFF
Coding
change
Address:
value
Possible change
34:1
to
34:23
Influence signal External
demand on circulation
pumps: see the following
table
5692 548 GB
Function mode
Coding in
the as
delivered
condition
Address:
value
Boiler/burner
34:0
Influence signal External demand on circulation pumps: All pumps
are controlled
Heating circuit
pump
Heating circuit
with mixer
45
Coding
Code 2 (cont.)
Internal
circulation
pump
0
8
Control
funct.
Control
funct.
Control
funct.
Control
funct.
Control
funct.
Control
funct.
Control
funct.
Control
funct.
OFF
9
OFF
10
OFF
11
OFF
12
13
14
15
16
OFF
OFF
OFF
OFF
ON
17
ON
18
ON
19
ON
20
ON
1
2
3
4
5
6
7
46
Heating circuit pump
Heating circuit without
mixer
Control
funct.
Control
funct.
Control
funct.
Control
funct.
OFF
Heating circuit pump
Heating circuit with
mixer
Control funct.
Cylinder loading pump
Control funct.
OFF
OFF
Control funct.
OFF
OFF
Control funct.
Control funct.
OFF
Control funct.
OFF
OFF
OFF
Control funct.
OFF
OFF
OFF
Control
funct.
Control
funct.
Control
funct.
Control
funct.
OFF
OFF
OFF
OFF
Control
funct.
Control
funct.
Control
funct.
Control
funct.
OFF
Control funct.
Control funct.
Control funct.
OFF
OFF
Control funct.
OFF
OFF
Control funct.
Control funct.
OFF
OFF
Control funct.
Control funct.
OFF
Control funct.
OFF
Control funct.
Control funct.
OFF
OFF
Control funct.
OFF
OFF
Control funct.
Control funct.
Control funct.
5692 548 GB
Coding
Coding
Code 2 (cont.)
Coding
Internal
circulation
pump
21
22
23
ON
ON
ON
Heating circuit pump
Heating circuit without
mixer
OFF
OFF
OFF
Coding in
Function mode
the as
delivered
condition
Address:
value
Boiler/burner
52:0
Without flow temperature sensor for low loss
header
53:3
54:0
Function connection sK
of the internal extension: Cylinder loading
pump (fixed speed)
Without solar control
unit
Domestic hot water
56:0
DHW temperature
adjustable from 10 to
60 °C
5692 548 GB
58:0
Without auxiliary function for DHW loading
Heating circuit pump
Heating circuit with
mixer
Control funct.
OFF
OFF
Cylinder loading pump
OFF
Control funct.
OFF
Coding
change
Address:
value
Possible change
52:1
With flow temperature
sensor for low loss
header (automatic adjustment upon recognition)
54:1
54:2
With Vitosolic 100
With Vitosolic 200 (automatical adjustment on
recognition)
56:1
DHW temperature adjustable from 10 to above
60 °C (subject to boiler
coding card)
Observe the max. permissible DHW temperature
Input of a 2nd set DHW
value; adjustable from 1
to 95 °C (observe coding
address 56)
58:1
to
58:95
47
Coding
Code 2 (cont.)
60:10
62:2
Function mode
Coding
change
Address:
value
Possible change
DHW cylinder loading:
Starting point -2.5 K
Stopping point +2.5 K
During DHW loading,
the boiler water temperature is a maximum
of 20 K higher than the
set DHW temperature
Circulation pump with 2
minutes run-on time
59:1
to
59:10
60:5
to
60:25
Starting point adjustable
from 1 to 10 K below the
set value
The difference between
the boiler water temperature and the set DHW
temperature is adjustable
from 10 to 50 K
Circulation pump without
run-on
Run-on time adjustable
from 1 to 15 minutes
*1
63:0
Without auxiliary function for DHW loading
65:...
Information regarding
the type of diverter
valve (not adjustable)
62:0
62:1
to
62:15
63:1
63:2
to
63:14
63:15
65:0
65:1
65:2
65:3
6C:100
6F:100
*1 Only
48
Set speed internal DHW 6C:0
loading pump 100 %
to
6C:100
Max. output during
6F:0
DHW loading 100 %,
to
defaulted by the boiler
6F:100
coding card
for constant temperature control units.
Additional function: 1 x
daily
Every 2 to every 14 days
2 x daily
Without diverter valve
Diverter valve by Viessmann
Diverter valve by Wilo
Diverter valve by Grundfos
Set speed adjustable
from 0 to 100 %
Max. output during DHW
loading adjustable from 0
to 100 %
5692 548 GB
Coding in
the as
delivered
condition
Address:
value
59:0
Coding
Code 2 (cont.)
Coding in
the as
delivered
condition
Address:
value
71:0
Function mode
Coding
change
Address:
value
Possible change
* 1DHW circulation
71:1
OFF during DHW loading
to set value 1
ON during DHW loading
to set value 1
pump: According to
DHW time program: ON
(Vitotrol 300 enables
separate switching
times)
* 1DHW circulation
pump: According to
DHW time program: ON
72:0
* 1DHW circulation
73:0
pump: According to
DHW time program: ON
71:2
72:1
72:2
73:1
to
73:6
73:7
General
76:0
* 1Without LON commu-
76:1
nication module
77 :1
* 1LON user number
77 :2
to
77 :99
OFF during DHW loading
to second set value
ON during DHW loading
to second set value
During the time program
1x/h ON for 5 minutes
up to 6x/h ON for 5 minutes
Constantly ON
With LON communication
module; automatic recognition
LON user number, adjustable from 1 to 99:
1-4 = boiler
5 = cascade
10 - ... = Vitotronic 050
99 = Vitocom
5692 548 GB
Note
Allocate each number
only once.
79:1
* 1Control unit is fault
79:0
7b:1
manager
* 1Send time to LON
7b:0
*1 Only
Control unit is not fault
manager
Do not send time to LON
for weather-compensated control unit.
49
Coding
Code 2 (cont.)
Coding in
the as
delivered
condition
Address:
value
7F:1
Function mode
Coding
change
Address:
value
Possible change
* 1Detached house
7F:0
80:1
With 5 seconds time
delay for fault message;
message will be issued,
if a fault persists for at
least 5 seconds
Automatic change
between summer and
winter
80:0
80:2
to
80:199
Multi-occupancy house
Separate adjustment for
holiday program and time
program for DHW loading, as option
Without time delay
Time delay adjustable
from 10 to 995; 1 step =
5s
88 :0
8A:175
90:128
*1 Only
50
Temperature display in
°Celsius
Do not adjust
Time constant for calculating adjusted outside
temperature 21.3 h
for weather-compensated control unit.
81:0
81:2
81:3
88 :1
90:0
to
90:199
Manual summer/winter
changeover
The application of the
radio clock module will be
recognised automatically
Accept time via LON
Temperature display in
Fahrenheit
Quick (low values) or
slow (high values) matching of flow temperature
subject to set value if the
outside temperature
changes;
1 step = 10 min.
5692 548 GB
81:1
Coding
Code 2 (cont.)
Coding in
the as
delivered
condition
Address:
value
91:0
Function mode
Coding
change
Address:
value
Possible change
* 1No external operating
91:1
External heating program
changeover applies to
heating circuit without
mixer
External heating program
changeover applies to
heating circuit with mixer
External heating program
changeover applies to
heating circuit without
mixer and heating circuit
with mixer
With Vitocom 100 communication interface;
automatic recognition
Outside temperature is
adopted by the LON BUS
The outside temperature
of the sensor connected
to the control unit will be
utilised internally and
transmitted via LON BUS
to any connected Vitotronic 050.
System number adjustable from 1 to 5
mode changeover via
external extension
91:2
91:3
95:0
97:0
98:1
5692 548 GB
9b:0
*1 Only
Without Vitocom 100
communication interface
* 1The outside temperature of the sensor connected to the control
unit is utilised internally
Viessmann system
numbers (in conjunction
with monitoring of several systems via Vitocom 300)
No minimum set boiler
water temperature in
case of external
demand
95:1
97:1
97:2
98:1
to
98:5
9b:1
to
9b:127
Set temperature adjustable from 1 to 127 °C
for weather-compensated control unit.
51
Coding
Code 2 (cont.)
Function mode
Coding
change
Address:
value
* 1Monitoring LON users 9C:0
When there is no
response from a user,
values defaulted inside
the control unit continue
to be used for a further
20 minutes. Only then
will a fault message be
triggered.
9F:8
* 1Differential temperature 8 K; only in conjunction with a mixer
circuit
Boiler circuit, mixer circuit
A0:0
* 1Without remote control
9C:5
to
9C:60
52
for weather-compensated control unit.
No monitoring
Time adjustable from 5 to
60 minutes
9F:0
to
9F:40
Differential temperature
adjustable from 0 to 40 K
A0:1
With Vitotrol 200 (automatic recognition)
With Vitotrol 300 (automatic recognition)
A0:2
*1 Only
Possible change
5692 548 GB
Coding in
the as
delivered
condition
Address:
value
9C:20
Coding
Code 2 (cont.)
