Viessmann VITOCROSSAL CI User manual

Operating instructions
for the system user
VIESMANN
Vitocrossal, type CI
with Vitotronic 200 control unit, type GW7B, for weather-compensated operation
VITOCROSSAL
5814953 GB 1/2018 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 environmental pollution.
Note
Details identified by the word "Note" contain additional
information.
Target group
These operating instructions are intended 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 individu-
als 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 proximity of the appli-
ance.
■Never permit children to play with the appli-
ance.
■Cleaning and maintenance must not be car-
ried out by unsupervised children.
Appliance connection
■The appliance may only be connected and commis-
sioned by authorised contractors.
■Only operate the appliance with suitable fuels.
■Observe the specified electrical connection require-
ments.
■Modifications to the existing installation 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 registered gas fitter.
■Work on electrical equipment must only be
carried out by a qualified electrician.
Work on the appliance
■All settings and work on the appliance must be car-
ried out as specified in these operating instructions.
Further work on the appliance may only be carried
out by authorised contractors.
■Never open the appliance.
■Never remove casings.
■Never change or remove attachments or fitted
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.
Damage to the appliance
Danger
Damaged equipment poses a safety hazard.
Check the appliance for external damage. Never
start up a damaged appliance.
Safety instructions
For your safety
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If you smell gas
Danger
Escaping gas can lead to explosions 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.
■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).
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.
■Shut down the heating system.
■Close the shut-off valves in the fuel supply
lines.
■Use a tested fire extinguisher, class ABC.
In case of water leaking from the appliance
Danger
Water leaking from the appliance poses an elec-
trocution hazard.
■Switch off the heating system at the external
isolation point (e.g. fuse box, domestic power
distribution unit).
■Notify your local heating contractor.
What to do if the heating system develops a fault
Danger
Fault messages point to faults in the heating
system. If faults are not rectified, they can have
life threatening consequences.
Never acknowledge fault messages 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.)
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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.
Never 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.
naphtha, solvents, cleaning agents, paints or
paper) can cause deflagration and fire.
Never store or use such materials in the installa-
tion 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, sol-
vents 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 out-
side (cooker hoods, extractors, air conditioning units,
etc.) can create negative pressure. If the boiler is oper-
ated at the same time, this can lead to a 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 poisoning due to
reverse flow of the flue gas.
Take suitable steps to ensure an adequate sup-
ply of combustion air. If necessary, contact your
heating contractor.
Auxiliary components, spare and wearing parts
!Please note
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 qualified contractors.
Safety instructions
For your safety (cont.)
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1. Information Symbols ................................................................................................. 7
Intended use .......................................................................................... 7
2. Introductory information Commissioning ...................................................................................... 8
Terminology ........................................................................................... 8
Your system is preset ............................................................................ 8
Tips on saving energy ............................................................................ 8
Tips for greater comfort ......................................................................... 9
3. Operation Opening the control unit ......................................................................... 10
Programming unit .................................................................................. 10
■"Help" menu ........................................................................................ 10
■Symbols .............................................................................................. 11
Standard menu ...................................................................................... 11
Extended menu ...................................................................................... 12
How to use the controls ......................................................................... 12
Operating program ................................................................................. 14
■Operating programs for central heating, DHW, frost protection .......... 14
■Special operating programs ................................................................ 14
Time program ........................................................................................ 14
■Setting a time program, using central heating as an example ............ 15
■Setting the time program effectively ................................................... 15
■Deleting time phases .......................................................................... 16
4. Start-up/shutdown Switching on the heating system ........................................................... 17
Shutting down the heating system ......................................................... 17
■With frost protection monitoring .......................................................... 17
■Without frost protection monitoring (shutdown) .................................. 18
5. Central heating Room temperature ................................................................................. 19
■Setting the standard room temperature .............................................. 19
■Setting the reduced room temperature ............................................... 19
Heating program .................................................................................... 19
■Setting the operating program ............................................................ 19
Time program ........................................................................................ 19
■Setting the time program for central heating ...................................... 20
Heating curve ......................................................................................... 20
■Setting the heating curve .................................................................... 20
Stopping central heating ........................................................................ 20
Comfort function "Party mode" ............................................................ 21
■Setting "Party mode" ........................................................................ 21
■Terminating "Party mode" ................................................................. 21
Energy saving function "Economy mode" ........................................... 21
