Page 1
Operating instructions
for the system user
OpenTherm room temperature controller with digital time switch
For Vitodens 100-W, 111-W and 050-W
VIESMANN
Room temperature controller
5837779 GB 12/2018
Please keep safe.
Page 2
Safety instructions
For your safety
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.
Target group
These operating instructions are
designed for heating system users.
This appliance can also be operated by
children 8 years and older, as well as
by individuals with reduced physical,
sensory or mental faculties or those
lacking in experience and knowledge,
provided such individuals are being
supervised or have been instructed in
the safe use of this appliance and any
risks arising from it.
Connecting the appliance
■ Connection and commissioning of the
appliance may only be carried out by
authorised contractors.
■ Only operate the appliance with suitable fuels.
■ Adhere to the electrical connection
requirements.
■ Modifications to the existing installation may only be carried out by
authorised contractors.
Note
Details identified by the word "Note"
contain additional information.
Please note
Supervise children in the prox-
!
imity of the appliance.
■ Never permit children to play
with the appliance.
■ Cleaning and maintenance
must not be carried out by
unsupervised children.
Danger
Incorrectly executed work on the
heating system can lead to life
threatening accidents.
■ Work on gas installations must
only be carried out by a registered gas fitter.
■ Work on electrical equipment
must only be carried out by a
qualified electrician.
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2
Page 3
Safety instructions
For your safety
Working on the appliance
■ When adjusting settings and carrying
out work on the appliance always follow the guidelines in these operating
instructions.
Additional work on the appliance may
only be carried out by authorised
contractors.
■ Never open the appliance.
■ Never remove the cladding.
Damage to the appliance
Danger
Damaged equipment poses a
safety hazard.
If you smell gas
Danger
Escaping gas can lead to explosions which may result in serious injury.
■ Do not smoke. Prevent naked
flames and sparks. Do not
switch lights or electrical appliances on or off.
■ Close the gas shut-off valve.
■ Open windows and doors.
(cont.)
■ Never remove or change additional
parts or installed accessories.
■ Never open or retighten pipe connections.
Danger
Hot surfaces can cause burns.
■ Never open the appliance.
■ Never touch the hot surfaces
of uninsulated pipes, fittings or
flue pipes.
Check the appliance for external
damage. Never start up a damaged appliance.
■ Evacuate any people from the
danger zone.
■ Notify your gas and power
supply utility and your local
heating contractor from outside the building.
■ Have the power supply to the
building shut off from a safe
place (outside the building).
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3
Page 4
Safety instructions
For your safety
If you smell flue gas
Danger
Flue gas can lead to life threatening poisoning.
■ Shut down the heating system.
■ Ventilate the installation site.
■ Close all doors in the living
space.
In case of fire
Danger
Fire presents a risk of burns and
explosion.
What to do if water escapes from the appliance
(cont.)
Emergency contact
If you smell gas or detect a gas leak
call the National Gas Emergency service on 0800 111 999. Notify your gas or
electricity supplier and your heating
contractor.
■ Shut off the electricity supply to the
building from a safe place (outside
the building).
■ Shut down the heating system.
■ Close the shut-off valves in
the fuel supply lines.
■ Use a tested fire extinguisher,
class ABC.
Danger
If water escapes from the appliance there is a risk of electrocution.
What to do if the heating system develops a fault
Danger
Fault messages indicate faults
in the heating system. If faults
are not rectified, they can have
life threatening consequences.
4
■ Switch OFF the heating system at the external isolator
(e.g. fuse box, domestic distribution board).
■ Notify heating contractor.
Do not acknowledge fault messages several times in quick
succession. Inform your heating
contractor so the cause can be
analysed and the fault rectified.
5837779
Page 5
Safety instructions
For your safety
Installation room requirements
Danger
Sealed vents result in a lack of
combustion air. This leads to
incomplete combustion and the
formation of life threatening carbon monoxide.
Never cover or close existing
vents.