Coding in
the as
delivered
condition
Address:
value
A3:2
Function mode
Coding
change
Address:
value
Outside temperature
A3:-9
below 1 °C: Heating cir- to
cuit pump ON
A3:15
Outside temperature
above 3 °C: Heating circuit pump OFF
Possible change
Heating circuit pump ON/
OFF (see the following
table)
5692 548 GB
Note
When selecting a value
below 1 °C there will be
a risk of pipes outside
the thermal insulation
envelope of the house
freezing-up. The
standby mode, in particular, should be
observed, e.g. during
holidays.
Parameters
Address A3:...
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
1
2
to
15
Heating circuit pump
ON at
-10 °C
-9 °C
-8 °C
-7 °C
-6 °C
-5 °C
-4 °C
-3 °C
-2 °C
-1 °C
0 °C
1 °C
to
14 °C
OFF at
-8 °C
-7 °C
-6 °C
-5 °C
-4 °C
-3 °C
-2 °C
-1 °C
0 °C
1 °C
2 °C
3 °C
16 °C
53
Coding
Code 2 (cont.)
Coding in
Function mode
the as
delivered
condition
Address:
value
Boiler circuit, mixer circuit
A4:0
* 1With frost protection
Coding
change
Address:
value
Possible change
A4:1
No frost protection,
adjustment only possible
if code "A3 : -9" is
selected.
Note
When selecting a value
below 1 °C there will be a
risk of pipes outside the
thermal insulation envelope of the house freezing-up. The standby
mode, in particular,
should be observed, e.g.
during holidays.
* 1With heating circuit
A5:0
pump logic function
(economy circuit): Heat- A5:1
ing circuit pump OFF, if to
the outside temperature A5:15
(AT) is 1 K higher than
the set room temperature (RT Set )
AT > RTSet + 1 K
Parameter address
A5:...
1
2
3
4
5
6
*1 Only
54
Without heating circuit
pump logic function
With heating circuit pump
logic function: Heating
circuit pump OFF, if (see
the following table)
With heating circuit pump logic function: Heating
circuit pump OFF, if
AT > RTSet + 5 K
AT > RTSet + 4 K
AT > RTSet + 3 K
AT > RTSet + 2 K
AT > RTSet + 1 K
AT > RTSet
for weather-compensated control unit.
5692 548 GB
A5:5
Coding
Code 2 (cont.)
Parameter address
A5:...
7
to
15
With heating circuit pump logic function: Heating
circuit pump OFF, if
AT > RTSet - 1 K
AT > RTSet - 9 K
5692 548 GB
Coding in
Function mode
the as
delivered
condition
Address:
value
Boiler circuit, mixer circuit
A6:36
* 1Extended economy
circuit inactive
*1 Only
Coding
change
Address:
value
Possible change
A6:5
to
A6:35
Extended economy circuit active, i.e. the burner
and heating circuit pump
will be switched OFF, and
the mixer will be closed at
a variable value, which is
adjustable between 5 and
35 ºC plus 1 ºC. This
value is based on the
adjusted outside temperature, comprising the
actual outside temperature and a time constant,
which takes the cooling
down of an average
building into consideration.
for weather-compensated control unit.
55
Coding
Coding in
the as
delivered
condition
Address:
value
A7:0
Function mode
Coding
change
Address:
value
Possible change
* 1Without mixer econ-
A7:1
With mixer economy
function (extended heating circuit pump logic):
Heating circuit pump also
OFF, if the mixer was
closed for longer than
20 minutes. Heating
pump ON,
& if the mixer changes to
control mode
or
& after cylinder loading
(for 20 minutes)
or
& if there is a risk of frost
Heating circuit M2 (mixer
circuit) creates no
demand for the internal
circulation pump
* 1Without pump idle period
With pump idle time,
adjustable from 1 to 15
omy function
A8:1
A9:7
*1 Only
56
* 1Heating circuit M2
(mixer circuit) creates a
demand for the internal
circulation pump
* 1With pump idle period: Heating circuit
pump OFF in case of
set value modification
(by changing the operating mode or changing
the set room temperature)
for weather-compensated control unit.
A8:0
A9:0
A9:1
to
A9:15
5692 548 GB
Code 2 (cont.)
Coding
Code 2 (cont.)
Coding in
the as
delivered
condition
Address:
value
b0:0
Function mode
Coding
change
Address:
value
Possible change
* 1With remote control:
b0:1
Heating mode: Weathercompensated
Reduced mode: With
room temperature hookup
Heating mode: With room
temperature hook-up
Reduced mode: Weathercompensated
Heating mode/reduced
mode: With room temperature hook-up
Without room influence
Room influence factor
adjustable from 1 to 64
Heating mode/reduced
mode: Weather-compensated * 2
b0:2
b0:3
b2:8
5692 548 GB
b5:0
With remote control unit
and for the heating circuit, heating with room
temperature hook-up
must be encoded:
Room influence factor
8* 2
* 1With remote control:
Without room temperature-dependent heating
circuit pump logic function * 2
Parameter
address b5:...
1:
2:
3:
4:
5:
6:
b2:0
b2:1
to
b2:64
b5:1
to
b5:8
Heating circuit pump
logic function - see the
following table
With heating circuit pump logic function: Heating circuit pump OFF, if
active RTActual > RT Set + 5 K; passive RTActual < RTSet + 4 K
active RTActual > RT Set + 4 K; passive RTActual < RTSet + 3 K
active RTActual > RT Set + 3 K; passive RTActual < RTSet + 2 K
active RTActual > RT Set + 2 K; passive RTActual < RTSet + 1 K
active RTActual > RT Set + 1 K; passive RTActual < RTSet
active RTActual > RT Set; passive RTActual < RT Set - 1 K
*1 Only
for weather-compensated control unit.
the coding for the heating circuit without mixer A1 or for mixer circuit M2, if the
remote control unit affects that heating circuit.
*2 Change
57
Coding
Code 2 (cont.)
With heating circuit pump logic function: Heating circuit pump OFF, if
active RTActual > RT Set - 1 K; passive RTActual < RT Set - 2 K
active RTActual > RT Set - 2 K; passive RTActual < RT Set - 3 K
Function mode
Coding in
the as
delivered
condition
Address:
value
Boiler circuit, mixer circuit
C5:20
* 1Electronic minimum
flow temperature limit in
standard mode 20 °C
C6:74
d3:14
d4:0
* 1Electronic maximum
flow temperature limit
74 °C
* 1Heating curve slope =
1.4
* 1Heating curve level =
0
d5:0
E1:1
E2:50
*1 Only
58
* 1The external operating mode changeover
changes the heating
program to "Constant
operation with reduced
room temperature"
* 1With remote control:
Set day value is adjustable at the remote control unit from 10 to
30 °C
* 1With remote control
unit and for the heating
circuit, heating with
room temperature hookup must be encoded:
for weather-compensated control unit.
Coding
change
Address:
value
Possible change
C5:1
to
C5:127
Minimum temperature
limit in standard mode
adjustable from 1 to
127 °C
Maximum limit adjustable
from 1 to 127 °C
C6:0
to
C6:127
d3:2
to
d3:35
d4:–13
to
d4:40
d5:1
E1:0
E1:2
E2:0
to
E2:49
E2:51
to
Heating curve slope
adjustable from 0.2 to 3.5
(see page 34)
Heating curve level
adjustable from –13 to 40
(see page 34)
The external operating
mode changeover
changes the heating program to "Constant operation with standard room
temperature"
Set day value adjustable
from 3 to 23 °C
Set day value adjustable
from 17 to 37 °C
Display correction – 5 K
or
Display correction – 0.1 K
Display correction +0.1 K
or
5692 548 GB
Parameter
address b5:...
7:
8:
Coding
Code 2 (cont.)
Coding in
the as
delivered
condition
Address:
value
E5:0
E6:65
E7:30
E8:1
E9:45
Function mode
Coding
change
Address:
value
Possible change
No display correction of
the actual room temperature
* 2Without variable
speed circuit pump
E2:99
Display correction +4.9 K
E5:1
With variable speed circuit pump; automatic
recognition
Maximum speed adjustable from 0 to 100 % of
max. speed
* 2Max. speed of the
variable speed pump =
65 % of max. speed in
standard mode
* 2Min. speed of the variable speed pump = 30
% of max. speed
* 2Min. speed subject to
the setting in coding
address "E9"
* 2Speed of the variable
speed pump = 45 % of
max. speed in reduced
mode
E6:0
to
E6:100
E7:0
to
E7:100
E8:0
E9:0
to
E9:100
Mixer circuit
F1:0
Screed function inactive F1:1
(only for weather-comto
pensated control units) F1:5
Minimum speed adjustable from 0 to 100 % of
max. speed
Speed subject to the setting in coding address
"E7"
Speed adjustable from 0
to 100 % of max. speed
Screed drying function
adjustable in accordance
with five optional temperature time profiles
(see page 105)
5692 548 GB
Note
Observe the screed drying supplier's instructions.
Observe DIN 4725-2 or
local regulations. The
report to be provided by
the heating contractor
*2 Only
for weather-compensated control unit.
59
Coding
Code 2 (cont.)
