STIEBEL ELTRON | COMMISSIONING | NOTIFICATION LIST LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart | Operation Instruction | Stiebel Eltron COMMISSIONING | NOTIFICATION LIST LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart Operation Instruction

Stiebel Eltron COMMISSIONING | NOTIFICATION LIST LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart Operation Instruction
COMMISSIONING‌| N
‌ OTIFICATION LIST
Central ventilation unit with heat recovery‌/ ‌Integral system with air/water heat
pump for central DHW heating and heating
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LWZ
LWZ
LWZ
LWZ
LWZ
LWZ
8
5
5
8
5
5
CS Premium
CS Premium
S Plus
S Trend
S Trend
S Smart
CONTENTS‌| COMMISSIONING‌| ‌NOTIFICATION LIST
General information
1.
1.1
General information�����������������������������������������2
Relevant documents�������������������������������������������� 2
2.
2.1
Commissioning�����������������������������������������������2
Commissioning via the programming unit����������������� 2
3.
3.1
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3.2
Settings�������������������������������������������������������4
Menus and parameters����������������������������������������� 4
INFO���������������������������������������������������������������� 4
DIAGNOSIS�������������������������������������������������������� 4
PROGRAMS������������������������������������������������������� 5
STANDARD SETTING��������������������������������������������� 5
SETTINGS���������������������������������������������������������� 5
HEATING����������������������������������������������������������� 5
DHW���������������������������������������������������������������� 6
VENTILATION����������������������������������������������������� 7
COOLING����������������������������������������������������������� 9
SOLAR THERMAL������������������������������������������������ 10
SCREED DRYING PROG.���������������������������������������� 10
COMMISSIONING������������������������������������������������ 11
CONTRACTOR���������������������������������������������������� 12
ENTER CODE����������������������������������������������������� 12
FAULT SEARCH��������������������������������������������������� 12
SWITCH ON MANUALLY���������������������������������������� 12
EVAPORATOR���������������������������������������������������� 12
REFRIGERATION UNIT������������������������������������������ 13
VENTILATION���������������������������������������������������� 13
PUMPS������������������������������������������������������������ 13
PUMP CYCLES���������������������������������������������������� 13
EMERGENCY MODE AUTO������������������������������������� 14
POWER-OFF������������������������������������������������������ 14
PROCESS VALUES����������������������������������������������� 14
PROCESS STATUS����������������������������������������������� 14
ANALYSIS��������������������������������������������������������� 14
INVERTER��������������������������������������������������������� 14
Economy settings����������������������������������������������� 15
4.
4.1
Troubleshooting�������������������������������������������� 16
Notification list�������������������������������������������������� 16
1.
General information
These instructions are intended for qualified contractors.
1.1
Relevant documents
336513‌
Operation
Installation instructions
Note
Please see the device's operating instructions for information on "Customer service and guarantee" and "Environment and recycling".
2.
Commissioning
2.1
Commissioning via the programming unit
In addition to the factory-fitted programming unit, external programming units can also be connected to the appliance.
If more than one programming unit has been connected to the
appliance, assign each one an individual, unique „TERMINAL ADDRESS“ in the „COMMISSIONING“ menu.
If the terminal addresses were not assigned, there would be conflicts in communication between the appliance and the programming units, as every programming unit is given the same standard
value for the terminal address parameter.
Assign value 1 to parameter „TERMINAL ADDRESS“ of the first
external programming unit. Assign value 2 to parameter „TERMINAL ADDRESS“ of the second external programming unit and
value 3 to parameter „TERMINAL ADDRESS“ of the third external
programming unit.
Note
If, before commissioning for the intended use, you want
to dry out or heat the building, continue with the following chapter; otherwise with chapter "Commissioning for
the intended operation".
2.1.1 Sizing
The design outside temperature for the maximum heat pump
output (dual mode point) in heating mode is an indicator for the
output controller of the heat pump. The design outside temperature is used to optimise the compressor speed control subject to
the outside temperature. Here you should adjust the dual mode
temperature. In a mono mode design, the dual mode temperature
is the standard outside temperature.
ff
Use the standard outside temperature and the heat load of
the building to determine the standard design point.
Standard design point below the max. heating output curve
ff
If the standard design point is below the max. heating output
curve, determine the percentage value by estimating the distance between the curve below and the curve above.
ff
In the parameter „HEATING SYS OUTPUT SIZING“, enter the
percentage value determined.
ff
Set the „DESIGN TEMPERATURE“ parameter to the standard
outside temperature.
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COMMISSIONING‌| ‌NOTIFICATION LIST
Commissioning
Standard design point above the max. heating output curve
ff
If the standard design point is above the max. heating output
curve, you must set parameter „HEATING SYS OUTPUT SIZING“ to 100 %.
ff
Draw in a straight line for the heat load. This heat load line
starts at the standard design point and ends at point (20 °C,
0 kW).
ff
Determine the point of intersection of the max. heating output curve with the heat load line. This is the dual mode point.
ff
Set the „DESIGN TEMPERATURE“ parameter to the dual mode
temperature.
2.1.2 Commissioning for drying out or heating
Note
We recommend setting the design point to -20 °C and
80 % before drying out.
Note
During drying out, the evaporator can ice up and condensate can form on the housing parts.
ff
Isolate all poles of the compressor and electric emergency/
booster heater from the power supply by tripping their MCBs.
ff
Open the thermostatic valves or zone valves of all radiators
and/or heating circuits.
ff
Open the automatic air vent valve in the heating circuit and
in the appliance. Automatic air vent valves are located in the
cylinder module as well as in the refrigeration unit at the
pump and the multifunction assembly.
ff
Start the appliance using the control unit MCB. Subject to demand, the appliance components (pumps, fans) start.
The tap symbol appears on the display. The appliance is in DHW
heating mode.
After a while, fault F07 is indicated, which shows that the exhaust
air filter has failed. This is normal as the exhaust air filter is supplied via the compressor MCBs/fuses.
ff
Switch manual mode ON.
ff
In the „DHW“ menu set the „DHW SET MANUAL“ parameter
to 10 °C.
The appliance switches over to heating mode. The radiator symbol
appears on the display. In this operating mode, the heating circuit
pump should run until no more air noise can be heard.
ff
Switch automatic mode ON.
ff
Shut down the appliance by isolating all poles of all supply
circuits from the mains.
ff
Switch ON the compressor MCBs.
ff
Switch the controller MCBs back ON.
The compressor starts after some time.
Once the appliance has operated in the dry heating (screed drying)
program without fault for at least two days you can enable the
electric emergency/booster heater.
ff
To do so, switch on the MCBs for the electric emergency/
booster heater.
If all dusty work has stopped, you can back up the drying process
with ventilation.
ff
Set the fan stage for day mode („DAY STAGE“) to 2.
2.1.3 Commissioning for the intended operation
If the ventilation should not or cannot be operated during the
drying out phase, and the air lines are routed through a cold area,
prevent the ingress of warm moist air into the air lines where it
could condensate.
Before switching on the MCBs, carry out the following checks in
addition to those in chapter „Checks before commissioning“:
-- Was the heating system vented?
-- If an air heating coil is used as the only heating system: Was
the cylinder temperature sensor positioned correctly?
-- Has the DHW heating line of the heating circuit been vented?
See chapter „Installation / Filling and venting the heating
system“ on venting the DHW heating line.
ff
Reset the MCBs.
!
Material losses
Check the exhaust air fan. If the exhaust air fan drags,
switch off the appliance and align the exhaust air fan.
See chapter "Troubleshooting".
ff
Using the „HUMIDITY PROTECTION“ parameter switch on the
humidity protection function.
2.1.4 Checking the minimum flow rate of the heat sink
The appliance is designed in such a way that no buffer cylinder
is required to provide hydraulic separation of the flow in the heat
pump circuit and the heating circuit in conjunction with area heating systems. For installations with several heating circuits, we
recommend the use of a low loss header.
ff
In the „FAVOURITES“ menu, select the „FLOW RATE“
parameter.
The setting is made in heat pump mode. In order to do this, firstly
make the following settings:
ff
Operate the appliance in heating mode. For this, switch the
appliance to „MANUAL MODE“, for example. Note down the
previously set value and set the „DHW SET MANUAL“ parameter to 10 °C.
ff
Increase the „MANUAL SET HC“ parameter to its maximum
value so that the compressor starts.
Wait until the appliance has been in operation for at least five
minutes. The display must show the following symbols:
Note
Check the exhaust air fan. If the exhaust air fan drags,
switch off the appliance and align the exhaust air fan.
See chapter "Troubleshooting".
ff
Start the dry heating (screed drying) program. Ensure that all
radiators or heating circuits are and remain open.
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Settings
Minimum flow rate without buffer cylinder or low loss header
In such cases, one or more heating circuits in the heating system
must be left open. The open heating circuit(s) should be installed
in the lead room (room in which the external programming unit
is installed, e.g. the living room or bathroom). The lead room can
be individually controlled using the external programming unit,
or indirectly by adjusting the heating curve, or by activating the
room influence.
ff
Fully open the heating circuit(s) in the lead room.
ff
Close all other heating circuits.
ff
If an overflow valve is installed in the heating system, close
this fully before determining the minimum flow rate.
ff
Set the „PUMP SPEED HEATING“ parameter so that the minimum flow rate required for the system operation is assured
(see chapter „Specification / Data table“). You can check the
current flow rate via the value of the previously set favourite
„FLOW RATE“.