Do not make any subsequent
modifications to the building
characteristics that could affect
safe operation (e.g. cable/pipework routing, cladding or partitions).
Danger
Easily flammable liquids and
materials (e.g. petrol, solvents,
cleaning agents, paints or
paper) can cause deflagration
and fire.
Never store or use such materials in the boiler room or in direct
proximity to the heating system.
(cont.)
Please note
Incorrect ambient conditions can
!
lead to heating system damage
and can put safe operation at
risk.
■ Ensure ambient temperatures
are above 0 °C and below
35 °C.
■ Prevent air contamination by
halogenated hydrocarbons
(e.g. as contained in paints,
solvents or cleaning fluids)
and excessive dust (e.g.
through grinding/polishing
work).
■ Avoid continuously high
humidity levels (e.g. through
continuous drying of washing).
Extractors
The operation of appliances that extract
air to the outside (cooker hoods, extractors, air conditioning units, etc.) can
create negative pressure. If the boiler is
operated at the same time, this can
lead to reverse flow of the flue gas.
5837779
Danger
The simultaneous operation of
the boiler and appliances that
extract air to the outside can
result in life threatening poisoning due to reverse flow of the
flue gas.
Take suitable steps to ensure an
adequate supply of combustion
air. If necessary, contact your
contractor.
5
Page 6
Safety instructions
For your safety
Auxiliary components, spare and wearing parts
Please note
Components not tested with the
!
heating system may damage the
system or affect its function.
(cont.)
Only allow qualified contractors
to carry out installation or
replacement work.
5837779
6
Page 7
Index
Index
Information
Symbols................................................................................................................ 9
Intended use......................................................................................................... 10
Introductory information
Control unit function modes.................................................................................. 11
Where to find the controls
Summary of controls and indicators..................................................................... 12
■ Controls and display elements.......................................................................... 12
■ Symbols on the display..................................................................................... 13
Commissioning
Heating system operating mode........................................................................... 15
Time program or operating mode......................................................................... 16
■ Selecting the time program or operating mode................................................. 16
■ Preset time programs........................................................................................ 16
■ Constant operating modes................................................................................ 17
■ Changing the selected time program and set temperatures............................. 18
Central heating
Selecting the operating mode............................................................................... 20
Temporarily changing the room temperature........................................................ 20
■ Temporarily changing the set room temperature.............................................. 20
■ Comfort mode................................................................................................... 20
■ Reduced mode.................................................................................................. 21
Permanently changing the room temperature...................................................... 21
■ Changing the heating curve for weather-compensated operation.................... 22
Changing the room temperature for a few days (holiday mode).......................... 24
■ Stopping or interrupting the holiday program.................................................... 25
DHW heating
Setting the time program and DHW temperature................................................. 26
■ Changing or deleting switching times............................................................... 26
■ Temporarily changing the DHW temperature.................................................... 26
Further adjustments
Time and date...................................................................................................... 27
Summer/wintertime.............................................................................................. 27
Further settings.................................................................................................... 27
Setting the language............................................................................................ 28
Changing the default display................................................................................ 28
Setting the contrast.............................................................................................. 29
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7
Page 8
Index
(cont.)
Index
Locking out controls (key lock)............................................................................. 29
■ Temporarily interrupting or unlocking key lock.................................................. 29
Changing the display format of fault messages................................................... 29
Returning all settings to their delivered condition................................................. 29
Checks
Checking information............................................................................................ 30
What to do if...
Rooms are too cold.............................................................................................. 31
Rooms are too hot................................................................................................ 31
Carrying out a reset.............................................................................................. 32
Maintenance
Cleaning............................................................................................................... 33
Appendix
Menu structure in setting mode (MODE).............................................................. 34
Menu structure in settings.................................................................................... 34
Keyword index.................................................................................................... 36
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8
Page 9
1.
Symbols
Information
Symbol
Meaning
Reference to other document
containing further information
Step in a diagram:
The numbers correspond to
the order in which the steps
are carried out.
