Viessmann Vitodens 111-W Quick guide

Installation and service instructions
for contractors
VIESMANN
Vitodens 111-W
Type B1LF, 3.2 to 32 kW
Type B1LF-M (for multiple connection), 5.7 to 32 kW
Wall mounted gas condensing boiler
Natural gas and LPG version
Gas Council No.: 47-819-53, 47-819-54
VITODENS 111-W
6167585 GB 3/2023 Please keep safe.

2
Please follow these safety instruc-
tions 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 environmen-
tal pollution.
Note
Details identified by the word "Note"
contain additional information.
Target group
These instructions are exclusively inten-
ded for qualified 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 per-
son 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 regu-
lations
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 safe-
guard it against unintentional reopen-
ing.
■Isolate the system from the power sup-
ply, 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 recon-
nection.
■Wear suitable personal protective
equipment when carrying out any work.
Safety instructions
Safety instructions
6167585

3
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 pipe-
work.
!Please note
Electronic assemblies can be dam-
aged by electrostatic discharge.
Prior to commencing work, touch
earthed objects such as heating or
water pipes to discharge static
loads.
Repair work
!Please note
Repairing components that fulfil a
safety function 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 tested together with the
system can compromise its func-
tion. Installing non-authorised com-
ponents and making non-approved
modifications or conversions can
compromise safety and may invalid-
ate our warranty.
For replacements, use only original
spare parts supplied or approved by
Viessmann.
Safety instructions
Safety instructions (cont.)
6167585

4
Safety instructions for operating the system
If you smell gas
Danger
Escaping gas can lead to explo-
sions which may result in serious
injury.
■Do not smoke. Prevent naked
flames and sparks. Never switch
lights or electrical appliances on
or off.
■Close the gas shut-off valve.
■Open windows and doors.
■Evacuate any people from the
danger zone.
■Notify your gas or electricity sup-
ply 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 spread-
ing.
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 condensate or other
external causes.
Ensure an adequate supply of combus-
tion air.
Inform system users that subsequent
modifications to the building characteris-
tics are not permissible (e.g. cable/pipe-
work routing, cladding or partitions).
Danger
Leaking or blocked flue systems, or
an inadequate supply of combus-
tion 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-seala-
ble.
Extractors
Operating appliances that extract air to
the outside (extractor hoods, extractors,
air conditioning units, central vacuum
cleaning systems, etc.) can create nega-
tive pressure. If the boiler is operated at
the same time, this can lead to a reverse
flow of flue gas.
Safety instructions
Safety instructions (cont.)
6167585

5
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 suita-
ble steps to ensure an adequate
supply of combustion air.
Safety instructions
Safety instructions (cont.)
6167585

6
1. Information Disposal of packaging ............................................................................ 8
Gas Council No. ..................................................................................... 8
Symbols ................................................................................................. 8
Intended use .......................................................................................... 9
Product information ................................................................................ 9
■Vitodens 111-W, type B1LF ................................................................ 9
System examples .................................................................................. 9
Maintenance parts and spare parts ....................................................... 9
■Viessmann Partnershop ..................................................................... 10
■Viessmann spare part app .................................................................. 10
2. Preparing for installation ................................................................................................................ 11
3. Installation sequence Removing the boiler from the packaging ............................................... 13
Mounting the boiler and making connections ........................................ 13
■Mounting the boiler on the pre-plumbing jig or mounting frame ......... 13
■Fitting the boiler to the wall mounting bracket .................................... 16
■Removing the front panel ................................................................... 18
■Type plate ........................................................................................... 18
■Connecting on the heating water and DHW sides .............................. 19
Connecting the condensate drain .......................................................... 19
■Filling the trap with water .................................................................... 20
Connecting the balanced flue pipe ........................................................ 20
Connecting the gas line ......................................................................... 22
■Gas installation to BS 6891:2005 ....................................................... 23
Electrical connections ............................................................................ 23
■Opening the wiring chamber ............................................................... 23
■Layout of the electrical connections ................................................... 24
■On-site connections on the HMBU heat management unit ................ 26
■Connecting the outside temperature sensor ....................................... 26
■Connecting the floating switching contact .......................................... 26
■Power supply fÖ ................................................................................. 28
■Routing connecting cables/leads ........................................................ 29
WiFi operational reliability and system requirements ............................ 29
■Wireless signal range of WiFi connection ........................................... 30
■Angle of penetration ........................................................................... 30
Closing the wiring chamber and fitting the front panel ........................... 31
4. Commissioning, inspec-
tion, maintenance
Steps - commissioning, inspection and maintenance ............................ 32
5. System configuration
(parameters)
Calling up parameters ............................................................................ 60
Parameter .............................................................................................. 60
■Further settings ................................................................................... 63
Subscriber numbers of connected extensions ....................................... 64
6. Diagnosis and service
checks
Service menu ......................................................................................... 66
■Calling up the service menu ............................................................... 66
■Exiting the service menu .................................................................... 66
Diagnosis ............................................................................................... 67
■Checking operating data ..................................................................... 67
■Calling up operating data .................................................................... 67
■b.7: Configuring the maintenance interval .......................................... 67
■b.8: Resetting the maintenance interval ............................................. 67
7. Troubleshooting Fault display on the programming unit ................................................... 68
Overview of electronics modules ........................................................... 69
Resetting the burner .......................................................................... 69
Fault messages ..................................................................................... 70
Repairs .................................................................................................. 92
Index
Index
6167585