■Setting "Economy mode" ................................................................. 21
■Terminating "Economy mode" .......................................................... 22
"Holiday program" energy saving function ............................................. 22
■Setting the "Holiday program" ......................................................... 22
■Cancelling or deleting the "Holiday program" .................................. 23
6. DHW heating DHW temperature .................................................................................. 24
Heating program .................................................................................... 24
■Setting the operating program for DHW heating ................................ 24
Time program ........................................................................................ 24
■Setting the time program for DHW heating ......................................... 24
■DHW heating once, outside the time program .................................... 25
■Setting the time program for the DHW circulation pump .................... 25
Switching off DHW heating .................................................................... 25
7. Further adjustments Setting the display contrast .................................................................... 26
Setting the display brightness ................................................................ 26
Index
Index
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Naming heating circuits ......................................................................... 26
Setting the preferred heating circuit for the standard menu .................. 27
Setting the time and date ....................................................................... 27
Setting the language .............................................................................. 27
Setting the temperature unit (°C/°F) ...................................................... 27
Restoring factory settings ...................................................................... 28
8. Calling up information Scanning information ............................................................................. 29
Scanning service messages .................................................................. 29
Scanning fault messages ....................................................................... 31
9. Emissions test mode ................................................................................................................ 32
10. What to do if... Rooms are too cold ................................................................................ 33
Rooms are too hot ................................................................................. 34
There is no hot water ............................................................................. 34
The DHW is too hot ............................................................................... 34
ã flashes and "Fault" is displayed ....................................................... 35
ë flashes and "Service" is displayed ................................................... 35
"Controls locked out" is displayed ...................................................... 35
"External hook-up" is displayed .......................................................... 35
"External program" is displayed .......................................................... 35
11. Maintenance Cleaning ................................................................................................. 36
Inspection and maintenance .................................................................. 36
■Appliance ............................................................................................ 36
■DHW cylinder (if installed) .................................................................. 36
■Safety valve (DHW cylinder) ............................................................... 36
■Potable water filter (if installed) .......................................................... 36
Damaged cables / lines ......................................................................... 37
12. Appendix Overview of extended menu .................................................................. 38
Scanning options under "Information" ................................................. 38
Terminology ........................................................................................... 39
13. Keyword index ................................................................................................................ 43
Index
Index (cont.)
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Symbol 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 environ-
mental 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 sur-
face.
Dispose of component correctly.
Dispose of component at a suitable collec-
tion point. Do not dispose of component in
domestic waste.
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 instruc-
tions. 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 compo-
nents 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 man-
ufacturer 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 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).
Information
Symbols
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The commissioning and matching of the control unit to
local conditions and building characteristics, as well as
instructing the user in the operation of the system,
must be carried out by your heating contractor.
As the user of new combustion equipment, you may be
obliged to notify your local flue gas inspector of the
installation [check local regulations]. Your local flue gas
inspector will also inform you [where appropriate]
about work he may be required to carry out on your
combustion equipment (e.g. regular checks, cleaning).
Terminology
To provide you with a better understanding of the func-
tions of your Vitotronic control unit, some terminology
is explained.
The terms are marked as follows:
Further information can be found in chapter
"Terminology" in the appendix.
Your system is preset
Your heating system is preset at the factory and is
therefore ready for operation:
Central heating
■Between 06:00 and 22:00 h, the rooms are heated
to 20 °C "Set room temperature" (standard room
temperature).
■Between 22:00 and 06:00 h, the rooms are heated
to 3 °C "Set reduced room temp" (reduced room
temperature, frost protection).
DHW heating
■Between 05:30 and 22:00 h, the DHW is heated to
50 °C "Set DHW temperature". Any installed DHW
circulation pump is switched on.
■Between 22:00 and 05:30 h, the DHW cylinder is not
reheated. Any installed DHW circulation pump is
switched off.
Note
Any DHW heating begun before 22:00 h is termina-
ted.
Frost protection
■Your boiler and DHW cylinder are protected against
frost.
Wintertime/summertime changeover
■This changeover is automatic.
Date and time
■The date and time have been set by your heating
contractor.
Your heating contractor can make further settings for
you during commissioning.
You can change the settings at any time to suit your
individual requirements.
Power failure
All settings are saved if there is a power failure.
If the heating system has been shut down for a pro-
longed period, reset the date and time.
Tips on saving energy
Central heating
■Standard room temperature ("Room temp set-
point", see page 19):
Do not overheat your home. Every degree of room
temperature reduction saves up to 6 % on your heat-
ing bills.