Warning of material losses and
environmental pollution
Live electrical area
Pay particular attention.
■ Component must audibly
click into place.
or
■ Acoustic signal
■ Fit new component.
or
■ In conjunction with a tool:
Clean the surface.
Dispose of component correctly.
Dispose of component at a
suitable collection point. Do
not dispose of component in
domestic waste.
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9
Page 10
Information
Intended use
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 fixed
installation in conjunction with permissible, system-specific components has
been carried out.
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
modified from their intended use (e.g. if
the flue gas and ventilation air paths
are sealed).
10
5837779
Page 11
Control unit function modes
Introductory information
Your heating contractor set the function
mode during commissioning.
Two function modes are possible:
■ Room temperature-dependent operation: If no outside temperature sensor
and no heating circuit with mixer is
connected, function mode "ROOM-
CONTROL" must be selected.
■ Weather-compensated operation: If
an outside temperature sensor and a
heating circuit with mixer are connected, function mode "OT CONTROL"
must be selected.
The settings you can make vary
depending on the function mode selected.
Note
DHW heating is active continuously or
in accordance with the set switching
times, regardless of the function mode
set.
Function mode set by the heating
contractor
"ROOM-CONTROL" (room tem-
=
perature-dependent operation)
"OT CONTROL" (weather-com-
=
pensated operation)
Note
You will have to select the function
mode again following a reset.
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11
Page 12
08:26
21 3
A B
D C
ROOM TEMP
MODE PARTY ECO INFO
°
c
Where to find the controls
Summary of controls and indicators
Controls and display elements
Display
A
Rotary selector for changing the
B
temperature/value
12
Keys
C
Reset (see page 32)
D
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Page 13
AK
H
B
C
E
F
G
08:26
21 3
ROOM TEMP
MODE PARTY ECO INFO
°
c
D
A B C
ESC OK
Where to find the controls
Summary of controls and indicators
Symbols on the display
These symbols are not always displayed, but appear subject to operating
conditions.
Time
A
Text line
B
Temperature display
C
Weather-compensated mode
D
Operating display
E
F
G
H
K
(cont.)
Function display
Keys
Weekday
Time program (set switching times)
Controls
Step back in the menu/exit menu
A
(Esc)
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13
Page 14
08:26
°
C
21 3
Where to find the controls
Summary of controls and indicators
+/-: Change value
B
/ : Scroll through menu
Confirm selection
C
Save value
Default display
When idle, the screen always shows
the room temperature, time and (subject to settings) selected time phases
as the default display.
Press INFO to access control mode.
Information on operation
You can perform most setting and
selection procedures using the +/- keys
or the rotary selector.
The following only describes how to
control the device using the keys.
(cont.)
14
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Page 15
Heating system operating mode
Depending on the installation and settings, your heating system is either
room temperature-dependent or
weather-compensated in conjunction
with an outside temperature sensor.
■ In room temperature-dependent
mode, the set room temperature is
controlled via the flow temperature.
■ In weather-compensated mode
with room influence, the set room
temperature is controlled via the
selected heating curve and room
influence factor. The room influence
factor can be set by your local heating contractor.
■ In weather-compensated mode
without room influence, the room
temperature is controlled via thermostatic valves. At the temperature levels Comfort 1 to 3 and Party, the flow
temperature is controlled according
to the selected heating curve. In
reduced mode (setback mode and
eco mode), the flow temperature is
reduced by a parallel shift of the
heating curve. The setting of the
heating curve and the height of the
parallel shift can be changed by your
heating contractor.
Commissioning
Note
In weather-compensated mode without room influence, choosing temperature levels Comfort 1 to 3 or Party
does not result in different room temperatures.
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15
Page 16
Commissioning
Time program or operating mode
You can choose between 3 preset time
programs (P1 to P3) or select a permanent operating mode. You can change
the switching times of the time programs individually. See page 18.
