Viessmann Vitodens 200-W B2HE Quick guide

Installation and service instructions
for contractors
VIESMANN
Vitodens 200-W
Type B2HE, B2KE, 1.9 to 32 kW
Wall mounted gas condensing boiler
Natural gas and LPG version
VITODENS 200-W
6131235 GB 6/2019 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 may only be carried out by
a registered gas fitter.
■Work on electrical equipment may 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 to be observed
■National installation regulations
■Statutory regulations for the prevention of accidents
■Statutory regulations for environmental protection
■Codes of practice of the relevant trade associations
■Relevant country-specific safety regulations
Safety instructions for working on the system
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.
■Wear suitable personal protective equipment when
carrying out any work.
Danger
Hot surfaces and fluids can lead to burns or
scalding.
■Before maintenance and service work, switch
OFF the appliance and let it cool down.
■Never touch hot surfaces on the boiler, burner,
flue system or pipework.
!Please note
Electronic assemblies can be damaged by elec-
trostatic discharge.
Prior to commencing 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 the
system.
Replace faulty components only 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
6131235

3
Safety instructions for operating the system
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. Never 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.
■Have the power supply to the building shut off
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 doors to living spaces to prevent flue
gases from spreading.
What to do if water escapes from the appliance
Danger
If water escapes from the appliance there is a
risk of electrocution.
Switch OFF the heating system at the external
isolator (e.g. fuse box, domestic distribution
board).
Danger
If water escapes from the appliance there is a
risk of scalding.
Never touch hot heating water.
Condensate
Danger
Contact with condensate can be harmful to
health.
Never let condensate touch your skin or eyes
and do not swallow it.
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 external causes.
Ensure an adequate supply of combustion air.
Inform system users that subsequent modifications to
the building characteristics are not permissible (e.g.
cable/pipework routing, cladding or partitions).
Danger
Leaking or blocked flue systems, or an inade-
quate supply of combustion air can cause life
threatening poisoning from carbon monoxide in
the flue gas.
Ensure the flue system is in good working order.
Vents for supplying combustion air must be non-
sealable.
Extractors
Operating appliances that exhaust air to the outside
(extractor hoods, extractors, air conditioning units, etc.)
can create negative pressure. If the boiler is operated
at the same time, this can lead to a reverse flow of flue
gas.
Danger
The simultaneous operation of the boiler and
appliances that exhausts air to the outside can
result in life threatening poisoning due to a
reverse flow of flue gas.
Fit an interlock circuit or take suitable steps to
ensure an adequate supply of combustion air.
Safety instructions
Safety instructions (cont.)
6131235

4
1. Information Disposal of packaging ............................................................................ 6
Symbols ................................................................................................. 6
Intended use .......................................................................................... 6
Product information ................................................................................ 7
■Vitodens 200-W, type B2HE, B2KE .................................................... 7
System examples .................................................................................. 7
Spare parts lists ..................................................................................... 7
2. Preparing for installation ................................................................................................................ 8
3. Installation sequence Mounting the boiler and making connections ........................................ 11
■Removing the front panel ................................................................... 11
■Mounting the boiler on the pre-plumbing jig or mounting frame ......... 11
■Fitting the boiler to the wall mounting bracket .................................... 13
■Fitting the programming unit mounting bracket on the top of the
boiler ................................................................................................... 15
■Connections on the heating water and DHW sides ............................ 16
Condensate connection ......................................................................... 17
■Filling the trap with water .................................................................... 17
Flue gas connection ............................................................................... 17
Gas connection ...................................................................................... 19
Electrical connections ............................................................................ 20
■Opening the wiring chamber ............................................................... 20
■Layout of the electrical connections ................................................... 21
■On-site connections on HMU heat management unit ......................... 22
■Outside temperature sensor ! .......................................................... 22
■Connecting the cylinder temperature sensor ...................................... 23
■Connecting the circulation pump to P1 and P2 .................................. 23
■Floating switching contact connection ................................................ 23
■Information on connecting PlusBus subscribers ................................. 24
■Checking the CAN bus terminator switch setting ............................... 24
■Power supply for accessories at plug lH/aBH (230 V ~) ..................... 24
■Power supply fÖ ................................................................................. 26
■Routing connecting cables/leads ........................................................ 26
WiFi operational reliability and system requirements ............................ 27
■Wireless signal range of WiFi connection ........................................... 28
■Angle of penetration ........................................................................... 28
Closing the wiring chamber ................................................................... 29
Fitting the programming unit and front panel ......................................... 30
■Programming unit located at the bottom ............................................. 30
■Programming unit located at the top ................................................... 31
4. Commissioning, inspec-
tion, maintenance
Steps - commissioning, inspection and maintenance ............................ 32
5. System configuration
(parameters)
Calling up parameters ............................................................................ 59
General .................................................................................................. 59
Boiler ...................................................................................................... 61
DHW (domestic hot water) ..................................................................... 63
Heating circuit 1, Heating circuit 2, Heating circuit 3 ............................. 65
Solar ...................................................................................................... 70
Subscriber numbers of connected extensions ....................................... 72
6. Diagnosis and service
checks
Service menu ......................................................................................... 74
■Calling up the service menu ............................................................... 74
■Exiting the service menu .................................................................... 74
Diagnosis ............................................................................................... 74
■Checking operating data ..................................................................... 74
Checking outputs (actuator test) ............................................................ 75
Index
Index
6131235

