Nibe ERS S10 User guide

IHB EN 2014-2
531299
INSTALLER MANUAL
Ventilation heat exchanger
NIBE ERS S10-400
LEK

41 Important information
4Safety information
4Serial number
5Recovery
6Inspection of the installation
72 Delivery and handling
7Transport and storage
7Assembly
7Supplied components
8Removing the covers
8Removing parts of the insulation
93 The ventilation heat exchanger design
10Pipe connections
10Sensors etc.
10Electrical components
10Ventilation
10Miscellaneous
114 Pipe and ventilation connections
11Mounting
12Condensation water drain
12General ventilation connections
13Ventilation flow
13Adjusting ventilation
13Dimension and ventilation connections
13Preheating outdoor air
145 Electrical connection
14Connecting to main product
15Outside air sensor
166 Commissioning and adjusting
16Preparations
16Filling
16Start-up and inspection
177 Program settings
17Start guide
17Menu system
198 Disturbances in comfort
19Troubleshooting
209 Accessories
2110 Technical data
21Dimensions ERS S10
22Technical specifications
22Energy labelling
23Electrical circuit diagram
24Item register
27Contact information
3Table of ContentsNIBE ERS S10-400
Table of Contents

Safety information
This manual describes installation and service proced-
ures for implementation by specialists.
The manual must be left with the customer.
This appliance can be used by children
aged from 8 years and above and persons
with reduced physical, sensory or mental
capabilities or lack of experience and
knowledge if they have been given super-
vision or instruction concerning use of the
appliance in a safe way and understand
the hazards involved. Children shall not
play with the appliance. Cleaning and user
maintenance shall not be made by children
without supervision.
Rights to make any design or technical
modifications are reserved.
©NIBE 2020.
SYMBOLS
NOTE
This symbol indicates danger to person or ma-
chine .
Caution
This symbol indicates important information
about what you should consider when installing
or servicing the installation.
TIP
This symbol indicates tips on how to facilitate
using the product.
MARKING
Serial number
The serial number can be found at the top right inside
the front hatch.
LEK
LEK
Serial number
Caution
You need the product's serial number for servi-
cing and support.
NIBE ERS S10-400Chapter 1 | Important information4
1 Important information

Recovery
Leave the disposal of the packaging to the in-
staller who installed the product or to special
waste stations.
When disposing of the product, its constituent
materials and components, e.g. compressors,
fans, circulation pumps and circuit boards, must be dis-
posed of at a special waste station or dealer who
provides this type of service.
To access the separate components, refer to the section
that shows the construction of the product. No special
tools are required for access.
Improper disposal of the product by the user results in
administrative penalties in accordance with current le-
gislation.
5Chapter 1 | Important informationNIBE ERS S10-400

Inspection of the installation
Current regulations require the heating installation to be inspected before it is commissioned. The inspection must
be carried out by a suitably qualified person. In addition, fill in the page for the installation data in the User Manual.
DateSigna-
ture
NotesDescription
✔
Electricity (page 14)
Connections
Main voltage
Fuses property
Earth circuit-breaker
NIBE ERS S10-400Chapter 1 | Important information6

Transport and storage
ERS S10 should be transported and stored in the dry.
Assembly
ERS S10 is installed using the enclosed rail on a solid
wall. Noise from the fans can be transferred to the rail.
•Install with its back to an outside wall, ideally in a room
where noise does not matter, in order to eliminate
noise problems. If this is not possible, avoid placing
it against a wall behind a bedroom or other room
where noise may be a problem.
• Wherever the unit is located, walls to sound sensitive
rooms should be fitted with sound insulation.
• Condensation comes from the ventilation heat ex-
changer. A condensation outlet with a water seal must
be installed and routed to an internal drain.
• The ventilation heat exchanger’s installation area
should always have a temperature of at least 10 °C
and max. 35 °C.
INSTALLATION AREA
Leave a free space of 800 mm in front of the product.
800
NOTE
Ensure that there is necessary space (300 mm)
above the exhaust ventilation heat exchanger
for installing ventilation hoses.
Supplied components
LEK
Rail for wall mounting
7Chapter 2 | Delivery and handlingNIBE ERS S10-400
2 Delivery and handling