For each time phase, you can choose
between the following preselected set
room temperatures (temperature level):
■ "COMFORT 1"
■ "COMFORT 2"
■ "COMFORT 3"
■ "REDUCED TEMP"
■ "FROST PROTECTION"
See page 18 for how to permanently
change the set room temperatures.
If your room temperature controller
acts on 2 heating circuits:
The set time program affects both heating circuits.
Selecting the time program or operating mode
Press the following keys:
1. Press INFO.
2. Press MODE.
3. Select the required time program
with / .
In the delivered condition, time program P1 is set.
4. OK to confirm
Preset time programs
Time program P1
Central heating in accordance with the
following time program:
Monday to Friday
■ 06:00 to 22:00 h:
Central heating with standard room
temperature (Comfort 1)
■ 22:00 to 06:00 h:
Central heating with reduced room
temperature
Saturday and Sunday
■ 07:00 to 23:00 h:
Central heating with standard room
temperature (Comfort 1)
■ 23:00 to 07:00 h:
Central heating with reduced room
temperature
Time program P2
Central heating in accordance with the
following time program:
16
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Page 17
Commissioning
Time program or operating mode
Monday to Friday
■ 06:00 to 08:00 h and 16:00 to
22:00 h:
Central heating with standard room
temperature (Comfort 1)
■ 08:00 to 16:00 h and 22:00 to
06:00 h:
Central heating with reduced room
temperature
Saturday and Sunday
■ 07:00 to 23:00 h:
Central heating with standard room
temperature (Comfort 1)
■ 23:00 to 07:00 h:
Central heating with reduced room
temperature
Constant operating modes
You can set the following operating
modes:
■ "PERM COMFORT": Continuous
operation with standard room temperature
■ "PERM REDUCED": Continuous
operation with reduced room temperature
■ "FROST PROTECTION":
(cont.)
Time program P3
Central heating in accordance with the
following time program:
Monday to Friday
■ 12:00 to 20:00 h:
Central heating with standard room
temperature (Comfort 1)
■ 20:00 to 12:00 h:
Central heating with reduced room
temperature
Saturday and Sunday
■ 07:00 to 22:00 h:
Central heating with standard room
temperature (Comfort 1)
■ 22:00 to 07:00 h:
Central heating with reduced room
temperature
Frost protection mode:
– For room temperature-dependent
operation: At room temperatures
below + 6 °C.
– For weather-compensated opera-
tion: At outside temperatures below
+ 3 °C.
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17
Page 18
Commissioning
Time program or operating mode
(cont.)
Changing the selected time program and set temperatures
You can set the following days and
groups of days:
■ Entire week (1 to 7)
■ Monday to Friday (1 to 5)
■ Saturday and Sunday (6 and 7)
■ Individual days (1, 2, 3, ...7)
Changing existing time phases
Press the following keys:
01. INFO
02. MODE
03.
Select "SETTINGS" with / .
04. OK to confirm
05. Select "PROGRAMMING" with
/ .
06. OK to confirm
07. Select the required program with
/ .
12. OK to confirm
13. +/- for the required temperature
level (e.g. Comfort 1)
14. OK to confirm
15. +/- for hour (start time)
16. OK to confirm
17. +/- for minute (start time)
18. OK to confirm
19. ■ OK to change further switching
times.
■ ESC to exit programming.
Creating new time phases
Press the following keys:
01. INFO
02. MODE
08. OK to confirm
09. EDIT, "CHANGE" appears.
10. ■ OK to confirm, to change the
switching time.
Days flash.
■
/ for "CLEAR" and OK, to
delete the switching time.
11. +/- for the required group of days
or single day
18
03.
Select "SETTINGS" with / .
04. OK to confirm
05. Select "PROGRAMMING" with
/ .
06. OK to confirm
07. Select the required program with
/ .
08. OK to confirm
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Page 19
Commissioning
Time program or operating mode
09. NEW
Days flash.
10. +/- for the required group of days
or single day
11. OK to confirm
12. +/- for the required temperature
level (e.g. Comfort 1)
13. OK to confirm
14. +/- for hour (start time)
15. OK to confirm
16. +/- for minute (start time)
17. OK to confirm
18. ■ OK to change further switching
times.
