Nibe F1255PC BE Bedienungsanleitung

UHB EN 1835-1

531066

USER MANUAL

Ground source heat pump

NIBE F1255PC BE

Quick guide

Navigation

Ok button (confirm/select)

Back button (back/undo/exit)

Control knob (move/increase/reduce)

A detailed explanation of the button functions can be found on page

12.

How to scroll through menus and make different settings is described

on page 16.

Set the indoor climate

INDOOR CLIMATE

HEAT PUMP INFO

HOT WATER

The mode for setting the indoor temperature is accessed by pressing

the OK button twice, when in the start mode in the main menu.

Increase hot water volume

To temporarily increase the amount of hot water, first turn the control

knob to mark menu 2 (water droplet) and then press the OK button

twice.

In event of disturbances in comfort

If you experience a disturbance in comfort of any kind, there are some

measures you can take yourself before you need to contact your in-

staller. See page 76 for instructions.

41 Important information

4Installation data

5Safety information

5Symbols

6Marking

6Serial number

7F1255PC BE – An excellent choice

92 The heat pump – the heart of the house

10Heat pump function

11Contact with F1255PC BE

21Maintenance of F1255PC BE

253 F1255PC BE – at your service

25Set the indoor climate

44Set the hot water capacity

48Get information

52Adjust the heat pump

754 Disturbances in comfort

75Manage alarm

76Troubleshooting

76Only additional heat

785 Technical data

796 Glossary

85Item register

87Contact information

3Table of Contents

NIBE F1255PC

Table of Contents

Installation data

INSTALLATION DATA

F1255PC BEProduct

Serial number

Installation date

Installer

Type of brine -

Mixing ratio/freezing point

Active drilling depth/collector length

Accessories

✔

SetFact.

sett.

NameNo.

0heating curve (offset)1.9.1.1

7heating curve (curve slope)1.9.1.1

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 F1255PC

BEChapter 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. 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 2018.

Symbols

WARNING!

This symbol indicates serious danger to person or machine.

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.

5Chapter 1 | Important information

NIBE F1255PC

Marking

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

of where they are made.

Classification of enclosure of electro-technical equipment.IP21

Danger to person or machine.

Serial number

The serial number can be found at the bottom right of the front cover

and in the info menu (menu 3.1) and on the type plate (PF1).

Serial number

Caution

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

and support.

NIBE F1255PC

BEChapter 1 | Important information6

F1255PC BE – An excellent choice

F1255PC BE is part of a new generation of heat pumps, which have

been introduced to supply your home with inexpensive and environment-

ally friendly heating and/or cooling. Heat production is safe and econom-

ical with integrated hot water heater, immersion heater, circulation pump

and control system.

The heat pump can be connected to an optional low temperature heat

distribution system. e.g. radiators, convectors or underfloor heating. It

is also prepared for connection to several different products and accessor-

ies, e.g. extra hot water heater, ventilation recovery, pool and climate

systems with different temperatures.

For F1255PC BE 3x400V an immersion heater of 6.5 kW can be connec-

ted automatically if anything unforeseen should occur or as back-up op-

eration (then 3.5kW).

F1255PC BE is equipped with a control computer for good comfort, good

economy and safe operation. Clear information about status, operation

time and all temperatures in the heat pump are shown on the large and

easy to read display. This means, for example, that external unit thermo-

meters are not necessary.

EXCELLENT PROPERTIES FOR F1255PC BE:

•Inverter controlled compressor

The heat pump has an inverter-controlled compressor that automatically

adapts itself optimally and economically to your house and supplies

your installation with heating and hot water.

•Integrated water heater

There is a water heater integrated in the heat pump, which is insulated

with environmentally friendly cellular plastic for minimal heat loss.

•Scheduling the indoor comfort and hot water

Heating and hot water as well as cooling and ventilation in some cases,

can be scheduled for each day of the week or for longer periods (vaca-

tion).

•Display with user instructions

The heat pump has a large display with easy-to-understand menus that

facilitate setting a comfortable climate.

7Chapter 1 | Important information

NIBE F1255PC

•Simple troubleshooting

In the event of a fault, the heat pump display shows what happened

and the actions to be taken.

NIBE F1255PC

BEChapter 1 | Important information8

Värmebärare

Köldmedium

Köldbärare

Värmekälla

Förångare

Kondensor 100 °C

0 °C-3 °C

-2 °C

50 °C40 °C

Expansionsventil

Växelventil

Kompressor

LEK

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

Shunt valve

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

time of year.

9Chapter 2 | The heat pump – the heart of the house

NIBE F1255PC

2 The heat pump – the heart of

the house

Heat pump function

A heat pump can use stored solar energy from rock, ground or water in

order to heat a property. The conversion of stored energy in nature to

property 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. In the refrigerant circuit, (2) , the heat pump increases

the retrieved heat's low temperature to a high temperature. In the

heating medium circuit, (3) , the heat is distributed around the house.

The temperatures below are only examples and may vary between dif-

ferent installations and times of year.

Brine circuit

In a hose, collector, an anti-freeze liquid, brine, circulates from the heat pump

out to the heat source (rock/ground/lake). The energy from the heat source

is stored by it heating the brine a few degrees, from about –3°C to about 0

°C.

The collector then routes the brine to the heat pump’s evaporator. Here, the

brine releases heat energy and the temperature drops a few degrees. The

liquid then returns to the heat source to retrieve energy again.

Refrigerant circuit

Another liquid 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

brine 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 considerably, from approx. 5ｰC to approx. 100

ｰ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 tem-

perature. The refrigerant has now completed a full cycle. It is routed to the

evaporator again and the process is repeated.

Heat medium circuit

The heating energy that the refrigerant releases in the condenser is retrieved

by the heat pump's boiler section.

The heating medium circulates in a closed system and transports the heated

water's heat energy to the house water heater and radiators/heating coils.

Passive cooling

NIBE F1255PC

BEChapter 2 | The heat pump – the heart of the house10

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