STIEBEL ELTRON VCR 180 MC Instruction Manual

OPERATION AND INSTALLATION
Central ventilation unit with heat recovery
» VCR 180 MC

2| VCR 180 MC www.stiebel-eltron.com
CONTENTS
SPECIAL INFORMATION
OPERATION
1. General information �����������������������������������������3
1.1 Safety instructions����������������������������������������������� 3
1.2 Other symbols in this documentation ����������������������� 3
1.3 Information on the appliance ��������������������������������� 4
1.4 Standardised output data �������������������������������������� 4
1.5 Units of measurement ������������������������������������������ 4
2. Safety����������������������������������������������������������4
2.1 Intended use������������������������������������������������������ 4
2.2 General safety instructions ������������������������������������ 4
2.3 Test symbols ������������������������������������������������������ 4
3. Appliance description ���������������������������������������4
4. Settings �������������������������������������������������������5
4.1 Switching the appliance on������������������������������������ 5
4.2 Programming unit ����������������������������������������������� 5
4.3 Selecting the fan stage ����������������������������������������� 6
4.4 Activating time programs �������������������������������������� 6
4.5 Menu ��������������������������������������������������������������� 6
 P3: No function��������������������������������������������������� 6
 P4: Reset filter���������������������������������������������������� 6
 P28: Enable fan��������������������������������������������������� 6
 P80: Day ����������������������������������������������������������� 6
 P83: Mode of backlighting ������������������������������������� 7
 P84: Illumination duration ������������������������������������� 7
 P85: Lower standard display ���������������������������������� 7
 Pro ������������������������������������������������������������������ 7
 Cod������������������������������������������������������������������ 8
4.6 Switching off the appliance������������������������������������ 8
5. Maintenance, cleaning and care����������������������������8
6. Troubleshooting ����������������������������������������������8
INSTALLATION
7. Safety����������������������������������������������������������9
7.1 General safety instructions ������������������������������������ 9
7.2 Instructions, standards and regulations �������������������� 9
7.3 Operation of the appliance in buildings with
combustion equipment ����������������������������������������� 9
8. Appliance description ������������������������������������� 10
8.1 Standard delivery����������������������������������������������� 10
8.2 Accessories������������������������������������������������������� 10
9. Preparation ������������������������������������������������� 10
9.1 Storage������������������������������������������������������������ 10
9.2 Installation site�������������������������������������������������� 10
9.3 Transport ��������������������������������������������������������� 10
10. Installation�������������������������������������������������� 11
10.1 Mounting the appliance ��������������������������������������� 11
10.2 Connecting the condensate drain hose��������������������� 11
10.3 Air ducts ���������������������������������������������������������� 11
10.4 Electrical connection������������������������������������������� 12
10.5 Overflow apertures��������������������������������������������� 13
11. Commissioning ��������������������������������������������� 13
11.1 Initial start-up��������������������������������������������������� 13
11.2 Recommissioning����������������������������������������������� 13
12. Settings ����������������������������������������������������� 14
12.1 Parameter �������������������������������������������������������� 14
 P14: Supply air flow rate offset ������������������������������ 14
 P15: Humidity protection interval ��������������������������� 14
 P16: Start-up time for humidity measurement ����������� 14
 P29: Appliance type �������������������������������������������� 14
 P31: Enabling of humidity-dependent flow rate control 14
 P70: Delete fault list �������������������������������������������� 14
12.2 Actual values ���������������������������������������������������� 14
12.3 Code ��������������������������������������������������������������� 15
 Cod����������������������������������������������������������������� 15
13. Appliance shutdown ��������������������������������������� 15
14. Maintenance ������������������������������������������������ 15
15. Troubleshooting �������������������������������������������� 17
16. Disposal ����������������������������������������������������� 17
17. Specification ������������������������������������������������ 18
17.1 Dimensions and connections ��������������������������������� 18
17.2 Fan diagram ����������������������������������������������������� 19
17.3 Wiring diagram ������������������������������������������������� 20
17.4 Data table �������������������������������������������������������� 21
GUARANTEE
ENVIRONMENT AND RECYCLING
FILTER INSPECTION LOG

SPECIAL INFORMATION | OPERATION
General information
www.stiebel-eltron.com VCR 180 MC | 3
SPECIAL INFORMATION
- 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 ex-
perience 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. Cleaning and user maintenance
must not be carried out by children without
supervision.
- Observe all applicable national and regional reg-
ulations and instructions.
- The appliance is not approved for outdoor
installation.
- You must not install the appliance in safety zones
0, 1 and 2. The safety zones are defined in the
IEC60364-7-701 standard.
- Maintain the minimum clearances. See chapter
"Preparations/ Installation site".
- Fix the appliance in position as described in
chapter "Installation/ Preparations".
- If the appliance is permanently connected to the
power supply, ensure that the appliance can be
separated from the power supply by an isolator
that disconnects all poles with at least 3mm con-
tact separation.
- Observe the fuse protection required for the ap-
pliance (see chapter "Specification/ Data table").
- For the power cable, connections and connecting
cables to external control equipment, see chapter
"Electrical connection" and the wiring diagram in
chapter "Specification".
OPERATION
1. General information
The chapters "Special information" and "Operation" are intended
for both users and qualified contractors. The chapter "Installation"
is intended for qualified contractors.
Note
Read these instructions carefully before using the appli-
ance 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
!
KEYWORD Type of risk
Here, possible consequences are listed that may result
from failure to observe the safety instructions.
 Steps to prevent the risk are listed.
1.1.2 Symbols, type of risk
Symbol Type of risk
Injury
Electrocution
Burns
(burns, scalding)
1.1.3 Keywords
KEYWORD Meaning
DANGER Failure to observe this information will result in serious
injury or death.
WARNING Failure to observe this information may result in serious
injury or death.
CAUTION Failure to observe this information may result in non-seri-
ous or minor injury.
1.2 Other symbols in this documentation
Note
General information is identified by the adjacent symbol.
 Read these texts carefully.
Symbol Meaning
Material losses
(appliance damage, consequential losses and environmen-
tal pollution)
Appliance disposal
!
!