Removing the covers
FRONT COVER
1. Lift the front cover upwards slightly.
2. Pull the hatch towards yourself.
LEK
Removing parts of the
insulation
FRONT INSULATION
The insulation in the front must be removed to access
the internal parts.
1. Remove the air filter.
2. Slacken off the screws that hold the insulation in
place.
3. Pull the insulation straight out.
NIBE ERS S10-400Chapter 2 | Delivery and handling8

LEK
GQ2
XL31
XL34 XL32
XL33
AA5
GQ3
WM5
EP26
XL40
HQ11
HQ10
UB1
QN37
W102
W101
9Chapter 3 | The ventilation heat exchanger designNIBE ERS S10-400
3 The ventilation heat
exchanger design

Pipe connections
Ventilation connection, exhaust airXL31
Ventilation connection, extract airXL32
Ventilation connection, supply airXL33
Ventilation connection, outdoor airXL34
Condensation water drainXL40
Sensors etc.
Temperature sensor, exhaust airBT20
Temperature sensor, extract airBT21
Temperature sensor, supply airBT22
Temperature sensor, outdoor airBT23
Electrical components
Accessory cardAA5
Cable glandUB1
Cord with connection plugW101
Communication cableW102
Ventilation
Heat exchangerEP26
Exhaust air fanGQ2
Supply air fanGQ3
Exhaust air filterHQ10
Supply air filterHQ11
Bypass damperQN37
Miscellaneous
Type platePF1
Condensation water troughWM5
Designations according to standard EN 81346-2.
NIBE ERS S10-400Chapter 3 | The ventilation heat exchanger design10

Mounting
When hanging on a wooden wall, a vibration damper is
recommended to prevent vibration being transferred.
1. Install the enclosed bracket to the wall.
2. Install ERS S10 on the brackets.
3. Screw ERS S10 firmly into place on the bracket.
LEK
LEK
11Chapter 4 | Pipe and ventilation connectionsNIBE ERS S10-400
4 Pipe and ventilation
connections

Condensation water
drain
ERS S10 can produce several litres of condensation
water per day. It is therefore important for the condens-
ation outlet to be correctly executed and for the ventila-
tion heat exchanger to be installed horizontally.
Check that the water seal is airtight and firmly in posi-
tion. The connection must be made so that the user can
check and top up the water seal, without opening ERS
S10.
The condensation outlet is adapted for the type of water
seal that is traditionally used for a wash basin (connec-
tion G32).
CLEANING THE CONDENSATION WATER
DRAIN
Condensation forms when ERS S10 is working. This
condensation is led off and collected in the condensation
water drain. Apart from water, a certain amount of dust
and particles also collect there.
Check regularly that the condensation water drain and
any floor drains are not blocked; water must be able to
run through freely. Clean, if necessary.
NOTE
During operation, negative pressure arises in
the ventilation heat exchanger, which means
that a water column of at least 100 mm must
be guaranteed in the water seal.
100
General ventilation
connections
• Ventilation installation must be carried out in accord-
ance with current norms and directives.
• Provision must be made for inspection and cleaning
of the duct.
• The air duct system must be a minimum of air tight-
ness class B.
• To prevent fan noise being transferred to the ventila-
tion devices, silencers should be installed in the duct
system. In the event of ventilation devices in noise-
sensitive rooms, silencers must be installed.
• The extract air and outdoor air ducts are insulated us-
ing diffusion-proof material (at least PE30 or equival-
ent) along their entire lengths.
• Ensure that the condensation insulation is fully sealed
at any joints and/or at lead-in nipples, silencers, roof
cowls or similar.
• The air must be routed to the outdoor air duct through
an outer wall grille in the facade. The outer wall grille
must be installed so that it is protected from the
weather and must be designed so that no rainwater
and/or snow can penetrate the facade or follow the
air into the duct.
• When positioning the outdoor air and extract air
hood/grille, bear in mind that the two air flows must
not short circuit to prevent the extract air from being
drawn into ERS S10 again.
• A duct in a masonry chimney stack must not be used
for extract air or outdoor air.
NOTE
To ensure a sealed connection to ERS S10, the
supplied hose clips must be used for connect-
ing the air ducts.
EXHAUST AIR DUCT /KITCHEN FAN
Exhaust air duct (kitchen fan) must not be connected to
ERS S10.
To prevent food vapour being transferred to ERS S10
the distance between the kitchen fan and the exhaust
air device must be considered. The distance should not
be less than 1.5 m, but this can vary between different
installations.
Always use a kitchen fan when cooking.
NIBE ERS S10-400Chapter 4 | Pipe and ventilation connections12

