Nibe F1245 User manual

User manual
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NIBE™ F1245
UK 1x230V
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 25.
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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 47.
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 71
for instructions.

Table of Contents
1 Important information 2
Installation data 2
Safety information 3
Serial number 4
Country specific information 4
F1245 – An excellent choice 7
2 The heat pump – the heart of the house 8
Heat pump function 9
Contact with F1245 10
Maintenance of F1245 19
3 F1245 – at your service 24
Set the indoor climate 24
Set the hot water capacity 46
Get information 52
Adjust the heat pump 57
4 Disturbances in comfort 70
Manage alarm 70
Troubleshooting 71
Only additional heat 74
5 Technical data 75
6 Glossary 76
Item register 82
1NIBE™ F1245Table of Contents |

1Important information
Installation data
F1245Product
Serial number
Installation date
Installer
Type of brine -
Mixing ratio/freezing point
Active drilling depth/collector
length
Accessories
✔
SetDe-
fault
set-
tings
NameNo.
0heating curve (offset)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™ F1245Chapter 1 | Important information2

Safety information
This appliance is not intended for use by persons (including children) with
reduced physical, sensory or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or instruction concerning
use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appli-
ance.
Rights to make any design or technical modifications are reserved.
©NIBE 2011.
Symbols
NOTE
This symbol indicates danger to machine or person.
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.
3NIBE™ F1245Chapter 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 when reporting a fault.
Country specific information
Great Britain
This installation is subject to building regulation approval, notify the local
Authority of intention to install.
Use only manufacturer’s recommended replacement parts.
Nibe is a licensed member of the Benchmark Scheme which aims to improve
the standards of installation and commissioning of domestic heating and hot
water systems in the UK and to encourage regular servicing to optimise safety,
efficiency and performance.
Benchmark is managed and promoted by the Heating and Hotwater Industry
Council. For more information visit www.centralheating.co.uk
Warranty information
Thank you for installing a new NIBE heat pump in your home.
NIBE heat pumps are manufactured in Sweden to the very highest standard
so we are pleased to offer our customers a comprehensive guarantee.
NIBE™ F1245Chapter 1 | Important information4

The product is guaranteed for 24 months for parts and labour from the date
of installation or 33 months from the date of manufacture, whichever is the
shorter.
The NIBE guarantee is based on the unit being installed and commissioned
by a NIBE accredited installer, serviced every year and the Benchmark docu-
ments completed. Where this condition is not met, any chargeable spare
parts or components issued within the applicable guarantee period still benefit
from a 12 month warranty from the date of issue by the manufacturer.
We recommend the installer completes and returns as soon as possible, your
guarantee registration card or completes the guarantee form on the NIBE
website www.nibe.co.uk.
Please ensure that the installer has fully completed the Benchmark Checklist
in the end of the Installation Instructions supplied with the product and that
you have signed to say that you have received a full and clear explanation of
its operation. The installer is legally required to complete a commissioning
checklist as a means of complying with the appropriate Building Regulations
(England and Wales).
All installations must be notified to Local Area Building Control either directly
or through a Competent Persons Scheme. A Building Regulations Compliance
Certificate will then be issued to the customer who should, on receipt, write
the Notification Number on the Benchmark Checklist.
This product should be serviced regularly to optimise its safety, efficiency and
performance. The service engineer should complete the relevant Service Record
on the Benchmark Checklist after each service.
The Benchmark Checklist may be required in the event of any warranty work
and as supporting documentation relating to home improvements in the
optional documents section of the Home Information Pack.
5NIBE™ F1245Chapter 1 | Important information

NIBE™ F1245Chapter 1 | Important information6

F1245 – An excellent choice
F1245 is part of a new generation of heat pumps, which have been introduced
to supply your home with inexpensive and environmentally friendly heating
and/or cooling. Heat production is safe and economical with integrated hot
water heater, immersion heater, circulation pump and control system.
The heat pump can be connected to an optional low temperature heat distri-
bution 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).
F1245 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 thermometers are not
necessary.
Excellent properties for F1245:
႑Integrated water heater
There is a water heater integrated in the heat pump, which is insulated
with environmentally friendly cellular plastic for minimal heat loss.
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 (vacation).
႑Large display 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™ F1245Chapter 1 | Important information

2The heat pump – the heart of
the house
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0 °C-3 °C
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50 °C40 °C
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The temperatures are only examples and may vary between different installations and time
of year.
NIBE™ F1245Chapter 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 5°C to approx. 100 °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 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 wa-
ter'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™ F1245Chapter 2 | The heat pump – the heart of the house

Contact with F1245
External information
When the heat pump door is closed, information can be received via an in-
formation 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
61.
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 70.
NIBE™ F1245Chapter 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 commu-
nicate with F1245. 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™ F1245Chapter 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 immersion
heater engages. The heat pump display is not illuminated and the
status lamp illuminates yellow.
F
NIBE™ F1245Chapter 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 46.
Menu 2
INFO
Display of temperature and other operating information and access to the
alarm log. See page 52.
Menu 3
HEAT PUMP
Setting time, date, language, display, operating mode etc. See page 57.
Menu 4
13NIBE™ F1245Chapter 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 informa-
tion in menu 3.1 that you should note.
These two symbols indicate whether the compressor or addition
is blocked in F1245.
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 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 "holiday setting" is activated in
menu 4.7.
NIBE™ F1245Chapter 2 | The heat pump – the heart of the house14

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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™ F1245Chapter 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:
Mark the applicable option. One of the options is pre-selected
(white).
1.
Press the OK button to confirm the selected option. The selected
option has a green tick.
2.
NIBE™ F1245Chapter 2 | The heat pump – the heart of the house16

Setting a value
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To set a value:
Mark the value you want to set using the control knob.1.
Press the OK button. The background of the value becomes
green, which means that you have accessed the setting mode.
2.
Turn the control knob to the right to increase the value and to
the left to reduce the value.
3.
Press the OK button to confirm the value you have set. To change
and return to the original value, press the Back button.
4.
17NIBE™ F1245Chapter 2 | The heat pump – the heart of the house

Scroll through the windows
A menu can consist of several windows. Turn the control knob to scroll
between the windows.
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Scroll through the windows in the start guide
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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 avail-
able.
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.
NIBE™ F1245Chapter 2 | The heat pump – the heart of the house18