Viessmann Vitodens 300 User manual

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
2
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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
3
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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
4
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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
5
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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
2
, 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.)
6
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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
7
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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
8
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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.)
9
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Opening the control unit housing
10
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Information regarding the connection of accessories
For details of accessories, also observe their separate installation
instructions provided.
!Please note
Electronic modules can be damaged by electro‐static discharges.
Touch earthed objects, such as heating or water pipes, to discharge sta-
tic loads.
Electrical connections
11
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ARadio clock receiver
Electrical connections (cont.)
12
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BVitotrol 100 UTD (only for con-
stant temperature control units)
Remove jumper when making this
connection.
CVitotrol 100 UTA (only for constant
temperature control units)
Remove jumper when making this
connection.
230 V~ plugs
sK &DHW circulation pump G
or
&External heating circuit pump
G
or
&Cylinder primary pump G
or
&Central fault message E
Rated voltage: 230 V ~
Rated current : max. 2 (1) A ~
fÖ Power supply
Danger
Incorrect core terminations
can cause severe injuries
and damage to the equip-
ment.
Take care not to inter-
change wires "L1" and "N".
&Install an isolator in the power
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.
gD &External safety solenoid valve
(LPG) D; when connecting,
never remove the jumper
between "1" and "L"
or
&Only for a: flue gas damper
with spring bias F;whencon-
necting, remove the jumper
between "1" and "L"
Rated voltage: 230 V ~
Rated current : max. 1 (0.5) A ~
lH &Power supply accessories (230
V ~ 50 Hz). Where the boiler is
installed in a wet area, the con-
nection of accessories to the
power supply must not be car-
ried out at the control unit. The
power supply connection for
accessories can be made imme-
diately at the control unit, if the
boiler is installed outside wet
areas. This connection is
directly controlled with the sys-
tem ON/OFF switch (max. 3 A).
&Vitotrol 100 UTA
&Vitotrol 100 UTD
Electrical connections (cont.)
13
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Low voltage plugs
!Outside temperature sensor
(only for weather‐compensated
control units)
Installation:
&North or north‐western wall,
2 to 2.5 m above ground level;
in multi‐storey buildings, in the
upper half of the second floor
&Not above windows, doors or
ventilation outlets
&Not immediately below balco-
nies or gutters
&Never render over
&2‐core cable, max. 35 m length
withacross‐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 (accessories)
&Vitotrol 200 or 300 remote con-
trol
&Vitocom 100
&Extension kit for a heating cir-
cuit with mixer
&Vitosolic
&External extension H1 or H2
Allocation of connections to plug 28
Coding address 53 must be changed
at the control unit to suit the function
of the connected component.
Function Coding
DHW circulation pump
(delivered condition)
53:1
External heating circuit
pump for heating circuit
without mixer
53:2
Cylinder primary pump 53:3
Fault notification 53:0
Electrical connections (cont.)
14
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Routing connecting cables
!Please note
Connecting cables will be damaged if they contact hot parts.
When routing and securing connecting cables on site, ensure that the
maximum permissible temperatures for these cables are not exceeded.
ALow voltage connections
B230 V connections
CInternal extension
DMain PCB
ECommunications module
FCable grommet for power supply
cable
%Plugs for connecting the cylinder
temperature sensor to the cable
harness
Remove the existing cable grommet
when using larger cross‐sections (up
to 714 mm). Secure the cable with
the cable grommet F(black) inte-
grated into the casing base.
Electrical connections (cont.)
15
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Closing the control unit casing and inserting the programming unit
16
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Commissioning and adjustment
For commissioning and adjustment, see service instructions.
Front panel installation
17
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18
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19
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20
Printed on environmentally-friendly, chlorine-free bleached paper
5862 872 GB Subject to technical modifications.
Viessmann Werke GmbH&Co KG
D-35107 Allendorf
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www.viessmann.de
Viessmann Limited
Hortonwood 30, Telford
Shropshire, TF1 7YP, GB
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