Ventilation flow
Connect ERS S10 so that all the exhaust air, except kit-
chen duct air (kitchen fan), passes through the heat ex-
changer (EP26) in the product.
The ventilation flow must comply with the applicable
national standards.
The supply air flow must be lower than the exhaust air
flow to prevent over pressure in the house.
Adjusting ventilation
To obtain the necessary air exchange in every room of
the house, the exhaust air valve and the supply air inlet
as well as the fans in the ventilation heat exchanger
must be correctly positioned and adjusted.
Immediately after installation adjust the ventilation so
that it is set according to the projected value of the
house.
Incorrect adjustment of the ventilation may lead to re-
duced installation efficiency and thus poorer operating
economy, and may cause moisture damage in the
building
Dimension and
ventilation
connections
900 44
600
4 x Ø160
G32
308146 146
278206 146
630
Exhaust air
Outdoor air Extract air
Supply
air
Preheating outdoor air
If the extract air temperature is too low, the supply air
fan slows down to prevent the condensation water in
the heat exchanger from freezing.
To prevent this from happening too often in areas with
colder climates, an electrical air heater EAH (EB17) and
an outdoor air sensor (BT23) should be installed in the
outdoor air duct as illustrated. EAH heats the incoming
outdoor air so that the extract air temperature does not
fall to the stated level.
See the Installer Manual for EAH for more information.
EB17BT23
ERS S10
13Chapter 4 | Pipe and ventilation connectionsNIBE ERS S10-400

NOTE
All electrical connections must be carried out
by an authorised electrician.
Electrical installation and wiring must
be carried out in accordance with the
stipulations in force.
ERS S10 must not be powered during installa-
tion.
NOTE
If the supply cable is damaged, only
NIBE, its service representative or
similar authorised person may replace
it to prevent any danger and damage.
NOTE
To prevent interference, sensor cables to ex-
ternal connections must not be laid close to
high voltage cables.
For electrical wiring diagram, see page 23.
Connecting to main
product
If several accessories are to be connected, or are already
connected, the following cards must be connected in
series with the previous card.
Use cable type LiYY, EKKX or similar.
ON
12345678
-X9
-X2
24 20212223 1516171819 1011121314 56789 1
1
N
L
PE
PE
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
9
234
-X8
-X4
-X10
-X1
AA5-S2
AA5-X4
NIBE ERS S10-400Chapter 5 | Electrical connection14
5 Electrical connection

S-SERIES
The communication cable (W102) in ERS S10 must be
connected to the main product.
B A GND +12V
AA2-X30
1234
AA5-X4
1
2
3
4
5
6
7
8
A
B
GND
Main product
ERS S10
If more ERS S10 are to be installed, they must be con-
nected in series as illustrated:
B A GND
+12V
AA2-X30
1234
AA5-X4
1
2
3
4
5
6
7
8
A
B
GND
A
B
GND
AA5-X4
1
2
3
4
5
6
7
8
A
B
GND
A
B
GND
ERS S10 1
Main product
ERS S10 2
The DIP switch (AA5-S2) must be set as follows.
ON
1 2 3 4 5 6 7 8
ERS S10 no. 2
ON
1 2 3 4 5 6 7 8
ERS S10 no. 1
ON
1 2 3 4 5 6 7 8
ERS S10 no. 4
ON
1 2 3 4 5 6 7 8
ERS S10 no. 3
Outside air sensor
When installing with an electrical preheater (EAH), dis-
connect the outdoor air sensor (BT23) in ERS S10.
The enclosed outdoor air sensor EAH is placed in the
outdoor air duct and connected to the accessory board
(AA5) according to the Installer Manual for EAH.
15Chapter 5 | Electrical connectionNIBE ERS S10-400

