STIEBEL ELTRON | LWZ 70 E | Operation Instruction | Stiebel Eltron LWZ 70 E Operation Instruction

Stiebel Eltron LWZ 70 E Operation Instruction
OPERATION AND INSTALLATION
Central ventilation unit with heat recovery
»» LWZ 70 E
CONTENTS | SPECIAL INFORMATION

SPECIAL INFORMATION
12.4
Restoring factory settings������������������������������������� 16
OPERATION
13.
Maintenance������������������������������������������������ 16
1.
1.1
1.2
1.3
1.4
General information�����������������������������������������3
Safety instructions����������������������������������������������� 3
Other symbols in this documentation����������������������� 3
Units of measurement������������������������������������������ 3
Standardised output data�������������������������������������� 3
14.
Troubleshooting�������������������������������������������� 18
15.
Disposal����������������������������������������������������� 19
2.
2.1
2.2
2.3
Safety����������������������������������������������������������3
Intended use������������������������������������������������������ 3
General safety instructions������������������������������������ 4
Test symbols������������������������������������������������������ 4
16.
16.1
16.2
16.3
16.4
16.5
Specification������������������������������������������������ 19
Dimensions and connections��������������������������������� 19
Standard circuit������������������������������������������������� 20
Wiring diagram������������������������������������������������� 21
Fan diagram����������������������������������������������������� 22
Data table�������������������������������������������������������� 23
3.
Appliance description���������������������������������������4
4.
4.1
4.2
4.3
4.4
4.5
Settings�������������������������������������������������������4
Remote control��������������������������������������������������� 4
User interface on the appliance������������������������������ 4
Switching the appliance on������������������������������������ 5
Switching off the appliance������������������������������������ 5
Standard mode��������������������������������������������������� 6
5.
5.1
5.2
Maintenance, cleaning and care����������������������������7
Replacement filter����������������������������������������������� 7
Cleaning filters��������������������������������������������������� 7
6.
6.1
6.2
Troubleshooting����������������������������������������������8
Fault analysis����������������������������������������������������� 8
Fault code��������������������������������������������������������� 8
INSTALLATION
7.
7.1
7.2
7.3
7.4
Safety����������������������������������������������������������9
General safety instructions������������������������������������ 9
Instructions, standards and regulations�������������������� 9
Operation of the appliance in buildings with
combustion equipment����������������������������������������� 9
Operating the appliance in passive houses���������������� 10
8.
8.1
8.2
8.3
Appliance description������������������������������������� 10
Standard delivery����������������������������������������������� 10
Required accessories������������������������������������������ 10
Further accessories�������������������������������������������� 10
9.
9.1
9.2
Preparations������������������������������������������������ 10
Installation site�������������������������������������������������� 10
Transport��������������������������������������������������������� 10
10.
10.1
10.2
10.3
10.4
Installation�������������������������������������������������� 10
Mounting the appliance��������������������������������������� 10
Connecting the condensate drain��������������������������� 11
Connecting air ducts������������������������������������������� 11
Power supply���������������������������������������������������� 12
11.
11.1
11.2
11.3
Commissioning��������������������������������������������� 12
Initial start-up��������������������������������������������������� 12
Shutdown�������������������������������������������������������� 12
Recommissioning����������������������������������������������� 12
12.
12.1
12.2
12.3
Settings����������������������������������������������������� 13
Settings menu��������������������������������������������������� 13
Read-out menu������������������������������������������������� 14
Service menu���������������������������������������������������� 15
GUARANTEE
ENVIRONMENT AND RECYCLING
SPECIAL INFORMATION
- The appliance may be used by children aged 8
and up 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 resulting risks. Children must never play with the appliance. Children must never clean the appliance
or perform user maintenance unless they are
supervised.
-- The power cable must only be replaced (for example if damaged) by qualified contractors authorised by the manufacturer.
-- Secure the appliance as described in chapter "Installation / Installation".
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OPERATION
General information
OPERATION
1.
General information
The chapters "Special Information" and "Operation" are intended
for both the user and qualified contractors.
Symbol
ff
This symbol indicates that you have to do something. The action you need to take is described step by step.
1.3
The chapter "Installation" is intended for qualified contractors.
Note
Read these instructions carefully before using the appliance and retain them for future reference.
Pass on the instructions to any new user where appropriate.
1.1
Safety instructions
1.1.1 Structure of safety instructions
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.
!
1.1.2 Symbols, type of risk
Symbol
Type of risk
Injury
!
Electrocution
Burns
(burns, scalding)
Meaning
Appliance disposal
Units of measurement
Note
All measurements are given in mm unless stated otherwise.
1.4
Standardised output data
Explanations to determine and interpret the specified standardised
output data
1.4.1 Standard: EN 13141-7
The output data specifically mentioned in text, diagrams and
technical datasheets has been determined in line with the test
conditions described in the standard shown in the heading of
this chapter.
Generally, these standardised test conditions will not fully meet
the conditions found at the installation site of the system user.
Depending on the chosen test method and the extent to which
the selected method deviates from the conditions described in the
standard shown in the heading of this chapter, any deviations can
have a considerable impact. Further factors that have an influence
on the test values are the measuring equipment, the system configuration, the age of the system and the flow rates.
A confirmation of the specified output data can only be obtained
if the conditions applicable to the relevant test match those of the
standard shown in the heading of this chapter.
2.
