Viessmann Vitotron 100 Operating instructions

Vitotron 100
Type VMN3, VLN3
Electric instantaneous water boiler for central heating
6155063 GB 6/2020
Operating instructions
for system users
VITOTRON100

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6155063
Please follow these safety
instructions closely to prevent injury
and material damage.
Danger
This symbol warns against the risk
of injury.
These operating instructions are
designed for heating system users.
This appliance can also be operated by
children aged 8 and above, as well as by
individuals with reduced physical,
sensory or mental faculties or those
lacking in experience and knowledge,
provided such individuals are supervised
or have been instructed in the safe use
of this appliance as well as in any risks
arising from it.
■The appliance may be connected and
commissioned only by authorised
contractors.
■ Observe the specied electrical
connection requirements.
■ Modications to the existing installation
may only be carried out by authorised
contractors.
Caution
Supervise children in the proximity
of the appliance.
■
Never permit children to play with
the appliance.
■
Cleaning and user maintenance
must never be carried out by
unsupervised children.
Danger
Incorrectly executed work on the
heating system can lead to life
threatening accidents.
■
Work on electrical equipment must
only be carried out by a qualied
electrician.
Caution
This symbol warns against the risk
of material losses and environmental
pollution.
Note
Details identied by the word "Note"
contain additional information.
Safety instructions explained
Target group
Connecting the appliance
Safety instructions
Safety instructions

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Safety instructions (cont.)
Danger
Damaged equipment poses a
safety hazard. Check the appliance
for external damage. Do not
commission a damaged appliance.
Danger
Water escaping from the appliance
represents a risk of electric shock.
■
Switch off the heating system at
the external isolator (e.g. fuse box,
domestic distribution board).
■
Notify your local heating
contractor.
Danger
Fault messages indicate faults in
the heating system. If faults are
not rectied, they can have life
threatening consequences.
Do not acknowledge fault
messages several times in quick
succession. Inform your heating
contractor so the cause can be
analysed and the fault rectied.
Working on the appliance
Damage to the appliance
Water escaping from the appliance
If the heating system develops a fault
Safety instructions
■All settings and work on the appliance
must be carried out as specied in
these operating instructions. Further
work on the appliance may be carried
out only by authorised contractors.
■Do not open the appliance.
■Do not remove the casing.
■ Never change or remove tted
accessories or attachments.
■Do not open or tighten pipe
connections.
Danger
Hot surfaces can cause burns.
■
Do not open the appliance.
■
Do not touch the hot surfaces
of uninsulated pipes and ttings.

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Safety instructions (cont.)
Safety instructions
Caution
Components not tested with the
heating system may damage the
system or affect its function. Have
all installation or replacement work
carried out exclusively by qualied
contractors.
Installation room requirements
Auxiliary components, spare and wearing parts
Danger
Do not make any subsequent
modications to the building
characteristics that could affect safe
operation (e.g. cable/pipework
routing, cladding or partitions).
Danger
Never store or use such materials
in the boiler room or in direct
proximity to the heating system.
Caution
Incorrect ambient conditions can
lead to heating system damage and
can put safe operation at risk.
■
Ensure ambient temperatures
above 0 °C and below 35 °C.
■
Prevent air contamination by
halogenated hydrocarbons
(e.g. as contained in paints,
solvents or cleaning uids) and
excessive dust (e.g. through
grinding/polishing work).
■
Avoid continuously high humidity
levels (e.g. through continuous
drying of laundry).

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Keyword index
Keyword index
Information
Introductory information
Operation
Settings
Operation
Settings
Troubleshooting
Appendix
Symbols ................................................................................................... 6
Intended use ............................................................................................ 6
Terminology ............................................................................................. 6
Commissioning ........................................................................................ 7
Your system is preset at the factory ........................................................ 7
Energy saving tips ................................................................................... 7
Control panel VMN3 ................................................................................ 8
Control panel VMN3 ................................................................................12
Control panel VLN3 .................................................................................19
Control panel VLN3 .................................................................................21
Rooms are too cold .................................................................................26
Rooms are too hot ...................................................................................26
No DHW installed ....................................................................................26
DHW is too hot ........................................................................................26
"Fault" is shown on the display ................................................................26
Terminology .............................................................................................27
Disposal information ................................................................................27
1.
2.
3.
4.
5.
6.
7.
8.