F2:8
F5:12
*3 Only
Function mode
* 3Time limit for party
operation 8 hours or
external operating
mode changeover via
push button * 4
* 5* 5Run-on time of the
internal circulation
pump in heating mode
Coding
change
Address:
value
F1:6
to
F1:15
F2:0
F2:1
to
F2:12
F5:0
F5:1
to
F5:20
Possible change
must contain the following heat-up details:
& Heat-up data with
respective flow temperatures
& Max. flow temperature
achieved
& Operating condition
and outside temperature during handover
The function continues
after power failure or
after the control unit has
been switched OFF. The
heating program "rw"
will be started, after the
screed-drying function
has been completed or if
the address is manually
set to 0.
Constant flow temperature 20 °C
No time limit for party
mode
Time limit adjustable from
1 to 12 hours * 4* 4
No run-on time of the
internal circulation pump
Run-on time of the internal circulation pump
adjustable from 1 to
for weather-compensated control unit.
heating program "rw", the party mode ends automatically when changing over to
operation with standard room temperature.
*5 Only for constant temperature control units.
*4 In
60
5692 548 GB
Coding in
the as
delivered
condition
Address:
value
Coding
Code 2 (cont.)
Coding in
the as
delivered
condition
Address:
value
Function mode
Coding
change
Address:
value
F6:0
* 6* 6In the "DHW only"
F6:1
to
F6:24
operating mode, the
internal circulation
pump is permanently
OFF
F6:25
F7:0
* 6* 6Internal circulation
pump is permanently
OFF in operating mode
"Standby mode"
F7:1
to
F7:24
F7:25
Possible change
20 minutes
In the "DHW only" operating mode, the internal circulation pump will be
started 1 to 24 times per
day for 10 minutes
respectively.
In the "DHW only" operating mode, the internal circulation pump is
permanently ON
In "Standby mode", the
internal circulation pump
will be started 1 to 24
times per day for
10 minutes respectively.
* 6* 6Internal circulation
pump is permanently ON
in operating mode
"Standby mode"
Resetting the coding to the as delivered condition
5692 548 GB
1. Press L and G simultaneously
for approx. 2 seconds.
*6 Only
2. Press e.
"Basic setting? Yes" with d.
With a or b, you can select
"Basic setting? Yes" or "Basic setting? No".
for constant temperature control units.
61
Service scans
Service level summary
Exit
Press d.
Page
63
Press d.
67
Press d.
17
Press c.
Press d.
69
37
–
–
–
–
–
–
–
–
–
–
–
–
–
–
5692 548 GB
Function
Key combination
Temperatures, boiler cod- Press K and G simultaing card and brief scans
neously for approx.
2 seconds
Relay test
Press K and d simultaneously for approx.
2 seconds
Max. output (heating
Press K and F simultamode)
neously for approx.
2 seconds
Operating condition
Press c.
Maintenance scan
c (if "Maintenance"
flashes)
Adjusting the display con- Press d and b simultatrast
neously; display darkens
Press d and a simultaneously; display becomes
lighter
Error history
Press G and d simultaneously for approx.
2 seconds
User check (in conjuncPress L and d simultation with LON system)
neously for approx.
2 seconds
Emissions test function
Press F and E simulta"S"
neously for approx.
2 seconds
Coding level 1
Press K and L simultaneously for approx.
2 seconds
Plain text display
Coding level 2
Press L and G simultaNumerical display
neously for approx.
2 seconds
62
Service scans
Temperatures, boiler coding card and brief scans
Weather-compensated control unit
1. Press K and G simultaneously
for approx. 2 seconds.
2. Select the required scan with a
and b.
3. Press d.
The following values can be scanned, subject to the actual equipment level:
Slope A1 – Level A1
Slope M2 – Level M2
& Adj. outside temp.
& Actual outside temp.
& Set boiler temp.
& Actual boiler temp.
& Set DHW temp.
& Actual DHW temp.
& Actual DHW outlet temp.
& Set DHW outlet temp.
& Set flow temp.
& Actual flow temp.
& Set mixed flow temp.
& Actual mixed flow temp.
& Boiler coding card
& Brief scan 1
to
Brief scan 8
&
&
The adjusted outside temperature can be reset
to the current outside temperature with e.
Heating circuit with mixer
Heating circuit with mixer
Low loss header
Low loss header
Display screen
Brief
scan
N/A
N/A
Software version
Control unit
X
X
Version
Boiler (EEPROM)
X
X
Version
Burner control unit
(EEPROM)
5692 548 GB
Boiler
coding
card
1
63
Service scans
Temperatures, boiler coding card and brief scans (cont.)
Display screen
Brief
scan
2
3
4
5
Display
KM BUS
users
Max. demand temperature
Software Software Software Software
version
version
version
version
Mixer
Solar
LON
Ext. extenextencontrol
system
sion
sion kit
unit
Type
Boiler type
Burner control unit
N/A
External hook-up 0 to 10 V
Display in %
Software Max. output
Display in %
version
Third
party
controller
5692 548 GB
6
System design 1 to
6
Display in accordance with the relevant design
N/A
Software
version
Programming unit
Software version
Burner control unit
0: No ext. 0: No
demand
ext.
or operblocking
ating
1: Ext.
mode
blocking
changepresent
over
1: Ext.
demand
or operating
mode
changeover present
Number of LON
users
64
Service scans
Temperatures, boiler coding card and brief scans (cont.)
Display screen
Brief
scan
7
8
N/A
N/A
Internal circultion
pump
Variable
Software
speed
version
pump
variable
0: excl.
speed
1: Wilo
pump
2: Grundfos
Heating circuit 1
(boiler circuit A1)
Remote Software
control
version
0: excl.
Remote
1: Vitocontrol
trol
200
2: Vitotrol
300
Heating circuit pump
boiler circuit A1
Variable Software
speed
version
pump
variable
0: excl.
speed
1: Wilo
pump
2: Grundfos
Heating circuit 2
(mixer circuit M2)
Remote Software
control
version
0: excl.
Remote
1: Vitocontrol
trol
200
2: Vitotrol
300
Heating circuit pump
mixer circuit M2
Variable Software
speed
version
pump
variable
0: excl.
speed
1: Wilo
pump
2: Grundfos
Constant temperature control units
1. Press K and G simultaneously
for approx. 2 seconds.
Scanning is active.
2. Select the required scan with a
and b.
5692 548 GB
3. Press d.
Scanning is completed.
65
Service scans
Temperatures, boiler coding card and brief scans (cont.)
Display screen
Brief scan
0
1
E
3
A
4
5
0: No ext.
blocking
1: Ext.
blocking
present
Software
version
Operating
interface
Software
version
Cascade
module
External hook-up 0 to 10 V
Display in %
Set boiler temperature at the boiler
temperature sensor
Highest demand temperature
Burner control unit type Boiler type
Set cylinder temperature at the cylinder temperature sensor (current
value)
Max. output in %
Boiler coding card (hexa-decimal)
Version
Version
Equipment (EEPROM)
Burner control unit
(EEPROM)
5692 548 GB
b
C
c
Software
version
Solar
panel
0: No ext.
demand or
operating
mode
changeover
1: Ext.
demand or
operating
mode
changeover present
System
Software version
design, dis- Control unit
play in
accordance
with the
design
Software version
Software
Burner control unit
version ext.
extension
66
Service scans
Temperatures, boiler coding card and brief scans (cont.)
Display screen
Brief scan
d
Variable
speed
pump
0: excl.
1: Wilo
2: Grundfos
Software
version
variable
speed pump
Testing outputs (relay test)
Weather-compensated control unit
1. Press K and d simultaneously
for approx. 2 seconds.
Relay test is activated.
2. Select the relay outputs with a
and b.
3. Press d.
Relay test is completed.
5692 548 GB
Subject to the actual equipment level, the following relay outputs can be controlled:
Display
Basic load
Full load
Heating valve
Valve central pos.
DHW valve
Int. pump ON
Close mixer
Open mixer
Heating circ. pump M2 ON
Output int.
Heating circ. pump A1 ON
Cylinder loading pump ON
DHW circ. pump ON
Central fault display ON
Explanations
Burner modulation lower output
Burner modulation upper output
Diverter valve set to heating mode
Changeover valve in central position (fill)
Diverter valve set to DHW mode
Int. pump/output 20 ON
Mixer extension
Mixer extension
Mixer extension
Internal extension
Ext. extension
Ext. extension
Ext. extension
Ext. extension
67
Service scans
Testing outputs (relay test) (cont.)
Display
Solar pump ON
Explanations
Vitosolic
Constant temperature control units
1. Press K and d simultaneously
for approx. 2 seconds.
Relay test is activated.
2. Select the relay outputs with a
and b.
3. Press d.
Relay test is completed.
Subject to the actual equipment level, the following relay outputs can be controlled:
Explanations
Burner modulation lower output
Burner modulation upper output
Diverter valve set to heating mode
Valve in central position
Valve set to DHW mode
Internal pump / output 20 ON
Output sK internal extension
Heating circuit pump A1 external extension
Cylinder loading pump external extension
DHW circulation pump external extension
Central fault external extension
5692 548 GB
Display
1
2
3
4
5
6
10
11
12
13
14
68
Service scans
Scanning operating conditions and sensors
Weather-compensated control unit
5692 548 GB
1. For two heating circuits – select
heating circuit:
& Press a.