Safety
1.1.3 Keywords
2.1
Intended use
KEYWORD
DANGER
The appliance is designed as a mechanical ventilation unit with
centralised supply air and extract air routing.
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
General information is identified by the adjacent symbol.
ff
Read these texts carefully.
Symbol
!
Meaning
Material losses
(appliance damage, consequential losses and environmental pollution)
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This appliance is intended for domestic use. It can be used safely
by untrained persons. The appliance can also be used in a non-domestic environment, e.g. in a small business, as long as it is used
in the same way.
Any other use beyond that described shall be deemed inappropriate. Observation of these instructions and of instructions for any
accessories used is also part of the correct use of this appliance.
It is deemed inappropriate to:
-- Use extract air loaded with grease, explosive gases, dust or
adhesive aerosols
-- Install the unit outdoors
-- Connect cooker hoods and dryer exhausts to the ventilation
system.
Never adjust the setting of supply and extract air valves inside the
rooms. These have been set up by a qualified contractor during
commissioning.
LWZ 70 E | 3
OPERATION
Appliance description
!
General safety instructions
WARNING Injury
The appliance may be used by children aged 8 and up 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 resulting risks. Children must never play with the
appliance. Children must never clean the appliance or
perform user maintenance unless they are supervised.
Note
Trouble-free operation of the appliance is only possible
with a closed appliance cover.
2.3
Test symbols
See type plate on the appliance.
3.
Appliance description
the supply air flow and the extract air flow is disrupted, thus preventing freezing. The supply air fan may also, for short periods,
be switched OFF at very low outdoor temperatures. Preheating
the outdoor air by using an electric preheating coil or by means
of a geothermal heat exchanger, for example, can prevent this
imbalance or can prevent the supply air fan shutting down.
Bypass function
The appliance is equipped with a bypass function. If the conditions
for the bypass function are met, the ventilation air fan is switched
off. This enables warm indoor air to be transported away. Once
the conditions for the bypass function are no longer being met,
the ventilation air fan is switched back on.
The bypass function can be adjusted in the settings menu using
parameters 05, 06 and 07.
Bypass function
active
Bypass function
inactive
The outside temperature is at least 0.5 °C higher than the
room temperature.
The room temperature is lower than the bypass temperature reduced by the bypass hysteresis. The bypass
temperature is set in parameter 05. The bypass hysteresis
is set in parameter 06.
The appliance draws in outdoor air with a fan. A second fan draws
in extract air from rooms in the home with odour or humidity loads
(kitchen, bathroom and WC). Extract air and outdoor air are routed
through separate ducts. Extract air and outdoor air are filtered
by separate filters.
Both air streams are routed through a cross-countercurrent heat
exchanger. The extract air gives off heat, which is transferred to
the outdoor air. This means that the extracted stale indoor air
heats the fresh clean outdoor air, saving energy and routing fresh
air into the interior.
4.
Settings
Note
User operations are restricted to switching the appliance
ON and OFF. The basic settings are set by your qualified
contractor when commissioning the appliance.
You can use the user interface to infinitely adjust the air flow rates.
The appliance has a filter service indicator, as well as an optional
filter service indicator at the stage switch.
The control unit has three fan stages. The air flow rate is preset
for each fan stage by the qualified contractor. Constant flow rate
control ensures that the air flow rates of the supply air and extract
air are achieved irrespective of the duct pressure.
Fan stage
Humidity protection ventilation: This fan stage prevents mould
formation using the factory-set air flow rate of 50 m³/h. Alternatively, the contractor can set an air flow rate of 0 m³/h when
commissioning the appliance. In such a case, no humidity protection is provided.
Fan stage 1 should be seen as background ventilation, to be selected when going away for example.
Fan stage 2 is recommended for standard ventilation.
Conditions
The outside temperature is higher than 10 °C and lower
than the room temperature, and the room temperature is
higher than the bypass temperature set in parameter 05.
The outside temperature is lower than 10 °C.
4.1
Remote control
Observe the operating and installation instructions for the relevant
remote control (see chapter "Appliance description / Required accessories" or "Appliance description / Other accessories").
4.2
User interface on the appliance
The appliance has a user interface with display. This enables
air flow rates to be variably adjusted or operating details to be
checked.
Fan stage 3 is recommended as intensive ventilation, to temporarily increase the air flow rate for load peaks (e.g. as a party
stage).
Frost protection
On account of the high heat recovery level, low outdoor temperatures result in the extract air being cooled down so severely that
any condensate that is created in the process may freeze. Frost
protection ensures that the extract air side of the heat exchanger
cannot freeze. Depending on the outdoor air temperature and
the pressure drop at the heat exchanger, the balance between
1
2
3
4
5
1
2
Menu key
Minus key
LCD
Plus key
R key
3
4
5
D0000044898
2.2
You can access and change settings using the four keys (menu,
plus, minus, R).
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OPERATION
Settings
When the mains power is switched on, all available symbols are
displayed for two seconds. The backlight is also switched on for
60 seconds.
The appliance then runs according to the stage switch setting. If
no stage switch is connected, the appliance always runs in fan
stage 1.
If one of the keys is pressed, the display is illuminated for 30
seconds.
Switching on via software
When the menu key is pressed, you can use the plus or minus key
to choose between three different sub-menus:
-- Settings menu (SET)
-- Read-out menu (READ)
-- Service menu (SERV)
26_04_15_0032
If no keys are pressed and/or if no blocking fault occurs, standard
mode is displayed.
