Viessmann Vitoladens 300-C Betriebsanleitung

Service instructions

for contractors

VIESMANN

Vitoladens 300-C

Type VC3, 12.9 to 28.9 kW

Oil condensing boiler

with integral boiler control unit

For applicability, see the last page

VITOLADENS 300-C

5692 774 GB 11/2009 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 774 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 774 GB

Commissioning, inspection, maintenance

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

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

Codes

Code 1.................................................................................................................. 37

Code 2.................................................................................................................. 40

Resetting codes to their delivered condition......................................................... 54

Service scans

Service level overview ......................................................................................... 55

Temperatures, boiler coding card and brief scans .............................................. 55

Checking outputs (relay test)................................................................................ 57

Scanning operating conditions and sensors ........................................................ 58

Troubleshooting

Fault display......................................................................................................... 60

Fault codes .......................................................................................................... 61

Repairs................................................................................................................. 68

Function description

Control unit........................................................................................................... 76

Control functions.................................................................................................. 77

Remote control DIP switches............................................................................... 83

Designs

Connection and wiring diagram – internal connections ....................................... 85

Parts lists............................................................................................................ 90

Commissioning/service reports........................................................................ 97

Specification....................................................................................................... 98

Certificates

Declaration of conformity...................................................................................... 99

Manufacturer's certificate according to the 1st BImSchV [Germany]................... 99

Keyword index.................................................................................................... 101

Index

5692 774 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. Checking all connections on the heating water side

for leaks

•3. Venting the boiler........................................................... 8

•4. Venting the heating system

• • 5. Draining the heating system (if required)..................... 9

•6. Filling the siphon or neutralising system (accessory)

with water........................................................................ 9

•7. Checking power supply connection

• • 8. Setting the time and date (if required).......................... 10

•9. Changing the language at the control unit................... 11

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

• • 11. Removing the front panel.............................................. 13

• • 12. Opening the boiler door................................................. 14

• • 13. Cleaning the heating surfaces....................................... 14

• • 14. Closing the boiler door.................................................. 17

•15. Cleaning the burner........................................................ 18

•16. Replacing the nozzle and checking or adjusting the

ignition electrodes.......................................................... 19

•17. Burner installation.......................................................... 20

• • 18. Cleaning and replacing the oil pump filter, if

required .......................................................................... 20

• • 19. Checking gaskets and thermal insulation

components.................................................................... 21

••• 20. Checking electrical connections for tightness

• • 21. Checking the condensate drain and cleaning the

siphon (if installed)......................................................... 23

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance

5692 774 GB

Commissioning steps

Inspection steps

Maintenance steps Page

• • 22. Checking the neutralising system (accessories)........ 23

• • 23. Checking the active charcoal filter (accessories)....... 23

••• 24. Checking the diaphragm expansion vessel and

system pressure

• • 25. Adjusting the standard burner settings....................... 23

• • 26. Adjusting the oil pressure and checking the vacuum 25

• • 27. Adjusting the air volume (static burner pressure)...... 26

• • 28. Fitting the front panel..................................................... 27

••• 29. Checking the function of safety valves

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

•31. Adjusting the heating curves........................................ 30

•32. Linking the control unit to the LON.............................. 33

•33. Instructing the system user........................................... 35

•34. Scanning and resetting the "Service" display............. 36

Commissioning, inspection, maintenance

Steps - commissioning, inspection and… (cont.)

5692 774 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 16.8 °dH (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. Remove front insulation shell A.

3. Open air vent valve B.

4. Fill the heating system at the fill

valve C in the heating return. (Mini-

mum system pressure 0.8 bar.)

5. Close air vent valve B when no

more air is being expelled.

6. Close boiler fill valve C.

Commissioning, inspection, maintenance

Further details regarding the individual steps

5692 774 GB

Venting the boiler

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

ing water side.

2. Remove front insulation shell A (if

already fitted).

3. Connect the drain hose on air vent

valve B with a drain.

4. Open valves B and C and vent

using mains pressure until no more

air noise is audible.

5. Close valves B and C and open

the heating water shut-off valves.

Commissioning, inspection, maintenance

Further details regarding the individual steps (cont.)

5692 774 GB

Draining the heating system (if required)

ADrain valve

Filling the siphon or neutralising system (accessory) with water

Commissioning, inspection, maintenance

Further details regarding the individual steps (cont.)

5692 774 GB

Pull the supply hose A (siphon or neu-

tralising system) from the boiler conden-

sate drain B and fill with a little water.

Setting the time and date (if required)

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 774 GB

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