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.

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

5603 938 GB

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

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

5603 938 GB

Certificates

Declaration of conformity...................................................................................... 71

Keyword index.................................................................................................... 72

Index

Index (cont.)

5603 938 GB

Vitodens 100-W, WB1C

Preset for operation with natural gas.

Preparing for installation

Preparing for the boiler installation

Dimensions and connections

250

400

700

58 58

123123

AC E

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

5603 938 GB

EHeating return

FCondensate drain/safety valve

drain: Plastic hose 7 22 mm

Preparing for installation

Preparing for installation (cont.)

5603 938 GB

Installation

Fitting the wall mounting bracket

250

Ø10

AInstallation template Vitodens

Preparing for installation

Preparing for installation (cont.)

5603 938 GB

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

Removing the front panel and mounting the boiler

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

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