Viessmann Vitopend 100-W Istruzioni operative

Installation and service

instructions

for contractors

VIESMANN

Vitopend 100-W

Type WH1D, 10.5 to 24 kW and 13.5 to 30 kW

Gas system and combi boilers

For open flue operation

Natural gas and LPG version

For applicability, see the last page

VITOPEND 100-W

5848 649 GB 10/2013 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

■ 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

aÖNORM, EN, ÖVGW-TR Gas,

ÖVGW-TRF and ÖVE

cSEV, SUVA, SVGW, SVTI,

SWKI, VKF and EKAS guideline

1942: LPG, part 2

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

supplier and your local heating

contractor from outside the

building.

■ Shut off the electricity supply to

the building from a safe place

(outside the building).

Safety instructions

5848 649 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

Leaking or blocked flue systems,

or an insufficient supply of com-

bustion air can cause life threat-

ening poisoning from carbon

monoxide in the flue gas.

Ensure the flue system is in

proper working order. Apertures

for supplying combustion air

must be non-closable.

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.

Danger

Hot surfaces can cause burns.

■ Before maintenance or service

work, switch OFF the appli-

ance 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.

Before beginning work, touch

earthed objects, such as heating

or water pipes, to discharge static

loads.

Safety instructions

Safety instructions (cont.)

5848 649 GB

Repair work

!Please note

Repairing components that fulfil a

safety function can compromise

the safe operation of the sys-

tem.

Faulty components must be

replaced with original 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 compromise

its function. Installing non-author-

ised components and making

non-approved modifications or

conversions can compromise

safety and may invalidate the

warranty.

For replacements, use only orig-

inal spare parts supplied or

approved by Viessmann.

Safety instructions

Safety instructions (cont.)

5848 649 GB

Installation instructions

Preparing for installation................................................................................... 7

Installation sequence

Mounting the boiler and making connections....................................................... 9

Flue gas connection............................................................................................. 11

Gas connection.................................................................................................... 12

Opening the control unit enclosure....................................................................... 13

Electrical connections........................................................................................... 14

Service instructions

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance.......................................... 17

Further details regarding the individual steps....................................................... 18

Troubleshooting

Function sequence and possible faults................................................................ 37

Fault indicators on the display.............................................................................. 38

Repairs................................................................................................................. 40

Function description

Control and display elements............................................................................... 46

Heating mode....................................................................................................... 46

DHW heating........................................................................................................ 46

Extension for external connections (accessory)................................................... 47

Designs

Connection and wiring diagram............................................................................ 48

Parts lists

Ordering parts...................................................................................................... 50

Overview of the assemblies................................................................................. 51

Casing assembly.................................................................................................. 52

Heat cell assembly............................................................................................... 53

Burner assembly.................................................................................................. 55

Hydraulic assembly.............................................................................................. 56

Hydraulic assembly, system boiler....................................................................... 58

Hydraulic assembly, combi boiler......................................................................... 60

Control unit assembly........................................................................................... 62

Miscellaneous assembly...................................................................................... 64

Commissioning/service reports........................................................................ 65

Index

5848 649 GB

Specification....................................................................................................... 66

Certificates

Declaration of Conformity for the Vitopend 100-W............................................... 68

Keyword index.................................................................................................... 69

Index

Index (cont.)

5848 649 GB

Vitopend 100-W, type WH1D

Set up for operation with natural gas E.

May be converted to alternative gas

types with a conversion kit.

The Vitopend 100-W must only be deliv-

ered to the countries specified on the

type plate. For deliveries to alternative

countries, approved contractors must

arrange individual approval on their own

initiative and in accordance with the law

of the land.

Intended use

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. It is only designed

for the heating of water that is of potable

water quality.

Intended usage presupposes that a fixed

installation in conjunction with permissi-

ble, system-specific components has

been carried out.

Commercial or industrial usage for a pur-

pose other than heating the building or

DHW does not comply with regulations.

Any usage beyond this must be

approved by the manufacturer for the

individual case.

Incorrect usage or operation of the appli-

ance (e.g. the appliance being opened

by the system user) is prohibited and

results in an exclusion of liability. Incor-

rect usage also occurs if the components

in the heating system are modified from

their intended function (e.g. if the flue

gas and ventilation air paths are

sealed).

Preparing for installation

5848 649 GB

Installation

Cold water installation

ACold water connection, boiler

BDrain outlet

CVisible discharge pipe outlet point

DSafety valve

ENon-return valve

FShut-off valve

GCold water

HSafety assembly

A safety assembly H to DIN 1988 and

EN 806 is required if the mains water

supply pressure exceeds 10 bar (1.0

MPa), and no DHW pressure reducing

valve is installed (to DIN 4753).

Only use a non-return valve or a com-

bined shut-off and non-return valve in

conjunction with a safety valve.

If the safety valve is used, the cold water

shut-off valve on the boiler must not be

shut off.

Remove the toggle on the cold water

shut-off valve (if installed) to prevent it

being shut off manually.

Shock arrestor

If draw-off points that could cause pres-

sure peaks (water hammer/shock) are

connected to the same pipework as the

boiler (such as pressure washers, wash-

ing machines or dishwashers), we would

recommend the installation of a shock

arrestor near the source of such pres-

sure shocks.

g: Fit a small domestic expansion ves-

sel if water hammer occurs.

Preparing for installation

Preparing for installation (cont.)

5848 649 GB

!Please note

To prevent appliance damage,

connect all pipework free of load

and torque stress.

Note

Prepare the gas, water and power con-

nections using installation template A

supplied.

≥ 350

Ø10

AInstallation template

Installation sequence

Mounting the boiler and making connections

5848 649 GB

Installation

Installation sequence

Mounting the boiler and making connections (cont.)

5848 649 GB

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