OPERATION
Safety
4| VCR 180 MC www.stiebel-eltron.com
 This symbol indicates that you have to do something. The ac-
tion you need to take is described step by step.
1.3 Information on the appliance
Symbol Meaning
Outdoor air
Exhaust air
Extract air
Supply air
Filters
Not relevant
Cross-countercurrent heat exchanger
Fan
1.4 Standardised output data
Information on determining and interpreting the specified stand-
ardised output data
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. Additional 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.
1.5 Units of measurement
Note
All measurements are given in mm unless stated oth-
erwise.
2. Safety
2.1 Intended use
The appliance is designed as a mechanical ventilation unit with
central supply and extract air routing.
The appliance is intended for domestic use. It can be used safely
by untrained persons. The appliance can also be used in non-do-
mestic 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 inappro-
priate. Observation of these instructions and of the instructions
for any accessories used is also part of the correct use of this
appliance.
It is deemed inappropriate to:
- Use extract air containing grease, explosive gases, dust or
adhesive aerosols
- Connect cooker hoods or vented tumble dryers to the ventila-
tion system
Never adjust the settings of supply and extract air vents inside
the rooms. The supply and extract air valves have been adjusted
during commissioning.
2.2 General safety instructions
!
WARNING Injury
The appliance may be used by children over 8 years of
age and persons with reduced physical, sensory or men-
tal 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. Cleaning and user maintenance must
not be carried out by children without supervision.
WARNING Injury
The discharged cold air can cause condensation to be
formed in the vicinity of the air discharge.
 Ensure that no risk of slipping due to wet conditions
or ice formation occurs on adjacent footpaths and
driveways at low temperatures.
2.3 Test symbols
See type plate on the appliance.
3. Appliance description
The appliance draws in outdoor air with a fan. A second fan ex-
tracts stale air from the rooms containing odours or moisture,
e.g. kitchen, bathroom, WC. Extract air and outdoor air are routed
through separate air ducts. Extract air and outdoor air are filtered
by separate filters.

OPERATION
Settings
www.stiebel-eltron.com VCR 180 MC | 5
The extract air and outdoor air flow through a cross-countercur-
rent heat exchanger. The outdoor air absorbs heat taken from the
extract air. This enables a large proportion of thermal energy to
be recovered.
The air flow rate is preset for each fan stage by the qualified con-
tractor during commissioning. Constant flow rate control ensures
that the air flow rates through the supply air and extract air fans
are achieved irrespective of the duct pressure.
Stage Display
Ventilation
for humid-
ity protec-
tion
0 "Power"
symbol and
digit0
Necessary ventilation for ensuring that the
building structure is protected under normal
conditions of use with somewhat reduced
moisture loads, e.g. during temporary ab-
sence of users and no drying of washing in
the residential unit.
Reduced
ventilation
1 "Fan" sym-
bol and
digit1
Reduced ventilation is the ventilation neces-
sary to meet hygiene standards and ensure
protection of the building structure (moisture
level) under standard conditions of use with
partially reduced moisture and pollutant
loads, e.g. as a result of intermittent user
absence.
Standard
ventilation
2 "Fan" sym-
bol and
digit2
Standard ventilation is the ventilation neces-
sary to meet hygiene standards and ensure
protection of the building structure when
users are present.
Intensive
ventilation
3 “Fan”
symbol and
digit3
Intensive ventilation is increased ventilation
with a higher flow rate to reduce load peaks,
e.g. for rapid ventilation during or after a
party. You can switch on intensive ventilation
with the "intensive ventilation" button or with
an optionally connectible external switch.
4. Settings
4.1 Switching the appliance on
The appliance has no ON/OFF switch. When the appliance is sup-
plied with power, it is in operation.
4.2 Programming unit
D0000040582
1
4
5
6
7
3
8
2
1 Upper display
2 Lower display
3 Touch-Wheel
4 "MENU" button
5 "HOME" button
6 "OK" button
7 "Intensive ventilation" button
8 "Intensive ventilation" indicator
4.2.1 Controls
Control Description
"MENU"
button
Press this button for approx. one second to call up the menu
from the standard display.
Within the menu, press this button to return to the beginning of
the menu. Parameter P1 is displayed.
When setting a parameter value, press this button to exit set-
ting of the parameter. Any changes made will not be saved.
"OK" button
In order to set the parameter, you must first make it editable by
pressing the "OK" button. Then you can change the value with
the Touch-Wheel.
Once you have set the parameter, confirm your entry with the
"OK" button.
"HOME"
button
Calls up the standard display
"Intensive
ventilation"
button
Use this button to switch the appliance to intensive ventilation.
You can set the runtime for intensive ventilation in parameter
P2. Once this runtime has expired, the appliance returns to the
previously applicable fan stage.
Touch-Wheel
From the home screen, you can use the Touch-Wheel to select
fan stages 0, 1 and 2, and activate the time programs. The
"time" symbol indicates that time programs are activated.
Use the Touch-Wheel to select a parameter or value in the
menu.
If you turn the Touch-Wheel quickly, the increment size changes
after a while.
Function block
Press the "HOME" and "OK" buttons simultaneously to activate the
function block. The "padlock" symbol appears. Then you can wipe
the programming unit clean without inadvertently changing any
settings. Press the "HOME" and "OK" buttons simultaneously for
two seconds to deactivate the function block.
4.2.2 Display
If no user action occurs within the time selected in the illumi-
nation duration parameter, the display backlighting switches off
and the standard display appears. Press any button to switch the
background lighting on again.
Symbol Description
Power: This symbol indicates that the appliance is switched on and
the fans are operating in "humidity protection" mode.
Time: This symbol indicates that the appliance is operating in time
program mode. Depending on the program, the appliance is oper-
ated at different fan stages.
Fan: This symbol, with the associated digit, indicates the fan stage
at which the appliance is currently running.
Not relevant
This symbol is displayed when the function block is activated. Press
the "HOME" and "OK" buttons simultaneously for two seconds to
deactivate the function block.
Filters: Change the filter when this symbol appears.
Not relevant
Service/fault: The "service/fault" symbol illuminates permanently
in the event of faults that do not impair the basic function of the
appliance. The "service/fault" symbol flashes if a serious fault has
occurred. Call your qualified contractor.

