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

Stiebel Eltron LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart Operation Operation Instruction
OPERATION
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 | Special information

SPECIAL INFORMATION
OPERATION
1.
1.1
1.2
1.3
General information�����������������������������������������3
Safety instructions����������������������������������������������� 3
Other symbols in this documentation����������������������� 3
Units of measurement������������������������������������������ 3
2.
2.1
2.2
2.3
Safety����������������������������������������������������������3
Intended use������������������������������������������������������ 3
General safety instructions������������������������������������ 3
Test symbols������������������������������������������������������ 4
3.
Appliance description���������������������������������������4
4.
4.1
4.2
4.3
4.4
4.5
„„
„„
…
…
„„
…
…
…
…
…
„„
…
…
…
…
…
…
…
…
…
Operation�����������������������������������������������������4
Controls������������������������������������������������������������ 4
Operating modes������������������������������������������������ 6
Favourites, quick access, function block�������������������� 7
Entering parameters�������������������������������������������� 7
Main menu�������������������������������������������������������� 8
INFO���������������������������������������������������������������� 8
DIAGNOSIS�������������������������������������������������������� 8
SYSTEM STATUS�������������������������������������������������� 8
FAULT LIST��������������������������������������������������������� 8
PROGRAMS������������������������������������������������������� 8
HEATING PROGRAM��������������������������������������������� 8
DHW PROGRAM�������������������������������������������������� 9
FAN PROGRAM��������������������������������������������������� 9
HOLIDAY PROGRAM��������������������������������������������� 9
PARTY PROGRAM������������������������������������������������ 9
SETTINGS��������������������������������������������������������� 10
HEATING���������������������������������������������������������� 10
DHW��������������������������������������������������������������� 12
VENTILATION���������������������������������������������������� 12
COOLING���������������������������������������������������������� 12
SOLAR THERMAL������������������������������������������������ 13
SCREED DRYING PROG.���������������������������������������� 14
COMMISSIONING������������������������������������������������ 14
TIME / DATE������������������������������������������������������ 14
CONTRACTOR���������������������������������������������������� 14
5.
5.1
Cleaning, care and maintenance������������������������� 15
Replacing supply air and extract air filters���������������� 15
6.
6.1
6.2
6.3
Troubleshooting�������������������������������������������� 16
Filter symbols appear������������������������������������������ 16
No hot water����������������������������������������������������� 16
The safety valve of the cold water supply line is
dripping���������������������������������������������������������� 16
The fault symbol appears������������������������������������� 16
The appliance leaks water������������������������������������ 16
Condensate on the outside of the appliance or on the
air hoses���������������������������������������������������������� 16
Noise is emitted������������������������������������������������� 16
The required flow temperatures are not reached,
particularly during drying out������������������������������� 17
The accommodation is always too cold�������������������� 17
The accommodation is always too hot��������������������� 17
The accommodation is too cold in winter����������������� 17
6.4
6.5
6.6
6.7
6.8
6.9
6.10
6.11
6.12
6.13
6.14
6.15
6.16
6.17
The accommodation is too hot in winter������������������� 17
The accommodation is too cold in spring and autumn� 17
The accommodation is too hot in spring and autumn �� 17
The accommodation is too hot in summer���������������� 17
Air quality is too poor������������������������������������������ 17
The air in winter is too dry����������������������������������� 17
7.
Menu structure��������������������������������������������� 18
GUARANTEE
ENVIRONMENT AND RECYCLING
SPECIAL INFORMATION
-- The appliance may be used by children aged 8
and older and persons with reduced physical,
sensory or mental capabilities or a lack of experience and know-how, provided that they are
supervised or they have been instructed on how
to use the appliance safely and have understood
the potential risks. Children must never play with
the appliance. Children must never clean the appliance or perform user maintenance unless they
are supervised.
2 | LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart
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Operation
General information
OPERATION
1.
ff
This symbol indicates that you have to do something. The action you need to take is described step by step.
 These symbols show you the software menu level (in
this example level 3).
General information
This manual is intended for the appliance user and qualified contractors.
Note
Read these instructions carefully before using the appliance and retain them for future reference.
Pass on the instructions to a new user if required.
1.1
Safety instructions
1.1.1 Structure of safety instructions
1.1.2 Symbols, type of risk
Type of risk
Injury
Electrocution
Burns
(burns, scalding)
1.1.3 Keywords
KEYWORD
DANGER
WARNING
CAUTION
1.2
Meaning
Failure to observe this information will result in serious
injury or death.
Failure to observe this information may result in serious
injury or death.
Failure to observe this information may result in non-serious or minor injury.
Other symbols in this documentation
Note
Notes are bordered by horizontal lines above and below
the text. General information is identified by the adjacent
symbol.
ff
Read these texts carefully.
Symbol
Meaning
Material losses
(appliance damage, consequential losses and environmental pollution)
Appliance disposal
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Units of measurement
Note
All measurements are given in mm unless stated otherwise.
2.
Safety
2.1
Intended use
The appliance is a complete system with the following functions:
KEYWORD Type of risk
Here, possible consequences are listed that may result
from failure to observe the safety instructions.
ff
Steps to prevent the risk are listed.
Symbol
1.3
Centralised ventilation
with heat recovery
Central DHW provision
DHW cylinder integrated
into the appliance
Connection of an external
DHW cylinder
Heating
Cooling
Connection of thermal
solar collectors
LWZ 8 CS Pre- LWZ 5 S LWZ 8 S
LWZ 5 S
mium‌/ ‌LWZ 5 Plus
Trend‌ / ‌LWZ Smart
CS Premium
5 S Trend
x
x
x
x
x
x
x
x
-
x
x
x
-
x
-
x
x
x
x
-
x
-
x
-
The appliance is intended for domestic use. It can be used safely
by untrained persons. The appliance can also be used in non-domestic environments, e.g. in small businesses, as long as it is used
in the same way. Any other use beyond that described shall be
deemed inappropriate. Observation of these instructions is also
part of the correct use of this appliance.
2.2
General safety instructions
The appliance should only be operated once it is fully installed
and all safety equipment has been fitted.
WARNING Electrocution
Never splash the appliance with water or other liquids.
WARNING Burns
There is a risk of scalding at outlet temperatures in excess of 43 °C.
WARNING Injury
The discharged cold air can cause condensation to be
formed in the vicinity of the air discharge.
ff
Ensure that no risk of slipping due to wet conditions
or ice formation occurs on adjacent footpaths and
driveways at low temperatures.
LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart | 3
Operation
Appliance description
WARNING Injury
The appliance may be used by children over 8 years of
age and persons with reduced physical, sensory or mental capabilities or a lack of experience and expertise,
provided that they are supervised or they have been
instructed on how to use the appliance safely and have
understood the potential risks. Children must never play
with the appliance. Children must never clean the appliance or perform user maintenance unless they are
supervised.
Note
Do not change any system-specific settings at the control unit. Your qualified contractor has set the control
unit to match the local conditions for your building and
your individual requirements. The system-specific parameters are protected by a code to prevent unintentional
modifications.
The parameters that serve to adapt the appliance to your
personal requirements are not protected by a code.
Appliances with ventilation function
WARNING Injury
If there is a radio or police announcement ordering windows and doors to be kept closed, simply select fan stage
"0" (= fan off) for several hours.
The programming unit must be activated if the appliance
has been out of operation for a long time:
ff
Hold down "MENU" button for three seconds.
ff
If you have already navigated through the menu
tree, pressing MENU will return you to the default
display. If necessary you may have to press menu
several times.
ff
Slide your finger along the scroll wheel until you
reach the "VENTILATION STAGES" entry.
ff
Press "OK".
ff
Press "OK" again to adjust the "Unscheduled vent."
parameter.
ff
Set the "UNSCHEDULED VENT." parameter to 0 by sliding your finger anti-clockwise over the scroll wheel.
ff
Confirm with "OK".
ff
Set the "UNSCHED. VENT TIME STAGE 0" parameter
to a suitable value.
Never adjust the setting of supply and extract air valves inside the
rooms. These have been adjusted during commissioning.
2.3
Test symbols
See type plate on the appliance.
3.
Appliance description
When there is a heat demand, outdoor air is channelled through
the evaporator and its energy extracted. This energy is boosted
to a higher temperature level by means of the heat pump, to heat
the DHW and the heating system.
vated for emergency heating if the temperature reading falls below
the standard outside temperature, set as the dual mode point.
This ensures heating operation and the provision of high DHW
temperatures. In mono energetic mode, the electric emergency/
booster heater is activated as a booster heater.
The appliance is controlled by a weather-compensated control
unit.
Appliances with ventilation function
Heat is recovered from the extract air via a highly efficient
cross-countercurrent heat exchanger. The cooled air is discharged
outdoors as exhaust air.
Appliances with solar heat exchanger
An additional heat exchanger is included in the common return to
the heat pump. The thermal solar collectors connected can back
up both DHW heating and room heating. A differential temperature controller for the solar thermal system is integrated in the
appliance control unit.
A heat exchanger built into the outdoor air flow heats the outdoor
air for domestic ventilation. If sufficient solar heat is available, the
outside air is preheated indirectly by solar energy.
Appliances with cooling function
The refrigeration unit of the heat pump may be reversed. In cooling mode, heat can then be extracted from the heating circuit
and transferred to the outdoor air.
Inverter
The compressor in the appliance has an electronic speed controller. The compressor adjusts its output to the cooling/heating
demand. If the current room temperature is far from the set temperature, the provision of cooling/heating output for the room
will be accordingly high. If the temperature differential decreases,
the appliance reacts to the change in requirements and provides
a lower cooling or heating output. This results in advantages of
economy and convenience when compared with appliances without inverter technology, where the compressor either runs at
maximum output or is off.