If the appliance has been switched off via software, "OFF" is displayed.
With the R key, you can exit any selected menu and return to
standard mode.
Button Key function
Menu
Open menu; open sub-menu; enable parameter for value change;
confirm value change
Scroll; adjust value; switch appliance on or off from standard mode
(press and hold down for 5 seconds)
+
Scroll; adjust value
R
One step back in the menu; reset adjusted value; filter reset (press
and hold down for 5 seconds); delete fault history
4.3
5s
ff
Switch on the appliance by pressing the minusbutton for 5
seconds.
4.4
Switching the appliance on
26_04_15_0031
To switch on the display backlight without changing anything in
the menu, press the R key briefly (less than 5 seconds).
Switching off the appliance
Switching off via software
ff
Press and hold down the minus button for 5 seconds to
switch off the appliance.
26_04_15_0009
The display shows "OFF".
26_04_15_0011
5s
26_04_15_0048
ff
Plug the appliance into a standard socket.
Interrupting the power supply
26_04_15_0010
26_04_15_0029
All display symbols are shown for two seconds.
D0000044916
The software version is displayed for two seconds.
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The display is now blank.
LWZ 70 E | 5
OPERATION
Settings
4.5
4.5.2 Indication of the air flow rate
D0000044915
WARNING Electrocution
Before working on the appliance, always isolate the
appliance from the power supply by first switching the
appliance off via the software and then unplugging it
from the mains.
Standard mode
In standard mode, the display shows up to four different pieces of
information (operating modes and values) simultaneously.
The selected air flow rate of the supply air and extract air fans is
displayed.
If the air flow rates of the supply air and extract air fans differ,
e.g. when an external switching contact is used, the highest air
flow rate is always displayed.
D0000044913
If you switch the appliance off using the programming unit, the
text "OFF" appears.
4.5.3 Message texts in standard mode
D0000044921
1 Indication of the fan stage, indication of connected
appliances
2 Indication of the air flow rate
3 Message text, e.g. filter status text, triggering of external
switching contact, etc.
4 Fault symbol
At this point on the display, a message text may appear. The message text "FILTER" always takes priority over other message texts.
4.5.1 Fan stage
Description
D0000044914
Message text
FILTER
A fan symbol is displayed when the supply air fan and the extract
air fan rotate. The fan symbol is not visible when the fans are at
a standstill.
If FILTER is displayed, the filter must be cleaned or replaced.
V1 or V2
The number after the fan symbol indicates the fan stage.
Fan stage Description
indicator
The supply air and extract air fans generate an air flow rate of
50 m³/h or stop. This depends on the setting of parameter 01.
This fan stage cannot be enabled with a 3-stage switch. This fan
stage prevents mould formation using the factory-set air flow
rate of 50 m³/h.
The supply air and extract air fans rotate according to stage 1
of the stage switch. The air flow rate depends on the parameter
02 setting.
The supply air and extract air fans rotate according to stage 2
of the stage switch. The air flow rate depends on the parameter
03 setting.
The supply air and extract air fans rotate according to stage 3
of the stage switch. The air flow rate depends on the parameter
04 setting.
A number of appliances of this type have been connected. The
supply air and extract air fans rotate according to the fan stage
selected at the master appliance. If the appliance is connected
in a cascade, the slave number of the appliance is displayed.
If V1 or V2 is displayed, one of the 0-10 V inputs is enabled.
Only when using connection X1:
Message text
Description
Slave 1, Slave 2, etc. Master appliance:
Slave appliance:
With connected appliances, the message text indicates
which appliance is the "Slave 1" to "Slave 9". The default
display for fan operation is indicated on the master
appliance.
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OPERATION
Maintenance, cleaning and care
Maintenance, cleaning and care
Maintenance by the user is limited to filter cleaning or replacement
required at certain intervals.
5.1
Replacement filter
Product Part
Description
Classification in acname
number
cordance with ISO 16890
FMS LWZ 70 222446 Filter mat G3;
ISO Coarse > 45 % (G3)
10 pce per packing unit
FMS F7-2 70 227660
Fine filter F7;
ePM1 ≥ 50% (F7)
2 pce per packing unit
5.2
ff
Extract the supply air and extract air filters. Make a note of
how the filters were fitted.
26_04_15_0015
5.
ff
Clean the filters, e.g. with a vacuum cleaner.
Cleaning filters
D0000044917
Filters must be cleaned when "FILTER" is displayed.
D0000041947
ff
Replace filters annually.
Never operate the appliance without filters.
Cleaning or replacing filters
ff
Push the cleaned or new filter into the appliance.
>5s
ff
Press and hold down the minus button for 5 seconds to
switch off the appliance.
ff
Remove the filter flaps.
D0000041948
D0000041945
>5s
ff
Assemble the two filter flaps.
ff
Switch on the appliance by pressing the minusbutton for 5
seconds.
1
1
2
3
D0000044937
2
D0000041946
5s
ff
After cleaning or replacing the filters, hold down the R key
for 5 seconds to reset the filter display.
1 Extract air filter
2 Supply air filter
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LWZ 70 E | 7
OPERATION
Troubleshooting
To confirm that the filters have been reset, the text "FILTER" will
flash briefly. Even if the message "FILTER" has not yet been displayed, you can reset the filter message. The counter is then reset
to zero.
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). The type plate is located on
the appliance cover.