OPERATION
Settings
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4.3 Selecting the fan stage
From the home screen, you can use the Touch-Wheel to select fan
stages 0, 1 and 2. The set value is accepted without you having to
press a button to confirm it.
You cannot activate intensive ventilation with the Touch-Wheel.
To switch on intensive ventilation, press the "intensive ventilation"
button for approx. one second. When intensive ventilation is acti-
vated, the "intensive ventilation" indicator illuminates.
If you set fan stage 0, the appliance switches to a 24 hour dormant
phase. The humidity protection control unit only starts after this.
The qualified contractor can configure the humidity protection
control unit with parameters.
4.4 Activating time programs
The "time" symbol indicates that time programs are activated.
If the time programs are not activated, turn the Touch-Wheel
clockwise to switch from the home screen. After fan stage2, the
fan stage set in the time program appears along with the "time"
symbol.
Note
If you switch the appliance to time program operation,
time programs must be entered in the "prog" menu. Oth-
erwise the appliance continues to run without a time limit
in set fan stage 2.
Enter the time program settings in the menu.
At times where there is no time program defined, the appliance
runs in set fan stage 2.
4.5 Menu
Display Description
P1 - Pxx Parameter
I1 - Ixx Actual values
Pro Programs
Cod Entry of the code for unlocking protected parameters and actual
values
 To access the parameters, press the "MENU" button.
The "HOME" button takes you to the standard display. If you have
not changed any settings for a while, the appliance automatically
switches back to the standard display.
4.5.1 Parameter
Description Unit Min. Max. Options
P1 No function
P2 This parameter defines the
runtime for intensive ven-
tilation. After this time has
expired, the appliance returns
to the previously applicable
fan stage.
min 1 240
P3 No function
P4 Reset filter 1 | 0
P28 Enable fan On| OFF
P80 Day 1 - 7
P81 Time 00:00 23:59
P82 Level of lighting 2 10
P83 Mode of backlighting Auto | On| OFF
P84 Illumination duration s 1 500
P85 Lower standard display OFF | Time| Set room
temperature| Extract
air temp.| Extract air
humidity
In order to set the parameter, you must first make it editable by
pressing the "OK" button. Then you can change the value with
the Touch-Wheel. If you do not press the "OK" button to make the
parameter editable, activating the Touch-Wheel causes the next
parameter to be displayed.
Press the "OK" button to save the set value for a parameter. If you
do not confirm the parameter change with the "OK" button, your
change will be lost.
P3: No function
This parameter has no function for this appliance. This parameter
must not be changed. Factory setting: 0
P4: Reset filter
 Set this parameter to 1 after changing the filters. The appli-
ance resets the filter runtime to 0. This parameter is auto-
matically reset to 0.
P28: Enable fan
You can switch off the fans at any time via the programming unit
menu, e.g. to deactivate ventilation if there is a fire.
Effect
OFF The fans are deactivated. "OFF" and the fan icon flash on the display.
On The fans are enabled.
P80: Day
1Monday
2Tuesday
3Wednesday
4Thursday
5Friday
6Saturday
7Sunday

OPERATION
Settings
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P83: Mode of backlighting
Effect
On Backlighting switched on
OFF Backlighting switched off
Auto If no user action occurs within the time selected in the illumination du-
ration parameter, the display backlighting switches off and the standard
display appears.
P84: Illumination duration
If no user action occurs within the time selected in the illumination
duration parameter, the display backlighting switches off and the
standard display appears.
P85: Lower standard display
Use this parameter to define what is displayed in the lower section
of the standard display. If the appliance detects a fault, the fault is
indicated in the lower section of the standard display.
4.5.2 Actual values
Description Unit
I1 No function
I2 Extract air temperature °C
I3 Relative humidity of extract air %
I4 Filter service life h
I5 Appliance software version
I6 Unit software patch
I7 Terminal device serial number
I8 Programming unit software version
I70-79 Fault memory
Faults detected by the appliance are stored in actual values I70
to I79.
The latest fault is stored in I70; the oldest in I79. If no faults are
entered, dashes are shown. The latest fault is also shown in the
lower section of the standard display. Possible faults are listed for
qualified contractors in the "Troubleshooting" chapter.
4.5.3 Programs
Pro
The appliance offers the option to set 21 time programs. Switch
between the time programs using the Touch-Wheel. Press the "OK"
button to switch to setting a time program.
Time pro-
gram x
x.1 x.2 x.3 x.4
Day or group of
days
Fan stage Start time Stop time
 1
 2
 3
 4
 5
 6
 7
 8
 9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
Setting a time program begins with selecting a day of the week or
a group of days. Press "OK". Set the day using the Touch-Wheel.
Confirm with the "OK" button.
Use the Touch-Wheel to switch to setting the fan stage. Press
"OK". Set the fan stage in which the appliance runs when the
time program takes effect using the Touch-Wheel. Confirm with
the "OK" button.
Note
You cannot switch on fan stage3 with time programs.
Use the Touch-Wheel to switch to setting the start time. Press
"OK". Set the start time of the respective time program using the
Touch-Wheel. Confirm with the "OK" button.
Use the Touch-Wheel to switch to setting the stop time. Press
"OK". Set the stop time of the respective time program using the
Touch-Wheel. Confirm with the "OK" button.
To delete a time program, go to the menu item where the day or
group of days is selected for the respective time program. Turn the
Touch-Wheel anti-clockwise until the day disappears and dashes
appear in the lower section of the display.
Note
In the case of overlapping time programs, the program
with the highest number takes priority.

