Viessmann Vitodens 100-W Quick guide

Installation and service
instructions
for contractors
VIESMANN
Vitodens 100-W
Type WB1C, 7.4 to 35.0 kW
Wall mounted gas condensing boiler
Natural gas and LPG version
For applicability, see the last page
VITODENS 100-W
5603 938 GB 3/2011 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,
■ Gas Safety (Installation & Use) Regu-
lations
– the appropriate Building Regulation
either the Building regulations, the
Building Regulation (Scotland),
Building Regulations (Northern Ire-
land),
– the Water Fittings Regulation or
Water Bylaws in Scotland,
– the current I.E.E. Wiring Regula-
tions.
If you smell gas
Danger
Escaping gas can lead to explo-
sions which may result in serious
injury.
■ Never 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).
Safety instructions
Safety instructions
5603 938 GB

3
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 leading to the
living space.
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 electro-static dis-
charges.
Touch earthed objects, such as
heating or water pipes, to dis-
charge static loads.
Repair work
!Please note
Repairing components which ful-
fil a safety function can compro-
mise 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 which
have not been tested together
with the heating system can com-
promise its function. Installing
non-authorised components and
non-approved modifications/con-
version can compromise safety
and may invalidate our warranty.
For replacements, use only orig-
inal spare parts from Viessmann
or those which are approved by
Viessmann.
Safety instructions
Safety instructions (cont.)
5603 938 GB

4
Installation instructions
Preparing for installation
Product information.............................................................................................. 6
Preparing for installation....................................................................................... 6
Installation sequence
Fitting the boiler and assembling connections..................................................... 10
Opening the control unit....................................................................................... 14
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................................................................ 36
Fault messages on the display............................................................................. 37
Repairs................................................................................................................. 41
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............................................................................ 55
Parts lists
Ordering parts...................................................................................................... 57
Overview of the assemblies................................................................................. 58
Sheet metal parts assembly................................................................................. 59
Heat cell assembly............................................................................................... 60
Burner assembly.................................................................................................. 61
Vitodens hydraulic assembly................................................................................ 63
System boiler hydraulic assembly........................................................................ 65
Combi hydraulic assembly................................................................................... 65
VBC LCV control unit assembly........................................................................... 68
Miscellaneous assembly...................................................................................... 68
Specification....................................................................................................... 70
Index
Index
5603 938 GB

5
Certificates
Declaration of conformity...................................................................................... 71
Keyword index.................................................................................................... 72
Index
Index (cont.)
5603 938 GB

6
Vitodens 100-W, WB1C
Preset for operation with natural gas.
Preparing for installation
Preparing for the boiler installation
Dimensions and connections
34
5
250
68
400
700
58 58
123123
B
AC E
F
D
156
350
125
860
AHeating flow
BGas condensing boiler:
Cylinder flow
Gas condensing combi boiler:
DHW
CGas connection
DGas condensing boiler:
Cylinder return
Gas condensing combi boiler:
Cold water
Preparing for installation
Product information
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7
EHeating return
FCondensate drain/safety valve
drain: Plastic hose 7 22 mm
Preparing for installation
Preparing for installation (cont.)
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Installation

8
Fitting the wall mounting bracket
250
A
Ø10
AInstallation template Vitodens
Preparing for installation
Preparing for installation (cont.)
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9
1. Position the supplied installation tem-
plate on the wall.
2. Mark out the rawl plug holes.
3. Drill 710 mm holes and insert the
supplied rawl plugs.
4. Fit wall mounting bracket with screws
supplied.
Fit installation aid or mounting frame
Installation aid or mounting frame
installation instructions
Preparing the connections
!Please note
To prevent equipment damage,
install all pipework free of load
and torque stresses.
1. Prepare the water connections. Flush
the heating system.
2. Prepare gas connection.
3. Prepare the electrical connections.
■Power cable NYM-J 3 x 1.5 mm2.
■ Accessory cables:
NYM-O 2-core min. 0.5 mm2.
Preparing for installation
Preparing for installation (cont.)
5603 938 GB
Installation

10
Removing the front panel and mounting the boiler
2x
2.
3.
1.
1. Release screws at the bottom of the
boiler; do not remove completely.
2. Remove front panel.
3. Hook the boiler into the wall mounting
bracket.
Installing connections on the water side
For fittings on the heating water side and DHW side, see separate installation
instructions.
Installation sequence
Fitting the boiler and assembling connections
5603 938 GB