Heat metering
The appliance is equipped with an integral heat meter. In the
„INFO“ menu, the supplied amounts of heat are displayed.
4.
Operation
4.1
Controls
The programming unit enables you to change parameters and
to obtain information on the appliance operation. The appliance
can also be controlled when no programming unit is connected
or the connected one is faulty. The programming unit comprises
the scroll wheel, two keys and above these a display.
When the temperature is very low, or when there is a very high
heat demand, the appliance covers the residual heat demand by
means of an integral electric emergency/booster heater. With a
mono mode design, the electric emergency/booster heater is acti4 | LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart
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Operation
Operation
4.1.1 Display
2
3
WEDNESDAY‌ 10. ‌SEPT‌ 14
OUTSIDE TEMPERATURE
DHW TEMPERATURE
FLOW TEMPERATURE
10:23‌ TIME
27.0‌ °C
35.0‌ °C
28.0‌ °C
Service:
A service is required. Please contact your qualified contractor.
26_04_01_0292
1
Switching program enabled:
If a switching program is enabled, this symbol is displayed.
DAY MODE
4
1 Date and time
2 Favourites When you are in the menu, the favourites display is no longer shown.
3 Operating mode‌,‌Quick link‌, ‌Function block
4 Appliance status symbols
You can adjust the contrast of the display and select the language
of the display texts in the „COMMISSIONING“ menu.
4.1.2 Picture symbols on the display
At the lower edge of the display, symbols provide information
about the current appliance operating status. Up to eight symbols
can be displayed at once.
Ventilation stage:
For a limited period the appliance operates with a modified ventilation stage.
Heating circuit pump:
The pump symbol is displayed when a heating circuit
pump is running.
Heat-up:
This symbol shows when the dry heating (screed drying)
program runs.
Power-OFF:
This symbol lights up if the appliance has no enable signal
from the power supply utility.
4.1.3 Scroll wheel
Filter change, top:
The extract air filter is contaminated. Please change the
extract air filter.
Filter change, top and bottom:
The filter change service intervals of the extract air and
the supply air filters have expired or the filters have become contaminated prematurely. Please change the extract
air and supply air filters.
D0000064710
Filter change, bottom:
The supply air filter is contaminated. Please change the
supply air filter.
The scroll wheel consists of a touch-sensitive sensor. There is a
key to the left and another to the right of it.
Electric emergency/booster heater:
The electric emergency/booster heater has started up.
This occurs, for example, when the outside temperature
has fallen below the dual mode point.
Note
If you have gloves on, have wet hands or the programming unit is damp, this impedes the recognition of your
touch and the execution of the action you require.
Cooling:
The cooling symbol is displayed when the appliance is
in heating mode.
In the „COMMISSIONING“ menu, your qualified contractor can set
the touch sensitivity using the „TOUCH SENSITIVITY“ parameter.
Heating:
The heating symbol is displayed when the appliance is
in heating mode.
Activation
DHW heating:
This symbol tells you that the appliance is heating DHW.
Compressor:
The compressor symbol signals that the compressor is running.
Evaporator defrost:
The evaporator is defrosting.
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The user interface is blocked to protect the appliance from accidental incorrect adjustments.
ff
Touch the menu button for 3 seconds to enable the user
interface.
If the scroll wheel and keys are not used for 20 minutes, the programming unit is locked again. With the function block, you can
block the user interface for 60 seconds.
Once the programming unit is activated, you have two adjustment
options:
-- You can select operating modes with the scroll wheel.
-- You can press „MENU“ to continue navigating from there to a
specific appliance parameter.
LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart | 5
Operation
Operation
Selection indicator
4.2
As you move through the menu and parameter levels, the selection
indicator shows your current position. Either a dark background
appears or the current list entry is highlighted by two lines, one
above and one below.
When the start screen is activated, the current operating mode
is displayed. If you want to select another operating mode, scroll
with the scroll wheel.
If you brush a finger clockwise along the recessed scroll wheel,
the highlighting field moves through the list of parameters either
to the right, or downwards if the parameters are arranged vertically. With an anti-clockwise rotation, the highlighter moves to
the left or upwards.
Alongside navigation within the menu structure, the scroll wheel is
also used to set parameters. If you make a clockwise rotation, the
value is raised. With a circular movement anti-clockwise, values
are reduced.
Faster circular motions increase the step magnitude when changing parameters. Your qualified contractor can determine at what
speed of rotation the step magnitude changes, in the „COMMISSIONING“ menu using the „TOUCH ACCELERATION“ parameter.
4.1.4 Menu key
If you are on the default screen, press „MENU“ to enter the second
level of the menu structure. There, you have access to the appliance setting options, such as the input of switching time programs.
If you are not in the highest menu level, tap the menu key to go
back one level.
Note
In the following sections of this document, the abbreviation "MENU" means you should touch the MENU key.
WEDNESDAY‌ 10. ‌SEPT ‌14
10:23‌ TIME
OUTSIDE TEMPERATURE 14.0‌ °C
DHW TEMPERATURE
35.0‌ °C
ROOM TEMPERATURE
18.0‌ °C
DAY MODE
26_04_01_0292
Circular movement
Operating modes
„„
Operating modes
… STANDBY
… AUTOMATIC
… DAY MODE
… SETBACK MODE
… DHW MODE
… MANUAL MODE
… EMERGENCY MODE
At the end of this selection list, further setting options are available:
… FAVOURITES
… VENTILATION STAGES
… HOTTER / COLDER
… FUNCTION BLOCK
4.2.1 STANDBY
Note
Tap the keys only briefly to initiate the required action.
If you touch the menu and OK keys for too long, the programming unit will not respond.
In standby mode, the appliance delivers the set standby values.
Generally, you will switch the appliance into minimum operation
with standby mode. The appliance runs in standby mode until
another operating mode is enabled.
4.1.5 OK button
4.2.2 AUTOMATIC
With one touch of the OK key, you confirm the selection of the
menu entry highlighted. This brings you into the menu tree on the
next menu level. If you are already at the parameter level, „OK“
saves the currently set parameter.
In automatic mode, the time programs set for central heating,
DHW and ventilation are implemented. Automatic mode is the
standard appliance setting. The heating flow temperature is regulated according to a weather-compensated heating curve. The
appliance runs in setback mode if no time programs are enabled.
4.2.3 DAY MODE
In day mode (generally while occupants are present in the house,
during the day), the heating system operates with the selected set
day values. Day mode does not influence DHW heating or ventilation.
4.2.4 SETBACK MODE
The appliance activity is reduced in setback mode, for example
at night time, or during the day when nobody is at home. In setback mode, the heating system is operated with the selected set
night values. Setback mode does not influence DHW heating or
ventilation.
6 | LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart
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Operation
Operation
4.2.5 DHW MODE
4.3.4 FUNCTION BLOCK
DHW mode is enabled in accordance with the set time programs.
For the current pair of switching times, the DHW set day value
is delivered. The central heating is switched off except for frost
protection. DHW operation does not influence ventilation.
If you select the „FUNCTION BLOCK“ function, the programming
unit will be blocked for 60 seconds. During this time, you can
clean the programming unit without accidentally changing the
appliance settings. A counter appears on the screen that shows
the remaining blocking time in seconds.
4.2.6 MANUAL MODE
If manual mode is enabled, the set values selected for manual
mode are delivered. In manual mode, the heating flow temperature is not influenced by the outside temperature.
4.2.7 EMERGENCY MODE
4.4
Entering parameters
Parameters are changed by scrolling with the scroll wheel. To
save the new value, touch „OK“. If you want to cancel the entry,
press „MENU“.
Note
If more than five minutes pass without any user activity,
rotation or tapping of "MENU" or "OK", the programming unit display automatically jumps back to the default
screen. Recent parameter changes not yet been confirmed with "OK" will be lost. The parameters retain the
values previously saved.
If emergency mode is enabled, the „Compressor“ heating stage is
skipped. Heating is provided by the solar thermal system (if connected) or the electric emergency/booster heater. The dual mode
point is not taken into consideration. Using the electric emergency/
booster heater on its own for long periods means high energy
costs. If you activate emergency mode, the set room temperatures
from automatic mode are used. The switching programs from
automatic mode are also used.
Example‌ 1
4.3.1 FAVOURITES
Up to three parameters are constantly shown on the display when
the appliance is in operation. To select your favourites, navigate
to the required parameter. If the square at the end of the line is
not filled in, this parameter is not yet one of your favourites. Press
„OK“ to change this. However, you can only select three favourites.
You may therefore have to disable one of your current favourites.
Press „OK“ to disable.
To enter set temperatures, a number surrounded by a circle appears on the display. This indicates that you can change the value
by turning the scroll wheel.
MAIN HEATING
MENUROOM TEMPERATURES
ROOM TEMPERATURE
HC1DAY
HC
+
21.7
4.3.2 Ventilation stages
°C
ROOM TEMPERATURE DAY
26_04_01_0347
Favourites, quick access, function block
-
VENTILATION STAGES
UNSCHEDULED VENT.
02
Example‌ 2
26_04_01_0367
UNSCHED. VENT TIME STAGE 2
Under „UNSCHEDULED VENT.“ enter the required value (0 to 3).
This setting is valid for a limited time, which you set in the neighbouring menu item, e.g. „UNSCHED. VENT TIME STAGE 0“. If
you do not set a time, the appliance adopts the saved parameter
values.
4.3.3 HOTTER / COLDER
Here, you can change the set room temperatures for the heating
circuits and thereby raise or lower the heating curves.
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To set holiday dates, a calendar page for the selected month appears.
HOLS
BEGINNING
Settings
HOLIDAY
HOLIDAY
PROGRAM-PARTY
PROGRAM
MO TUE WED THU FRI SAT SUN
02
09
16
23
30
DAY
03
10
17
24
04
11
18
25
05
12
19
26
06
13
20
27
MONTH YEAR HOUR
07
14
21
28
01
08
15
22
29
MINUTE
26_04_01_0300
4.3
Turning the scroll wheel displays the highlighter that you can then
move to the required date.
LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart | 7
Operation
Operation
„„
DIAGNOSIS
Example‌ 3
Some parameters are selected via highlighted boxes. The positions
where the box is highlighted, i.e. coloured in black, are active. One
example is setting up favourites. With „OK“ you can highlight the
box, or remove it if the item was already highlighted. For favourites, up to three highlighted list entries can be selected in this way.
… SYSTEM STATUS
 POWER-OFF
MAIN MENU
INFO ROOM TEMPERATURE
 STOVE / FIREPLACE
 AIR HEAT EXCH. DEFR.
 EVAPORATOR DEFROST
ROOM TEMPERATURE HC1
SET ROOM TEMPERATURE HC1
ROOM TEMPERATURE HC2
… FAULT LIST
26_04_01_0298
The fault memory contains the ten most recent fault messages. The
display, however, can show only six fault messages at a time. Turn
the scroll wheel to access the other entries in the fault memory.
„„
PROGRAMS
4.4.1 Contractor access
To prevent incorrect adjustments, some appliance parameters may
only be changed by qualified contractors. These parameters are
protected and can only be changed after entering a code.
If automatic mode is set, this is where you define the time programs that control the appliance.
… HEATING PROGRAM
BOOSTER
TIMEOUT
MAINSETTINGS
MENU
DHWSTANDARD
SETTING
ENTER CODE
4.5
26_04_01_0293
0 * * *
 HEATING CIRCUIT 1 | HEATING CIRCUIT 2
You can set individual heating programs for heating circuits 1
and 2. This determines when and how often the appliance should
operate in day mode. At all other times, the appliance operates in
setback mode. You can select the set values for day and setback
mode under the menu item „ROOM TEMPERATURES“.
First, select the days on which you want to enable the heating
function:
MAIN PROGRAMS
MENUHEATING
HEATING
CIRCUIT
PROGRAM
HC 1
Main menu
Note
Some menu items are protected by a code and can only
be accessed and adjusted by a qualified contractor.
+
MO
MAIN MENU
MONDAY
-
26_04_01_0301
SET ROOM TEMPERATURE HC2
34.2‌ °C
POWER-OFF indicates whether voltage is present at the power supply utility input. If voltage
is present, the power supply utility has not
disabled any component of the appliance.
DIAGNOSIS
PROGRAMS
SETTINGS
CONTRACTOR
26_04_01_0294
INFO
„„
INFO
In the „INFO“ menu, actual values are displayed. See the chapter
„Menu structure“ for a list of these.
-----
on individual days („MONDAY“, ... , „SUNDAY“)
from Monday to Friday („MON - FRI“)
on Saturday and Sunday („SAT - SUN“)
throughout the whole week („MON - SUN“)
Monday is initially offered.
ff
Select the day or a group of days.
ff
Confirm your selection with „OK“.
You can now set three switching time pairs. The three switching
time pairs are shown on the display, to the right of the clock. A
switching time pair comprises the start time and end point, at
which the appliance returns to its previous state.
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Operation
Operation
… DHW PROGRAM
MAIN PROGRAMS
MENUHEATING
HEATING
CIRCUIT
PROGRAM
HC 1
Here, you can set the periods when DHW is heated with reference
to the set day temperatures. In the other phases, the set night
temperatures are followed. You can select the set values for day
and night mode as described in the DHW chapter.
MONDAY
07:00 - 20:00
- - -:- - - -:- -
26_04_01_0299
- -:- - -:- -
In this example, only one switching time pair has so far been
programmed. For switching time pairs 2 and 3, short dashes are
displayed instead of times. These switching time pairs are still
empty. Select one of the free switching time pairs with „OK“ to
reach the area where you can set the associated start and end
time. Pressing „OK“ brings up the display shown below. Set the
required time.
Example: You want to heat up DHW daily at two different times, i.e.
from 22:00 to 05:00 h the following day, and then again from 08:00
to 11:00 h. Since the day begins at 00:00 h, begin programming
at 00:00 h. The first pair of switching times runs from 00:00 to
05:00 h. The second pair of switching times starts at 08:00 h and
ends at 11:00 h. The third switching time pair runs from 22:00 to
24:00 h.
The pairs of switching times should be selected so that the DHW
cylinder can be completely heated up between the start and stop
times (at least 3 hours).
… FAN PROGRAM
The setting is made as for the central heating and DHW programs.
MAIN PROGRAMS
MENUHEATING
SETTINGS
PROGRAM HC
… HOLIDAY PROGRAM
TIME
START
- -:- END
TIME
26_04_01_0302
- -:- -
Times can be entered in intervals of 15 minutes. Confirm your
entry with OK.
Periods around midnight
Assume, for example, you want heating mode to be enabled from
22:00 h for four hours every Wednesday evening. However, since
the day ends at 00:00 h, two switching time pairs are necessary for
the required program. First, program the period 22:00 to 00:00 h
for Wednesday, then 00:00 to 02:00 h for Thursday.
During the holidays, if nobody is in the house, central heating,
DHW and ventilation are not required in their full scope. All set
temperatures are set to match the set values of the standby function. Define the first and last days of the holiday. At the end of the
holiday, the appliance runs according to the set programs again.
 HOLS BEGINNING
 DAY
 MONTH
 YEAR
 HOUR
 MINUTE
 HOLIDAYS ENDING
 DAY
 MONTH
 YEAR
 HOUR
 MINUTE
Deleting a switching times pair
Select the pair of switching times you want to delete. Go to the
start time change. Turn the scroll wheel to reduce the time. If you
reach 00:00 and continue to make a rotation, the pair of switching
times is removed. The previously shown display appears, i.e. dashes instead of numbers. Confirm again with OK.
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… PARTY PROGRAM
Under this parameter you can extend day mode for several hours.
Enter the start and end time of your party. Times can be set that
go beyond the end of the day the party starts.
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Operation
Operation
… HEATING
Two heating circuits can be operated with this appliance, e.g. one
direct heating circuit for radiator heating system and one heating
circuit with mixer for underfloor heating system.
Enter the „ROOM TEMPERATURES HC1“ submenu for settings applicable to the first heating circuit.
Standard values to begin with:
Parameter
Underfloor
heating
 GRADIENT
0.4
 LOW END
K3
 ROOM TEMPERATURE DAY °C 20
1
 ROOM TEMPERATURES HC1
 ROOM TEMPERATURE DAY HC1
 ROOM TEMP. NIGHT HC1
 ROOM TEMP. STANDBY HC1
 MANUAL SET HC1
 ROOM TEMPERATURE HC1
2
3
∆Y
∆X
4
5
Select the required set room temperature for day, setback and
standby modes.
MANUAL SET HC‌:‌Under this parameter, set the heating flow temperature for manual mode.
ROOM TEMPERATURE‌: ‌This parameter, the display of the current
value, is only shown if a room temperature sensor is connected.
 ROOM TEMPERATURES HC2
See chapter „ROOM TEMPERATURES HC1“. Set the values in this
submenu accordingly.
 HEATING CURVE HC1
 GRADIENT HC1
 LOW END HC1
 ROOM INFLUENCE HC1
 FLOW PROPORTION HC1
 MAX. SET VALUE HC1
 MIN. SET VALUE HC1
 HEATING CURVE HC1
The room temperature will only remain constant irrespective of
the outside temperature if the correct heating curve has been
selected for the relevant type of building. Selecting the correct
heating curve is therefore vitally important. The more precisely
the heating curve is set, the more economically the appliance
works. Try therefore to optimise your heating curve. Reduce the
current heating curve until the flow temperature is just sufficient
for heating. The target is as flat a heating curve as possible.
ff
Fully open thermostatic valves (remove head) in a lead room,
for example living room or bathroom.
ff
At different outside temperatures, adjust the heating curve so
the required temperature is set in the lead room (living room
or bathroom). Now the room temperature in these rooms is
controlled with the heating curve (see next diagram).
Radiator heating
system
0.8
10
20
D0000051930
„„
SETTINGS
X Outside temperature [°C]
Y Heating circuit temperature sensor [°C]
1 Gradient influence
Gradient = ΔY/ΔX
= Heating circuit temperature change/Outside temperature
change
2 Low end offset influence
3 Heating curve
4 Set room temperature influence
5 Low end
 GRADIENT
With the „GRADIENT“ parameter, you can set the extent to which
a change in the outside temperature causes a rise in the flow temperature. Typical problem: Increase the gradient if the room temperature is too low at low outside temperatures (approx. -10 °C).
 LOW END
By changing the „LOW END“ parameter, you cause a parallel offset
of the heating curve. Typical applications are explained in the
chapter „Troubleshooting“.
 ROOM INFLUENCE
If you want to influence the heating curve through the room temperature, install an auxiliary „FES Comfort“ programming unit in
your home. As the underfloor heating system has a delayed effect
on the room temperature, this can be counteracted via additional
heating such as solar irradiation or a fireplace. You must enter a
value > 0 for the „ROOM INFLUENCE“ parameter.
Set heating circuit temperature = set heating circuit temperature
from heating curve + ((set room temperature - actual room temperature) * room influence * gradient / 10)
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Operation
Operation
Example‌ 1
Flow means the pipework that supplies hot water to the heating
system. The return carries the cooled water from the heating system to the heating system. With the „FLOW PROPORTION“ parameter you determine whether your heating system should function
as a flow or return temperature-controlled system.
