Viessmann Vitodens 200-W System Operating instructions

Installation and service instructions
for contractors
VIESMANN
Vitodens 200-W
Type B2HA, B2KA, 3.2 to 35 kW
Wall mounted gas condensing boiler
Natural gas and LPG version
For applicability, see the last page
VITODENS 200-W
5772 980 GB 4/2013 Please keep safe.

2
Please follow these safety instructions closely to
prevent accidents and material losses.
Safety instructions explained
Danger
This symbol warns against the risk of injury.
!Please note
This symbol warns against the risk of material
losses and environmental pollution.
Note
Details identified by the word "Note" contain additional
information.
Target group
These instructions are exclusively intended for quali-
fied contractors.
■Work on gas installations must only be carried out by
a registered gas fitter.
■Work on electrical equipment must only be carried
out by a qualified electrician.
■The system must be commissioned by the system
installer or a qualified person authorised by the
installer.
Regulations
Observe the following when working on this system:
■Statutory regulations regarding the prevention of
accidents
■Statutory regulations regarding environmental pro-
tection
■Codes of practice of the relevant trade associations
■All current safety regulations as defined by DIN, EN,
DVGW, TRGI, TRF, VDE and all locally applicable
standards
■Gas Safety (Installation & Use) Regulations
– the appropriate Building Regulation either the
Building regulations, the Building Regulation (Scot-
land), Building Regulations (Northern Ireland),
– the Water Fittings Regulation or Water Bylaws in
Scotland,
– the current I.E.E. Wiring Regulations.
If you smell gas
Danger
Escaping gas can lead to explosions which may
result in serious injury.
■Do not smoke. Prevent naked flames and
sparks. Do not switch lights or electrical appli-
ances on or off.
■Close the gas shut-off valve.
■Open windows and doors.
■Evacuate any people from the danger zone.
■Notify your gas or electricity supply utility from
outside the building.
■Shut off the electricity supply to the building
from a safe place (outside the building).
If you smell flue gas
Danger
Flue gas can lead to life-threatening poisoning.
■Shut down the heating system.
■Ventilate the installation site.
■Close all doors in the living space.
Flue systems and combustion air
Ensure that flue systems are clear and cannot be
sealed, for instance due to accumulation of conden-
sate or other causes. Ensure a sufficient supply of
combustion air.
Instruct system users that subsequent modifications to
the building characteristics are not permissible (e.g.
cable/pipework routing, cladding or partitions).
Danger
Life-threatening poisoning caused by carbon
monoxide in the flue gas occurs as a result of
leaking or blocked flue systems or an insufficient
supply of combustion air.
Ensure the flue system is in proper working
order. It must not be possible to close apertures
for interconnected combustion air supply.
Extractors
Operating appliances that extract air to the outside
(cooker hoods, extractors, air conditioning units, etc.)
can create negative pressure. If the boiler is operated
at the same time, this can lead to reverse flow of the
flue gas.
Danger
The simultaneous operation of the boiler and
appliances that extract air to the outside can
result in life threatening poisoning due to
reverse flow of the flue gas.
Fit an interlock circuit or take suitable steps to
ensure a sufficient supply of combustion air.
Safety instructions
Safety instructions
5772 980 GB

3
Working on the system
■Where gas is used as the fuel, close the main gas
shut-off valve and safeguard it against unintentional
reopening.
■Isolate the system from the power supply (e.g. by
removing the separate fuse or by means of a mains
isolator) and check that it is no longer 'live'.
■Safeguard the system against reconnection.
!Please note
Electronic assemblies can be damaged by elec-
trostatic discharge.
Prior to commencing any work, touch earthed
objects, such as heating or water pipes to dis-
charge static loads.
Repair work
!Please note
Repairing components that fulfil a safety func-
tion can compromise the safe operation of your
system.
Defective components must be replaced with
genuine Viessmann spare parts.
Auxiliary components, spare and wearing parts
!Please note
Spare and wearing parts that have not been tes-
ted together with the system can compromise its
function. Installing non-authorised components
and making non-approved modifications or con-
versions can compromise safety and may inva-
lidate our warranty.
For replacements, use only original spare parts
supplied or approved by Viessmann.
Safety instructions
Safety instructions (cont.)
5772 980 GB

