Viessmann Vitodens 111-W Guide rapide
Installation and service
instructions
for contractors
VIESMANN
Vitodens 111-W
Type B1LA, 6.5 to 35.0 kW
Gas condensing storage combi boiler
Natural gas and LPG version
For applicability, see the last page
VITODENS 111-W
5618 689 UAE 3/2012 Please keep safe.
2
Please follow these safety instructions closely to prevent accidents and mate-
rial 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 envi-
ronmental pollution.
Note
Details identified by the word "Note" con-
tain additional information.
Target group
These instructions are exclusively
designed for qualified personnel.
■ Work on gas equipment must only be
carried out by a qualified gas fitter.
■ Work on electrical equipment must
only be carried out by a qualified elec-
trician.
■ The system must be commissioned by
the system installer or a qualified per-
son authorised by the installer.
Regulations
Observe the following when working on
this system
■ all legal instructions regarding the pre-
vention of accidents,
■ all legal instructions regarding envi-
ronmental protection,
■ the Code of Practice of relevant trade
associations.
■ all current safety regulations as
defined by DIN, EN, DVGW, TRGI,
TRF, VDE and all locally applicable
standards.
If you smell gas
Danger
Escaping gas can lead to explo-
sions which may lead to 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.
■ Remove all people from the
danger zone.
■ Notify your gas or electricity
supplier from outside the build-
ing.
■ 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-threat-
ening poisoning.
■ Shut down the heating system.
■ Ventilate the boiler room.
■ Close all doors in the living
space.
Safety instructions
Safety instructions
5618 689 UAE
3
Working on the system
■ When using gas as fuel, also close the
main gas shut-off valve and safeguard
against unauthorised reopening.
■ Isolate the system from the power sup-
ply and check that it is no longer 'live',
e.g. by removing a separate fuse or by
means of a main isolator.
■ Safeguard the system against unau-
thorised reconnection.
!Please note
Electronic modules can be dam-
aged by electrostatic dis-
charges.
Touch earthed objects, such as
heating or water pipes, to dis-
charge static loads.
Repair work
!Please note
Repairing components that fulfil a
safety function can compromise
the safe operation of your heating
system.
Replace faulty components only
with original Viessmann spare
parts.
Ancillary components, spare and
wearing parts
!Please note
Spare and wearing parts that
have not been tested together
with the heating system can com-
promise its function. Installing
non-authorised components and
non-approved modifications or
conversions can compromise
safety and may invalidate our
warranty.
For replacements, use only orig-
inal spare parts supplied or
approved by Viessmann.
Safety instructions
Safety instructions (cont.)
5618 689 UAE
4
Service instructions
Installation information
Product information.............................................................................................. 6
Preparing for the boiler installation....................................................................... 7
Installation instructions
Installation sequence
Fitting the wall mounting bracket.......................................................................... 9
Fitting the boiler and making connections............................................................ 10
Opening the control unit casing............................................................................ 15
Electrical connections........................................................................................... 15
Service instructions
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance.......................................... 19
Further details regarding the individual steps....................................................... 20
Troubleshooting
Function sequence and possible faults................................................................ 38
Fault messages on the display............................................................................. 39
Repairs................................................................................................................. 43
Gas type conversion
Converting from LPG to natural gas .................................................................... 52
Control unit
Functions and operating conditions in weather-compensated mode................... 54
Designs
Connection and wiring diagram............................................................................ 56
Parts lists
Ordering parts...................................................................................................... 58
Overview of the assemblies................................................................................. 59
Casing assembly.................................................................................................. 60
Heat cell assembly............................................................................................... 61
Burner assembly.................................................................................................. 63
Hydraulic assembly.............................................................................................. 65
Aqua plate assembly............................................................................................ 67
Control unit assembly........................................................................................... 68
Cylinder assembly................................................................................................ 70
Miscellaneous assembly...................................................................................... 71
Index
Index
5618 689 UAE
5
Specification....................................................................................................... 73
Certificates
Declaration of conformity...................................................................................... 74
Keyword index.................................................................................................... 75
Index
Index (cont.)
5618 689 UAE
6
Vitodens 111-W, type B1LA
Preset for operation with natural gas. Conversion to LPG P requires a gas con-
version kit.
Conversion for other countries
The Vitodens 111-W should generally
only be delivered to those countries
specified on the type plate. For deliveries
to alternative countries, an approved
contractor must arrange individual
approval on his own initiative and in
accordance with the law of the country in
question.
Installation information
Product information
5618 689 UAE
7
Dimensions and connections
35
480
945
1003
497
740
900
A
BC
D
E
F GH K
166
AArea for electrical connections
BHeating flow
CCondensate drain
DHeating return
EFilling/draining
FGas connection
GSafety valve (on the DHW side)
HCold water
KDHW
Installation information
Preparing for the boiler installation
5618 689 UAE
Service
8
Preparing the connections
Note
This boiler (IP rating: IP X4D) is
approved for installation in wet rooms
inside safety zone 1 in accordance with
DIN VDE 0100, providing the occurrence
of hosed water can be ruled out.
Observe the requirements of DIN VDE
0100.
1. Prepare the water connections. Flush
the heating system.
2. Prepare the gas connection.
3. Prepare the electrical connections.
■Power cable NYM-J 3 x 1.5 mm2.
■ Accessory cables:
NYM-O two-core min. 0.5 mm2.
Installation information
Preparing for the boiler installation (cont.)
5618 689 UAE
9
250
Ø10
Installation sequence
Fitting the wall mounting bracket
5618 689 UAE
Installation
10
Removing the front panel and mounting the boiler
2x
2.
3.
1.
1. Undo screws at the bottom of the
boiler; do not remove completely.
2. Remove front panel.
3. Hook the boiler into the wall mounting
bracket.
Making the connections on the water side
For fittings on the heating water
side and DHW side, see separate
installation instructions. !Please note
To prevent equipment damage,
install all pipework free of load
and torque stresses.
Installation sequence
Fitting the boiler and making connections
5618 689 UAE
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8
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