5
7. Troubleshooting Fault display on the programming unit ................................................... 77
■Fault display on the programming unit ............................................... 77
Overview of electronics module ............................................................. 79
Fault messages ..................................................................................... 79
Repairs .................................................................................................. 97
■Shutting down the boiler ..................................................................... 97
■Removing the boiler from the pre-plumbing jig or mounting frame ..... 98
■Checking the temperature sensors ..................................................... 99
■Information on replacing the HMU heat management unit and BCU
burner control unit ...............................................................................102
■Replacing the power cable ................................................................. 102
■Replacing the HMI connecting cable .................................................. 102
■Checking the plate heat exchanger .................................................... 103
■Removing the hydraulic unit ............................................................... 104
■Checking the fuse ...............................................................................106
8. Function description Appliance functions ................................................................................107
■Heating mode ..................................................................................... 107
■Venting program ................................................................................. 107
■Filling program .................................................................................... 107
■Heating curve ..................................................................................... 107
■Screed drying ..................................................................................... 109
■Raising the reduced room temperature .............................................. 111
DHW heating ......................................................................................... 113
■Increased DHW hygiene ..................................................................... 113
9. Connection and wiring dia-
gram
HMU heat management unit .................................................................. 114
BCU burner control unit ......................................................................... 116
10. Commissioning/service
reports
................................................................................................................ 117
11. Specification Specification .......................................................................................... 118
Electronic combustion control unit ......................................................... 122
12. Disposal Final decommissioning and disposal ..................................................... 123
13. Certificates Declaration of conformity ....................................................................... 124
Manufacturer's certificate according to the 1st BImSchV [Germany] .... 124
14. Keyword index ................................................................................................................125
Index
Index (cont.)
6131235

6
Please dispose of packaging waste in line with statu-
tory regulations.
Symbols
Symbol Meaning
Reference to other document containing
further information
1.
Step in a diagram:
The numbers correspond to the order in
which the steps are carried out.
Warning of material losses and environ-
mental pollution
Live electrical area
Pay particular attention.
■Component must audibly click into place.
or
■Acoustic signal
■Fit new component.
or
■In conjunction with a tool: Clean the sur-
face.
Dispose of component correctly.
Dispose of component at a suitable collec-
tion point. Do not dispose of component in
domestic waste.
The steps in connection with commissioning, inspec-
tion and maintenance are found in the "Commission-
ing, inspection and maintenance" section and identified
as follows:
Symbol Meaning
Steps required during commissioning
Not required during commissioning
Steps required during inspection
Not required during inspection
Steps required during maintenance
Not required during maintenance
Intended use
The appliance is intended solely for installation and
operation 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 heating up heating water
that is of potable water quality.
Intended use 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 shall be deemed
inappropriate.
Any usage beyond this must be approved by the man-
ufacturer in each individual case.
Information
Disposal of packaging
6131235
Information