Once the filter has been reset, the text "FILTER" disappears and
standard mode is displayed again.
Troubleshooting
6.1
Fault analysis
D0000044931
6.
If the appliance detects a fault, a flashing fault symbol (spanner)
is displayed, possibly together with a fault code. The appliance
differentiates between a fault, where the appliance continues to
operate with limited functionality, and a blocking fault, where both
fans are stopped. In the event of a blocking fault, the settings and
read-out menus are also switched off and access is restricted to
the service menu.
The appliance remains in this fault condition until the problem has
been resolved. The appliance then resets itself (auto reset) and
standard mode is displayed again.
6.2
Fault code
D0000044923
Non-blocking fault
If the appliance detects a non-blocking fault code, it continues to
operate with limited functionality. Non-blocking faults are displayed with the fault symbol (spanner).
D0000036353
Blocking fault
If the appliance detects a blocking fault code, it stops. The permanently illuminated display shows the fault symbol (spanner)
together with a fault code.
ff
Notify a qualified contractor, who can correct the fault.
A blocking fault cannot be resolved by briefly disconnecting the
appliance from the power supply. The fault itself must first be
rectified.
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INSTALLATION
Safety
INSTALLATION
7.
Safety
Only a qualified contractor should carry out installation, commissioning, maintenance and repair of the appliance.
7.1
General safety instructions
We guarantee trouble-free function and operational reliability only
if original accessories and spare parts intended for the appliance
are used.
7.2
Instructions, standards and regulations
Note
Observe all applicable national and regional regulations
and instructions.
!
7.3
WARNING Injury
In connection with the fire prevention regulations concerning the installation of ventilation systems, observe
all country-specific regulations and requirements. In
Germany, these are particularly the building regulation
guideline on fire prevention requirements of ventilation
systems in its applicable version.
Operation of the appliance in buildings with
combustion equipment
The term “combustion equipment” used below includes, for example, tiled stoves, fireplaces and equipment with gas combustion.
!
WARNING Injury
Ventilation units can generate negative pressure in the
dwelling. If combustion equipment is operating at the
same time, combustion exhaust gases can penetrate the
room where the combustion equipment is installed. It is
therefore important to observe a number of points for
simultaneous operation of a ventilation unit and combustion equipment.
The engineering, installation and operation of the ventilation unit
and combustion equipment must be carried out in accordance with
national and regional regulations.
7.3.1 Planning safety measures
Together with the relevant authorities, engineers plan the safety
measures that are required for simultaneous operation of a ventilation unit and combustion equipment.
Alternate operation
Alternate operation means that, when the combustion equipment
is started, the mechanical ventilation system is switched off and/
or cannot be started. Alternate operation must be ensured by
appropriate measures, e.g. automatically enforced shutdown of
the ventilation unit.
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Simultaneous operation
For simultaneous operation of combustion equipment and a mechanical ventilation system, we recommend choosing approved
room sealed combustion equipment (in Germany, with DIBt approval).
If open flue combustion equipment is operated in the dwelling
at the same time as a ventilation unit, combustion exhaust gases
must be prevented from penetrating the home as a result of possible negative pressure in the room.
The ventilation unit may only be operated in combination with
intrinsically safe combustion equipment. This combustion equipment has, for example, a draught hood or an exhaust gas monitor
and is permitted to be operated in conjunction with ventilation
units. Alternatively, external, tested safety equipment can be connected to monitor the operation of the combustion equipment.
For example, you can install differential pressure monitoring to
monitor the chimney draught and to switch off the ventilation unit
in the event of a fault.
The equipment for differential pressure monitoring must fulfil the
following requirements:
-- Monitoring of the differential pressure between the connection piece to the chimney and the room where the combustion equipment is installed
-- Possibility of matching the shutdown value for the differential
pressure to the minimum draught requirement for the combustion equipment
-- Floating contact to switch off ventilation
-- Optional connection of a temperature capturing device so
that differential pressure monitoring is only enabled when
the combustion equipment is in operation and so that unwanted shutdowns due to environmental influences can be
avoided
Note
Differential pressure switches that use the pressure
differential between the outdoor air pressure and the
pressure in the room where the combustion equipment
is sited as a response criterion are not suitable.
Note
We recommend installing and regularly maintaining a
carbon monoxide detector in accordance with EN 50291
for operation of any combustion equipment.
7.3.2 Commissioning
When commissioning the ventilation unit, it is important to check
and document in the commissioning log that combustion exhaust
gases are not penetrating the dwelling in a quantity that is harmful
to health.
Commissioning in Germany
Acceptance is carried out by the local flue gas inspector.
Commissioning outside Germany
Acceptance must be carried out by a specialist. In case of doubt,
you must involve an independent expert in the acceptance procedure.
LWZ 70 E | 9
INSTALLATION
Appliance description
7.3.3 Maintenance
Minimum clearances
7.4
≥300
Regular maintenance of the combustion equipment is prescribed.
Maintenance includes checking the exhaust gas extraction system,
the free pipe cross-sections and the safety equipment. The relevant qualified contractor responsible must prove that there is a
sufficient flow of combustion air.
Operating the appliance in passive houses
Appliance description
8.1
Standard delivery
The following are delivered with the appliance:
-- Wall mounting bracket set (2 mounting brackets, 3 protective caps, 1 rubber strip, 2 rubber rings, 1 set of installation
instructions)
-- PVC condensate drain (1x1.5” threaded plastic nut, 1 sealing
ring, 1 PVC glued joint)
-- Approx. 90 cm long cable for connecting a remote control
9.2
8.2
10. Installation
Required accessories
-- Hardwired remote control used to control the air flow rates
preset in three stages. Our range of accessories includes remote control units with additional functions.