4
1. Preparing for installation Intended use .......................................................................................... 7
Product information ................................................................................ 7
■Vitodens 200-W, type B2HA, B2KA .................................................... 7
Preparing for installation ........................................................................ 8
■Cold water installation ........................................................................ 9
■Shock arrestor .................................................................................... 9
2. Installation sequence Mounting the boiler and making connections ........................................ 10
■Fitting the connections ........................................................................ 10
Flue gas connection ............................................................................... 10
Condensate drain connection ................................................................ 11
Gas connection ...................................................................................... 11
Opening the control unit enclosure ........................................................ 12
Electrical terminals ................................................................................. 13
■Outside temperature sensor ! .......................................................... 14
■External demand via switching contact .............................................. 14
■External demand via 0 – 10 V input .................................................... 14
■External blocking via switching contact .............................................. 15
■Power supply for accessories at plug lH (230 V~) ............................. 16
■Power supply fÖ ................................................................................. 17
■Routing connecting cables ................................................................. 17
Closing the control unit enclosure and inserting the programming unit . 18
Fitting the front panel ............................................................................. 19
3. Commissioning, inspec-
tion, maintenance
Steps - commissioning, inspection and maintenance ............................ 20
4. Code 1 Calling up coding level 1 ........................................................................ 43
■Calling up coding level 1 ..................................................................... 43
"General"/Group 1 ................................................................................ 43
■Coding ................................................................................................ 44
"Boiler"/Group 2 ................................................................................... 45
■Coding ................................................................................................ 45
"DHW"/Group 3 ..................................................................................... 46
■Coding ................................................................................................ 46
"Solar"/Group 4 .................................................................................... 46
"Heating circuit ..."/Group 5 ................................................................ 47
■Coding ................................................................................................ 48
5. Code 2 Calling up coding level 2 ........................................................................ 52
■Calling up coding level 2 ..................................................................... 52
"General"/Group 1 ................................................................................ 52
■Coding ................................................................................................ 53
"Boiler"/Group 2 ................................................................................... 57
■Coding ................................................................................................ 58
"DHW"/Group 3 ..................................................................................... 58
■Coding ................................................................................................ 59
"Solar"/Group 4 .................................................................................... 60
■Coding ................................................................................................ 60
"Heating circuit ..."/Group 5 ................................................................ 62
■Coding ................................................................................................ 63
6. Diagnosis and service
scans
Service level .......................................................................................... 68
Diagnosis ............................................................................................... 68
■Operating data .................................................................................... 68
■Brief scan ............................................................................................ 69
Checking outputs (actuator test) ............................................................ 72
Index
Index
5772 980 GB

