Viessmann VITODENS Manuale utente
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
5592 646 GB
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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.)
5592 646 GB
4
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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5
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.)
5592 646 GB
6
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
5592 646 GB
7
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
5592 646 GB
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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
5592 646 GB
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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
5592 646 GB
10
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
5592 646 GB
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