8.3
D0000041883
8.
≥300
If operating the appliance in a passive house, the factory-fitted
outdoor air filter must be replaced. See chapter “Appliance description / Accessories”.
Transport
To protect the appliance against damage, you should transport it
to the installation room inside its original packaging.
10.1 Mounting the appliance
Further accessories
10 mm
9.
Preparations
9.1
Installation site
26_04_15_0078
-- Preheater coil
-- You can obtain ventilation pipes, extract air and supply air
valves and similar accessories from us.
The appliance can be mounted on the wall with the wall mounting
bracket set supplied.
!
Material losses
For vibration-free mounting, a solid wall with a minimum
mass of 200 kg/m2 is required. A plaster board or metal
framed wall is inadequate. Additional measures such as
a double skin or additional supports would be needed
in such cases.
Ensure the equipment is level after installation.
The installation site must have an adequate condensate drain with
stench trap and a fall for the condensate.
The installation site must be free from the risk of frost.
ff
Undo the two top crosshead screws on the back of the
appliance.
ff
Secure one of the two rails to the appliance with screws.
!
Material losses
ff
Check whether the wall can bear the weight of the
appliance.
ff
Use appropriate rawl plugs and screws suitable for
the wall structure to attach the rail.
ff
Mount the second rail on the wall as a retainer. To avoid
sound transmission, place the washers supplied between the
wall and the rail.
ff
Affix the spacers supplied to the back of the appliance.
10 | LWZ 70 Ewww.stiebel-eltron.com
INSTALLATION
Installation
26_04_15_0079
10.3 Connecting air ducts
External wall ducts
ff
Place the rubber strips supplied on the rail mounted on the
wall. The rubber strip helps provide sound insulation.
ff
Fit the appliance so that the two rails interlock.
Supply outdoor air from a location where contamination (dust,
soot, odours, flue gas, exhaust air) is as low as possible.
When installing external wall ducts, prevent any short circuit between the air intake and the air discharge.
10.2 Connecting the condensate drain
!
During installation, ensure that no metal swarf enters the
ductwork. However, should this still occur, you must remove this
material, otherwise the fans may be damaged.
Material losses
Never kink the hose, to ensure the condensate drains
perfectly. The fall must be at least 10 %. Ensure the device
is level after installation.
Silencers
Install a silencer in both the supply air and extract air ducts. We
recommend installing additional silencers if required to avoid
sound transmission.
If a room with a high noise level must be ventilated, install additional silencers upstream of this room to reduce sound transmission to adjacent rooms.
Aspects such as carried voices and impact sound must also be
taken into consideration in the case of ducts embedded in concrete. Carried voices should be avoided by designing the duct
with separate branches to the extract air and supply air valves.
If required, insulate the supply air ducts, e.g. if they are outside
the insulated wall panel.
> 60
D0000041960
Overflow apertures
The condensate drain is routed through the floor plate. The condensate must drain away via the domestic sewer system.
ff
Secure the condensate drain connector supplied along with
the gasket and union nut to the condensate drain located underneath the appliance.
You can fit the condensate drain pipe (bent if required) to this
condensate drain connector with a glued joint.
ff
Before connecting the condensate drain to the appliance,
pour water into the siphon to create a stench trap.
The condensate drain pipe must terminate below the water level
in the siphon. The condensate drain pipe must be immersed in
the water in the siphon by at least 60 mm.
www.stiebel-eltron.com
In living rooms and bedrooms, air is only blown in. Air is only
extracted from rooms where odours and moisture are generated.
Ventilation grilles must be installed in internal doors or walls,
or the air gap beneath the door must be increased to ≥ 8 mm to
ensure an unobstructed air flow.
Insulation against condensation
!
Material losses
When warm air meets cold surfaces, condensation can
result.
ff
For outdoor air and exhaust air ducts, use vapour-proof thermally insulated pipes.
ff
If you use uninsulated pipes and moulded parts for
this pipework, ensure that they are adequately insulated.
ff
Insulate the supply air and extract air ducts if they
are routed through unheated rooms.
The extract air duct does not require a control valve, because the
necessary air flow rates are controlled by the appliance itself.
LWZ 70 E | 11
INSTALLATION
Commissioning
11. Commissioning
10.4 Power supply
WARNING Electrocution
Carry out all electrical connection and installation work
in accordance with national and regional regulations.
WARNING Electrocution
Before connecting the appliance to the mains power supply, isolate all power cables. Isolation from the mains
power supply must be carried out with a contact separation of at least 3 mm, e.g. by means of omnipolar
isolators.
You can connect the appliance to a standard socket with the plug
fitted to the appliance.
!
WARNING Injury
If the unit is switched on without the air ducts connected
and someone reaches through the air connectors into the
unit, there is a risk of injury.
Do not commission the unit until the air ducts are firmly
connected to it.
11.1 Initial start-up
Setting the air flow rate
Output and energy consumption of the appliance depend on the
pressure drop in the duct system and the resistance of the filters.
