Viessmann VITODENS User manual

Operating instructions
for the system user
VIESMANN
Heating system with Vitotronic 100 control unit, type HC2A
for constant temperature operation
VITODENS
5592 646 GB 1/2010 Please keep safe.

2
Please follow these safety instructions closely to prevent accidents and mate-
rial losses.
Safety instructions explained
Danger
This symbol warns against the
risk of injury.
!Please note
This symbol warns against the
risk of material losses and envi-
ronmental pollution.
Note
Details identified by the word "Note" con-
tain additional information.
Target group
These operating instructions are for the
heating system user.
This unit is not designed to be used by
persons (including children) with limited
bodily, sensory or mental capacities, or
lacking experience and/or lacking knowl-
edge, unless they are supervised by a
person responsible for their safety, or
have received instructions from such a
person as to how to use the unit.
!Please note
Children should be supervised.
Ensure that children do not play
with the unit.
Danger
Incorrectly executed work on the
heating system can lead to life-
threatening accidents.
■ Work on gas appliances must
only be carried out by a regis-
tered gas fitter.
■ Work on electrical equipment
must only be carried out by a
qualified electrician.
If you smell gas
Danger
Escaping gas can lead to explo-
sions which may result in serious
injury.
■ Do not smoke. Prevent naked
flames and sparks. Never
switch lights or electrical appli-
ances ON or OFF.
■ Close the gas shut-off valve.
■ Open windows and doors.
■ Remove all people from the
danger zone.
■ Notify your gas or electricity
supplier and your heating con-
tractor from outside the build-
ing.
■ Shut off the electricity supply to
the building from a safe place
(outside the building).
Safety instructions
For your safety
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If you smell flue gas
Danger
Flue gas can lead to life-threat-
ening poisoning.
■ Shut down the heating system.
■ Ventilate the boiler room.
■ Close all doors in the living
space.
In case of fire
Danger
Fire creates the risk of burning
and explosions.
■ Shut down the heating system.
■ Close the shut-off valves of the
fuel lines.
■ Use a tested fire extinguisher,
class ABC.
Boiler room requirements
!Please note
Incorrect ambient conditions can
lead to damage to the heating
system and put the safe opera-
tion at risk.
■ Ensure ambient temperatures
above 0 ºC and below 35 ºC.
■ 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 humid-
ity levels (e.g. through frequent
drying of washing).
■ Never close existing ventilation
apertures.
Ancillary components, spare and
wearing parts
!Please note
Components that are not tested
with the heating system may lead
to damage to the heating system,
or may affect their various func-
tions.
Installation or replacement work
must only be carried out by quali-
fied personnel.
Safety instructions
For your safety (cont.)
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Introductory information
Commissioning..................................................................................................... 6
Your system is preset at the factory..................................................................... 6
Terminology.......................................................................................................... 6
Tips on saving energy.......................................................................................... 7
Operation
Controls................................................................................................................ 8
How to operate..................................................................................................... 9
Symbols................................................................................................................ 9
Start-up/shutdown
Starting the heating system.................................................................................. 10
Shutting down the heating system....................................................................... 11
■ With frost protection monitoring........................................................................ 11
■ Without frost protection monitoring (shutdown)................................................ 11
Central heating
Required settings for central heating.................................................................... 12
Setting the heating flow temperature.................................................................... 12
Setting the heating program (central heating)...................................................... 12
Setting the time program for central heating........................................................ 13
Stopping the central heating................................................................................. 14
Central heating comfort function.......................................................................... 15
DHW heating
Required settings (DHW heating)......................................................................... 16
Setting the DHW temperature.............................................................................. 16
Setting the heating program (DHW heating)........................................................ 16
Setting the time program for DHW heating.......................................................... 17
Switching off DHW heating................................................................................... 18
DHW heating comfort function (if available)......................................................... 19
Further adjustments
Setting the time and date..................................................................................... 20
Setting the temperature unit (°C/°F)..................................................................... 20
Restoring factory settings..................................................................................... 21
Scanning
Scanning information............................................................................................ 22
Scanning the service messages........................................................................... 23
Scanning fault messages..................................................................................... 24
Index
Index
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Multi-boiler systems
Special considerations for multi-boiler systems................................................... 26
Emissions test mode......................................................................................... 27
What to do if...