1r flashes on the display.
& Select heating circuit A1 (heating
circuit without mixer):
Press d.
& Select heating circuit M2 (heating
circuit with mixer):
– Press a.
– 2r flashes on the display.
– Press d.
2. Press c.
3. Select the required operating condition scan with a or b.
4. Press c.
Heating circuits A1 and M2
Operating condition display Explanations
(subject to system equipment level)
User no.
Encoded user no. in the LON system
Holiday program
Display only if a holiday program has been set
up
Date of departure
Date
Date of return
Date
Outside temperature, ... °C
Actual value
Boiler temperature, ... °C
Actual value
Flow temperature, ... °C
Actual value (only for heating circuit M2)
Standard
Set value
room temperature, ... °C
Room temperature, ... °C
Actual value
Ext. set room temp., ... °C
If external hook-up
DHW temperature, ... °C
Actual DHW temperature
Solar DHW temp., ... °C
Actual value
Collector temperature, ... °C
Actual value
Mixed flow temp., ... °C
Actual value, only with low loss header
Hours run
Burner, ...h * 1
Actual value
Burner starts, ... * 1* 1
Solar energy
Display in kW/h
Time
*1 Reset
hours run and burner starts after maintenance has been completed. You can reset
the hours run to 0 by pressing e.
69
Service scans
Scanning operating conditions and sensors (cont.)
Operating condition display
(subject to system equipment level)
Date
Burner OFF or ON
Int. pump OFF or ON
Int. output OFF or ON
Heating pump OFF or ON
Cylinder loading pump OFF
or ON
DHW circulation pump OFF
or ON
Central fault display OFF or
ON
Mixer, mixer open or mixer
close
Solar pump OFF or ON
Solar pump ...h
Various languages
Explanations
Output 20
Internal extension
External extension or extension kit for one heating circuit with mixer installed
Display only if the external extension is installed
Display only if the external extension is installed
Display only if the external extension is installed
Display only if the extension kit for one heating
circuit with mixer is installed
Display only if Vitosolic is installed
Hours run
Each language can be selected as permanent
display language with d.
Constant temperature control units
3. Press c.
1. Press c.
2. Select the required operating condition scan with a or b.
3
5
65 °C/°F * 1
50 °C/°F * 1
5□
6
263572
45 °C/°F * 1
70 °C/°F * 1
h
*1 Display
70
Explanations
Outside temperature sensor - actual
value (only if an outside temperature
sensor is connected)
Boiler temperature sensor - actual value
Cylinder temperature sensor - actual
value
Solar - actual DHW temperature
Actual value - collector sensor
Burner hours run
in °F if the relevant code has been selected and with the fourth display digit.
5692 548 GB
Operating condition display (subject to system equipment level)
1
15 °C/°F * 1
Service scans
Scanning operating conditions and sensors (cont.)
Explanations
Burner starts
Hours run - solar circuit pump
Solar energy in kW/h
5692 548 GB
Operating condition display (subject to system equipment level)
030529
001417
h
002850
71
Troubleshooting
Call up fault history of fault codes
The last 10 faults are saved and may be called up.
1. Press G and d simultaneously
for approx. 2 seconds.
2. Call up the individual fault codes
with a or b.
Order in which
fault codes
occur
1
.
.
.
10
Fault code
Latest fault code
.
.
.
10. last fault code
All saved fault codes can be
deleted with e.
3. Press d.
Call up current fault codes
Red fault indicator U flashes for all
faults.
Fault flashes in the programming unit
display when a fault message is
issued.
5692 548 GB
A fault in the burner control unit
causes the display to flash E.
72
Troubleshooting
Call up current fault codes (cont.)
Control unit faults
1. Find current fault with c.
2. Select additional fault codes
with a and b.
3. Acknowledge fault
The fault can be acknowledged
with d. The fault message in the
display will be hidden, but red fault
indicator A continues to flash. A
new fault message will be shown in
the display if an acknowledged fault
is not removed by 07:00 h the following day.
Fault on the burner control unit
1. Find current fault with c.
2. Select additional fault codes
with a and b.
3. Acknowledge fault
5692 548 GB
The fault can be acknowledged
with d. The fault message in the
display will be hidden, but red fault
indicator A continues to flash. A
new fault message will be shown in
the display if an acknowledged fault
is not removed by 07:00 h the following day.
73
Troubleshooting
Call up current fault codes (cont.)
4. E in the display indicates that the
burner control unit is locked out.
After the fault has been removed,
acknowledge by pressing reset E.
Fault display design
A Fault symbol
B Plain text fault display (only for
weather-compensated control
units)
C Fault number
D Fault code
1. Calling up acknowledged fault
messages
Press d for approx. 3 seconds.
The fault will then be displayed.
Fault display in plain text
& Burner control unit
& Outside temperature sensor
& Flow sensor
& Boiler sensor
& Mixed flow sensor
& DHW cylinder sensor
& Flue gas sensor
& DHW outlet sensor
& Room temperature sensor
& Collector sensor
& Solar DHW sensor
& Remote control
2. Select the acknowledged fault
with a or b.
Checking and acknowledging faults
5692 548 GB
Weather-compensated control unit
Red fault indicator U flashes for all
faults.
A fault message code flashes in the
programming unit display when a fault
message is issued.
Any fault codes present may be called
up with a or b.
74
Troubleshooting
Checking and acknowledging faults (cont.)
Constant temperature control units
Note
The fault can be acknowledged
with d. The fault message in the display will be hidden, but the red fault
indicator U continues to flash. A new
fault message will be displayed if an
acknowledged fault is not removed by
the following morning.
5692 548 GB
Calling up acknowledged fault messages
Press d for approx. 2 seconds;
select the acknowledged fault with a
or b.
Fault code Const.
in the display
0F
X
Weath.
comp.
X
10
X
X
18
X
X
20
X
X
28
X
X
System
Cause
characteristics
Control
Maintenance
mode
Remedy
Carry out
maintenance.
Set code 24:0
after maintenance.
Controls
Outside temperaCheck the
according ture sensor shorted outside temto 0 °C out- out
perature senside temsor (see
perature
page 84)
Outside temperature sensor lead
break
Check the
System flow temControls
low loss
perature sensor
without
header senshorted out
flow temsor (see
perature
page 85).
sensor
(low loss
header)
System flow temperature sensor
lead break
75
Troubleshooting
Checking and acknowledging faults (cont.)
Weath.
comp.
X
38
X
X
40
X
48
X
50
X
X
58
X
X
51
X
X
59
X
X
92
X
X
9A
X
X
93
X
X
9B
X
X
94
X
X
76
System
Cause
characteristics
Burner
Boiler temperature
blocked
sensor shorted out
Mixer
closes
No DHW
heating
No DHW
heating
Control
mode
Control
mode
Control
mode
Boiler temperature
sensor lead break
Heating circuit M2
flow temperature
sensor shorted out
Heating circuit M2
flow temperature
sensor lead break
Cylinder temperature sensor/comfort
sensor/loading
sensor shorted out
Cylinder temperature sensor/comfort
sensor/loading
sensor lead break
Cylinder temperature sensor 2/outlet
sensor shorted out
Cylinder temperature sensor 2/outlet
sensor lead break
Solar: Collector
temperature sensor
shorted out
Collector temperature sensor lead
break
Solar: Sensor S3
shorted out
Sensor S3 lead
break
Solar: Cylinder
temperature sensor
shorted out
Remedy
Check the
boiler temperature sensor (see
page 85)
Check the
flow temperature sensor
Check sensors (see
page 85)
Check sensors (see
page 85)
Check sensor
Check sensor
Check sensor
5692 548 GB
Fault code Const.
in the display
30
X
Troubleshooting
Checking and acknowledging faults (cont.)
Fault code Const.
in the display
9C
X
Weath.
comp.
X
9F
X
X
A7
X
Control
mode
Faulty operating
interface
Burner
blocked
Flue gas temperature sensor short
circuit
b0
X
X
b8
X
X
b1
X
X
Control
mode
b4
X
X
b5
X
X
Internal error analog converter
Internal error
b7
X
X
Emissions
test mode
Control
mode
Burner
blocked
Mixer M2
continues
to move
Communication
fault - extension kit
for mixer circuit M2
bA
5692 548 GB
System
Cause
characteristics
Cylinder temperature sensor lead
break
Control
Solar control unit
mode
error message
X
Flue gas temperature sensor break
Communication
fault – programming unit (internal)
Boiler coding card
missing, faulty or
incorrect card
inserted
Remedy
See solar
control unit
service
instructions
Replace
operating
interface
Check the
flue gas temperature sensor (see
page 87)
Check connections and
replace the
programming
unit, if necessary
Replace control unit
Replace control unit
Plug in the
boiler coding
card or
replace, if
faulty
Check the
extension kit
connections
and coding.
Start the
extension kit.
77
Troubleshooting
Checking and acknowledging faults (cont.)
Fault code Const.
in the display
bC
Weath.
comp.
