Viessmann Vitotwin 300-W Istruzioni operative
Installation and service
instructions
for contractors
VIESMANN
Vitotwin 300-W
Type C3HA
Micro CHP boiler based on Stirling engine
Natural gas version
For applicability, see the last page
VITOTWIN 300-W
5618 294 GB 4/2012 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
designed for qualified personnel.
■ Work on gas equipment must only be
carried out by a qualified gas fitter.
■ 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
■ all legal instructions regarding the pre-
vention of accidents,
■ all legal instructions regarding envi-
ronmental protection,
■ the Code of Practice of relevant trade
associations,
■ all current safety regulations as
defined by DIN, EN, DVGW, TRGI,
TRF, VDE and all locally applicable
standards,
■ Gas Safety (Installation & Use) Regu-
lations
– the appropriate Building Regulation
either the Building regulations, the
Building Regulation (Scotland),
Building Regulations (Northern Ire-
land),
– the Water Fittings Regulation or
Water Bylaws in Scotland,
– the current I.E.E. Wiring Regula-
tions.
If you smell gas
Danger
Escaping gas can lead to explo-
sions which may result in serious
injury.
■ Never smoke. Prevent naked
flames and sparks. Never
switch lights or electrical appli-
ances ON or OFF.
■ Close the gas shut-off valve.
■ Open windows and doors.
■ Remove all people from the
danger zone.
■ Notify your gas or electricity
supplier from outside the build-
ing.
■ Shut off the electricity supply to
the building from a safe place
(outside the building).
Safety instructions
Safety instructions
5618 294 GB
3
If you smell flue gas
Danger
Flue gas can lead to life-threat-
ening poisoning.
■ Shut down the heating system.
■ Ventilate the boiler room.
■ Close all doors leading to the
living space.
Working on the system
■ When using gas as fuel, also close the
main gas shut-off valve and safeguard
against unauthorised reopening.
■ Isolate the system from the power sup-
ply and check that it is no longer 'live',
e.g. by removing a separate fuse or by
means of a main isolator.
■ Safeguard the system against unau-
thorised reconnection.
!Please note
Electronic modules can be dam-
aged by electro-static dis-
charges.
Touch earthed objects, such as
heating or water pipes, to dis-
charge static loads.
Repair work
!Please note
Repairing components which ful-
fil a safety function can compro-
mise the safe operation of your
heating system.
Replace faulty components only
with original Viessmann spare
parts.
Ancillary components, spare and
wearing parts
!Please note
Spare and wearing parts which
have not been tested together
with the heating system can com-
promise its function. Installing
non-authorised components and
non-approved modifications/con-
version can compromise safety
and may invalidate our warranty.
For replacements, use only orig-
inal spare parts from Viessmann
or those which are approved by
Viessmann.
Safety instructions
Safety instructions (cont.)
5618 294 GB
4
Installation instructions
Preparing for installation
Product information.............................................................................................. 6
Preparing for installation....................................................................................... 6
Installation sequence
Fitting the wall mounting bracket.......................................................................... 36
Mounting the boiler............................................................................................... 38
Removing the front panel..................................................................................... 39
Removing the transport brackets......................................................................... 42
Filling the siphon with water................................................................................. 43
Flue outlet............................................................................................................. 44
Condensate connection........................................................................................ 44
Gas connection.................................................................................................... 45
Opening the control unit casing............................................................................ 47
Terminal connections........................................................................................... 47
Mounting the front panel....................................................................................... 58
Service instructions
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance.......................................... 59
Further details regarding the individual steps....................................................... 61
Codes
Calling up codes................................................................................................... 85
Changing codes................................................................................................... 86
Service scans
Calling up service scans....................................................................................... 112
Fault messages and fault history.......................................................................... 112
Status (operating states)...................................................................................... 112
Relay test............................................................................................................. 113
Input/output test.................................................................................................... 114
Service/special operation (service functions)....................................................... 115
Diagnostics........................................................................................................... 116
Troubleshooting
Fault display......................................................................................................... 121
Implementing a user reset ................................................................................... 121
Carry out service reset ........................................................................................ 122
Reset circuit breaker............................................................................................ 122
Fault messages.................................................................................................... 123
Index
Index
5618 294 GB
5
Repairs................................................................................................................. 138
Function description
Boiler temperature control.................................................................................... 153
Cylinder temperature control................................................................................ 156
Heating circuit control........................................................................................... 158
Designs
Connection and wiring scheme............................................................................ 161
Parts lists
Ordering parts...................................................................................................... 165
Overview of the assemblies................................................................................. 166
Sheet metal parts assembly................................................................................. 167
Heat cell assembly............................................................................................... 169
Heat exchanger assembly.................................................................................... 171
Burner assembly.................................................................................................. 171
Air distribution valve assembly............................................................................. 172
Gas:air route assembly........................................................................................ 174
Stirling unit assembly........................................................................................... 176
Hydraulic assembly.............................................................................................. 178
Control unit assembly........................................................................................... 180
Miscellaneous assembly...................................................................................... 182
Commissioning/service reports
Report................................................................................................................... 184
Specification....................................................................................................... 186
Certificates
Declaration of conformity...................................................................................... 187
Manufacturer's certificate according to the 1st BImSchV [Germany]................... 188
Keyword index.................................................................................................... 189
Index
Index (cont.)