Rooms are too cold.............................................................................................. 28
Rooms are too hot................................................................................................ 29
There is no hot water............................................................................................ 29
The DHW is too hot.............................................................................................. 30
"ã" flashes on the display .................................................................................. 30
"E" flashes on the display .................................................................................. 30
"ë" flashes on the display .................................................................................. 31
Maintenance
Servicing............................................................................................................... 32
■ Cleaning............................................................................................................ 32
■ Inspection and maintenance............................................................................. 32
Keyword index.................................................................................................... 35
Index
Index (cont.)
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The commissioning and matching of the
control unit to local conditions and build-
ing characteristics, as well as instructing
the user in the operation of the system,
must be carried out by your heating con-
tractor.
As the operator of new combustion
equipment, you may be obliged to notify
your local flue gas inspector [check local
regulations]. Your local flue gas inspec-
tor will also inform you [where appropri-
ate] about work he may be required to
carry out on your combustion equipment
(e.g. regular checks, cleaning).
Your system is preset at the factory
The control unit is preset to " " at the
factory for central heating and DHW
heating.
Your heating system is therefore ready
for use:
Central heating
■ The rooms are heated in accordance
with the settings on your control unit
and room temperature control unit.
■ Your heating contractor can make fur-
ther settings for you during commis-
sioning.
You can change any settings individu-
ally at any time to suit your require-
ments (see chapter "Central heating").
DHW heating
■ The DHW is heated up to 50 °C.
■ Your heating contractor can make fur-
ther settings for you during commis-
sioning.
You can change any settings individu-
ally at any time to suit your require-
ments (see chapter "DHW heating").
Frost protection
■ Your boiler and DHW cylinder are pro-
tected against frost.
Power failure
■ All data is saved if there is a power
failure.
Terminology
To provide you with a better understand-
ing of the functions of your control unit,
the appendix contains the chapter "Ter-
minology" (see page 33).
Introductory information
Commissioning
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B
C
D
A
Use the adjustment options on control
unit A and the room temperature con-
trol unit:
■ Never overheat your rooms. Every
degree by which the room temperature
is reduced saves up to 6% on heating
costs.
Never set your room temperature
higher than 20 °C (see page 12).
■ Never set the DHW temperature too
high (see page 16).
■ Select the heating program that meets
your current requirements:
– In the summer, if you do not want to
heat any rooms but require hot
water, select the " " heating pro-
gram (see page 16).
– If you do not want to heat any rooms
and require no hot water for a pro-
longed period of time, select the
" " heating program (see
page 11).
Further recommendations:
■ Correct ventilation/airing.
Briefly open windows B fully and at
the same time close the thermostatic
valves C.
■ Close roller shutters (if installed) at
dusk.
■Set thermostatic valves C correctly.
■Never cover radiators D or thermo-
static valves C.
■ Controlled DHW consumption: A
shower generally uses less energy
than a full bath.
Introductory information
Tips on saving energy
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You can change the settings for your
heating system centrally at the program-
ming unit.
If you have a room temperature control
unit installed in your rooms, you can also
change the settings on the room temper-
ature control unit.
Room temperature control unit
operating instructions
Note
The programming unit can be placed in
a wall mounting base. This is available
as an accessory. Ask your heating con-
tractor about it.
4 8°C
s A
Takes you one step back in the
menu
Cursor keys
To scroll in the menu or set values
OK Enables you to confirm your selec-
tions or setting
No function
Enables you to call up the menu for
settings and scanning
Operation
Controls
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Standard display
æè
4 8°C
spA
è
Press . This takes you to the menu for
settings and scanning.
Symbols
These symbols are not always dis-
played, but appear subject to the system
version and the operating state. Flashing
displays indicate that modifications can
be made.
Menu
Central heating
DHW heating
Information
Emissions test mode
Additional settings
Setting the time or time program
Setting the date
Heating program
Frost protection (standby mode)
DHW heating
Central heating and DHW heat-
ing
Comfort mode for central heat-
ing
COMF Comfort mode for DHW heating
ECO Without comfort mode for DHW
heating
Messages
Service message
The service interval has expired
Fault message
Fault message for burner
Displays
Temperature
Monitoring frost protection
Central heating
Heating circuit pump running
Cylinder primary pump running
Burner running
Factory setting
Operation
How to operate
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0
123
4
bar
C D
E
BA
4 8°C
s A
AFault indicator (red)
BON indicator (green)
CReset button
DON/OFF switch
EPressure gauge
1. Check the heating system pressure
at the pressure gauge. The system
pressure is too low if the indicator
points to the area below 1.0 bar. In
this case, top up with water or notify
your local heating contractor.
