Viessmann Vitodens 200-W System Betriebsanleitung

Service instructions

for contractors

VIESMANN

Vitodens 200-W

Type WB2C, 80 and 105 kW

Wall mounted gas condensing boiler

Natural gas and LPG version

For applicability, see the last page

VITODENS 200-W

5692 902 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

5692 902 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.)

5692 902 GB

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance.......................................... 6

Further details regarding the individual steps....................................................... 8

Code 1

Calling up coding level 1...................................................................................... 39

General/group "1"................................................................................................. 40

Boiler/group "2".................................................................................................... 42

DHW/group "3"..................................................................................................... 43

Solar/group "4"..................................................................................................... 44

Heating circuit 1, heating circuit 2, heating circuit 3/group "5"............................. 46

Code 2

Calling up coding level 2...................................................................................... 53

General/group "1"................................................................................................. 54

Boiler/group "2".................................................................................................... 62

DHW/group "3"..................................................................................................... 64

Solar/group "4"..................................................................................................... 66

Heating circuit 1, heating circuit 2, heating circuit 3/group "5"............................. 73

Diagnosis and service scans

Calling up the service level................................................................................... 81

Diagnosis.............................................................................................................. 82

Checking outputs (relay test)................................................................................ 88

Troubleshooting

Fault display......................................................................................................... 90

Fault codes........................................................................................................... 92

Repair................................................................................................................... 106

Function description

Constant temperature control unit........................................................................ 112

Weather-compensated control unit...................................................................... 113

Internal extensions (accessories)......................................................................... 114

External extensions (accessories)........................................................................ 116

Control functions.................................................................................................. 120

Allocating heating circuits to the remote control................................................... 127

Electronic combustion controller.......................................................................... 127

Designs

Connection and wiring diagram – internal connections ....................................... 129

Connection and wiring diagram – external connections....................................... 130

Index

5692 902 GB

Parts list

Heat cell assembly............................................................................................... 132

Burner assembly.................................................................................................. 134

Hydraulic assembly.............................................................................................. 135

Sheet metal parts assembly................................................................................. 136

VBC134-A04.102 control unit assembly............................................................... 137

Miscellaneous....................................................................................................... 138

Commissioning/service reports

............................................................................................................................. 140

Specification....................................................................................................... 141

Certificates

Declaration of conformity...................................................................................... 142

Manufacturer's certificate according to the 1st BImSchV [Germany]................... 142

Keyword index.................................................................................................... 143

Index

Index (cont.)

5692 902 GB

For further information regarding the individual steps, see the page indicated

Commissioning steps

Inspection steps

Maintenance steps Page

••• 1. Opening the boiler.......................................................... 8

•2. Filling the heating system.............................................. 9

•3. Venting the boiler by flushing....................................... 10

•4. Selecting the language (if required) – only for

weather-compensated control units............................. 10

• • 5. Setting the time and date (if required) – only for

weather-compensated control units............................. 11

•6. Venting the heating system........................................... 11

•7. Filling the siphon with water......................................... 12

••• 8. Checking all connections on the heating water side

and DHW side for leaks

•9. Checking the power supply

•10. Designating heating circuits – only for weather-

compensated control units............................................ 12

• • 11. Checking the gas type.................................................... 13

•12. Gas type conversion (only for operation with LPG).... 13

••• 13. Function sequence and possible faults....................... 14

••• 14. Checking the static and supply pressure..................... 16

•15. Maximum output setting................................................ 18

•16. Checking the balanced flue system for tightness

(annular gap check)........................................................ 18

• • 17. Removing the burner and checking the burner gasket 19

• • 18. Checking the burner gauze assembly & replacing if

required........................................................................... 20

• • 19. Checking and adjusting the ignition and ionisation

electrodes........................................................................ 21

• • 20. Cleaning the combustion chamber/heat exchanger

and installing the burner................................................ 22

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance

5692 902 GB

Commissioning steps

Inspection steps

Maintenance steps Page

• • 21. Checking the condensate drain and cleaning the

siphon.............................................................................. 23

• • 22. Checking the neutralising system (if installed)

• • 23. Checking the diaphragm expansion vessel and

system pressure............................................................. 23

••• 24. Checking the function of safety valves

••• 25. Checking electrical connections for firm seating

••• 26. Checking gas equipment for tightness at operating

pressure .......................................................................... 24

••• 27. Flue gas emissions test................................................. 24

••• 28. Checking the external LPG safety valve (if installed)

•29. Matching the control unit to the heating system ........ 26

•30. Adjusting the heating curves (only for weather-

compensated control units)........................................... 33

•31. Connecting the control unit to the LON....................... 35

•32. Scanning and resetting the "Service" display............. 37

•33. Instructing the system user........................................... 38

Commissioning, inspection, maintenance

Steps - commissioning, inspection and… (cont.)

5692 902 GB

Opening the boiler

Commissioning, inspection, maintenance

Further details regarding the individual steps

5692 902 GB

Filling the heating system

!Please note

Unsuitable fill water increases the level of deposits and corrosion and may

lead to boiler damage.

■ Thoroughly flush the entire heating system prior to filling it with water.

■ Only use fill water of potable quality.

■ Soften fill water with a water hardness in excess of the following values, e.g.

with a small softening system for heating water (see the Viessmann Vitoset

pricelist):

Single boiler systems and multi boiler systems ≤ 200 kW:

11.2 °dH (2.0 mol/m3)

Multi boiler systems > 200 kW: 8.4 °dH (1.5 mol/m3)

■ An antifreeze additive suitable for heating systems can be added to the fill

water. The antifreeze manufacturer must verify its suitability.

1. Check the pre-charge pressure of the

diaphragm expansion vessel.

2. Close the gas shut-off valve.

3. Fill the heating system via boiler drain

& fill valve A. (Minimum system

pressure > 1.0 bar).

4. Close boiler drain & fill valve A.

Commissioning, inspection, maintenance

Further details regarding the individual steps (cont.)

5692 902 GB

Venting the boiler by flushing

E D

1. Close shut-off valves A and B.

2. Connect the drain hose to drain valve

Connect the fill hose to boiler drain &

fill valve F (if no longer connec-

ted).

3. Close shut-off valve D.

4. Open valve F.

5. Vent the first indirect coil through

shut-off valve E at mains pressure

until no more air noise is audible.

6. Close shut-off valve E and open

shut-off valve D.

7. Vent the second indirect coil through

shut-off valve D at mains pressure

until no more air noise is audible.

8. Close valves C and F.

9. Open shut-off valve E.

Note

Shut-off valves D and E must be

open to enable the boiler to operate.

Selecting the language (if required) – only for weather-compen-

sated control units

Note

At the commissioning stage, the display

is in German (default setting)

Extended menu:

1. å

2. "Settings"

Commissioning, inspection, maintenance

Further details regarding the individual steps (cont.)

5692 902 GB

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