Nibe S2125 Bedienungsanleitung

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

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.

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.

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

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.

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.

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.

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.

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.

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.

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).

The heating medium circulates in a closed sys-

tem and transports the heated water's heat

energy to the house radiators/heating coils.

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.

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

Prevent snow from building up and covering the grilles and drain holes

on S2125.

S2125 S2125

S2125S2125

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

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