Nibe S2125 User manual

UHB EN 2125-1
531006
USER MANUAL
Air/water heat pump
NIBE S2125

41 Important information
4Installation data
5Symbols
5Marking
5Serial number
6S2125 – An excellent choice
72 Installation function
93 Control of S2125
104 Maintenance of S2125
10Regular checks
11In event of long power cuts
11Silent mode
11Fan de-icing
12
Updating the software in S2125 via the control
module or indoor module
12Saving tips
135 Disturbances in comfort
13Troubleshooting
15Contact information
3Table of ContentsNIBE S2125
Table of Contents

Installation data
S2125Product
Serial number
Installation date
Installer
Accessories
Serial number must always be given.
Certification that the installation is carried out according to instructions in the accompanying installer manual and applicable regulations.
__________________________________________Signed______________________________Date
NIBE S2125Chapter 1 | Important information4
1 Important information

Symbols
Explanation of symbols that may be present in this
manual.
NOTE
This symbol indicates danger to person or ma-
chine .
Caution
This symbol indicates important information
about what you should observe when maintain-
ing your installation.
TIP
This symbol indicates tips on how to facilitate
using the product.
Marking
Explanation of symbols that may be present on the
product’s label(s).
The CE mark is obligatory for most products
sold in the EU, regardless of where they are
made.
CE
The UKCA mark is obligatory for most products
sold in the UK, regardless of where they are
made.
Classification of enclosure of electrical equip-
ment.
IP
Fire hazard!
Danger to person or machine.
!
Read the User Manual.
Read the Installer Manual.
Serial number
The serial number can be found on the rear cover and
at the bottom on the side.
Caution
You need the product's (14 digit) serial number
for servicing and support.
5Chapter 1 | Important informationNIBE S2125

S2125 – An excellent
choice
S2125 is an air/water heat pump, specially designed for
the Nordic climate, which uses the outdoor air as its
energy source.
The heat pump is intended for connection to water borne
heating systems and can both heat hot water effectively
at high outdoor temperatures and give a high output to
the heating system at low outdoor temperatures.
If the outdoor temperature drops to a level below the
stop temperature all heating must then occur with ex-
ternal additional heat.
EXCELLENT PROPERTIES FOR S2125:
•Efficient speed-controlled compressor
Efficient speed-controlled compressor that operates
at temperatures down to -25 °C.
•Intelligent control
S2125 connected to intelligent control for optimum
control of the heat pump.
•Fan
S2125 has automatic capacity regulation of the fan.
•Long service life
The material has been chosen for a long service life
and is designed to withstand the Nordic outdoor con-
ditions.
•Many possibilities
S2125 is intended for combination with NIBE indoor
module VVM / NIBE control module SMO. There is a
wide range of system solutions and accessories for
NIBE's indoor modules and control modules.
•Silent operation
S2125 has a silent mode function that allows
scheduling when S2125 must operate at an even
quieter noise level.
NIBE S2125Chapter 1 | Important information6

An air/water heat pump installation uses the outdoor air
to heat up a home. The conversion of the outdoor air’s
energy into residential heating occurs in three different
circuits. From the outdoor air, (1) , free heat energy is
retrieved and transported to the heat pump. The heat
pump increases the retrieved heat’s low temperature
to a high temperature in the refrigerant circuit, (2) . The
heat is distributed around the building in the heating
medium circuit, (3) .
The temperatures are only examples and may vary
between different installations and time of year.
45 ºC
55 ºC
80 ºC 5 ºC
6 ºC
1 ºC
0 ºC
A
BC
F
EG
H
ID
123
Heating medium
Refrigerant
Outdoor air
Compressor
Condenser
Evaporator
Expansion valve
7Chapter 2 | Installation functionNIBE S2125
2 Installation function

Outdoor air
The outdoor air is sucked into the heat pump.
A
The fan then routes the air to the heat pump’s
evaporator. Here, the air releases the heating
energy to the refrigerant and the air's temperat-
ure drops. The cold air is then blown out of the
heat pump.
B
Refrigerant circuit
A gas circulates in a closed system in the heat
pump, a refrigerant, which also passes the
evaporator. The refrigerant has a very low boiling
point. In the evaporator the refrigerant receives
the heat energy from the outdoor air and starts
to boil.
C
The gas that is produced during boiling is routed
into an electrically powered compressor. When
the gas is compressed, the pressure increases
and the gas's temperature increases consider-
ably, from 0 °C to approx 80 °C.
D
From the compressor, gas is forced into a heat
exchanger, condenser, where it releases heat
energy to the indoor module, whereupon the
gas is cooled and condenses to a liquid form
again.
E
As the pressure is still high, the refrigerant can
pass an expansion valve, where the pressure
drops so that the refrigerant returns to its origin-
al temperature. The refrigerant has now com-
pleted a full cycle. It is routed to the evaporator
again and the process is repeated.
F
Heat medium circuit
The heat energy that the refrigerant produces
in the condenser is retrieved by the indoor
module's water, the heating medium, which is
heated to 55 °C (supply temperature).
G
The heating medium circulates in a closed sys-
tem and transports the heated water's heat
energy to the house radiators/heating coils.
H
The indoor module’s integrated charge coil is
placed in the boiler section. The water in the
coil heats up the surrounding domestic hot wa-
ter.
I
NIBE S2125Chapter 2 | Installation function8