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Information
Symbols
Symbol Meaning
See other documents for
more information
Step in a diagram:
The numbers correspond to the order in
which the steps should be carried out.
Warning of material losses and
environmental pollution
Intended use
Terminology
The appliance is intended solely for installation and
operation in sealed unvented heating systems that
comply with EN 12828, with due attention paid to
the associated installation, service and operating
instructions. It is only designed for heating up
heating water that is of potable water quality.
Intended use presupposes that a xed installation
in conjunction with permissible, system-specic
components has been carried out.
To provide you with a better understanding of the
functions of your Viessmann control unit, some
terminology is explained.
The terms are marked as follows:
Commercial or industrial usage for a purpose other
than heating the building or DHW shall be deemed
inappropriate.
Any usage beyond this must be approved by the
manufacturer in each individual case.
Incorrect usage or operation of the appliance
(e.g. the appliance being opened by the system user)
is prohibited and will result in an exclusion of liability.
Incorrect usage also occurs if the components in the
heating system are modied from their intended
function.
Further information can be found in chapter
Terminology in the Appendix.

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Commissioning
Your system is preset at the factory
Energy saving tips
The commissioning and matching of the control unit to
local conditions and to building characteristics, plus the
instruction of the user in operating the system, must be
carried out by your heating contractor.
Your heating system is preset at the factory and is
therefore ready for operation.
Your heating contractor can make further settings for
you during commissioning.
You can change the settings at any time to suit your
individual requirements.
Central heating
■
Room temperature:
Never overheat your rooms. Every degree of room
temperature reduction saves up to 6 % on your
heating bills.
Set your room temperature no higher than 20 °C.
■
Operating modes:
If you do not require central heating, select one of
the following operating modes:
– In summer, if you do not want to heat any rooms
but do need DHW, set the boiler water
temperature to OFF.
– If you do not require central heating or DHW for a
long period of time, set the boiler water and DHW
temperature to OFF.
■
Roller shutters:
Close roller shutters (where installed) at dusk.
Power failure
All settings are retained if there is a power failure.
Introductory information
■
Thermostatic valves:
Ensure that thermostatic valves are properly
adjusted.
■
Radiators:
Never cover radiators or thermostatic valves.
DHW heating
■
DHW temperature:
Never set the DHW cylinder temperature
excessively high (see page 15).
■
DHW consumption:
Consider showering instead of running a bath. A
shower generally uses less energy than a full bath.

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Control panel VMN3
Operation
Turn button B(right or left) during the active winter
or summer program to switch between the function
displays on LCD screen A.
– Main display: Provides information on basic boiler
parameters (see table for details)
– Information on the operating parameters of other
heating circuits (if installed)
– Settings: Allows individual adjustment of the
parameters of the boiler and other heating circuits
according to the user's preferences
– Service/Conguration: Allows conguration of the
heating system according to the structural
conditions (available for the installation company
and contractors after entering the access code)
and displays the input and output signals for the
boiler as well as the current parameters
– PARTY/HOLIDAY/MANUAL: Allows the operating
algorithm to be changed quickly as required.
– Operating mode.
Individual functions can be called up after selecting the
corresponding function display and pressing the rotary
selector. If a fault occurs in the boiler, the message
will be displayed on the main function screen. Press
the rotary switch to display a list of faults.
ADisplay
BNavigation rotary switch for signal and parameter
display and settings

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Control panel VMN3 (cont.)
Operation
AHeat transfer display
BActive central heating program display
CRoom temperature display
DInternal temperature
EOutside temperature
FDHW temperature (if applicable)
Heat transfer
DHW heating/cylinder heating
Central heating
Buffer charging
Current central heating program
Time controlled (daily/weekly program)
PARTY – maintains a comfortable room and cylinder temperature
HOLIDAY – maintains an energy saving or frost-free room and cylinder temperature
MANUAL – maintains the set room temperature
TURBO – fastest possible heating to the set room temperature
Frost protection program enabled
Cylinder pasteurisation
Ventilation of the DHW circulation pump
Heating function blocked by signal from master appliance
Main display

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Control panel VMN3 (cont.)
Room temperature display
Frost protection
Energy saving temperature
Comfort temperature
Comfort temperature plus
Comfort temperature minus
Demand for heating energy via the room temperature controller (with the internal control unit)
Displays the start of time-controlled buffer charging
Appliance fault display
DHW circulation pump is running
Heating mode ON
The screen shows ow temperature A, set temperature
B and heating circuit identier C(assigned in the
VCMG3 module conguration). If there is no heat
demand, temperature Bis not displayed.
Heating circuit parameter information
Operation