■ ESC to exit programming.
(cont.)
07. Select the required program with
/ .
08. OK to confirm
09. Press NEXT to call up the set
switching times one after another.
10. ESC to exit programming.
Deleting the time program
Press the following keys:
01. INFO
02. MODE
03.
Select "SETTINGS" with / .
04. OK to confirm
05. Select "PROGRAMMING" with
/ .
Calling up switching times
Press the following keys:
01. INFO
02. MODE
03.
Select "SETTINGS" with / .
04. OK to confirm
05. Select "PROGRAMMING" with
/ .
06. OK to confirm
5837779
06. OK to confirm
07. Select the required program with
/ "CLEAR P...".
08. OK to confirm
09.
Select "CLEAR PROG" with / .
10. OK to confirm
Confirm appears.
11. OK to confirm
12. ESC to exit programming.
19
Page 20
Central heating
Selecting the operating mode
You can choose between the following
time programs and operating modes:
■ "P 1" to "P 3"
Alternating operation with standard
and reduced room temperature
according to the set switching times.
■ "PERM COMFORT"
Continuous comfort mode
■ "PERM REDUCED"
Continuous reduced mode
■ "FROST PROTECTION"
Continuous frost protection mode
See page 16 for how to select the operating mode.
Temporarily changing the room temperature
Temporarily changing the set room temperature
You can change the room temperature
for a short time, regardless of the selected operating program. The change
remains in force until the next operating
program changeover.
1. Press INFO to access control
mode.
2. ■ Room temperature-dependent
mode or weather-compensated
mode with room influence:
Use the rotary selector to set the
required increase or decrease in
the set room temperature in °C.
■ Weather-compensated mode
without room influence:
Use the rotary selector to set a
value from -5 to +5 for the
required increase or decrease in
the flow temperature. Value 1
means increasing or decreasing
the flow temperature by 5 °C.
This temporarily changes the
room temperature.
Comfort mode
In comfort mode, the room temperature
is regulated to a preselected set value
(delivered condition: 23 °C). You can
change the preselected set value.
The setting remains in force until the
next operating program changeover.
1. Press INFO to access control
mode.
20
2. Press PARTY. The selected set
room temperature appears.
3. Use the rotary selector to set the
required increase or reduction of
the set room temperature.
PARTY is displayed.
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Page 21
Central heating
Temporarily changing the room temperature
Ending comfort mode early
1. Press PARTY. "PARTY OFF"
appears.
2. Press OK to end comfort mode.
Reduced mode
In reduced mode, the room temperature is regulated to a preselected set
value (delivered condition: 17 °C). You
can change the preselected set value.
The setting remains in force until the
next operating program changeover.
1. Press INFO to access control
mode.
2. Press ECO. The selected set room
temperature appears.
3. Use the rotary selector to set the
required increase or reduction of
the set room temperature.
Ending reduced mode early
1. Press ECO. "ECO OFF" appears.
2. Press OK to end reduced mode.
Permanently changing the room temperature
(cont.)
You can permanently change the following preselected set room temperatures:
■ "COMFORT 1" (delivered condition
21 °C)
■ "COMFORT 2" (delivered condition
22 °C)
■ "COMFORT 3" (delivered condition
23 °C)
■ "REDUCED TEMP" (delivered condition 17 °C)
■ "FROST PROTECTION" (delivered
condition 6 °C)
Choose the preselected set room temperatures for the time phases in the
time programs, for example.
5837779
Press the following keys:
1. INFO
2. MODE
3.
Select "SETTINGS" with / .
4. OK to confirm
5. Select "TARGET TEMP" with
/ .
6. OK to confirm
"COMFORT 3" is displayed and
the value flashes.
21
Page 22
Outside temperature in °C
Flow temperature in °C
90
80
70
60
50
40
30
0 -5 -10 -15510
20
152025 -20
A
B
Central heating
Permanently changing the room temperature
7. Use +/- to change or press OK to
move to the next setting (e.g.