5
7. Troubleshooting Fault display ........................................................................................... 74
■Weather-compensated control unit ..................................................... 74
■Constant temperature control unit ...................................................... 74
Fault codes ............................................................................................ 75
Repair .................................................................................................... 83
■Checking the outside temperature sensor .......................................... 83
■Checking the boiler temperature sensor, cylinder temperature sen-
sor or low loss header flow temperature sensor ................................. 84
■Checking the outlet temperature sensor or comfort sensor (only for
gas condensing combi boilers) ........................................................... 85
■Checking the plate heat exchanger .................................................... 86
■Checking the flue gas temperature sensor ......................................... 86
■Checking the temperature limiter ........................................................ 87
■Checking the fuse ............................................................................... 87
■Extension kit, mixer ............................................................................ 88
■Checking the Vitotronic 200-H (accessory) ........................................ 89
8. Function description Constant temperature control unit ......................................................... 90
■Heating mode ..................................................................................... 90
■DHW heating with gas condensing combi boiler ................................ 90
■DHW heating with gas condensing boiler ........................................... 90
Weather-compensated control unit ........................................................ 91
■Heating mode ..................................................................................... 91
■DHW heating with gas condensing combi boiler ................................ 91
■DHW heating with gas condensing boiler ........................................... 91
■Boosting DHW heating ....................................................................... 91
Internal extensions (accessories) .......................................................... 92
■Internal extension H1 .......................................................................... 92
■Internal extension H2 .......................................................................... 93
External extensions (accessories) ......................................................... 94
■Extension AM1 ................................................................................... 94
■Extension EA1 .................................................................................... 95
Control functions .................................................................................... 96
■External heating program changeover ............................................... 96
■External blocking ................................................................................ 97
■External demand ................................................................................ 97
■Venting program ................................................................................. 98
■Fill program ......................................................................................... 98
■Screed drying ..................................................................................... 98
■Raising the reduced room temperature .............................................. 100
■Reducing the heat-up time ................................................................. 100
Allocating heating circuits to the remote control .................................... 101
Electronic combustion control unit ......................................................... 102
9. Designs Connection and wiring diagram – Internal connections ......................... 103
Connection and wiring diagram – External connections ........................ 104
10. Parts lists Ordering individual parts ........................................................................105
Overview of the assemblies ...................................................................105
Casing ....................................................................................................105
Heat cell .................................................................................................106
Burner .................................................................................................... 107
Hydraulics type B2HA ............................................................................108
■Aqua plate type B2HA ........................................................................ 109
Hydraulics type B2KA ............................................................................ 110
■Aqua plate type B2KA ........................................................................ 111
Control unit ............................................................................................ 112
Miscellaneous ........................................................................................ 113
Index
Index
5772 980 GB

6
11. Commissioning/service
reports
.................................................................................................................. 115
12. Specification .................................................................................................................. 116
13. Certificates Declaration of conformity ....................................................................... 118
Manufacturer's certificate according to the 1st BImSchV [Germany] .... 118
14. Keyword index .................................................................................................................. 119
Index
Index (cont.)
5772 980 GB

7
The appliance is only intended to be installed and
operated in sealed unvented heating systems that
comply with EN 12828, with due attention paid to the
associated installation, service and operating instruc-
tions. It is only designed for the heating of water that is
of potable water quality.
Intended usage presupposes that a fixed installation in
conjunction with permissible, system-specific compo-
nents has been carried out.
Commercial or industrial usage for a purpose other
than heating the building or DHW does not comply with
regulations.
Any usage beyond this must be approved by the man-
ufacturer for the individual case.
Incorrect usage or operation of the appliance (e.g. the
appliance being opened by the system user) is prohibi-
ted and results in an exclusion of liability. Incorrect
usage also occurs if the components in the heating
system are modified from their intended function (e.g.
if the flue gas and ventilation air paths are sealed).
Product information
Vitodens 200-W, type B2HA, B2KA
Preset for operation with natural gas E and
natural gas LL.
For conversion to LPG P (without conversion kit), see
"Commissioning, inspection, maintenance".
In principle the Vitodens 200-W may only be delivered
to countries listed on the type plate. For deliveries to
alternative countries, approved contractors must
arrange individual approval on their own initiative and
in accordance with the law of the country in question.
Preparing for installation
Intended use
5772 980 GB
Installation

8
!Please note
To prevent appliance damage,
connect all pipework free of load and torque
stress.
360
450
730
1925 H
850
100 215
50
a
A B C D EF K
G
Fig. 1
AHeating flow Rp¾
BDHW Rp½ (gas condensing combi boiler)
Cylinder flow G¾ (gas condensing boiler)
CGas connection
DCold water Rp½ (gas condensing combi boiler)
Cylinder return G¾ (gas condensing boiler)
EHeating return Rp¾
FFilling/draining
GWiring area
HDimension with DHW cylinder below
KCondensate drain
Rated heating output
kW
Dim. a
mm
3.2 - 19.0 136
6.5 - 26.0 158
8.8 - 35.0 158
Note
This boiler (IP rating: IP X4 D) is approved for installa-
tion in wet rooms inside safety zone 1 according to
DIN VDE 0100. Exposure to water jets must be pre-
vented.
Observe the requirements of DIN VDE 0100.
1. Fit the pre-plumbing jig or mounting frame provided
at the chosen installation site.
Pre-plumbing jig or mounting frame installa-
tion instructions
2. Prepare the connections on the water side for the
valves on the pre-plumbing jig or mounting frame.
Thoroughly flush the heating system.
3. Prepare the gas connection according to TRGI or
TRF [or local regulations].
Preparing for installation
Preparing for installation
5772 980 GB
Installation

