Viessmann VITOLADENS 300-W Quick guide

Installation and service
instructions
for contractors
VIESMANN
Vitoladens 300-W
Type VP3C, 12.9/19.3 kW, 16.1/23.5 kW
Wall mounted oil condensing boiler
For applicability, see the last page
VITOLADENS 300-W
5782 885 UAE 2/2013 Please keep safe.

2
Please follow these safety instructions closely to prevent accidents and mate-
rial 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 envi-
ronmental pollution.
Note
Details identified by the word "Note" con-
tain additional information.
Target group
These instructions are exclusively inten-
ded for qualified contractors.
■ Work on electrical equipment must
only be carried out by a qualified elec-
trician.
■ The system must be commissioned by
the system installer or a qualified per-
son authorised by the installer.
Regulations
Observe the following when working on
this system:
■ National installation requirements
■ Legal instructions regarding the pre-
vention of accidents
■ Legal instructions regarding environ-
mental protection
■ The Code of Practice of relevant trade
associations
■ All current safety regulations as
defined by DIN, EN, DVGW, VDE and
all locally applicable standards
aÖNORM, EN and ÖVE
cSEV, SUVA, SVTI and SWKI
Working on the system
■ Isolate the system from the power sup-
ply (e.g. by removing the separate fuse
or by means of a mains isolator) and
check that it is no longer 'live'.
■ Safeguard the system against unau-
thorised reconnection.
!Please note
Electronic assemblies can be
damaged by electrostatic dis-
charge.
Before beginning work, touch
earthed objects, such as heating
or water pipes, to discharge static
loads.
Repair work
!Please note
Repairing components that fulfil a
safety function can compromise
the safe operation of your sys-
tem.
Replace faulty components only
with original Viessmann spare
parts.
Safety instructions
Safety instructions
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Auxiliary components, spare and
wearing parts
!Please note
Spare and wearing parts that
have not been tested together
with the system can compromise
its function. Installing non-author-
ised components and making
non-approved modifications or
conversions can compromise
safety and may invalidate our
warranty.
For replacements, use only orig-
inal spare parts supplied or
approved by Viessmann.
Safety instructions
Safety instructions (cont.)
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Service instructions
Product information
Intended use......................................................................................................... 6
Installation instructions
Preparing for installation................................................................................... 7
Installation sequence
Fitting the boiler and making connections............................................................ 9
Flue gas connection............................................................................................. 11
Condensate connection........................................................................................ 11
Installing the oil supply as a single line system.................................................... 12
Opening the control unit casing............................................................................ 13
Electrical connections........................................................................................... 15
Closing the control unit casing and inserting the programming unit..................... 19
Connecting the fire protection switch (for a only)............................................. 20
Fitting the front panel............................................................................................ 21
Service instructions
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance.......................................... 22
Further details regarding the individual steps....................................................... 24
Code 1
Calling up coding level 1...................................................................................... 54
General................................................................................................................. 55
Boiler.................................................................................................................... 57
DHW..................................................................................................................... 58
Solar..................................................................................................................... 59
Heating circuit 1, heating circuit 2, heating circuit 3............................................. 60
Code 2
Calling up coding level 2...................................................................................... 66
General................................................................................................................. 67
Boiler.................................................................................................................... 74
DHW..................................................................................................................... 76
Solar..................................................................................................................... 78
Heating circuit 1, heating circuit 2, heating circuit 3............................................. 82
Diagnosis and service scans
Calling up the service level................................................................................... 90
Diagnosis.............................................................................................................. 90
Index
Index
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Checking outputs (relay test)................................................................................ 93
Troubleshooting
Fault display......................................................................................................... 95
Fault codes........................................................................................................... 96
Repair................................................................................................................... 104
Function description
Control unit .......................................................................................................... 112
External extensions (accessories)........................................................................ 115
Control functions.................................................................................................. 119
Allocating heating circuits to the remote control................................................... 127
Designs
Connection and wiring diagram – Internal connections ...................................... 128
Connection and wiring diagram – External connections...................................... 129
Parts lists
Ordering parts...................................................................................................... 131
Overview of the assemblies................................................................................. 132
Casing assembly.................................................................................................. 133
Heat cell assembly............................................................................................... 134
Burner assembly.................................................................................................. 136
Hydraulic assembly.............................................................................................. 138
Control unit assembly........................................................................................... 140
Miscellaneous assembly...................................................................................... 142
Commissioning/service reports........................................................................ 143
Specification....................................................................................................... 145
Certificates
Declaration of conformity...................................................................................... 146
Manufacturer's certificate according to the 1st BImSchV [Germany]................... 147
Keyword index.................................................................................................... 148
Index
Index (cont.)
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The appliance is only intended to be
installed and operated in sealed unven-
ted heating systems that comply with
EN 12828, with due attention paid to the
associated installation, service and
operating instructions. It is only designed
for the heating of water that is of potable
water quality.
Intended use presupposes that a fixed
installation in conjunction with permissi-
ble, system-specific components has
been carried out.
Commercial or industrial usage for a pur-
pose other than heating the building or
DHW shall be deemed inappropriate.
Any usage beyond this must be
approved by the manufacturer for the
individual case.
Incorrect usage or operation of the appli-
ance (e.g. the appliance being opened
by the system user) is prohibited and
results in an exclusion of liability. Incor-
rect usage also occurs if the components
in the heating system are modified from
their intended use (e.g. if the flue gas and
ventilation air paths are sealed).
Product information
Intended use
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Preparing for boiler installation
!Please note
Avoid device damage.
Connect all pipework free of load
and torque stress.
For on-site preparation of the
water and electrical connections,
see the installation instructions
for the installation aid or mount-
ing frame.
480
min. 350
850
380
1925
BA C EFD
G
K
H
AHeating flow Rp¾
BExpansion vessel connection G¾
CCylinder flow G¾
DCylinder return G¾
EHeating return Rp¾
FFilling/draining
Preparing for installation
Preparing for installation
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Installation