"COMFORT 1").
8. OK to confirm
The next setting appears.
9. Change with +/- or press ESC to
exit programming.
(cont.)
Changing the heating curve for weather-compensated operation
In weather-compensated operation, the
room temperature is controlled according to a preset heating curve.
If your room temperature controller acts
on 2 heating circuits, a heating curve is
preset for each heating circuit.
The heating curves show the relationship between the outside temperature
and the boiler water temperature or
flow temperature. The lower the outside
temperature, the higher the boiler water
or flow temperature. The heating curve
is limited upwards by the maximum set
flow temperature. The maximum set
flow temperature can only be changed
by your heating contractor.
Low end
A
22
End point
B
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Page 23
Central heating
Permanently changing the room temperature
The line shows the curve for the standard room temperature. The delivered
condition is shown.
The heating curve is changed with
"LOW END", "END POINT" and
"SHIFT", which influences the room
temperature.
Changing the heating characteristics to change the room temperature
Heating characteristics Measure
The living space is too cold during the
heating season
The living space is too hot during the
heating season
The living space is too cold during
spring/autumn and during the heating
season
The living space is too hot during
spring/autumn and during the heating
season
The living space is too cold during
spring/autumn
The living space is too hot during
spring/autumn, but warm enough the
heating season
The living space is too cold in reduced
mode
The living space is too hot in reduced
mode
Shifting the heating curve means
reducing the flow temperature for
reduced mode. The value of "SHIFT"
acts on both heating circuits.
Set the "END POINT" to a higher value (e.g. 80 °C)
Set the "END POINT" to a lower value
(e.g. 70 °C)
Set the "END POINT" and "LOW
END" to a higher value (low end e.g.
30 °C; end point e.g. 80 °C)
Set the "END POINT" and "LOW
END" to a lower value (low end e.g.
20 °C; end point e.g. 70 °C)
Set the "LOW END" to a higher value
(e.g. 30 °C)
Set the "LOW END" to a lower value
(e.g. 20 °C)
Set the "SHIFT" to a lower value (e.g.
20 °C)
Set the "SHIFT" to a higher value (e.g.
30 °C)
(cont.)
Setting a heating curve
Press the following keys:
01. INFO
02. MODE
03.
Select "SETTINGS" with / .
04. OK to confirm
5837779
05.
Select "CONTROL" with / .
06. OK to confirm
07.
Use / to select "OT CONTROL".
23
Page 24
Central heating
Permanently changing the room temperature
08.
Use / to select the required
setting:
■ – "LOW END" for heating circuit
without mixer
– "LOW END 2" for heating cir-
cuit with mixer
■ – "END POINT" for heating circuit without mixer
– "END POINT 2" for heating
circuit with mixer
■ – "SHIFT" for heating circuit
without mixer
– "SHIFT 2" for heating circuit
with mixer
09. OK to confirm
10. Use +/- or the rotary selector to
change the setting.
11. OK to confirm
12. ESC to exit the settings.
(cont.)
Changing the room temperature for a few days (holiday mode)
The holiday program starts on the set
leaving day and ends on the set return
day. The set time program is then
active again.
07. Change with +/-.
08. OK to confirm
The month flashes.
Press the following keys:
01. INFO
02. MODE
03.
Select "SETTINGS" with / .
04. OK to confirm
05.
Select "HOLIDAY" with / .
06. OK to confirm
START HOLIDAY appears briefly,
then the year flashes.
24
09. Change with +/-.
10. OK to confirm
The day flashes.
11. Set the day and hour in the same
way, and press OK to confirm.
END HOLIDAY appears.
12. Set END HOLIDAY the same way.
13. "FROST PROTECTION" appears.
Set the required set temperature.
14. OK to confirm
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Page 25
Central heating
Changing the room temperature for a few days…
Stopping or interrupting the holiday program
Stopping the holiday program
1. Press OFF.
"HOLIDAY OFF" appears.