9
4. Prepare the electrical connections. ■Power cable: NYM-J 3 x 1.5 mm2, max. fuse rat-
ing 16 A, 230 V, 50 Hz.
■Accessory cables: NYM with the required number
of cores for the external connections.
■All cables should protrude 1200 mm from the wall
near "G".
Cold water installation
Fig. 2
ACold water connection, boiler
BDrain outlet
CVisible discharge pipe outlet point
DSafety valve
ENon-return valve
FShut-off valve
GCold water
HSafety assembly
A safety assembly H to DIN 1988 and EN 806 is
required if the mains water supply pressure exceeds
10 bar (1.0 MPa), and no DHW pressure reducing
valve is installed (to DIN 4753).
Only use a non-return valve or a combined shut-off
and non-return valve in conjunction with a safety valve.
If the safety valve is used, the cold water shut-off valve
on the boiler must not be shut off.
Remove the toggle on the cold water shut-off valve (if
installed) to prevent it being shut off manually.
Shock arrestor
If draw-off points that could cause pressure peaks
(water hammer/shock) are connected to the same
pipework as the boiler (such as pressure washers,
washing machines or dishwashers), we would recom-
mend the installation of a shock arrestor near the
source of such pressure shocks.
g: Fit a small domestic expansion vessel if water
hammer occurs.
Preparing for installation
Preparing for installation (cont.)
5772 980 GB
Installation

10
2x
6.
7.
5.
3.
2x
2.
1.
4.
Fig. 3
Fitting the connections
A B C D E F
Fig. 4
AHeating flow
BDHW (gas condensing combi boiler)
Cylinder flow (gas condensing boiler)
CGas connection
DCold water (gas condensing combi boiler)
Cylinder return (gas condensing boiler)
EHeating return
FFilling/draining
Flue gas connection
Note
The labels "System certificate" and "Skoberne GmbH
flue system" enclosed with the technical documenta-
tion may only be used in conjunction with the
Viessmann flue system made by Skoberne.
Connecting the balanced flue
Flue system installation instructions
Installation sequence
Mounting the boiler and making connections
5772 980 GB
Installation

11
Do not carry out commissioning until the following
conditions are met:
■Free passage through the flue gas pipes.
■Flue system with positive pressure is gas-tight.
■Apertures for ensuring sufficient combustion air sup-
ply are open and cannot be closed off.
■Applicable regulations on installing and commission-
ing flue systems have been followed.
Danger
Leaking or blocked flue systems or an insuffi-
cient supply of combustion air cause life threat-
ening poisoning due to carbon monoxide in the
flue gas.
Ensure the flue system functions correctly. Aper-
tures for combustion air supply must not be able
to be closed off.
Condensate drain connection
Fig. 5
1. Pull the condensate hose far enough out of the
boiler so that no unnecessary bends are created
inside the boiler. Check the tightness of the siphon
connection.
2. Connect the condensate hose with a constant fall
and a pipe vent to the public sewage system or to a
neutralising system.
Gas connection
A
Fig. 6
Information on operation with LPG
Install an external safety solenoid valve if the boiler is
sited in rooms below ground level.
1. Seal gas shut-off valve A into the gas supply pipe.
2. Carry out a tightness test.
Note
Only use suitable and approved leak detection
agents (EN 14291) and devices for the tightness
test. Leak detection agents with unsuitable constitu-
ents (e.g. nitrites, sulphides) can cause material
damage.
Remove leak detection agent residues after testing.
!Please note
Excessive test pressure may damage the
boiler and the gas valve.
Max. test pressure 150 mbar (15 kPa).
Where higher pressure is required for tight-
ness tests, disconnect the boiler and the gas
valves from the gas supply pipe (undo the fit-
ting).
3. Vent the gas line.
Conversion to alternative gas types:
Service instructions
Installation sequence
Flue gas connection (cont.)
5772 980 GB
Installation