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GWiring area
HDimension for installation with DHW
cylinder below
KCondensate drain
1. Prepare the water connections. Thor-
oughly flush the heating system.
2. Prepare the oil connections (oil fil-
ter).
■ Single line filter (magnum filter
bowl with large filter element, filter
grade max. 40 µm) with automatic
fuel oil air vent valve (see
page 12).
■ Fit the filter as near as possible to
the lower edge of the boiler (on l.h.
or r.h. side) to leave the flexible oil
lines inside the boiler long enough
to remove the burner.
3. Prepare the electrical connections.
■Power cable: NYM-J 3 x 1.5 mm2,
max. fuse 16 A, 230 V/50 Hz
■ Accessory cables: NYM with the
required number of conductors for
the external connections
■Allow all cables in area "G" to pro-
trude 1200 mm from the wall
Preparing for installation
Preparing for installation (cont.)
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2x
1.
2.
4.
3.
Installation sequence
Fitting the boiler and making connections
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Installation

10
A C D E FB
1.
2.
5x
AHeating flow
BExpansion vessel connection
CCylinder flow
DCylinder return
EHeating return
FFilling/draining
Installation sequence
Fitting the boiler and making connections (cont.)
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Note
The labels "System certificate" and "Sko-
berne GmbH flue system" enclosed with
the technical documentation may only be
used in conjunction with the Viessmann
flue system made by Skoberne.
Note
Install the boiler horizontally and at 90
degrees to the wall.
Connect a balanced flue system to the
boiler flue connection.
Note
If a balanced flue system
7
60/100 mm is to be connected, a bal-
anced flue adaptor (accessories) is
required.
Flue system installation instruc-
tions
Condensate connection
A
B C
AInlet from the boiler
BNeutralising system or active char-
coal filter
CDrain to the public sewage system
Connect the condensate pipe to the pub-
lic sewage system by the shortest route,
with a constant fall and a pipe vent.
Install a neutralising system if required.
Note
DWA-A 251 permits boiler use without a
neutralising system when operating with
low sulphur fuel oil DIN 51605-EL-1 (sul-
phur content ≤ 50 mg/kg).
If no neutralising system is connected,
use the active charcoal filter (accesso-
ries).
Installation sequence
Flue gas connection
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Installation

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Ø
A
B
H
AFuel oil filter with automatic air vent
valve
BFoot valve
Install a single line fuel oil filter R ⅜ (filter
grade max. 40 µm) and a fuel oil air vent
valve in the oil supply.
We recommend:
■ Automatic fuel oil air vent valve with
filter: FloCo-Optimum-K (filter grade
5 µm).
■ For replacement during maintenance:
Oil filter element Microtec MC-18 (filter
grade 5 µm).
See Vitoset pricelist.
For tanks below the oil burner pump:
If the suction head or the max. pipe
length is greater than specified in the fol-
lowing table, install an oil feed pump with
intermediate tank in the immediate prox-
imity of the boiler.
Sizing the oil line
Suction
head H
in m
Max. pipe length in m with
suction line internal diam-
eter
4 mm 5 mm 6 mm
+4.0 100 100 100
+3.5 95 100 100
+3.0 89 100 100
+2.5 83 100 100
+2.0 77 100 100
+1.5 71 100 100
+1.0 64 100 100
+0.5 58 100 100
0.0 52 100 100
-0.5 46 100 100
-1.0 40 97 100
-1.5 33 81 100
-2.0 27 66 100
-2.5 21 51 100
-3.0 15 36 75
-3.5 9 21 44
-4.0 — 6 12
Installation sequence
Installing the oil supply as a single line system
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Note
For the oil line, select the smallest diam-
eter required for the suction head.
Opening the control unit casing
!Please note
Electronic assemblies can be
damaged by electrostatic dis-
charge.
Before beginning work, touch
earthed objects, such as heating
or water pipes, to discharge static
loads.
Installation sequence
Installing the oil supply as a single line… (cont.)
5782 885 UAE
Installation

