Viessmann Vitodens 100-W User manual

Operating instructions
for the system user
VIESMANN
Heating system
with control unit for constant temperature or weather-compensated
operation
VITODENS 100-W
5592 584 GB 6/2012 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.
■Emergency contact
If you smell gas or detect a gas
leak call the National Gas
Emergency service on
0800 111 999.
■ 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
Terminology.......................................................................................................... 6
Your system is preset at the factory..................................................................... 6
Energy saving tips................................................................................................ 7
Tips for more comfort........................................................................................... 7
About the controls
Summary of controls and indicators..................................................................... 8
■Opening the control unit.................................................................................... 8
■Controls and display elements.......................................................................... 8
■Indicators on display......................................................................................... 9
Operating mode of the heating system................................................................ 9
■Operation without room temperature control unit.............................................. 9
■ Operation with room temperature control unit................................................... 9
■ Weather-compensated operation...................................................................... 10
Start-up/shutdown
Starting the heating system.................................................................................. 11
Shutting down the heating system....................................................................... 11
■ With frost protection monitoring........................................................................ 11
■ Without frost protection (shutdown).................................................................. 12
Settings
Heating................................................................................................................. 13
Domestic hot water............................................................................................... 13
Switching the comfort function on and off ........................................................... 14
Displays
Heating water temperature................................................................................... 16
What to do if...
Rooms are too cold.............................................................................................. 17
Rooms are too hot................................................................................................ 18
There is no hot water............................................................................................ 18
The DHW is too hot.............................................................................................. 19
"U" flashes on the display..................................................................................... 19
"U" is shown on the display................................................................................... 19
Fault code "58" is shown on the display............................................................... 19
Fault indicator on display...................................................................................... 20
Resetting a burner fault ....................................................................................... 20
Index
Index
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Servicing
Cleaning............................................................................................................... 21
Inspection and maintenance................................................................................ 21
■.......................................................................................................................... 21
Appendix
Terminology.......................................................................................................... 22
Keyword index.................................................................................................... 24
Index
Index (cont.)
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The commissioning and adjusting of the
control unit to local conditions and to
building characteristics, plus the instruc-
tion of the user in operating the system,
must be carried out by your heating con-
tractor.
As the user of new combustion equip-
ment, you may be obliged to notify your
local flue gas inspector of the installation
[check local regulations]. Local flue gas
inspectors will also inform you [where
appropriate] about work they may be
required to perform on your combustion
equipment (e.g. regular checks, clean-
ing).
g Gas council no.
Rated heating output range
kW
Gas condensing boil-
er
Gas condensing combi
boiler
6.5 - 19 41-819-26 —
6.5 - 26 41-819-27 47-819-20
8.8 - 30 41-819-28 47-819-21
8.8 - 35 41-819-29 47-819-22
Terminology
To provide you with a better understand-
ing of the functions of your Viessmann
control unit some terminology is
explained.
The terms are marked as follows:
Further information can be found
in chapter "Terminology" in the Ap-
pendix.
Your system is preset at the factory
Your heating system is preset at the fac-
tory and is therefore ready for opera-
tion.
Your heating contractor can make fur-
ther settings for you during commission-
ing.
You can change the settings individually
at any time to suit your requirements.
Power failure
All settings are saved if there is a power
failure.
Introductory information
Commissioning
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Central heating
■Room temperature
Never overheat your rooms. Every
degree of room temperature reduction
saves up to 6 % on your heating bills.
Set your room temperature no higher
than 20 °C.
■Operating modes:
If you do not require central heating,
select one of the following operating
modes:
– If you do not wish to heat rooms in
summer but require domestic hot
water, set rotary selector "tw" (see
page 13) and turn rotary selector
"tr" to "0".
– If you require neither central heating
nor DHW for a prolonged period, set
rotary selectors "tr" and "tw" to
"0".
■Ventilation:
To ventilate, open the windows fully for
a brief time and meanwhile close the
thermostatic valves (if there is no
domestic ventilation system installed).
■Roller shutters:
Close roller shutters (where installed)
at dusk.
■Thermostatic valves:
Ensure that thermostatic valves are
properly set.
■Radiators:
Never cover radiators or thermostatic
valves.
DHW heating
■DHW temperature:
Never set the DHW cylinder tempera-
ture excessively high (see page 13).
■DHW consumption:
Consider showering instead of running
a bath. A shower generally uses less
energy than a full bath.