12
!Please note
Electronic assemblies can be damaged by elec-
trostatic discharge.
Prior to commencing any work, touch earthed
objects, such as heating or water pipes to dis-
charge static loads.
2x
4x
4.
3.
5.
2.
1.
Fig. 7
Installation sequence
Opening the control unit enclosure
5772 980 GB
Installation

13
L N
230V~ 230V~
596 40
40962035100
1LN
2 1
145
2
1
32 15 4 28
145
A
Fig. 8
AJumper
Connections on 230 V~ plug
fÖ Power supply
lH ■Power supply for accessories
■External demand/blocking
■Room temperature control unit (remove jumper
A when connecting):
–Vitotrol 100, UTA
–Vitotrol 100, UTDB
–Vitotrol 100, UTDB-RF
Connections to LV plug
X3 Plug X3 can be pulled to make assembly easier.
!Outside temperature sensor
?Flow temperature sensor for low loss header
(accessory)
Radio clock receiver
X4 KM BUS connection, heating circuit pump
%Type B2HA:
Cylinder temperature sensor (part of the DHW
cylinder connection set)
Type B2KA:
Comfort sensor (connected at the factory)
aVG KM BUS subscriber (accessory)
To connect several accessories, see page 16.
■Vitotrol 200A or 300A remote control
■Vitocom 100, type GSM
■Extension kit for one heating circuit with mixer
■Solar control module, type SM1
■Vitosolic
■Extension AM1
■Extension EA1
■Wireless base station
■KM BUS distributor
Information on connecting accessories
When connecting accessories observe the sep-
arate installation instructions provided with
them.
Installation sequence
Electrical terminals
5772 980 GB
Installation

14
Outside temperature sensor !
For fitting the wireless outside temperature sensor
(wireless accessory):
Wireless base station installation and service
instructions
Fitting location for outside temperature sensor
■North or north-western wall, 2 to 2.5 m above ground
level; in multi storey buildings, in the upper half of the
second floor
■Not above windows, doors or vents
■Not immediately below balconies or gutters
■Never render over
Outside temperature sensor connection
2-core lead, length max. 35 m with a cross-section of
1.5 mm2
External demand via switching contact
Connection options:
■Extension EA1 (accessory, see separate installation
instructions).
■Plug lH.
Burner operation is load-dependent if the contact is
closed. The boiler water is heated to the value set in
coding address "9b" in group "General"/1. The boiler
water temperature is limited by this set value and the
electronic maximum limit (coding address "06" in group
"Boiler"/2).
!Please note
'Live' contacts lead to short circuits or phase fail-
ure.
The external connection must be potential-free
and comply with the requirements of safety cate-
gory II.
Plug lH Extension EA1
A
lH
N
?
1L
AFloating contact (when connecting, remove jumper
across L and 1)
B
[{S
DE [{D DE
[{A
DE
A
AFloating contact
BExtension EA1
Codes
■"4b:1" in group "General"/1.
■Effect of the function on the relevant heating circuit
pump:
Coding address "d7" in group "Heating circuit" (only
with weather-compensated control units).
■Effect of the function on the circulation pump for cylin-
der heating (if installed):
Coding address "5F" in group "DHW"/3.
Codes
■Set "3A" (DE1), "3b" (DE2) or "3C" (DE3) in group
"General"/1 to 2.
■Effect of the function on the relevant heating circuit
pump:
Coding address "d7" in group "Heating circuit" (only
with weather-compensated control units).
■Effect of the function on the circulation pump for cylin-
der heating (if installed):
Coding address "5F" in group "DHW"/3.
External demand via 0 – 10 V input
Connection at 0 – 10 V input to extension EA1. Ensure DC separation between the earth conductor
and the negative pole of the on-site voltage source.
Installation sequence
Electrical terminals (cont.)
5772 980 GB
Installation

