Viessmann OpenTherm User manual

Operating instructions
for the system user
VIESMANN
OpenTherm room temperature controller with digital time switch
For Vitodens 100-W, 111-W and 050-W
Room temperature controller
5837779 GB 12/2018 Please keep safe.

2
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 envi-
ronmental pollution.
Note
Details identified by the word "Note"
contain additional information.
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.
!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.
Connecting the appliance
■ Connection and commissioning of the
appliance may only be carried out by
authorised contractors.
■ Only operate the appliance with suit-
able fuels.
■ Adhere to the electrical connection
requirements.
■ Modifications to the existing installa-
tion may only be carried out by
authorised contractors.
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 regis-
tered gas fitter.
■ Work on electrical equipment
must only be carried out by a
qualified electrician.
Safety instructions
For your safety
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3
Working on the appliance
■ When adjusting settings and carrying
out work on the appliance always fol-
low 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.
■ Never remove or change additional
parts or installed accessories.
■ Never open or retighten pipe connec-
tions.
Danger
Hot surfaces can cause burns.
■ Never open the appliance.
■ Never touch the hot surfaces
of uninsulated pipes, fittings or
flue pipes.
Damage to the appliance
Danger
Damaged equipment poses a
safety hazard.
Check the appliance for external
damage. Never start up a dam-
aged appliance.
If you smell gas
Danger
Escaping gas can lead to explo-
sions which may result in seri-
ous injury.
■ Do not smoke. Prevent naked
flames and sparks. Do not
switch lights or electrical appli-
ances on or off.
■ Close the gas shut-off valve.
■ Open windows and doors.
■ Evacuate any people from the
danger zone.
■ Notify your gas and power
supply utility and your local
heating contractor from out-
side the building.
■ Have the power supply to the
building shut off from a safe
place (outside the building).
Safety instructions
For your safety (cont.)
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4
If you smell flue gas
Danger
Flue gas can lead to life threat-
ening poisoning.
■ Shut down the heating sys-
tem.
■ Ventilate the installation site.
■ Close all doors in the living
space.
Emergency contact
If you smell gas or detect a gas leak
call the National Gas Emergency serv-
ice 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).
In case of fire
Danger
Fire presents a risk of burns and
explosion.
■ Shut down the heating sys-
tem.
■ Close the shut-off valves in
the fuel supply lines.
■ Use a tested fire extinguisher,
class ABC.
What to do if water escapes from the appliance
Danger
If water escapes from the appli-
ance there is a risk of electrocu-
tion.
■ Switch OFF the heating sys-
tem at the external isolator
(e.g. fuse box, domestic distri-
bution board).
■ Notify heating contractor.
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.
Do not acknowledge fault mes-
sages several times in quick
succession. Inform your heating
contractor so the cause can be
analysed and the fault rectified.
Safety instructions
For your safety (cont.)
5837779

5
Installation room requirements
Danger
Sealed vents result in a lack of
combustion air. This leads to
incomplete combustion and the
formation of life threatening car-
bon 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/pipe-
work routing, cladding or parti-
tions).
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 materi-
als in the boiler room or in direct
proximity to the heating system.
!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, extrac-
tors, 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.
Danger
The simultaneous operation of
the boiler and appliances that
extract air to the outside can
result in life threatening poison-
ing due to reverse flow of the
flue gas.
Take suitable steps to ensure an
adequate supply of combustion
air. If necessary, contact your
contractor.
Safety instructions
For your safety (cont.)
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6
Auxiliary components, spare and wearing parts
!Please note
Components not tested with the
heating system may damage the
system or affect its function.
Only allow qualified contractors
to carry out installation or
replacement work.
Safety instructions
For your safety (cont.)
5837779

7
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
Index
Index
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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
Index
Index (cont.)
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9
Sym-
bol
Meaning
Reference to other document
containing further information
1.
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 correct-
ly.
Dispose of component at a
suitable collection point. Do
not dispose of component in
domestic waste.
Information
Symbols
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10
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 permissi-
ble, 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 prohibi-
ted and will result in an exclusion of lia-
bility. 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).
Information
Intended use
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11
Your heating contractor set the function
mode during commissioning.
Two function modes are possible:
■ Room temperature-dependent opera-
tion: 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 connec-
ted, function mode "OT CONTROL"
must be selected.
The settings you can make vary
depending on the function mode selec-
ted.
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.
Introductory information
Control unit function modes
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12
Controls and display elements
08:26
21 3
A B
D C
ROOM TEMP
MODE PARTY ECO INFO
°c
ADisplay
BRotary selector for changing the
temperature/value
CKeys
DReset (see page 32)
Where to find the controls
Summary of controls and indicators
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Symbols on the display
These symbols are not always dis-
played, but appear subject to operating
conditions.
AK
H
B
C
E
F
G
08:26
21 3
ROOM TEMP
MODE PARTY ECO INFO
°cD
ATime
BText line
CTemperature display
DWeather-compensated mode
EOperating display
FFunction display
GKeys
HWeekday
KTime program (set switching times)
Controls
A B C
ESC OK
AStep back in the menu/exit menu
(Esc)
Where to find the controls
Summary of controls and indicators (cont.)
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B+/-: Change value
/ : Scroll through menu
CConfirm selection
Save value
Default display
08:26
°C
21 3
When idle, the screen always shows
the room temperature, time and (sub-
ject 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.
Where to find the controls
Summary of controls and indicators (cont.)
5837779

15
Depending on the installation and set-
tings, 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 heat-
ing contractor.
■ In weather-compensated mode
without room influence, the room
temperature is controlled via thermo-
static valves. At the temperature lev-
els 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.
Note
In weather-compensated mode with-
out room influence, choosing temper-
ature levels Comfort 1 to 3 or Party
does not result in different room tem-
peratures.
Commissioning
Heating system operating mode
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You can choose between 3 preset time
programs (P1 to P3) or select a perma-
nent operating mode. You can change
the switching times of the time pro-
grams 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 heat-
ing 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 pro-
gram 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:
Commissioning
Time program or operating mode
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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
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
Constant operating modes
You can set the following operating
modes:
■"PERM COMFORT": Continuous
operation with standard room temper-
ature
■"PERM REDUCED": Continuous
operation with reduced room temper-
ature
■"FROST PROTECTION":
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.
Commissioning
Time program or operating mode (cont.)
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18
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
/ .
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
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
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
Commissioning
Time program or operating mode (cont.)
5837779

19
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.
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
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
/ .
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.
Commissioning
Time program or operating mode (cont.)
5837779

20
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 oper-
ating 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 selec-
ted 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.
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.
Central heating
Selecting the operating mode
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