Viessmann VITODENS 200 Betriebsanleitung

VIESMANN

Service instructions

for contractors

Vitodens 200

Type WB2A, 8.8 to 20.0 kW

Wall mounted gas fired condensing boiler

Natural gas and LPG version

For applicability, see the last page

VITODENS 200

5692 580 GB 4/2006 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 580 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 mains isola-

tor.

&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 580 GB

Commissioning, inspection, maintenance

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

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

Coding

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

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

Resetting codes to their delivered condition ................................................ 57

Service scans

Service level overview ............................................................................... 58

Temperatures, boiler coding card and brief scans ....................................... 59

Checking outputs (relay test) ...................................................................... 62

Scanning operating conditions and sensors ................................................ 63

Troubleshooting

Fault display ............................................................................................... 66

Fault codes................................................................................................. 68

Repairs ...................................................................................................... 78

Function description

Constant temperature control unit ............................................................... 86

Weather-compensated control unit.............................................................. 87

Extensions for external connections (accessories) ...................................... 89

Control functions ........................................................................................ 93

Remote control DIP switches ...................................................................... 99

Designs

Connection and wiring diagrams –internal connections .............................. 101

Connection and wiring diagrams –external connections.............................. 102

Parts lists .................................................................................................. 104

Commissioning/service reports ............................................................... 110

Specification............................................................................................. 111

Certificates

Declaration of conformity ............................................................................ 113

Manufacturer's certificate according to the 1st BImSchV [Germany]............. 114

Keyword index .......................................................................................... 115

Index

5692 580 GB

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

Commissioning steps

Inspection steps

Maintenance steps Page

!!!



•01. Filling the heating system ................................................. 7

•02. Venting the boiler .................................................................. 8

•03. Venting the heating system............................................... 8

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

•05. Checking the power supply connection

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

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

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

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

• • 08. Checking the gas type......................................................... 10

•09. Gas type conversion............................................................ 11

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

••• 11. Checking static and supply pressure ........................... 13

•12. Setting the maximum output ........................................... 14

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

(primary) side and DHW (secondary) side for leaks

••• 14. Checking the burner (recording values on page

110 of the commissioning report)

•15. Checking the balanced flue system for soundness

(annular gap check) ............................................................. 15

• • 16. Burner removal ..................................................................... 16

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

assembly .................................................................................. 17

• • 18. Checking and adjusting the ignition and ionisation

electrodes ................................................................................ 18

• • 19. Cleaning the heating surfaces and installing the

burner........................................................................................ 18

Steps - commissioning, inspection and maintenance

Commissioning, inspection, maintenance

5692 580 GB

Commissioning steps

Inspection steps

Maintenance steps Page

!!!



• • 20. Checking the condensate drain and cleaning the

siphon........................................................................................ 20

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

• • 22. Checking the diaphragm expansion vessel and

system pressure.................................................................... 20

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

••• 24. Checking the tightness of electrical connections

••• 25. Checking all gas equipment for soundness at

operating pressure .............................................................. 21

••• 26. Flue gas emissions test...................................................... 21

••• 27. Checking the ionisation current ..................................... 23

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

installed)

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

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

compensated control units).............................................. 28

•31. Connecting the control unit to the LON system

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

•32. Instructing the system user .............................................. 33

•33. Scanning and resetting the "Maintenance" display 33

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

Commissioning, inspection, maintenance

5692 580 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 hardness above 3.0 mol/m

, e.g. with a small

softening system for heating water (see the 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 inlet pressure of the dia-

phragm expansion vessel.

2. Close the gas shut-off valve.

3. Fill the heating system at the boiler

fill & drain valve Ain the heating

return (on the connection set or on

site). (Minimum system pressure

> 0.8 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 cen-

tral position, and the system will be

completely filled.

4. If the control unit had already been

switched ON before filling began:

Switch ON the control unit and acti-

vate the filling program via coding

address "2F:2".

5. Close boiler fill & drain valve A.

6. Close the shut-off valves on the

heating water side.

Further details regarding the individual steps

Commissioning, inspection, maintenance

5692 580 GB

Venting the boiler

1. Close the shut-off valves on the

heating water side.

2. Connect the drain hose between

top valve Band a drain outlet.

3. Open valves Aand B, and vent

at mains pressure until no sound of

escaping air can be heard.

4. Close valves Aand Band open

the heating water shut-off valves.

Venting the heating system

1. Close the gas shut-off valve and

switch ON the control unit.

Further details regarding the individual steps (cont.)

Commissioning, inspection, maintenance

5692 580 GB

2. Activate the venting program via

coding 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 94.

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. Remove the retaining clip and

siphon A.

2. Fill the siphon with water.

3. Fit siphon Aand secure with the

retaining clip.

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

pensated control units

Note

During commissioning, or after a prolonged time out of use, it may be necessary

to reset the time and date, if the time flashes in the display.

Press the following keys:

1. a/bfor the current time.

2. dto confirm; "Datum" (date)

is displayed.

3. a/bfor the current date.

Further details regarding the individual steps (cont.)

Commissioning, inspection, maintenance

5692 580 GB

4. dto confirm.

Selecting the language (if required) - only for weather-com-

pensated control units

Press the following keys:

1. c"Heizkreis wählen" (select

heating circuit) will be dis-

played.

2. dto confirm; wait approx. 4 s.

3. cpress again.

4. bfor the required language.

5. dto confirm.

Checking the gas type

Note

In the delivered condition, the Vitodens 200 is set up for natural gas E.

1. Check the gas category and

Wobbe index (Wo) with your mains

gas or LPG supplier and compare

them with the details on the burner

label.

2. If these details do not match, con-

vert the burner to the available gas

type.

Conversion kit installation

instructions

3. Adjust the gas type via coding

address "1E" at the control unit.

Note

To call up code 1 and for setting the

coding address, see page 35.

4. Record the gas type in the service

report on page 110.

Wobbe index ranges

Gas type Wobbe index range

kWh/m

MJ/m

Delivered condition

Natural gas E 12.0 to 16.1 43.2 to 58.0

After conversion

Natural gas LL 10.0 to 13.1 36.0 to 47.2

LPG P 20.3 to 21.3 72.9 to 76.8

Further details regarding the individual steps (cont.)

Commissioning, inspection, maintenance

5692 580 GB

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