OPERATION
Maintenance, cleaning and care
8| VCR 180 MC www.stiebel-eltron.com
Note
At times where there is no time program defined, the
appliance runs in set fan stage 2.
Example
Time scale Stage
Monday - Friday 06:00 - 22:00 2
22:00 - 06:00 1
Saturday, Sunday 07:00 - 23:00 2
23:00 - 07:00 1
xx.1 x.2 x.3 x.4
Day or group of days Fan stage Start time Stop time
 11/2/3/4/5 1 22:00 00:00
 21/2/3/4/5 1 00:00 06:00
 36/7 1 23:00 00:00
 46/7 1 00:00 07:00
4.5.4 Code
Cod
You can use this menu item to enable actual values and parame-
ters, which are reserved for qualified contractors.
Options Effect
A0 The only parameters displayed are those that have been released
for the appliance user and can therefore be accessed without a
code.
A1 Parameters for qualified contractors
A2 Parameters for service department
A1 or A2 is shown on the display when you enter the correct
four-digit code.
If you switch to the actual values or parameters, you see the en-
abled parameters.
Note
After entering the code, switch to the menu by pressing
the "MENU" button. If you first switch to the standard
display by pressing the "HOME" button, the parameter
block is reactivated.
4.6 Switching off the appliance
!
Material losses
If you interrupt the power supply to the appliance, check
that humidity protection is ensured for the building.
The appliance has no ON/OFF switch. Disconnect the power supply
at the fuse/MCB in the domestic distribution board.
5. Maintenance, cleaning and care
 Never use abrasive or corrosive cleaning agents. A damp
cloth is sufficient for cleaning the appliance.
6. Troubleshooting
Faults detected by the appliance are stored in actual values I70 to
I79. The latest fault is always stored in l70. The latest fault is also
shown in the lower section of the standard display.
If you cannot remedy the fault, contact 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 control panel on the side of the appliance.

INSTALLATION
Safety
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INSTALLATION
7. Safety
Only a qualified contractor should carry out installation, commis-
sioning, 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.
WARNING Burns
In connection with the fire prevention regulations con-
cerning 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.
7.3 Operation of the appliance in buildings with
combustion equipment
The term "combustion equipment" used below includes, for exam-
ple, 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 com-
bustion 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 ven-
tilation 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.
Simultaneous operation
For simultaneous operation of combustion equipment and a me-
chanical ventilation system, we recommend choosing approved
room sealed combustion equipment (in Germany, with DIBt ap-
proval).
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 pos-
sible negative pressure in the room.
The ventilation unit may only be operated in combination with
intrinsically safe combustion equipment. This combustion equip-
ment 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 con-
nected 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 connec-
tion piece to the chimney and the room where the combus-
tion equipment is installed
- Possibility of matching the shutdown value for the differential
pressure to the minimum draught requirement for the com-
bustion 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 un-
wanted 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.
Acceptance must be carried out by a specialist. In case of doubt,
you must involve an independent expert in the acceptance pro-
cedure.

INSTALLATION
Appliance description
10 | VCR 180 MC www.stiebel-eltron.com
7.3.3 Maintenance
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 rele-
vant qualified contractor responsible must prove that there is a
sufficient flow of combustion air.
8. Appliance description
8.1 Standard delivery
The following are delivered with the appliance:
- Hardwired programming unit for wall mounting on finished
walls, with adaptor cable
- Anti-vibration mounts
8.2 Accessories
You can obtain ventilation pipes, extract air and supply air vents
and similar accessories from us.
9. Preparation
9.1 Storage
!
Material losses
Never store the appliance in dusty places.
9.2 Installation site
WARNING Electrocution
You must not install the appliance in safety zones 0, 1
and 2. The safety zones are defined in the IEC60364-7-
701 standard.
!
Material losses
The appliance is not approved for outdoor installation.
!
Material losses
Check whether the ceiling can bear the weight of the
appliance.
!
Material losses
The installation room must be free from the risk of frost.
Ensure the appliance is level after installation.
The installation room must have an adequate condensate drain
with siphon.
Minimum clearances
≥20
≥10 ≥200
≥400 ≥400
D0000086166
≥300
M8
D0000086158
The appliance must be accessible from below for changing filters
and maintenance purposes. Mount a cover (600 x 1200mm) be-
neath the appliance or design the suspended ceiling in such a way
that it is removable under the appliance.
9.3 Transport
!
Material losses
If possible, transport the appliance to the installation lo-
cation in its original packaging.
If the appliance is transported without packing and with-
out using a pallet, its outer casing may be damaged.
Make sure that no objects drill through the outer enve-
lope of the appliance.
!
Material losses
Never use the air connections as handles for carrying
the appliance.