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Control panel VMN3 (cont.)
Status display
Circulation heating
DHW circulation pump is running
Fault in the ow temperature sensor. In the event of a fault in the sensor
that measures the ow temperature of heating circuit 1, "- -" is displayed
Heating circuit temperature too low. Appears when the set ow temperature
in heating circuit 2 is not reached within 15 minutes
Heating circuit operation is interrupted
Active central heating program display
Time controlled (daily/weekly program)
PARTY – maintains a comfortable room and DHW temperature
HOLIDAY – maintains a comfortable, energy saving or frost-free room and DHW temperature
MANUAL – maintains the set room temperature
Heating signal blocked by master appliance
Room temperature display
Frost protection
Energy saving temperature
Comfort temperature
Comfort temperature plus
Comfort temperature minus
Operation

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Settings:
Control panel VMN3 (cont.)
Settings
APeriod number (max. 5)
BStart time of the selected program
CEnd time of the selected program
DTemperature selection: , , ,
If other heating circuits are installed in the system,
these must be selected in the menu:
■
Boilers
■
Heating circuits.
If no other heating circuits are installed, the list of
settings appears with a boiler.
Boiler settings
■ Central heating ow temperature: Set ow
temperature (only available in the basic module with
xed parameters for the room temperature control
unit)
[Conguration > CH > Control > Fixed parameters].
■Room temperature (only available when Tr sensor
is active) [Conguration > Room temp. > Room
sensor > Tr]:
– Energy saving , Comfort- , Comfort ,
Comfort+ : Set room temperature available in
the schedules
– Party, Holiday: Selection of temperatures to be
applied in the PARTY and HOLIDAY programs.
■DHW temperature|
(only available in systems with a cylinder):
– Energy saving , Comfort : Selection of
DHW temperature available in the schedules.
■Central heating program (only available in the basic modules and with an active
Tr sensor) [Conguration > Room temperature > Room temperature sensor > Tr]
– Numbers 1 to 8 > Setting of 8 daily programs
in each day program. There are 5 adjustable
periods, each of which can be assigned a
room temperature ( , , , ).
The process for setting daily programs is
described in Daily schedule.
Note:Ifnointervalsaredened,an
energy saving temperature is used. ( ).
– Weekly: A preset is assigned on each day of the
weekly program.

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Control panel VMN3 (cont.)
Settings
APeriod number (max. 5)
BStart time for buffer charging
CEnd time for buffer charging
■Buffer program
(only available in buffer mode).
– Numbers 1 to 8 > Setting of 8 daily programs
each with 5 adjustable periods during which the
cylinder is charged.
The process for setting daily programs is
described in Daily schedule.
– Weekly: Assignment of one setting per day of the
week for the daily programs.
APeriod number according to schedule (max. 5)
BStart time for selected temperature
CEnd time for selected temperature
DTemperature selection: ,
■DHW program (only available in systems with a DHW cylinder):
– Numbers 1 to 8 > Setting of 8 daily programs per
day program with 5 adjustable periods, each of
which can be assigned a cylinder temperature
(, ).
The process for setting daily programs is
described in Daily schedule.
Note:Ifnotemperatureisdened,an
energy saving temperature is used ( ).
– Weekly: Assignment of one setting per day of the
week for the daily programs.