Setting
0
30
50
80
100
Control
Return temperature control
Flow temperature control
Flow‌ [%]
0
30
50
80
100
Heating curve‌ 55‌/‌40‌, ‌Radiator heating system
Set room temperature
Low end
Gradient
Flow proportion
Design temperature
Return‌ [%]
100
70
50
20
0
60
50
40
You should normally set values below 50 (we recommend 30) for
heating circuit 1, to restrict the influence of the flow temperature.
Particularly in spring and autumn, the flow temperature is subject
to naturally strong fluctuations because of the heat pump being
switched on and off. If these strong fluctuations make it necessary,
the booster stages would also be started, although the heat pump
alone would be capable of covering the current heat demand.
No flow proportion is scanned for heating circuit 2. Always enter
100 here, as the mixer circuit does not have its own return sensor.
 MIN. SET VALUE / MAX. SET VALUE
30
°C
°C
20
5
0.65
30
-15
%
°C
1
2
3
20
10
0
X
Y
1
2
3
-15
-10
-5
0
5
10
15
20
26_04_01_0379
 FLOW PROPORTION
Outside temperature [°C]
Heating temperature [°C]
Flow
Heating curve
Return
Example‌ 2
With these parameters, you set the minimum and maximum set
temperatures for the heating circuit. These values limit the heating curve in the upper and lower regions. Even if the calculated
heating curve would go beyond these limits, it is limited to these
set values.
Heating curve‌ 35‌/‌28‌, ‌Underfloor heating
Set room temperature
Low end
Gradient
Flow proportion
Design temperature
°C
°C
20
1
0.3
30
-15
%
°C
Under this parameter, you can display the heating curves for both
heating circuits.
40
1
35
2
30
25 3
20
15
10
5
0
-15
-10
HEATING
CURVE
MAIN HEATING
MENU
HEATING
CURVE
HC1
HC TEMPERATURE °C
60
50
40
20
10
00
-25
TA
-20
-15
-10
-05
00
05
10
15
20
°C
25
26_04_01_0348
30
Note that parameter „FLOW PROPORTION“ has an influence on
heating curve „HC1“. This means the heating curve is distinctly
lower than the flow temperature curve. (see examples 1 and 2).
The heating curve for „HC2“ is a flow temperature curve.
X
Y
1
2
3
-5
0
5
10
15
20
26_04_01_0380
 HEATING CURVE
Outside temperature [°C]
Heating temperature [°C]
Flow
Heating curve
Return
If you have set the heating curve successfully, set the thermostatic
valves to the required temperature.
Note
Never reduce the temperature in the entire building by
closing all thermostatic valves. Instead, use the night
programs or select the set room temperature with the
"HOTTER / COLDER" parameter.
 STANDARD SETTING
These parameters are reserved for qualified contractors and are
described in the installation instructions.
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Operation
Operation
… DHW
 DHW TEMPERATURES
 DHW SET DAY
 DHW SET NIGHT
 DHW SET STANDBY
 DHW SET MANUAL
 DHW TEMPERATURE
Select the set DHW temperatures here. Enter the values for day,
setback, standby and manual modes. Subject to operating mode,
the temperature in the DHW cylinder is brought to the corresponding set value. The current water temperature in the cylinder is
shown under „DHW TEMPERATURE“.
 MIXED WATER AMOUNT
For this appliance, this menu displays no parameters other than
the actual value „MIXED WATER AMOUNT“. The amount of mixed
water indicated does not relate to any second DHW cylinder that
may be connected.
 STANDARD SETTING
These parameters are reserved for qualified contractors and are
described in the installation instructions.
… VENTILATION
Here, you can set the parameters for the centralised ventilation
of your home.
 VENTILATION STAGES
 DAY STAGE
 NIGHT STAGE
 STANDBY STAGE
 PARTY STAGE
 MANUAL STAGE
 VENTILATION TIMES
 UNSCHED. VENT TIME STAGE 0
 UNSCHED. VENT TIME STAGE 1
 UNSCHED. VENT TIME STAGE 2
 UNSCHED. VENT TIME STAGE 3
 VENTILATION STAGES
Stage
Ventilation 0
Necessary ventilation for ensuring that the building
for humidity
structure is protected under normal conditions of use
protection
with somewhat reduced moisture loads, e.g. during
temporary absence of users and no drying of washing in
the residential unit.
Reduced
1
Ventilation necessary to meet minimum hygiene stanventilation
dards and ensure protection of the building structure
(humidity) under normal conditions of use with partially
reduced humidity and pollutant loads, e.g. as a result of
intermittent user absence.
Standard
2
Ventilation necessary to meet hygiene standards and
ventilation
ensure protection of the building structure when users
are present (standard mode).
Intensive
3
Ventilation necessary from time to time, with a higher
ventilation
air flow rate to reduce load peaks. For intensive ventilation, it can be assumed that the user will assist (by
manually opening windows for a time).
 VENTILATION TIMES
Normally, the appliance controls when and for how long to ventilate. However, via the quick access option „VENTILATION STAGES“
you can run ventilation outside the normal schedule.
Under „UNSCHED. VENT TIME STAGE 1“ determine for how many
minutes the fan should run, if you set the appliance to stage 1 via
parameter „VENTILATION STAGES“. Specify the ventilation times
for stages 0, 2 and 3 accordingly.
The selected ventilation stage will not be enabled for 20 seconds.
Quick ventilation with external pushbutton
With an external pushbutton that can be installed on site, you
can set ventilation immediately to stage 3. Ventilation runs with
stage 3 and will only switch off after the time set in parameter
„UNSCHED. VENT TIME STAGE 3“.
Humidity protection ventilation (stage 0)
The control unit includes a humidity protection ventilation function. This is provided to protect against humidity damage, if ventilation is not required. This could be, for example, during prolonged absence due to holidays. For this, in the „VENTILATION /
PARAMETER“ menu, the humidity protection parameter must be
set to „ON“. The humidity protection ventilation is activated after
a pause of 24 hours. Ventilation is inactive prior to the expiry of
the 24 hour period.
Ventilation starts if the relative humidity inside the room exceeds
a limit whilst ventilation is switched off (stage 0). Ventilation is
switched off again if the limit is undershot by more than the selected hysteresis. The limit is dependent on the outside temperature.
ff
Please consult your qualified contractor.
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. This is made subject to the relative
humidity in the room. At low levels of relative humidity, such as
in winter, for example, the air flow rate will be reduced subject to
the output reduction parameter. This counteracts excessive drying
out. In summer, the humidity-dependent fan output correction can
reduce excessive humidity levels in rooms.
ff
Please consult your qualified contractor.
 SERVICE
„RUNTIME FILTER:“: This parameter indicates when the last filter
reset was carried out.
„RESET FILTER“: This parameter enables you to carry out a filter
reset by selecting „ON“.
… COOLING
The FES Comfort digital remote control is equipped with a temperature sensor as well as a humidity sensor that is used to monitor
the dew point in area heating systems (such as underfloor heating
systems, wall area heating systems, chilled ceilings).
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Operation
Operation
Active cooling
 COOLING MODE HC2
If the heating circuit temperature is greater than the set heating circuit temperature, and the „COOLING MODE“ parameter
is enabled, the compressor and defrost valve switch on and the
hydraulics are controlled externally. For cooling mode to function
via area heating systems, cooling thermostats and control valves
must be used and connected to the „Cool“ port in the appliance
control panel.
Cooling and DHW heating
Cooling mode is interrupted as soon as a DHW demand is issued,
and DHW heating commences.
Cooling and solar
Under parameter „SOLAR“ qualified contractors can use parameter „PRIORITY SOLAR“ to select the priority for cooling operation if
a solar thermal system is connected. Possible settings are „Priority
solar“, „Priority cooling“ and the time-controlled setting via „Priority cooling time“. This programs the period for cooling. If „Priority
solar“ has been selected, cooling will not be enabled for as long
as the solar starting conditions are met and the maximum system
temperatures have not been reached. With „Priority cooling“, the
solar overload function and collector protection are disabled. The
solar start conditions are checked as soon as cooling ends.
ff
Enable cooling mode for the required heating circuits by setting parameter „COOLING MODE“ („OFF“ / „ON“).
 ROOM TEMPERATURES HC1
 ROOM TEMPERATURE DAY HC1
 ROOM TEMP. NIGHT HC1
 ROOM TEMP. STANDBY HC1
 ROOM TEMPERATURE HC1
To allow the appliance to cool, you must set the „COOLING MODE“
parameter to the value „ON“. Refer to your qualified contractor for
the required adjustments.
Cooling is enabled when the appliance is in summer mode and the
outside temperature exceeds the set room temperature for heating
by 3 K for 2 hours. 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.
By selecting a set room temperature you can influence when the
appliance starts its cooling operation.
… SOLAR THERMAL
 SOLAR ACTIVATION
 TEMP. DIFFERENTIAL
 DHW COMPRESSOR DELAY
 DHW SOLAR TEMP.
OFF | ON
If you have connected a solar thermal system, you will find all the
parameters here which have to be specified for solar mode. In
solar mode, the appliance is backed up by the solar heat exchanger
for DHW heating and central heating.
 SOLAR ACTIVATION
If you want to enable solar mode, set the value in parameter
„SOLAR ACTIVATION“ to 1.
 TEMP. DIFFERENTIAL
With the aid of this parameter, also known as solar differential
temperature, you define a temperature that is used as the threshold for starting and stopping the solar circuit pump.
The solar circuit pump starts if the collector temperature is higher than the return temperature by the „TEMP. DIFFERENTIAL“ +
„SOLAR HYSTERESIS“. The solar circuit pump stops if the collector
temperature is only „TEMP. DIFFERENTIAL“ – „SOLAR HYSTERESIS“
above the return temperature. The parameter „SOLAR HYSTERESIS“ is set by the qualified contractor.
Ensure that the stop point is not below the return temperature.