2. For open flue operation:
Check that the ventilation apertures
of the installation room are open and
unrestricted.
Note
With open flue operation, the com-
bustion air is drawn from the installa-
tion room.
3. Open the gas shut-off valve.
Note
Ask your heating contractor to
explain the positioning and handling
of these components.
4. Switch ON the power supply, e.g. at
a separate MCB/fuse or a main iso-
lator.
5. Switch system ON/OFF switch " "
ON.
After a short while, the standard dis-
play appears and the green ON indi-
cator illuminates. Your heating sys-
tem and room temperature control
unit (if connected) are now ready for
operation.
Start-up/shutdown
Starting the heating system
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With frost protection monitoring
Select heating program " " for frost pro-
tection (standby mode).
Press the following keys:
1. for settings; " " flashes.
2. OK to confirm; " " flashes.
3. OK to confirm; " " flashes.
4. until " " flashes.
5. OK to confirm; frost protection is
activated.
■ No central heating.
■ No DHW heating.
■ Frost protection for the boiler and the
DHW cylinder is enabled.
Note
The circulation pumps are briefly started
every 24 hours to prevent them from
seizing up.
Terminating heat program " "
Select another heating program.
Press the following keys:
1. for settings; " " flashes.
2. OK to confirm; " " flashes.
3. OK to confirm; " " flashes.
4. until " " flashes: the rooms
and DHW are heated.
or
until " " flashes: DHW is
heated but central heating is not
active.
5. OK to confirm; the selected heating
program is activated.
Without frost protection monitoring (shutdown)
1. Switch the ON/OFF switch " " OFF.
2. Close the gas shut-off valve.
Note
Ask your heating contractor to
explain the positioning and handling
of these components.
3. Isolate the heating system from its
main power supply, e.g. at a separate
MCB/fuse or a mains isolator.
4. Where outside temperatures of
below 3 °C are anticipated, please
take suitable measures to protect the
heating system against frost. If nec-
essary, contact your heating contrac-
tor.
Note
After an extended shutdown, it may be
necessary to reset the date and time
(see page 20).
Start-up/shutdown
Shutting down the heating system
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If you want central heating, check the
following points:
■ Have you set the required room tem-
perature?
Room temperature control unit
operating instructions
■ Have you set the heating flow temper-
ature at a sufficiently high level?
For settings, see the next chapter.
■ Have you set the correct heating pro-
gram?
For setting see page 12
and
Room temperature control unit
operating instructions
■ Have you set the required time pro-
gram?
For setting see page 13
and
Room temperature control unit
operating instructions
Setting the heating flow temperature
Set the heating flow temperature suffi-
ciently high so the required room tem-
perature can be achieved.
Factory setting: 74 °C
Press the following keys:
1. for settings; " " flashes.
2. OK to confirm; " " flashes.
3. for heating flow temperature;
" " flashes.
4. OK to confirm; the selected temper-
ature value flashes.
5. / for the required heating flow
temperature.
6. OK to confirm; the new temperature
value is saved.
Setting the heating program (central heating)
Factory setting: " " for central heat-
ing and DHW heating (winter mode).
Central heating
Required settings for central heating
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Press the following keys:
1. for settings; " " flashes.
2. OK to confirm; " " flashes.
3. OK to confirm.
4. / until " " flashes.
5. OK to confirm; the rooms and DHW
are heated.
Setting the time program for central heating
■ The time program for central heating is
made up of time phases. One time
phase from 6:00 to 22:00 h for each
day is set at the factory.
■ You can select up to 4 time phases per
day for standard heating mode. Set the
start and end points for each time
phase. Between these time phases,
the rooms are heated to the frost pro-
tection temperature.
■ You can set the time program individ-
ually.
When setting, bear in mind that your
heating system requires some time to
heat the rooms to the required tem-
perature.
Press the following keys:
1. for settings; " " flashes.
2. OK to confirm; " " flashes.
3. / until " " flashes.
4. OK to confirm;
"1234567"
flashes.
5. OK if you want to set the same time
program for every day of the
week
or
/ to select an individual day
("1" for Monday, "2" for
Tuesday etc.) and OK to con-
firm.
Time phase "1" flashes.
6. / for the required time phase.