Preparations
• Check the miniature circuit-breaker (FA1) in the main
product. It may have tripped during transportation.
• Check that the air filters are clean, they can become
dirty after installation.
Filling
• Check that there is water in the water seal, fill if ne-
cessary.
Start-up and
inspection
SETTING THE VENTILATION
The ventilation must be set according to applicable
standards. Adjust the supply air flow to guarantee a
negative pressure. The settings are made in menu 7.1.4.
Even if ventilation is roughly set at installation it is im-
portant that a ventilation adjustment is ordered and
permitted.
Caution
An incorrectly set ventilation flow can damage
the house and may also increase energy con-
sumption.
NOTE
Order a ventilation adjustment to complete the
setting.
Fan rating1
0100 20 30 40 50 60 70 80 90 100 110 120 130
10
20
30
40
50
60
70
80
90
Effekt
(W)
Fl de
(l/s)
30%
100%
80%
60%
50%
90%
70%
40%
Output
Airflow
1The diagram shows the power consumption per fan.
Dry temperature efficiency according to EN 308
78 0 25 50 75 100 125 150 (l/s)
0 100 15050 200 300250 350 400 500450 550 (m3/h)
80
82
84
86
88
90
92
94
Temperatur
( C)
Luftflöde
Temperature efficiency
Airflow
(m³/h)
NIBE ERS S10-400Chapter 6 | Commissioning and adjusting16
6 Commissioning and adjusting

Program setting of ERS S10 can be performed via the
start guide or directly in the menu system in the main
product.
Caution
See the documentation for the main product.
Start guide
The start guide appears upon first start-up after heat
pump installation, but is also found in menu 7.7.
Menu system
S-SERIES
If you do not make all settings via the start guide or need
to change any of the settings, this can be done in the
menu system.
Menu 7.2.1. - Add/remove accessories
Activating/deactivating of accessories.
Select “exhaust/supply air module 1-4"”.
Menu 7.2.11 - Ventilation heat exchanger (ERS)
lowest extract air temp.
Setting range: 0 – 10 °C
bypass at excess temperature
Setting range: 2 – 10 °C
bypass during heating
Setting range: on/off
cut-out value, exh. air temp.
Setting range: 5 – 30 °C
action level monitor
Setting range: Level monitor/Blocked/Off
Setting range: 1 – 100%
Setting range: 1 – 100%
Setting range: HTS 1 – 4
lowest extract air temp.: Set the minimum extract air
temperature to prevent the heat exchanger freezing.
bypass at excess temperature: If a room sensor is in-
stalled, set the excess temperature at which the bypass
damper is to open here.
bypass during heating: Used to operate the ventilation
heat exchanger with bypass while producing heating.
cut-out val. exh. air temp.: Bypass is activated when the
exhaust air temperature passes this temperature by the
number of degrees specified in the option "bypass at
excess temperature".
action level monitor: If level monitor is selected, the
product issues an alarm and the fan stops when the in-
put is closed. When blocking is selected, text in operat-
ing info shows that the input is closed. The fans stop
until the input is open.
ERS S10 does not have a built-in level monitor; for this
reason, select Level monitor in the menu when an ex-
ternal level monitor is connected. When the input is
broken, the installation issues an alarm and the fans
stop until the input is open.
Menu 1.2.1 - Fan speed
Alternatives: Normal and speed 1-4
The ventilation in the accommodation can be temporarily
increased or reduced here.
When you have selected a new speed a clock starts a
count down. When the time has counted down the
ventilation speed returns to the normal setting.
If necessary, the different return times can be changed
in menu 1.2.5.
The fan speed is shown in brackets (in percent) after
each speed alternative.
Menu 1.2.2 - Night cooling
Start temperature, exhaust air
Setting range: 20 – 30 °C
Lowest diff., outdoor/exhaust air
Setting range: 3 – 10 °C
Activate night cooling here.
When the temperature in the house is high and the
outdoor temperature is lower, a cooling effect can be
obtained by forcing the ventilation.
17Chapter 7 | Program settingsNIBE ERS S10-400
7 Program settings

