Viessmann Vitodens 300 Manuale utente

VIESMANN

Installation instructions

for heating engineers

Vitodens 300

Type WB3B, 4.2 to 35.0 kW

Wall mounted gas fired condensing boiler

Natural gas and LPG version

VITODENS 300

5862 872 GB 12/2005 Dispose after installation.

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 appliances must only

be carried out by a qualified gas fit-

ter.

&Work on electrical equipment must

only be carried out by a qualified

electrician.

Regulations

Observe the following when working

on this system

&all legal instructions regarding the

prevention of accidents,

&all legal instructions regarding

environmental protection,

&theCodeofPracticeofrelevant

trade associations,

&all current safety regulations as

defined by DIN, EN, DVGW, TRGI,

TRF, VDE and all locally applicable

standards.

Workingonthesystem

&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.

&When using gas as fuel, also close

the main gas shut‐off valve and

safeguard against unauthorised

reopening.

Safety instructions

5862 872 GB

Preparing the installation

Product information .................................................................................... 4

Preparing the installation ............................................................................ 5

&Preparing the boiler installation ................................................................ 5

Installation steps

Installing the boiler and making all connections ........................................... 7

Flue gas connection.................................................................................... 8

Condensate connection .............................................................................. 8

Gas connection .......................................................................................... 8

Opening the control unit housing................................................................. 10

Electrical connections................................................................................. 11

&Allocation of connections to plug 28 ......................................................... 14

&Routing connecting cables ....................................................................... 15

Closing the control unit casing and inserting the programming unit .............. 16

Front panel installation................................................................................ 17

Commissioning and adjustment .................................................................. 17

Index

5862 872 GB

Vitodens 300, WB3B

Rated output 13 and 19 kW:

Set up for operation with natural gas E and LL.

ForconversiontoLPGP(withoutconversionkit),seetheserviceinstructions.

Rated output 26 and 35 kW:

Set up for operation with natural gas E.

ForconversiontonaturalgasLLandLPGP(withconversionkit),seetheser-

vice instructions.

Conversion for other target countries

The Vitodens 300 should generally only be delivered to those countries speci-

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

tractor must arrange, on his own initiative, for an individual approval in

accordance with the law of the land.

Product information

5862 872 GB

Preparing the boiler installation

For on‐site preparation of gas, water and electrical connections, see

installation instructions, installation template or mounting frame.

AHeating flow Rp¾"

BDHW cylinder flow G¾"

CGas connection

DDHW cylinder return G¾"

EHeating return Rp¾"

FFill & drain valve

GCable entry

HDimension with DHW cylinder

below

KCondensate drain

Preparing the installation

5862 872 GB

Rated output range kW 4.2 ‐13 4.8 ‐19 6.6 ‐26 8.7 ‐35

a mm 450 450 480 480

b mm 360 360 380 380

Note

This boiler (protection level: IP X4 D)

is approved for installation in wet

rooms inside protection area 1

according to DIN VDE 0100, providing

the occurrence of hosed water can be

excluded.

Observe the requirements of DIN VDE

0100.

1. Prepare the water connections.

Flush the heating system thor-

oughly.

2. Prepare the gas connection

accordingtoTRGIorTRForall

local regulations.

3. Prepare the electrical connections.

&Power supply cable: NYM‐

J3x1.5mm

, fuse max. 16 A,

230 V~, 50 Hz.

&Accessory cables: NYM with the

required number of conductors

for the external connections.

&Allow all cables in area Gto pro-

trude1200mmfromthewall.

Preparing the installation (cont.)

5862 872 GB

Note

Quick‐acting air vent valve and connector for the expansion vessel (only for 26

and35kW)arepackedseparately.

AHeating flow

BDHW flow

CGas connection

DDHW return

EHeating return

FFill & drain valve

Installing the boiler and making all connections

5862 872 GB

Connect the balanced flue pipe. Flue gas system installation

instructions.

Condensate connection

Connect the condensate drain with a

slopeandapipeventtothepublic

sewer.

Gas connection

AGas connection

Notes regarding the operation with

LPG

We recommend the installation of an

external safety solenoid valve when

installing the boiler in rooms below

ground level.

Flue gas connection

5862 872 GB

1. Carry out a gas soundness test.

!Please note

Excessive test pressure

may damage the boiler and

the gas valve.

Max. test pressure 150

mbar. Where higher pres-

sure is required for leak

tests, separate the boiler

and the gas valves from the

mains gas supply pipe (undo

the fitting).

2. Vent the gas supply pipe.

Conversion to other gas

types:

Service instructions

Gas connection (cont.)

5862 872 GB

Opening the control unit housing

5862 872 GB

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