Note
Never change the "PUMP SPEED DHW" parameter. The
pump speed for DHW operation was optimised at the
factory.
ff
Activate „DHW BUFFER MODE“ only if an air heating coil is
used as the only heating system. For this, in the menu call
up the „DHW“ function and then the „STANDARD SETTING“
field.
ff
Heat the system up to the maximum operating temperature. For this, set the appliance to manual mode and select
the corresponding set values. Then vent the heating system
again.
!
Material losses
Observe the maximum system temperature in underfloor
heating systems.
3.
Settings
3.1
Menus and parameters
Apart from the selected set values, as described in chapter „Operation“ of the operating instructions, you can also adjust the system-specific parameters. These parameters are protected against
accidental adjustments and are only accessible after entering a
four-digit code. At the factory, the code is set to 1000.
Flow rate with buffer cylinder or low loss header
ff
Set the „PUMP SPEED HEATING“ parameter so that the
nominal flow rate required for system operation is assured
(see chapter „Specification / Data table“). You can check the
current flow rate via the value of the previously set favourite
„FLOW RATE“.
Note
Never change the "PUMP SPEED DHW" parameter. The
pump speed for DHW operation was optimised at the
factory.
2.1.5 Completing commissioning
ff
Set all required parameters that you will find in the „COMMISSIONING“ menu.
ff
Start ventilation if you are sure that no more large amounts
of dust are going to be generated.
ff
Set the following values:
DAY STAGE
NIGHT STAGE
STANDBY STAGE
MANUAL STAGE
PARTY STAGE
Note
On account of the moisture contained in building materials, new buildings have a higher heat demand than will
be the case one or two years later. It may therefore be
required to set a higher dual mode point.
Note
The following describes all parameters that should only
be set by you the qualified contractor. These parameters
are protected by an access code.
There are also parameters that are reserved with a special code for our service department only. The functions
this affects do not need to be adjusted for the regular
operation of the appliance.
Note
An overview of all parameters can be found in the operating instructions.
„INFO
„
2
1
0
2
3
See operating instructions.
„DIAGNOSIS
„
See operating instructions.
ff
Set the „DUAL MODE POINT“ parameter in accordance with
the heat demand of the building.
If the appliance is designed for mono mode operation, we recommend setting the dual mode point to the standard outside temperature. The standard outside temperature can be found in the
technical guides.
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COMMISSIONING‌| ‌NOTIFICATION LIST
Settings
„PROGRAMS
„
 MAX FLOW TEMP HTG.
Under „MAX FLOW TEMP HTG.“, the maximum flow temperature
can be set according to local conditions, for example to protect
an underfloor heating system from excessive temperatures. If this
temperature is exceeded, the compressor and electric emergency/
booster heater are switched off.
… STANDARD SETTING
 MAX. ADVANCE
With the „MAX. ADVANCE“ parameter you determine for what
period, prior to starting day mode, the appliance switches back
to standard operation. This achieves the required set value being
reached again at the end of setback mode. This means, for example, that following a return from holiday a building is warm, well
ventilated and that the DHW inside the cylinder is at the required
temperature. In heating mode, for half of the time selected here
the electric emergency/booster heater will be blocked, so that the
heat pump alone heats the building, subject to the output being
sufficient.
„SETTINGS
„
This is a limiter function. Compressor and electric emergency/
booster heater restart when the maximum flow temperature is
undershot again.
This internal limiter function does not replace the temperature
limiter for appliance-independent underfloor heating system protection, as required by EN 1264-4.
 SUMMER MODE
At the value set here for the outside temperature, there is a
changeover between summer and winter mode. In summer mode,
the heating is switched off.
Note
In summer mode, the "OUTSIDE TEMP MIN CYC" parameter will not be taken into account. The heating circuit
pump runs as often as is set in the "MINIMUM CYCLES"
parameter.
… HEATING
 STANDARD SETTING
 PROP. COMP.
This parameter is used to set the output matching of the heat pump
per kelvin control deviation.
 I COMPONENT INV
Here you select the factor for the integral component of the healing
output controller. The integral component influences the stabilisation speed of the heat pump output controller. The heat pump
output controller functions primarily as an integral controller. The
control deviation (the differential between the set and actual heating circuit temperatures) is totalled up over the time. The result
is the integral of the control deviation in Kelvin minutes. Every
time the value specified by this parameter is reached, the heat
pump is operated at the maximum output stage. A large integral
component reduces the speed of the heat pump output controller.
This setting is recommended for slow-response heating systems,
such as underfloor heating systems.
A small integral component increases the speed of the heat pump
output controller. This setting is suited to highly responsive heating systems, such as radiator heating. The value is reset after a
power failure and after DHW heating. The integration is stopped
if the „HTG OUTPUT RELATIVE“ output figure is less than -10 %
or greater than 210 %. If the runtime is too short, this results in
inaccuracies in the computation.
 MAX BOOSTER STG HTG
Up to three electric booster stages can be enabled. Since the heat
pump has only a low heating output at extremely low outside
temperatures, all three stages of the electric emergency/booster
heater should usually be enabled. The control unit ensures that
as much heat as possible is generated by the heat pump, and the
electric emergency/booster heater only starts when the heating
output of the heat pump is no longer adequate.
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 HYST. SUMMER MODE
Here, the switching hysteresis for the changeover from summer
to winter mode is determined.
Conditions
Outside temperature‌≥ ‌SUMMER MODE‌+ ‌HYST. SUMMER Heating blocked
MODE‌/‌2
Outside temperature‌≤ ‌SUMMER MODE‌- ‌HYST. SUMMER Heating enabled
MODE‌/‌2
 OUTSIDE T ADJUSTMENT
The outside temperature is adjusted to prevent an offsetting of
the heating curve when there are rapid changes in the outside
temperature resulting in a constant cycling of the heat pump. An
average value is calculated over the selected time. The adjustment
can be varied from 0 to 24 hours under this parameter.
 DUAL MODE POINT
The electric emergency/booster heater for heating mode is enabled if the outside temperature drops below the dual mode point.
The electric emergency/booster heater is blocked if the outside
temperature lies above the dual mode point. You can define this
temperature threshold with the „DUAL MODE POINT“ parameter.
Note
If the heating output of the heat pump is inadequate at
low outside temperatures, adjust the dual mode point to
a higher temperature.
 BOOSTER TIMEOUT
After starting the heat pump when heat demand is below the dual
mode point, the electric emergency/booster heater is blocked for
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COMMISSIONING‌| ‌NOTIFICATION LIST
Settings
the time set under „BOOSTER TIMEOUT“. This prevents the electric
emergency/booster heater switching on unnecessarily.
 OUTSIDE T CORRECTION
It may be advisable to correct the actual temperature value, because of tolerances of the outside temperature sensor and to compensate for external influences, for example having the sensor in
an unfavourable position. In parameter „OUTSIDE T CORRECTION“,
enter the difference between the actual outside temperature and
the outside temperature displayed on the programming unit.
Example:
Actual temperature
Displayed temperature
New parameter value
°C
°C
19
21
-2
Heating by the solar thermal system takes priority over the heat
pump if a solar thermal system is connected and there is adequate
insolation. This, on the other hand, takes priority over the electric
emergency/booster heater.
 BOOSTER T ACTIVATE
The electric emergency/booster heater for DHW heating is immediately switched on if the outside temperature falls below the value
selected under the „BOOSTER T ACTIVATE“ parameter. This means
heating is not interrupted for longer than necessary.
If the outside temperature lies above the value set in the „BOOSTER T ACTIVATE“ parameter, then the electric emergency/booster
heater will only start after expiry of the „BOOSTER TIMEOUT“, but
no sooner than after 10 minutes.
 PASTEURISATION
 SUPPR TEMP MEAS
After the heating circuit pump has started, the actual flow and
return temperatures remain suppressed for the time set under
the „SUPPR TEMP MEAS“ parameter. The actual sensor values
are only used to calculate the heating system heat demand after
expiry of this time.
 DESIGN TEMPERATURE
With this parameter you determine the reference point for the
pre-control curve „Heating output estimated“ at which the output figure „Heat demand“ applies. See chapter „Commissioning /
Commissioning / Sizing“.
 HEATING SYS OUTPUT SIZING
With this parameter you determine the reference point for the
pre-control curve „Heating output estimated“ at which the „Design
temperature“ applies. See chapter „Commissioning / Commissioning / Sizing“.
… DHW
 STANDARD SETTING
 HYSTERESIS
This determines the switching hysteresis for DHW operation.
DHW heating starts when the temperature falls below the set
DHW temperature minus „HYSTERESIS“. DHW heating stops
when the set DHW set temperature plus „HYSTERESIS“ has been
reached.
 MWM HYSTERESIS
This parameter has no function for this appliance.
 BOOSTER TIMEOUT
DHW is generally heated by heat pump (compressor mode). The
electric emergency/booster heater is switched on only if the required DHW temperature in the cylinder has not been reached
after „BOOSTER TIMEOUT“ has expired.
When starting the appliance, the water in the DHW cylinder is
heated up to the temperature set for pasteurisation. Subsequently, the cylinder is heated up for pasteurisation according to the
interval (specified in days) set under the „PASTEURISATION“ parameter. The start point for the next interval occurs only when the
temperature set in the „PASTEURISATION TEMP.“ parameter has
been reached. This interval applies only if the DHW temperature
has not in the meantime exceeded the temperature set in the
„PASTEURISATION TEMP.“ parameter on account of other appliance functions.
ff
After modifying the set interval, press the reset button for
the electronics to start a new cycle immediately. Otherwise
the old cycle will be finished first.