7
■Draining the boiler on the heating water side ..................................... 92
■Draining the boiler on the DHW side .................................................. 93
■Removing the boiler from the pre-plumbing jig or mounting frame ..... 94
■Status/checking/diagnosing the internal circulation pump .................. 94
■Checking the temperature sensors ..................................................... 96
■Replacing the HBMU heat management unit ..................................... 98
■Replacing the power cable ................................................................. 98
■Replacing the HMI connecting cable .................................................. 99
■Checking the plate heat exchanger .................................................... 99
■Removing the hydraulic unit ............................................................... 100
■Checking the fuse ...............................................................................101
8. Function description Appliance functions ................................................................................102
■Heating mode ..................................................................................... 102
■Venting program ................................................................................. 102
■Filling program .................................................................................... 102
■Heating curve ..................................................................................... 102
■Screed drying ..................................................................................... 104
DHW heating ......................................................................................... 106
■Heating the DHW loading cylinder from cold ...................................... 106
■Reheating when DHW is drawn off .....................................................106
External heating circuit hook-up (if installed) ......................................... 106
9. Connection and wiring dia-
gram
HBMU heat management unit ............................................................... 107
10. Reports ................................................................................................................ 111
11. Specification ................................................................................................................ 112
12. Disposal Final decommissioning and disposal ..................................................... 117
13. Ordering individual parts Ordering individual parts for accessories ...............................................118
14. Certificates Declaration of conformity ....................................................................... 119
Manufacturer's certificate according to the 1st BImSchV [Germany] .... 119
15. Keyword index ................................................................................................................120
Index
Index (cont.)
6167585

8
Please dispose of packaging waste in line with statu-
tory regulations.
Gas Council No.
Type Gas Council Number:
Vitodens 111-W, B1LF, 25 kW storage combi 47-819-53
Vitodens 111-W, B1LF, 32 kW storage combi 47-819-54
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
Information
Disposal of packaging
6167585
Information

9
The appliance is intended solely for installation and
operation in sealed unvented heating systems that
comply with EN 12828, with due attention paid to
CECS215-2017 and the associated installation, serv-
ice and operating instructions. It is only designed for
heating up heating water that is of potable water qual-
ity.
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.
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 111-W, type B1LF
Gas condensing storage combi boiler with Inox-Radial
heat exchanger and the following integrated compo-
nents:
■Modulating MatriX-Plus burner for natural gas and
LPG
■Stainless steel loading cylinder, 46 l capacity
■Hydraulics with 3-way diverter valve and variable
speed high efficiency circulation pump
■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 conversion to LPG
(without conversion kit), see "Commissioning, inspec-
tion and maintenance".
The Vitodens 111-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 regarding system examples:
www.viessmann-schemes.com
Maintenance parts and spare parts
Maintenance parts and spare parts can be identified and ordered directly online.
Information
Intended use
6167585
Information

10
Viessmann Partnershop
Login:
https://shop.viessmann.com/
Viessmann spare part app
www.viessmann.com/etapp
Information
Maintenance parts and spare parts (cont.)
6167585
Information

11
494.5
950
Ø 60.5
+0.8
Ø 96-0.5
B
C
EF G HDA
38.5
149.5
507.5
600
108
128.5
120 80 100
Fig. 1
AHeating flow
BHeating return
CFilling/draining
DCondensate drain
EGas connection
FSafety valve
GCold water
HDHW
Note
The boiler (IP rating IP X1) is approved for installation
in wet rooms in safety zone 3. Exposure to water jets
and spray 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.
Preparing for installation
Preparing for installation
6167585
Installation