That can be the case if the hysteresis has been set above the temperature differential. The greater the value of the solar differential
temperature, the later the solar circuit pump starts when the sun
comes out. At the same time, the risk of heat loss from the cylinder is reduced. If heat were lost from the cylinder, the thermal
energy would flow in the opposite direction, i.e. water that had
already been heated would be cooled down because insolation
was still too low.
 DHW COMPRESSOR DELAY
When the solar circuit pump runs, the compressor is blocked for
the period defined here. DHW is only heated with solar energy
during this time.
 DHW SOLAR TEMP.
If the DHW cylinder has been heated up, the set flow temperature
has been reached and the collector temperature remains high,
the DHW cylinder can be heated up to a higher temperature to
store solar energy.
 ROOM TEMPERATURES HC2
See chapter „ROOM TEMPERATURES HC1“.
Set the temperature to which the DHW cylinder should be heated
here.
 COOLING MODE HC1
 COOLING MODE HC1
 COOLING SYSTEM HC1
See chapter „COOLING MODE HC1“.
OFF | ON
AREA COOLING‌ |‌ FAN
COOLING
 HC TEMP. COOLING HC1
 HYST. ROOM TEMP. HC1
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Code-protected
Code-protected
Code-protected
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Operation
Operation
WARNING Burns
Parameter "DHW SOLAR TEMP." should only be set higher
than 60 °C if suitable measures have been taken to provide protection against scalding. There is a risk of scalding
at outlet temperatures in excess of 43 °C.
If you want to use the solar function, your qualified contractor
should set the following values:
MINIMUM CYCLES‌
MAXIMUM CYCLES‌
OUTSIDE TEMP MAX CYC‌
OUTSIDE TEMP MIN CYC‌
1
≥50
0
25
°C
°C
… SCREED DRYING PROG.
The dry heating (screed drying) program is not necessary for daily
requirements. The explanation can be found in the installation
instructions for qualified contractors.
 SOFTWARE VERSION
„SOFTWARE VERSION“ shows which software version is installed
on the control PCB. The software version indicates the appliance
type.
 SOFTWARE ID
„SOFTWARE ID“ shows the consecutive number of the software.
… TIME / DATE
 TIME / DATE
In the „TIME / DATE“ menu, enter the current time and date, so
the appliance can start the time programs you enter at the correct
time.
Position the selection indicator over the position „YEAR“ and confirm with „OK“. Set the current year and confirm with „OK“. Set
the month accordingly. To help you set the „Day“, a calendar page
appears. Move the highlighter to the required day. The new value
is saved when you confirm with „OK“.
… COMMISSIONING
 PROGRAMMING UNIT
 CONTROL UNIT SOFTWARE
 SUMMERTIME MANUAL
The programming unit‘s software version is displayed here.
Under the „SUMMERTIME MANUAL“ menu item, you can set the
period for summertime.
 CONTRAST
With the „CONTRAST“ parameter, you can set the contrast between
the characters shown on the display and the display background.
 BRIGHTNESS
 LANGUAGE
 SUMMERTIME AUTOMATIC
Instead of entering the time period for summer mode manually,
you can select the summertime specified at the factory. For this,
set the „SUMMERTIME AUTOMATIC“ menu item to „ON“.
… CONTRACTOR
Here you can select the language in which the display texts are
shown.
 ROOM TEMP CORRECTION
If the room temperature captured by the programming unit does
not correspond with the actual room temperature, for example if
the sensor is mounted on a cold external wall, you can make a correction at the appliance. In the parameter „ROOM TEMP CORRECTION“, enter the difference between the actual room temperature
and the room temperature displayed on the programming unit.
Example:
Actual temperature
Displayed temperature
New parameter value
 CONTROLLER
The parameters in the „CONTRACTOR“ menu have a great influence on the appliance control properties, and are therefore protected
with a password to prevent incorrect settings. As an appliance
user, you can see these parameters, but if you jump to the next
menu level, you meet the code check.
 FAULT SEARCH
If the appliance registers a fault, this is clearly displayed with the
message shown below.
WEDNESDAY‌ 10. ‌SEPT‌ 14
°C
°C
19
21
-2
!
16:27‌ TIME
FAULT
CODE NO. 001
PLS INFORM CUST SERVICE
If the relative humidity in the room as measured on the programming unit does not correspond to the real relative humidity
in the room, you can make a correction on the appliance. If the
value displayed by the programming unit is too low, increase the
value set under parameter „REL HUMIDITY CORRECTION“.
26_04_01_0303
 REL HUMIDITY CORRECTION
If more than one fault occurs, the most recent fault is always
shown. Please inform your qualified contractor.
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Operation
Cleaning, care and maintenance
To see the usual default display, first enable the programming
unit by pressing „MENU“ for 5 seconds. The fault message is then
extended with a note requesting that you acknowledge the fault
by pressing OK for five seconds.
 FAULT LIST
26_04_01_0545
The fault list contains the ten most recent fault messages. The
display, however, can show only six fault messages at a time. Scroll
with the scroll wheel to access the other entries in the fault list.
 PROCESS VALUES
These values are used for analysis in the event of a fault.
ff
Open the door carefully.
 PROCESS STATUS
These values are used for analysis in the event of a fault.
1
1.
2.
 ANALYSIS
3.
In the „ANALYSIS“ submenu actual values are displayed that may
be useful to the service department when troubleshooting.
2
 INVERTER
These values are used for analysis in the event of a fault.
Cleaning, care and maintenance
Note
Keep the air intake and discharge apertures on the exterior wall free from snow and leaves.
ff
Check the supply air and extract air filters regularly for
contamination.
5.1
Replacing supply air and extract air filters
Note
This chapter is only relevant for appliances with ventilation function.
ff
Hold down „MENU“ button for three seconds.
ff
If you have already navigated through the menu tree, pressing MENU will return you to the default display. If necessary
you may have to press menu several times.
ff
Use the scroll wheel to navigate to the „VENTILATION
STAGES“ entry.
ff
Press „OK“.
ff
Press „OK“ again to adjust the „Unscheduled vent.“
parameter.
ff
Set the „UNSCHEDULED VENT.“ parameter to 0.
ff
Confirm with OK.
ff
Set the „UNSCHED. VENT TIME STAGE 0“ parameter to a suitable value, e.g. 30 minutes.
26_04_01_0544
5.
4.
1 Extract air filter
2 Supply air filter
ff
Undo the r.h. knurled nut by turning it anti-clockwise.
ff
Undo the l.h. knurled nut by turning it anti-clockwise to enable the filter cover to be pivoted downwards.
ff
Pull out the filter cassette.
Note
Ensure that you do not interchange the extract air and
supply air filters when reinserting them into the appliance. The filter cassette of the extract air filter (upper filter)
features two grip holes at the front.
Note
Ensure that the direction of air flow through the filter is
correct.
A door lock is located above the door.
ff
Push the door lock at the front upwards.
ff
Pull the door lock backwards and then upwards to unhook
the door lock.
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LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart | 15
Operation
Troubleshooting
ISO Coarse ≥ 60 % (G4)
The more coarsely porous, blue
side is the air intake side of the
filter.
ePM10 ≥ 50 % (M5) / ePM1 ≥ 50 % (F7)
6.2
The direction of flow is indicated by an
arrow on the side of the filter.
Should you fail to obtain hot water, you can take the following
steps to remedy the situation yourself:
-- If the appliance has no power: Check the fuse/circuit breaker
in your fuse box. If it has blown/tripped, replace/reset the
fuse/MCB. Notify your qualified contractor if the fuse/MCB
blows/trips again.
-- If the appliance has power: Check whether the air intake/
discharge is blocked. Check whether a fault code is being
displayed, and if necessary, notify your qualified contractor.
Check whether the control unit is set correctly.
ff
Replace the filter.
ff
Push the new filter cassette into the appliance.
ff
Rotate the filter cover back into its original position and then
tighten the r.h. knurled nut clockwise.
ff
Tighten the l.h. knurled nut.
ff
At the programming unit, activate the „RESET FILTER“ parameter („SETTINGS / VENTILATION / SERVICE“).
WARNING Injury
All other work on the appliance must only be carried out
by qualified contractors.
Note
Have the cross-countercurrent heat exchanger, outdoor
air filter, evaporator and fans checked and (if required)
cleaned once a year by a qualified contractor.
Cleaning the extract and supply air vent filters
ff
If installed, clean the extract air vent filters through which air
is extracted from the rooms.
ff
If installed, clean the supply air vent filters through which air
is supplied to the rooms.
ff
Clean the filter box (if present) attached to the outdoor air
connector on the rear of the appliance.
6.
Troubleshooting
6.1
Filter symbols appear
The appliance is equipped with an automatic filter contamination
detector. The constant flow rate control of the fans results in an
increase in fan speed when the filters become contaminated. This
increase in speed is evaluated to display a filter change requirement.
When the filters are contaminated, the following symbols are displayed.
Filter change, top:
The extract air filter is contaminated. Please change the
extract air filter.
Filter change, bottom:
The supply air filter is contaminated. Please change the
supply air filter.
Filter change, top and bottom:
Extract air and supply air filters are contaminated or their
filter change intervals have expired. Please change the
extract air and supply air filters.
The filter symbol appears automatically after three months.
6.3
No hot water
The safety valve of the cold water supply line
is dripping
This may occur during the heat-up phase and is completely normal.
6.4
The fault symbol appears
Note
If this symbol appears, it means a fault has occurred.
Notify your qualified contractor or call customer service.
6.5
The appliance leaks water
If water escapes from the appliance, shut it down immediately and
notify your qualified contractor.
6.6
Condensate on the outside of the appliance or
on the air hoses
In the drying out phase or when relative humidity is high (>60 %),
it is normal for condensate to appear on the surface of the appliance and on the thermally insulated air hoses. This should stop
when the house has dried out thoroughly which, subject to the
design, can take up to 2 years. If the room is used to dry washing
however, condensate can still form.
ff
Check whether the air hoses are fitted correctly, and that no
cold air escapes.
