Nibe F2120 Series Bedienungsanleitung

UHB EN 1951-5

331398

USER MANUAL

Air/water heat pump

NIBE F2120 8, 12, 16, 20

41 Important information

4Installation data

5Safety information

6Symbols

6Marking

7Serial number

7F2120 – An excellent choice

92 The heat pump – the heart of the house

9Heat pump function

11Control of F2120

12Maintenance of F2120

193 Disturbances in comfort

19Troubleshooting

204 Technical data

215 Glossary

26Item register

27Contact information

3Table of ContentsNIBE F2120

Table of Contents

Installation data

F2120Product

Serial number

Installation date

Installer

Serial number must always be given.

Certification that the installation is carried out according to instructions

in NIBE's installer manual and applicable regulations.

_________________________Signed__________________Date

NIBE F2120Chapter 1 | Important information4

1 Important information

Safety information

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 supervision or in-

struction concerning use of the appliance in a safe way

and understand the hazards involved. The product is

intended for use by experts or trained users in shops,

hotels, light industry, farming and similar environments.

Children must be instructed/supervised to ensure that

they do not play with the appliance.

Do not allow children to clean or maintain the appliance

unsupervised.

This is an original manual. It may not be translated

without the approval of NIBE.

Rights to make any design or technical modifications

are reserved.

©NIBE 2020.

F2120 must be installed via an isolator switch. The cable

area has to be dimensioned based on the fuse rating used.

If the supply cable is damaged, only NIBE, its service

representative or similar authorised person may replace

it to prevent any danger and damage.

5Chapter 1 | Important informationNIBE F2120

Symbols

NOTE

This symbol indicates danger to person or machine .

Caution

This symbol indicates important information about what you

should observe when maintaining your installation.

TIP

This symbol indicates tips on how to facilitate using the product.

Marking

The CE mark is obligatory for most products sold in the EU, re-

gardless of where they are made.

Classification of enclosure of electro-technical equipment.IP24

Danger to person or machine.

Read the User Manual.

Read the Installer Manual.

NIBE F2120Chapter 1 | Important information6

Serial number

The serial number can be found at the top left on the rear cover and at

the bottom on the side.

F2120

Serial number

Caution

You need the product's (14 digit) serial number for servicing

and support.

F2120 – An excellent choice

F2120 is an air/water heat pump, specially designed for the Nordic cli-

mate, 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 temperat-

ures.

If the outdoor temperature drops to a level below the stop temperature

all heating must then occur with external additional heat.

EXCELLENT PROPERTIES FOR F2120:

•Efficient speed-controlled scroll compressor

Efficient speed-controlled scroll compressor that operates at temper-

atures down to -25 °C.

7Chapter 1 | Important informationNIBE F2120

•Intelligent control

F2120 connected to intelligent control for optimum control of the heat

pump.

•Fan

F2120 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 conditions.

•Many possibilities

F2120 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

F2120 has a silent operation function that allows scheduling when

F2120 must operate at an even quieter noise level.

NIBE F2120Chapter 1 | Important information8

Heat pump function

Värmebärare

Köldmedium

Uteluft

Förångare

Kondensor 80 °C

2 °C-3 °C

5 °C0 °C

55 °C45 °C

Expansionsventil Kompressor

Heating medium

Värmebärare

Köldmedium

Köldbärare

Värmekälla

Förångare

Kondensor 100 °C

0 °C-3 °C

-2 °C

50 °C40 °C

Expansionsventil Kompressor

Brine

Refrigerant

Evaporator

Condenser

Expansion valve Compressor

Heat source 1

The temperatures are only examples and may vary between different installations and

time of year.

9Chapter 2 | The heat pump – the heart of the houseNIBE F2120

2 The heat pump – the heart of

the house

An air/water heat pump can use the outdoor air to heat up a home. The

conversion of the outdoor air’s energy to residential heating occurs in

three different circuits. In the brine circuit (1), free heat energy is retrieved

from the surroundings 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 by

the heating medium circuit (3).

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 temperature

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 out-

door 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 in-

creases and the gas's temperature increases considerably, from 5 °C to

approx. 80 °C.

From the compressor, gas is forced into a heat exchanger, condenser,

where it releases heat energy to the heating system in the house,

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 original

temperature. The refrigerant has now completed 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 re-

trieved by the climate system's water, heating medium, which is heated

to 55 °C (supply temperature).

The heating medium circulates in a closed system and transports the

heated water's heating energy to the house water heater and radiat-

ors/heating coils.

The temperatures are only examples and may vary between different installations and

time of year.

NIBE F2120Chapter 2 | The heat pump – the heart of the house10

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