Viessmann VITODENS 050-W Guida rapida

Installation and service

instructions

for contractors

VIESMANN

Vitodens 050-W

Type BPJD, 6.5 to 35.0 kW

Wall mounted gas condensing boiler

For natural gas and LPG

Gas Council Number: 47 819 31, 47 819 32

VITODENS 050-W

5675991 GB/en 11/2017 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 envi-

ronmental pollution.

Note

Details identified by the word "Note"

contain additional information.

Target group

These instructions are exclusively

intended for qualified contractors.

■ Work on gas installations may only

be carried out by a registered gas fit-

ter.

■ Work on electrical equipment may

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 to be observed

■ National installation regulations

■ Statutory regulations for the preven-

tion of accidents

■ Statutory regulations for environmen-

tal 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

aÖNORM, EN,

ÖVGW G K directives,

ÖVGW-TRF and ÖVE

cSEV, SUVA, SVGW, SVTI,

SWKI, VKF and EKAS guideline

1942: LPG, part 2

Safety instructions

5675991

Safety instructions for working on the system

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

supply, 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.

■ Wear suitable personal protective

equipment when carrying out any

work.

Danger

Hot surfaces can cause burns.

■ Before maintenance and serv-

ice work, switch OFF the

appliance and let it cool down.

■ Never touch hot surfaces on

the boiler, burner, flue system

or pipework.

!Please note

Electronic assemblies can be

damaged by electrostatic dis-

charge.

Prior to commencing 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 compro-

mise the safe operation of the

system.

Replace faulty components only

with genuine Viessmann spare

parts.

Auxiliary components, spare and

wearing parts

!Please note

Spare and wearing parts that

have not been tested together

with the system can compro-

mise its function. Installing non-

authorised components and

making non-approved modifica-

tions or conversions can com-

promise safety and may invalid-

ate our warranty.

For replacements, use only orig-

inal spare parts supplied or

approved by Viessmann.

Safety instructions

Safety instructions (cont.)

5675991

Safety instructions for operating the system

If you smell gas

Danger

Escaping gas can lead to explo-

sions which may result in seri-

ous injury.

■ Do not 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.

■ Evacuate any people from the

danger zone.

■ Notify your gas or electricity

supply utility from outside the

building.

■ Have the power supply to the

building shut off from a safe

place (outside the building).

If you smell flue gas

Danger

Flue gas can lead to life threat-

ening poisoning.

■ Shut down the heating sys-

tem.

■ Ventilate the installation site.

■ Close doors to living spaces

to prevent flue gases from

spreading.

What to do if water escapes from the

appliance

Danger

If water escapes from the appli-

ance there is a risk of electrocu-

tion.

Switch OFF the heating system

at the external isolator (e.g. fuse

box, domestic distribution

board).

Danger

If water escapes from the appli-

ance there is a risk of scalding.

Never touch hot heating water.

Condensate

Danger

Contact with condensate can be

harmful to health.

Never let condensate touch your

skin or eyes and do not swallow

it.

Flue systems and combustion air

Ensure that flue systems are clear and

cannot be sealed, for instance due to

accumulation of condensate or other

external causes.

Avoid continuous condensate disposal

with a wind protector.

Ensure an adequate supply of combus-

tion air.

Inform system users that subsequent

modifications to the building character-

istics are not permissible (e.g. cable/

pipework routing, cladding or parti-

tions).

Safety instructions

Safety instructions (cont.)

5675991

Danger

Leaking or blocked flue sys-

tems, or an inadequate supply

of combustion air can cause life

threatening poisoning from car-

bon monoxide in the flue gas.

Ensure the flue system is in

good working order. Vents for

supplying combustion air must

be non-sealable.

Extractors

Operating appliances that exhaust air

to the outside (extractor hoods, extrac-

tors, air conditioning units, etc.) can

create negative pressure. If the boiler is

operated at the same time, this can

lead to a reverse flow of flue gas.

Danger

The simultaneous operation of

the boiler and appliances that

exhausts air to the outside can

result in life threatening poison-

ing due to a reverse flow of flue

gas.

Fit an interlock circuit or take

suitable steps to ensure an ade-

quate supply of combustion air.