Tips for more comfort
DHW heating
■Comfort function:
If the comfort function is switched on,
the instantaneous water heater is kept
up to temperature (standby). Hot water
is therefore quickly available. Start
comfort function (see page 14).
Introductory information
Energy saving tips
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Opening the control unit
The controls and display elements are
behind the cover flap at the front.
Controls and display elements
AB C D E
r
r
A COMFORT
1
0
2
3
4
°C
06
bar
APressure gauge
BDisplay
Ctw rotary selector "DHW tempera-
ture"
Dtr rotary selector "heating water
temperature" and "reset"
EON/OFF switch
About the controls
Summary of controls and indicators
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Indicators on display
r
AECO COMFORT SERV
8:8:8°C
°F
A B C D
LK H G F E
8:8:8
AHeating mode
BDHW heating
CDisplay value or fault code
DTemperature in °C or °F (in conjunc-
tion with the display value)
EService setting active (only for con-
tractors)
FComfort function switched on
GComfort function switched off
HCurrent burner output
KBurner in operation
LFault
Operating mode of the heating system
Operation without room temperature control unit
Further information can be found
in chapter "Terminology" in the Ap-
pendix.
Set the required heating water tempera-
ture at rotary selector "tr" (see
page 13).
Operation with room temperature control unit
Further information can be found
in chapter "Terminology" in the Ap-
pendix.
Please make any adjustments to the
connected room temperature control unit
using the relevant operating instruc-
tions.
About the controls
Summary of controls and indicators (cont.)
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Note
The heating water temperature must be
set sufficiently high using the rotary
selector "
tr
" for the desired room tem-
perature to be reached.
Weather-compensated operation
Further information can be found
in chapter "Terminology" in the Ap-
pendix.
In weather-compensated operation, the
boiler water temperature is regulated
according to the outside temperature.
Rotary selector "tr" enables you to
increase or reduce the room tempera-
ture.
About the controls
Operating mode of the heating system (cont.)
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We recommend you contact your local
heating contractor if you are planning to
start up a heating system that has not
been used for a long period.
1
0
2
3
4
bar
1. Check the pressure of your heating
system on the pressure gauge.
Minimum system pressure 0.8
bar.
If the system pressure is too low,
please notify your heating contrac-
tor.
2. In open flue operation:
The combustion air is taken from the
installation room.
Check whether the ventilation aper-
tures in the installation room are open
and unobstructed.
3. Open the gas shut-off valve.
4. Turn on the ON/OFF switch.
Your heating system and room tem-
perature control unit (if connected)
are now ready for operation.
Shutting down the heating system
With frost protection monitoring
Further information can be found
in chapter "Terminology" in the Ap-
pendix.
If you do not wish to use your boiler for
several days you can switch the unit
off.
Start-up/shutdown
Starting the heating system
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r
Turn both rotary selectors to "0".
Frost protection monitoring is now active
for the boiler and the DHW cylinder.
Note
Frost protection for the entire heating
system - see operating instructions for
the room temperature control unit.
Without frost protection (shutdown)
Shut down your heating system com-
pletely if it will not be needed for long
periods of time (several months).
We recommend you contact your local
heating contractor if you are planning to
take your heating system out of use for
long periods. Your heating contractor
can then take any necessary action, sub-
ject to requirements, e.g. frost protection
or preserving the heating surfaces.
1. Close the gas shut-off valve and safe-
guard against unauthorised reopen-
ing.
2. Turn off the ON/OFF switch.
The power to the system is now
switched off.
Note that the system is no longer
frost-protected.
Start-up/shutdown
Shutting down the heating system (cont.)
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Further information can be found
in chapter "Terminology" in the Ap-
pendix.
r
Switching on:
Move rotary selector "tr" to the
required heating water temperature.
Note
If a room temperature control unit is con-
nected, use this unit to set the desired
room temperature. The number "1" to "6"
represents an approximate temperature
range of 30 °C to 80 °C, e.g. "1" = 30 °C,
"6" = 80 °C.
If central heating is active, the display
shows "r".
Switching off:
Turn rotary selector "rt" to "0".
Domestic hot water
Further information can be found
in chapter "Terminology" in the Ap-
pendix.
Select the DHW temperature in accord-
ance with your personal requirements
(e.g. for showering).
Note
If the boiler does not have a DHW cylin-
der connected or an integral instantane-
ous water heater, turn rotary selector
"
tw
" to "0".
Settings
Heating
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Switching on:
Move rotary selector "tw" to the
required DHW temperature. The hot
water temperature can be adjusted
between 45 °C ("1") to 60 °C ("6").