7
Incorrect usage or operation of the appliance (e.g. the
appliance being opened by the system user) is prohibi-
ted and will result in an exclusion of liability. Incorrect
usage also occurs if the components in the heating
system are modified from their intended use (e.g. if the
flue gas and ventilation air paths are sealed).
Product information
Vitodens 200-W, type B2HE, B2KE
Wall mounted gas condensing boiler with Inox-Radial
heat exchanger and the following integrated compo-
nents:
■Modulating MatriX Plus burner for natural gas and
LPG
■Hydraulics with 3-way diverter valve and variable
speed high efficiency circulation pump
■Type B2KE: Plate heat exchanger for DHW heating
■Weather-compensated or constant temperature con-
trol unit
■Integral diaphragm expansion vessel (10 l capacity)
The selected gas category in the delivered condition
and the associated nominal gas pressure are given on
the boiler type plate. The type plate also shows the
other gas types and pressures with which the boiler
can be operated. A conversion within the stated natu-
ral gas groups is not required. For switching to LPG or
natural gas M (without conversion kit), see "Commis-
sioning, inspection and maintenance".
Type plate
A
Fig. 1
AType plate
The Vitodens 200-W may only be delivered to coun-
tries listed on the type plate. For deliveries to other
countries, approved contractors must arrange individ-
ual approval on their own initiative and in accordance
with the law of the country in question.
System examples
System examples with hydraulic and electrical connec-
tion diagrams and function descriptions are available
to help setting up the heating system.
Detailed information on system examples can be found
at: www.viessmann-schemes.com
Spare parts lists
Information about spare parts can be found on the
Viessmann spare parts app.
Information
Intended use (cont.)
6131235
Information

8
350
450
Ø 60.5
Ø 96 -0.5
+0.8
141
369
700
767
58
58
123 123
186
A
B C D E
G F
1925
132
360
H
161
50
125
Fig. 2 Illustration shows a gas condensing combi
boiler
ACondensate drain
BHeating flow
CDHW (gas condensing combi boiler)
Cylinder flow (gas condensing system boiler)
DGas connection
ECold water (gas condensing combi boiler)
Cylinder return (gas condensing combi boiler)
FHeating return
GFilling/draining
HDimension for installation with DHW cylinder below
the boiler
Preparing for installation
Preparing for installation
6131235
Installation

9
Note
This boiler (IP rating: IP X4) is approved for installation
in wet rooms inside safety zone 1, to DIN VDE 0100.
Exposure to jets of water must be prevented.
For open flue operation, the boiler may only be oper-
ated with a splash cover.
Observe the requirements of DIN VDE 0100.
1. Subject to order: Fit supplied pre-plumbing jig,
mounting frame or wall mounting bracket in the rel-
evant installation location.
Installation instructions for pre-plumbing jig
or mounting frame
Note
Check the condition of the wall where the boiler is
to be installed. For the suitability of the supplied
rawl plugs for various building materials, see man-
ufacturer's instructions: Fischer Spreizdübel SX 10
x 80
For other construction materials, use fixing materi-
als with sufficient load bearing capacity.
2. Prepare the water connections to the valves/fittings
of the mounting bracket.
Thoroughly flush the heating system.
!Please note
To prevent appliance damage,
connect all pipework free of load and torque
stress.
Note
To prevent dirt from entering the connections: Do
not remove the protective caps until you are about
to fit the boiler.
Note
If an on-site expansion vessel also has to be instal-
led: Install this expansion vessel in the cylinder
return, as the 3-way diverter valve is located in the
heating flow.
3. Prepare the gas connection according to TRGI or
TRF [or local regulations].
4. Prepare the electrical connections.
■The appliance is delivered fitted with a power
cable (approx. 2 m long).
Note
Connect the power cable to the electricity supply
using a fixed connection.
■Power supply: 230 V, 50 Hz, fuse rating
max. 16 A
■Accessory cables: 0.75 mm2 flexible PVC cable
with required number of cores for external con-
nections.
Preparing for installation
Preparing for installation (cont.)
6131235
Installation

10
Connection on the DHW side for gas condensing combi boiler
Cold water installation
Fig. 3
ACold water connection of boiler
BDrain outlet
CVisible discharge pipe outlet point
DSafety valve
ENon-return valve
FShut-off valve
GCold water
HSafety assembly
Safety assembly H to DIN 1988 and EN 806 is
required if it is possible that the mains water supply
pressure will exceed 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 manual shut-off.
Shock arrestor
If draw-off points likely to cause water hammer are
connected to the boiler's DHW network (e.g. flush
valves, washing machines, dishwashers): Shock
arrestors should be installed close to the cause of the
water hammer.
Preparing for installation
Preparing for installation (cont.)
6131235
Installation