Safety instructions

Safety instructions (cont.)

5675991

Installation instructions

Information

Disposal of packaging.......................................................................................... 8

Symbols................................................................................................................ 9

Intended use......................................................................................................... 10

Product information.............................................................................................. 10

Preparing for installation................................................................................... 13

Installation sequence

Mounting the boiler and making connections....................................................... 17

Opening the programming unit............................................................................. 22

Electrical connections........................................................................................... 23

Service instructions

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance.......................................... 26

Further details regarding the individual steps....................................................... 27

Troubleshooting

Function sequence and possible faults................................................................ 50

Fault display......................................................................................................... 51

Repairs................................................................................................................. 56

Changing the gas type

Converting from LPG to natural gas..................................................................... 67

Control unit

Functions and operating conditions in weather-compensated mode................... 69

Designs

Connection and wiring diagrams.......................................................................... 71

Parts lists

Overview of assemblies....................................................................................... 76

Casing assembly.................................................................................................. 78

Heat cell assembly............................................................................................... 80

Burner assembly.................................................................................................. 82

Hydraulic assembly.............................................................................................. 84

Grundfos hydraulic assembly............................................................................... 86

Control unit assembly........................................................................................... 88

Miscellaneous assembly...................................................................................... 90

Index

5675991

Specification....................................................................................................... 91

Disposal

Final decommissioning and disposal.................................................................... 92

Certificates

Declaration of conformity...................................................................................... 93

Keyword index.................................................................................................... 95

Index

Index (cont.)

5675991

Please dispose of packaging waste in

line with statutory regulations.

DE: Use the disposal system organ-

ised by Viessmann.

AT: Use the ARA statutory disposal

system (Altstoff Recycling Austria

AG, licence number 5766).

CH: Packaging waste is disposed of

by the HVAC contractor.

Information

Disposal of packaging

5675991

Sym-

bol

Meaning

Reference to other document

containing further information

Step in a diagram:

The numbers correspond to

the order in which the steps

are carried out.

Warning of material losses and

environmental pollution

Live electrical area

Pay particular attention.

■ Component must audibly

click into place.

■ Acoustic signal

■ Fit new component.

■ In conjunction with a tool:

Clean the surface.

Dispose of component correct-

ly.

Dispose of component at a

suitable collection point. Do

not dispose of component in

domestic waste.

Information

Symbols

5675991

Installation

The appliance is intended solely for

installation and operation in sealed

unvented heating systems that comply

with EN 12828, with due attention paid

to the associated installation, service

and operating instructions. It is only

designed for heating up heating water

that is of potable water quality.

Intended use presupposes that a fixed

installation in conjunction with permissi-

ble, system-specific components has

been carried out.

Commercial or industrial usage for a

purpose other than heating the building

or DHW shall be deemed inappropriate.

Any usage beyond this must be

approved by the manufacturer in each

individual case.

Incorrect usage or operation of the

appliance (e.g. the appliance being

opened by the system user) is prohibi-

ted and will result in an exclusion of lia-

bility. Incorrect usage also occurs if the

components in the heating system are

modified from their intended use (e.g. if

the flue gas and ventilation air paths

are sealed).

Product information

Vitodens 050-W, type BPJD

Preset for operation with natural gas.

Conversion to LPG P requires a gas

conversion kit.

Gas Council No.

■ 29 kW combi: 47 819 31

■ 35 kW combi: 47 819 32

Conversion for other countries

The Vitodens 050-W may generally

only be delivered to countries listed on

the type plate. For deliveries to other

countries, approved contractors must

arrange individual approval on their

own initiative and in accordance with

the law of the country in question.

Product description

The Vitodens 050-W is available as a

gas condensing combi boiler with inte-

gral plate heat exchanger for DHW

heating. For the connection of heating

circuits and the DHW line, see

page 16 onwards.

The Vitodens 050-W is set up for oper-

ation with a constant boiler water tem-

perature.

The appliance is equipped with a

sealed unvented hydraulic system with

2 connections for the heating flow and

return and 2 connections for DHW

heating.

Information

Intended use

5675991

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