INSTALLATION
Installation
www.stiebel-eltron.com VCR 180 MC | 11
10. Installation
WARNING Electrocution
Do not install the appliance if it is damaged and there is
a risk that live components could be touched.
 Check the appliance for external damage.
!
Material losses
 Make sure that there are no sharp objects at the in-
stallation location that could drill through the outer
envelope of the appliance.
10.1 Mounting the appliance
!
Material losses
 Check whether the ceiling can bear the weight of the
appliance.
!
Material losses
 Always install the appliance horizontally so that any
condensate arising can flow into the condensate
drain. The filter cassettes are located at the bottom
of the appliance.
Note
Install the appliance before mounting the ceiling panels
of the suspended ceiling.
Note
 When positioning the appliance, ensure there is
sufficient space to install the supply and extract air
ducts (see chapter "Preparations/ Specification/
Installation site/ Minimum clearances").
 Drill holes in the ceiling for mounting the appliance with
threaded pins or double ended screws.
 ???Screw the following parts on each threaded pin in the
order described.
23
4
5
7
1
6
1 Nut
2 Washer
3 Anti-vibration mounts
4 Anti-vibration mounts
5 Washer
6 Nut
7 Lock nut
 ???Hang the appliance so that the retainers of the appliance
are between the anti-vibration mounts.
 Level the appliance horizontally by turning the nuts to en-
sure that condensate can drain correctly. Use a spirit level to
check whether the appliance is level horizontally.
10.2 Connecting the condensate drain hose
!
Material losses
The weight of the condensate drain hose must not exert
a leverage effect on the "Condensate drain" connection.
This could cause the condensate drain connection to leak
or break off.
 Secure the condensate drain hose, e.g. to the ceiling.
!
Material losses
To ensure that condensate drains correctly, always lay
the condensate drain hose without any kinks. Lay the
condensate drain hose with a fall of at least 10%. Ensure
the appliance is level after installation.
The drain pipe may only contain one siphon. The con-
densate must be able to drain freely downstream of the
siphon.
The condensate must drain away via the domestic sewer
system. The pipes must not rise in the domestic sewer
system downstream of the siphon. The condensate drain
must be free from the risk of frost.
Note
Prevent air from being drawn in through the condensate
drain.
 Install the condensate drain hose in such a way as to
create a siphon with a water trap height of at least
60mm.
 Before connecting the condensate drain hose to the appli-
ance, pour water into the siphon.
 Push a condensate drain hose onto the condensate drain
connection.
 Prevent the condensate drain hose from slipping off the con-
densate drain connection, e.g. with a cable tie.
10.3 Air ducts
!
Material losses
Never link cooker hoods to the ventilation system.
!
Material losses
During installation, ensure that no metal swarf enters
the pipework. However, should this occur, remove this
debris, otherwise the fans may be damaged.
Install the air ducts using materials that can be obtained from us
or with commercially available folded spiral-seam tubes.

INSTALLATION
Installation
12 | VCR 180 MC www.stiebel-eltron.com
10.3.1 Insulation against condensation
!
Material losses
When warm air meets cold surfaces, condensation can
result.
 For outdoor air and exhaust air ducts, use vapour
proof thermally insulated pipes.
 If the supply and extract air ducts are routed
through unheated rooms, insulate these ducts as
well.
10.3.2 Connecting air ducts to the appliance
You can connect air ducts with two different diameters to the
appliance.
D0000080367
 Push the air duct onto the air connection.
D0000080369
 Secure the air duct at the appliance air duct connection with
self-adhesive aluminium sealing tape.
10.3.3 External wall ducts
Install the outdoor air intake into the building at 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 be-
tween the air intake and the air discharge.
10.3.4 Silencer
 Install a silencer in both the supply air duct and the extract
air duct. Install these silencers as close as possible to the ap-
pliance, so that noise is suppressed at an early stage.
We recommend installing additional silencers if required to avoid
sound transmission.
If a room with a high noise level needs to be ventilated, install
additional silencers upstream of this room to reduce sound trans-
mission to the neighbouring rooms.
Aspects such as carried voices and impact sound must also be
taken into consideration in the case of ducts embedded in con-
crete. Carried voices should be avoided by designing the duct with
separate branches to the vents. If necessary, insulate the supply air
ducts, e.g. if they are mounted outside the insulated wall panel.
10.3.5 Overflow apertures
Living rooms and bedrooms are only supplied with air. Air is only
extracted from rooms where odours and moisture are generated.
Ensure an unimpeded overflow and consequently air balancing.
Install ventilation grilles in internal doors or walls, or enlarge the
air gap beneath the door to ≥8mm.
10.3.6 Cleaning apertures
 Fit cleaning apertures when installing the air ducts, so
that the air ducts can be inspected and cleaned at regular
intervals.
10.3.7 Supply and extract air vents
Supply and extract air vents for the living space are available for
wall or ceiling mounting.
When venting the kitchen, ensure that the extract air vent is fitted
as far as possible from the cooker.
10.4 Electrical connection
WARNING Electrocution
Carry out all electrical connection and installation work
in accordance with national and regional regulations.
WARNING Electrocution
Before any work on the appliance, isolate the connecting
cables in the control panel.
WARNING Electrocution
Do not install the appliance if it is damaged and there is
a risk that live components could be touched.
 Check the appliance for external damage.
WARNING Electrocution
If the appliance is permanently connected to the power
supply, ensure that the appliance can be separated from
the power supply by an isolator that disconnects all poles
with at least 3mm contact separation.
!
Material losses
Observe the fuse protection required for the appliance
(see chapter "Specification/ Data table").
Note
For the power cable, connections and connecting cables
to external control equipment, see chapter "Electrical
connection" and the wiring diagram in chapter "Spec-
ification".