Fan stage
1
m³/h
Air flow rate
0
m³/h
50: Moisture protection ventilation
This fan stage prevents mould formation using the
factory-set air flow rate of 50 m³/h.
must be lower than for stage 2
m³/h
must be lower than for stage 3
m³/h
50 - 180
5
2
1 2
4
1 Power cable
2 Two-pole screw connection (only suitable for low voltage)
3 Modular plug-in connection (RJ 12, only suitable for low
voltage)
4 Service connection
5 Entry electrical cables
Connecting safety equipment for stove/fireplace operation so
that the safety equipment can interrupt the power supply
ff
Connect the safety equipment in accordance with the diagram in chapter "Specification / Standard circuit".
D0000041968
3
The air flow rate of the higher fan stage is automatically selected
if one of the above conditions is not met.
11.2 Shutdown
Even during longer periods away from home, we recommended
that the equipment should be allowed, via the remote control,
to run at switch position 1. If you nevertheless need to take the
appliance out of use for an extended period, switch it off via the
user interface and unplug it from the mains to isolate it from the
power supply.
ff
Clean or replace filters.
11.3 Recommissioning
ff
Check whether filters are fitted in the appliance. Never start
the appliance without filters.
ff
Check whether the condensate drain is damaged or kinked.
12 | LWZ 70 Ewww.stiebel-eltron.com
INSTALLATION
Settings
12. Settings
Parameter change
ff
Press menu.
12.1 Settings menu
Note
Changes to settings not described may only be made by
agreement with the manufacturer. Incorrect settings may
impair the correct appliance function.
D0000044926
For optimum appliance function, you can change parameters used
to adapt the appliance to the actual installation. Some parameter
settings such as the air flow rates have been set out in the technical
details appertaining your individual building.
ff
The parameter value starts to flash.
12.1.1 How to set parameters
ff
Press menu in standard mode.
D0000044929
The settings menu is displayed ("SET").
26_04_15_0064
ff
Use plus or minus to change the parameter value.
Discarding a parameter change
ff
If you do not want to save the amended parameter value,
press the R key.
D0000044922
D0000044927
Enabling the settings menu
ff
Press menu again to enable the settings menu.
Confirm parameter value
1
1 Parameter number
2 Parameter value
www.stiebel-eltron.com
2
D0000044924
D0000044928
Selecting parameters
ff
Use the plus or minus key to select the parameter you want
to set.
ff
If you do want to save the amended parameter value, press
the R key.
Note
To change other parameters, repeat the steps described
from "Selecting parameters". If you do not want to change
any more parameters, press R. This brings you back to
normal operating mode.
LWZ 70 E | 13
INSTALLATION
Settings
12.1.2 List of parameters in the settings menu
Parameter Description
Unit
01
m3/h
Factory
setting
50
Setting range
Step
size
Display text and
symbols
0
Air flow rate of stage
02
Air flow rate of stage 1
m3/h
75
50: Moisture protection ventilation
50 - 180
5
03
Air flow rate of stage 2
m3/h
100
50 - 180
5
04
Air flow rate of stage 3
m3/h
150
50 -180
5
05
Bypass temperature
°C
22
15 - 35
0.5
06
Bypass hysteresis
°C
2
0-5
0.5
07
Bypass function
0
0 (Automatic function)
BYPASS
BY HYS
BYPASS
08
09
0
OFF
1 (bypass function permanently inactive)
2 (bypass function permanently active)
0 - 9 (0 = master)
This parameter is not relevant for you. As default, this
parameter must remain OFF for this appliance.
OFF (Air flow rate for supply/extract air the same)
ON (Pressure imbalance permissible)
-50 - 50
10
BUS address
Introduction of an additional extract air flow.
Pressure imbalance permissible
11
Fixed pressure imbalance
12
Preheating coil connected
OFF
ON (Preheater coil connected)
OFF (No preheater coil)
13 - 29
30
no function
Humidity sensor
OFF
31
Humidity sensor sensitivity
0
OFF (Humidity sensor switched off)
ON (Humidity sensor switched on)
2 (sensitive) to -2 (least sensitive)
ON
m3/h
0
BUSADR
CV+WTW
1
12.2 Read-out menu
26_04_15_0072
With the read-out menu, you can call up some values for more
detailed information on the function of the appliance. Values and
settings cannot be changed in the read-out menu.
26_04_15_0064
ff
Press Menu to enable the read-out menu.
The settings menu is displayed ("SET").
1
2
26_04_15_0073
ff
Press menu in standard mode.
26_04_15_0071
ff
Use plus or minus in the read-out menu to move to the required parameter.
ff
Press plus or minus to switch to the read-out menu.
Read-out menu
01
02
03
04
Description of the actual value
Unit
Room temperature
°C
oC
Outside temperature (captured by the outside
temperature sensor)
Bypass status (ON = Bypass function active, OFF =
Bypass function not active)
Frost protection status (ON = Frost protection enabled, OFF = Frost protection disabled)
14 | LWZ 70 Ewww.stiebel-eltron.com
INSTALLATION
Settings
D0000044932
2x
26_04_15_0056
Indication "No fault message"
ff
Press R twice to return to standard mode.
Current fault message (fault symbol on the display)
If no key is pressed for 5 minutes, the appliance returns automatically to standard mode.
For fault messages with a cause that has not yet been eliminated,
the fault symbol (spanner) appears.
12.3 Service menu
26_04_15_0075
In the service menu, you can view the last 10 fault messages.
In the case of blocking faults, the settings menu and the read-out
menu are blocked and only the service menu can be accessed.