11
Removing the front panel
1.
2x
3.
2.
Fig. 4
1. Unlock the front panel on the underside (push in),
using a screwdriver or similar tool.
2. Swivel the front panel forwards slightly and lift
away upwards.
Note
Do not remove protective caps from connections
on the heating water side and from the gas con-
nection until you are about to commence installa-
tion.
Mounting the boiler on the pre-plumbing jig or mounting frame
Note
Various installation components can be found in a sep-
arate pack. Keep the installation components safe, as
they will be required for later installation.
Installation sequence
Mounting the boiler and making connections
6131235
Installation

12
3.
1.
2.
4.
37 37
5.
6.
4x
4x
Fig. 5
Note
The diagram shows installation on a pre-plumbing jig
for a gas condensing combi boiler.
The boiler can be installed on the following accesso-
ries:
■Pre-plumbing jig
■Pre-plumbing jig for sub-mounting kit
■Mounting frame
■Self-supporting mounting frame
1. Pull off the protective caps.
2. Replace gaskets.
Internal gasket diameter:
■Gas connection Ø 18.5 mm
■Connections on the heating water side Ø 17.0
mm
Note
Gasket for gas connection is attached to the gas
shut-off valve.
3. Suspend the Vitodens from the wall mounting
bracket.
Note
After mounting, ensure correct seating.
Installation sequence
Mounting the boiler and making connections (cont.)
6131235
Installation

13
4. Note
Only remove the clip under the gas pipe union nut
once the appliance has been installed. Clip is no
longer required.
5. Tighten union nuts so that they form a tight seal.
Torque settings:
■Union nuts G ¾: 30 Nm
■Union nuts G ½: 24 Nm
When carrying out any work on gas connection fit-
tings, counterhold with a suitable tool. Never trans-
fer any forces to the internal components.
6. 6. Tighten locking ring fittings so that they form a
tight seal.
One turn beyond finger-tight.
Fitting the boiler to the wall mounting bracket
Note
Various installation components can be found in a sep-
arate pack. Keep the installation components safe, as
they will be required for later installation.
Installation sequence
Mounting the boiler and making connections (cont.)
6131235
Installation

14
3.
1.
2.
5.
4.
37 37
Fig. 6
1. Pull off the protective caps.
2. Replace gaskets. Fit valves and gas shut-off valve.
Internal gasket diameter:
■Gas connection Ø 18.5 mm
■Connections on the heating water side
Ø 17.0 mm
Note
Gasket for gas connection is attached to the gas
shut-off valve.
3. Suspend the Vitodens from the wall mounting
bracket.
4. Note
Only remove the clip under the gas pipe union nut
once the appliance has been installed. Clip is no
longer required.
5. Torque settings:
■Union nuts G ¾: 30 Nm
■Union nuts G ½: 24 Nm
When carrying out any work on gas connection fit-
tings, counterhold with a suitable tool. Never trans-
fer any forces to the internal components.
Installation sequence
Mounting the boiler and making connections (cont.)
6131235
Installation

15
Fitting the programming unit mounting bracket on the top of the boiler
In the delivered condition, the programming unit is
located on the underside of the boiler. If required for
ease of operation, the programming unit can be loca-
ted on the top of the boiler. To do so, reposition the
bracket at the top.
2x
2.
3.
8.
180°
4.
5.
6.
!
7.
1.
Fig. 7
Installation sequence
Mounting the boiler and making connections (cont.)
6131235
Installation

16
1. Remove the hinges and store them in case they
need to be reinstalled at a later date.
4. Pull the plug of the connecting cable from the
bracket.
!Please note
Incorrect routing of the cable can lead to
heat damage and impairment of the EMC
properties.
Do not change the position of the cable or its
fixture (fixing point on casing).
6. Turn the bracket over and insert the plug on the
right-hand side again.
Connections on the heating water and DHW sides
If the connections have not been fitted previously,
make the connections on the heating water and DHW
sides.
Gas condensing system boiler
A B C D E F
Fig. 8 Specifications for threads in conjunction with
connection accessories
AHeating flow R ¾ (male thread)
BCylinder flow G ¾
CGas connection R ¾
DCylinder return G ¾
EHeating return R ¾ (male thread)
FFilling/draining
Note
Intermediate pieces on the cylinder flow and return are
parts of the connection set for the DHW cylinder.
If no DHW cylinder is being connected, seal off the
connections with caps.
Gas condensing combi boiler
FA B C D E
Fig. 9 Specifications for threads in conjunction with
connection accessories
AHeating flow R ¾ (male thread)
BDHW G ½
CGas connection R ¾
DCold water G ½
EHeating return R ¾ (male thread)
FFilling/draining
Scald protection
DHW temperatures of over 60 °C can occur with gas
condensing combi boilers. As a result, scald protection
should be installed on site in the DHW pipe.
Installation sequence
Mounting the boiler and making connections (cont.)
6131235
Installation