2. OK to confirm
The holiday program is interrupted.
Reactivating the holiday program
1. INFO
2. MODE
3.
Select "SETTINGS" with / .
4. OK to confirm
5.
Select "HOLIDAY" with / .
6. OK to confirm
"REACTIVATE" appears.
7. OK to confirm
HOLIDAY appears.
(cont.)
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25
Page 26
DHW heating
Setting the time program and DHW temperature
You can set time phases for DHW heating:
■ The DHW cylinder is heated during
the set time phases when using a
boiler with a DHW cylinder connected
to it.
■ If using a boiler with an integral
instantaneous water heater, the DHW
is kept at the set temperature during
the set time phases.
Press the following keys:
01. INFO
02. MODE
03.
Select "SETTINGS" with / .
04. OK to confirm
05. Select "PROGRAMMING" with
/ .
06. OK to confirm
07.
Select "HOT WATER" with / .
08. OK to confirm
09. NEW
Days flash.
10. +/- for the required group of days
or single day
11. OK to confirm
12. +/- for the required set DHW tem-
perature
13. OK to confirm
14. +/- for hour
15. OK to confirm
16. +/- for minute
17. OK to confirm
18. ■ OK to set further switching
times.
■ ESC to exit programming.
Changing or deleting switching times
See page 18.
Temporarily changing the DHW temperature
You can change the DHW temperature
for one hour.
1. Press INFO repeatedly until "HW
SETPOINT TEMP" appears.
26
2. Select the required set DHW tem-
perature with the rotary selector.
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Time and date
Further adjustments
Press the following keys:
1. INFO
2. MODE
3.
Select "SETTINGS" with / .
4. OK to confirm
5.
Select "TIME/DATE" with / .
Summer/wintertime
Press the following keys:
1. INFO
2. MODE
3.
Select "SETTINGS" with / .
4. OK to confirm
5.
Select "TIME/DATE" with / .
6. OK to confirm
7. Press +/- to make the required set-
ting.
8. OK to confirm and to move to the
next setting.
9. ESC to exit programming.
6. Press OK repeatedly until "SU/WI
RULE" appears.
7.
Press / to select the required
setting.
8. OK to confirm
9. ESC to exit programming.
Further settings
You can make further settings under
"OPTIONS". For further information on
settings, see the following chapters.
Press the following keys:
1. INFO
2. MODE
3.
Select "SETTINGS" with / .
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4. OK to confirm
5.
Select "OPTIONS" with / .
6. OK to confirm
7.
Press / to select the required
setting.
See following chapter.
8. ESC to exit programming.
27
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08:26
°
C
21 3
c
°
21.3
12:00
ROOM TEMP
08:26
21.3
°
c
Further adjustments
Setting the language
1. Confirm "LANGUAGE" with OK.
2. +/- for the required language
Changing the default display
1. Confirm "DISPLAY" with OK. 2. +/- for the required display version
Setting Display version
1
2
3. OK to confirm
3
3. OK to confirm
28
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Setting the contrast
Further adjustments
You can change the display contrast in
stages.
1. Confirm "CONTRAST" with OK.
2. Use +/- to set the required value (0
to 15).
3. OK to confirm
Locking out controls (key lock)
You can lock out the controls by switching on key lock.
1. Confirm "KEY LOCK" with OK.
2. Press +/- to select "WITH KEYLOCK" or "NO KEYLOCK".
3. OK to confirm
The display then shows only "KEY
LOCK" and a key symbol.
Temporarily interrupting or unlocking key lock
Press and hold INFO for longer than 3
seconds.
You can then temporarily operate the
device or unlock the key lock. See
above.
Changing the display format of fault messages
1. Press OK to confirm the "ERROR
FORMAT".
2. Press +/- to select "HEXADECIMAL".
Do not adjust "DECIMAL".
3. OK to confirm
Returning all settings to their delivered condition
All settings made after commissioning
will be lost.