 MAX DHW HTG DUR.
Using the „MAX DHW HTG DUR.“ parameter, the maximum duration for DHW heating is specified. If the set DHW temperature
in the cylinder has not been reached after this number of hours,
there is a fault with the DHW heating (Fault 15), and DHW heating
is blocked until 22:00 h. After this, DHW heating is restarted. If
the set DHW temperature is not reached again, DHW heating is
blocked until 22:00 h the following day.
 PASTEURISATION TEMP.
As part of every pasteurisation event to protect against the growth
of legionella bacteria, the water in the DHW cylinder is heated up
to the temperature set in the „PASTEURISATION TEMP.“ parameter.
For effective pasteurisation, you should set this parameter to at
least 55 °C. As temperatures above 50 °C are not reached with
the heat pump alone, the enabled electric emergency/booster
heater stages always switch on during the heat-up process for
pasteurisation.
 PASTEURISATION TIME
In the parameter „PASTEURISATION“, you have set how often pasteurisation to protect against the growth of legionella bacteria is
to be carried out (every X days). With the parameter „PASTEURISATION TIME“ you set the time of day at which that pasteurisation
will be carried out.
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COMMISSIONING‌| ‌NOTIFICATION LIST
Settings
 DHW BOOSTER STAGE
 DHW OUTPUT WINTER
With the „DHW BOOSTER STAGE“ parameter you can enable up to
three stages of the electric emergency/booster heater. The heat
pump can only heat DHW up to a temperature of approx. 50 °C.
The electric emergency/booster heater is used for higher set DHW
temperatures.
Note
DHW heating may possibly not complete if the electric
emergency/booster heater has been blocked because
the high limit safety cut-out has tripped or the electric
emergency/booster heater has been switched off via an
external MCB. The entire room heating system is then
blocked for the time set under "MAX DHW HTG DUR.".
When outside temperatures are low, DHW heating cannot
be accelerated due to "BOOSTER TIMEOUT" and "BOOSTER T ACTIVATE", leaving the room heating system blocked
for prolonged times in this situation too. It is not possible
to enable less than one stage of the electric emergency/
booster heater.
 DHW BUFFER MODE
If you enable „DHW BUFFER MODE“, the DHW cylinder will be
used as a buffer cylinder for excess output. Use this parameter
exclusively for convector heaters.
 INTEGRAL SENSOR
This parameter has no function for this appliance. If there is no
integral sensor connected, this parameter must be set to „OFF“.
Options
OFF
ON
CONTROL
The appliance ignores the integral sensor.
The appliance makes use of the integral sensor when determining actual values.
The appliance controls DHW heating subject to the integral
sensor.
 INTEGRAL SENSOR CLASS
This parameter is used to specify the offset range of the integral
sensor. This parameter must be set during commissioning or spare
part replacement. The type plate on the left side of the appliance
specifies which integral sensor class must be set.
 2ND DHW CYLINDER
Enable this parameter if a second DHW cylinder is connected to the
appliance. In the delivered condition this parameter is disabled.
 MAX FLOW TEMP DHW
Using the „MAX FLOW TEMP DHW“ parameter, you can limit the
flow temperature in DHW mode. If this value is set too low, it may
not be possible for DHW heating to be completed. This can lead
to a fault message (F 15).
 DHW ECO
If the parameter „DHW ECO“ is set to „ON“, DHW is normally heated only by the heat pump. The electric emergency/booster heater
only backs up DHW heating in the case of very low outside temperatures or if DHW heating takes unusually long.
In „DHW ECO“ mode, DHW is initially heated according to the set
cylinder temperature. If the application limits of the heat pump
are reached before the required temperature, DHW heating is
terminated and the cylinder temperature that has been reached
is accepted as the new set DHW temperature in the parameter set
(„DHW SET DAY“, „DHW SET NIGHT“, „DHW SET STANDBY“). The
system „learns“ the maximum set DHW temperature that can be
reached with the compressor only. If „DHW ECO“ has the value
„OFF“, the electric emergency/booster heater starts if the heat
pump reaches its application limit.
 DHW OUTPUT SUMMER
In the parameter „DHW OUTPUT SUMMER“, you enter (as %) the
output of the compressor for DHW operation in summer. The lower
the value, the more energy efficient is DHW heating.
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In the parameter „DHW OUTPUT WINTER“, you enter (as %) the
set output of the compressor for DHW operation in the heating
season. This may result in heating being delayed. The higher the
value, the faster the DHW will be heated.
… VENTILATION
 FAN CONTROL
Option
FLOW RATE
DIFFERENTIAL PRESSURE
Standard setting‌: FLOW RATE
 DIFFERENTIAL PRESSURE
 SET DIFFERENTIAL PRESSURE
 I FACTOR
 P FACTOR
 FLOW RATE
 FAN STAGE VENT. AIR‌1
 FAN STAGE VENT. AIR‌2
 FAN STAGE VENT. AIR‌3
 FAN STG. EXTRACT AIR‌1
 FAN STG. EXTRACT AIR‌2
 FAN STG. EXTRACT AIR‌3
These parameters determine the air flow rates of the individual fan
stages. They should be set according to the design of the ventilation system. The control unit maintains a constant flow rate. The
set value for „STAGE 0“ is generally 0 m³/h for both fans.
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Settings
 PASSIVE COOLING
If an additional programming unit for heating circuit 1 or a room
temperature sensor is connected in the living space, the actual
room temperature is taken into account instead of the set room
temperature.
 PASSIVE COOLING
At high outside temperatures, temperatures in the house can rise
significantly above the set room temperature. With the „PASSIVE
COOLING“ function, the building can be supplied with cooler outdoor air by bypassing the cross-countercurrent heat exchanger.
Temperatur
 PASS. COOL EXP. AIR
This function is currently not available and must remain disabled.
10.00‌ Time
Außentemperatur
TATA
Outside
temperature
Passive cooling ends no later than at 10:00 h.
 AIR STOP SUMMER DHW
msolltempera-1
3 °C
The appliance has a preheating coil for preheating the outdoor
air before it enters the cross-countercurrent heat exchanger. This
is not required in summer. You can use this parameter (options:
OFF | ON) to deactivate the appliance‘s ventilation function during
DHW heating. This parameter is only available if a DHW cylinder
has been integrated or connected.
msolltempera-2
Rsoll
msolltempera-3
3 °C
 HUMIDITY PROTECTION
2‌ hours
2h
8h
Passive
cooling
Maximalzeit
Passivkühlung
Passive
cooling pre- Passive
cooling
Passivkühlung
Passivkühlung
pared
active
vorbereitet
aktiv
26_04_01_0108
Minimum
time
T Rset
3 °C
Mindestzeit
TA T>AT>Rsoll
+ 3+°C
1 Set room temperature + 3 K
2 Set room temperature TRset
3 Set room temperature - 3 K
Passive cooling will be enabled if the outside temperature has, for
at least two hours, been 3 K higher than the set room temperature
for heating circuit 1, as set with the „ROOM TEMPERATURE DAY“
parameter in the „HEATING“ menu. If the outside temperature
then drops 3 K below the set room temperature with a room temperature sensor connected, passive cooling is activated.
Options
OFF
Activated passive cooling has no effect. The fans operate as programmed. Windows stay shut.
EXTRACT The supply air fan is stopped and the extract air fan output is
AIR
increased by 20 % (e.g. from 47 % to 67 %). This means cool
outdoor air is drawn into the room through the open windows.
On hot days, this supports the cooling with cool night air when
a window is open. In this case, open the windows in rooms supplied with air (living room, nursery and bedrooms), for example
using the "WINDOW OPEN" control signal.
SUPPLY AIR The extract air fan is stopped, and the supply air fan output is
increased by 20 %. In this case you do not have to open the windows. However, this option is less effective and does not work in
very airtight houses, i.e. if in the blower door test, the air change
value n50 is ≤ 1.
BYPASS
This option caters for systems where an external bypass was
installed on site. Both fans continue to run as programmed. The
"WINDOW OPEN" control signal is then used for the damper in the
bypass module.
SUMMER With summer cassette (option): The fans will switch off if the outCASSETTE side temperature is higher than the set room temperature. If the
outside temperature falls to 3 K below the room temperature, or
3 K below the set room temperature if there is no room temperature sensor, the fans are switched on and will run according to the
program. The "WINDOW OPEN" control signal is enabled.
 HUMIDITY PROTECTION
 HUM. THRESHOLD VALUE
 HUMIDITY HYSTERESIS
 HUM. MASKING TIME
 SET HUMIDITY MIN
 OUTPUT REDUCTION
 SET HUMIDITY MAX
 OUTPUT INCREASE
Options
OFF | ON
The appliance is equipped with humidity control that is intended
to protect your building against damage from humidity.
The humidity protection should always be switched on. The humidity protection is only effective in fan stage 0. In its delivered
condition, humidity protection is disabled, i.e. the „HUMIDITY
PROTECTION“ parameter is set to 0 („OFF“). For drying buildings,
the „HUMIDITY PROTECTION“ parameter must be set to 0 („OFF“).
When commissioning the appliance, switch the parameter „HUMIDITY PROTECTION“ to „ON“.
Humidity protection ventilation is activated when the ventilation is
switched off (stage 0). The fans are switched off during the first 24
hours after stopping ventilation. The humidity protection function
then checks every hour whether the rooms need to be ventilated.
