Viessmann VITODENS 333 WS3A Bedienungsanleitung

VIESMANN

Installation instructions

for heating engineers

Vitodens 333

Type WS3A, 6.6 to 26.0 kW

Compact gas fired condensing boiler

natural gas and LPG version

VITODENS 333

5862 566 GB 3/2004 Dispose after installation

Please follow these safety instructions closely to prevent accidents and

material losses.

Safety instructions explained

!Important information

This symbol warns against the

risk of material losses and

environmental pollution.

Note

Details identified by the words "Note"

contain additional information.

Safety regulations

Installation, initial start-up, inspection,

maintenance and repairs must be car-

ried out by a competent person

(heating engineer/installation contrac-

tor).

Observe all current safety regulations

as defined by DIN, EN, DVGW, TRGI,

TRF, VDE or all locally applicable

standards.

See also the "safety instructions" in

the "Vitotec Technical Guide" folder.

Before working on the equipment/

heating system, isolate the mains

electrical supply (e.g. by removing a

separate mains fuse or by means of a

mains electrical isolator) and safe-

guard against unauthorised reconnec-

tion.

Close the main gas shut-off valve and

safeguard against unauthorised

reopening.

Electrical assemblies provided on site

must be type-approved.

Work on gas equipment

This must only be carried out by an

approved gas fitter.

Observe all commissioning work spe-

cified for gas installations to TRGI or

TRF and all local regulations.

Safety instructions

5862 566 GB

Preparing for installation

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

Preparations for boiler installation ............................................................... 5

Installation

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

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

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

Checking anode connection........................................................................ 9

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

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

&Routing connecting cables ....................................................................... 13

Closing control unit housing and inserting user interface ............................. 14

Front panel installation................................................................................ 15

Commissioning and adjustments................................................................. 15

Index

5862 566 GB

Vitodens 333, Type WS3A

Set up for operation with natural gas E.

The natural gas E version can be converted to natural gas LL or LPG P using a

conversion kit.

Product information

5862 566 GB

On-site preparations when using a connection set (accessory), see the

installation instructions of the connection set.

ACold water G¾"

BHeating flow G¾"

CGas connection G¾"

DHeating return G¾"

EDHW G¾"

FDHW circulation G1"

GDrain outlet kit (accessory)

HCable arrangement area

KWall clearance with connection

set (accessory)

LWall clearance with on-site con-

nection

Preparations for boiler installation

5862 566 GB

1. Prepare the primary connections.

Thoroughly flush the heating sys-

tem.

Note

Should an on-site diaphragm

expansion vessel be required,

install this into the heating return. If

no connection set (accessory) is

used, install the on-site fill tap into

the heating return.

2. Prepare the secondary connec-

tions. Install the safety assembly

(accessory or on-site provision) to

DIN 1988 [or local regulations] into

the cold water supply line.

3. Equip the DHW circulation pipe

with circulation pump, check valve

andtimeswitch.

4. Connect the condensate drain with

apipeventtothepublicsewer.

5. Prepare the gas connection

accordingtoTRGIorTRForall

local regulations.

6. Prepare the electrical connections.

&Mainscable:NYM-J3x1.5mm

fuse max. 16 A, 230 V~, 50 Hz.

&Accessory cables: NYM with the

required number of conductors

for the external connections.

&Allcablesinarea"H" should

protrude 2 000 mm from the wall.

Preparations for boiler installation (cont.)

5862 566 GB

Note

Connect the condensate drain and drain lines from the safety valves with a

slopeandapipeventtothepublicsewer.

AConnection set (accessory)

Installing the boiler and making all connections

5862 566 GB

Connect the balanced flue pipe. Flue gas system installation

instructions.

Gas connection

AGas connection

Conversion to other gas

types:

Conversion kit installation

instructions

Information regarding operation

with LPG

We recommend the installation of an

external safety solenoid valve when

installing the boiler in rooms below

ground level.

1. Carry out a leak test.

!Important information

Excessive test pressure

leadstodamagetotheboi-

ler and gas train.

Max. test pressure

150 mbar. If a higher pres-

sure is required for leak

tests, separate the boiler

and the gas train from the

mains gas supply (undo fit-

tings).

2. Purge the gas supply pipe.

Flue gas connection

5862 566 GB

AMagnesium anode BEarth cable

1. Removetheflangelidcover. 2. Check whether the earth cable is

connected on the magnesium

anode.

Checking anode connection

5862 566 GB

Opening the control unit housing

5862 566 GB

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