Viessmann Vitodens 300 Bedienungsanleitung
VIESMANN
Installation instructions
for contractors
Vitodens 300
Type WB3A,49and66kW
Wall mounted gas fired condensing boiler
Natural gas and LPG version
VITODENS 300
5862 570 GB 10/2006 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
2
5862 570 GB
Preparing for installation
Product information .................................................................................... 4
Preparing for installation ............................................................................. 5
&Preparing the boiler installation ................................................................ 5
Installation sequence
Installing the boiler and making all connections ........................................... 7
&Wall mounting bracket installation ............................................................ 7
&Hanging the boiler into the wall mounting bracket ..................................... 8
Heating water (primary) connection............................................................. 9
Flue connection .......................................................................................... 9
Condensate connection .............................................................................. 9
Gas connection .......................................................................................... 10
Opening the control unit enclosure .............................................................. 11
Electrical connections................................................................................. 12
&Routing connecting cables ....................................................................... 14
Closing the control unit enclosure and inserting the programming unit ......... 15
Front panel installation................................................................................ 16
Commissioning and adjustment .................................................................. 16
Index
3
5862 570 GB
Vitodens 300, WB3A
Set up for operation with natural gas E or LPG P.
The natural gas E version can be converted to natural gas LL using a conver-
sion kit.
TheLPGPversioncanbeconvertedtonaturalgasEorLLusingaconversion
kit.
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
4
5862 570 GB
Preparing the boiler installation
AHeating flow G 1½"
BSafety valve
CCylinder flow G 1½"
DGas connection
ECylinder return G 1½"
FHeating return G 1½"
GExpansion vessel G 1"
HCable entry
KRecommended dimension
LCondensate drain
Preparing for installation
5
5862 570 GB
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
accordingtoTRGIorTRF[orlocal
regulations].
3. Prepare the electrical connections.
&Power supply cable: NYM-
J3x1.5mm
2
, fuse max. 16 A,
230 V~.
&Accessory cables: NYM with the
required number of conductors
for the external connections.
&Allow all cables in area "H"to
protrude 1200 mm from the wall.
Preparing for installation (cont.)
6
5862 570 GB
Wall mounting bracket installation
Note
The enclosed screws and rawl plugs
are only suitable for concrete. For
other construction materials, use fix-
ings that are suitable for 110 kg loads.
AReference point: boiler top edge
BInstallation template (included
with the boiler)
CTopedgefinishedfloor
DRecommendation
Installing the boiler and making all connections
7
5862 570 GB
Hanging the boiler into the wall mounting bracket
Installing the boiler and making all connections (cont.)
8
5862 570 GB
AHeating flow
BDHW flow
CGas connection
DDHW return
EHeating return
FExpansion vessel
Connect the boiler to the on-site pipe-
work.
Flue connection
Connect the balanced flue pipe. Flue gas system installation
instructions.
Condensate connection
Connect the condensate drain with a
slopeandapipeventtothepublic
sewer.
Heating water (primary) connection
9
5862 570 GB
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.
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
gas supply pipe (undo the
fitting).
2. Vent the gas supply pipe.
Conversion to other gas
types:
Conversion kit installation
instructions
Gas connection
10
5862 570 GB
Andere Handbücher für Vitodens 300
7
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