Viessmann VITORADIAL 300-T Mode d'emploi

Service instructions

for contractors

VIESMANN

Vitoradial 300-T

Type VR3, 101 to 335 kW

Condensing boiler with heat exchanger

For applicability, see the last page

VITORADIAL 300-T

5692 820 GB 3/2013 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 inten-

ded for qualified contractors.

■ Work on gas installations must only be

carried out by a registered 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:

■ Statutory regulations regarding the

prevention of accidents

■ Statutory regulations regarding envi-

ronmental protection

■ Codes of practice of the 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), Build-

ing Regulations (Northern Ireland),

– 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.

■ Do not smoke. Prevent naked

flames and sparks. Do not

switch lights or electrical appli-

ances on or off.

■ Close the gas shut-off valve.

■ Open windows and doors.

■ Evacuate any people from the

danger zone.

■ Notify your gas or electricity

supply utility from outside the

building.

■ Shut off the electricity supply to

the building from a safe place

(outside the building).

Safety instructions

5692 820 GB

If you smell flue gas

Danger

Flue gas can lead to life-threat-

ening poisoning.

■ Shut down the heating system.

■ Ventilate the installation site.

■ Close all doors in the living

space.

Flue systems and combustion air

Ensure that flue systems are clear and

cannot be sealed, for instance due to

accumulation of condensate or other

causes. Ensure a sufficient supply of

combustion air.

Instruct system users that subsequent

modifications to the building characteris-

tics are not permissible (e.g. cable/pipe-

work routing, cladding or partitions).

Danger

Life-threatening poisoning

caused by carbon monoxide in

the flue gas occurs as a result of

leaking or blocked flue systems

or an insufficient supply of com-

bustion air.

Ensure the flue system is in

proper working order. It must not

be possible to close apertures for

interconnected combustion air

supply.

Extractors

Operating appliances that extract air to

the outside (cooker hoods, extractors, air

conditioning units, etc.) can create neg-

ative pressure. If the boiler is operated at

the same time, this can lead to reverse

flow of the flue gas.

Danger

The simultaneous operation of

the boiler and appliances that

extract air to the outside can

result in life threatening poison-

ing due to reverse flow of the flue

gas.

Fit an interlock circuit or take suit-

able steps to ensure a sufficient

supply of combustion air.

Working on the system

■ Where gas is used as the fuel, close

the main gas shut-off valve and safe-

guard it against unintentional reopen-

ing.

■ Isolate the system from the power sup-

ply (e.g. by removing the separate fuse

or by means of a mains isolator) and

check that it is no longer 'live'.

■ Safeguard the system against recon-

nection.

!Please note

Electronic assemblies can be

damaged by electrostatic dis-

charge.

Prior to commencing any work,

touch earthed objects, such as

heating or water pipes to dis-

charge static loads.

Repair work

!Please note

Repairing components that fulfil a

safety function can compromise

the safe operation of your sys-

tem.

Defective components must be

replaced with genuine

Viessmann spare parts.

Safety instructions

Safety instructions (cont.)

5692 820 GB

Auxiliary components, spare and

wearing parts

!Please note

Spare and wearing parts that

have not been tested together

with the system can compromise

its function. Installing non-author-

ised components and making

non-approved modifications or

conversions can compromise

safety and may invalidate our

warranty.

For replacements, use only orig-

inal spare parts supplied or

approved by Viessmann.

Safety instructions

Safety instructions (cont.)

5692 820 GB

Product information

Intended use......................................................................................................... 6

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance.......................................... 7

Further details regarding the individual steps....................................................... 9

Parts lists

Parts list, boiler..................................................................................................... 27

Parts list, heat exchanger..................................................................................... 30

Water quality

Water quality requirements.................................................................................. 33

Commissioning/service reports........................................................................ 37

Specification....................................................................................................... 38

Certificates

Declaration of conformity...................................................................................... 39

Manufacturer's certificate according to the 1st BImSchV [Germany]................... 40

Keyword index.................................................................................................... 41

Index

5692 820 GB

The appliance is only intended to be

installed and operated in sealed unven-

ted heating systems that comply with

EN 12828, with due attention paid to the

associated installation, service and

operating instructions as well as the

details in the datasheet.

It is only designed for the heating up of

heating water.

Commercial or industrial usage for a pur-

pose other than the heating up of heating

water shall be deemed inappropriate.

Intended use presupposes that a fixed

installation in conjunction with permissi-

ble components designed for this pur-

pose has been carried out.

Every other use will be deemed to be

inappropriate. Any resulting losses are

excluded from the manufacturer's liabil-

ity.