Pressing menu opens the service menu.
Resolved fault message (no fault symbol on the display)
Viewing the service menu
26_04_15_0064
26_04_15_0076
For fault messages with a caused that has been eliminated, the
fault symbol (spanner) does not appear.
ff
Press menu in standard mode. The settings menu is
displayed.
2x
D0000044932
26_04_15_0057
Back to standard mode
ff
Press R twice to return to standard mode.
ff
Press plus or minus to switch to the read-out menu.
Deleting fault messages
1
2
26_04_15_0058
You can delete all fault messages by holding down R for five seconds. This is only possible if there are no active faults.
1 Fault message number
2 Fault code
ff
Press the menu button to enable the service menu.
You can use plus and minus to scroll through the read-out menu.
www.stiebel-eltron.com
LWZ 70 E | 15
INSTALLATION
Maintenance
12.4 Restoring factory settings
It is possible to reset all changed settings simultaneously to factory
settings.
D0000044930
D0000041950
All changed settings revert back to their factory default settings;
all message/fault codes are also deleted from the service menu.
ff
Remove the display.
ff
Press plus and minus simultaneously and hold down for 10
seconds.
All display symbols light up for three seconds. The appliance is
then in standard mode.
Maintenance by the qualified contractor includes the cleaning of
the cross-countercurrent heat exchanger and the fans.
Subject to runtime, this maintenance work should be carried out
every 3 years.
ff
Switch off the appliance by pressing the minus key for
5 seconds.
ff
Disconnect the power supply.
ff
Remove the filter flaps.
ff
Extract the filters. Make a note of how the filters were fitted.
D0000041949
2x
ff
Remove the front cover.
ff
Pull the insert on which the control PCB is fitted out of the
appliance.
ff
Disconnect all plugs on the control PCB that are connected to
plug-in connections at the top of the appliance.
ff
Remove the earth wire from the appliance body.
D0000041952
WARNING Electrocution
In the event of damage to the power cable this must
always be replaced by a qualified contractor authorised
by the manufacturer, using original spare parts.
D0000041951
13. Maintenance
ff
Remove the heat exchanger from the appliance. Avoid damaging the foam parts in the appliance.
16 | LWZ 70 Ewww.stiebel-eltron.com
26_04_15_0047
INSTALLATION
Maintenance
ff
Use a commercially available vacuum cleaner to remove dust
and other loose dirt particles from the intake and discharge
surfaces.
ff
If required, clean the heat exchanger with warm water
(max. 55 °C) and a commercially available detergent. Never
use solvents.
ff
Afterwards flush the heat exchanger with water.
ff
Reconnect the fan cables to the PCB. Observe the label in
the appliance to establish the correct position for the plug-in
connections.
ff
Slide the insert with the control PCB into the appliance.
ff
Install the display.
ff
Reconnect all cables disconnected before cleaning, to their
original position.
ff
Slide the heat exchanger back into the appliance.
ff
Fit the front cover.
ff
Insert the filters, respectively with their clean sides facing
towards the heat exchanger.
ff
Assemble the filter flaps.
ff
Switch on the power supply.
ff
Switch on the appliance using the user interface by holding
down minus for 5 seconds.
ff
After cleaning the filter or installing a new filter, reset the filter status indicator by holding down R for 5 seconds.
Cleaning the air ducts
D0000041953
Air ducts should be checked and possibly cleaned at regular intervals. Releasing the air ducts from the appliance or over the
extract air and supply air valves enables inspection and cleaning.
D0000041954
ff
Extract the fan unit from the appliance.
ff
Remove the fans.
ff
Clean the fans with a soft brush.
ff
Do not move the pressure compensation weights.
ff
Reinstall the fans.
ff
Push the complete fan unit back into the appliance.
www.stiebel-eltron.com
LWZ 70 E | 17
INSTALLATION
Troubleshooting
14. Troubleshooting
E105 yes
E106 yes
E107 no
E108 no
E111 no
E999 yes
Appliance behaviour
Both fans are
switched off. The
preheating coil, if
present, is switched
off. Restarting occurs
every 5 minutes.
The supply air Both fans are
fan is faulty.
switched off. The
preheating coil, if
present, is switched
off. The reheater
coil, if present, is
switched off. Restarting occurs every 5
minutes.
The temperBoth fans are
ature sensor switched off. The
for capturing preheating coil, if
the outside
present, is switched
temperature is off.
faulty.
The temperThe bypass function
ature sensor is switched off.
for capturing
the extract air
temperature is
faulty.
If installed: The The reheater coil, if
temperature present, is switched
sensor in the off. The geothermal
external reheat exchanger, if
heater coil is present, is switched
faulty.
off.
The humidThe appliance is still
ity sensor is
operating.
faulty.
Measure
Isolate the appliance
from the power supply. Replace the extract air fan. Switch
on the power supply
to the appliance
again. The fault is
reset automatically.
Check the cabling.
Isolate the appliance
from the power supply. Replace the supply air fan. Switch on
the power supply to
the appliance again.
The fault is reset
automatically. Check
the cabling.
Isolate the appliance
from the power
supply. Replace the
outside temperature
sensor. Switch on the
power supply to the
appliance again. The
fault is reset automatically.
Isolate the appliance
from the power
supply. Replace the
room temperature
sensor.
ON
D
X3
X4
X6
D0000041967
Fault Block- Cause
code ing fault
E104 yes
The extract air
fan is faulty.