For this, the fans operate for the duration of the „HUM. MASKING
TIME“ at stage 1. If the measured value exceeds the set humidity
level, both fans operate until the set humidity level falls below
the „HUMIDITY HYSTERESIS“. The humidity protection becomes
active as soon as the appliance starts following the restoration of
the power supply following a power failure.
A set humidity level function is implemented to protect the building from condensation forming on the inside of exterior walls. For
this, humidity of 100 % at 20 °C outside temperature is interpolated with the „HUM. THRESHOLD VALUE“ at -10 °C outside temperature. In order to take the type of building and the insulation of
the exterior walls into account, set parameter „HUM. THRESHOLD
VALUE“ as follows:
-- Brickwork, 25 cm thick, not insulated: 55 % (default)
-- Brickwork, 25 cm thick, 10 cm external insulation: 75 %
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Settings
Fan output correction (stage 1/2/3) subject to humidity
For output stages 1, 2 and 3, the qualified contractor can activate
a correction subject to humidity that orients itself on the internal
relative humidity. This enables an increase in the air flow rate
when the relative humidity is higher. In winter, an excessively
high air flow rate can contribute to the ambient air becoming too
dry. This can be counteracted by a reduction of the air flow rate
subject to the prevailing humidity level.
„SET HUMIDITY MIN“: This parameter sets the lower limit of relative humidity.
„SET HUMIDITY MAX“: This parameter sets the upper limit of relative humidity.
„OUTPUT INCREASE“: This parameter determines the percentage
by which the fan output is to be increased, if the value set in the
„SET HUMIDITY MAX“ parameter is exceeded by a margin greater
than the „HUMIDITY HYSTERESIS“.
„OUTPUT REDUCTION“: This parameter determines the percentage
by which the fan output is to be reduced, if the value set in the
„SET HUMIDITY MIN“ parameter is not reached by a margin greater than the „HUMIDITY HYSTERESIS“. In the delivered condition,
„OUTPUT INCREASE“ and „OUTPUT REDUCTION“ are set to 0 %.
This disables the correction of fan output subject to humidity. The
percentage entered with the „OUTPUT INCREASE“ and „OUTPUT
REDUCTION“ parameters relates to the maximum fan output and
not to the currently selected fan output.
 STOVE / FIREPLACE
If operating combustion equipment in the accommodation, you
can go to the „STOVE / FIREPLACE“ menu to set how the ventilation
unit responds when a signal transmitter is connected to terminal
XD03-13/14, which switches when the combustion equipment is
operated. In the „STOVE / FIREPLACE“ menu there are five options,
of which only one can ever be enabled at a time (indicated by a
filled box).
Option
OFF
No action
N/O CONTACT OFF With a 230 V input signal, the supply air fan, extract air
fan, exhaust air fan and compressor are switched off.
N/C CONTACT OFF With a 0 V input signal, the supply air fan, extract air fan,
exhaust air fan and compressor are switched off.
N/O MONITORING With a 230 V input signal, the extract air fan, exhaust air
fan and compressor are switched off when the supply air
fan stops.
N/C MONITORING With a 0 V input signal, the extract air fan, exhaust air fan
and compressor are switched off when the supply air fan
stops.
 AIR/AIR HE (air/air heat exchanger)
 MAX DEFROST DUR.
Defrost terminates if, during defrosting the air/air heat exchanger, the maximum defrost duration is exceeded.
 DEFR START THRESHOLD
Here, you specify the speed change (in %) from which defrost
begins.
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 FILTER SPEED
The air flow rate is continuously adjusted. If the filter is dirty, the
fan speed increases. If it is above the start value by the set value
(in %), the filter symbol shows that the filter is dirty.
 FILTER CHANGE VOLUME
The prompt for filter change via display of the „Filter change“ symbol is time controlled and subject to air volume. This parameter
serves to define the air volume that will trigger a filter change
prompt. Unit‌:‌ 1000‌ m³/h
 SERVICE
 RUNTIME FILTER
This value indicates how many days have passed since the last
filter reset.
 RESET FILTER
When you set this parameter to „ON“, a filter reset will be triggered.
… COOLING
The „Cooling“ menu will only be shown if the appliance recognises
an external programming unit connected to the BUS.
!
Material losses
In the "AREA HEATING SYSTEM" mode, dew point monitoring is active. There is a high risk of severe building
damage if cooling is provided by means of an area heating system in "Fan convectors" operating mode.
ff
Set the following parameters for the heating circuits:
 COOLING MODE HC1‌/ ‌COOLING MODE HC2
 COOLING MODE HC1
 COOLING SYSTEM HC1
 HC TEMP. COOLING HC1
 HYST. ROOM TEMP. HC1
OFF | ON
AREA COOLING‌| ‌FAN COOLING
To allow the appliance to cool, you must set the „COOLING MODE“
parameter to the value „ON“.
Cooling is enabled when the appliance is in summer mode and the
outside temperature exceeds the set room temperature for heating (parameter „ROOM TEMPERATURE DAY“ in menu „HEATING /
ROOM TEMPERATURES HC1“ or „ROOM TEMPERATURES HC2“)
for 2 hours by 3 K.
If the room temperature is then higher than the set room temperature for cooling by the amount set in the „HYST. ROOM TEMP.“
parameter, cooling will be prepared. The display shows a snowflake. The circulation pump starts, the three-way valve changes
over to the heating circuit and the „cooling“ output is activated in
order to, for example, open the thermostatic valves in the rooms
to be cooled.
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Settings
 STANDARD SETTING
 COLL. PROTECT TEMP
 COOLING CAPACITY
With the parameter „COOLING CAPACITY“ you determine the maximum set cooling capacity of the compressor. The value must be
set as low as possible, to achieve the longest possible runtimes
for the compressor. For large building floor areas that require a
high cooling capacity the value must be increased.
If the adjustable „COLL. PROTECT TEMP“ has been reached and
„COLLECTOR PROTECTION“ enabled with the value „ON“, the DHW
cylinder is heated to the temperature set under „DHW SOLAR
TEMP.“. The selected „MAX FLOW TEMP DHW“ terminates the process. If, after maximum cylinder heating, the collector temperature
exceeds the set value, the solar circuit pump is stopped and blocked
until the cylinder temperature meets the following condition:
„DHW TEMPERATURE“ ≤ „DHW SOLAR TEMP.“-5 K hysteresis.
 HYST. FLOW TEMP.
WARNING Burns
Temperatures in excess of 60 °C can be reached. There
is a risk of scalding at outlet temperatures in excess of
43 °C.
The compressor starts if the flow temperature lies higher than
the set flow temperature for cooling by the amount of the „HYST.
FLOW TEMP.“. The compressor stops when it is lower than this
by the amount of flow temperature hysteresis. The dew point is
monitored in area heating systems.
The dew point is that temperature at which humidity in the air
begins to condensate. The compressor is blocked (snowflake flashes) once the flow temperature is within 2 K of the dew point.
The compressor will be enabled if it lies above this value by the
hysteresis set in parameter „HYST. FLOW TEMP.“.
 COLL. CUT-OFF TEMP
The collector is blocked for heat transfer if the collector temperature rises above the set „COLL. CUT-OFF TEMP“. It is not enabled
again until it falls back below the collector protection temperature.
The collector protection temperature must be lower than the collector cut-off temperature.
… SOLAR THERMAL
 COLLECTOR PROTECTION
Option
 SOLAR HYSTERESIS
 COLLECTOR TEMP LIMIT
 COLL. PROTECT TEMP
 COLL. CUT-OFF TEMP
 COLLECTOR PROTECTION
 PRIORITY SOLAR
 COOLING TIME
 COOLING TIME START
 COOLING TIME END
See chapter „Collector protection temperature“.
 PRIORITY SOLAR
OFF | ON
SOLAR | COOLING | COOLING TIME
 SOLAR HYSTERESIS
„SOLAR HYSTERESIS“ in combination with „TEMP. DIFFERENTIAL“
serves as a threshold for starting and stopping the solar circuit
pump. Most systems work well with a hysteresis value of 1 K. For
system with very long line lengths, a higher value can be entered
here.
With parameter „PRIORITY SOLAR“ you can select the priority for
the cooling mode if a solar thermal system is connected. Possible
settings are „SOLAR“, „COOLING“ and the time-controlled setting
via „COOLING TIME“. This programs the cooling period.
Option
SOLAR
Cooling is not enabled for as long as the solar starting conditions
THERMAL are met and the maximum system temperatures (max. DHW and
max. heating circuit) have not been reached.
COOLING The "solar overheating" function and collector protection are
deactivated. The solar start conditions are checked as soon as
cooling ends.
COOLING The "solar overheating" function and collector protection function
TIME
are deactivated under a time control. There is a specific parameter
for the cooling time, which can be used to adjust it (see chapter
"Cooling time").
„Solar overheating“ function
If there is no heat demand and, at the same time, the cylinder
temperature is lower than the temperature set in the „DHW SOLAR
TEMP.“ parameter, the appliance checks whether the collector
temperature is higher than the cylinder temperature by the sum
of the differential temperature and hysteresis. If so, the DHW pump
and the solar circuit pump are started.
 COOLING TIME
With parameter „COOLING TIME“ you can select the period for
which collector protection is to be disabled. Cooling time will only
be considered if the value „COOLING TIME“ is set in parameter
„PRIORITY SOLAR“.
In parameters „Start“ and „End“ set the required times.
 COLLECTOR TEMP LIMIT
To protect the heating circuit, the solar circuit pump modulates its
operation when the collector temperature exceeds the value set
under parameter „COLLECTOR TEMP LIMIT“.