S2125 is controlled in various ways depending on your
system. You control the heat pump via your indoor
module (VVM) or control module (SMO) See the relevant
manual for more information.
During installation, the installation engineer adjusts the
necessary settings for the heat pump in the indoor
module or control module, so that the heat pump works
optimally in your system.
9Chapter 3 | Control of S2125NIBE S2125
3 Control of S2125

Regular checks
When your heat pump is located outdoors some external
maintenance is required.
NOTE
Insufficient maintenance can cause serious
damage to S2125, which is not covered by the
guarantee.
CHECKING GRILLES AND BOTTOM PANEL
ON S2125
Regularly check throughout the year that the grille is not
clogged by leaves, snow or anything else.
You should be vigilant during windy conditions and/or
in the event of snow as the grille can become blocked.
Regularly check that condensation is routed away cor-
rectly through the condensation pipe. Ask your installer
for assistance if required.
Keep free of snow and ice
S2125 S2125
S2125S2125
LEK
LEK
LEK
LEK
Prevent snow from building up and covering the grilles and drain holes
on S2125.
S2125 S2125
S2125S2125
LEK
LEK
LEK
LEK
Keep free of snow and/or ice.
CLEANING THE OUTER CASING
If necessary the outer casing can be cleaned using a
damp cloth.
Care must be exercised so that the heat pump is not
scratched when cleaning. Avoid spraying water into the
grilles or the sides so that water penetrates into S2125.
Prevent S2125 coming into contact with alkaline cleaning
agents.
NIBE S2125Chapter 4 | Maintenance of S212510
4 Maintenance of S2125

In event of long power
cuts
In the event of prolonged power failures it is recommen-
ded that the part of the heating system located outdoors
is drained. Your installer has installed a shut off and drain
valve to facilitate this. Call and ask your installer if you
are unsure.
Silent mode
The heat pump can be set to "silent mode", which re-
duces the heat pump's noise level. The function is useful
when S2125 must be placed in noise sensitive areas.
The function should only be used for limited periods as
S2125 may not reach its dimensioned output.
Fan de-icing
S-SERIES – VVM S / SMO S
Menu 4.11.3 - Fan de-icing
F-SERIES – VVM / SMO
Menu 4.9.7 - tools
FAN DE-ICING
Setting range: off/on
CONTINUOUS FAN DE-ICING
Setting range: off/on
Fan de-icing: Here, you set whether the "fan de-icing"
function will be activated during the next "active defrost-
ing". This can be activated if ice/snow sticks to the fan,
grille or fan cone, which may be noticed due to abnormal
fan noise from S2125.
"Fan de-icing" means that the fan, grille and fan cone are
heated using hot air from the evaporator (EP1).
Continuous fan de-icing: There is the option to set recur-
ring de-icing. In this case, every tenth defrosting will be
"Fan de-icing". (This can increase annual energy consump-
tion.)
11Chapter 4 | Maintenance of S2125NIBE S2125

Updating the software
in S2125 via the
control module or
indoor module
UPDATING VIA VVM S OR SMO S
S2125 is updated automatically from the indoor mod-
ule/control module when new software is available.
UPDATING VIA VVM OR SMO
The latest software for both S2125 and the indoor
module/control module can be found at nibeuplink.com.
Click the "Software" tab to download the latest software
for your installation.
Save the files to a USB memory. Update S2125 and the
indoor module/control module at the same time.
INDOOR CLIMATE
MY SYSTEM INFO
HOT WATER
USB
update firmware
USB 7
logging
manage settings
In menu 7.1 on the indoor module/control module, the
following software updates can be performed:
• Software for the indoor module (VVM) or control
module (SMO)
• Software for outdoor module S2125
Caution
Software for the indoor/control module must
be updated when software for outdoor module
S2125 is updated.
Caution
It can take up to 30 minutes to update the
software for S2125.
Caution
Restart the indoor module/control module to
see the correct version number of the soft-
ware.
For cascade installation, together with SMO 40, all
S2125 will be updated in the address order. Deactivate
the S2125 that are not to be updated.
More detailed information about updating software via
USB can be found in the installer manual for your indoor
module or control module.
Saving tips
Your heat pump installation produces heat and hot wa-
ter. This occurs via the control settings you made.
Factors that affect the energy consumption are, for ex-
ample, indoor temperature, hot water consumption, the
insulation level of the house and whether the house has
many large window surfaces. The position of the house,
e.g. wind exposure is also an affecting factor.
Also remember:
• Open the thermostat valves completely (except in
rooms where you want it to be cooler). This is import-
ant, as fully or partially closed thermostat valves slow
the flow in the climate system, which results in S2125
working at a higher temperature. This in turn can lead
to increased energy consumption.
• You can lower the operating cost when away from
home by scheduling selected parts of the system.
This is done in menu 6 - "Scheduling" on your indoor
module/control module. Alternatively in menu 4.7
"holiday setting", if you have an older model of indoor
module/control module.
•If you select "Hot water demand Small” on your indoor
module/control module, less energy is used.
NIBE S2125Chapter 4 | Maintenance of S212512