INSTALLATION
Commissioning
www.stiebel-eltron.com VCR 180 MC | 13
Mains Connection
X11
Remote Controller
Green
4
Brown
3
Yellow
2
White
1
339754-K41198
Electr. Connection
D0000086660
X11 Remote control (Safety extra low voltage)
1 White
2 Yellow
3 Brown
4 Green
Power supply
Use the plug on the power cable to connect the appliance to a
standard socket.
Programming unit
X11: Programming unit connection (Safety extra low voltage)
The programming unit is connected with an I²C bus. See program-
ming unit operating and installation instructions.
The programming unit is delivered with an adaptor cable whose
wires are marked with numbers. Connect the adaptor cable in
such a way that the same numbers are connected to one another.
Safety equipment for stove/fireplace operation
 Install the safety equipment in such a way that it interrupts
the appliance power supply when required.
10.5 Overflow apertures
Create suitable overflow apertures in the supply air area or over-
flow area.
11. Commissioning
!
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.
!
Material losses
Never operate the appliance without filters.
!
Material losses
Never operate the ventilation system if there are high lev-
els of dust inside the building or outside in the immediate
vicinity, as this could block the filter. Dust is created by
cutting tiles or working with plasterboard, for example.
11.1 Initial start-up
Enable fan
The fans are deactivated in the delivered condition.
 P28: Set the parameter to "On".
Setting air flow rates
 Use parameters P6 to P9 to set the air flow rates for the fan
stages.
Date
 Set the current day of the week.
P80 1Monday
2Tuesday
3Wednesday
4Thursday
5Friday
6Saturday
7Sunday
Time
 Set the current time.
P81 00:00 -23:59
11.2 Recommissioning
 Check whether filters are fitted in the appliance. Never oper-
ate the appliance without filters.
 Check whether the condensate drain hose is damaged or
kinked.

INSTALLATION
Settings
14 | VCR 180 MC www.stiebel-eltron.com
12. Settings
12.1 Parameter
Description Code Unit Min. Max. Options Stand-
ard
P1 No function A0 °C 528 20
P2 Intensive ventilation
runtime
A0 min 1 240 30
P3 No function This parameter
must not be
changed.
0
P4 Reset filter A0 0| 1 0
P6 Flow rate, stage0 A1 m³/h 50 100 50
P7 Flow rate, stage 1 A1 m³/h 70 120 90
P8 Flow rate, stage 2 A1 m³/h 90 140 125
P9 Flow rate, stage 3 A1 m³/h 110 180 180
P14 Supply air flow rate
offset
A1 m³/h -100 100 0
P15 Humidity protection
interval
A1 h 1 24 1
P16 Start-up time for hu-
midity measurement
A1 min 5 15 5
P17 Extract air humidity
limit
A1 % 5 95 65
P18 No function
P19 Filter change interval A1 d 1 365 90
P22 No function
P24 No function
P25 No function
P26 No function
P27 No function
P28 Enable fan A0 On| OFF On
P29 Appliance type A1 3
P30 No function
P31 Enabling of humid-
ity-dependent flow
rate control
A1 0| 1 0
P70 Delete fault list A1 0| 1 0
P80 Day A0 1 7
P81 Time A0 00:00 23:59
P82 Level of lighting A0 2 10 10
P83 Mode of backlighting A0 Auto | On| OFF Auto
P84 Illumination duration A0 s 10 500 60
P85 Lower standard dis-
play
A0 OFF | Time| Set
room temper-
ature| Extract
air temp.|
Extract air hu-
midity
OFF
P28: Delivered condition OFF
P14: Supply air flow rate offset
Use this parameter to adjust the supply air flow rate during com-
missioning. The offset relates to standard ventilation. The offset
is converted internally as a percentage for the other fan stages.
Example
- Nominal flow rate (stage2): 125m³/h
- Offset: 25m³/h
Stage Set
flow
rate
Off-
set
Set flow rate
+ offset
Offset
factor
Internal set flow rate
= set flow rate* off-
set factor
050 50*1.2 = 60
190 90*1.2 = 108
2125 25 125+25 = 150 150/125 = 1.2 125*1.2 = 150
3180 180*1.2 = 216
P15: Humidity protection interval
If you set fan stage 0, the appliance switches to a 24 hour dormant
phase. The humidity protection control unit only starts after this.
The appliance measures the humidity of the extract air for the
time set in P16. The appliance compares the last measured value
with the limit value set in P17. If the limit value is exceeded, the
appliance starts to ventilate. The appliance stops the ventilation
once the limit value is fallen below. At this point, the humidity
protection interval restarts, at the end of which the moisture is
measured.
P16: Start-up time for humidity measurement
The appliance measures the humidity of the extract air for the time
set in P16. The appliance compares the last measured value with
the limit value set in P17.
P29: Appliance type
This parameter is set at the factory. The parameter can only be set
after the controller assembly has been replaced.
P31: Enabling of humidity-dependent flow rate
control
With humidity-dependent flow rate control, the air flow rate is
increased or decreased depending on the humidity level.
P70: Delete fault list
To delete the fault list, set this parameter to 1. Press the "OK"
button to confirm. Afterwards, 0 is displayed again and the fault
list is deleted.
12.2 Actual values
Description Unit
I1 No function
I2 Extract air temperature °C
I3 Relative humidity of extract air %
I4 Filter service life h
I5 Appliance software version
I6 Unit software patch
I7 Terminal device serial number
I8 Programming unit software version
I9 Outdoor air temperature °C
I10 Supply air temperature °C
I12 Relative humidity of outdoor air %
I13 Extract air dew point °C
I15 Supply air fan drive output %
I17 Exhaust air fan drive output %
I19 No function
I20 Ventilation unit operating time d

