Nibe F1255 Series User manual

User manual
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NIBE™ F1255
Ground source heat pump
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A detailed explanation of the button functions can be found on page
11.
How to scroll through menus and make different settings is described
on page 15.
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The mode for setting the indoor temperature is reached, when in the
start mode in the main menu, by pressing the OK button twice. Read
more about the settings on page 24.
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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. Read more about the settings on page 44.
In event of disturbances in comfort
If a disturbance in comfort of any type occurs there are some measures
that can be taken before you need to contact your installer. See page
68 for instructions.

Table of Contents
1 Important information 2
Installation data 2
Safety information 3
Serial number 4
Contact information 5
F1255 – An excellent choice 7
2 The heat pump – the heart of the house 8
Heat pump function 9
Contact with F1255 10
Maintenance of F1255 20
3 F1255 – at your service 24
Set the indoor climate 24
Set the hot water capacity 44
Get information 49
Adjust the heat pump 53
4 Disturbances in comfort 67
Manage alarm 67
Troubleshooting 68
Only additional heat 71
5 Technical data 72
6 Glossary 73
Item register 78
1NIBE™ F1255Table of Contents |

1Important information
Installation data
F1255Product
Serial number
Installation date
Installer
Type of brine -
Mixing ratio/freezing point
Active drilling depth/collector
length
Accessories
✔
SetDefault
settings
NameNo.
0heating curve (off-
set)
1.9.1
7heating curve (curve
slope)
1.9.1
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™ F1255Chapter 1 | Important information2

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
instruction 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 2013.
Symbols
NOTE
This symbol indicates danger to machine or person.
Caution
This symbol indicates important information about what you should ob-
serve when maintaining your installation.
TIP
This symbol indicates tips on how to facilitate using the product.
Marking
The CE marking means that NIBE ensures that the product meets all regu-
lations that are placed on it based on relevant EU directives. The CE mark
is obligatory for most products sold in the EU, regardless where they are
made.
3NIBE™ F1255Chapter 1 | Important information

Serial number
The serial number can be found at the bottom right of the front cover and
in the info menu (menu 3.1).
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Caution
Always give the product's serial number (14 digits) when reporting a fault.
NIBE™ F1255Chapter 1 | Important information4

Contact information
KNV Energietechnik GmbH, Gahberggasse 11, 4861 SchörflingAT
Tel: [phone] Fax: [phone] E-mail: [e-mail]
www.knv.at
NIBE Wärmetechnik AG, Winterthurerstrasse 710, CH-8247 FlurlingenCH
Tel: [phone] Fax: [phone] E-mail: inf[email protected] www.nibe.ch
Druzstevni zavody Drazice s.r.o, Drazice 69, CZ - 294 71 Benatky nad
Jizerou
CZ
Tel: [phone] Fax: [phone] E-mail: [email protected]
www.nibe.cz
NIBE Systemtechnik GmbH, Am Reiherpfahl 3, 29223 CelleDE
Tel: [phone] Fax: [phone] E-mail: inf[email protected]
www.nibe.de
Vølund Varmeteknik A/S, Member of the Nibe Group, Brogårdsvej 7,
6920 Videbæk
DK
Tel: [phone] Fax: [phone] E-mail: inf[email protected] www.volun-
dvt.dk
NIBE Energy Systems OY, Juurakkotie 3, 01510 VantaaFI
Puh: 09-274 697 0 Fax: [phone] E-mail: [email protected] www.nibe.fi
AIT France, 10 rue des Moines, 67000 HaguenauFR
Tel : [phone] Fax : [phone] E-mail: inf[email protected] www.nibe.fr
NIBE Energy Systems Ltd, 3C Broom Business Park, Bridge Way,
Chesterfield S41 9QG
GB
Tel: [phone] Fax: [phone] E-mail: inf[email protected]
www.nibe.co.uk
NIBE Energietechniek B.V., Postbus 2, NL-4797 ZG WILLEMSTAD (NB)NL
Tel: [phone] Fax: [phone] E-mail: inf[email protected] www.nibenl.nl
ABK AS, Brobekkveien 80, 0582 Oslo, Postadresse: Postboks 64 Vollebekk,
0516 Oslo
NO
Tel. sentralbord: [phone] E-mail: [email protected] www.nibeen-
ergysystems.no
NIBE-BIAWAR Sp. z o. o. Aleja Jana Pawła II 57, 15-703 BIAŁYSTOKPL
Tel: [phone] Fax: [phone] E-mail: [e-mail]
www.biawar.com.pl
© "EVAN" 17, per. Boynovskiy, Nizhny NovgorodRU
Tel./fax [phone] E-mail: inf[email protected] www.nibe-evan.ru
5NIBE™ F1255Chapter 1 | Important information