Troubleshooting
NOTE
Work behind covers secured by screws may
only be carried out by, or under the supervision
of, a qualified installation engineer.
BASIC ACTIONS
• Make sure that the air flow to S2125 is not blocked
by foreign objects.
•Check that S2125 does not have any external damage.
ICE BUILD-UP IN THE FAN, GRILLE AND/OR
FAN CONE ON S2125
Set the "fan de-icing" function in the indoor module/con-
trol module. For more information, see the section
"Control – Heat pump EB101" in the Installer Manual.
If problems arise, contact your installer.
WATER BELOW S2125 (LARGER AMOUNT)
Check that the water drainage via the condensation pipe
(KVR 10) is working.
13Chapter 5 | Disturbances in comfortNIBE S2125
5 Disturbances in comfort

Contact information
DENMARKCZECH REPUBLICAUSTRIA
Vølund Varmeteknik A/S
Industrivej Nord 7B, 7400 Herning
Tel: [phone]
[email protected]
volundvt.dk
Družstevní závody Dražice - strojírna
s.r.o.
Dražice 69, 29471 Benátky n. Jiz.
Tel: [phone]
[email protected]
nibe.cz
KNV Energietechnik GmbH
Gahberggasse 11, 4861 Schörfling
Tel: [phone]
[email protected]
knv.at
GERMANYFRANCEFINLAND
NIBE Systemtechnik GmbH
Am Reiherpfahl 3, 29223 Celle
Tel: [phone]
[email protected]
nibe.de
NIBE Energy Systems France SAS
Zone industrielle RD 28
Rue du Pou du Ciel, 01600 Reyrieux
Tél: [phone]
[email protected]
nibe.fr
NIBE Energy Systems Oy
Juurakkotie 3, 01510 Vantaa
Tel: [phone]
[email protected]
nibe.fi
NORWAYNETHERLANDSGREAT BRITAIN
ABK-Qviller AS
Brobekkveien 80, 0582 Oslo
Tel: [phone]
[email protected]
nibe.no
NIBE Energietechniek B.V.
Energieweg 31, 4906 CG Oosterhout
Tel: [phone]
[email protected]
nibenl.nl
NIBE Energy Systems Ltd
3C Broom Business Park,
Bridge Way, S41 9QG Chesterfield
Tel: [phone]
[email protected]
nibe.co.uk
SWEDENRUSSIAPOLAND
NIBE Energy Systems
Box 14
Hannabadsvägen 5, 285 21 Markaryd
Tel: [phone]
[email protected]
nibe.se
EVAN
bld. 8, Yuliusa Fuchika str.
603024 Nizhny Novgorod
Tel: [phone]
[email protected]
nibe-evan.ru
NIBE-BIAWAR Sp. z o.o.
Al. Jana Pawla II 57, 15-703 Bialystok
Tel: [phone]
biawar.com.pl
SWITZERLAND
NIBE Wärmetechnik c/o ait Schweiz
AG
Industriepark, CH-6246 Altishofen
Tel. [phone]
[email protected]
nibe.ch
For countries not mentioned in this list, contact NIBE Sweden or check nibe.eu for more information.

NIBE Energy Systems
Hannabadsvägen 5
Box 14
SE-285 21 Markaryd
[email protected]
nibe.eu
UHB EN 2125-1 531006
This manual is a publication from NIBE Energy Systems. All product illustrations, facts and
data are based on the available information at the time of the publication’s approval.
NIBE Energy Systems makes reservations for any factual or printing errors in this manual.
©2021 NIBE ENERGY SYSTEMS 531006
WS name: -Gemensamt
WS version: a890
WS release date: 2021-05-27 15:29
Publish date: 2021-06-15 07:06