Correct microswitch setting
ff
Check whether the microswitches on the control PCB are
set correctly (see diagram). If message E999 is nevertheless
displayed, replace the control PCB with a PCB of the correct
type.
Stage switch modular connector
If stage 2 on a stage switch does not work, the modular connector
of the stage switch is not connected correctly.
ff
Disconnect one of the RJ plug-in connections to the stage
switch. Fit a new plug-in connection in the opposite
direction.
Replace the temperature sensor for the
outside temperature.
Isolate the appliance
from the power
supply. Replace the
humidity sensor.
The miThe appliance does Adjust the microswitches
not operate; the red croswitches coron the control fault LEDs at the
rectly.
PCB are not set stage switch are
correctly.
also off.
18 | LWZ 70 Ewww.stiebel-eltron.com
INSTALLATION
Disposal
15. Disposal
16. Specification
Removal
16.1 Dimensions and connections
WARNING Electrocution
Disconnect the appliance from the power supply.
d45
145
The following tools are required for disassembly and material
separation prior to disposal:
-- Personal protective equipment
-- Set of screwdrivers
-- Set of spanners
-- Combi pliers
-- Stanley knife
600
45
248
560
79
g04
g05
b01
168
125
D0000041882
g03
302
77
g06
213
213
77
75
LWZ 70 E
b01
www.stiebel-eltron.com
d45
g03
Entry electrical
cables
Condensate drain
Outdoor air
Diameter
Nominal diameter
g04
Exhaust air
Nominal diameter
DN 125
g05
Extract air
Nominal diameter
DN 125
g06
inrushing air
Nominal diameter
DN 125
mm
13
DN 125
LWZ 70 E | 19
INSTALLATION
Specification
16.2 Standard circuit
1
1 2 4 6 5
3 = Party
LED
5
24 V
P (0V)
3 = Party
LED
4
0 = Aus
2 = Tag
3
24 V
P (0V)
3 = Party
LED
0 = Aus
2 = Tag
3 = Party
LED
0 = Aus
2 = Tag
24 V
P (0V)
1 2 3 4 5 6
24 V
P (0V)
2
1
5 4 10 11 12
0 = Aus
2 = Tag
3
2
X2/1-6
6 x 0,5 mm² max. 30 m
6
8 9
L 1/N/PE
N 230V ~50Hz
PE
10
L
L´
L
N PE
D0000055737
7
1 3-stage switch
2 4-stage switch
3 Air quality sensor FEQ
4 Remote control FEZ
5 Ventilation unit
6 Power supply, domestic electricity meter
7 Differential pressure switch, combustion equipment
8 Pressure connection “stove”
9 Pressure connection “room”
10 Flue gas temperature sensor
20 | LWZ 70 Ewww.stiebel-eltron.com
INSTALLATION
Specification
M
12
BN
WH
12
K
BN
WH
BN
WH
16.3 Wiring diagram
12
12
1
2
3
A
C
D
B
A
B
C
D
E
K
M
D0000041966
E
3-stage switch, 4-stage switch, air quality sensor FEQ or
remote control FEZ (see chapter "Specification / Standard
circuit")
External preheating coil (optional)
Outside temperature sensor
Room temperature sensor
Service connection
Wire no. 1
Wire no. 2
www.stiebel-eltron.com
LWZ 70 E | 21
INSTALLATION
Specification
16.4 Fan diagram
550
500
450
400
350
300
1
2
250
3
0,59
150
100
0,40
50
0,29
0,28
0
0,27
0,34
0,32
0,37
0,40
0,43
0,37
0,40
0,53
0,45 0,46
0,32
0,28
0,26
0
X
Y
1
2
3
x
0,51
0,49
4
25
50
75
100
125
150
175
200
D0000056686
200
0,62
Air flow rate [m³/h]
Average value, static pressure [Pa]
Example: system curve with low pressure drop
Example: system curve with average pressure drop
Example: system curve with higher pressure drop
Specific power consumption of both fans [Wh/m³]
22 | LWZ 70 Ewww.stiebel-eltron.com
INSTALLATION | GUARANTEE | ENVIRONMENT AND RECYCLING
Specification
16.5 Data table
LWZ 70 E
233851
Sound emissions
Sound power level Lwa
Energy data
Energy efficiency class in average climates,
manual control
Electrical data
Rated voltage
Max. current consumption
Power consumption excl. preheating coil
Phases
Frequency
Power consumption
Power consumption excl. preheating coil
Versions
IP rating
Filter class
Dimensions
Height
Width
Depth
Weights
Weight
Connections
Air connector diameter
Condensate connection
Values
Air flow rate
Heat recovery level up to
Application range, extract air
Max. ambient temperature
Available external pressure, ventilation
dB(A)
42
A
V
A
A
230
1.48
1.48
1/N/PE
50
13-112
136
Hz
W
W
IP 30
ISO Coarse > 45 % (G3)
mm
mm
mm
600
560
290
kg
25
mm
mm
125
13
m³/h
%
°C
°C
Pa
50-180
90
15 - 30
60
160
m
LWZ 70 E
233851
2000
Further details
Maximum altitude for installation
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.
www.stiebel-eltron.com
LWZ 70 E | 23
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=bjcdfa>
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 9442
A 319235-41247-9450
B 314250-41247-9448
STIEBEL ELTRON Australia Pty. Ltd.
294 Salmon 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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