14
2x
4x
4.
3.
5.
2.
1.
Installation sequence
Opening the control unit casing (cont.)
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L N
230V~
LN
230V~
5
A
2
1
156 40
145
3217654
X3
40201124 156
ARadio clock connection
Information on connecting
accessories
When connecting accessories
observe the separate installation
instructions provided with them.
Plug 230 V~
fÖ Power supply
■ Remove any existing individual
cores.
Danger
Incorrectly executed
electrical installations
can result in injuries from
electrical current and in
appliance damage.
Installation sequence
Electrical connections
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Installation

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Connect the power sup-
ply and implement all
safety measures (e.g.
RCD circuit) in accord-
ance with the following
regulations:
– IEC 60364-4-41
– VDE regulations
– Connection require-
ments specified by
your local power sup-
ply utility
■ Install an isolator in the power
cable that simultaneously iso-
lates all non-earthed conductors
from the power supply with at
least 3 mm contact separation.
We additionally recommend
installing an AC/DC-sensitive
RCD (RCD class B ) for
DC (fault) currents that can
occur with energy efficient
equipment.
In the case of greater cable
cross-sections (up to 714 mm)
remove the existing cable entry.
Secure the cable with cable
grommet F integrated in the
casing base (see page 18).
■ Max. fuse rating 16 A.
aBH ■ Accessory power supply at the
control unit (230 V/50 Hz). The
connection is switched by the
system ON/OFF switch.
If the total system current
exceeds 6 A, connect one or
more extensions via an ON/OFF
switch directly to the mains sup-
ply.
LV plugs
!Outside temperature sensor
Installation:
■ North or north-westerly 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
vents
■ Not immediately below balco-
nies or gutters
■ Never render over
■ Two-core lead, max. 35 m length
with a cross-section of 1.5 mm2
?Flow temperature sensor for low
loss header (accessories)
%Cylinder temperature sensor (part
of the DHW cylinder connection
set)
aVG KM BUS subscriber (accessories)
■ Vitotrol 200A or 300A remote
control
■ Vitocom 100
■ Extension kit for one heating cir-
cuit with mixer
■ Solar control module, type SM1
■ Vitosolic
■ Extension AM1
■ Extension EA1
■ Wireless base station
Installation sequence
Electrical connections (cont.)
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Connection of accessories
Power supply and KM BUS
Power supply to all accessories via heat source control unit
145 145 40A 40 145 145 40A 40
B C
145 40 156
A
145 145 40A 40
D
E
Some accessories with direct power supply
145 145 40A 40 145 145 40A 40
B C
145 40 156
A
145 145 40A 40
D
E
AHeat source control unit
BExtension kit for heating circuit with
mixer M2
CExtension kit for heating circuit with
mixer M3
DExtension AM1, EA1 and/or solar
control module, type SM1
EON/OFF switch
The output concerned should only be
used to control an on-site relay if the cur-
rent flowing to the connected working
parts (e.g. circulation pumps) is higher
than the safety level of the relevant
accessory.
Accessories Internal fuse
protection
Extension kit for heat-
ing circuit with mixer
2 A
Extension AM1 4 A
Extension EA1 2 A
Solar control module,
type SM1
2 A
Installation sequence
Electrical connections (cont.)
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Installation

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Routing the connecting cables
!Please note
If connecting cables touch hot
components they will be dam-
aged.
When routing and securing con-
necting cables on site, ensure
that the maximum permissible
temperatures for these cables
are not exceeded.
EA
D
B
C
F
%
ALV connections
B230 V connections
CInternal extension
DMain PCB
ECommunication module
FCable grommet for power cable
%Plugs for connecting the cylinder
temperature sensor to the cable har-
ness
Installation sequence
Electrical connections (cont.)
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1.
6.
4.
5.
2.
2x
3.
Insert programming unit (packed sepa-
rately) into the control unit support.
Note
The programming unit can also be inser-
ted into a wall mounting base (accesso-
ries) near the boiler.
Wall mounting base installation
instructions
Installation sequence
Closing the control unit casing and inserting the programming unit
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Installation

20
Note
Remove the existing jumper before con-
necting the fire protection switch.
3.
5.
4.
1.
2.
Installation sequence
Connecting the fire protection switch (for a only)
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