INSTALLATION
Appliance shutdown
www.stiebel-eltron.com VCR 180 MC | 15
Description Unit
I21 Fan operating time d
I23 Fan speed, supply air fan rpm
I24 Fan speed, exhaust air fan rpm
I70-79 Fault
12.3 Code
Cod
Enter 1000 to enable actual values and parameters, which are
reserved for qualified contractors. "A1" is shown on the display
when this is entered correctly.
13. Appliance shutdown
We recommend running the appliance in fan stage1, even during
prolonged absence.
!
Material losses
If you interrupt the power supply to the appliance, check
that humidity protection is ensured for the building.
If the appliance needs to be taken out of use for an extended
period, disconnect it from the power supply.
 Replace the filters.
14. Maintenance
WARNING Electrocution
Disconnect the appliance from the power supply before
carrying out work inside the appliance.
Activity Maintenance inter-
val (in years)
Filters ¼
Cleaning the condensate pan 1
Condensate drain 1
Clean cross-countercurrent heat exchanger 3
Fan 3
Air ducts 3
 Open the cover beneath the appliance or remove the sus-
pended ceiling panels under the appliance.
 Interrupt the power supply.
Filters
!
Material losses
Never operate the appliance without filters.
!
Material losses
Operate the appliance with at least the recommended
filter class. Ensure that filters are fitted precisely so that
they can fulfil their function.
 Inspect the filters for the first time three months after com-
missioning the appliance.
The "filter" symbol appears after a time set by the qualified con-
tractor. The qualified contractor can lengthen or shorten the inter-
val for inspecting filters depending on the level of contamination.
If the "filter" symbol illuminates, check the filters.
Change the filters if the surface is covered completely in dirt or
the filter is discoloured throughout.
Change the filters at least every 12 months.
1.
2.
D0000086145
 Undo the screw in the cover. Do not let it fall.
 Remove the cover.
D0000068468
2
1
3
45
1 Wing screw
2 Filter cassette, extract air filter
3 Extract air filter
4 Filter cassette, outdoor air filter
5 Outdoor air filter
 Undo the wing screw on the filter cassette of the extract air
filter by turning the screw anti-clockwise.
 Remove the filter cassette from the appliance.
Part
number
Product name Description Classification
in accordance
with ISO16890
Quan-
tity
337409 FILTER COARSE 60
G4 SUPPLY AIR VCR
180 ECN
Coarse particle
filter mat
ISO Coarse > 60 %
(G4)
2
 If necessary, place a new filter in the filter cassette.

INSTALLATION
Maintenance
16 | VCR 180 MC www.stiebel-eltron.com
!
Material losses
Operate the appliance with at least the recommended
filter class. Ensure that filters are fitted precisely so that
they can fulfil their function.
 Ensure that the direction of air flow through the filter is
correct.
G4, M5, F7: The direction of flow is indicated by an arrow on the
side of the filter.
 Push the filter cassette into the appliance. Ensure that the
filter cassette is installed in the intended position. The arrow
on the filter cassette and the arrow on the appliance must
point in the same direction.
 To secure the filter cassette, turn the wing screw clockwise.
 Undo the wing screw on the filter cassette of the outdoor air
filter by turning the screw anti-clockwise.
 Remove the filter cassette from the appliance.
 If necessary, place a new filter in the filter cassette.
 Push the filter cassette into the appliance. Ensure that the
filter cassette is installed in the intended position. The arrow
on the filter cassette and the arrow on the appliance must
point in the same direction.
 To secure the filter cassette, turn the wing screw clockwise.
 Make a note of the filter change date.
Note
 Log the filter inspection in the appendix of this man-
ual.
 Fit the cover.
 Switch on the power supply to the appliance.
 Order new filters in good time or purchase a filter
subscription.
Note
If other filters are installed in the system, e.g. filters in the
extract air vents or a filter box, also perform the inspec-
tion there and change the filter(s) if necessary.
Condensate pan
D0000086137
2
1
1 Cover
2Condensate pan
 Undo the screws in the cover. Do not let it fall.
 Remove the cover.
 Undo the fixing screws of the condensate pan.
 Remove the condensate pan from the appliance carefully as it
may still contain water.
Condensate drain
!
Material losses
A blocked condensate drain can cause appliance faults.
If the condensate drain is blocked, condensate can escape
from the appliance in an uncontrolled manner and cause
water damage.
Cross-countercurrent heat exchanger
D0000087012
1
1 Wedge
 Remove the wedge from between the appliance body and the
cross-countercurrent heat exchanger.
 Carefully remove the heat exchanger from the unit. Do not let
it fall. Avoid damaging the EPS parts in the appliance.
 Use a commercially available vacuum cleaner to remove dust
and other loose dirt particles from the intake and discharge
surfaces.
 If required, clean the heat exchanger with warm water
(max.55 °C) and a commercially available detergent. Do not
use solvents.
 Flush the heat exchanger with water.
Fan
You can clean the fans without disconnecting the cables leading
to the fans. Nevertheless, we recommend removing the control
panel cover. Then you can unplug the control cable and power
cable from the printed circuit board.
 Undo the screws securing the fans.
 Clean the fans with a soft brush.

