Nibe F1255PC BE User manual

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
2X
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
2X
1X
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
BE
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
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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
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Marking
The CE mark is obligatory for most products sold in the EU, regardless
of where they are made.
CE
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
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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
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•Simple troubleshooting
In the event of a fault, the heat pump display shows what happened
and the actions to be taken.
NIBE F1255PC
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Värmebärare
Köldmedium
Köldbärare
Värmekälla
Förångare
Kondensor 100 °C
0 °C-3 °C
-2 °C
50 °C40 °C
Expansionsventil
Växelventil
Kompressor
LEK
A
D
F
H
I
B
C
E
G
Heating medium
Värmebärare
Köldmedium
Köldbärare
Värmekälla
Förångare
Kondensor 100 °C
0 °C-3 °C
-2 °C
50 °C40 °C
Expansionsventil Kompressor
A
D
F
H
B
C
E
G
Brine
Refrigerant
Evaporator
Condenser
Expansion valve Compressor
Heat source
1
2
3
Shunt valve
The temperatures are only examples and may vary between different installations and
time of year.
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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.
A
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.
B
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.
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 considerably, from approx. 5ｰC to approx. 100
ｰC.
D
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.
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 original tem-
perature. The refrigerant has now completed a full cycle. It is routed to the
evaporator again and the process is repeated.
F
Heat medium circuit
The heating energy that the refrigerant releases in the condenser is retrieved
by the heat pump's boiler section.
G
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.
H
Passive cooling
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The brine can also be circulated via a mixing valve to a heat exchanger. There
the brine cools the heating system's water so that comfort cooling can be
maintained during the hotter periods of the year.
I
Contact with F1255PC BE
EXTERNAL INFORMATION
When the heat pump door is closed, information can be received via an
information window and a status lamp.
Information window
Status lamp
Information window
The information window shows part of the display that is on the display
unit (located behind the door to the heat pump). The information window
can display different type of information, e.g. temperatures, clock, etc.
You determine what is to be displayed in the information window. Your
own combination of information is entered using the display unit. This
information is specific to the information window and disappears when
the heat pump door is opened.
Instructions on how to set the information window can be found on page
68.
Status lamp
The status lamp indicates the status of the heat pump: continuous green
light during normal function, continuous yellow light during activated
emergency mode or continuous red light in the event of a deployed
alarm.
Alarm management is described on page 75.
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DISPLAY UNIT
A
B
C
D
E
F
Display
Status lamp
OK button
Back button
Control knob
Switch
INDOOR CLIMATE
HEAT PUMP INFO
HOT WATER
F1255PC BE GUSB port
There is a display unit behind the heat pump door, which is used to
communicate with F1255PC BE. Here you:
• switch on, switch off or set the heat pump in emergency mode.
• sets the indoor climate and hot water as well as adjusts the heat pump
to your needs.
• receive information about settings, status and events.
• see different types of alarms and receive instructions about how they
are to be rectified.
Display
Instructions, settings and operational information are shown on the
display. You can easily navigate between the different menus and
options to set the comfort or obtain the information you require.
A
Status lamp
The status lamp indicates the status of the heat pump. It:
• lights green during normal operation.
• lights yellow in emergency mode.
• lights red in the event of a deployed alarm.
B
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OK button
The OK button is used to:
•confirm selections of sub menus/options/set values/page in the start
guide.
C
Back button
The back button is used to:
• go back to the previous menu.
• change a setting that has not been confirmed.
D
Control knob
The control knob can be turned to the right or left. You can:
• scroll in menus and between options.
• increase and decrease the values.
• change page in multiple page instructions (for example help text
and service info).
E
Switch
The switch assumes three positions:
•On ()
•Standby ( )
•Emergency mode ( )
Emergency mode must only be used in the event of a fault on the
heat pump. In this mode, the compressor switches off and the immer-
sion heater engages. The heat pump display is not illuminated and the
status lamp illuminates yellow.
F
USB port
The USB port is hidden beneath the plastic badge with the product
name on it.
The USB port is used to update the software.