X
System
characteristics
Control
mode without remote
control
Cause
Remedy
Communication
fault - Vitotrol
remote control
heating circuit A1
Check connections,
cable, coding
address A0
and the
remote control DIP
switches
bd
X
bE
X
Control
mode without remote
control
Control
mode
Communication
fault - Vitotrol
remote control
heating circuit M2
Vitotrol remote
control incorrectly
encoded
bF
X
X
X
C5
X
X
5692 548 GB
C2
Check the
DIP switch
settings of
the remote
control
Control
Incorrect LON com- Replace the
mode
munication module LON communication module
Control
Communication
Check conmode
fault - solar control nections and
unit
coding
address 54.
Check coding
Communication
Control
address 30
error - variable
mode,
settings;
max. pump speed internal
check the
pump
speed
heating circuit pump
DIP switch
settings.
78
Troubleshooting
5692 548 GB
Checking and acknowledging faults (cont.)
Fault code Const.
in the display
C6
Weath.
comp.
X
C7
X
X
Cd
X
X
CE
X
X
CF
X
dA
X
db
X
System
characteristics
Control
mode,
max. pump
speed
Cause
Remedy
Check coding
address E5
settings;
check the
heating circuit pump
DIP switch
settings
Control
Communication
Check coding
mode,
fault - variable
address E5
max. pump speed heating cirsettings;
speed
cuit pump, heating check the
circuit A1
heating circuit pump
DIP switch
settings
Control
Communication
Check the
mode
fault Vitocom 100
Vitocom 100
(KM BUS)
and connections
Control
Communication
Check conmode
error - ext. extennections and
sion
coding
address 2E
settings.
Replace the
Control
Communications
mode
fault - LON commu- LON communication modnication module
ule
Room temperature Check the
Control
mode with- sensor heating cir- room temcuit A1 shorted out perature senout room
sor - heating
influence
circuit A1
Heating circuit M2
Check the
room temroom temperature
sensor shorted out perature sensor - heating
circuit M2
Communication
fault - variable
speed heating circuit pump, heating
circuit M2
79
Troubleshooting
Checking and acknowledging faults (cont.)
Weath.
comp.
X
dE
X
E4
X
X
E5
X
X
E6
X
F0
F1
80
System
Cause
characteristics
Room temperature
sensor heating circuit A1 lead break
Heating circuit M2
room temperature
sensor lead break
Burner
blocked
Burner
blocked
Fault - supply voltage
Internal error
X
Burner in
fault state
Flue gas/air supply
system blocked
X
X
Internal error
X
X
Burner
blocked
Burner in
fault state
Flue gas temperature limiter has
responded
Remedy
Check the
room temperature sensor - heating
circuit A1
Check the
room temperature sensor - heating
circuit M2
Replace control unit
Check the
ionisation
electrode and
leads. Check
flue gas system for
soundness.
Press E.
Check the
flue gas/air
supply system. Check
the differential pressure
sensor.
Press E.
Replace control unit
Check the
heating system water
level. Vent
the heating
system.
Press reset
E no sooner
than after
20 minutes.
5692 548 GB
Fault code Const.
in the display
dd
Troubleshooting
Checking and acknowledging faults (cont.)
Weath.
comp.
X
F3
X
X
F4
X
X
System
Cause
Remedy
characteristics
Burner in
Temperature limiter Check the
fault state has responded
heating system water
level. Check
the circulation pump.
Vent the heating system.
Check the
temperature
limiter and
leads.
Press E.
Burner in
The flame signal is Check the
fault state already present at
ionisation
burner start
electrode and
leads.
Press E.
Burner in
No flame signal is
Check the
fault state present
ionisation
electrode and
leads, measure the ionisation current, check
the gas pressure, check
the gas combination
valve, ignition, ignition
module, ignition electrodes and the
condensate
drain.
Press E.
5692 548 GB
Fault code Const.
in the display
F2
X
81
Troubleshooting
Checking and acknowledging faults (cont.)
Weath.
comp.
X
System
Cause
characteristics
Burner
Differential presblocked
sure sensor faulty
F8
X
X
Burner in
fault state
Fuel valve closes
too late
F9
X
X
Burner in
fault state
Fan speed too low
at burner start
FA
X
X
Burner in
fault state
Fan speed too high
at burner start
Fd
X
X
Burner
blocked
Burner control unit
fault
82
Remedy
Check the differential pressure sensor
and lead.
Check gas
combination
valve. Check
both control
paths.
Press E.
Check the
fan, check the
fan cables
and supply,
check the fan
control.
Press E.
.
Check the
fan, check the
fan cables,
check the fan
control.
Press E.
Check the
ignition electrodes and
leads. Check
whether a
strong interference
(EMC) field
exists near
the equipment.
Press E.
If the fault is
not removed,
replace the
control unit.
5692 548 GB
Fault code Const.
in the display
F7
X
Troubleshooting
Checking and acknowledging faults (cont.)
Fault code Const.
in the display
FE
X
Weath.
comp.
X
FF
X
5692 548 GB
X
System
Cause
Remedy
characteristics
Burner
Strong interference Remove EMC
blocked
(EMC) field nearby; interference.
alternatively boiler If the equipment will not
coding card or
restart, check
main PCB faulty
the boiler
coding card
and replace,
or replace the
control unit.
Burner
Internal error
Remove EMC
blocked
interference.
If the equipment will not
restart, check
the boiler
coding card
and replace,
or replace the
control unit.
83
Troubleshooting
Repairs
Checking the outside temperature sensor (weather-compensated control unit)
1. Pull plug X3 from the control unit.
2. Test the resistance of the outside
temperature sensor across terminals X3.1 and X3.2 on the pulled
plug and compare with the curve.
3. Where actual values strongly deviate from the curve values, disconnect the wires at the sensor and
repeat test directly at the sensor.
5692 548 GB
4. Depending on the result, replace
cable or outside temperature sensor.
84
Troubleshooting
Repairs (cont.)
Check the boiler temperature sensor, cylinder temperature
sensor or the flow temperature sensor for low loss header
5692 548 GB
1. Boiler temperature sensor: Pull the
leads from boiler temperature
sensor A and measure the resistance.
Cylinder temperature sensor: Pull
the plug % from the cable harness
on the control unit and measure the
resistance.
Flow temperature sensor: Pull plug
X3 from the control unit and measure the resistance across terminals X3.4 and X3.5.
85
Troubleshooting
Repairs (cont.)
2. Check the sensor resistance and
compare actual values with the
curve.
3. Replace the sensor in case of
severe deviation.
Danger
The boiler temperature sensor is immersed in the heating water (risk of scalding).
Drain the boiler before replacing the sensor.
Checking loading temperature sensor
1. Pull the cables off loading temperature sensor A.
5692 548 GB
2. Check the sensor resistance and
compare actual values with the
curve.
86
Troubleshooting
Repairs (cont.)
3. Replace the sensor in case of
severe deviation.
Danger
The loading temperature
sensor is immersed in the
heating water (risk of scalding).
Drain the boiler before replacing the sensor.
Checking the flue gas temperature sensor
The flue gas temperature sensor locks out the boiler when the permissible flue
gas temperature is exceeded. The lockout can be reset no sooner than after 20
minutes by pressing reset E.
5692 548 GB
Note
The equipment will also be locked out again for 20 minutes if the mains power
supply is switched OFF.
87
Troubleshooting
Repairs (cont.)
1. Pull the leads from the flue gas
temperature sensor A .
2. Check the sensor resistance and
compare actual values with the
curve.
5692 548 GB
3. Replace the sensor in case of
severe deviation.
88
Troubleshooting
Repairs (cont.)
Checking plate heat exchanger
1. Shut off and drain the boiler on the
primary and the secondary side.
2. Release the side closures and
pivot the control unit forward.
5. Check the secondary side for scaling and, if necessary, replace the
plate heat exchanger.
3. Remove the siphon.
6. Check the primary connections for
contamination and, if necessary,
replace the plate heat exchanger.
4. Release fittings A, screws B and
pull plate heat exchanger C forward.
7. Install in reverse order using new
gaskets. Lubricate the new gaskets/seals.
5692 548 GB
Note
During removal, small amounts of
water may trickle out and escape
from the removed plate heat
exchanger.
89
Troubleshooting
Repairs (cont.)
Checking the thermocouple
If the burner control unit cannot be
reset after a fault shutdown, although
the boiler water temperature is below
approx. 90 °C:
& Pull the leads from
thermocouple A.
& Check the continuity of the thermocouple with a multimeter.
& Remove the faulty thermocouple.
& Install a new thermocouple.
& After commissioning, press reset
button E on the control unit.
Checking and replacing pressure differential sensor
5692 548 GB
Check the sensor in case of fault messages concerning the differential pressure
sensor:
& correct installation
& electrical connection
& correct position of the O-rings inside the adaptor
& are the test nipples closed with plugs?
Replace the sensor if fault messages persist.
90
Troubleshooting
Repairs (cont.)
Checking O-rings:
1. Pull off the electrical plug A.
2. Remove sensor B by pulling it
upwards.
3. Ensure that both O-ringsC are
properly inserted into aperture
adaptor retainers D.