NIBE AB Sweden, Box 14, Hannabadsvägen 5, SE-285 21 MarkarydSE
Tel: [phone] Fax: [phone] E-mail: inf[email protected]
www.nibe.se
For countries not mention in this list, please contact Nibe Sweden or check www.nibe.eu
for more information.
NIBE™ F1255Chapter 1 | Important information6

F1255 – An excellent choice
F1255 is part of a new generation of heat pumps, which have been intro-
duced to supply your home with inexpensive and environmentally friendly
heating and/or cooling. Heat production is safe and economical with in-
tegrated 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 under floor heating. It is
also prepared for connection to several different products and accessories,
e.g. extra hot water heater, ventilation recovery, pool, free cooling and
climate systems with different temperatures.
An immersion heater of 7 kW can be connected automatically if anything
unforeseen should occur or as reserve operation (then 6 kW).
F1255 is equipped with a control computer for good comfort, good eco-
nomy 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 thermometers
are not necessary.
Excellent properties for F1255:
႑Inverter 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 renewable energy.
႑Scheduling 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).
႑Display with user instructions
The heat pump has a large display with easy-to-understand menus that
facilitate setting a comfortable climate.
႑Simple troubleshooting
In the event of a fault, the heat pump display shows what happened
and the actions to be taken.
7NIBE™ F1255Chapter 1 | Important information

2The heat pump – the heart of
the house
Värmekälla
Förångare
Kondensor 100 °C
0 °C-3 °C
-2 °C
50 °C40 °C
Expansionsventil Kompressor
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The temperatures are only examples and may vary between different installations and
time of year.
NIBE™ F1255Chapter 2 | The heat pump – the heart of the house8

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.
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. 5ᩊC to approx. 100 ᩊC.
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 temperature.
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
The temperatures are only examples and may vary between different installations and
time of year.
9NIBE™ F1255Chapter 2 | The heat pump – the heart of the house

Contact with F1255
External information
When the heat pump door is closed, information can be received via an
information window and a status lamp.
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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
60.
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 67.
NIBE™ F1255Chapter 2 | The heat pump – the heart of the house10

Display unit
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There is a display unit behind the heat pump door, which is used to com-
municate with F1255. Here you:
႑switch on, switch off or set the heat pump in emergency mode.
႑sets the indoor climate and hot water as well as adjusts the heat pump
to your needs.
႑receive information about settings, status and events.
႑see 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. The easy-to-read display and menu system, facilitates
navigation 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:
႑lights green during normal operation.
႑lights yellow in emergency mode.
႑lights red in the event of a deployed alarm.
B
11NIBE™ F1255Chapter 2 | The heat pump – the heart of the house

OK button
The OK button is used to:
႑confirm selections of sub menus/options/set values/page in
the start guide.
C
Back button
The back button is used to:
႑go back to the previous menu.
႑change a setting that has not been confirmed.
D
Control knob
The control knob can be turned to the right or left. You can:
႑scroll in menus and between options.
႑increase and decrease the values.
႑change page in multiple page instructions (for example help
text and service info).
E
Switch
The switch assumes three positions:
႑On ()
႑Standby ( )
႑Emergency 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 im-
mersion heater engages. The heat pump display is not illuminated
and the status lamp illuminates yellow.
F
NIBE™ F1255Chapter 2 | The heat pump – the heart of the house12

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.
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INDOOR CLIMATE
Setting and scheduling the indoor climate. See page 24.
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 49.
Menu 3
HEAT PUMP
Setting time, date, language, display, operating mode etc. See page 53.
Menu 4
13NIBE™ F1255Chapter 2 | The heat pump – the heart of the house

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 inform-
ation in menu 3.1 that you should note.
These two symbols indicate whether the compressor or addi-
tion is blocked in F1255.
These can, for example, be blocked depending on which op-
erating 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 lux mode for the hot water is activated.
This symbol indicates the actual speed of the fan if the speed
has changed from the normal setting.
Accessory NIBE FLM required.
This symbol indicates whether F1255 has contact with NIBE
Uplink™.
This symbol indicates whether "holiday setting" is activated
in menu 4.7.
NIBE™ F1255Chapter 2 | The heat pump – the heart of the house14

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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 brighter 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.
15NIBE™ F1255Chapter 2 | The heat pump – the heart of the house

Selecting options
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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.
NIBE™ F1255Chapter 2 | The heat pump – the heart of the house16

Setting a value
time & date4.4
time
day
year
month
24 hrs
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.
17NIBE™ F1255Chapter 2 | The heat pump – the heart of the house

Use the virtual keyboard
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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.
NIBE™ F1255Chapter 2 | The heat pump – the heart of the house18