12
Installation
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 so that it is free of load
and torque stress.
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.
Not possible with type B1KF
Note
An additional ball valve can be fitted in the DHW
pipe when installing a combi boiler in a basement
to facilitate maintenance work.
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
Connection on the DHW side
Cold water installation
Fig. 2
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 is included in the standard
delivery and requires installing.
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.
Preparing for installation
Preparing for installation (cont.)
6167585
Installation

13
2.
1.
Fig. 3
Mounting the boiler and making connections
Mounting the boiler on the pre-plumbing jig or mounting frame
Note
Various installation components can be found in a sep-
arate pack on the front panel. Keep the installation
components safe, as they will be required for later
installation.
Installation sequence
Removing the boiler from the packaging
6167585
Installation

14
2.
1.
4.
3.
Fig. 4
Note
The diagram shows installation on a pre-plumbing jig.
The boiler can be installed on the following accesso-
ries:
■Pre-plumbing jig
■Pre-plumbing jig for sub-mounting kit
■Mounting frame
1. 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.
2. After mounting, check for correct positioning.
Installation sequence
Mounting the boiler and making connections (cont.)
6167585
Installation

15
3. Note
Only remove the locking clip under the gas pipe
union nut once the appliance has been installed.
Locking clip is no longer required.
4. Tighten union nuts so that they form a tight seal.
Tighten the union nuts as tightly as necessary and
ensure that the components are undamaged and
are functioning correctly throughout service life.
Observe torque settings if a torque wrench is avail-
able.
Check for gas tightness to BSI 6891.
Torque for union nuts
■G ½: 24 Nm
■G ¾: 30 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.)
6167585
Installation

16
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.
2.
1.
4.
3.
Fig. 5
Installation sequence
Mounting the boiler and making connections (cont.)
6167585
Installation

17
1. 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.
2. Suspend the Vitodens from the wall mounting
bracket.
3. Only remove the clip under the gas pipe union nut
once the appliance has been installed. The clip is
no longer required.
4. Tighten union nuts so that they form a tight seal.
Tighten the union nuts as tightly as necessary and
ensure that the components are undamaged and
are functioning correctly throughout service life.
Observe torque settings if a torque wrench is avail-
able.
Check for gas tightness to BSI 6891.
Torque for union nuts
■G ½: 24 Nm
■G ¾: 30 Nm
When carrying out any work on gas connection fit-
tings, hold with a suitable tool. Never transfer any
forces to the internal components.
Installation sequence
Mounting the boiler and making connections (cont.)
6167585
Installation

18
Removing the front panel
1.
2x
3.
2.
Fig. 6
Type plate
Note
The type plate is attached to cover panel A in the
appliance: See page 42.
Additional type plate with access code (QR code)
marked with "i"
The type plate of the heat generator contains exten-
sive product information and an appliance-specific QR
code marked with "i" for direct access to product-spe-
cific information and product registration on the inter-
net.
The QR code contains the credentials for the registra-
tion and product information portal, and the 16-digit
serial number.
Attaching the additional type plate
Installation sequence
Mounting the boiler and making connections (cont.)
6167585
Installation

19
1. Take the additional type plate from the supplied
documentation.
Note
The documentation with the additional type plate
and QR code marked with "i" can be found on top
of the appliance.
2. In consultation with the system user, affix the addi-
tional type plate to the outside of the appliance.
The additional type plate must be visible to the flue
gas inspector.
Affix another QR code to the installation and serv-
ice instructions.
Connecting on the heating water and DHW sides
A B C D E F
Fig. 7
AHeating flow
BHeating return and fill/drain valve
CGas connection
DSafety valve
ECold water
FDHW
If the connections have not been fitted previously,
make the connections on the heating water and DHW
sides.
Connection accessories with locking ring fitting inclu-
ded in standard delivery
Connecting the condensate drain
Fig. 8
Installation sequence
Mounting the boiler and making connections (cont.)
6167585
Installation

20
Connect the drain hose with a constant fall and a pipe
vent to the drain network or a neutralising system.
Drain hose: Ø 19 x 800 mm
Note
Route the onward drain line inside the building as far
as possible.
If the onward drain line is routed outside the building:
■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 pre-
vents any risk of scalding.
Note
Observe local waste water regulations.
Filling the trap with water
Fig. 9
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.
Connecting the balanced flue pipe
Note
The labels "System certificate" and "Skoberne GmbH
or Groppalli flue system" enclosed with the technical
documentation may only be used in conjunction with
the Viessmann flue system made by Skoberne or
Groppalli.
Connecting the balanced flue pipe
Flue system installation instructions
Installation sequence
Connecting the condensate drain (cont.)
6167585
Installation