… SCREED DRYING PROG.
!
Material losses
Never ventilate when dust is being generated in the
house, for example when cutting tiles or sawing plasterboard.
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COMMISSIONING‌| ‌NOTIFICATION LIST
Settings
If an underfloor heating system is installed, you can activate
screed drying with the „SCREED DRYING PROG.“ (see menu „Settings“). Here, you can specify a temperature curve as provided by
the screed contractor for gently drying the screed. The program is
started by setting the „START“ parameter to „ON“. The appliance
heats until the „LOW END TEMPERATURE“ has nearly been reached
(max. deviation 5 °C).
After that, the low end temperature is constantly maintained for
the number of days set under „TEMP. RISE PERIOD“. The set temperature is then increased by the value set under „GRADIENT“,
given in Kelvin per day (K/d).
… COMMISSIONING
 PROGRAMMING UNIT
 TOUCH SENSITIVITY
This parameter enables you to select the touch sensitivity of the
scroll wheel. Example: You can reduce the sensitivity if large fingers are used or firm pressure. For this, increase the value of the
parameter.
 TOUCH ACCELERATION
Dry heating (screed drying) program curve
Faster circular motions increase the step magnitude when changing parameters. With the „TOUCH ACCELERATION“ parameter you
can determine at what speed of rotation the step changeover occurs.
6
 TERMINAL ADDRESS
3
4
2
X
Y
1
2
3
4
5
6
7
1
Time
Temperature
„START“
„LOW END TEMPERATURE“
„TEMP. RISE PERIOD“
„GRADIENT“ [K/d]
„HIGH END TEMPERATURE“
„MAX HUT TIME“
End
7
D0000039378
5
If the terminal addresses were not assigned, there would be conflicts in communication between the appliance and the programming units, as every programming unit is given the same standard
value for the terminal address parameter.
The internal programming unit has terminal address 4 as standard. Programming units to be used for capturing the room temperature and relative humidity must be given terminal address 1 or 2.
When this temperature has been reached, the set temperature
is increased further. When the high end temperature set under
the „HIGH END TEMPERATURE“ parameter has been reached, the
temperature will be held constant for the time set under „MAX HUT
TIME“. The temperature is then reduced to the low end temperature in the same steps. The screed drying program is completed
when „OFF“ is displayed under the „START“ parameter.
If the screed drying program is interrupted by a power failure or
the appliance being switched off, the dry heating program continues when the appliance is switched back on. If the screed drying
program is to be cancelled, set the „START“ parameter to „OFF“.
Drying out can take a long time, as the heat pump output is insufficient for this purpose. If necessary, also switch on the booster stages. Always expect a considerably higher energy demand
during drying out.
The dual mode point is not taken into consideration during drying
out. The booster stages are always enabled when the controller
detects a deviation above the hysteresis.
If no work is being carried out that generates dust, you can start
ventilation during drying out, to extract humidity efficiently. This
can result in condensate escaping from the appliance. Condensate
will stop escaping when more regular operating conditions are
restored.
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Up to four programming units can be connected to the appliance.
However, this includes the programming unit built in at the factory
and the Internet Service Gateway that can be connected as an accessory. If more than one programming unit has been connected
to the appliance, assign each one an individual, unique „TERMINAL
ADDRESS“ in the „COMMISSIONING“ menu.
 HC ROOM T DETECTOR
If the programming unit is integrated directly in the appliance,
this parameter does not appear.
If a second programming unit is connected, after being enabled
during commissioning, the system prompts for the assignment of
a heating circuit. Select „HC1“ to assign the programming unit to
heating circuit 1 or „HC2“ accordingly. If you select „NONE“, the
actual room temperature will not be taken into account when
controlling the appliance, and the programming unit will work
only as a remote control.
 CONTROLLER
 RESET CONTROLLER
If you set this parameter to the value „ON“, the appliance will be
reset. Your own customised settings will not be overwritten by
the standard values.
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Settings
 FACTORY SETTING
If you give this parameter the value „ON“, then all parameters
will be reset to their factory settings. All changes made will be
lost. Even the appliance type will need to be re-entered under the
„APPLIANCE TYPE“ parameter. The delivered condition only loads
the default values; it does not reset any component.
 APPLIANCE TYPE
You can set the appliance type here.
Note
Changing the "APPLIANCE TYPE" parameter can result in
incorrect functioning of the appliance; it must therefore
be changed only by our service department. Therefore
this parameter can only be adjusted after entering the
customer service code.
The appliance type must be re-entered after the delivered condition has been reinstated or after a new PCB has been fitted.
„CONTRACTOR
„
… ENTER CODE
When the numerical contractor code is entered here, all contractor parameters of the appliance become freely accessible. At the
factory, the „CODE“ is set to 1000.
If the customer service code is entered at this point, further parameters reserved for service department become accessible.
Note
If there is no operating action after a certain period of
time, the control disables access to the protected parameters. In that case you will need to enter the contractor
code again.
… FAULT SEARCH
 FAULT LIST
The appliance records the faults that have occurred in a circular
memory. The programming unit shows the ten most recent entries
in the fault memory. If one fault occurs several times, it will only
be recorded in the fault list on its first occurrence.
 DELETE FAULT MEMORY
If you set the option „ON“ in this parameter, the fault list is cleared.
 STOP EVENT
All actual values and switching states of the appliance are recorded in a circular memory. With „STOP EVENT“, the recording
stops and it may be possible to draw conclusions from it as to the
cause of the fault.
… SWITCH ON MANUALLY
Here, you can switch appliance components or functions on manually. To do so, you have to enter the customer service code.
Parameter
 CONTROL VALVE HTG
 CONTROL VALVE DHW
 SOLAR PUMP
 MIXER PUMP
 MIXER OPEN
 MIXER CLOSE
 DIVERTER VALVE
 COMPRESSOR
 BOOSTER STAGE 1
 BOOSTER STAGE 2
 BOOSTER STAGE 3
 EXTR. AIR FAN SPEED
 SUPPLY AIR FAN SPEED
 WINDOW OPEN
 CONTACT COOLING
 2ND DHW CYLINDER
 OIL SUMP HEATING
Activating this parameter sets the speed to
100 %.
Activating this parameter sets the speed to
100 %.
With this parameter, you activate the relay
contact X18/3.
… EVAPORATOR
 DEFROST END TEMP.
The evaporator stops defrosting if this temperature is reached
during the defrosting process. Never change this value.
 MAX DEFROST DUR.
Evaporator defrost is terminated after the time set here has expired, and the appliance returns to its original operating state. If
the evaporator has not yet been defrosted, the defrosting process
is re-initiated. This process is repeated until the upper evaporator
temperature limit is reached or exceeded. If defrost is terminated
through the maximum defrost time 10 times in a row, a fault (F17)
is displayed.
 BOOSTER REFR. GUARD
If, during the defrosting process, the condenser temperature falls
below the limit value defined under „BOOSTER REFR. GUARD“,
the electric emergency/booster heater is switched on to stop the
heating water cooling down any further.
 DEFROST STOP
If the condenser temperature still continues to drop after the electric booster heater has been switched on, there is a risk that the
condenser may freeze up. In this case, the defrosting process will
be terminated when the temperature defined under the „DEFROST
STOP“ parameter is reached.
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Settings
… REFRIGERATION UNIT
 MIXER P. TYPE
Set the type of control characteristic for the external heating circuit
pump connected to the mixer PWM output.
 COMPRESSOR CYCLING
Here, you define the delay before the compressor switches back
on. To limit the compressor to three start cycles per hour, a value of
20 minutes is preset. This time counts from when the compressor
starts. For example, the compressor can run for 15 minutes, and
start again after 5 minutes downtime.
 EXHAUST AIR SPEED
This parameter enables you to set the speed of the exhaust air fans
as a percentage of the maximum speed. To ensure efficient heat
pump operation, the exhaust air fan should always be set to the
standard value detailed in the parameter overview.
Type of control
characteristic
Type 0 (PWM signal At the minimum pump control percentage, the pump oplogic 1)
erates at full output. At higher pump control percentages,
the output of the pump decreases.
Type 1 (PWM signal At the minimum pump control percentage, the pump
logic 2)
operates at zero output. At higher pump control percentages, the output of the pump increases.
Type 2
From a particular threshold value, the pump speed increases in direct linear proportion to the voltage applied
to the pump.
 SOLAR P. TYPE
Set the type of control characteristic of the pump connected to the
solar PWM output. For pump types, see „MIXER P. TYPE“.
 STARTING CURR. LIMTR
With the parameter „STARTING CURR. LIMTR“ you can limit the
starting current.
… PUMP CYCLES
 MINIMUM CYCLES
 MAXIMUM CYCLES
 OUTSIDE TEMP MIN CYC
 OUTSIDE TEMP MAX CYC
… VENTILATION
 FAN
Note
If you replace a fan, please note that the extract air fan
and the supply air fan must be the same fan type.
Option Fan type
0
EBM
… PUMPS
 PUMP SPEED DHW
This parameter enables you to set the speed of the internal circulation pump during DHW heating.
 PUMP SPEED HEATING
Determine here how many times each day the heating circuit pump
starts. Under „OUTSIDE TEMP MIN CYC“, you define the outside
temperature above which the pump starts as often as is set under
„MINIMUM CYCLES“. Accordingly, „OUTSIDE TEMP MAX CYC“ determines the temperature below which the pump starts as often
as set under „MAXIMUM CYCLES“.