Any usage beyond this must be

approved by the manufacturer for the

individual case.

Intended use also includes the adher-

ence to maintenance and inspection

intervals.

Product information

Intended use

5692 820 GB

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

Commissioning steps

Inspection steps

Maintenance steps Page

•1. Matching the settings of the boiler control unit.......... 9

•2. Checking the connections of the neutralising system

and filling with neutralising agent

••• 3. Commissioning the system........................................... 9

•4. Checking the burner adjustment................................... 10

• • 5. Shutting down the system............................................. 11

• • 6. Opening the boiler door................................................. 11

•7. Cleaning the internal pipes and heating surface......... 12

••• 8. Checking all gaskets and packing cords on the flue

gas side

• • 9. Checking the thermal insulation components on the

boiler door

•10. Inserting the internal pipes............................................ 13

• • 11. Fitting the boiler door..................................................... 14

••• 12. Checking connections and sensor well for leaks on

the heating water side

••• 13. Checking the function of the safety equipment........... 15

••• 14. Checking the expansion vessel and system pressure 15

••• 15. Checking the firm seating of electrical plug-in

connections and cable grommets

••• 16. Checking the heat exchanger gasket........................... 17

• • 17. Cleaning the flue outlet and heat exchanger............... 21

• • 18. Checking the water quality............................................ 22

• • 19. Checking the neutralising system as per the

manufacturer's instructions and replacing used

neutralising agent

• • 20. Cleaning the sight glass in the boiler door.................. 24

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance

5692 820 GB

Commissioning steps

Inspection steps

Maintenance steps Page

••• 21. Checking the mixer for ease of operation and

tightness.......................................................................... 24

••• 22. Checking the function of the return temperature

raising facility (if installed)

••• 23. Checking the installation room ventilation

••• 24. Checking the flue pipe and all connections from the

heat exchanger to the flue system for tightness

• • 25. Restarting the system

• • 26. Adjusting the burner...................................................... 25

•27. Instructing the system user........................................... 26

•28. Operating and service instructions.............................. 26

Commissioning, inspection, maintenance

Steps - commissioning, inspection and… (cont.)

5692 820 GB

Matching the settings of the boiler control unit

Make the settings according to the infor-

mation in chapter "Additional informa-

tion, coding" in the control unit service

instructions.

Commissioning the system

Operating and service instruc-

tions for the control unit and the

burner

01. Check that the internal pipes are

fully pushed into the hot gas flues

(see chapter "Inserting the internal

pipes"); open the boiler door for

this.

02. Check that the installation room

vent is open.

03. Fill the heating system with water

and vent the system.

Permissible operating pressure:

4 bar (0.4 MPa)

!Please note

Scaling may result if the sys-

tem is not operated with fully

softened heating water.

Operate boilers only with

softened water.

Observe the instructions in

chapter "Water quality

requirements".

04. Enter the amount of fill water and

water hardness into the table in

chapter "Checking the water qual-

ity".

05. Check the system pressure.

06. Check the oil level or the gas supply

pressure.

07. Open the flue gas damper (if instal-

led).

08. Check that the cleaning aperture on

the flue outlet is closed.

09. Open the shut-off valves in the oil or

gas line.

10. Switch ON the mains isolator, the

switch for the heating circuit pump

and the burner ON/OFF switch in

this order (observe the burner man-

ufacturer's instructions).

Commissioning, inspection, maintenance

Further details regarding the individual steps

5692 820 GB

11. When heating the system from cold

(also when restarting after mainte-

nance and cleaning work), prevent

all heat supply to heat consumers,

in order to clear the dew point range

as quickly as possible.

!Please note

During boiler heat-up,

unpleasant fumes and

odours can result from out-

gassing from the thermal

insulation, the heating block

and the paint.

Vent the room during com-

missioning.

12. After the flow temperature has been

reached, switch ON the heat con-

sumers in sequence and change the

burner over to automatic mode.

!Please note

When testing the flue gas for

CO, internal gases being

expelled from the heating

block can cause higher val-

ues.

Continue to operate the

boiler until a clear decline

can be recognised.

13. Check all gaskets and plugs, and

retighten if necessary.

14. Check the boiler door and cleaning

cover after approx. 50 hours run and

retighten all screws.

Danger

Opening the connections on the

heating water side whilst the

boiler is under pressure can

result in injuries.

First depressurise the boiler.

Only drain the boiler with a suc-

tion pump if the air vent valve is

open.

Checking the burner adjustment

Burner service instructions

Commissioning, inspection, maintenance

Further details regarding the individual steps (cont.)

5692 820 GB

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