7. OK to confirm; Ô appears and the
previous start time or "- - : - -"
flashes.
8. / for the required start time.
9. OK to confirm; Õ appears and the
previous end time or "- - : - -"
flashes.
10. / for the required end time.
11. OK to confirm.
Central heating
Setting the heating program (central heating) (cont.)
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Note
If you have set a time program for central
heating at the room temperature control-
ler, a time program for at least the same
period must also be set in the control
unit.
Example shown:
The start time of time phase 1 for Mon-
day: 6:00 h.
106:00
Ô1
Menu for central heating
Menu for time program
1Weekday Monday
ÔStart time
1Time phase "1"
06:00 Time
Example:
You want to set the same time program
for every day except Monday:
Select the period
"1234567" and set the time
program.
Then select "1" and set the time pro-
gram for this.
Note
If you want to terminate the setting proc-
ess prematurely, keep pressing until
the required display appears.
Deleting a time phase
Set the time for the end point to the same
time that was set for the start point. The
display shows the selected time phase
"- - : - -".
Stopping the central heating
You do not want to heat any rooms
but you want to heat the DHW.
Press the following keys:
1. for settings; " " flashes.
2. OK to confirm; " " flashes.
3. OK to confirm; " " flashes.
4. until " " flashes.
5. OK to confirm; the central heating is
deactivated and DHW is heated
(summer mode).
You do not want to heat any rooms or
DHW.
Press the following keys:
1. for settings; " " flashes.
2. OK to confirm; " " flashes.
Central heating
Setting the time program for central heating (cont.)
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3. OK to confirm; " " flashes.
4. until " " flashes.
5. OK to confirm; the central heating
and DHW heating are deactiva-
ted, frost protection monitoring
is activated (standby mode).
Central heating comfort function
With this function, you can change the
room temperature for several hours, e.g.
if guests unexpectedly stay longer in the
evening. You do not have to change any
existing control settings. The DHW is
boosted in this function to the specified
set temperature.
Press the following keys:
1. for settings; " " flashes.
2. OK to confirm; " " flashes.
3. / until " " flashes.
4. OK to confirm; "on" flashes
5. OK to confirm; the rooms and DHW
are heated.
■ The rooms are heated to the required
temperature.
■ DHW is reheated to the selected DHW
temperature.
Ending central heating comfort func-
tion
■ Automatically after 8 hours
or
■ Automatically when the system
switches to standard heating mode in
accordance with the time program
or
■ Set the comfort function to "OFF":
Press the following keys:
1. for settings; " " flashes.
2. OK to confirm; " " flashes.
3. / until " " flashes.
4. OK to confirm.
5. / until "OFF" flashes.
6. OK to confirm; the comfort function
is switched off.
Central heating
Stopping the central heating (cont.)
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If you want DHW heating, check the fol-
lowing points:
■ Have you set the required DHW tem-
perature?
For settings, see the next chapter.
■ Have you set the correct heating pro-
gram?
For settings, see page 16.
■ Have you set the required time pro-
gram?
For settings, see page 17.
Setting the DHW temperature
Factory setting: 50 °C
Press the following keys:
1. for settings; " " flashes.
2. for " ".
3. OK to confirm; temperature value
flashes.
4. / for required DHW temperature.
5. OK to confirm; the new temperature
value is saved.
Setting the heating program (DHW heating)
Factory setting: " " for central heat-
ing and DHW heating (winter mode).
Press the following keys:
1. for settings; " " flashes.
2. OK to confirm; " " flashes.
3. OK to confirm; " " flashes.
4. / until " " flashes for DHW heat-
ing (summer mode, no central
heating)
or
until " " flashes for central
heating and DHW heating (win-
ter mode).
5. OK to confirm; the selected heating
program is activated.
DHW heating
Required settings (DHW heating)
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■ The time program for DHW heating is
made up of time phases. One time
phase from 5.30 to 22:00 h for each
day is set at the factory. To ensure that
hot water is available at the start of
standard heating mode, the time
phase for DHW heating begins half an
hour earlier than the time phase for
standard heating mode.
■ You can select up to 4 time phases per
day for DHW heating. Set the start and
end points for each time phase. The
DHW is not reheated between these
time phases.
■ You can set the time program individ-
ually.
When setting, bear in mind that your
heating system requires some time to
heat the DHW to the required temper-
ature.
Press the following keys:
1. for settings; " " flashes.