17
Fig. 10
1. Push the supplied drain hose on to the drain con-
nector.
2. Connect the drain hose with a constant fall and a
pipe vent to the public sewage system or to a neu-
tralising system.
Note
Route the onward drain line inside the building as
far as possible.
If the onward drain line is routed outside the build-
ing:
■Use a min. Ø 30 mm line.
■Protect the line from frost.
■Keep the line as short as possible.
!Please note
The drain hose is used to route away any
hot water discharged from the safety valve.
Lay and secure the drain hose in a way that
prevents any risk of scalding.
Note
Observe local waste water regulations.
Filling the trap with water
Fig. 11
Pour at least 0.3 l of water into the flue gas connection.
!Please note
During commissioning, flue gas may escape
from the condensate drain.
Always fill the trap with water before commis-
sioning.
Note
If there is a risk of frost, only fill the trap just before
commissioning.
Flue gas connection
Note
The "System certification" and "Skoberne GmbH flue
system" labels enclosed with the technical documenta-
tion may only be used in conjunction with the
Viessmann flue system made by Skoberne.
Connecting the balanced flue pipe
Flue system installation instructions
Installation sequence
Condensate connection
6131235
Installation

18
Connecting several Vitodens to a shared flue sys-
tem
If connecting several Vitodens to a shared flue system,
install a back draught safety device in each boiler.
■Multiple vertical connections:
Back draught safety device available as an acces-
sory
■Flue gas cascade:
Back draught safety device in standard delivery of
flue gas cascade (accessories)
Installing the back draught safety device:
Installation instructions for back draught safety
device
Converting the control unit for use with a shared flue
system:
■In the commissioning assistant, select the "Multiple
connections" setting under "Flue system type".
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.
■Inspection port covers checked for secure and tight
seating.
■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.
Prevent condensate drainage via a wind protec-
tor.
Installation sequence
Flue gas connection (cont.)
6131235
Installation

19
A
Fig. 12
1. If the gas connection has not been fitted previ-
ously, seal gas shut-off valve A to the gas con-
nection.
When carrying out any work on gas connection fit-
tings, counterhold with a suitable tool. Never trans-
fer any forces to the internal components.
Information on operation with LPG
Install an external safety solenoid valve if the boiler
is installed below ground level.
An EM-EA1 extension (accessories) is required to
connect the safety solenoid valve.
2. Check for leaks.
Danger
Escaping gas leads to a risk of explosion.
Check all connections on the gas side (also
inside the appliance) for tightness.
Note
Only use suitable and approved leak detection
agents (EN 14291) and devices for the tightness
test. Leak detection agents with unsuitable constit-
uents (e.g. nitrides, sulphides) can cause material
damage.
Remove residues of the leak detection agent after
testing.
!Please note
Excessive test pressure will damage the
boiler and the gas train.
Max. test pressure 150 mbar (15 kPa).
Where higher pressure is required for tight-
ness tests, disconnect the boiler and the gas
train from the main supply pipe (undo the fit-
ting).
3. Purge the gas line.
Installation sequence
Gas connection
6131235
Installation

20
Opening the wiring chamber
Note
If only PlusBus, the outside temperature sensor and
the cylinder temperature sensor are connected to the
heat generator, the wiring chamber does not need to
be opened.
5. 2x
6.
4.
1.
3.
2.
Fig. 13
Note
Steps 1 to 3 are required only if the programming unit
is located at the bottom.
Do not disconnect the plug from the mounting panel.
Do not change the position of the cable or its fixture
(fixing point on casing).
!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.
Installation sequence
Electrical connections
6131235
Installation