Viessmann Vitoladens 300-C Betriebsanleitung

VIESMANN

Service instructions

for contractors

Vitoladens 300-C

Type VC3, 12.9 to 28.9 kW

Oil fired condensing boiler

with integral boiler control unit

For applicability, see the last page

VITOLADENS 300-C

5692 745 GB 7/2007 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 745 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 745 GB

Commissioning, inspection, maintenance

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

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

Coding

Code 1........................................................................................................ 38

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

Resetting codes to their delivered condition ................................................ 56

Service scans

Service level overview ............................................................................... 57

Temperatures, boiler coding card and brief scans ....................................... 58

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

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

Troubleshooting

Fault display ............................................................................................... 63

Fault codes ................................................................................................ 64

Repairs ...................................................................................................... 71

Function description

Control unit................................................................................................. 79

Control functions ........................................................................................ 80

Remote control DIP switches ...................................................................... 86

Designs

Connection and wiring diagram –internal connections ................................ 88

Parts lists .................................................................................................. 93

Specification............................................................................................. 104

Certificates

Declaration of conformity ............................................................................ 105

Manufacturer's certificate according to the 1st BImSchV [Germany]............. 106

Keyword index .......................................................................................... 107

Index

5692 745 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. Checking all connections on the heating water

side for leaks

•03. Venting the boiler .................................................................. 8

•04. Venting the heating system

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

•06. Filling the siphon or neutralising system

(accessory) with water ........................................................ 10

•07. Checking the power supply connection

• • 08. Setting the time and date (if required)........................... 11

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

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

• • 11. Removing the front panel................................................... 14

• • 12. Adjusting the standard burner settings ....................... 14

• • 13. Adjusting the oil pressure and checking the

vacuum ..................................................................................... 16

• • 14. Adjusting the air volume (static burner pressure) . . . 17

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

•16. Replacing the nozzle and checking or adjusting

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

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

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

• • 18. Opening the boiler door...................................................... 21

• • 19. Cleaning the heating surfaces ......................................... 21

• • 20. Checking gaskets and thermal insulation

components ............................................................................ 24

• • 21. Closing the boiler door and fitting the front panel . . . 26

Steps - commissioning, inspection and maintenance

Commissioning, inspection, maintenance

5692 745 GB

Commissioning steps

Inspection steps

Maintenance steps Page

!!!



• • 22. Checking the condensate drain and cleaning the

siphon (if installed) .............................................................. 26

• • 23. Checking the neutralising system (accessories) ..... 26

• • 24. Checking the active charcoal filter (accessories) . . . . 27

••• 25. Checking the diaphragm expansion vessel and

system pressure

••• 26. Checking the burner (recording values on

page 102 of the commissioning/service report)

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

••• 28. Checking the tightness of electrical connections

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

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

•31. Linking the control unit to the LON ................................ 34

•32. Instructing the system user .............................................. 36

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

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

Commissioning, inspection, maintenance

5692 745 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/m

, 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 inlet pressure of the dia-

phragm expansion vessel.

2. Remove front insulation shell A.

3. Open air vent valve B.

4. Fill the heating system at the fill

valve Cin the heating return.

(Minimum system pressure

0.8 bar.)

5. Close air vent valve Bwhen no

more air is being expelled.

Further details regarding the individual steps

Commissioning, inspection, maintenance

5692 745 GB

6. Close boiler fill valve C.

Venting the boiler

1. Close the shut-off valves on the

heating water side.

2. Remove front insulation shell A(if

already fitted).

3. Connect the drain hose on air vent

valve Bwith a drain.

4. Open valves Band Cand vent

using mains pressure until no more

air noise is audible.

5. Close valves Band Cand open

the heating water shut-off valves.

Further details regarding the individual steps (cont.)

Commissioning, inspection, maintenance

5692 745 GB

Draining the heating system (if required)

ADrain valve

Further details regarding the individual steps (cont.)

Commissioning, inspection, maintenance

5692 745 GB

Filling the siphon or neutralising system (accessory) with

water

ASiphon BNeutralising system (accessories)

Pull the supply hose from the boiler

and fill with a little water.

Neutralising system operating instructions

Further details regarding the individual steps (cont.)

Commissioning, inspection, maintenance

5692 745 GB

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