Nibe F750 User manual

User manual
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NIBE™ F750
Exhaust air heat pump
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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.
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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 30.
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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 67
for instructions.

Table of Contents
1 Important information 2
Installation data 2
Safety information 3
Serial number 5
Contact information 6
F750 – An excellent choice 8
2 The heat pump – the heart of the house 9
Heat pump function 10
Contact with F750 11
Maintenance of F750 21
3 F750 – at your service 30
Set the indoor climate 30
Set the hot water capacity 44
Get information 49
Adjust the heat pump 53
4 Disturbances in comfort 66
Info-menu 66
Manage alarm 66
Troubleshooting 67
5 Technical data 71
6 Glossary 72
Item register 77
1NIBE™ F750Table of Contents |

1Important information
Installation data
F750Product
Serial number
Installation date
Installer
Accessories
✔
SetDe-
fault
set-
tings
NameNo.
Extra shunt ECS
40/41
-1temperature (heating curve
offset)
1.1
Room unit RMU 405heating curve (curve slope)1.9.1
Communications
module SMS 40
20min. flow line temp.1.9.3
Extra hot water heat-
er VPB(S)
75%ventilation
(fan speed, normal mode)
5.1.5
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™ F750Chapter 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 chil-
dren 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 observe
when maintaining your installation.
TIP
This symbol indicates tips on how to facilitate using the product.
3NIBE™ F750Chapter 1 | Important information

Marking
F750 is CE marked and fulfils IP21.
The CE marking means that NIBE ensures that the product meets all regula-
tions 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.
IP21 means that the product can be touched by hand, that objects with a
diameter larger than or equivalent to 12.5 mm cannot penetrate and cause
damage and that the product is protected against vertically falling drops.
NIBE™ F750Chapter 1 | Important information4

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.
5NIBE™ F750Chapter 1 | Important information

Contact information
KNV Energietechnik GmbH, Gahberggasse 11, 4861 SchörflingAT
Tel: [phone] Fax: [phone] E-mail: [email protected]
www.knv.at
NIBE Wärmetechnik AG, Winterthurerstrasse 710, CH-8247 FlurlingenCH
Tel: [phone] Fax: [phone] E-mail: [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: [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: [email protected] www.volund-
vt.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: [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: [email protected]
www.nibe.co.uk
NIBE Energietechniek B.V., Postbus 2, NL-4797 ZG WILLEMSTAD (NB)NL
Tel: [phone] Fax: [phone] E-mail: [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: [email protected]
www.biawar.com.pl
© "EVAN" 17, per. Boynovskiy, Nizhny NovgorodRU
Tel./fax [phone] E-mail: [email protected] www.nibe-evan.ru
NIBE™ F750Chapter 1 | Important information6

NIBE AB Sweden, Box 14, Hannabadsvägen 5, SE-285 21 MarkarydSE
Tel: [phone] Fax: [phone] E-mail: [email protected]
www.nibe.se
For countries not mention in this list, please contact Nibe Sweden or check www.nibe.eu
for more information.
7NIBE™ F750Chapter 1 | Important information

F750 – An excellent choice
F750 is part of a new generation of heat pumps, which have been introduced
to supply your home with inexpensive and environmentally friendly heating.
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 water heater and climate systems with different temperatures.
F750 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 F750:
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.
႑Buffer vessel
There is a buffer vessel integrated in the heat pump that equalises the
temperature of the water that is sent out in the climate system.
႑Scheduling the indoor comfort and hot water
Heating and hot water as well as ventilation, 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.
NIBE™ F750Chapter 1 | Important information8

2The heat pump – the heart of
the house
Värmebärare
Köldmedium
Rumsluft
Förångare
Kondensor 100 °C
22 °C-15 °C
-5 °C-15 °C
55 °C45 °C
Expansionsventil Kompressor
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The temperatures are only examples and may vary between different installations and time
of year.
9NIBE™ F750Chapter 2 | The heat pump – the heart of the house

Heat pump function
A exhaust air heat pump uses the heat that is in the building's ventilation air
to heat up the accommodation. The conversion of the ventilation air's energy
to accommodation heating occurs in three different circuits. From the outgoing
ventilation air (1) , free heating energy is retrieved from the accommodation
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.
Ventilation air
The hot air is transferred from the rooms to the heat pump via the house ventil-
ation system.
A
The fan then routes the air to the heat pump’s evaporator. Here, the air releases
the heating energy to the brine and the air's temperature drops significantly. The
cold air is then blown out of the house.
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 ventilation air 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 heat pump boiler section, 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 heat energy that the refrigerant produces in the condenser is retrieved by
the climate system's water, heating medium, which is heated to 55 °C (supply
temperature).
G
The heating medium circulates in a closed system and transports the heated wa-
ter's heat energy to the heat pump's integrated hot water heater and the radiat-
ors/heating coils of the house.
H
Buffer vessel
The heating medium passes the heat pump's integrated buffer vessel whereupon
the temperature is equalised. It is then transported to the heating system of the
house.
I
NIBE™ F750Chapter 2 | The heat pump – the heart of the house10

Contact with F750
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
59.
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 66.
The temperatures are only examples and may vary between different installations and time
of year.
11NIBE™ F750Chapter 2 | The heat pump – the heart of the house

Display unit
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There is a display unit behind the heat pump door, which is used to commu-
nicate with F750. 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
NIBE™ F750Chapter 2 | The heat pump – the heart of the house12

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
13NIBE™ F750Chapter 2 | The heat pump – the heart of the house

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 30.
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
NIBE™ F750Chapter 2 | The heat pump – the heart of the house14

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 F750.
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.
This symbol indicates whether F750 has contact with NIBE Up-
link™.
This symbol indicates whether solar heating is active.
Accessory needed.
This symbol indicates whether "holiday setting" is activated in
menu 4.7.
15NIBE™ F750Chapter 2 | The heat pump – the heart of the house

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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.
NIBE™ F750Chapter 2 | The heat pump – the heart of the house16

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.
17NIBE™ F750Chapter 2 | The heat pump – the heart of the house

Setting a value
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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.
NIBE™ F750Chapter 2 | The heat pump – the heart of the house18