If the temperature difference is greater than the set
value for “Min diff outdoor and exhaust air”, and the
exhaust air temperature is higher than the set value for
“Start temperature exhaust air”, the ventilation operates
at speed 4 until one of these conditions is no longer
valid.
Caution
Night cooling can only be used when heating
is not permitted, does not apply when "Bypass
during heating” is selected (see menu 7.2.11).
Menu 1.2.5 - Fan return time
Select the return time here for the temporary speed
change (speed 1-4) of the ventilation in menu 1.2.1.
Return time is the time taken before the ventilation
speed returns to normal speed.
Menu 1.2.6 - Filter cleaning interval
Cleaning interval
Setting range: 1 – 24 months
Clean the filter in ERS S10 regularly; how often depends
on the amount of dust in the ventilation air.
Set the interval for the reminder to clean the filter in this
menu.
The menu shows the time remaining until the next re-
minder, and you can also reset active reminders.
Menu 7.1.4.1 - Fan speed exhaust air
Normal and Speed 1-4
Setting range: 0 – 100 %
Set the speed for the five different selectable speeds
for the fan here.
Menu 7.1.4.2 - Fan speed supply air
Normal and Speed 1-4
Setting range: 0 – 100%
Set the speed for the five different selectable speeds
for the fan here.
Menu 6.2 - Scheduling
In this menu, you schedule repeated changes in heating
and hot water.
You can also schedule settings for certain installed ac-
cessories.
If a room sensor is installed and activated, the desired
room temperature (°C) is set during the time period.
If a room sensor is not activated, the desired offset of
the heating curve is set. One step is usually enough to
change the room temperature by one degree, but in
some cases several steps may be required.
Caution
A schedule repeats according to the selected
setting (e.g. every Monday) until you go into
the menu and switch it off.
NIBE ERS S10-400Chapter 7 | Program settings18

In most cases, the main product notes a malfunction (a
malfunction can lead to disturbance in comfort) and in-
dicates this with alarms and shows action instructions
in the display.
Troubleshooting
If the operational interference is not shown in the display
the following tips can be used:
BASIC ACTIONS
Start by checking the following possible fault sources:
• That the main product is running and that the supply
cable to ERS S10 is connected.
• Group and main fuses of the accommodation.
• The property's earth circuit breaker.
• The main product's fuses/temperature limiter.
HIGH OR LOW ROOM TEMPERATURE
• See Installer Manual for the main product.
LOW OR A LACK OF VENTILATION
• Filter blocked.
– Clean or replace the filter.
• The ventilation is not adjusted.
– Order/implement ventilation adjustment.
•Closed, too much choke or blocked ventilation device.
– Check and clean the exhaust air devices.
• Fan speed in reduced mode.
– Enter the main product’s menu 1.2.1 and select
"normal".
• External switch for changing the fan speed activated.
– Check any external switches.
• Fan running slow because of low incoming outdoor
air temperature.
– Check the function and settings for the electrical air
heater (EAH) if installed.
HIGH OR DISTRACTING VENTILATION
• Filter blocked.
– Clean or replace the filter.
• The ventilation is not adjusted.
– Order/implement ventilation adjustment.
•Closed, too much choke or blocked ventilation device.
– Check and clean the exhaust air devices.
• Fan speed in forced mode.
– Enter the main product's menu 1.2.1 and select
"normal".
• External switch for changing the fan speed activated.
– Check any external switches.
• Silencers not correctly installed.
– Check the silencers.
19Chapter 8 | Disturbances in comfortNIBE ERS S10-400
8 Disturbances in comfort

Some accessories manufactured before 2019 may need
to have their circuit board updated in order to be com-
patible with ERS S10. For more information, see the
Installer Manual for the relevant accessory.
ELECTRICAL AIR HEATER EAH 20
In cold weather, EAH 20-1800 heats the incoming out-
door air slightly to prevent the condensation in ERS S10
from freezing. Used mainly in colder climates.
Part no. 067 603
TOP CABINET
Top cabinet that conceals the ventilation ducts and re-
duces the sound to the installation room.
Height 345 mm
Part no. 089 757
Height 245 mm
Part no. 089 756
Height 385-635 mm
Part no. 089 758
Height 445 mm
Part no. 067 522
NIBE ERS S10-400Chapter 9 | Accessories20
9 Accessories