Viessmann Vitodens 300 User manual

Installation instructions VIESMANN
for heating engineers
Vitodens 300
Type WB3A, 6.6 to 35.0 kW
Gas fired wall mounted condensing boiler
Natural gas and LPG version
VITODENS 300
5862 512 GB 2/2004 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 (heat-
ing engineer/installation contractor).
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
2
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Preparing for installation
Product information .................................................................................... 4
Preparations for boiler installation ............................................................... 5
Installation
Installing the boiler and making all connections ........................................... 7
Flue gas connection.................................................................................... 8
Condensate connection .............................................................................. 8
Gas 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
3
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Vitodens 300, Type WB3A
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
4
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For on-site preparation of gas, water and electrical connections, see
installation instructions, installation template or mounting frame.
AHeating flow Rp¾"
BDHW Rp½" (gas fired combination
boiler)
DHW flow G¾" (gas fired boiler)
CGas connection
DCold water Rp½" (gas fired combi-
nation boiler)
DHW return G¾" (gas fired boiler)
EHeating return Rp¾"
FFill & drain valve
GCable arrangement area
HDimension for installation with
DHW cylinder below the boiler.
KExpansion vessel connection G¾"
LCondensate drain
Preparations for boiler installation
5
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1. Prepare the water connections.
Thoroughly flush the heating sys-
tem.
2. Prepare the gas connection
accordingtoTRGIorTRForall
local regulations.
3. Prepare the electrical connections.
&Mainscable:NYM-J3x1.5mm
2
,
fuse max. 16 A, 230 V~, 50 Hz.
&Accessory cables: NYM with the
required number of conductors
for the external connections.
&Allcablesinarea"G" should
protrude 1200 mm from the wall.
Preparations for boiler installation (cont.)
6
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Note
The expansion vessel connector is packed separately.
AHeating flow
Installing the boiler and making all connections
7
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BDHW (gas fired combination boi-
ler)
DHW flow (gas fired boiler)
CGas connection
DCold water (gas fired combination
boiler)
DHW return (gas fired boiler)
EHeating return
FFill & drain valve
Flue gas connection
Connect the balanced flue pipe. Flue gas system installation
instructions.
Condensate connection
Connect the condensate drain with a
pipe air vent valve sloping to the pub-
lic sewer.
Installing the boiler and making all connections (cont.)
8
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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
leadstodamageonboiler
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.
Gas connection
9
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Opening the control unit housing
10
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Notes regarding the connection of accessories
For details of accessories also observe the separate installation instruc-
tions provided.
ARadio clock connection BVitotrol 100 UTD (only for control
units operating with a constant
temperature)
CVitotrol 100 UTA (only for control
units operating with a constant
temperature)
Electrical connections
11
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Plug 230 V~
fÖ Power supply
&Never interchange cores "L1"
and "N".
&Install an isolator in the mains
supply line which simulta-
neously separates all non-
earthed conductors from the
mains with at least 3 mm contact
separation.
&Max. fuse rating 16 A.
lH &Mains supply - accessories
(230 V ~ 50 Hz). Where the boi-
ler is installed in a bathroom or
shower room, the mains supply
of accessories outside the wet
area must not be connected to
the control unit. The power sup-
ply connection for accessories
canbemadeimmediatelyatthe
control unit, if the boiler is
installed outside damp areas.
This connection is directly con-
trolled with the system ON/OFF
switch (max. 3A).
&Vitotrol 100 UTA
&Vitotrol 100 UTD
Low voltage plug
!Outside temperature sensor
(only for weather-compensated
mode).
Installation:
&North or northwestern wall, 2
to2.5mabovegroundlevel.In
multi-storey buildings, in the
upper half of the second floor
&Not above windows, doors or
ventilation outlets
&Not immediately below balcony
or gutter
&Do not render over
&Twocorecablewithamaxi-
mum length of 35 m and a
cross-section of 1.5 mm
2
?Flow temperature sensor for low
loss header (accessories)
%Cylinder temperature sensor
(part of the DHW cylinder con-
nection set)
aVG KM BUS user (accessory)
&Vitotrol 200 or 300 remote con-
trol
&Vitocom 100
&Extension kit for one heating
circuit with mixer
&Vitosolic
&External extension H1 or H2
Electrical connections (cont.)
12
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Routing connecting cables
!Important information
Connecting cables are damaged if they touch hot components.
When routing and securing connecting cables on site, ensure that the
maximum permissible cable temperatures are not exceeded.
ALow voltage connections
B230 V connections
CInternal extension
DMain PCB
ECommunications module
Electrical connections (cont.)
13
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Closing control unit housing and inserting user interface
14
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Commissioning and adjustments
For commissioning and adjustment, see service instructions.
Front panel installation
15
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16
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5862 512 GB Subject to technical modifications
Viessmann Limited
Hortonwood 30, Telford, TF1 7YP, GB
Telephone: [phone]
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www.viessmann.co.uk