INSTALLATION
Troubleshooting
www.stiebel-eltron.com VCR 180 MC | 17
Refitting the components
 Push the fan units back into the appliance.
 Reconnect the fan cables.
 Fit the control panel cover.
 Slide the cross-countercurrent heat exchanger back into the
appliance.
 Push the wedge back in again.
 Fit the condensate pan.
 Fit the cover.
Air ducts
Air ducts must be checked at regular intervals and cleaned if nec-
essary. Disconnect the air ducts from the appliance or carry out in-
spection and cleaning through the extract air and supply air vents.
15. Troubleshooting
WARNING Electrocution
Disconnect the power supply by unplugging the appli-
ance from the mains before carrying out work inside
the appliance.
Fault Effect Remedy
--- No fault pres-
ent
E8 No humidity
value for the
extract air
The unit cannot provide
humidity protection.
Isolate the appliance from the
power supply. Check the sen-
sor cable. Replace the sensor.
E10 No tempera-
ture value for
the extract air
Isolate the appliance from
the power supply. Check the
sensor cable.
E11 No tempera-
ture value for
the outdoor air
. Isolate the appliance from
the power supply. Check the
sensor cable.
E16 The conden-
sate float
switch has
responded.
The unit switches off the
fans.
Check the condensate drain.
Check the cable for break-
ages.
E17 Outdoor air
temperature
sensor short
circuit
No control to the comfort
temperature required for
passive houses of at least
16.5°C in the supply air
Isolate the appliance from
the power supply. Check the
sensor cable.
E18 Outdoor air
temperature
sensor lead
break
No control to the comfort
temperature required for
passive houses of at least
16.5°C in the supply air
Isolate the appliance from
the power supply. Check the
sensor cable.
E101 Supply air fan The unit does not receive
any speed feedback from
the fan. There is no effect
on the flow rate control
mode.
Isolate the appliance from
the power supply. Check the
cabling. Check the PWM con-
trol signal that the electronic
assembly sends to the fan.
Check the speed signal that
the fan sends to the electronic
assembly. Replace the fan.
E102 Exhaust air fan The unit does not receive
any speed feedback from
the fan. There is no effect
on the flow rate control
mode.
Isolate the appliance from
the power supply. Check the
cabling. Check the PWM con-
trol signal that the electronic
assembly sends to the fan.
Check the speed signal that
the fan sends to the electronic
assembly. Replace the fan.
E105 Maximum
outdoor air
temperature
exceeded
The high limit safety cut-
out may respond.
Isolate the appliance from the
power supply. Check the air
flow rate. Check the triac for
continuity. Check the sensor
cable.
Fault Effect Remedy
E201 No RTC com-
munication
(RTC = re-
al-time clock)
Time-dependent program
sequences are disrupted.
Isolate the appliance from the
power supply. Replace the
electronic assembly.
E202 No RTC pulse Time-dependent program
sequences are disrupted.
Isolate the appliance from the
power supply. Replace the
electronic assembly.
E203 Sensor voltage
incorrect
The unit controls the fans
with the maximum value
of the currently set fan
stage. The unit cannot
provide humidity pro-
tection.
Isolate the appliance from the
power supply. Check the sen-
sor voltage after disconnect-
ing one of the following sen-
sor plugs: X15, X16, X23, X24.
Replace the sensor. Replace
the electronic assembly.
E204 Supply air
shutdown
If the supply air tempera-
ture falls below 5°C, the
fan is switched off.
Check the triac for continuity.
E205 Maximum
outdoor air
temperature
exceeded
The high limit safety cut-
out may respond.
Isolate the appliance from
the power supply. Check the
triac for continuity. Check the
sensor cable.
If fault E16 is displayed, faults E101 and E102 are also displayed
in the fault memory.
16. Disposal
Removal
WARNING Electrocution
Disconnect the appliance from the power supply.
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

INSTALLATION
Specication
18 | VCR 180 MC www.stiebel-eltron.com
17. Specification
17.1 Dimensions and connections
VCR 180 MC
d45 b07
g04
g03
g05
g06
519
576
121
391
137
116
815
1113
161
391
137
116
24747
D0000086124
VCR 180 MC
b07 Electrical connection
d45 Condensate drain Diameter mm 27
g03 Outdoor air Diameter DN 150
g04 Exhaust air Diameter DN 150
g05 Extract air Diameter DN 150
g06 Supply air Diameter DN 150

INSTALLATION
Specication
www.stiebel-eltron.com VCR 180 MC | 19
17.2 Fan diagram
The graph shows the pressure drop for examples of air distribution systems.
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
40 60 80 100 120 140 160 180 200
1
2
D0000069564
Application range
X Air flow rate [m³/h]
Y Average value, static pressure [Pa]
1 Maximum fan curve
2 System curves

INSTALLATION
Specication
20 | VCR 180 MC www.stiebel-eltron.com
17.3 Wiring diagram
X1 Anschluss Netz
X2 Nicht belegt
X3 Netzleitung Zuluftluefter
X4 Netzleitung Fortluftluefter
X5 Nicht belegt
X6 Interner Schwimmerschalter
X7 Nicht belegt
X8 Nicht belegt
X9 Nicht belegt
X10 Nicht belegt
X11 Fernbedienung
X12 Nicht belegt
X13 Nicht belegt
X14 Nicht belegt
X15 Sensor Temp. & Luftf. AUL
X16 Sensor Temp. & Luftf. ABL
X17 Nicht belegt
X18 Ohne Funktion
X19 Ohne Funktion
X20 Ohne Funktion
X21 Steuerleitung Fortluftluefter
X22 Steuerleitung Zuluftluefter
X23 Nicht belegt
X24 Nicht belegt
P1 Nicht belegt
D0000085399
X3
X22
X7
X23
X24
X4
X21
X5 X6
X8
X9 X10
X16X15 X17
X12 X14
X11 X18
X19 X20
X13
X2 X1
L N PE
M2
M1
L (BN)
L (BN)
N (BU)
N (BU)
1 2 34
1 2 34
1
11
1
1
1111
N L
111 1 1
1 1 1 1 1
11
N
PE
L
N
PE
L
~ 240 V
(GN)(BN) (YE)
(WH)
%
%
D0000085399
X1 Mains power connection
X3 Supply air fan power cable
X4 Exhaust air fan power cable
X6 Internal float switch
X7 Outdoor air temperature sensor
X11 Remote control
X15 Outdoor air temperature and humidity sensor
X16 Extract air temperature and humidity sensor
X21 Exhaust air fan control cable
X22 Supply air fan control cable