Visit nibeuplink.com and click the "Software" tab to download the latest
software for your installation.
G
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MENU SYSTEM
When the door to the heat pump is opened, the menu system’s four
main menus are shown in the display as well as certain basic information.
INDOOR CLIMATE
HEAT PUMP INFO
HOT WATER
Indoor temperature - (if room sensors are installed)
Hot water temp.
Temporary lux (if activated)
Outdoor
temperature
Estimated amount of hot water
Information about
operation
INDOOR CLIMATE
Setting and scheduling the indoor climate. See page 25.
Menu 1
HOT WATER
Setting and scheduling hot water production. See page 44.
Menu 2
INFO
Display of temperature and other operating information and access to the alarm
log. See page 48.
Menu 3
HEAT PUMP
Setting time, date, language, display, operating mode etc. See page 52.
Menu 4
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Symbols in the display
The following symbols can appear in the display during operation.
DescriptionSymbol
This symbol appears by the information sign if there is informa-
tion in menu 3.1 that you should note.
These two symbols indicate whether the compressor or addition
is blocked in F1255PC BE.
These can, for example, be blocked depending on which oper-
ating mode is selected in menu 4.2, if blocking is scheduled in
menu 4.9.5 or if an alarm has occurred that blocks one of them.
Blocking the compressor.
Blocking additional heat.
This symbol appears if periodic increase or lux mode for the hot
water is activated.
This symbol indicates whether "holiday setting" is active in 4.7.
This symbol indicates whether F1255PC BE has contact with
NIBE Uplink.
This symbol indicates the actual speed of the fan if the speed
has changed from the normal setting.
Accessory needed.
This symbol indicates whether pool heating is active.
Accessory needed.
This symbol indicates whether cooling is active.
Accessory needed.
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INDOOR CLIMATE
HEAT PUMP INFO
HOT WATER
temperature
INDOOR CLIMATE 1
ventilation
scheduling
advanced
off
normal
Marked main menu
Menu number – marked sub menu Name and menu number – main menu
Symbol – main
menu
Status information – sub menus
Name – sub menusSymbols – sub menus
Operation
To move the cursor, turn the control knob to the left or the
right. The marked position is white and/or has a turned up tab.
Selecting menu
To advance in the menu system select a main menu by
marking it and then pressing the OK button. A new window then opens
with sub menus.
Select one of the sub menus by marking it and then pressing the OK
button.
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Selecting options
economy
comfort mode 2.2
normal
luxury
smart control
In an options menu the current selected option is indicated by a
green tick.
To select another option:
1. Mark the applicable option. One of the options is pre-selected
(white).
2. Press the OK button to confirm the selected option. The selected
option has a green tick.
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Setting a value
time & date4.4
time
day
year
month
24 h
12 h
date
Values to be changed
To set a value:
1. Mark the value you want to set using the control knob.
2. Press the OK button. The background of the value becomes
green, which means that you have accessed the setting mode.
3. Turn the control knob to the right to increase the value and to
the left to reduce the value.
4. Press the OK button to confirm the value you have set. To
change and return to the original value, press the Back button.
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Use the virtual keyboard
Different keyboards
In some menus where text may require entering, a virtual keyboard is
available.
Depending on the menu, you can gain access to different character sets
which you can select using the control knob. To change character table,
press the Back button. If a menu only has one character set the keyboard
is displayed directly.
When you have finished writing, mark "OK” and press the OK button.
19Chapter 2 | The heat pump – the heart of the house
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Scroll through the windows
A menu can consist of several windows. Turn the control knob to scroll
between the windows.
Current menu
window
Number of windows
in the menu
Scroll through the windows in the start guide
language4.6
If the start guide is left on this page it closes
automatically in
60 min
Arrows to scroll through window in start guide
1. Turn the control knob until one of the arrows in the top left corner
(at the page number) has been marked.
2. Press the OK button to skip between the steps in the start guide.
Help menu
In many menus there is a symbol that indicates that extra help is
available.
To access the help text:
1. Use the control knob to select the help symbol.
2. Press the OK button.
The help text often consists of several windows that you can scroll
between using the control knob.
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