6.7
Noise is emitted
Since the appliance moves very large volumes of air, it cannot
work silently.
However, there should not be any disturbing noises in the living
rooms and bedrooms. To achieve this, ensure that
-- the appliance has been installed correctly.
-- the installation room has a door that closes tightly.
-- adequately sized silencers are integrated directly on the appliance in the supply air and extract air ducts.
-- additional silencers are installed between bedrooms, nurseries and living rooms.
-- the air volumes have been adjusted and checked according to
the system design.
If you notice dragging noises when the fan or heat pump are in
operation, take the appliance out of use immediately and notify
your qualified contractor.
If dragging noises occur during heat pump operation, the exhaust
air fan may be the cause. During shipping, the fan may slightly
16 | LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart
www.stiebel-eltron.com
Operation
Troubleshooting
move in relation to the air nozzle. This may result in dragging
noises. If necessary, the exhaust air fan should be aligned as part
of the commissioning work.
6.8
The required flow temperatures are not
reached, particularly during drying out
When drying screed, output levels will be required that are far
above those necessary for standard heating operation. It can therefore take a relatively long time before, for example, the low end
temperature is reached. However, the correct temperature curve
for drying out is ensured because the next stage in every case is
not started until the default temperature for the current step has
been reached. In case of all other faults, please always notify your
qualified contractor.
6.9
The accommodation is always too cold
Increase the low end temperature of the heating curve. Raise the
temperature by the number of degrees you require to obtain a
comfortable temperature.
6.10 The accommodation is always too hot
Reduce the low end temperature of the heating curve by the
number of degrees the room temperature exceeds a comfortable
temperature.
6.11 The accommodation is too cold in winter
If the temperature of your home in spring and autumn is OK,
but the rooms do not become warm enough when the outside
temperature drops sharply (-10 °C), increase the gradient of the
heating curve. This means it will become slightly warmer in spring
and autumn. You should therefore slightly lower the low end temperature.
Another reason might be the dual mode point. Increasing the
dual mode point, however, can lead to high energy consumption.
6.12 The accommodation is too hot in winter
If your heating system produces too much heat when temperatures
drop sharply, reduce the gradient of the heating curve. This means
your home will become slightly colder in spring and autumn. You
should therefore slightly raise the low end temperature.
6.13 The accommodation is too cold in spring and
autumn
One possible cause may be that summer mode is enabled and that
central heating is off, as a result. Switch the appliance to manual
mode or ask your qualified contractor to change the standard
settings.
If the room temperature in spring and autumn (10 °C) is too low,
reduce the gradient and increase the low end temperature.
6.14 The accommodation is too hot in spring and
autumn
ff
Increase the heating curve gradient slightly and reduce its
low end slightly.
6.15 The accommodation is too hot in summer
Stop summer mode and activate passive cooling, if required.
6.16 Air quality is too poor
ff
Select a higher fan stage.
6.17 The air in winter is too dry
ff
Select fan stage 1.
ff
Activate the humidity correction.
When going away, switch the appliance to reduced ventilation.
You can set a fan program for this. Here you set the time during
which the appliance runs in day mode. For the rest of the time,
the appliance runs at the fan stage that you set in the „NIGHT
STAGE“ parameter.
If you cannot remedy the fault, notify your qualified contractor.
To facilitate and speed up your request, provide the number from
the type plate‌(000000-0000-000000).
D0000075599
1
1 Type plate
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LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart | 17
Operation
Menu structure
7.
Menu structure
Note
Some menu items are protected by a code and can only
be accessed and adjusted by a qualified contractor.
Note
Subject to appliance type, not all appliance parameters
and values are displayed in the different menus.
Menu item/parameter
Unit
Description
„„
INFO
… ROOM TEMPERATURE
 ROOM TEMPERATURE HC1
°C
If an external programming unit is connected and assigned to the heating circuit, the temperature measured in the programming unit is displayed. If the heating circuit has no programming unit assigned,
the actual set room temperature is displayed as a substitute value.
 SET ROOM TEMPERATURE HC1
 RELATIVE HUMIDITY HC1
°C
%
 ROOM TEMPERATURE HC2
°C
 SET ROOM TEMPERATURE HC2
 RELATIVE HUMIDITY HC2
°C
%
… HEATING
 OUTSIDE TEMPERATURE
 ACTUAL VALUE HC1
°C
°C
 SET VALUE HC1
 ACTUAL VALUE HC2
 SET VALUE HC2
 FLOW TEMPERATURE
°C
°C
°C
°C
 RETURN TEMPERATURE
°C
 PRESSURE HTG CIRC
 FLOW RATE
… DHW
 DHW TEMPERATURE
 DHW SET TEMPERATURE
 CYLINDER TOP TEMPERATURE
 MIXED WATER AMOUNT
… VENTILATION
 SUPPLY AIR ACTUAL
 SUPPLY AIR SET
 EXTRACT AIR ACTUAL
 EXTRACT AIR SET
 EXTRACT AIR HUMIDITY
 EXTRACT AIR TEMP.
 EXTRACT AIR DEW POINT
… COOLING
 DEW POINT TEMP. HC1
 DEW POINT TEMP. HC2
… SOLAR THERMAL
 COLLECTOR TEMP.
… HEAT GENERATOR
 HEATING STAGE
… HEAT PUMP
If an external programming unit is connected and assigned to the heating circuit, the humidity measured in the programming unit is displayed. If the heating circuit has no programming unit assigned, 0 %
is displayed.
If an external programming unit is connected and assigned to the heating circuit, the temperature measured in the programming unit is displayed. If the heating circuit has no programming unit assigned,
the actual set room temperature is displayed as a substitute value.
If an external programming unit is connected and assigned to the heating circuit, the humidity measured in the programming unit is displayed. If the heating circuit has no programming unit assigned, 0 %
is displayed.
Heating circuit temperature, calculated from the flow and return temperatures, weighted with the value
set under "FLOW PROPORTION". Whilst DHW is being heated, this parameter indicates the temperature
with which the DHW cylinder is being heated.
Default temperature for the heating circuit
The flow is the heating pipework between heat pump and heat consumer (radiator or indirect coil inside
the DHW cylinder). Here you can see the temperature of the water in this pipe section.
The return is the heating pipework between heat consumer and the heat pump. Here you can see the
temperature of the water in this pipe section.
bar
l/min
°C
°C
°C
l
Shows the current cylinder water temperature
Hz
m³/h
Indicates the current supply air fan speed.
This value indicates the percentage of maximum control voltage with which the supply air fan operates.
Supply air is the heated outdoor air that is blown into the ventilation area (living room, bedroom, nursery).
Current speed of the extract air fan
This value indicates the percentage of maximum control voltage with which the extract air fan operates.
Extract air is the stale air that is extracted from the extract air area (bathroom, kitchen, WC).
Hz
m³/h
%
°C
°C
°C
°C
°C
Temperature of the solar collector
18 | LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart
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Operation
Menu structure
Menu item/parameter
 HOT GAS TEMPERATURE
 HIGH PRESSURE
 LOW PRESSURE
 EVAPORATOR TEMP.
 CONDENSER TEMP.
 OIL SUMP TEMPERATURE
 EXHAUST AIR ACTUAL
 EXHAUST AIR SET
 DIFF. PRESSURE EVAP.
 COMPRESSOR STARTS
… AMOUNT OF HEAT
 HEAT METER HTG DAY
 HEAT METER HTG TTL
Unit
°C
bar
bar
°C
°C
°C
Hz
Pa
kWh
MWh
kWh
MWh
 HEAT M BOOST HTG TTL
MWh
 HEAT M BOOST DHW TTL
MWh
 HEAT M RECOVERY DAY
 HEAT M RECOVERY TTL
kWh
MWh
 HM SOLAR HTG DAY
 HM SOLAR HTG TOTAL
kWh
MWh
 HM SOLAR DHW DAY
 HM SOLAR DHW TOTAL
kWh
MWh
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In the evaporator, the refrigerant is evaporated at low pressure. As this happens, heat is extracted from
the air flow.
In the condenser, the refrigerant is liquefied at high pressure. This releases heat which is transferred to
the heating medium.
Current speed of the exhaust air fan
Set flow rate of the heat pump fan
 HEAT METER DHW DAY
 HEAT METER DHW TTL
 HM COOLING TOTAL
… RUNTIMES
 COMPRESSOR HEATING
 COMPRESSOR COOLING
 COMPRESSOR DHW
 ELEC BOOSTER HEATING
 ELEC BOOSTER DHW
… POWER CONSUMPTION
 PWR CON HTG DAY
 PWR CON HTG TTL
 PWR CON DHW DAY
 PWR CON DHW TTL
„„
DIAGNOSIS
… SYSTEM STATUS
 POWER-OFF
 STOVE / FIREPLACE
 AIR HEAT EXCH. DEFR.
 EVAPORATOR DEFROST
… FAULT LIST
Description
This value specifies the temperature of the gaseous refrigerant at the condenser inlet.
MWh
Amount of heat that was transferred by the heat pump to the heating circuit on this day.
Amount of heat that has been transferred by the heat pump to the heating circuit since the appliance
was commissioned.
Amount of heat that was transferred by the heat pump to the DHW cylinder on this day.
Amount of heat that has been transferred by the heat pump to the DHW cylinder since the appliance was
commissioned.
Amount of heat that has been transferred by the electric emergency/booster heater to the heating circuit
since the appliance was commissioned
Amount of heat that has been transferred by the electric emergency/booster heater to the DHW cylinder
since the appliance was commissioned
Amount of heat that was recovered from the ventilation system on this day.
Amount of heat that has been recovered from the ventilation system since the appliance was commissioned.