15
L?NL
?
N
fÖ
SP
aBJ
230 V~
Ö
[{{]
0-10V f-]
A
U0-10 V
+
+-
Fig. 9
0 – 1 V ≙ No default set boiler water temperature
1 V ≙ Set value 10 °C
10 V ≙ Set value 100 °C
External blocking via switching contact
Connection options:
■Plug lH.
■Extension EA1 (accessory, see separate installation
instructions).
The burner is switched off if this contact is closed. The
heating circuit pump and (if installed) the circulation
pump for cylinder heating are switched according to
the set code (see following table "Codes").
!Please note
'Live' contacts lead to short circuits or phase fail-
ure.
The external connection must be potential-free
and comply with the requirements of safety cate-
gory II.
Plug lH Extension EA1
A
lH
N
?
1L
AFloating contact (when connecting, remove jumper
across L and 1)
B
[{S
DE [{D DE
[{A
DE
A
AFloating contact
BExtension EA1
Codes
■"4b:2" in group "General"/1
■Effect of the function on the heating circuit pump:
Coding address "d6" in group "Heating circuit" (only
with weather-compensated control units).
■Effect of the function on the circulation pump for cylin-
der heating (if installed):
Coding address "5E" in group "DHW"/3.
Codes
■Set "3A" (DE1), "3b" (DE2) or "3C" (DE3) in group
"General"/1 to 3 or 4.
■Effect of the function on the heating circuit pump:
Coding address "d6" in group "Heating circuit" (only
with weather-compensated control units).
■Effect of the function on the circulation pump for cylin-
der heating (if installed):
Coding address "5E" in group "DHW"/3.
Installation sequence
Electrical terminals (cont.)
5772 980 GB
Installation

16
Power supply for accessories at plug lH (230 V~)
Where the boiler is installed in a wet area, the power
supply for accessories must not be connected at the
control unit. Subject to the boiler being sited outside
wet rooms, the power supply of accessory components
can be connected at the control unit. This connection
is switched directly with the ON/OFF switch of the con-
trol unit.
If the total system current exceeds 6 A, connect one or
more extensions via an ON/OFF switch directly to the
mains supply (see next chapter).
Connection of accessories
Power supply and KM BUS
Power supply to all accessories via heat source control unit
145 145 40 A 40 145 145 40 A 40
B C
145 40 96
A
145 145 40 A 40
D
E
Fig. 10
Some accessories with direct power supply
145 145 40 A 40 145 145 40 A 40
B C
145 40 96
A
145 145 40 A 40
D
E
Fig. 11
AHeat source control unit
BExtension kit for heating circuit with mixer M2
CExtension kit for heating circuit with mixer M3
DExtension AM1, EA1 and/or solar control module,
type SM1
EON/OFF switch
A buffer relay must be fitted if the current flowing to the
connected working parts (e.g. circulation pumps) is
higher than the safety level of the relevant accessory.
Accessories Internal fuse protec-
tion
Extension kit for heating circuit
with mixer
2 A
Extension AM1 4 A
Extension EA1 2 A
Solar control module, type
SM1
2 A
Installation sequence
Electrical terminals (cont.)
5772 980 GB
Installation

