Nibe F1255 Series User manual

UHB EN 2008-9
231530
USER MANUAL
Ground source heat pump
NIBE F1255

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 13.
How to scroll through menus and make different settings is described on
page 18.
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. Read more about
the settings on page 28.
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. Read
more about the settings on page 45.
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 installer.
See page 77 for instructions.

41 Important information
5Safety information
5Symbols
6Marking
6Serial number
8F1255 – An excellent choice
102 The heat pump – the heart of the house
11Heat pump function
12Contact with F1255
23Maintenance of F1255
24Saving tips
273 F1255 – at your service
27Set the indoor climate
44Set the hot water capacity
49Get information
52Adjust the heat pump
764 Disturbances in comfort
76Manage alarm
77Troubleshooting
81Only additional heat
825 Technical data
836 Glossary
89Item register
91Contact information
3Table of ContentsNIBE F1255
Table of Contents

INSTALLATION DATA
F1255Product
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 F1255Chapter 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 2020.
Do not start F1255 if there is a risk that the water in the
system has frozen.
If the supply cable is damaged, only NIBE, its service
representative or similar authorised person may replace
it to prevent any danger and damage.
Water may drip from the safety valve’s overflow pipe, so
the overflow pipe’s opening must be open. The safety
valves must be actuated regularly to remove dirt and to
check that they are not blocked.
Symbols
WARNING!
This symbol indicates serious danger to person or machine.
NOTE
This symbol indicates danger to person or machine .
5Chapter 1 | Important informationNIBE F1255

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.
CE
Classification of enclosure of electro-technical equipment.IP21
Danger to person or machine.
!
Read the User Manual.
Serial number
The serial number can be found at the bottom right of the front cover,
in the info menu (menu 3.1) and on the type plate .
Serial number
NIBE F1255Chapter 1 | Important information6

Caution
You need the product's ((14 digit) serial number for servicing
and support.
7Chapter 1 | Important informationNIBE F1255

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 underfloor heating. It
is also prepared for connection to several different products and accessor-
ies, e.g. extra hot water heater, ventilation recovery, pool, free cooling
and climate systems with different temperatures.
For F1255-6 1x230V or 3x230V a 4.5 kW immersion heater can be con-
nected automatically if anything unforeseen should occur or as back-up
operation (factory setting3.5 kW).
For F1255-12 1x230V an immersion heater of 7 kW can be connected
automatically if anything unforeseen should occur or as back-up operation
(factory setting 6 kW).
For F1255-12 3x230V an immersion heater of 9 kW can be connected
automatically if anything unforeseen should occur or as back-up operation
(factory setting 6 kW).
For F1255-6 3x400V an immersion heater of 6.5 kW can be connected
automatically if anything unforeseen should occur or as back-up operation
(factory setting 3.5 kW).
For F1255-12 & -16 3x400V an immersion heater of 7 kW (switchable to
9 kW) can be connected automatically if anything unforeseen should
occur or as back-up operation (factory 6 kW).
F1255 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 F1255:
•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.
NIBE F1255Chapter 1 | Important information8

•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.
•Simple troubleshooting
In the event of a fault, the heat pump display shows what happened
and the actions to be taken.
9Chapter 1 | Important informationNIBE F1255

100 ºC
50 ºC40 ºC
-2 ºC
0 ºC-3 ºC
-4 ºC
Heating medium
Brine
Refrigerant
Evaporator
Condenser
Expansion valve
Compressor
1
2
3
Heat source
A
B
C
D
E
G
F
H
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 house10
2 The heat pump – the heart of
the house