Never set your standard room temperature higher
than 20 °C.
■Time program (see page 19):
Heat your home to the standard room temperature
during the day and the reduced temperature at night.
Set this via the time program.
■Operating program:
If you do not require central heating, select one of
the following operating programs:
–"Only DHW" (see page 24):
If you require no heating for your home in summer,
but you require DHW.
–"Standby mode" (see page 17):
If you don't need to heat your home and don't
require DHW for long periods.
■Short absence (see page 21):
Reduce the room temperature if you are going out
shopping, for example. For this, select "Economy
mode".
Introductory information
Commissioning
5814953

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■Holidays (see page 22):
If you are going away, select the "Holiday pro-
gram":
The room temperature is reduced and DHW heating
is turned off.
■Ventilation:
Close the thermostatic valves when venting/airing.
Open the windows fully for a brief time.
■Roller shutters:
Close roller shutters (if installed) at dusk.
■Thermostatic valves:
Ensure that thermostatic valves are properly adjus-
ted.
■Radiators:
Never cover radiators or thermostatic valves.
DHW heating
■DHW circulation pump (see page 25):
Only activate the DHW circulation pump for periods
in which DHW is regularly drawn off. Set this via the
time program.
■DHW consumption:
Consider showering instead of running a bath. A
shower generally uses less energy than a full bath.
For additional energy saving functions of the Vitotronic
control unit, please contact your heating contractor.
Tips for greater comfort
Central heating
■Standard room temperature ("Room temp set-
point", see page 19):
You can select your individual preferred temperature
at any time in the standard menu.
■Preferred heating circuit (see page 27):
If your heating system consists of several heating cir-
cuits, you can make any important adjustments for
your preferred heating circuit directly via the stand-
ard menu.
■Time program (see page 19):
Make use of the time program. In the time program,
you can set time phases with different room temper-
atures, for example different temperatures for day
and night time.
■Heating curve (see page 20):
The heating curve enables you to individually adjust
the heating system to the actual heat demand in your
home. If set correctly, your preferred temperature will
be achieved all year round.
■"Party mode" (see page 21):
If you want to heat rooms to a different temperature
from the one set in the time program, select "Party
mode".
Example: Late in the evening, the reduced room
temperature is set by the time program. Your guests
stay longer.
DHW heating
■Time program (see page 24 and 25):
Use the time program for DHW heating.
Use the time program for the DHW circulation pump.
During the selected time phases, DHW is available
at the draw-off points at the required temperature.
Introductory information
Tips on saving energy (cont.)
5814953

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14°C 21°C
Fig. 1
Programming unit
You can change any setting on your heating system
centrally at the programming unit of the control unit.
If remote control units are installed in your rooms, you
can also adjust the settings at the remote control units.
Remote control operating instructions
Note
The programming unit can be placed in a wall mount-
ing base. The wall mounting base is available as an
accessory. Ask your heating contractor for further infor-
mation.
14°C 21°C
Fig. 2
Takes you to the previous step in the menu or
cancels a setting that has been started.
Cursor keys
Scrolls through the menu or adjusts values.
OK Confirms your selection or saves the setting
made.
Calls up "Help" (see following chapter) or addi-
tional information on the selected menu.
Calls up the extended menu.
2 control levels are available:
■The standard menu: See page 11
■The extended menu: See page 12
Note
The screensaver is activated if you have not made
any adjustments on the programming unit for a few
minutes (see page 12).
"Help" menu
Displays explanations about operation in the form of a
short guide.
Call up the short guide as follows:
■If the screensaver is active (see page 12):
Press .
■From anywhere in the menu:
Press repeatedly until the standard menu is
shown (see page 11).
Press .
Operation
Opening the control unit
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Symbols
These symbols are not always displayed, but appear
subject to the system version and the operating condi-
tion.
Displays:
Frost protection is active.
Central heating to standard room temperature
Central heating with reduced room temperature
Party mode is active.
Economy mode is active.
In conjunction with a solar thermal system:
Solar circuit pump is running
Burner in operation
Emissions test mode active
Heating circuits:
HC... Heating circuit ...
Operating programs:
, , :
For explanation of the symbols, see page 14
Messages:
Fault
Service
Standard menu
The following settings for preferred heating circuit D
can be called up and adjusted in the standard menu:
■Set room temperature
■Operating program
Call up the standard menu as follows:
■If the screensaver is active (see page 12):
Press OK.