4. Insert the sensor with connection
nipples into the gas combination
valve adaptor and push in until it
clicks into place.
5692 548 GB
5. Reconnect the electrical plug-in
connector on the sensor.
91
Troubleshooting
Repairs (cont.)
Checking the fuse
3. Remove cover A.
2. Release the lateral closures and
pivot the control unit down.
4. Check fuse F1.
5692 548 GB
1. Switch OFF the mains power.
92
Troubleshooting
Repairs (cont.)
Extension kit for heating circuit with mixer
Checking the rotational direction of the mixer motor
1. Switch OFF the motor and restart it
at the main ON/OFF switch. The
device will carry out the following
self-test:
& Mixer close (150 seconds)
& Pump ON (10 seconds)
& Mixer open (10 seconds)
& Mixer close (10 seconds)
Then standard control mode recommences.
2. Note the rotational direction of the
mixer motor during the self-test.
Then set the mixer manually to the
open position.
A Rotational direction switch
B ON/OFF switch 8
Note
The flow temperature sensor must
now sense a higher temperature. If
the temperature falls, either the
motor is turning in the wrong direction or the mixer set is incorrectly
fitted.
Mixer installation instructions
5692 548 GB
3. Adjust the rotational direction of the
mixer motor (if required).
& Switch position I for heating
return from the l.h. side (as delivered condition).
& Switch position II for heating
return from the r.h. side.
93
Troubleshooting
Repairs (cont.)
Checking Vitotronic 050 (accessory)
5692 548 GB
Vitotronic 050 is connected with the control unit via the LON system. To test the
connection, implement a user check on the boiler control unit (see page 33).
94
Function description
Constant temperature control unit
Heating mode
The set boiler water temperature will
be maintained in the Central heating
and DHW heating G program, when
a demand is raised by the room temperature-dependent clock thermostat.
If no demand is received, the boiler
water temperature will be held at the
defaulted frost protection temperature. The burner control unit limits the
boiler water temperature: through the
control thermostat to 74 °C, and
through the electronic temperature
limiter to 82 °C. The temperature limiter in the safety chain locks out the
burner control unit at a boiler water
temperature of 100 °C.
The DHW is regulated to the set temperature via the loading temperature
sensor. The cylinder continues to be
heated up after the draw off process
has ceased, until the set DHW temperature has been reached at the
cylinder temperature sensor. The
DHW loading pump and the three-way
diverter valve remain ON for a further
30 seconds.
5692 548 GB
Heating the DHW loading cylinder
from cold
The heating circuit pump is switched
ON, and the three-way diverter valve
will be activated, if the cylinder temperature sensor recognises a temperature lower than the set
temperature.
Then,
& at a boiler water temperature ≥ than
the set DHW temperature, the DHW
loading pump is switched ON.
& at a boiler water temperature ≤ than
the DHW set temperature, the burner is switched ON and, after the
required boiler water temperature
has been reached, the DHW loading
pump is switched ON.
The cylinder is then loaded up to the
set DHW temperature. Heating stops
when the set temperature has been
reached at the cylinder temperature
sensor and at the loading temperature
sensor. The DHW loading pump and
the three-way diverter valve remain
ON after loading for a further 30 seconds.
Reheating when DHW is drawn off
When DHW is drawn off, cold water
enters at the bottom of the cylinder.
The heating circuit pump is switched
ON, and the three-way diverter valve
is activated, if the cylinder temperature sensor recognises a temperature
lower than the set temperature.
Then,
& at a boiler water temperature ≥ than
the set DHW temperature, the DHW
loading pump is switched ON.
& at a boiler water temperature ≤ than
the DHW set temperature, the burner is switched ON and, after the
required boiler water temperature
has been reached, the DHW loading
pump is switched ON.
95
Function description
Constant temperature control unit (cont.)
Heating programs
Comfort mode
Information
Basic settings
Confirmation/acknowledgement
F
G
H
K
Setting values
DHW temperature
Emissions test function
Boiler water temperature
5692 548 GB
A
B
C
D
E
96
Function description
Weather-compensated control unit
Heating mode
The control unit determines a set boiler water temperature subject to outside temperature or room temperature
(if a room temperature-dependent
remote control is connected) and the
slope/level of the heating curve. The
determined set boiler water temperature is then transferred to the burner
control unit. From the set and actual
boiler water temperatures, the burner
control unit calculates the modulation
level and controls the burner accordingly. The burner control unit limits the
boiler water temperature: through the
control thermostat to 74 °C and
through the electronic temperature
limiter to 82 °C. The thermocouple in
the safety chain locks out the burner
control unit at a boiler water temperature of 100 °C.
Reheating when DHW is drawn off
When DHW is drawn off, cold water
enters at the bottom of the cylinder.
The heating circuit pump is switched
ON, and the three-way diverter valve
is activated, if the cylinder temperature sensor recognises a temperature
lower than the set temperature.
Then,
& at a boiler water temperature ≥ than
the set DHW temperature, the DHW
loading pump is switched ON.
& at a boiler water temperature ≤ than
the DHW set temperature, the burner is switched ON and, after the
required boiler water temperature
has been reached, the DHW loading
pump is switched ON.
The DHW is regulated to the set temperature via the loading temperature
sensor. The cylinder continues to be
heated up after the draw off process
has ceased, until the set DHW temperature has been reached at the
cylinder temperature sensor. The
DHW loading pump and the three-way
diverter valve remain ON for a further
30 seconds.
5692 548 GB
Heating the DHW loading cylinder
from cold
The heating circuit pump is switched
ON, and the three-way diverter valve
will be activated, if the cylinder temperature sensor recognises a temperature lower than the set
temperature.
Then,
& at a boiler water temperature ≥ than
the set DHW temperature, the DHW
loading pump is switched ON.
& at a boiler water temperature ≤ than
the DHW set temperature, the burner is switched ON and, after the
required boiler water temperature
has been reached, the DHW loading
pump is switched ON.
The cylinder is then loaded up to the
set DHW temperature. Heating stops
when the set temperature has been
reached at the cylinder temperature
sensor and at the loading temperature
sensor. The DHW loading pump and
the three-way diverter valve remain
ON after loading for a further 30 seconds.
97
Function description
Weather-compensated control unit (cont.)
H
K
L
M
N
O
P
R
Party mode
Basic settings
Confirmation/acknowledgement
Setting values
DHW temperature
Emissions test function
Reduced room temperature
Date/time
5692 548 GB
A Heating circuit time program
B DHW time program
and DHW circulation (if connected
to the control unit)
C Holiday program
D Information
E Heating programs
F Standard room temperature
G Economy mode
98
Function description
Internal extension H1
Internal extension H1
An external safety valve can be connected to connection gD.
5692 548 GB
The internal extension is integrated
into the control unit housing. The
cylinder loading pump is connected to
the relay output sK.
99
Function description
Extensions for external connections (accessory)
Internal extension H2
Set coding address 53 to 3.
An interlock for extractors can be connected to connection aBJ.
5692 548 GB
The internal extension is integrated
into the control unit housing. The
cylinder loading pump is connected to
relay output sK.
100
Function description
Extensions for external connections (accessory) (cont.)
External extension H1
aVD
&
External blocking
(terminals 2 - 3)
& External demand
(terminals 1 - 2)
& External operating mode changeover (terminals 1 - 2)
aVF External set value 0 to 10 V
aVG KM BUS
The allocation of function External
changeover of operating mode is
selected via coding address 91.
5692 548 GB
The external extension is connected
to the boiler control unit via the KM
BUS. The following functions can be
controlled or processed via this extension:
sÖ Heating circuit pump for heating
circuit without mixer
sK DHW circulation pump
fÖ Power supply
gÖ Central fault message
101
Function description
Extensions for external connections (accessory) (cont.)
External extension H2
aVD
&
External blocking
(terminals 2 - 3)
& External demand
(terminals 1 - 2)
& External operating mode changeover (terminals 1 - 2)
aVG KM BUS
The allocation of function External
changeover of operating mode is
selected via coding address 91.
5692 548 GB
The external extension is connected
to the boiler control unit via the KM
BUS. The following functions can be
controlled or processed via this extension:
sK DHW circulation pump
fÖ Power supply
102
Function description
Control functions
External operating mode changeover
The function External operating mode
changeover is connected via input
aVD of the external extension. With
coding address 91 you can select, for
which heating circuit the changeover
of operating mode should apply:
Coding
91:0
91:1
91:2
91:3
Changeover of operating mode applies
to:
No changeover
Heating circuit without mixer (A1)
Heating circuit with mixer (M2)
Heating circuit without mixer and heating
circuit with mixer
With coding address d5, you can
select in which direction the changeover should be made, for each heating circuit:
Coding
d5:0
d5:1
Changeover of operating mode applies
to:
Changeover towards Constantly reduced
or Constant standby mode (subject to the
selected set value)
Changeover towards Constant heating
mode
You can select the duration of the
operating mode changeover with coding address "F2".
Coding
5692 548 GB
F2:0
F2:1 to
F2:12
Changeover of operating mode applies
to:
No changeover of operating mode
Duration of the operating mode changeover 1 to 12 hours
103
Function description
Control functions (cont.)