Example: In factory settings, if the outside temperature is above
20 °C („OUTSIDE TEMP MIN CYC“) the pump runs once a day („MINIMUM CYCLES“); below 19 °C („OUTSIDE TEMP MAX CYC“) 288
times a day for five minutes at a time (288*5/60=24 hours). This
means that below 19 °C, the pump is constantly on; above 20 °C,
the pump starts once a day so it does not seize up during the
summer. The appliance interpolates between the temperatures
„OUTSIDE TEMP MIN CYC“ and „OUTSIDE TEMP MAX CYC“. At
19.5 °C the circulation pump starts 144 times each day.
With the aid of „PUMP CYCLES“, you can set the pump not to start
during the compressor blocking time (20 min) in winter.
Set the following values:
This parameter enables you to set the speed of the internal circulation pump during room heating.
 MIXER/HEATING RATIO
With this parameter, you set the speed ratio between the internal
circulation pump and the high efficiency mixer pump connected
to the mixer PWM output.
MAXIMUM CYCLES
OUTSIDE TEMP MAX CYC
°C
50
0
Below 0 °C, the pump therefore starts no more than 50 times a
day. This prevents the electric emergency/booster heater being
started while the compressor is blocked, although the compressor
output should still be sufficient.
 MIXER P. RUN-ON
This parameter enables you to set the pump run-on for the mixer
pump after the internal circulation pump is switched off. This
assists in draining any buffer cylinder that may be present.
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COMMISSIONING‌| ‌NOTIFICATION LIST
Settings
Note
In summer mode and in exclusive DHW mode, the "OUTSIDE TEMP MIN CYC" parameter will not be taken into
account. The circulation pump runs as often as set in the
"MINIMUM CYCLES" parameter. If the outside temperature
falls below 4 °C, the circulation pump runs in DHW mode
as often as set in the "MAXIMUM CYCLES" parameter.
In manual mode, the circulation pump runs as often as
set in parameter "MAXIMUM CYCLES".
In cooling mode the pump runs under room temperature-dependent control.
… EMERGENCY MODE AUTO
When this parameter is activated, emergency mode will be activated if the compressor is disabled as a result of a fault.
… POWER-OFF
With the „POWER-OFF“ parameter the effect of the power input on
the blocking of individual heat sources can be selected.
Option
0
1
2
3
4
5
No blocking
The heat pump is blocked. The electric emergency/booster heater is
blocked above the dual mode point for heating. After restarting, the
electric emergency/booster heater remains blocked for a certain
time. For this purpose, a restart time is set in the "COMPRESSOR
CYCLING" parameter. The electric emergency/booster heater for
DHW heating is started after the saved delay time stored in the
"Booster timeout" parameter has expired.
The heat pump is blocked. The electric emergency/booster heater
is enabled for DHW heating after a delay time of 10 minutes has
elapsed. The electric emergency/booster heater is blocked above
the dual mode point for heating.
The heat pump is blocked. The electric emergency/booster heater is
enabled for DHW heating and heating after a delay time of 10 minutes has elapsed.
The electric emergency/booster heater is blocked.
Electric emergency/booster heater and heat pump are blocked.
 COMP N SET VAL UNLTD
 COMPR. N SET VAL LTD
… PROCESS STATUS
These values are used for analysis in the event of a fault.
 HP SWITCH
 MOTOR PROTECTION
 DEFROST SIGNAL
 COMPRESSOR
 DHC 1
 DHC 2
 DHC 3
 DEFROST VALVE
 FAN
 COOLING
 POWER-OFF
 STOVE / FIREPLACE
OFF / ON
OFF / ON
OFF / ON
OFF / ON
OFF / ON
OFF / ON
OFF / ON
OFF / ON
OFF / ON
OFF / ON
OFF / ON
OFF / ON
… ANALYSIS
In the „ANALYSIS“ submenu actual values are displayed that may
be useful to the service department when troubleshooting.
 CURRENT MODE IWS
 CURRENT MODE EVE
 SUPERHTG EVAP. SET
 SUPERHTG EVAP ACTUAL
 SUPERHTG RECUP. ACT.
 CYCLING REL.
 DYNAMIC FACTOR
 P FACTOR
 I FACTOR
 D FACTOR
 OPENING EXV PRE-CTRL
 OPENING EXV
 OPENING EXV COOLING
 ACTUAL HTG/COOL OUTPUT
… INVERTER
These values are used for analysis in the event of a fault.
… PROCESS VALUES
These values are used for analysis in the event of a fault.
 FAN (PRC)
 OUTSIDE TEMPERATURE
 EVAP. OUTLET TEMP.
 HOT GAS TEMPERATURE
 FLOW TEMPERATURE
 CONDENSER TEMP.
 RETURN TEMPERATURE
 COOLING TEMP.
 HIGH PRESSURE
 LOW PRESSURE
 LP FILTERED
 POSITION VALVE
 PWM SOLAR PUMP
 PWM HTG CIRCUIT PUMP
 PWM MIXER PUMP
 HTG OUTPUT RELATIVE
 COMPRSSR SET OUTPUT
 COMPRESSOR SPEED
 MOTOR CURRENT
 MOTOR POWER
 MOTOR VOLTAGE
 INVERTER TEMPERATURE
 INVERTER FAULT
Compressor speed transferred from the inverter
Motor current transferred from the inverter
Motor power transferred from the inverter
Motor voltage transferred from the inverter
Temperature of IGBTs, transferred from the
inverter
The last fault number transferred from the
inverter
Estimated relative heating output determined from the pre-control curve
Calculated output setting for the compressor in heating and cooling mode
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COMMISSIONING‌| ‌NOTIFICATION LIST
Settings
3.2
Economy settings
3.2.5 Summer mode
The appliance has been set up at the factory to give priority to
providing heating and DHW conveniently under all circumstances. In doing this, it may occur that more energy than required is
used. The following describes a range of measures you can take to
reduce energy consumption with only small sacrifices to comfort.
Note
Please note that the energy demand of a new building
can be significantly higher in the first two years (drying
out) than the calculated energy demand.
3.2.1 DHW temperature
If the DHW temperature for day mode is set above 45 °C, the heat
pump may not be able to complete DHW heating under some circumstances. In this case, the electric emergency/booster heater
is also started, so the required DHW temperature of up to 55 °C
is reached.
To avoid this, you can use the „DHW ECO“ function. If the set DHW
temperature is not reached with the heat pump alone, the set DHW
value is adjusted automatically so the electric emergency/booster
heater will not be required.
ff
Set „DHW ECO“ to „ON“.
3.2.2 Pasteurisation
To protect against the growth of legionella bacteria, the contents
of the DHW cylinder are heated at adjustable intervals to the temperature selected under the „PASTEURISATION TEMP.“ parameter
(“SETTINGS / DHW / STANDARD SETTING).
When heating DHW in detached houses check whether this function may possibly be omitted. In such cases, the „PASTEURISATION
TEMP.“ parameter can be set to 10 °C. This value is preset.
There is a risk of legionella bacteria growth if only little DHW is
used. Legionella bacteria are generally only a danger to people
with weakened immune systems.
3.2.3 Heating curve
Adjust the heating curve carefully, as the heat pump efficiency
will be reduced with an increasing flow temperature. See chapter
„Operation / MAIN MENU / Settings / Heating“ in the operating
instructions.
3.2.4 Electric booster in heating mode
If it is correctly sized, the heat pump should cover the heat demand
by itself, down to an outside temperature of approx. -5 °C, if the
DHW demand is not excessive. The electric emergency/booster
heater starts subject to output. However, it may occur that the
electric emergency/booster heater starts even though the heating
output of the heat pump would still be sufficient. To prevent this,
the dual mode point, above which the electric emergency/booster
heater is blocked, should be set to -5 °C. The factory setting is 0 °C.
„„
SETTINGS
… HEATING
 STANDARD SETTING
 SUMMER MODE
 HYST. SUMMER MODE
Example
°C
K
20
2
Conditions
Outside temperature‌≥ ‌SUMMER MODE‌+ ‌Hyst. summer Heating blocked
MODE‌/‌2
Outside temperature‌≤ ‌SUMMER MODE‌- ‌HYST. SUMMER Heating enabled
MODE‌/‌2
Sample application: At an outside temperature above 21 °C, heating stops; heating restarts if the outside temperature drops below
19 °C. This significantly reduces the heating runtime.
Note
One condition for the cooling function is that summer
mode has been activated.
3.2.6 Pump cycles
In the „CONTRACTOR“ menu under „PUMP CYCLES“, you can set
how many times a day the heating circuit pump starts. With the
aid of pump cycles, in winter you can set the pump not to start
while the compressor is blocked (20 min). For this purpose, set
„MAXIMUM CYCLES“ to 50 and „OUTSIDE TEMP MAX CYC“ to 0 °C.
Below 0 °C, the pump starts no more than 50 times a day.
This stops the electric booster heater being started while the compressor is blocked, although the compressor output should still
be sufficient.
In summer, the pump should start only once a day while the temperature is above the summer/winter changeover temperature
(„SUMMER MODE“ parameter). For this, „OUTSIDE TEMP MIN CYC“
must be set to the total of the values „SUMMER MODE“ and „HYST.
SUMMER MODE“.
Note
For solar DHW heating, set the values listed under the
description with "DHW SOLAR TEMP." for these pump
cycle parameters.
Note
Feedback from the rooms is only available when the heating circuit pump runs, making this a condition for the
recognition of a heat demand.