■If you are in the extended menu (see page 12):
Press repeatedly until the standard menu
appears.
B
C
A
48 °CBoiler temperature
14 °C 21 °C
HC1
D
Fig. 3
AOperating program for preferred heating circuit D
BCurrent outside temperature
CSet room temperature for preferred heating cir-
cuit D
DPreferred heating circuit (see page 27)
Not displayed if only one heating circuit is instal-
led.
Note
■Settings for the preferred heating circuit can also be
adjusted in the extended menu (see page 12).
■The settings for any other connected heating circuits
can only be adjusted in the extended menu.
■Your heating contractor can block operation for the
standard menu. In such cases, you will not be able to
make adjustments in either the standard menu or the
extended menu.
Setting the standard room temperature for the pre-
ferred heating circuit
Press the following keys:
/ for the required value
OK
Operation
Programming unit (cont.)
5814953

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Setting the operating program for the preferred
heating circuit
Press the following keys:
/ for the required operating program
OK
Extended menu
In the extended menu, you can call up and adjust all
the settings from the Vitotronic control unit range of
functions, e.g. holiday program and time programs.
You can find the menu overview on page 38.
Call up the extended menu as follows:
■If the screensaver is active (see page 12):
Press OK and then .
■From anywhere in the menu:
Press .
Note
Your heating contractor can block operation for the
extended menu. In this case, you can only call up
service and fault messages.
Menu
Test mode
Continue with
Solar energy
DHW
Heating
OK
E
Fig. 4
EDialogue line
How to use the controls
If you have not made any settings for a few minutes,
the screensaver is activated. The display brightness is
reduced.
14°C 21°C
B
C
Fig. 5
BCurrent outside temperature
CSet room temperature
Operation
Standard menu (cont.)
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1. Press OK. This takes you to the standard menu
(see page 11).
2. Press . This takes you to the extended menu
(see page 12).
The selected menu point is highlighted in white.
Dialogue line E (see diagram on page 12) shows
the necessary instructions.
Adjustments to the central heating can be made for
every heating circuit. It is therefore necessary to select
the required heating circuit prior to making any adjust-
ments (e.g. room temperature).
The following diagram shows how to make adjust-
ments, using the set room temperature as an example.
The diagram shows the adjustment without and with
selection of the heating circuit, as well as different dia-
logue lines.
Vv
or
OK
Ú
OK
OK
Heating circuit 1
Economy mode
ÙÚ
Party mode
HC1
Continue with
Htg circ. selection ÙÚ
HC2
Was selected
Heating circuit 2
Set room temperature HC1
20 °C
Change with (
Set room temperature HC1
22 °C
Adopt with OK
Set room temperature HC1
22 °C
Adopted
48 °CBoiler temperature
HC1
14 °C 21 °C
OK
ê
ê
ÙÚ
HC1
Heating circuit 2
Economy mode
ÙÚ
Party mode
HC1
Continue with OK
ê
ê
ÙÚ
HC2
Set reduced room temp
Set reduced room temp
Set room temperature
Set room temperature
Menu
DHW
Continue with OK
Test mode
Solar energy
Heating
Vv
or
OK
Set room temperature HC2
20 °C
Change with (
Set room temperature HC2
22 °C
Adopt with OK
Set room temperature HC2
22 °C
Adopted
OK / /
v v
Heating circuit 1
Economy mode
Party mode
HC1
Continue with OK
ê
ê
Set reduced room temp
Set room temperature
/
v v
OK
OK
Fig. 6
Note
Heating circuit 3 can also be selected.
Operation
How to use the controls (cont.)
5814953

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Operating programs for central heating, DHW, frost protection
Symbol Operating program Function
Central heating and DHW heating
"Heating and DHW" ■The rooms of the selected heating circuit are
heated in accordance with the room temperature
and time program specified (see chapter "Central
heating").
■DHW is heated in accordance with the DHW
temperature and time program specified (see
chapter "DHW heating").
DHW heating
"Only DHW" ■DHW is heated in accordance with the DHW
temperature and time program specified (see
chapter "DHW heating").
■No central heating
■Frost protection is active.
Frost protection
"Standby mode" ■No central heating
■No DHW heating
■Frost protection for the boiler and the DHW cylin-
der is enabled.
