Viessmann Vitoplus 300 Istruzioni operative

VIESMANN

Service instructions

for heating engineers

Vitoplus 300

Type VP3A, 12.9/19.3 kW, 16.1/23.5 kW

Wall mounted oil fired condensing boiler

for the combustion of low sulphur fuel oil DIN 51603-EL-1

with integral boiler control unit

For applicability, see the last page

VITOPLUS 300

5692 536 GB 7/2005 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,

&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 536 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 536 GB

Initial start-up, inspection, maintenance

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

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

Coding

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

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

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

Service scans

Service level overview ................................................................................ 61

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

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

Scanning operating conditions and sensors ................................................ 64

Troubleshooting

Fault display ............................................................................................... 67

Calling up fault codes from the fault memory (fault history) .......................... 68

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

Repairs ...................................................................................................... 75

Function description

Control ...................................................................................................... 85

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

Control functions ........................................................................................ 91

Remote control DIP switch .......................................................................... 97

Designs

Connection and wiring diagrams –internal connections .............................. 98

Connection and wiring diagrams –external connections.............................. 99

Parts lists .................................................................................................. 101

Specification............................................................................................. 114

Certificates

Declaration of conformity ............................................................................ 115

Manufacturer's certificate according to the 1st BImSchV [Germany]............. 116

Keyword index .......................................................................................... 117

Index

5692 536 GB

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

Commissioning steps

Inspection steps

Maintenance steps Page

!!!



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

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

•03. Venting the heating system............................................... 9

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

•05. Checking the power supply connection

• • 06. Setting the time and date (if required)........................... 9

•07. Changing the language at the control unit .................. 10

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

• • 09. Adjusting the standard burner settings ....................... 11

• • 10. Adjusting the oil pressure and checking the

vacuum ..................................................................................... 13

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

• • 12. Cleaning and testing the flame monitor ....................... 16

•13. Cleaning the burner ............................................................. 17

•14. Adjusting or replacing the nozzle and checking the

ignition electrodes................................................................ 18

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

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

• • 16. Checking the heating surfaces for contamination . . . 21

• • 17. Cleaning the heating surfaces ......................................... 22

• • 18. Checking the condensate drain and cleaning the

siphon........................................................................................ 23

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

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

••• 21. Checking the diaphragm expansion vessel and

system pressure

Steps –initial start-up, inspection and maintenance

Initial start-up, inspection, maintenance

5692 536 GB

Commissioning steps

Inspection steps

Maintenance steps Page

!!!



••• 22. Checking all connections on the primary side for

leaks

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

108 of the commissioning report)

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

••• 25. Checking the tightness of electrical connections

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

•27. Integrating the control unit into the LON system...... 30

•28. Implementing a user check (in conjunction with

the LON system) .................................................................... 31

•29. Adjusting heating curves................................................... 32

•30. Instructing the system user .............................................. 36

•31. Scanning and resetting the "Maintenance" display 36

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

Initial start-up, inspection, maintenance

5692 536 GB

Filling the heating system

1. Check the inlet pressure of the dia-

phragm expansion vessel.

2. !Please note

Unsuitable fill water

increases the level of depos-

its and corrosion and may

lead to boiler damage.

&Thoroughly flush the entire

heating system prior to fill-

ing it with water.

&Only use fill water of pota-

ble quality.

&Soften fill water harder

than 3.58 mmol/l.

&An anti-freeze additive sui-

table for heating systems

can be added to the fill

water.

Drain the heating system via boiler

fill & drain valve A. (minimum sys-

tem 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

central position, and the system will

be completely filled.

3. If the control unit had already been

switched ON before filling began:

Start the control unit and in code 1,

set coding address "2F:2" (see

page 38).

The display shows "Filling"

The diverter valve is in its central

position.

Further details regarding the individual steps

Initial start-up, inspection, maintenance

5692 536 GB

4. Continue to fill the system.

5. Close boiler fill & drain valve A.

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 primary shut-off valves.

Further details regarding the individual steps (cont.)

Initial start-up, inspection, maintenance

5692 536 GB

Venting the heating system

1. Start the control unit.

2. Activate the venting program via

coding address "2F:1".

Note

To call up code 1 and for setting the

coding address, see page 38.

For function and sequence of the

venting program, see page 92.

When the venting program is

enabled, the display shows

"Venting".

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)

Note

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

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

1. Set the correct time with a/b.2. Confirm with d.

Further details regarding the individual steps (cont.)

Initial start-up, inspection, maintenance

5692 536 GB

3. Set the current date with a/b.4. Confirm with d.

Changing the language at the control unit

1. Press c.

The display shows "Select heating

circuit".

2. Press d.

3. After approx. 4 s press c.

4. Select the required language with

5. Confirm with d.

Function sequence and possible faults

For further details regarding faults, see page 68.

Display screen Measures

Control unit is-

sues heat de-

mand

No Increase set

value and ensure

heat is drawn off

Yes

Oil pre-heating

starts No

after approx. 10

min

Check the oil pre-

heater, cables

and plug-in con-

nections

Fault

Yes

The fan starts

after max. 10 min

No Fault Check the oil pre-

heater, fan,

cables and plug-

in connections

(the oil preheater

has not switched

through; the tem-

perature is not

achieved)

Further details regarding the individual steps (cont.)

Initial start-up, inspection, maintenance

5692 536 GB

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