The changeover of operating mode
remains active as long as the contact
remains closed, but no less than the
default duration selected with coding
address F2.
External blocking
The function External blocking is connected via input aVD of the external
extension.
In coding address 32 you can select
the influence the signal Ext. blocking
should have on the connected circulation pumps.
External demands
The function External demands is
connected via input aVD of the external extension.
In coding address 34 you can select
the influence the signal Ext. demands
should have on the connected circulation pumps.
In coding address 9b, you can select
the minimum set boiler water temperature in case of external demand.
Venting program
Note
Close the gas shut-off valve when
operating the venting program.
5692 548 GB
During the venting program, the circulation pump will be alternately
switched ON and OFF for 30 seconds
respectively over a period of
20 minutes.
The diverter valve is alternately
switched for a certain period towards
heating and DHW operation. The burner is switched OFF during the venting program.
The venting program is activated via
coding address 2F:1. The program is
automatically deactivated after
20 minutes, and the coding address is
set to 0.
104
Function description
Control functions (cont.)
Filling program
Note
Close the gas shut-off valve when
operating the filling program.
In the delivered condition, the diverter
valve is set to its central position,
enabling the system to be filled completely. After starting the control unit,
the diverter valve no longer goes into
its central position.
The diverter valve can be moved into
its central position via coding address
2F:2. The system can be filled completely, if the control unit is switched
OFF in this position.
Filling with the control unit switched ON
If the system is to be filled with the
control unit switched ON, the diverter
valve is moved into its central position
via coding address 2F:2, and the
pump is started. The burner shuts
down if this function is activated via
coding address 2F. The program is
automatically deactivated after
20 minutes, and the coding address is
set to 0.
Screed function
Various temperature profiles are
available for selection.
5692 548 GB
The screed drying functions enables
the drying of a freshly laid screed. For
this, always observe the instructions
issued by the screed manufacturer.
105
Function description
Control functions (cont.)
Temperature profile: Diagram 1 (DIN 4725 part 4) code F1:1
Temperature profile: Diagram 2 code F1:2
5692 548 GB
Temperature profile: Diagram 3 code F1:3
106
Function description
Control functions (cont.)
Temperature profile: Diagram 4 code F1:4
Temperature profile: Diagram 5 code F1:5
5692 548 GB
Temperature profile: Factory settings code F1:6 to F1:15
107
Designs
A1
§
108
Main PCB
Boiler temperature sensor
$
%
Cylinder temperature sensor
Loading temperature sensor
5692 548 GB
Connection and wiring diagrams – internal connections
Designs
Connection and wiring diagrams – internal connectio . . . (cont.)
Ionisation electrode
Flue gas temperature sensor
Step motor for diverter valve
Thermocouple
gF Ignition unit
a-Ö Fan motor
aNF Air pressure sensor
5692 548 GB
aA
aG
dÖ
fJ
109
Designs
A1
A2
110
Main PCB
Mains supply unit
A3
A4
Optolink
Burner control unit
5692 548 GB
Connection and wiring diagrams – external connections
Designs
Connection and wiring diagrams – external connectio . . . (cont.)
Operating interface
Coding card
Connection adaptor
LON communication module
Internal extension H1 or H2
ON/OFF switch
Reset button
Outside temperature sensor
Flow temperature sensor low
loss header
%
sÖ
sK
dG
fÖ
lH
Cylinder temperature sensor
Internal circulation pump
Loading pump
Gas solenoid valve
Power supply
Mains power supply - accessories and Vitotrol 100
a-Ö Fan motor
aYA Gas governor
aVG KM BUS
5692 548 GB
A5
A6
A7
A8
A9
S1
S2
!
?
111
Parts lists
Parts lists
001 Heat exchanger connection pipe
with gaskets
002 Flow pipework
003 DHW connecting pipe
004 DHW connecting pipe
005 Cylinder connecting pipe
006 Return connecting pipe
007 Gas connection flange
008 Stratification loading cylinder
009 Siphon
010 Condensate hose
011 Heat exchanger siphon connection
012 Heat exchanger
013 Cap plate (with item 014)
014 Profiled gasket
015 Clip nut
016 Interlocking connector
017 Boiler adaptor
018 Plug
019 Air inlet gasket Ø 125
020 Lip seal Ø 80
021 Boiler connection grommets
022 Connection line - diaphragm
expansion vessel
023 Diaphragm expansion vessel
024 Pressure gauge and fem. connection
025 Quick-acting air vent valve
026 Overflow valve
027 Safety valve
028 Air vent valve G⅜"
029 Linear step motor
030 Non-return valve
031 Ball valve R½" with handle
033 Flat seal set
034 Set of plug connector retainers
035 Safety spring
112
036 Plate heat exchanger
037 Gasket set - plate heat exchanger
040 Grommets (set)
051 Burner (with items 050, 052 to
064)
052 Ignition unit
055 Burner gauze assembly
056 Radial fan
057 Pressure transmitter
058 Gas train
059 Conversion kit for natural gas E
(gas restrictor)
060 Conversion kit for natural gas LL
(gas restrictor)
061 Conversion kit for LPG P (gas
restrictor)
064 Burner gauze assembly gasket
100 Vitodens control unit
101 Rear cover
102 Locking clips (10 pieces)
103 Support
104 Pivot arm
105 Hinge pins (10 pieces)
106 Damper
107 Pressure gauge retainer
108 Clip (10 pieces)
109 Hinge (10 pieces)
110 Boiler coding card
111 Fuse 6.2 A s (10 pieces)
112 Operating interface for constant
temperature operation
113 Operating interface for weathercompensated operation
122 LON module
123 PCB adaptor - LON module
151 Outside temperature sensor
152 Cylinder temperature sensor
5692 548 GB
Spare parts information
Quote the type and serial no. (see type plate) and the item no. of the required
part (as per this parts list).
Obtain standard parts from your local supplier.
Parts lists
Parts lists (cont.)
153
154
155
200
201
202
203
204
205
206
300
301
352
354
355
Flue gas temperature sensor
Thermocouple
Temperature sensor
Side panel
Front top panel
Rear panel, top
Front panel, top
Front panel, bottom
Tie-bar
Adjustable foot
Circulation pump motor
Circulation pump motor
Gasket
Anode flange with gasket
Thermal insulation – flange
Wear parts
050 Burner gasket
053 Ignition electrode with gasket
054 Ionisation electrode with gasket
353 Magnesium anode Ø = 26 × 280/
250
116
117
118
119
120
207
208
209
350
351
400
401
403
404
A
Heat conducting paste
Burner maintenance set
Set of small burner parts
Adaptor - ionisation current test
cable
Cable harness X8/X9
Cable harness 100/35/34 (auxiliary earth)
Step motor connecting cable
Cable harness ionisation/KM
BUS (internal)
Internal ionisation lead
Fastenings
Touch-up paint stick, Vitowhite
Touch-up spray paint, Vitowhite
Seal washer
Strain relief
Operating instructions for constant temperature operation
Operating instructions for
weather-compensated operation
Installation instructions
Service instructions
Type plate
5692 548 GB
Parts not shown
032 Gasket set - plug-in connector
038 Special grease
039
062
063
115
113
Parts lists
5692 548 GB
Parts lists (cont.)
114
Parts lists
5692 548 GB
Parts lists (cont.)
115
Parts lists
5692 548 GB
Parts lists (cont.)
116
Parts lists
5692 548 GB
Parts lists (cont.)
117
Parts lists
5692 548 GB
Parts lists (cont.)
118
Parts lists
5692 548 GB
Parts lists (cont.)
119
Commissioning/service reports
Commissioning/service reports
Setting and test values
Static pressure
Set value
Date:
By:
mbar
Supply pressure (flow pressure)
= for natural gas E
mbar
= for natural gas LL
mbar
= for LPG
mbar
Initial start-up
max. 57.5 mbar
17.4 to
57.5 mbar
17.4 to
57.5 mbar
42.5 to
57.5 mbar
Tick gas type
Carbon dioxide content CO2
& at lower rated output
&
at upper rated output
Oxygen content O 2
& at lower rated output
&
at upper rated output
% by
vol.
% by
vol.
% by
vol.
% by
vol.
ppm
ppm
Ionisation current
µA
min. 5 µA
5692 548 GB
Carbon monoxide content CO
& at lower rated output
& at upper rated output
120
Commissioning/service reports
Commissioning/service reports (cont.)
Maintenance/
service
Maintenance/service
5692 548 GB
Maintenance/ser- Maintenance/
vice
service
121
Commissioning/service reports
Commissioning/service reports (cont.)
Setting and test values
Static pressure
Set value
Date:
By:
mbar
Supply pressure (flow pressure)
= for natural gas E
mbar
= for natural gas LL
mbar
= for LPG
mbar
Maintenance/
service
max. 57.5 mbar
17.4 to
57.5 mbar
17.4 to
57.5 mbar
42.5 to
57.5 mbar
Tick gas type
Carbon dioxide content CO2
& at lower rated output
&
at upper rated output
Oxygen content O 2
& at lower rated output
&
at upper rated output
% by
vol.
% by
vol.
% by
vol.