Special operating programs
Display in the standard menu
40°CBoiler temperature
HC1
14°C 21°C
Screed drying
F
Fig. 7
Special operating programs F:
■"Screed drying"
This function is activated by your heating contractor.
Your screed is dried in line with a set time program
suitable for the relevant building materials (tempera-
ture/time profile). Your settings for central heating
are deactivated for the duration of the screed drying.
■"External hook-up"
Your Vitotronic control unit is regulated by a higher
ranking control unit.
■"External program"
The operating program has been changed by a com-
munication interface.
■"Holiday program" (see page 22)
Note
In the extended menu, you can call up the set operat-
ing program under "Information" (see page 38).
Time program
The following explains how to enter the settings for a
time program. The special features of individual time
programs are described in the relevant chapters.
You can set up a time program for the following func-
tions:
■Central heating (see page 19)
■DHW heating (see page 24)
■DHW circulation pump (see page 25)
The time program allows you to divide the day into
sections. These are called time phases. It is for you to
decide what happens in these time phases, e.g.
whether your rooms should be heated to the standard
room temperature.
■You can set the time program individually, to be the
same, or different, for every day of the week.
■You can select up to 4 time phases per day.
Operation
Operating program
5814953

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■For each time phase you set the start and end
points.
The selected time phase is illustrated by a white bar
on the time chart.
■In the extended menu, you can call up the time pro-
grams under "Information" (see page 38).
Setting a time program, using central heating as an example
Extended menu:
1.
2. "Heating"
3. / for the required heating circuit if necessary
4. "Heating time program"
5. Select part of the week or a day.
6. Select a time phase ! to $. The selected time
phase is illustrated by a white bar on the time chart.
7. Set the start and end points for the relevant time
phase. The length of the white bar on the time chart
is adjusted.
8. To exit the menu, press .
Cancelling the setting of a time phase early
Press repeatedly until the required display appears.
Example of time phases within the time program
for central heating
Heating
Select with (
HC1
Mo-Fr
?16:30 - 23:00 u
0 2 4 6 8 10 12 14 16 18 20 22 24
!05:00 - 08:30 u
Normal
Normal
!?
Fig. 8
■Time program for "Monday-Friday" ("Mo-Fr")
■Time phase !:
05:00 to 08:30 h
■Time phase ?:
16:30 to 23:00 h
In between these time phases the system heats to a
reduced temperature.
Setting the time program effectively
If you would like to set a different time program for just
one day of the week, proceed as follows.
Operation
Time program (cont.)
5814953

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Example: You want to set a different time program for Monday:
Heating time program
Monday
Saturday-Sunday
Monday-Friday
Monday-Sunday
ê
ê
ê
ç
HC1
Select with (
Fig. 9
1. Select "Monday-Sunday". Set the time program.
Note
The tick is always set at the sections of the week
with identical time phases.
Factory setting: Same for all days of the week,
therefore "Monday-Sunday" is ticked.
2. Select "Monday". Set the time program for this.
Note
The "Saturday-Sunday" part of the week will be
ticked because this is now the only part of the
week which has identical time phases.
Heating time program
Monday
Saturday-Sunday
Monday-Friday
Monday-Sunday
ê
ê
ê
ç
HC1
Select with (
Fig. 10
Deleting time phases
■Set the time for the end point to the same time that
was set for the start point.
or
■For the start point, select a time prior to 00:00 h.
The display shows the selected time phase as
"- - : - -".
Heating
Adopt with
HC1
§u
0 2 4 6 8 10 12 14 16 18 20 22 24
?- -:- - - - -:- - u
Normal
Normal
Mo-Fr
- -:- - - - -:- -
OK
Fig. 11
Operation
Time program (cont.)
5814953

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D
48°CKesseltemperatur
HK1
14°C 21°C
C
BA
Fig. 12
AFault indicator (red)
BON indicator (green)
CReset button
DON/OFF switch
Ask your heating contractor about the following:
■Level of the required system pressure
■Position of the following components:
–Pressure gauge
–Shut-off valve
–Gas shut-off valve
–Vents
1. Check the heating system pressure at the pressure
gauge. The heating system pressure is too low if
the indicator points to the area below the red field.
Top up with water or notify your local heating con-
tractor.
2. For open flue operation:
Check that the vents in the installation room are
open and unrestricted.
Note
With open flue operation, the combustion air is
drawn from the installation room.
