Viessmann Vitodens 200-W WB2B Series Instrucciones de funcionamiento

VIESMANN

Service instructions

for contractors

Vitodens 200-W

Type WB2B, 80 and 105 kW

Wall mounted gas fired condensing boiler

Natural gas version

For applicability, see the last page

VITODENS 200-W

5692 761 GB 1 /2008 Please keep safe.

Please follow these safety instructions closely to prevent accidents and

material 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

environmental pollution.

Note

Details identified by the word "Note"

contain 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 fit-

ter.

&Work on electrical equipment must

only be carried out by a qualified

electrician.

&The system must be commissioned

by the system installer or a qualified

person authorised by the installer.

Regulations

Observe the following when working

on this system

&all legal instructions regarding the

prevention of accidents,

&all legal instructions regarding

environmental 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.

If you smell gas

Danger

Escaping gas can lead to

explosions which may result in

serious injury.

&Never smoke. Prevent naked

flames and sparks. Never

switch lights or electrical

appliances 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

building.

&Shut off the electricity supply

to the building from a safe

place (outside the building).

If you smell flue gas

Danger

Flue gas can lead to life-threa-

tening poisoning.

&Shut down the heating sys-

tem.

&Ventilate the boiler room.

&Close all doors leading to the

living space.

Safety instructions

5692 761 GB

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

supply 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

unauthorised reconnection.

!Please note

Electronic modules can be

damaged 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

fulfil a safety function can com-

promise 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

compromise its function. Instal-

ling non-authorised compo-

nents and non-approved

modifications/conversion can

compromise safety and may

invalidate our warranty.

For replacements, use only ori-

ginal spare parts from

Viessmann or those which are

approved by Viessmann.

Safety instructions (cont.)

Safety instructions

5692 761 GB

Commissioning, inspection, maintenance

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

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

Coding

Code 1........................................................................................................ 36

Code 2........................................................................................................ 39

Resetting codes to their delivered condition ................................................ 59

Service scans

Service level overview ............................................................................... 60

Temperatures, boiler coding card and brief scans ....................................... 61

Checking outputs (relay test) ...................................................................... 64

Scanning operating conditions and sensors ................................................ 65

Troubleshooting

Fault display ............................................................................................... 68

Fault codes................................................................................................. 70

Repairs ...................................................................................................... 81

Function description

Constant temperature control unit ............................................................... 88

Weather-compensated control unit.............................................................. 89

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

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

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

Electronic combustion control unit............................................................... 102

Designs

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

Connection and wiring diagram –external connections ............................... 105

Parts lists .................................................................................................. 107

Commissioning/service reports

Specification............................................................................................. 113

Certificates

Declaration of conformity ............................................................................ 114

Manufacturer's certificate according to the 1st BImSchV [Germany]............. 115

Keyword index .......................................................................................... 116

Index

5692 761 GB

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

Commissioning steps

Inspection steps

Maintenance steps Page

!!!



• • 01. Opening the boiler ................................................................ 7

•02. Filling the heating system ................................................. 8

•03. Venting the boiler .................................................................. 9

•04. Venting the heating system............................................... 9

•05. Filling the siphon with water............................................. 10

••• 06. Checking all connections on the heating water

side and DHW side for leaks

•07. Checking the power supply connection

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

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

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

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

• • 10. Checking the gas type......................................................... 12

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

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

•13. Setting the maximum output ........................................... 15

•14. Checking the balanced flue system for tightness

(annular gap check) ............................................................. 16

• • 15. Removing the burner and checking the burner

gasket........................................................................................ 17

• • 16. Checking the burner gauze assembly &replacing,

if required................................................................................. 19

• • 17. Checking and adjusting the ignition and ionisation

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

• • 18. Cleaning the combustion chamber/heat exchanger

and installing the burner .................................................... 20

• • 19. Checking the condensate drain and cleaning the

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

Steps - commissioning, inspection and maintenance

Commissioning, inspection, maintenance

5692 761 GB

Commissioning steps

Inspection steps

Maintenance steps Page

!!!



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

• • 21. Checking the diaphragm expansion vessel and

system pressure.................................................................... 22

••• 22. Checking the function of all safety valves

••• 23. Checking the tightness of electrical connections

••• 24. Checking all gas equipment for tightness at

operating pressure .............................................................. 22

••• 25. Flue gas emissions test...................................................... 23

•26. Matching the control unit to the heating system ...... 24

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

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

•28. Connecting the control unit to the LON system

(only for weather-compensated control units) .......... 32

•29. Instructing the system user .............................................. 34

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

Steps - commissioning, inspection and . . . (cont.)

Commissioning, inspection, maintenance

5692 761 GB

Opening the boiler

1. Undo screws Aat the bottom and

remove front panel B.

2. Release the side closures and

pivot control unit Cdown.

3. Undo screws and remove cover

panel D.

Further details regarding the individual steps

Commissioning, inspection, maintenance

5692 761 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 system and multi-boiler systems ≤200 kW: 11.2 °dH

(2.0 mol/m

)

&Multi-boiler systems > 200 kW: 8.4 °dH (1.5 mol/m

)

&An antifreeze additive suitable for heating systems can be mixed with

the fill water. The antifreeze manufacturer must verify its suitability.

1. Check the inlet pressure of the dia-

phragm expansion vessel.

2. Close the gas shut-off valve.

3. Fill the heating system via boiler fill

& drain valve A. (minimum system

pressure > 1.0 bar).

4. Close boiler fill & drain valve A.

Further details regarding the individual steps (cont.)

Commissioning, inspection, maintenance

5692 761 GB

Venting the boiler

1. Close shut-off valves Aand B.

2. Connect the drain hose to drain

valve C.

Connect the fill hose to boiler fill &

drain valve F(if no longer con-

nected).

3. Close shut-off valve D.

4. Open valve F.

5. Vent the first indirect coil through

shut-off valve Eat mains pressure

until no more air noise is audible.

6. Close shut-off valve Eand open

shut-off valve D.

7. Vent the second indirect coil

through shut-off valve Dat mains

pressure until no more air noise is

audible.

8. Close valves Cand F.

9. Open shut-off valve E.

Note

Shut-off valves Dand Emust be

open to enable the boiler to oper-

ate.

Venting the heating system

1. Close the gas shut-off valve and

switch ON the control unit ON/OFF

switch.

Further details regarding the individual steps (cont.)

Commissioning, inspection, maintenance

5692 761 GB

2. Activate the venting program via

coding address "2F:1".

Note

To call up code 1 and for setting the

coding address, see page 36.

For function and sequence of the

venting program, see page 96.

Whilst the venting program runs,

the display shows "EL" (constant

temperature control unit) or

"Entlüftung" (Venting) (weather-

compensated control unit).

3. Check the system pressure.

Filling the siphon with water

1. Pull off cap Adownwards.

2. Undo union nut Band pull off

siphon Cdownwards.

3. Fill siphon Cwith water and refit it.

4. Push on cap Afrom below.

Further details regarding the individual steps (cont.)

Commissioning, inspection, maintenance

5692 761 GB

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