Nibe F750f750 User manual

User manual
LEK
NIBE™ F750
Exhaust air heat pump
UHB GB 1536-2
331472

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 17.
Set the indoor climate
2X
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 32.
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 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
21 Important information
2Installation data
3Safety information
5Serial number
6Contact information
8F750 – An excellent choice
92 The heat pump – the heart of the house
10Heat pump function
12Contact with F750
22Maintenance of F750
323 F750 – at your service
32Set the indoor climate
47Set the hot water capacity
52Get information
56Adjust the heat pump
704 Disturbances in comfort
70Info menu
70Manage alarm
71Troubleshooting
755 Technical data
766 Glossary
80Index
1NIBE™ F750Table of Contents |

1 Important information
Installation data
F750Product
Serial number
Installation date
Installer
Accessories
✔
SetFact-
ory
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
heater 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 children without
supervision.
Rights to make any design or technical modifications
are reserved.
©NIBE 2015.
NOTE
F750 must be installed via an isolator switch with a minimum breaking
gap of 3mm.
NOTE
If the supply cable is damaged, only NIBE, its service representative
or similar authorised person may replace it to prevent any danger
and damage.
NOTE
Warning: Do not start the heat pump if there is a risk that the water
in the system has frozen.
3NIBE™ F750Chapter 1 | Important information

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.
NIBE™ F750Chapter 1 | Important information4

Marking
F750 is CE marked and fulfils IP21.
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.
IP21 means 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 of water.
Serial number
The serial number can be found at the bottom right of the front cover and
in the info menu (menu 3.1).
Serial number
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: [e-mail]
www.knv.at
NIBE Wärmetechnik c/o ait Schweiz AG, Industriepark, CH-6246 Alt-
ishofen
CH
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.volundvt.dk
NIBE Energy Systems OY, Juurakkotie 3, 01510 VantaaFI
Puh: 09-274 697 0 Fax: [phone] E-mail: [email protected] www.nibe.fi
NIBE Energy Systems France Sarl, Zone industrielle RD 28, Rue du Pou
du Ciel, 01600 Reyrieux
FR
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 634, NL 4900 AP OosterhoutNL
Tel: [phone] Fax: [phone] E-mail: inf[email protected]
www.nibenl.nl
NIBE™ F750Chapter 1 | Important information6

ABK AS, Brobekkveien 80, 0582 Oslo, Postadresse: Postboks 64 Vol-
lebekk, 0516 Oslo
NO
Tel. sentralbord: [phone] E-mail: [email protected] www.ni-
beenergysystems.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
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.
7NIBE™ F750Chapter 1 | Important information

F750 – An excellent choice
F750 is part of a new generation of heat pumps, which have been intro-
duced 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
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 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:
■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.
■Buffer 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.
■Scheduling 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).
■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.
NIBE™ F750Chapter 1 | Important information8

2 The 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
LEK
A
D
F
H
I 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
Ventilation air
Refrigerant
Evaporator
Condenser
Expansion valve Compressor
Ventilation air
1
2
3
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
An exhaust air heat pump makes use of the heat in the building's ventila-
tion air to heat up the accommodation. The conversion of the ventilation
air's energy to accommodation heating is done in three different circuits.
From the outgoing ventilation air (1), free heating energy is retrieved from
the accommodation and transported to the heat pump. The heat pump
increases the retrieved heat's low temperature to a high temperature in
the refrigerant circuit, (2). The heat is distributed around the building in
the heating medium circuit (3).
Ventilation air
The hot air is transferred from the rooms to the heat pump via the house
ventilation system.
A
The fan then routes the air to the heat pump’s evaporator. Here, the air
releases the heating energy and the air's temperature drops significantly.
The cold air is then blown out of the house.
B
Refrigerant circuit
A liquid, a refrigerant, circulates in a closed system in the heat pump which
also passes the evaporator. The refrigerant has a very low boiling point.
In the evaporator the refrigerant receives the heat energy from the ventil-
ation 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
water's heat energy to the heat pump's integrated hot water heater and
the radiators/heating coils of the house.
H
Buffer vessel
NIBE™ F750Chapter 2 | The heat pump – the heart of the house10

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
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

Contact with F750
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
63.
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™ F750Chapter 2 | The heat pump – the heart of the house12

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
F750 GUSB port
There is a display unit behind the heat pump door, which is used to com-
municate with F750. 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. 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:
■lights green during normal operation.
■lights yellow in emergency mode.
■lights red in the event of a deployed alarm.
B
13NIBE™ F750Chapter 2 | The heat pump – the heart of the house

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 im-
mersion 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 http://www.nibeuplink.com and click the "Software" tab to
download the latest software for your installation.
G
NIBE™ F750Chapter 2 | The heat pump – the heart of the house14

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
SERVICE
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 32.
Menu 1
HOT WATER
Setting and scheduling hot water production. See page 47.
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 56.
Menu 4
15NIBE™ F750Chapter 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 F750.
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 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 F750 has contact with NIBE
Uplink™.
This symbol indicates the actual speed of the fan if the speed
has changed from the normal setting.
This symbol indicates whether solar heating is active.
Accessory needed.
NIBE™ F750Chapter 2 | The heat pump – the heart of the house16

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

Selecting options
economy
comfort mode2.2
normal
luxury
Alternative
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™ F750Chapter 2 | The heat pump – the heart of the house18