Viessmann Vitodens 100 User manual

VIESMANN
Operating instructions
for system users
Heating system
with control unit for constant temperature operation
VITODENS 100
5592 487 GB 2/2005 Please keep safe

Please follow these safety instructions closely to prevent accidents and
material losses.
Safety instructions explained
Danger
This symbol warns against the
risk of injury.
!Important information
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
designed for heating system users.
Danger
Incorrect work on the heating
system can lead to life-threa-
tening accidents.
&
&Electrical work carried out
must be by a person qualified
to work to Part P of the build-
ing regulations.
&Work on gas appliances must
only be carried out by a
CORGI registered gas engi-
neer.
&
If you notice the smell of gas con-
tact your heating installer or
TRANSCO immediately.
Danger
Escaping gas can cause explo-
sionswhichmayleadtoser-
ious injury.
&Do not smoke. Prevent
naked flames and sparks.
Never operate light switches
or those of electrical equip-
ment.
&Open windows and doors.
&Shut off the gas supply at the
meter control.
&Remove all personnel from
the danger zone.
&Observe the safety regula-
tions of your local gas sup-
plier, found on the gas meter.
If you smell flue gas inside the
property
Danger
Flue gases may lead to life-
threatening poisoning.
&Shut down the boiler.
&Ventilate the boiler room.
&Closealldoorsleadingtothe
living space.
For your safety
2
Safety instructions
5592 487 GB

If you notice fire from the appliance
call the fire brigade. Do not attempt
to extinguish the fire unless com-
petent to do so.
Danger
Fire causes a risk of burns and
explosion.
&Shut down the boiler.
&Close the fuel line shut-off
valves.
&Use a tested fire extin-
guisher, class ABC.
Installation area conditions
!Important information
Incorrect ambient conditions
canleadtodamagetothe
heating system and put safe
operation at risk.
&Ensure ambient tempera-
tures are higher than 0 ºC
and lower than 35 ºC.
&Prevent the air becoming
contaminated by haloge-
nated hydrocarbons (e.g. as
contained in paints, solvents
or cleaning fluids) and exces-
sive dust (e.g. through grind-
ing/polishing work).
&Avoid continuously high
humidity levels (e.g. through
frequent drying of washing).
&Never close existing ventila-
tion apertures.
Ancillary components, spare and
wearing parts
!Important information
Components which are not
tested with the heating system
may damage the heating sys-
tem, or affect its functions.
Installation or replacement
must only be carried out by
qualified personnel.
For your safety (cont.)
3
Safety instructions
5592 487 GB

Introduction
Initial start-up ............................................................................................. 5
Your heating system is pre-set at the factory ............................................... 5
General Description.................................................................................... 5
Where to find the controls
Summary of controls and indicators ............................................................ 6
&Opening the control unit ........................................................................... 6
&Control and display elements ................................................................... 6
&Display indication .................................................................................... 7
Changing room temperature ....................................................................... 7
Start-up and shutdown
Heating system start-up .............................................................................. 8
Settings
Operating modes ........................................................................................ 9
&Heating mode .......................................................................................... 9
&DHW heating - combi ............................................................................... 9
Heating ...................................................................................................... 9
DHW (combi boiler only) ............................................................................. 10
DHW (system boiler only)............................................................................ 10
Displays
Heating water temperature and system pressure......................................... 11
Switch OFF
Switching OFF Vitodens with frost protection............................................... 12
Heating system shutdown ........................................................................... 12
What to do
System characteristics................................................................................ 13
Fault messages in the display ..................................................................... 15
Repairs
Cleaning..................................................................................................... 16
Inspection and maintenance ...................................................................... 16
Energy saving tips .................................................................................... 17
Keyword index .......................................................................................... 18
Index
4
Index
5592 487 GB

The initial start-up and matching of
the control unit to local conditions and
the structural characteristics of the
building must be carried out by your
heating contractor.
Your heating system is pre-set at the factory
Your combi boiler is ready to provide
both central heating and hot water
after installation. Your system boiler
will provide both heating and hot
water providing a cylinder is installed.
Your heating system is ready for use.
You may change the factory settings
in accordance with personal require-
ments.
Note
All data is saved in case of power fail-
ure.
The Vitodens 100 is certified to com-
ply with the requirements of the rele-
vant European Directives (90/396/
EEC, 73/23 EEC and 92/42/EEC) for
use in Great Britain and Ireland with
gas category I2H (G20 with a gov-
erned gas supply at 20 mbar (8 in.wg)
inlet pressure).
The appliance classification is either
C13x or C33x depending upon whether
a horizontal or vertical flue terminal is
used.
General Description
The Vitodens 100 is a fully automatic,
wall mounted, fan assisted balanced
flue gas combination or system boiler
for use with natural gas (G20) at 20
mbar (8 in.wg) supply on sealed sys-
tems only.
The unit provides central heating at
outputs between 8.0 kW to 24.0 kW/
30.0 kW. If required, the central heat-
ing heat output can be range rated to
suit the system requirements.
Heat output is automatically con-
trolledaccordingtodemand(inboth
domestic hot water and central heat-
ing mode). Note that hot water is
always given priority.
Initial start-up
5
Introduction
5592 487 GB