3. Open the gas shut-off valve.
4. Switch ON the power supply, e.g. at a separate
MCB/fuse or a mains isolator.
5. Turn on the ON/OFF switch.
After a short time, the standard menu is displayed
(see page 11). The green ON indicator illuminates.
Your heating system and, if installed, your remote
controls are ready for use.
Shutting down the heating system
With frost protection monitoring
For every heating circuit, select the "Standby mode"
operating program.
■No central heating
■No DHW heating
■Frost protection for the boiler and the DHW cylinder
is enabled.
Start-up/shutdown
Switching on the heating system
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For the preferred heating circuit For all heating circuits
Standard menu
1. / for the operating program
"Standby mode" (frost protection monitoring).
2. OK
Extended menu
1.
2. "Heating"
3. / for the required heating circuit if necessary
4. "Heating program"
5. "Standby mode"
Note
The circulation pumps are briefly started every 24 hours
to prevent them from seizing up.
Without frost protection monitoring (shutdown)
1. Turn off the system ON/OFF switch.
2. Close the gas shut-off valve.
3. Isolate the heating system from its main power
supply, e.g. at the separate MCB/fuse or at a
mains isolator.
!Please note
If outside temperatures of below 3 °C are
expected, take appropriate measures to pro-
tect the heating system from frost.
If necessary, contact your heating contractor.
Information on prolonged shutdown
■Circulation pumps may seize up as they are not
being supplied with power.
■After an extended shutdown, it may be necessary to
reset the date and time (see page 27).
Start-up/shutdown
Shutting down the heating system (cont.)
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Further information can be found in chapter
"Terminology" in the appendix.
Setting the standard room temperature
Factory setting: 20 °C
For the preferred heating circuit For all heating circuits
Standard menu
1. / for the required value
2. OK
Extended menu
1.
2. "Heating"
3. / for the required heating circuit if necessary
4. "Set room temperature"
5. Set the required value.
Setting the reduced room temperature
Factory setting: 3 °C
Extended menu
1.
2. "Heating"
3. / for the required heating circuit if necessary
4. "Set reduced room temp"
5. Set the required value.
Central heating with this temperature:
■Between the time phases for standard heating mode
(see page 19)
■In the holiday program (see page 22)
Heating program
Further information can be found in chapter
"Terminology" in the appendix.
Setting the operating program
For the preferred heating circuit For all heating circuits
Standard menu
1. / for the operating program:
"Heating and DHW"
2. OK
Extended menu
1.
2. "Heating"
3. / for the required heating circuit if necessary
4. "Heating program"
5. E.g. "Heating and DHW"
For information on the operating programs, see
page 14.
Time program
Further information can be found in chapter
"Terminology" in the appendix.
Central heating
Room temperature
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Setting the time program for central heating
Factory setting: One time phase from 06:00 to 22:00 h
for every day of the week
Extended menu:
1.
2. "Heating"
3. / for the required heating circuit if necessary
4. "Heating time program"
5. Set the required time phases.
To see how to set a time program, see page 14.
Note
When adjusting the setting, bear in mind that your
heating system requires some time to heat the rooms
to the required temperature.
Heating curve
Further information can be found in chapter
"Terminology" in the appendix.
Setting the heating curve
Factory setting:
■"Slope": 1.4
■Heating curve "level": 0
Extended menu:
1.
2. "Heating"
3. / for the required heating circuit if necessary
4. "Heating curve"
5. "Slope" or "Level"
6. Set the required value.
Note
If you press ?, you will be given tips on how to set
the heating curve.
Example: Changing the heating curve slope to 1.5
A graph clearly shows the change in the heating curve
as soon as you alter the value for the slope or level.
Heating curve
Change with (
HC1
Slope 1.5
100°C
20 10 0 -10 -20 -30
41°C 55°C 68°C 81°C
23°C
Fig. 13
Depending on various outside temperatures (shown on
the horizontal axis), the assigned set flow tempera-
tures for the heating circuit are shown highlighted in
white.
Stopping central heating
For the preferred heating circuit For all heating circuits
Standard menu
1. / for the operating program:
■"Only DHW" (no central heating)
or
■"Standby mode" (frost protection active)
2. OK
Extended menu
1.
2. "Heating"
3. / for the required heating circuit if necessary
4. "Heating program"
5. "Only DHW" (no central heating)
or
"Standby mode" (frost protection active)
Central heating
Time program (cont.)
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