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Control panel VMN3 (cont.)
■DHW CIRCULATION PROGRAM (only available when DHW circulation is active):
APeriod number according to schedule (max. 5)
BStart time for DHW circulation
CEnd time for DHW circulation operation
– Numbers 1 to 8 > Setting of 8 daily programs per
day program. There are 5 adjustable periods in
which the DHW circulation pump runs.
The process for setting daily programs is described
in Daily planning.
– Weekly: Assignment of one setting per day of the
week for the set daily programs.
■Pasteurisation (only available in systems with
a DHW cylinder):
– Temperature: Cylinder temperature during
pasteurisation
– Day of the week: Day for pasteurisation in the
automatic program
– Time: Time required for pasteurisation in the
automatic program
– Runtime: Time required for pasteurisation
(calculated from the moment the pasteurisation
temperature is reached)
– Automatic mode:
Yes – start pasteurisation automatically at the
specied time (time, day of the week)
No – automatic pasteurisation is disabled.
Pasteurisation is only carried out at the
request of the system operator.
– DHW circulation: Pasteurisation can be activated
for the entire system or only for DHW
– Start now: Starts pasteurisation manually
(regardless of set day and time).
■Date/time:
– Sets the current system time
(year, month, day of month, time).
– Automatic time change:
Yes – automatically changes the system time
between summer and wintertime
No – automatic time change is disabled.
■Language:
– Menu language selection.
■User interface:
– MIN. Brightness: Setting the brightness of the
display in standby mode.
– MAX. Brightness: Setting the brightness of the
display during operation.
– Tone:
Yes – tone when operating the rotary power
switch
No – no tone when operating the rotary power
switch
– Sensitivity of the rotary switch:
1 – high / 4 – low.
■System:
– Type: VMx3 (ID).
– MSK program: Program version for boiler control.
– PW program: Version of the control panel
program.
– Maximum rated output: Set boiler output.
– Reset: Start the boiler.
– Default factory setting: Restore.
Heating circuit settings
If more than one heating circuit is installed, select the
corresponding heating circuit from the list. If only one
heating circuit is installed, a parameter list is displayed
for it.
■Heating circuit program (only available with source
and cylinder modules). The daily and weekly
program settings are made in the same way as
for the central heating program.
■System:
– Stop:
Yes – no heating circuit operation
No – normal heating circuit operation.
– Reset – restart the heating circuit control unit
– Version of the heating circuit control unit
Settings

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Control panel VMN3 (cont.)
Party/Holiday/Manual
Operating mode
Rapid change between operating algorithms as
required.
■
Party: Set operating mode duration
(from 1 to 24 hours or until changed by the user).
■
Holiday: Set operating mode duration (from 1 to 60
days or until changed by the user).
■
Manual: Reach the room temperature set at the
control unit – until changed by the user.
■
Turbo: Switch on the heating function in the building
with maximum parameters until the set room
temperature is achieved.
Note: This option is only available when the
room temperature drops below the temperature
currently set in the schedule.
* If one of the above operating modes is activated after
calling up the Party/Holiday/Manual settings, it can
be switched off. In manual mode, the set temperature
can also be changed.
* The symbol for the active operating mode is shown
on the main function display.
The current operating mode of the boiler is shown on
the display. Depending on the boiler conguration, the
following operating modes are available:
■
Standby – central heating and DHW heating
functions are switched off.
■
Summer – heating function for DHW only.
Note: This function is only available if a DHW
cylinder is installed.
■
Winter – heating function for central heating and
DHW (if a DHW cylinder is installed).
If the boiler is in standby mode (display off), press the
rotary switch to display the operating mode. To change
the operating mode, press the navigation rotary switch
and select the appropriate position. Select "End" to exit
the settings without changing the operating mode.
Commissioning
If the boiler is being commissioned for the rst time
or has been reset to the factory settings, rst select
the menu language and then select the boiler output
from the list. Boiler operation cannot be set correctly
until this data has been entered. When commissioning
for the rst time with heating circuit modules, rst
congure the VCMG3 module (see Chapter 4.2
Conguration mode instructions for VCMG3). Ensure
that a unique identication number is assigned.
Settings

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Daily schedule:
A
BF
For the central heating and the DHW cylinder, start
time Cand end time D are dened in the daily
schedule so that selected operating status Eis
maintained in the room (central heating program)
or DHW cylinder (DHW program). Between these
times, the energy saving temperature (energy saving
operating status) is active. The times during which
the DHW circulation pump runs constantly are set in
the time program for the DHW circulation pump. The
periods for maintaining selected operating status E
are set in the time program for the buffer cylinder.
To change the parameters for the daily schedule,
ATime program section
BPeriods 1 to 5
CStarting time
DEnd time
EOperating status
FCommand (active during editing):
Apply
Delete
Add
C D
E
select the time program and press the navigation
rotary switch. The rst parameter(start time) ashes.
Turn the navigation rotary switch left/right to set the
new period (hours and minutes separately) and press
it again to conrm. The next display starts to ash
so that the next parameter (end time) can be edited.
The last editable position is a command. To save the
changes, select the "Save" command and press
the rotary switch to complete editing. To delete the
selected switching time, select the corresponding
switching time for editing. Press the rotary switch to
call up the "Command" position, select "Delete"
and press the rotary switch again. To add a new
period, select the last dened period, press the rotary
switch to call up the "Command" position, select
"Add" and press the rotary switch again to add the
new period (the process for editing a new period is
described above).
Control panel VMN3 (cont.)
Settings