Note
On account of the moisture contained in building materials, new buildings have a higher heat demand than will
be the case one or two years later. It may therefore be
required to set a higher dual mode point.
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COMMISSIONING‌| ‌NOTIFICATION LIST
Troubleshooting
4.
Troubleshooting
4.1
Notification list
Note
If the appliance blocks the compressor in the event of a fault, the electric emergency/booster heater only starts immediately
for heating and DHW if automatic emergency mode is on.
If automatic emergency mode is not on, the electric emergency/booster heater only starts once the time set in parameter
"Booster timeout" has elapsed. The "Heating" and "DHW" menus each have their own "Booster timeout" parameter.
For heating without automatic emergency mode, the dual mode temperature must also be undershot so that the electric
emergency/booster heater will start following expiry of the time set in parameter "Booster timeout".
If a fault occurs which causes the appliance to switch off the heat pump, you can activate "Emergency mode". The emergency/
booster heater then ensures the functioning of the heating system and DHW heating.
Fault
01 Anode
Unit response
02 The high limit
safety cut-out has
tripped
The electric emergency/booster
heater has overheated and was
therefore stopped by the high limit
safety cut-out.
Cause
Remedy
The anode has either been consumed or the Notify your qualified contractor.
connection cable is faulty.
The external filter on the return is contam- Clean the filter.
inated.
The pump has seized.
The flow rate through the heat pump is too
low, for example if the thermostatic valves
on all the radiators or the zone valves in the
underfloor heating system are closed.
03 High pressure
switch
04 Low pressure
switch
05 Extract air fan
06 Supply air fan
Ensure its function or replace the pump.
If you add the flow rate to "Favourites", you can easily
monitor it. If all valves are closed, this indicates that a
heating curve has been set too high. Match the heating
curve in accordance with the description in chapter
"Heating/Heating curve".
This fault may also occur if the power supply Ensure that the power-OFF contact has been connectutility shuts down the electric emergency/ ed correctly. Set parameter "POWER-OFF" in accordbooster heater during a power-OFF period ance with the specification issued by the power supply
and the parameter "POWER-OFF" has been utility (see chapter "Settings / Contractor level / Powset incorrectly.
er-OFF"). Press the electronics reset button.
Press the high limit safety cut-out reset button. Press
the electronics reset button. Notify customer support if
the fault repeats.
The high pressure switch has reThe external filter on the return is contam- Clean the filter.
sponded five times in five hours. The inated.
heat pump will shut down.
The pump has seized.
Ensure its function or replace the pump.
The flow rate through the heat pump is too If you add the flow rate to "Favourites", you can easily
low, for example if the thermostatic valves monitor it. If all valves are closed, this indicates that a
on all the radiators or the zone valves in the heating curve has been set too high. Match the heating
underfloor heating system are closed.
curve in accordance with the description in chapter
"Heating/Heating curve".
Isolate the appliance across all poles from the mains
power for three minutes. Notify customer support if
the fault repeats.
The low pressure switch has reThe exhaust air fan is faulty. Fault 07 should
sponded five times in five hours. The then also be in the fault list.
heat pump will shut down.
Fault in defrost detector.
Remove the defrost hose (see chapter "Maintenance
and cleaning / Cleaning the evaporator") and check
whether it has iced up. Then push the hose on again to
the same length.
Heat pump intake or discharge is blocked. Check and clean if required
Press the electronics reset button. Notify customer
support if the fault repeats.
The fan speed is not correct. The fan The fans are protected by a fuse against
Isolate the appliance across all poles from the mains
will be blocked.
excess current. If one of these fuses has
power for approx. one minute. If the fan repeatedly
blown, the fan is blocked until it has been fails to start, inform customer support.
isolated from the power supply.
The fan speed is not correct. The fan The fans are protected by a fuse against
Isolate the appliance across all poles from the mains
will be blocked.
excess current. If one of these fuses has
power for approx. one minute. If the fan repeatedly
blown, the fan is blocked until it has been fails to start, inform customer support.
isolated from the power supply.
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COMMISSIONING‌| ‌NOTIFICATION LIST
Troubleshooting
Fault
07 Exhaust air fan
Unit response
The fan speed is not correct. The fan
will be blocked. The heat pump will
be locked out.
08 Max hot gas
The max. hot gas temperature of
120 °C was exceeded. The compressor was shut down for safety
reasons.
The "Min. superheating" limiter has
responded five times in five hours.
The heat pump will shut down.
09 EVE min.
10 Flow max
11 Low pressure
sensor
12 High pressure
sensor
13 EVE refrigerant
shortage
Cause
Remedy
The fans are protected by a fuse against
Isolate the appliance across all poles from the mains
excess current. If one of these fuses has
power for approx. one minute. If the fan repeatedly
blown, the fan is blocked until it has been fails to start, inform customer support.
isolated from the power supply.
This fault may also occur if the power supply Ensure that the power-OFF contact has been connectutility shuts down the heat pump during a ed correctly. Set parameter "POWER-OFF" in accordpower-OFF period and parameter "POWance with the specification issued by the power supply
ER-OFF" has been set incorrectly.
utility (see chapter "Settings / Contractor level / Power-OFF"). Press the electronics reset button.
Press the electronics reset button. If this faults occurs
repeatedly, notify customer support.
The low pressure sensor does not
Cause may be the low pressure sensor fault.
deliver a plausible signal (< 2 mA
longer than 10 s).
The high pressure sensor does not Likely cause is the high pressure sensor
deliver a plausible signal (< 2 mA
fault.
longer than 10 s). The heat pump will
be blocked in cooling mode.
The "Refrigerant shortage" limiter
has triggered five times in five hours.
The heat pump will shut down.
14 EVE Ex valve will
not close
15 DHW temperature DHW heating has developed a fault
if the set DHW temperature in the
cylinder has not been reached after
the defined time (see "Maximum duration DHW heating"). DHW heating
is blocked until 22:00 h and then restarted. If the set DHW temperature
is not reached again, DHW heating
is blocked until 22:00 h the following
day.
Notify the service department.
Also check the sensor lead. Notify customer support if
the fault repeats.
Also check the sensor lead. Notify customer support if
the fault repeats.
Press the electronics reset button. If this faults occurs
repeatedly, notify customer support.
Notify the service department.
The electric emergency/booster heater
stages for DHW operation are not enabled
or are blocked by the high limit safety cutout. It may then no longer be possible to
reach the required DHW temperature at
DHW temperatures above 50 °C and high
outside temperatures. This can happen even
if a pasteurisation temperature above 50 °C
is entered.
Check whether the high limit safety cut-out for the
emergency/booster heater stages has responded (see
fault 02). Reset the high limit safety cut-out, if necessary. If the high limit safety cut-out had responded, the
flow rate was probably too low (see fault 03). Starting
"DHW ECO" may provide a remedy.
The DHW diverter valve does not work.
Multiple attempts by adjusting the set DHW temperature to 10 °C and 50 °C.
The maximum flow temperature for DHW
mode ("MAX FLOW TEMP DHW") is set too
low.
16 EVE no output
17 Defrost time exceeded
18
19
20
21
22
23
Notify customer support if the fault repeats.
Press the electronics reset button. If this faults occurs
repeatedly, notify customer support.
Press the electronics reset button. If this faults occurs
repeatedly, notify customer support.
The evaporator is not defrosted within the defined period. If the fault has
occurred ten times in succession, the
heat pump is blocked.
Pressure sensor,
The heating circuit pressure sensor is
heating circuit
not providing a plausible signal.
Defrost duration
Defrosting is not completed after
of cross-counter- expiry of the defined time. The fault
current heat exis displayed until the defrost process
changer
has been completed.
Solar sensor
The solar circuit pump is not being The measured sensor values have been con- Check whether the solar sensor is connected or, if no
switched.
stantly outside the permissible range for a solar thermal system is connected, whether parameter
specified period.
"SOLAR ACTIVATION" is set to "OFF".
Press the electronics reset button for one second. If
this faults occurs repeatedly, notify customer support.
Outside tempera- The heating system runs constantly The measured sensor values have been con- Press the electronics reset button for one second. If
ture sensor
with the flow temperature for man- stantly outside the permissible range for a this faults occurs repeatedly, notify customer support.
ual mode.
specified period.
Hot gas tempera- The compressor is switched off at
The measured sensor values have been con- Press the electronics reset button for one second. If
ture sensor
outside temperatures < -10 °C and
stantly outside the permissible range for a this faults occurs repeatedly, notify customer support.
condenser temperatures > 40 °C.
specified period.
Condenser temper- The compressor is stopped.
The measured sensor values have been con- Press the electronics reset button for one second. If
ature sensor
stantly outside the permissible range for a this faults occurs repeatedly, notify customer support.
specified period.
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COMMISSIONING‌| ‌NOTIFICATION LIST
Troubleshooting
Fault
Unit response
24 Evaporator temper- The compressor is stopped.
ature sensor
Cause
The measured sensor values have been constantly outside the permissible range for a
specified period.
25 Compressor inlet Cooling mode will be blocked.
The measured sensor values have been contemperature
stantly outside the permissible range for a
specified period.
26 Return temperThe heating system switches over to The measured sensor values have been conature sensor in
heating mode subject to flow tem- stantly outside the permissible range for a
heating circuit
perature. The amount of solar heat specified period.
cannot be calculated.
27 Evaporator output The heating mode heat pump evapo- The measured sensor values have been contemperature
rator control is blocked.
stantly outside the permissible range for a
specified period.
