Viessmann Vitodens 200-W System Istruzioni operative

Service instructions

for contractors

VIESMANN

Vitodens 200-W

Type WB2C

Wall mounted gas condensing boiler

4.8 to 35 kW natural gas and LPG version

Gas Council no.:

41-819-14; 41-819-15; 41-819-16; 41-819-17 (system boilers)

47-819-09; 47-819-10; 47-819-11 (combi boilers)

For applicability, see the last page

VITODENS 200-W

5692 857 GB 4/2010 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 857 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 857 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 menu................................................................................. 83

Diagnosis.............................................................................................................. 83

Checking outputs (relay test)................................................................................ 89

Troubleshooting

Fault display......................................................................................................... 91

Fault codes........................................................................................................... 93

Repairs................................................................................................................. 105

Function description

Constant temperature control unit........................................................................ 115

Weather-compensated control unit...................................................................... 116

Internal extensions (accessories)......................................................................... 118

External extensions (accessories)........................................................................ 120

Control functions.................................................................................................. 124

Allocating heating circuits to the remote control................................................... 132

Electronic combustion controller.......................................................................... 132

Designs

Connection and wiring diagrams – internal connections ..................................... 134

Connection and wiring diagram – external connections....................................... 136

Index

5692 857 GB

Parts lists............................................................................................................ 138

Commissioning/service reports........................................................................ 144

Specification....................................................................................................... 145

Certificates

Declaration of conformity...................................................................................... 147

Manufacturer's certificate according to the 1st BImSchV [Germany]................... 148

Keyword index.................................................................................................... 149

Index

Index (cont.)

5692 857 GB

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

Commissioning steps

Inspection steps

Maintenance steps Page

•1. Filling the heating system.............................................. 8

•2. Checking power supply connection

•3. Selecting the language (if required) - only for weather-

compensated control units............................................ 9

• • 4. Setting the time and date (if required) - only for

weather-compensated control units............................. 9

• • 5. Setting the time and date (if required) - for constant

temperature control units.............................................. 10

•6. Venting the boiler........................................................... 10

•7. Venting the heating system........................................... 11

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

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

and DHW side for leaks

•10. Designating heating circuits – only for weather-

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

• • 11. Checking the gas type.................................................... 12

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

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

••• 14. Checking the static and supply pressure..................... 15

•15. Setting the maximum output......................................... 17

•16. Checking the balanced flue system tightness (annular

gap check)....................................................................... 18

• • 17. Burner removal .............................................................. 19

• • 18. Checking the burner gasket and the burner gauze

assembly......................................................................... 19

• • 19. Checking and adjusting the ignition and ionisation

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

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance

5692 857 GB

Commissioning steps

Inspection steps

Maintenance steps Page

• • 20. Cleaning the heat exchanger and installing the

burner.............................................................................. 21

• • 21. Checking the condensate drain and cleaning the

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

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

•23. Checking the flow limiter (only for gas combi

boilers)............................................................................. 24

• • 24. Checking the diaphragm expansion vessel and

system pressure............................................................. 24

••• 25. Checking the function of safety valves

••• 26. Checking electrical connections for firm seating

••• 27. Checking all gas equipment for tightness at operating

pressure........................................................................... 25

• • 28. Checking the combustion quality................................. 25

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

•30. Matching the control unit to the heating system......... 27

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

compensated control units)........................................... 32

•32. Connecting the control unit to the LON system (only

for weather-compensated control units)...................... 35

•33. Scanning and resetting the Service display................ 37

•34. Instructing the system user........................................... 38

Commissioning, inspection, maintenance

Steps - commissioning, inspection and… (cont.)

5692 857 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 hardness exceeding 300 ppm (3.0 mol/m3), e.g. using

a small softening system for heating water (see Viessmann Vitoset pricelist).

■ 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 in the heating return (at

the connection set or on site) (mini-

mum system pressure > 1.0 bar).

Note

If the control unit has not been

switched ON prior to filling the sys-

tem, then the servomotor of the

diverter valve will still be in its central

position, and the system will be com-

pletely filled.

Note

If an external filling loop is fitted, it

must meet the requirements of the

Water Fittings Regulations 1999 Sec-

tion G 24.1 and G 24.2.

Commissioning, inspection, maintenance

Further details regarding the individual steps

5692 857 GB

4. If the control unit had already been

switched ON before filling began:

Switch control unit ON and activate

filling function (see next chapter).

5. Close boiler drain & fill valve A.

Activating filling function with

weather-compensated control units:

1. Press OK and å simultaneously

for approx. 4 s.

2. "Service functions"

3. "Filling"

4. Ending filling function:

Press OK or ä.

Activating filling function with con-

stant temperature control units:

1. Press OK and å simultaneously

for approx. 4 s.

2. Select "4" with Ú and confirm with

OK.

When the filling function is active, "bF

on" will be displayed.

3. Ending filling function:

Press ä.

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"

3. "Language"

Sprache

Cesky CZ

Deutsch DE

Dansk

English

Wählen mit

4. Set the required language with /.

Setting the time and date (if required) - only for weather-com-

pensated control units

During commissioning, or after pro-

longed time out of use, the time and date

need to be reset.

Extended menu:

1. å

2. "Settings"

3. "Time / Date"

4. Set current time and date.

Commissioning, inspection, maintenance

Further details regarding the individual steps (cont.)

5692 857 GB

Setting the time and date (if required) - for constant temperature

control units

The time and date need to be reset dur-

ing commissioning or after prolonged

time out of use. After starting the system,

the display flashes the time ( ).

Press the following keys:

1. / for the required time.

2. OK to confirm; the new time unit is

saved, appears.

3. / for the required date.

4. OK to confirm; the new date is

saved.

Venting the boiler

1. Close the shut-off valves on the heat-

ing water side.

2. Connect the drain hose between top

valve B and a drain outlet.

3. Open valves A and B, and vent at

mains pressure until no sound of

escaping air can be heard.

Commissioning, inspection, maintenance

Further details regarding the individual steps (cont.)

5692 857 GB

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