If DHW heating is active, the display
shows "w".
Switching off:
Turn rotary selector "tw" to "0".
Switching the comfort function on and off
Further information can be found
in chapter "Terminology" in the Ap-
pendix.
If the comfort function is switched on, the
instantaneous water heater is kept up to
temperature (standby). Hot water is
therefore quickly available.
Switching on the comfort function
Briefly turn rotary selector "tw" clock-
wise as far as it will go (for less than 2 s)
and turn anti-clockwise again.
"COMFORT" appears on the display.
Settings
Domestic hot water (cont.)
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Switching off the comfort function
Briefly turn rotary selector "tw" anti-
clockwise as far as it will go (for less than
2 s) and turn clockwise again.
"ECO" appears on the display.
Settings
Switching the comfort function on and off (cont.)
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Further information can be found
in chapter "Terminology" in the Ap-
pendix.
A
°C
06
The boiler water temperature appears on
the display at all times during operation.
Displays
Heating water temperature
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Cause Remedy
The heating system is off. ■ Turn on the ON/OFF switch " " (see
figure on page 8).
■ Switch ON the mains isolator, if instal-
led (outside the boiler room).
■ Reset the MCB in the power distribution
board (main domestic MCB).
Control unit or room temperature control
unit incorrectly adjusted.
■" " has to be adjusted (see page 13).
■ Check and correct the heating water
temperature at rotary selector "
" (see page 13).
■ For room temperature control unit:
Check and correct the room tempera-
ture required (see operating instruc-
tions for the room temperature control
unit).
Only when operating with DHW heating:
DHW priority is enabled (" " is dis-
played).
Wait until the DHW cylinder has been
heated up (" " symbol disappears).
In the case of operation with an instanta-
neous water heater, stop DHW draw-off.
No fuel. With LPG:
Check the fuel reserves and re-order if
required.
With natural gas:
Open the gas shut-off valve. If necessary,
check with your gas supply utility.
The "U" symbol is shown on the display. Notify your heating contractor of the fault
code shown.
Symbol "U" flashes on the display. The
burner does not start.
Reset the burner fault (see page 20).
Air in the heating system. Bleed radiators.
The burner is switched off. Blockage in
the ventilation air supply or flue system.
Notify your local heating contractor.
What to do if...
Rooms are too cold
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Cause Remedy
Control unit or room temperature control
unit incorrectly adjusted.
Check and correct the room temperature
or boiler water temperature (see
page 13).
Room temperature control unit op-
erating instructions
The "U" symbol is shown on the display. Notify your heating contractor of the fault
code.
There is no hot water
Cause Remedy
The heating system is off. ■ Turn on the ON/OFF switch " " (see
page 8).
■ Switch ON the mains isolator, if instal-
led (outside the boiler room).
■ Reset the MCB in the power distribution
board (main domestic MCB).
Control unit incorrectly adjusted. Check settings and correct if required:
■"tw" has to be adjusted (see
page 13).
■ Check and correct the DHW tempera-
ture at rotary selector "tw" (see
page 13).
No fuel. With LPG:
Check the fuel reserves and re-order if
required.
With natural gas:
Open the gas shut-off valve. If necessary,
check with your gas supply utility.
The "U" symbol is shown on the display. Notify your heating contractor of the fault
code shown.
Symbol "U" flashes on the display. The
burner does not start.
Reset the burner fault (see page 20).
What to do if...
Rooms are too hot
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Cause Remedy
The control unit is incorrectly adjusted. Check and correct the DHW temperature
(see page 13).
"U" flashes on the display
Cause Remedy
The burner does not start. Reset the burner fault (see page 20).
"U" is shown on the display
Cause Remedy
Heating system fault. Notify your heating contractor of the fault
code.
Fault code "58" is shown on the display
Cause Remedy
No DHW cylinder is connected and rotary
selector "tw" is not set to "0".
Turn rotary selector "tw" to "0".
What to do if...
The DHW is too hot
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Any fault in the heating system will be
shown on the display.
You can check the fault code on the dis-
play and then notify your heating con-
tractor accordingly. This allows the heat-
ing contractor to better prepare for the
service call and may save additional
travelling costs.
2f
Resetting a burner fault
Note
If the "
U
" fault flashes on the display and
a fault code with "F" is shown, the burner
is locked out.
r
Turn rotary selector "rt" to "U
RESET" for less than 2 s, then back into
the control range.
What to do if...
Fault indicator on display
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