% by
vol.
ppm
ppm
Ionisation current
µA
min. 5 µA
5692 548 GB
Carbon monoxide content CO
& at lower rated output
& at upper rated output
122
Commissioning/service reports
Commissioning/service reports (cont.)
Maintenance/
service
Maintenance/service
5692 548 GB
Maintenance/ser- Maintenance/
vice
service
123
Commissioning/service reports
Commissioning/service reports (cont.)
Setting and test values
Static pressure
Set value
Date:
By:
mbar
Supply pressure (flow pressure)
= for natural gas E
mbar
= for natural gas LL
mbar
= for LPG
mbar
Maintenance/
service
max. 57.5 mbar
17.4 to
57.5 mbar
17.4 to
57.5 mbar
42.5 to
57.5 mbar
Tick gas type
Carbon dioxide content CO2
& at lower rated output
&
at upper rated output
Oxygen content O 2
& at lower rated output
&
at upper rated output
% by
vol.
% by
vol.
% by
vol.
% by
vol.
ppm
ppm
Ionisation current
µA
min. 5 µA
5692 548 GB
Carbon monoxide content CO
& at lower rated output
& at upper rated output
124
Commissioning/service reports
Commissioning/service reports (cont.)
Maintenance/
service
Maintenance/service
5692 548 GB
Maintenance/ser- Maintenance/
vice
service
125
Specification
Specification
230 V~
50 Hz
6.3 A~
I
IP X 4 D to
EN 60529
Permissible ambient temperature
& in operation:
0 to +40 °C
& during storage
-20 to +65 °C
and transport:
Electronic temperature limiter setting:
Temperature limiter
setting:
Mains fuse:
100 °C (fixed)
Max. 16 A
Power consumption
& Circulation pump:
& Burner:
& Control unit:
Gas fired boiler, category II 2ELL3P
Rated output TV/T R 50/30 °C
Rated output range
Connection values * 1
Relative to the max. load
with
with H uB
natural gas E
9.45 kWh/m3
34.02 MJ/m 3
natural gas LL
8.13 kWh/m 3
29.25 MJ/m 3
LPG
12.79 kWh/m 3
46.04 MJ/m 3
Product ID
Product characteristics (to EnEV [Germany])
Rated output range
Efficiency µ for
& 100 % of rated output
& 30 % of rated output
Standby loss q B,70* 2
Power consumption * 2 for
& 100 % of rated output
& 30 % of rated output
*1 The
82 °C
Max. 115 W
Max. 60 W
Max. 10 VA
kW
kW
6.6 to 26
6.3 to 24.7
m 3 /h
2.65
m 3 /h
3.08
m 3 /h
1.94
_-0085 BO
0338
kW
6.6 to 26
%
%
%
96.3
107.4
0.7
W
W
207
69
supply values are only for reference (e.g. in the gas contract application) or to estimate the supplementary volumetric settings. Because of factory settings, the gas pressure must not be altered from these values. Reference: 15 °C, 1013 mbar.
*2 Max. limit to EnEV
126
5692 548 GB
Rated voltage:
Rated frequency:
Rated current :
Safety class:
Protection level:
Certificates
Declaration of conformity
Declaration of conformity for Vitodens 333
We, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, declare as sole
responsible body, that the product
Vitodens 333
conforms to the following standards:
DIN 4702–6
DIN 4753
EN 297
EN 483
EN 625
EN 677
EN 50 165
EN 60 335
EN 61 000-3-2
EN 61 000-3-3
This product is designated in accordance with the following directives:
90/396/EEC
89/336/EEC
73/23/EEC
92/42/EEC
97/23/EC
as follows:
_-0085
EC Declaration of conformity by an authorised body according to EMVG article
10.2 Certificate number: E9 02 08 1730.
This product complies with the requirements of the Efficiency Directive
(92/42/EEC) for:
Condensing boilers
The product characteristics determined as system values for the product Vitodens 333 as part of EC type testing according to the Efficiency Directive
(see specification table), can be utilised to assess the energy consumption of
heating and ventilation equipment to DIN V 4701-10 which is specified by the
EnEV [Germany].
Allendorf, 14.01.04
Viessmann Werk GmbH&Co KG
5692 548 GB
pp. Manfred Sommer
127
Certificates
Manufacturer's certificate according to the 1st BImSchV [Germany]
We, Viessmann Werke GmbH & Co KG, D-35107 Allendorf, confirm that the following product meets the NO x limits specified by 1st BImSchV Paragraph 7 (2)
[Germany]:
Vitodens 333
Allendorf, 14.01.04
Viessmann Werk GmbH&Co KG
5692 548 GB
pp. Manfred Sommer
128
Keyword index
Keyword index
A
Adjusting the room temperature
. . . .
35
B
Boiler temperature sensor . . . . . . . . . . . . .
Brief scans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Burner gauze assembly . . . . . . . . . . . . . . . .
Burner installation . . . . . . . . . . . . . . . . . . . . . . . .
Burner removal . . . . . . . . . . . . . . . . . . . . . . . . . . . .
85
63
20
22
19
C
Checking the anode . . . . . . . . . . . . . . . . . . . . . 25
Checking the differential pressure
sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Checking the magnesium anode . . . 25
Cleaning agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Cleaning the combustion chamber . 22
Cleaning the DHW cylinder . . . . . . . . . . . 24
Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Code 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Code 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Coding during commissioning . . . . . . . 27
Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Condensate drain . . . . . . . . . . . . . . . . . . . . . . . . . 23
Connection diagrams . . . . . . . . . . . . . . . . . 108
Cylinder temperature sensor . . . . . . . . . 85
D
Declaration of conformity . . . . . . . . . . . . 127
Deleting codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
G
Gas combination valve . . . . . . . . . . . . . . . . . 13
Gas supply pressure . . . . . . . . . . . . . . . . . . . . 14
Gas type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
H
Heating curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Heating curve slope . . . . . . . . . . . . . . . . . . . . . 35
Heating surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . 22
I
Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition electrodes . . . . . . . . . . . . . . . . . . . . . . . .
Ionisation current . . . . . . . . . . . . . . . . . . . . . . . . .
Ionisation electrode . . . . . . . . . . . . . . . . . . . . . .
21
21
26
21
L
Language selection . . . . . . . . . . . . . . . . . . . . . . . 9
Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Level heating curve . . . . . . . . . . . . . . . . . . . . . . 35
Loading temperature sensor . . . . . . . . . 86
LON communication module . . . . . . . . . 32
LON system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
LON user check . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
M
Manufacturer's Declaration
. . . . . . . . .
128
5692 548 GB
E
Extension kit for heating circuit with
mixer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Extension
& external . . . . . . . . . . . . . . . . . . . . . . . . . . 101, 102
& internal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99, 100
External blocking . . . . . . . . . . . . . . . . . . . . . . . 104
External demand . . . . . . . . . . . . . . . . . . . . . . . . 104
External demands . . . . . . . . . . . . . . . . . . . . . . 104
F
Fault history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Fault message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Fault messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Filling function . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Filling program . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Filling the system . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Finding errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Finding faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Flue gas temperature sensor . . . . . . . . . 88
Function descriptions . . . . . . . . . . . . . . . . . . . 95
Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
129
Keyword index
Keyword index (cont.)
O
Operating mode changeover . . . . . . . 103
Outside temperature sensor . . . . . . . . . . 84
P
Parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Plate heat exchanger . . . . . . . . . . . . . . . . . . . 89
Product characteristics . . . . . . . . . . . . . . . 126
Protective anode
& Checking the anode . . . . . . . . . . . . . . . . . . . 23
R
Relay test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing the anode . . . . . . . . . . . . . . . . . . . .
Replacing the magnesium anode . .
Resetting the coding to the as
delivered condition . . . . . . . . . . . . . . . . . . . . . . .
67
25
25
61
S
Safety chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Scanning operating conditions . . . . . . 69
Scanning sensors . . . . . . . . . . . . . . . . . . . . . . . . 69
Screed drying . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Screed function . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Service level summary . . . . . . . . . . . . . . . . . 62
Service report . . . . . . . . . . . . . 120, 122, 124
Setting the output . . . . . . . . . . . . . . . . . . . . . . . . . 17
Setting up LON user numbers . . . . . . . 32
Siphon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Slope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Soundness test, balanced flue
system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Static pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Supply pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
System designs . . . . . . . . . . . . . . . . . . . . . 27, 39
System pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
T
Temperature scans . . . . . . . . . . . . . . . . . . . . . . .
Testing functions . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermocouple . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
63
67
67
90
V
Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Venting program . . . . . . . . . . . . . . . . . . . . . . . . 104
Vitotronic 050 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
5692 548 GB
W
Wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
130
131
5692 548 GB
Viessmann Limited
Hortonwood 30, Telford, TF1 7YP, GB
Telephone: +44 1952 675000
Fax: +44 1952 675040
www.viessmann.co.uk
132
chlorine-free bleached paper
Printed on environmentally-friendly,
Subject to technical modifications
Compact gas fired condensing boiler
Type WS3A
6.6 to 26 kW
from serial no.
7177 362 3 00001
5692 548 GB
Applicability
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