Opening the control unit
Controls and indicators are located behind the hinged front cover.
Control and display elements
The control unit is preset at the factory for standard operation.
Your heating system is ready for use.
ATime switch (accessory)
Btw Rotary selector"DHW tem-
perature" (Combi boiler only)
Ctr Rotary selector "heating
water temperature"
DDisplay, fault and reset button.
EDisplay
Summary of controls and indicators
6
Wheretofindthecontrols
5592 487 GB

Display indication
ADisplay value or fault code
BHeating mode
CDHW heating
DBurner in operation
ECurrent burner output
FBoiler primary water temperature
in °C (combined with display
value)
GFault
HSystem pressure (combined with
display value)
KEmissions test switch (only for
qualified personnel)
Changing room temperature
In addition to the boiler control unit, a separate room temperature controller
must be installed in one of the living rooms to comply with part L of the building
regs if the heating system is to be regulated in accordance with the required
room temperature.
Make adjustments using the appropri-
ate operating instructions.
Please also note:
It ist not recommended that thermo-
static radiator valves are intalled in
the same room as the controller.
If thermostatic radiator valves are
installed in the room where the con-
troller ist fitted they mus be fully open.
Summary of controls and indicators (cont.)
7
Wheretofindthecontrols
5592 487 GB

The initial start-up and matching of the control unit to local conditions and struc-
tural characteristics of the building, must be carried out by your heating contrac-
tor.
Before you switch ON a heating system which has been switched OFF for
longer periods, it would be advisable to contact your local heating contractor.
1. Switch ON the mains power.
Your heating system and, if
installed, your room temperature
controller Vitotrol 100 or similar
programmable room thermostat are
now ready to operate.
2. Control the pressure of the heating
system by setting the rotary selec-
tors to"tw "and"tr"to"9". The
system pressure is displayed.
Minimumsystempressure1.0
bar.
Please contact your heating con-
tractor if the system pressure is too
low. Information regarding topping
up the system can be found in the
installation and service instruc-
tions.
Heating system start-up
8
Start-up and shutdown
5592 487 GB

Vitodens can be operated in the following modes: "heating" or "hot water".
Heating mode
If the room temperature controller
Vitotrol 100, or similar programmable
room thermostat, is connected, then
the room temperature is controlled
from there.
Observe the separate operating
instructions.
Should the room temperature control-
ler not produce sufficient heat (e.g.
when it's very cold), the heating tem-
perature can be changed at the rotary
selector "tr".
DHW heating - combi
In the event of a demand for hot
water, the appliance will detect water
flow and initiate the ignition
sequence. The fan (and pump) will
start and the boiler will light.
If the hot water demand is near to the
maximum design flow rate the boiler
will run continuously at full output until
the tap is closed or the flow rate is
reduced, the heat input will be
reducedtomaintainasteadypreset
temperature at the tap.
Hot water is available almost instanta-
neously from the boiler, but the final
outlet temperature and the delay in
reaching full temperature will depend
ontheflowrateandthedistancefrom
the boiler to the tap.
When the tap is closed, the boiler will
return to heating mode if there is a
demand for heating, otherwise the
boiler will shut down until the next
demand for heating or hot water.
Heating
Switching ON:
Set rotary selector "tr"tothe
desired heating temperature.
The display "r" indicates when room
temperature has been reached.
Switching OFF:
Turn heating rotary selector"r"to
"r".
Operating modes
9
Settings
5592 487 GB

Operation with integral instantaneous water heater:
Select the DHW temperature in accordance with your personal preferences (e.
g. for showers).
Switching ON:
Set rotary selector "tw"tothe
desired DHW temperature.
The display "w" indicates when DHW
temperature has been reached.
Switching OFF:
Turn DHW rotary selector"r"to
"r".
DHW (system boiler only)
When in operation with separate a DHW cylinder, DHW temperature is regu-
lated at the temperature control on the DHW cylinder.
DHW (combi boiler only)
10
Settings
5592 487 GB

Checking the heating temperature
During operation, heating water tem-
perature is constantly displayed.
Checking the system pressure
1. Turn both the rotary selectors"tr"
and "tw" fully "9" anti-clockwise.
The display now shows the actual
system pressure, for instance 1.0
bar.
2. Return both rotary selectors to their
original positions.
Note
The display will flash if the system
pressure falls below 0.6 bar. In this
instance, please notify your heating
contractor. Information regarding top-
ping up the system pressure can be
foundintheinstallationandservice
instructions.
Heating water temperature and system pressure
11
Displays
5592 487 GB

Switch OFF the equipment if you don't want to use the boiler for a few days.
Turn both rotary selectors to "9".
Boiler frost protection is active.
Heating system shutdown
Shut down your heating system completely, if it will not be needed for longer
periods of time (several months).
Before you switch your heating system OFF for longer periods, it would be advi-
sable to contact your local heating contractor. Your heating engineer will take
any necessary measures, e.g. for frost protection of the system or to preserve
the heating surfaces.
1. Close the main gas shut-off valve
and safeguard against
unauthorised reopening.
2. Switch OFF the mains power.
Now the system is idle.
Please note that the system is no
longer frost protected.
Switching OFF Vitodens with frost protection
12
Switch OFF
5592 487 GB