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Control panel VMN3 (cont.)
TURBO function
If the building is cold and needs to be heated up
quickly, the TURBO function can be activated.
Provided that the conditions for switching on the
heating are met, this function starts the central heating
with maximum parameters and maintains these until
the required temperature has been reached in a room.
This function can be started automatically when the
room temperature falls by the hysteresis of the set
room temperature.
Automatic mode is set in the [Conguration > Turbo]
menu. Selecting "DHW cylinder – NO" switches off
DHW priority for the duration of Turbo operation. In
the "Party/Holiday/Manual" menu, it is possible to
switch on this function automatically (without DHW
heating priority), provided the room temperature is
lower than programmed. Sensor Tr is required to
switch on the Turbo function.
If no switching times have been dened, the period
00:00 to 23:59 is set after selecting "New". This should
be edited according to the user's requirements.
Press the "END" command to save the daily program
in the boiler settings.
Frost protection
If the room temperature drops below 7 °C and the
outside temperature drops below 2 °C in standby mode
and summer operation, central heating is activated.
Sensor Tr is required for activation.
The function is inactive when the boiler is controlled by
an external room temperature controller connected to
the room temperature input. In this case, activate frost
protection mode on the external controller. The boiler
then maintains the set temperature manually.
Settings

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Heating curve
The boiler control unit ensures that the correct
temperature is maintained in the central heating
installation depending on the outside temperature.
When there is a low outside temperature, the heat
demand inside the building is higher. On the other
hand, when there is a high outside temperature, it is
not necessary to maintain a high temperature inside
the installation. The correlation between the outside
temperature and the temperature of the heating
installation can be represented graphically with a
heating curve. The diagram below shows a summary
of the heating curves for a set room temperature of
22 °C. The corresponding heating curve must be
selected according to the building properties, climate
zone and type of heating installation.
If an offset of the heating curve is required, the
parameter [heating curve] must be changed. The
diagram below shows heating curve no. 12 with
an offset of -10 °C and 10 °C.
20,0
30,0
40,0
50,0
60,0
70,0
80,0
90,0
-20
-10010
20
Tch [°C]
Tout [°C]
n=4
n=6
n=8
n=10
n=12
n=14
n=16
n=18
n=20
n=22
n=24
A
AHeating curve no. (p = 0)
Tch [°C]
Tout [°C]
20,0
30,0
40,0
50,0
60,0
70,0
80,0
90,0
-20-1001020
n=12, p=10
n=12, p=0
n=12, p=-10
A
Ap – heating curve offset
Control panel VMN3 (cont.)
Settings

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Control panel VLN3
Operation
9
21 °
45 °
61°
9:37 Mo 12.08.201
ADisplay
BNavigation rotary switch for signal and
parameter display and settings
Turn button B(right or left) during the active winter or
summer program to switch between the function
displays on LCD screen A.
– Main display: Provides information on basic boiler
parameters (see table for details)
– Settings: Allows individual adjustment of the
parameters of the boiler and other heating circuits
according to the user's preferences
– Service/Conguration: Allows conguration of the
heating system according to the structural
conditions (available for the installation company
and contractors after entering the access code)
and displays the input and output signals for the
boiler as well as the current parameters
– PARTY/HOLIDAY: Allows the operating algorithm
to be changed quickly as required.
Note: The display is active while the DHW cylinder
is available.
– Operating mode.
Individual functions can be called up after selecting the
corresponding function display and pressing the rotary
selector. If a fault occurs in the boiler, the message
will be displayed on the main function screen. Press
the rotary switch to display a list of faults.

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Control panel VLN3 (cont.)
Operation
Main display
AHeat transfer display
BReturn temperature
CFlow temperature
D Preset ow temperature or symbol
(if heating is blocked by a signal from
the higher ranking appliance)
EDHW temperature
FActive DHW program
GDisplay for room temperature control contact
sealed unvented (central heating command)
Fault in appliance
Circulation pump in operation (ashing means that the minimum ow rate has not been reached)
Circulation pump is being vented
Heating signal blocked by master appliance
Central heating enabled
Heat demand from room thermostat (with internal controller switched off)
Heat transfer
DHW heating
Central heating
Central heating program version display:
According to the daily/weekly schedule
PARTY – maintain a pleasant DHW temperature
HOLIDAY – maintain a pleasant, energy saving DHW temperature or frost protection
Pasteurisation of DHW heating
9
21°
45°
61°
9:37 Mo 12.08.201 9
42°
65°
32°
85°
9:37 Mo 12.08.201