2. / until " " flashes.
3. OK to confirm; temperature value
flashes.
4. / until " " flashes.
5. OK to confirm;
"1234567"
flashes.
6. OK if you want to set the same time
program for every day of the
week
or
/ to select an individual day
("1" for Monday, "2" for
Tuesday etc.) and OK to con-
firm.
Time phase "1" flashes.
7. / for the required time phase.
8. OK to confirm; Ô appears and the
previous start time or "- - : - -"
flashes.
9. / for the required start time.
10. OK to confirm; Õ appears and the
previous end time or "- - : - -"
flashes.
11. / for the required end time.
12. OK to confirm.
Example shown:
The start time of time phase 1 for Mon-
day: 6:00 h.
106:00
Ô1
Menu for DHW heating
Menu for time program
1Weekday Monday
ÔStart time
1Time phase "1"
06:00 Time
DHW heating
Setting the time program for DHW heating
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Example:
You want to set the same time program
for every day except Monday:
Select the period
"1234567" and set the time
program.
Then select "1" and set the time pro-
gram for this.
Note
If you want to terminate the setting proc-
ess prematurely, keep pressing until
the required display appears.
Deleting a time phase
Set the time for the end point to the same
time that was set for the start point. The
display shows the selected time phase
"- - : - -".
DHW heating once, no longer in the
time program
Note
At least one heating circuit of your sys-
tem must not be in standby mode.
Standard menu
1. "Heating"
2. Select the heating circuit, if neces-
sary.
3. "Party mode"
4. Disable "Party mode" again with
"OFF", to prevent unintentional cen-
tral heating with standard room tem-
perature.
Switching off DHW heating
You do not want DHW, but do want to
heat the rooms.
Press the following keys:
1. for settings; " " flashes.
2. OK to confirm; " " flashes.
3. OK to confirm; " " flashes.
4. until " " flashes.
5. OK to confirm; the rooms and
DHW are heated (winter
mode).
6. for settings; " " flashes.
7. for " ".
8. OK to confirm; temperature value
flashes.
9. to 10 °C.
10. OK to confirm; the new tempera-
ture value is saved.
DHW heating
Setting the time program for DHW heating (cont.)
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You do not want to have DHW or heat
your rooms.
Press the following keys:
1. for settings; " " flashes.
2. OK to confirm; " " flashes.
3. OK to confirm; " " flashes.
4. until " " flashes.
5. OK to confirm; DHW heating and
central heating are stopped,
frost protection monitoring is
activated (standby mode).
DHW heating comfort function (if available)
With the comfort function you can pre-
heat the water volume in the instantane-
ous water heater to the selected DHW
temperature. This makes DHW available
immediately.
Press the following keys:
1. for settings; " " flashes.
2. for " ".
3. OK to confirm, "COMF ECO"
flashes.
4. OK to confirm; "ECO" flashes.
5. for "COMF".
6. OK to confirm; the comfort function
is activated.
Ending the DHW heating comfort
function
Press the following keys:
1. for settings; " " flashes.
2. for " ".
3. OK to confirm, "COMF ECO"
flashes.
4. OK to confirm; "COMF" flashes.
5. for "ECO".
6. OK to confirm; the comfort function
is terminated.
DHW heating
Switching off DHW heating (cont.)
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Set the time
Press the following keys:
1. for settings; " " flashes.
2. /for " ".
3. OK to confirm; flashes.
4. OK to confirm.
5. / for the required time.
6. OK to confirm; the new time is
saved.
Set date
Press the following keys:
1. for settings; " " flashes.
2. /for " ".
3. OK to confirm; flashes.
4. /for " ".
5. OK to confirm.
6. / for the required date.
7. OK to confirm; the new date is
saved.
After a prolonged shutdown
If your heating system has been shut
down for a long time, it may be neces-
sary to reset the time and date. After the
system is switched on, the time display
immediately starts flashing ( ).
Press the following keys:
1. / for the required time.
2. OK to confirm; the new time is
saved and appears.
3. / for the required date.
4. OK to confirm; the new date is
saved.
Setting the temperature unit (°C/°F)
Factory setting: °C
Press the following keys:
1. for settings; " " flashes.
2. for " ".
3. OK to confirm; " " flashes.
4. / for required temperature unit
("°C" or "°F").
5. OK to confirm; the new temperature
unit is saved.
Further adjustments
Setting the time and date
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