Amount of heat that was transferred by the solar thermal system to the heating circuit on this day.
Amount of heat that has been transferred by the solar thermal system to the heating circuit since the
appliance was commissioned.
Amount of heat that was transferred by the solar thermal system to the DHW cylinder on this day.
Amount of heat that has been transferred by the solar thermal system to the DHW cylinder since the
appliance was commissioned.
Amount of heat absorbed by the appliance via its evaporator from the rooms.
Here, the runtime of some appliance components since appliance commissioning is shown.
h
h
h
h
h
kWh
MWh
kWh
MWh
Power drawn by the compressor on this day for supplying the heating circuit.
Power drawn by the compressor since commissioning for supplying the heating circuit
Power drawn by the compressor on this day for supplying the DHW cylinder
Power drawn by the compressor since commissioning for supplying the DHW cylinder
LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart | 19
Operation
Menu structure
Menu item/parameter
„„
PROGRAMS
… HEATING PROGRAM
 HEATING CIRCUIT 1
 MONDAY
 TUESDAY
 WEDNESDAY
 THURSDAY
 FRIDAY
 SATURDAY
 SUNDAY
 MON - FRI
 SAT - SUN
 MON - SUN
 HEATING CIRCUIT 2
… DHW PROGRAM
… FAN PROGRAM
… HOLIDAY PROGRAM
 HOLS BEGINNING
 DAY
 MONTH
 YEAR
 HOUR
 MINUTE
 HOLIDAYS ENDING
 DAY
 MONTH
 YEAR
 HOUR
 MINUTE
… PARTY PROGRAM
 START
 END
… STANDARD SETTING
 MAX. ADVANCE
„„
SETTINGS
… HEATING
 ROOM TEMPERATURES HC1
 ROOM TEMPERATURE DAY HC1
 ROOM TEMP. NIGHT HC1
 ROOM TEMP. STANDBY HC1
 MANUAL SET HC1
 ROOM TEMPERATURE HC1
 ROOM TEMPERATURES HC2
 ROOM TEMPERATURE DAY HC2
 ROOM TEMP. NIGHT HC2
 ROOM TEMP. STANDBY HC2
 MANUAL SET HC2
 ROOM TEMPERATURE HC2
 HEATING CURVE HC1
 GRADIENT HC1
 LOW END HC1
 ROOM INFLUENCE HC1
 FLOW PROPORTION HC1
 MAX. SET VALUE HC1
 MIN. SET VALUE HC1
 HEATING CURVE HC1
 HEATING CURVE HC2
 GRADIENT HC2
 LOW END HC2
 ROOM INFLUENCE HC2
 MAX. SET VALUE HC2
 MIN. SET VALUE HC2
 HEATING CURVE HC2
 STANDARD SETTING
 PROP. COMP.
Options
Unit
Min.
Max.
Standard
1
1
0
0
0
31
12
99
23
59
1
1
11
1
1
0
0
0
31
12
99
23
59
1
1
11
0
00:00
00:00
23:45
23:45
min
0
300
0
°C
°C
°C
°C
°C
10
10
10
10
30
30
30
65
21
21
10
35
°C
°C
°C
°C
°C
10
10
10
10
30
30
30
65
21
21
10
35
0
0
0
0
10
0
5
20
100
100
65
40
0.3
3
0
30
55
10
°C
°C
0
0
0
10
0
5
20
100
65
40
0.3
3
0
55
10
%/K
0
10
2
System value
Time period 1 | Time period 2 | Time period 3
Time period 1 | Time period 2 | Time period 3
Time period 1 | Time period 2 | Time period 3
Time period 1 | Time period 2 | Time period 3
Time period 1 | Time period 2 | Time period 3
Time period 1 | Time period 2 | Time period 3
Time period 1 | Time period 2 | Time period 3
Time period 1 | Time period 2 | Time period 3
Time period 1 | Time period 2 | Time period 3
Time period 1 | Time period 2 | Time period 3
See HEATING CIRCUIT 1
See HEATING CIRCUIT 1
See HEATING CIRCUIT 1
°C
°C
°C
°C
20 | LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart
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Operation
Menu structure
Menu item/parameter
 I COMPONENT INV
 MAX BOOSTER STG HTG
 MAX FLOW TEMP HTG.
 SUMMER MODE
 HYST. SUMMER MODE
 OUTSIDE T ADJUSTMENT
 DUAL MODE POINT
 BOOSTER TIMEOUT
 OUTSIDE T CORRECTION
 SUPPR TEMP MEAS
 DESIGN TEMPERATURE
 HEATING SYS OUTPUT SIZING
… DHW
 DHW TEMPERATURES
 DHW SET DAY
 DHW SET NIGHT
 DHW SET STANDBY
 DHW SET MANUAL
 DHW TEMPERATURE
 MIXED WATER AMOUNT
 MWM SET DAY
 MWM SET NIGHT
 MWM SET STANDBY
 MWM SET MANUAL
 MIXED WATER AMOUNT
 STANDARD SETTING
 HYSTERESIS
 MWM HYSTERESIS
 BOOSTER TIMEOUT
 BOOSTER T ACTIVATE
 PASTEURISATION
 MAX DHW HTG DUR.
 PASTEURISATION TEMP.
 PASTEURISATION TIME
 DHW BOOSTER STAGE
 DHW BUFFER MODE
 MAX FLOW TEMP DHW
 DHW ECO
 DHW OUTPUT SUMMER
 DHW OUTPUT WINTER
 INTEGRAL SENSOR
 INTEGRAL SENSOR CLASS
 2ND DHW CYLINDER
… VENTILATION
 FAN CONTROL
 DIFFERENTIAL PRESSURE
 SET DIFFERENTIAL PRESSURE
 I FACTOR
 P FACTOR
 VENTILATION STAGES
 DAY STAGE
Options
Unit
Kmin
°C
°C
K
h
°C
min
°C
s
°C
%
Min.
0
0
10
10
1
0
-20
0
-20
0
-25
40
Max.
500
3
75
25
7
24
10
60
30
120
5
100
Standard
500
3
60
17
4
1
-10
20
0
60
-20
100
°C
°C
°C
°C
°C
10
10
10
10
-
65
65
65
65
-
45
45
10
45
-
l
l
l
l
l
50
50
50
150
288
288
288
288
200
150
50
150
K
2
50
0
-20
1
6
10
00:00
0
OFF
10
0
30
30
10
288
360
10
30
12
65
23:45
3
ON
75
1
100
100
-8
8
OFF | ON
2
50
90
-10
30
12
30
02:00
3
OFF
75
1
60
60
OFF
0
OFF
FLOW RATE‌| D
‌ IFFERENTIAL PRESSURE
FLOW RATE
min
°C
d
h
°C
OFF | ON
°C
OFF | ON
%
%
OFF | ON‌ | ‌CONTROL
100
10
10
60
2
2
0
3
 NIGHT STAGE
0
3
 STANDBY STAGE
0
3
 PARTY STAGE
0
3
 MANUAL STAGE
0
3
2‌ (‌Delivered condition: 0‌)
1‌ (‌Delivered condition: 0‌)
0‌ (‌Delivered condition: 0‌)
3‌ (‌Delivered condition: 0‌)
2‌ (‌Delivered condition: 0‌)
0
0
0
0
1000
1000
1000
1000
 VENTILATION TIMES
 UNSCHED. VENT TIME STAGE 0
 UNSCHED. VENT TIME STAGE 1
 UNSCHED. VENT TIME STAGE 2
 UNSCHED. VENT TIME STAGE 3
 FLOW RATE
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Pa
20
Pa s m³ 1
Pa/m³
1
min
min
min
min
System value
No function
No function
No function
No function
60
60
60
60
LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart | 21
Operation
Menu structure
Menu item/parameter
 FAN STAGE VENT. AIR‌1
 FAN STAGE VENT. AIR‌2
 FAN STAGE VENT. AIR‌3
 FAN STG. EXTRACT AIR‌1
 FAN STG. EXTRACT AIR‌2
 FAN STG. EXTRACT AIR‌3
 PASSIVE COOLING
 PASSIVE COOLING
 PASS. COOL EXP. AIR
 AIR STOP SUMMER DHW
 HUMIDITY PROTECTION
 HUMIDITY PROTECTION
 HUM. THRESHOLD VALUE
 HUMIDITY HYSTERESIS
 HUM. MASKING TIME
 SET HUMIDITY MIN
 OUTPUT REDUCTION
 SET HUMIDITY MAX
 OUTPUT INCREASE
 STOVE / FIREPLACE
 AIR/AIR HE
 MAX DEFROST DUR.
 DEFR START THRESHOLD
 FILTER SPEED
 FILTER CHANGE VOLUME
 SERVICE
 RUNTIME FILTER
 RESET FILTER
… COOLING
 ROOM TEMPERATURES HC1
 ROOM TEMPERATURE DAY HC1
 ROOM TEMP. NIGHT HC1
 ROOM TEMP. STANDBY HC1
 ROOM TEMPERATURE HC1
 ROOM TEMPERATURES HC2
 ROOM TEMPERATURE DAY HC2
 ROOM TEMP. NIGHT HC2
 ROOM TEMP. STANDBY HC2
 ROOM TEMPERATURE HC2
 COOLING MODE HC1
 COOLING MODE HC1
 COOLING SYSTEM HC1
 HC TEMP. COOLING HC1
 HYST. ROOM TEMP. HC1
 COOLING MODE HC2
 COOLING MODE HC2
 COOLING SYSTEM HC2
 HC TEMP. COOLING HC2
 HYST. ROOM TEMP. HC2
 STANDARD SETTING
 COOLING CAPACITY
 HYST. FLOW TEMP.
… SOLAR THERMAL
 SOLAR ACTIVATION
 TEMP. DIFFERENTIAL
 DHW COMPRESSOR DELAY
 DHW SOLAR TEMP.
