Viessmann VITODENS 333 Betriebsanleitung

VIESMANN

Service instructions

for heating engineers

Vitodens 333

Type WS3A

Compact gas fired condensing boiler

4.2 to 13 kW natural gas version

6.6 to 26 kW natural gas and LPG version

For applicability, see the last page

VITODENS 333

5692 619 GB 8/2005 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,

&theCodeofPracticeofrelevant

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.

&Closealldoorsleadingtothe

living space.

Safety instructions

5692 619 GB

Workingonthesystem

&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 619 GB

Initial start-up, inspection, maintenance

Steps –initial start-up, inspection and maintenance .................................... 5

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

Coding

Code 1........................................................................................................ 39

Code 2........................................................................................................ 41

Resetting codes to the delivered condition .................................................. 60

Service scans

Service level summary................................................................................ 61

Temperatures, boiler coding card and brief scans ....................................... 62

Checking outputs (relay test) ...................................................................... 65

Scanning operating conditions and sensors ................................................ 67

Troubleshooting

Fault display ............................................................................................... 69

Calling up fault codes from the fault memory (fault history) .......................... 71

Fault codes................................................................................................. 71

Repairs ...................................................................................................... 79

Function description

Constant temperature control unit ............................................................... 90

Weather–compensated control unit ............................................................. 92

Extensions for external connections............................................................ 95

Control functions ........................................................................................ 99

Remote control DIP switch .......................................................................... 105

Designs

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

Connection and wiring diagram –external connections ............................... 108

Parts lists .................................................................................................. 110

Commissioning/service reports............................................................... 117

Specification............................................................................................. 118

Certificates

Declaration of conformity ............................................................................ 119

Manufacturer's certificate according to the 1st BImSchV [Germany]............. 120

Keyword index .......................................................................................... 121

Index

5692 619 GB

For further information regarding individual steps, see the pages indicated.

Commissioning steps

Inspection steps

Maintenance steps Page

!!!



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

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

•3. Venting the heating system............................................... 8

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

••• 5. Checking all connections on the primary and DHW

side for leaks

•6. Checking the power supply connection

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

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

•8. Language selection (if required) - only for weather-

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

••• 9. Pivot down the control unit for commissioning and

maintenance work ................................................................ 10

••10. Checking the gas type......................................................... 11

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

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

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

•14. Setting the max. output....................................................... 15

•15. Checking the balanced flue system soundness

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

•• 16. Removing the burner and checking the burner

gasket (replace gasket every two years)...................... 17

•• 17. Checking the burner gauze assembly........................... 18

•• 18. Checking and adjusting the ignition and ionisation

electrodes ................................................................................ 19

•• 19. Cleaning the combustion chamber/heating

surfaces and fitting the burner ........................................ 20

Steps –initial start-up, inspection and maintenance

Initial start-up, inspection, maintenance

5692 619 GB

Commissioning steps

Inspection steps

Maintenance steps Page

!!!



•• 20. Checking the condensate drain and cleaning the

siphon........................................................................................ 21

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

•22. Testing the anode earth current with an anode

tester.......................................................................................... 21

•23. Cleaning the DHW cylinder ............................................... 22

•24. Checking and replacing the magnesium anode (if

required)................................................................................... 22

•25. Returning the DHW cylinder to use................................ 23

••• 26. Checking the diaphragm expansion vessel and

system pressure

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

••• 28. Checking the tightness of electrical connections

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

operating pressure............................................................... 23

••• 30. Flue gas emissions test...................................................... 24

••• 31. Checking the ionisation current...................................... 26

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

required)

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

•34. Adjusting the heating curves (only for control

units for weather-compensated operation)................. 32

•35. Connecting the control unit to the LON system

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

•36. Implementing a user check (in conjunction with

the LON system with a weather-compensated

control unit)............................................................................. 37

•37. Instructing the system user .............................................. 37

•38. Scanning and resetting the "maintenance" display 38

Steps –initial start-up, inspection and . . . (cont.)

Initial start-up, inspection, maintenance

5692 619 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 with water.

&Only use fill water of potable quality.

&Fill water with a water hardness in excess of 3.58 mmol/l must be sof-

tened, e.g. with the small softening system for heating water (see the

Vitoset pricelist).

&An anti-freeze additive suitable for heating systems can be mixed with

the fill water.

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 fill

valve in 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

changeover valve will still be in its

centre position, and the system will

be completely filled.

4. If the control unit had already been

switched ON before filling began:

Start the control unit and activate

thefillprogramviacoding"2F:2".

Note

To call up coding level 1 and for

setting the coding address, see

page 39.

For function and details of the fill

program, see page 100.

Whilst the fill program runs, the dis-

play shows "bF" (Vitotronic 100) or

"Filling" (Vitotronic 200).

5. Close the boiler fill & drain valve.

6. Set code "2F:0".

Further details regarding the individual steps

Initial start-up, inspection, maintenance

5692 619 GB

Venting the boiler

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

mary side.

2. Connect the drain hose on valve

Awith a drain outlet.

3. Open valve Aandfillvalveinthe

heating return and vent at mains

pressure, until no sound of escap-

ingaircanbeheard.

4. Close valve Aand fill valve in the

heating return and open the pri-

mary shut-off valves.

Venting the heating system

1. Close the gas shut-off valve and

switch ON the control unit.

2. Activate the venting program via

code "2F:1".

Note

To call up coding level 1 and for

setting the coding address, see

page 39.

For the function and sequence of

the venting program, see page 100.

Whilst the venting program runs,

the display shows "EL"

(Vitotronic 100) or "Venting"

(Vitotronic 200).

3. Check the system pressure.

Further details regarding the individual steps (cont.)

Initial start-up, inspection, maintenance

5692 619 GB

Filling the siphon with water

1. Remove the retaining clip and

siphon A.

2. Fillthesiphonwithwater.

3. Fit the siphon Aand secure with

the retaining clip.

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

compensated control units

Note

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

to reset the time and date, if thetimeflashesinthedisplay.

Press the following keys:

1. a/bfor the current time.

2. dto confirm; "Date"isdis-

played.

3. a/bfor the current date.

4. dto confirm.

Language selection (if required) - only for weather-compen-

sated control units

Press the following keys:

1. c"Select a heating circuit"will

be displayed.

2. dto confirm; wait approx. 4 s.

3. cPress again.

4. bfor the required language.

5. dto confirm.

Further details regarding the individual steps (cont.)

Initial start-up, inspection, maintenance

5692 619 GB

Pivot down the control unit for commissioning and mainte-

nance work

AControl unit

BClosures

CFlap

DRetaining frame

1. Open flap C.

2. Release side closures Band pivot

control unit Aforward.

3. Release the side screws and pivot

control unit Adown with its retain-

ing frame D.

Further details regarding the individual steps (cont.)

Initial start-up, inspection, maintenance

5692 619 GB

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