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1. Confirm "FACTORY SET" with OK.
"CONFIRM" appears.
2. OK to confirm
29
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Checks
Checking information
You can check the following information
with INFO:
■ Current outside temperature
■ Active time program
■ Fault messages
■ Set flow temperature
■ Actual flow temperature
■ Date and time
Press INFO repeatedly until the
required information appears.
30
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Rooms are too cold
Cause Remedy
The room temperature controller is incorrectly set.
Note
For further causes, see the boiler operating instructions
Check the settings and correct if required:
■ Program
■ Room temperature
■ Time
Rooms are too hot
Cause Remedy
The room temperature controller is incorrectly set.
Check the settings and correct if required:
■ Program
■ Room temperature
■ Time
What to do if...
Note
For further causes, see the boiler operating instructions
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What to do if...
Carrying out a reset
Press the reset button with a suitable
instrument.
32
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Cleaning
This device can be cleaned with a commercially available domestic cleaning
agent. Never use any scouring agents.
Maintenance
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Appendix
Menu structure in setting mode (MODE)
MODE
P1 ACTIVE
ACTIVATE P2
P2 ACTIVE
ACTIVATE P3
Menu structure in settings
SETTINGS
TARGET TEMP
COMFORT 3
COMFORT 2
COMFORT 1
REDUCED TEMP
FROST PROTECTION
TIME/DATE
HOUR
MINUTE
YEAR
MONTH
DAY
SU/WI RULE
PROGRAMMING
PROG P1
PROG P2
PROG P3
HOT WATER
CLEAR PROG
PERM COMFORT
PERM REDUCED
FROST PROTECTION
SETTINGS
HOLIDAY
START HOLIDAY
YEAR
MONTH
DAY
HOUR
END HOLIDAY
FROST PROTECTION
OPTIONS
LANGUAGE
DISPLAY
LCD BACKLIGHT
CONTRAST
KEY LOCK
ERROR FORMAT
FACTORY SET
SERVICE
WALL COMP
OPTIMISE
EXT INPUT
DEVICE TYPE
CONTROL
SERVICE
CHIMNEY SWEEP
INFO
TSP-PARAMETER
34
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Appendix
Menu structure in settings
Note
Menu point TSP-PARAMETER only
appears if the room temperature controller acts on heating circuits (mixer
extension kit).
(cont.)
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Keyword index
Keyword index
C
Checks............................................... 30
Cleaning.............................................33
Contrast, setting.................................29
Controls..............................................13
– Locking out..................................... 29
Controls and display elements...........12
D
Default display, changing...................28
DHW.................................................. 26
DHW temperature
– Changing........................................ 26
Display............................................... 13
Display screen................................... 13
H
Heating characteristics.......................23
Heating curve
– Explanation.....................................22
Holiday mode..................................... 24
K
Key lock............................................. 29
L
Language, setting.............................. 28
O
Operating mode........................... 16, 20
Operating mode, selecting................. 20
R
Reset..................................................32
Room temperature
– Changing.................................. 20, 21
– Changing for a few days.................24
– Permanently changing....................21
– Temporarily changing..................... 20
S
Summer/wintertime............................ 27
Switching times.................................. 16
– Changing........................................ 18
T
Temperatures
– Changing........................................ 18
Temperatures, checking.....................30
Time and date.................................... 27
Time program.....................................16
Troubleshooting................................. 31
36
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Your contact
Contact your local contractor if you have any questions about your system or wish
to arrange maintenance or repair work. You can find local contractors on the internet at www.viessmann.de.
Viessmann Werke GmbH & Co. KG
D-35107 Allendorf
Telephone: +49 6452 70-0
Fax: +49 6452 70-2780
www.viessmann.com
40
Viessmann Limited
Hortonwood 30, Telford
Shropshire, TF1 7YP, GB
Telephone: +44 1952 675000
Fax: +44 1952 675040
E-mail: info-uk@viessmann.com
5837779 Subject to technical modifications.
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