28 Flow temperature The heating system switches over
The measured sensor values have been consensor in heating to heating mode subject to return
stantly outside the permissible range for a
circuit
temperature. The electric emergen- specified period.
cy/booster heater output cannot be
calculated.
29 DHW temperature DHW heating is blocked.
The measured sensor values have been consensor
stantly outside the permissible range for a
specified period.
30 Software version
31
32
33
35
37
40
42
43
44
45
46
47
48
50
51
Remedy
Press the electronics reset button for one second. If
this faults occurs repeatedly, notify customer support.
Press the electronics reset button for one second. If
this faults occurs repeatedly, notify customer support.
Press the electronics reset button for one second. If
this faults occurs repeatedly, notify customer support.
Press the electronics reset button for one second. If
this faults occurs repeatedly, notify customer support.
Press the electronics reset button for one second. If
this faults occurs repeatedly, notify customer support.
Press the electronics reset button for one second. If
this faults occurs repeatedly, notify customer support.
Press the electronics reset button. If this faults occurs
repeatedly, notify customer support. The software version does not match the hardware version.
RAM
Press the electronics reset button. If this faults occurs
repeatedly, notify customer support. Replace the control unit.
EEProm
Press the electronics reset button. If this faults occurs
repeatedly, notify customer support. Replace the control unit.
Extract air humidiThe actual values captured by a humidity
Press the electronics reset button. If this faults occurs
ty sensor
sensor are continuously outside the permis- repeatedly, notify customer support.
sible range for a defined period.
Min. flow, cooling The inlet pressure of the refrigerant
Select a higher pump speed.
lies below the threshold value during cooling. The heat pump will be
locked out. If the temperature rises,
the compressor will start after an
idle period.
Min. water pres- The overpressure is less than
This fault may occur following venting or
Top up with water.
sure
0.05 MPa (0.5 bar). At the same time, due to leaks.
the minimum flow rate has not been
achieved. The electric emergency/
booster heater will be blocked.
Float switch, bot- The heat pump and the ventilation
The cause is the defrost pan overflowing or Check for leaks. Check the float switch is working
tom panel
are switched off.
leaks in the heating or DHW circuit of the
correctly.
appliance. This fault may reset automatically.
Excess temperaThe Klixon has tripped.
ture, compressor
Low pressure too The compressor is switched off for
low
several minutes.
Low pressure too The compressor is switched off for
high
several minutes.
Low pressure not The compressor is switched off for
assigned
several minutes.
High pressure too The compressor is switched off for
low
several minutes.
High pressure too The compressor is switched off for
high
several minutes.
High pressure not The compressor is switched off for
assigned
several minutes.
Sensor on heat
Control of the appliance continues
The measured sensor values have been out- Press the electronics reset button for one second. If
pump return
despite this fault. The amount of
side the permissible range for a specified
this faults occurs repeatedly, notify customer support.
solar heat and compressor heat can- period.
Replace the sensor.
not be calculated.
Sensor on heat
Control of the appliance continues
The measured sensor values have been out- Press the electronics reset button for one second. If
pump flow
despite this fault. The amount of
side the permissible range for a specified
this faults occurs repeatedly, notify customer support.
compressor heat and the output of period.
Replace the sensor.
the electric emergency/booster heater cannot be calculated.
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COMMISSIONING‌| ‌NOTIFICATION LIST
Troubleshooting
Fault
52 Sensor on condenser outlet
Unit response
Control of the appliance continues
despite this fault.
53 Extract air temperature sensor
54 Integral temperature sensor
55 Temperature sensor at the top of the
cylinder
56 Sensor in the second DHW cylinder
Cause
The measured sensor values have been outside the permissible range for a specified
period.
Switch parameter to "OFF".
Switch parameter to "OFF".
The sensor is faulty.
The fault can occur if the parameter "2ND
DHW CYLINDER" is wrongly enabled.
57 Sensor to measure
the oil sump temperature
58 Differential pres- The appliance only defrosts under
sure sensor
time control or when triggered by
the low pressure sensor. The appliance continues to run.
60 Inverter fault
Remedy
Press the electronics reset button for one second. If
this faults occurs repeatedly, notify customer support.
Replace the sensor.
Replace the sensor.
If there is a second cylinder installed, replace the
sensor.
Check the parameter.
Replace the sensor.
The differential pressure switch has capNotify the service department.
tured a value outside the permissible range.
The differential pressure sensor measures
the differential pressure across the evaporator. The differential pressure switch is
responsible for defrost recognition.
You can call up the fault numbers in the programming
unit menu.
Note
Faults 43 to 48 are triggered by Safety Operation Area
(SOA) intrusion. The SOA limits the speed of the compressor in certain operating ranges in order to safeguard
service life and ensure efficient operation.
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Deutschland
STIEBEL ELTRON GmbH & Co. KG
Dr.-Stiebel-Straße 33 | 37603 Holzminden
Tel. 05531 702-0 | Fax 05531 702-480
info@stiebel-eltron.de
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STIEBEL ELTRON SAS
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B.P 85107 | 57073 Metz-Cédex 3
Tel. 0387 7438-88 | Fax 0387 7468-26
info@stiebel-eltron.fr
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Hlavná 1 | 058 01 Poprad
Tel. 052 7127-125 | Fax 052 7127-148
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STIEBEL ELTRON Ges.m.b.H.
Gewerbegebiet Neubau-Nord
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Tel. 07221 74600-0 | Fax 07221 74600-42
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STIEBEL ELTRON AG
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Gass 8 | 5242 Lupfig
Tel. 056 4640-500 | Fax 056 4640-501
info@stiebel-eltron.ch
www.stiebel-eltron.ch
Belgium
Japan
Thailand
STIEBEL ELTRON bvba/sprl
't Hofveld 6 - D1 | 1702 Groot-Bijgaarden
Tel. 02 42322-22 | Fax 02 42322-12
info@stiebel-eltron.be
www.stiebel-eltron.be
China
STIEBEL ELTRON (Tianjin) Electric Appliance
Co., Ltd.
Plant C3, XEDA International Industry City
Xiqing Economic Development Area
300085 Tianjin
Tel. 022 8396 2077 | Fax 022 8396 2075
info@stiebeleltron.cn
www.stiebeleltron.cn
Czech Republic
STIEBEL ELTRON spol. s r.o.
K Hájům 946 | 155 00 Praha 5 - Stodůlky
Tel. 251116-111 | Fax 235512-122
info@stiebel-eltron.cz
www.stiebel-eltron.cz
Finland
STIEBEL ELTRON OY
Kapinakuja 1 | 04600 Mäntsälä
Tel. 020 720-9988
info@stiebel-eltron.fi
www.stiebel-eltron.fi
4<AMHCMO=dijbgd>
NIHON STIEBEL Co. Ltd.
Kowa Kawasaki Nishiguchi Building 8F
66-2 Horikawa-Cho
Saiwai-Ku | 212-0013 Kawasaki
Tel. 044 540-3200 | Fax 044 540-3210
info@nihonstiebel.co.jp
www.nihonstiebel.co.jp
Netherlands
STIEBEL ELTRON Asia Ltd.
469 Moo 2 Tambol Klong-Jik
Amphur Bangpa-In | 13160 Ayutthaya
Tel. 035 220088 | Fax 035 221188
info@stiebeleltronasia.com
www.stiebeleltronasia.com
United Kingdom and Ireland
STIEBEL ELTRON Nederland B.V.
Daviottenweg 36 | 5222 BH 's-Hertogenbosch
Tel. 073 623-0000 | Fax 073 623-1141
info@stiebel-eltron.nl
www.stiebel-eltron.nl
STIEBEL ELTRON UK Ltd.
Unit 12 Stadium Court
Stadium Road | CH62 3RP Bromborough
Tel. 0151 346-2300 | Fax 0151 334-2913
info@stiebel-eltron.co.uk
www.stiebel-eltron.co.uk
Poland
United States of America
STIEBEL ELTRON Polska Sp. z O.O.
ul. Działkowa 2 | 02-234 Warszawa
Tel. 022 60920-30 | Fax 022 60920-29
biuro@stiebel-eltron.pl
www.stiebel-eltron.pl
STIEBEL ELTRON, Inc.
17 West Street | 01088 West Hatfield MA
Tel. 0413 247-3380 | Fax 0413 247-3369
info@stiebel-eltron-usa.com
www.stiebel-eltron-usa.com
Russia
STIEBEL ELTRON LLC RUSSIA
Urzhumskaya street 4,
building 2 | 129343 Moscow
Tel. 0495 7753889 | Fax 0495 7753887
info@stiebel-eltron.ru
www.stiebel-eltron.ru
Irrtum und technische Änderungen vorbehalten! | Subject to errors and technical changes! | Sous réserve
d‘erreurs et de modifications techniques! | Onder voorbehoud van vergissingen en technische wijzigingen! |
Salvo error o modificación técnica! | Excepto erro ou alteração técnica | Zastrzeżone zmiany techniczne i
ewentualne błędy | Omyly a technické změny jsou vyhrazeny! | A muszaki változtatások és tévedések jogát
fenntartjuk! | Отсутствие ошибок не гарантируется. Возможны технические изменения. | Chyby a
technické zmeny sú vyhradené!
Stand 9375
A 338916-41117-9437
B 337705-40913-9373
STIEBEL ELTRON Australia Pty. Ltd.
6 Prohasky Street | Port Melbourne VIC 3207
Tel. 03 9645-1833 | Fax 03 9645-4366
info@stiebel.com.au
www.stiebel.com.au
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