Viessmann VITODENS 343-F WS4A Guide rapide

VIESMANN

Installation and service

instructions

for contractors

Vitodens 343-F

Type WS4A

Compact Energy Tower with a gas fired condensing boiler as compact model

Natural gas and LPG version

(GC no) 47-819-08

For applicability, see the last page

VITODENS 343-F

5592 883 GB 8/2007 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

5592 883 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

5592 883 GB

Installation instructions

Preparing for installation

Product information .................................................................................... 6

Handling..................................................................................................... 6

Positioning ................................................................................................. 6

Clearance dimensions ................................................................................ 7

On site connections .................................................................................... 8

Preparing the installation of the compact boiler ........................................... 9

Installation sequence

Fitting the connections................................................................................ 14

Electrical connections................................................................................. 17

Service instructions

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance ................................... 21

Further details regarding the individual steps .............................................. 23

Coding

Code 1........................................................................................................ 66

Code 2........................................................................................................ 68

Resetting codes to their delivered condition ................................................ 84

Service scans

Service level overview ............................................................................... 85

Temperatures, boiler coding card and brief scans ....................................... 86

Checking outputs (relay test) ...................................................................... 88

Scanning operating conditions and sensors ................................................ 89

Troubleshooting

Fault display ............................................................................................... 91

Fault codes................................................................................................. 92

Repairs ...................................................................................................... 99

Function description

Vitotronic 200, type HO1 ............................................................................. 114

Extensions for external connections (accessories) ...................................... 117

Control functions ........................................................................................ 120

Remote control DIP switches ...................................................................... 126

Electronic combustion control unit............................................................... 127

Designs

Connection and wiring diagram –internal connections I............................... 129

Index

5592 883 GB

Connection and wiring diagram –internal connections II.............................. 131

Connection and wiring diagrams –external connections.............................. 133

Parts lists .................................................................................................. 135

Commissioning/service reports ............................................................... 143

Specification............................................................................................. 144

Certificates

Declaration of conformity ............................................................................ 146

Manufacturer's certificate according to the 1st BImSchV [Germany]............. 147

Keyword index .......................................................................................... 148

Index (cont.)

Index

5592 883 GB

Vitodens 343-F, WS4A

Set up for operation with natural gas.

May be converted to LPG.

The Vitodens 343-F should generally only be delivered to those countries speci-

fied on the type plate. For deliveries to alternative countries, an approved con-

tractor, on his own initiative, must arrange individual approval in accordance

with the law of the land.

Handling

To protect the equipment, transport

the system inside its crate, where

possible. Whilst handling the device,

leave the pallet beneath the unit,

where possible.

!Please note

To avoid equipment damage

whilst handling the device with-

out its crate or pallet, never

place the device

on its front or side panels or

apply loads to these areas.

Height of unit when tilted

&With pallet 2395 mm

&Without pallet 2085 mm

Positioning

Installation room requirements

Required room height: min. 2400 mm.

Total weight incl. DHW fill: 495 kg. !Please note

To prevent building damage,

observe the permissible

floor loading.

Product information

Preparing for installation

5592 883 GB

All measurements in mm. If appliance

is fitted in a cupboard additional

space for the DHW expansion vessel

(see G3 instructions) and an approx.

40l solar expansion vessel have to be

considered.

Plan view

AT&P valve drain pipe

BHydraulic connections

CCable entry

DRequired clearance for the T&P

valve drain (either on the left or on

the right)

ERequired clearance for removing

the front panel (also maintain this

clearance when fitting the facia

frame)

FBalanced flue connection

GGas connection

Clearance dimensions

Preparing for installation

5592 883 GB

Installation

AVitodens dimensions

BArea for on-site hydraulic connec-

tions

&Compulsory with connection

panel

&Recommendation without con-

nection panel

CCondensate drain

DGas connection

ETop edge –finished floor

FCable entry

Allow all cables/leads to protrude

approx. 2000 mm from the wall

On site connections

Preparing for installation

5592 883 GB

Removing the front panels and fitting the quick acting air

vent valve

1. Position the compact boiler at a

distance of approx. 500 mm from

the on-site drain connection.

2. Pull the lower front panel at its

upper edge forward and lift out

upwards.

Preparing the installation of the compact boiler

Preparing for installation

5592 883 GB

Installation

3. Pull the front panel at its upper

edge forward and lift out upwards.

4. Remove the plugs from the top of

the compact boiler and insert the

quick acting air vent valve (secured

to the top of the boiler).

Preparing the installation of the compact boiler (cont.)

Preparing for installation

5592 883 GB

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