Viessmann Vitodens 200-W System Betriebsanleitung

Service instructions

for contractors

VIESMANN

Vitodens 200-W

Type WB2B, 4.8 to 35.0 kW

Wall mounted gas condensing boiler

Natural gas and LPG version

For applicability, see the last page

VITODENS 200-W

5692 812 GB 10/2009 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 812 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 812 GB

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance.......................................... 5

Further details regarding the individual steps....................................................... 7

Codes

Code 1.................................................................................................................. 35

Code 2.................................................................................................................. 38

Resetting codes to their delivered condition......................................................... 55

Service scans

Service level overview ......................................................................................... 56

Temperatures, boiler coding card and brief scans .............................................. 57

Checking outputs (relay test)................................................................................ 60

Scanning operating conditions and sensors ........................................................ 61

Troubleshooting

Fault display......................................................................................................... 64

Fault codes........................................................................................................... 66

Repairs................................................................................................................. 76

Function description

Constant temperature control unit........................................................................ 87

Weather-compensated control unit...................................................................... 88

Extensions for external connections (accessories).............................................. 91

Control functions.................................................................................................. 95

Remote control DIP switches............................................................................... 101

Electronic combustion controller.......................................................................... 102

Designs

Connection and wiring diagram – internal connections ....................................... 104

Connection and wiring diagram – external connections....................................... 106

Parts lists............................................................................................................ 108

Commissioning/service reports........................................................................ 114

Specification....................................................................................................... 115

Certificates

Declaration of conformity...................................................................................... 116

Manufacturer's certificate according to the 1st BImSchV [Germany]................... 116

Keyword index.................................................................................................... 117

Index

5692 812 GB

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

Commissioning steps

Inspection steps

Maintenance steps Page

•1. Filling the heating system.............................................. 7

•2. Venting the boiler........................................................... 8

•3. Venting the heating system........................................... 9

•4. Filling the siphon with water......................................... 9

•5. Checking power supply connection

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

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

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

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

• • 8. Checking the gas type.................................................... 11

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

••• 10. Function sequence and possible faults....................... 12

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

•12. Setting the maximum output ........................................ 16

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

and DHW side for leaks

•14. Checking the balanced flue system for tightness

(annular gap check)........................................................ 17

• • 15. Burner removal .............................................................. 18

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

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

• • 17. Checking and adjusting the ignition and ionisation

electrodes........................................................................ 20

• • 18. Cleaning the heating surfaces and installing the

burner.............................................................................. 20

• • 19. Checking the condensate drain and cleaning the

siphon.............................................................................. 22

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

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance

5692 812 GB

Commissioning steps

Inspection steps

Maintenance steps Page

•21. Flow limiter (only for gas combi boilers)...................... 22

• • 22. Checking the diaphragm expansion vessel and

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

••• 23. Checking the function of safety valves

••• 24. Checking electrical connections for tightness

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

pressure .......................................................................... 23

••• 26. Flue gas emissions test................................................. 23

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

•28. Matching the control unit to the heating system ........ 25

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

compensated control units)........................................... 29

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

for weather-compensated control units)...................... 31

•31. Instructing the system user........................................... 33

•32. Scanning and resetting the "Service" display............. 34

Commissioning, inspection, maintenance

Steps - commissioning, inspection and… (cont.)

5692 812 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 3.0 mol/m3, e.g. using a small

softening system for heating water (see Viessmann Vitoset price list).

■ An antifreeze additive suitable for heating systems can be mixed with 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 the boiler

fill & drain valve A in the heating

return (at the connection set or on

site). (minimum 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.

4. If the control unit had already been

switched ON before filling began:

Switch ON the control unit and acti-

vate the fill program via coding

address "2F:2".

5. Close boiler fill & drain valve A.

Commissioning, inspection, maintenance

Further details regarding the individual steps

5692 812 GB

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

using mains pressure until no more

air noise is audible.

If required, move the 3-way valve into

its central position to achieve com-

plete venting. For this, set code "2F:

2".

4. Close valves A and B and open

the heating water shut-off valves.

Commissioning, inspection, maintenance

Further details regarding the individual steps (cont.)

5692 812 GB

Venting the heating system

1. Close the gas shut-off valve and

switch ON the control unit.

2. Activate the venting program via cod-

ing address "2F:1" in code 1.

Note

To call up code 1 and for setting the

coding address, see page 35.

For function and sequence of the

venting program, see page 96.

Whilst the venting program runs, the

display shows "EL" (constant temper-

ature control unit) or "Venting"

(weather-compensated control unit).

3. Check the system pressure.

Filling the siphon with water

1. Remove retaining clip A and siphon

2. Fill siphon B with water.

3. Fit siphon B and secure with retain-

ing clip A.

Commissioning, inspection, maintenance

Further details regarding the individual steps (cont.)

5692 812 GB

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

pensated control units

Note

■ During commissioning, or after a pro-

longed time out of use, it may be nec-

essary to reset the time and date, if the

time flashes in the display.

■ When the unit is first taken into opera-

tion the display is in German (default

language setting):

Time (see step 1)

Uhrzeit

Date (see step 2)

Datum

Press the following keys:

1. a/bfor the current time.

2. dto confirm; "Datum" is dis-

played.

3. a/bfor the current date.

4. dto confirm.

Commissioning, inspection, maintenance

Further details regarding the individual steps (cont.)

5692 812 GB

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