17
Power supply fÖ
Danger
Incorrectly executed electrical installations can
result in injuries from electrical current and in
appliance damage.
Connect the power supply and implement all
safety measures (e.g. RCD circuit) in accord-
ance with the following regulations:
■IEC 60364-4-41
■VDE regulations
■Connection requirements specified by your
local power supply utility
■Remove any existing individual cores.
■Install an isolator in the power cable which simulta-
neously isolates all non-earthed conductors from the
mains with contact separation of at least 3 mm.
We additionally recommend installing an AC/DC-
sensitive RCD (RCD class B ) for DC (fault)
currents that can occur with energy efficient equip-
ment.
■Max. fuse rating 16 A.
Danger
The absence of component earthing can lead to
serious injury from electric current if an electrical
fault occurs.
Connect the appliance and pipework to the equi-
potential bonding of the building in question.
Routing connecting cables
!Please note
If connecting cables touch hot components they
will be damaged.
When routing and securing cables/leads on site,
ensure that the maximum permissible tempera-
tures for these cables/leads are not exceeded.
5
A
C
E
D
B
F
Fig. 12
ALV terminals
B230 V terminals
CInternal extension
DMain PCB
ECommunication module
Installation sequence
Electrical terminals (cont.)
5772 980 GB
Installation

18
FCable grommet for power cable
Remove the existing cable grommet when using
cables with a larger cross-section (up to
7 14 mm). Secure the cable with fitted cable
grommet F (white).
%Type B2HA:
Plugs for connecting the cylinder temperature sen-
sor to the cable harness
Type B2KA:
Plug for comfort sensor (connected at the factory)
Closing the control unit enclosure and inserting the programming unit
5.
4.
2.
6.
2x
3.
1.
Fig. 13
Insert programming unit (packed separately) into the
control unit support.
Note
The programming unit can also be inserted into a wall
mounting base (accessory) near the boiler.
Wall mounting base installation instructions
Installation sequence
Electrical terminals (cont.)
5772 980 GB
Installation

19
2x
1.
2.
3.
Fig. 14
Note
Always fit the contact guard and locking screws before
starting the appliance.
Installation sequence
Fitting the front panel
5772 980 GB
Installation

20
Commissioning steps
Inspection steps
Maintenance steps Page
•1. Checking the power supply
•2. Filling the heating system................................................................................................. 21
•3. Switching on the power supply and the ON/OFF switch
•4. Selecting the language - only for weather-compensated control units........................ 22
• • 5. Setting the time and date - only for weather-compensated control units.................... 22
•6. Venting the boiler............................................................................................................... 23
•7. Venting the heating system............................................................................................... 23
•8. Filling the siphon with water............................................................................................. 24
••• 9. Checking all connections on the heating water side and DHW side for leaks
•10. Designating heating circuits - only for weather-compensated control units............... 24
• • 11. Checking the gas type....................................................................................................... 25
•12. Gas type conversion (only for operation with LPG)....................................................... 25
••• 13. Checking the static and supply pressure........................................................................ 25
•14. Function sequence and possible faults........................................................................... 26
•15. Setting max. heating output.............................................................................................. 27
•16. Tightness test, balanced flue system (annular gap check)............................................ 28
• • 17. Burner removal .................................................................................................................. 29
• • 18. Checking the burner gasket and burner gauze assembly.............................................. 30
• • 19. Checking and adjusting the ignition and ionisation electrodes.................................... 31
•20. Cleaning the heat exchanger............................................................................................ 31
• • 21. Checking the condensate drain and cleaning the siphon.............................................. 31
• • 22. Installing the burner........................................................................................................... 32
• • 23. Checking the neutralising system (if installed)
•24. Checking the flow limiter (only for gas condensing combi boilers)............................. 33
••• 25. Checking the expansion vessel and system pressure................................................... 33
••• 26. Checking the function of safety valves
••• 27. Checking electrical terminals for tightness
••• 28. Checking all gas equipment for tightness at operating pressure................................. 34
• • 29. Checking the combustion quality..................................................................................... 34
••• 30. Checking the flue system for unrestricted flow and tightness
••• 31. Checking the external LPG safety valve (if installed)
•32. Matching the control unit to the heating system............................................................ 35
•33. Adjusting the heating curves (only for weather-compensated control units).............. 39
•34. Connecting the control unit to the LON system – only for weather-compensated
control units........................................................................................................................ 40
•35. Calling up and resetting service message....................................................................... 42
•36. Instructing system users................................................................................................... 42
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance
5772 980 GB