What to do if ... Cause Solution
... the heating system
doesn't come on
System switch switched
off
Switch on
System controls includ-
ing room thermostats
not calling for heatKnob
"tr"issetto"9"
System controls to create
demand. 9
Knob "tr"issetto"9" Set required heating
water temperature (see
page 9)
Fuse has triggered
(either at the fuse board
or in the controls)
Contact your heating en-
gineer
... the boiler does not
switch on (or switched on
infrequently)
No gas Contact your gas utility
supplier or heating engi-
neer
Control fault Read off the fault codes
in the display. Contact
your heating engineer
and report fault codes.
System characteristics
13
What to do
5592 487 GB

What to do if ... Cause Solution
... the burner doesn't
ignite, the fault symbol
"U" is displayed and
"Reset" flashes red
False start Press "Reset" button. If
this attempt to start is
also unsuccessful con-
tact your heating engi-
neer.
Low system water pres-
sure
The system pressure will
flash in the display. Con-
tact your heating engi-
neer.
It is possible to recharge
system via the filling loop.
Note: Care must be taken
to ensure the fill valve is
not left turned on. Viess-
mann Ltd will not be liable
for incorrect use of the
filling loop, if in doubt
contact your heating en-
gineer. Information re
topping up can be found
in the installation an ser-
vice instructions.
... the heating system
doesn't come on
System controls includ-
ing room thermostats
not calling for heat
Switch on system con-
trols to create demand.
... the burner doesn't
ignite, display shows
fault symbol "U"
Control fault Read off the fault codes
in the display. Contact
the heating engineer and
report fault codes.
…the burner switches off
although the desired
room temperature hasn't
been reached
Fault in air supply or in
the flue
Contact your heating en-
gineer.
Heating water tempera-
ture or room tempera-
ture is set too low
Increase heating water
temperature by turning
knob "tr"(seepage9)
or increase desired room
temperature (see Vitotrol
100 manual).
System characteristics (cont.)
14
What to do
5592 487 GB

What to do if ... Cause Solution
... the rooms are cold,
even though the burner is
working
Hot water priority Stop using hot water
Fault on Vitotrol 100 or
similar programmable
room thermostat
Contact your heating en-
gineer.
…the temperature of the
hot water is too low
The hot water tempera-
ture is set too low or
knob "tw"isseton"9"
Set desired hot water
temperature
Fault messages in the display
Any faults in your heating system are
indicated on the display by a flashing
fault symbol "U".
Read off the fault code in the display
and report it to your heating engineer.
System characteristics (cont.)
15
What to do
5592 487 GB

The appliance casing can be cleaned
usingadampclothandamilddeter-
gent. Do not use abrasive cleaners.
Inspection and maintenance
To ensure continued efficient opera-
tion of the appliance, it is recom-
mended that it is checked and
serviced at regular intervals. The fre-
quency of servicing will depend upon
the particular installation conditions
and usage but in general once a year
should be adequate. It is the law that
any service work must be carried out
by a competent CORGI registered
engineer.
Cleaning
16
Repairs
5592 487 GB

Along with using a modern heating system, you can save additional energy by
your own actions.
For this, the following measures will help you:
&Correct ventilation.
If windows are left open Aclose
thermostatic radiator valves Bto
prevent incorrect heat demand.
&Do not overheat.
Endeavour to reach a room tem-
perature of 20 ºC; every degree of
room temperature reduction saves
up to 6 % of your heating bills.
&Close roller shutters (where
installed) at dusk.
&Adjust thermostatic radiator
valves Bcorrectly.
&Do not cover radiators Cor ther-
mostatic radiator valves B.
&Utilise the setting options offered by
control unit D.
&Controlled DHW consumption: A
shower generally uses less energy
than a full bath.
Energy saving tips
17
Energy saving tips
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C
Cleaning ...................................... 16
Commissioning ............................. 5
Controls ....................................... 6
D
DHW temperature ........................ 10
Display ......................................... 7
F
Factory settings ............................ 5
Faults .......................................... 13
Fire .............................................. 3
Frost protection ............................ 12
G
General Description ...................... 5
H
Heating and DHW ......................... 5
Heating water temperature ............. 9
I
Indicators ..................................... 6
M
Maintenance ................................ 16
O
Opening the control unit ................. 6
P
Pressure display .......................... 11
R
Room temperature ........................ 7
S
Safety information ......................... 2
Smell of flue gas ........................... 2
Standard room temperature (day
temperature) ................................. 5
Switching ON ................................ 8
System pressure .......................... 11
Keyword index
18
Keyword index
5592 487 GB

19
5592 487 GB

Your contact
Contact your local heating contractor if you have any questions regarding the
maintenance and repair of your heating system. You may, for example, find
local heating contractors on the internet under www.viessmann.com.
20
Printed on environmentally-friendly, chlorine-free bleached paper
5592 487 GB Subject to technical modifications
Viessmann Limited
Hortonwood 30, Telford, TF1 7YP, GB