5618 294 GB
6
Vitotwin 300-W, C3HA
Preset for operation with natural gas E.
Conversion to natural gas LL see page 66.
Rated heating output range (TV/TR 40/30 °C) 3.5 to 26.0 kW.
Electrical output max. 1 kW (gross).
The integral net electricity meter is approved to DIN VDE AR 4105.
Destination countries
As a general rule, the Vitotwin 300-W may only be supplied to those countries speci-
fied on the type plate. For deliveries to alternative countries, an approved contractor
must arrange individual approval on his own initiative and in accordance with the law
of the country in question.
Preparing for installation
Transportation and handling
!Please note
To avoid equipment damage,
move the Vitotwin 300-W
on its pallet to the installation
location.
Transport the appliance in a ver-
tical position wherever possible.
The appliance may be placed in
a horizontal position for up to
30 min during handling.
Power supply
!Please note
To avoid equipment damage,
never operate the Vitotwin 300-W
with anything other than mains
power.
Preparing for installation
Product information
5618 294 GB
7
Information regarding system versions
■ The Vitotwin 300-W will be delivered
with connection accessories for the
relevant system version in accordance
with the order.
■ Connect the DHW circulation pump on
site (if applicable).
Preparing for installation
Preparing for installation (cont.)
5618 294 GB
Installation
8
System version 1, ID: 4605451_1201_02
System with multi mode heating water buffer cylinder
Hydraulic installation scheme
2 B
--2B/ATS--
--230V--
--52--
--20-- --2--
kW
21
5
22
20
--2B/B4--
--2B/B3--
8
6
1
--B42--
--B4--
--B3--
--ATS--
41
-Wireless-
4
--B41-- --2B/WIRELESS--
HV1
WW/Z
HV2/HR1
HVS/HRS
E
kW
HR3
HR2
--2B/B41--
3 A
3 B
40
42
44
--41/2--
--41/52--
--41/20--
43
--2B/B42--
7
--BSB--
--X1--
2
--230V-- --X300--
--X301--
--X207--
--BSB--
HV1 N/A WW/Z DHW/DHW circulation
Preparing for installation
Preparing for installation (cont.)
5618 294 GB
9
HV2/HR1 Heating water flow,
Vitotwin 300-W
HR2 Heating water flow, heating
circuit
HR3 Heating water return, heat-
ing circuit
KW Cold water
E Drain
HVS/HRS Heating water return,
Vitotwin 300-W
Equipment required
Pos. Designation
1Vitotwin 300 W
with
2Weather-compensated control unit
2BJunction box for sensors and accessories (low voltage)
3ARemote control unit FBE
3BWireless base station FB
4Outside temperature sensor ATS
5Cylinder temperature sensor STS B3
6Buffer temperature sensor PTSO B4, top
7Sensor for power demand function B41
8Buffer temperature sensor PTSU B42, bottom
DHW heating
wP Multi mode heating water buffer cylinder with integral DHW heating
Vitocell 340-M
wQ DHW circulation pump CP (electrical connection on site)
wW Automatic thermostatic mixing valve
rP Heating circuit 1 with mixer
rQ Extension kit for one heating circuit with mixer with integral mixer motor
and
rW Flow temperature sensor heating circuit M1
rE Heating circuit pump, heating circuit M1
rR 3-way mixer
or
Divicon (with 3-way mixer and heating circuit pump)
tP Heating circuit 2 with mixer
tQ Extension kit for one heating circuit with mixer with integral mixer motor
and
tW Flow temperature sensor, heating circuit M2
tE Heating circuit pump, heating circuit M2
tR 3-way mixer
or
Divicon (with 3-way mixer and heating circuit pump)
Preparing for installation
Preparing for installation (cont.)
5618 294 GB
Installation
10
Pos. Designation
zP Heating circuit 3 with mixer (and plate heat exchanger for system sep-
aration)
zQ Extension kit for one heating circuit with mixer with integral mixer motor
and
zW Flow temperature sensor, heating circuit M3
zE Heating circuit pump, heating circuit M3
zR 3-way mixer
or
Divicon (with 3-way mixer and heating circuit pump)
zZ Plate heat exchanger for system separation
Accessories (optional)
uP Vitocom 100, type GSM
uQ Central fault message
no pos.
no.
Wireless repeater for wireless remote control
no pos.
no.
230 V∼ extension
Installation of the Vitotwin 300-W with
the supplied installation aid:
Installation aid installation
instructions
Preparing for installation
Preparing for installation (cont.)
5618 294 GB
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