 SOLAR HYSTERESIS
 COLLECTOR TEMP LIMIT
 COLL. PROTECT TEMP
 COLL. CUT-OFF TEMP
 COLLECTOR PROTECTION
 PRIORITY SOLAR
Options
Unit
m³/h
m³/h
m³/h
m³/h
m³/h
m³/h
Min.
10
80
80
10
80
80
Max.
300
300
300
300
300
300
OFF | EXTRACT AIR | SUPPLY AIR | BYPASS |
SUMMER CASSETTE
OFF | ON
OFF | ON
Standard
140
170
220
140
170
220
System value
OFF
OFF
OFF
OFF | ON
%
%
min
%
%
%
%
30
2
1
30
0
60
0
70
10
10
60
50
90
100
OFF | N/O CONTACT OFF | N/C CONTACT OFF |
N/O MONITORING | N/C MONITORING
min
OFF
55
5
5
50
0
60
0
OFF
60
0
0
1000‌ m³ 180
250
50
100
650
60
20
20
d
0
1024
0
OFF
°C
°C
°C
°C
10
10
10
30
30
30
25
25
30
°C
°C
°C
°C
10
10
10
30
30
30
25
25
30
10
0.5
25
3
OFF
AREA COOLING
18
0.5
OFF
ON
°C
K
10
0.5
25
3
OFF
AREA COOLING
18
0.5
%
K
30
0.5
50
5
30
1.5
K
min
°C
K
°C
°C
°C
OFF
2
0
10
0.6
50
100
130
ON
15
500
75
10
80
150
200
OFF
8
60
60
5
70
120
180
OFF
SOLAR THERMAL
OFF | ON
AREA COOLING‌| ‌FAN COOLING
°C
K
OFF | ON
AREA COOLING‌| ‌FAN COOLING
OFF | ON
OFF | ON
SOLAR THERMAL‌ | ‌COOLING‌ | ‌COOLING TIME
22 | LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart
www.stiebel-eltron.com
Operation
Menu structure
Menu item/parameter
 COOLING TIME
 START
 END
… SCREED DRYING PROG.
 START
 LOW END TEMPERATURE
 HIGH END TEMPERATURE
 TEMP. RISE PERIOD
 MAX HUT TIME
 GRADIENT
… COMMISSIONING
 PROGRAMMING UNIT
 CONTROL UNIT SOFTWARE
 CONTRAST
 BRIGHTNESS
 TOUCH SENSITIVITY
 TOUCH ACCELERATION
 LANGUAGE
 TERMINAL ADDRESS
 HC ROOM T DETECTOR
 ROOM TEMP CORRECTION
 REL HUMIDITY CORRECTION
 CONTROLLER
 SOFTWARE VERSION
 SOFTWARE ID
 RESET CONTROLLER
 FACTORY SETTING
 APPLIANCE TYPE
… TIME / DATE
 TIME / DATE
 DAY
 MONTH
 YEAR
 HOUR
 MINUTE
 SUMMERTIME MANUAL
 DAY BEGINNING
 DAY
 MONTH
 DAY ENDING
 DAY
 MONTH
 SUMMERTIME AUTOMATIC
„„
CONTRACTOR
… ENTER CODE
… FAULT SEARCH
 FAULT LIST
 DELETE FAULT MEMORY
 STOP EVENT
… SWITCH ON MANUALLY
 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
www.stiebel-eltron.com
Options
Unit
Min.
Max.
00:00
00:00
23:59
23:59
20
25
0
0
1
40
55
30
30
10
OFF | ON
K
K
d
d
K/d
Deutsch |‌ English ‌|‌ Francais ‌|‌ Nederlands ‌|‌
Italiano ‌|‌ Svenska ‌|‌ Polski ‌|‌ Cestina ‌|‌ Magyar ‌|‌
Espanyol ‌|‌ Suomi ‌|‌ Dansk
NONE | HC1 | HC2
ROOM TEMP CORRECTION‌|‌ROOM TEMP COR- °C
RECTION‌ HC1 ‌|‌ROOM TEMP CORRECTION‌HC2
%
System value
OFF
25
40
3
3
1
DEUTSCH
1
4
-5
5
4
NONE
0
-5
5
0
OFF | ON
OFF | ON
OFF
OFF
0
37
1
1
0
0
0
31
12
99
23
59
1
1
0
0
0
1
1
31
12
21
3
1
1
31
12
25
10
ON
0
64
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
Standard
OFF
0
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart | 23
Operation
Menu structure
Menu item/parameter
 SUPPLY AIR FAN SPEED
 WINDOW OPEN
 CONTACT COOLING
 2ND DHW CYLINDER
 OIL SUMP HEATING
… EVAPORATOR
 DEFROST END TEMP.
 MAX DEFROST DUR.
 BOOSTER REFR. GUARD
 DEFROST STOP
… REFRIGERATION UNIT
 COMPRESSOR CYCLING
 EXHAUST AIR SPEED
 STARTING CURR. LIMTR
… VENTILATION
 FAN TYPE
… PUMPS
 PUMP SPEED DHW
 PUMP SPEED HEATING
 MIXER/HEATING RATIO
 MIXER P. RUN-ON
 MIXER P. TYPE
 SOLAR P. TYPE
… PUMP CYCLES
 MINIMUM CYCLES
 MAXIMUM CYCLES
 OUTSIDE TEMP MIN CYC
 OUTSIDE TEMP MAX CYC
… EMERGENCY MODE AUTO
… POWER-OFF
… PROCESS VALUES
 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
 COMP N SET VAL UNLTD
 COMPR. N SET VAL LTD
… PROCESS STATUS
 HP SWITCH
 MOTOR PROTECTION
 DEFROST SIGNAL
 COMPRESSOR
 DHC 1
 DHC 2
 DHC 3
 DEFROST VALVE
 FAN
 COOLING
 POWER-OFF
 STOVE / FIREPLACE
… ANALYSIS
Options
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
Unit
Min.
Max.
Standard
OFF
OFF
OFF
OFF
OFF
°C
min
°C
°C
0
2
10
0
30
60
30
20
30
10
15
10
min
0
10
5
20
100
30
20
60
20
%
%
%
min
40
40
0
0
0
0
100
100
100
120
2
2
80
80
100
10
0
0
1/d
1/d
°C
°C
1
25
0
0
24
288
25
20
0
5
1
100
20
0
OFF
5
A
System value
0-2 (EBM / FLQ140 / FLQ160)
OFF | ON
%
°C
°C
°C
°C
°C
°C
°C
bar
bar
bar
%
%
%
%
%
Hz
Hz
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
OFF | ON
24 | LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart
www.stiebel-eltron.com
Operation
Menu structure
Menu item/parameter
 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
 COMPRESSOR SPEED
 MOTOR CURRENT
 MOTOR POWER
 MOTOR VOLTAGE
 INVERTER TEMPERATURE
 INVERTER FAULT
www.stiebel-eltron.com
Options
Unit
Min.
Max.
Standard
System value
°C
°C
°C
%
%
%
%
kW
Hz
A
kW
V
°C
LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart | 25
GUARANTEE | ENVIRONMENT AND RECYCLING
Guarantee
The guarantee conditions of our German companies do not
apply to appliances acquired outside of Germany. In countries
where our subsidiaries sell our products a guarantee can only
be issued by those subsidiaries. Such guarantee is only granted if the subsidiary has issued its own terms of guarantee. No
other guarantee will be granted.
We shall not provide any guarantee for appliances acquired in
countries where we have no subsidiary to sell our products.
This will not affect warranties issued by any importers.
Environment and recycling
We would ask you to help protect the environment. After use,
dispose of the various materials in accordance with national
regulations.
26 | LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart
www.stiebel-eltron.com
NOTES
www.stiebel-eltron.com
LWZ 5-8 CS Premium / LWZ 5 S Plus / LWZ 5-8 S Trend / LWZ 5 S Smart | 27
Deutschland
STIEBEL ELTRON GmbH & Co. KG
Dr.-Stiebel-Straße 33 | 37603 Holzminden
Tel. 05531 702-0 | Fax 05531 702-480
info@stiebel-eltron.de
www.stiebel-eltron.de
Verkauf
Tel. 05531 702-110 | Fax 05531 702-95108 | info-center@stiebel-eltron.de
Kundendienst
Tel. 05531 702-111 | Fax 05531 702-95890 | kundendienst@stiebel-eltron.de
Ersatzteilverkauf Tel. 05531 702-120 | Fax 05531 702-95335 | ersatzteile@stiebel-eltron.de
Australia
France
Austria
STIEBEL ELTRON SAS
7-9, rue des Selliers
B.P 85107 | 57073 Metz-Cédex 3
Tel. 0387 7438-88 | Fax 0387 7468-26
info@stiebel-eltron.fr
www.stiebel-eltron.fr
Slovakia
TATRAMAT - ohrievače vody s.r.o.
Hlavná 1 | 058 01 Poprad
Tel. 052 7127-125 | Fax 052 7127-148
info@stiebel-eltron.sk
www.stiebel-eltron.sk
Switzerland
STIEBEL ELTRON Ges.m.b.H.
Gewerbegebiet Neubau-Nord
Margaritenstraße 4 A | 4063 Hörsching
Tel. 07221 74600-0 | Fax 07221 74600-42
info@stiebel-eltron.at
www.stiebel-eltron.at
Hungary
STIEBEL ELTRON Kft.
Gyár u. 2 | 2040 Budaörs
Tel. 01 250-6055 | Fax 01 368-8097
info@stiebel-eltron.hu
www.stiebel-eltron.hu
STIEBEL ELTRON AG
Industrie West
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=dijbfg>
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 338915-41117-9437
B 336513-40913-9373
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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