Nibe VVM 225 User manual

UHB EN 2028-3
431489
USER MANUAL
Electric boiler, indoor module
NIBE VVM 225

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 12.
How to scroll through menus and make different settings is described on
page 17.
Set the indoor climate
2X
MY INSTALLATION
INDOOR CLIMATE HOT WATER
INFO
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 27.
Increase hot water volume
2X
1X INDOOR CLIMATE HOT WATER
MY INSTALLATION INFO
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 48.
In event of disturbances in comfort
If you experience any disturbance in comfort, there are some measures you
can take yourself before you need to contact your installer. See the "Disturb-
ances in comfort" section for instructions.

51 Important information
5Installation data
6Safety information
7Symbols
7Marking
8Serial number
8Country specific information
9VVM 225 - An excellent choice
102 The heating installation – the heart of the house
11Installation function
12Contact with VVM 225
21Maintenance of VVM 225
23Saving tips
263 VVM 225 – at your service
26Set the indoor climate
47Set the hot water capacity
52Get information
55Adjust the electric boiler/indoor module
774 Disturbances in comfort
77Info-menu
77Manage alarm
79Troubleshooting
835 Technical data
846 Glossary
88Item register
3Table of ContentsNIBE VVM 225
Table of Contents

91Contact information
NIBE VVM 225Table of Contents4

Installation data
VVM 225Product
Serial number
Installation date
Installer
SetDefault set-
tings
NameNo.
0temperature (heating curve offset)1.1
9heating curve (curve slope)1.9.1
20min. flow line temp.1.9.3
Accessories
Always state the serial number.
Certification that the installation is carried out according to instructions
in NIBE's installer manual and applicable regulations.
_________________________Signed__________________Date
5Chapter 1 | Important informationNIBE VVM 225
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.
VVM 225 must be installed via an isolator switch. The
cable area has to be dimensioned based on the fuse rating
used.
If the supply cable is damaged, only NIBE, its service
representative or similar authorised person may replace
it to prevent any danger and damage.
Do not start VVM 225 if there is a risk that the water in
the system has frozen.
MinMaxSystem pressure
0.05 MPa
(0.5 bar)
0.3 MPa
(3 bar)
Heating medium
0.01 MPa
(0.1 bar)
1.0 MPa
(10 bar)
Domestic water
NIBE VVM 225Chapter 1 | Important information6

Symbols
NOTE
This symbol indicates danger to person or machine .
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.IPX1B
Danger to person or machine.
!
Read the User Manual.
7Chapter 1 | Important informationNIBE VVM 225

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 .
VVM225
Serial number
Caution
You need the product's ((14 digit) serial number for servicing
and support.
NIBE VVM 225Chapter 1 | Important information8

VVM 225 - An excellent choice
The electric boiler/indoor module can be connected to any low temper-
ature heat distribution system, e.g. radiators, convectors or underfloor
heating. It is also prepared for connection to a number of different
products and accessories, e.g. solar or other external heat source, extra
water heater, swimming pool and climate systems with different tem-
peratures.
VVM 225 is equipped with a control computer for good comfort, good
economy and safe operation. Clear information about status, operating
time and all temperatures in the system is shown on the large and easy
to read display. This means, for example, that external unit thermometers
are not necessary.
EXCELLENT PROPERTIES FOR VVM 225:
•Integrated water heater
There is a water heater integrated in VVM 225, which is insulated with
environmentally friendly cellular plastic for minimal heat loss.
•Scheduling the indoor comfort and hot water
Heating and hot water can be scheduled for each day of the week or
for longer periods (vacation).
•Large display with user instructions
The electric boiler/indoor module has a large display with easy-to-un-
derstand menus that help make setting a comfortable indoor climate
easy.
9Chapter 1 | Important informationNIBE VVM 225

Förångare
Kondensor 80 °C
2 °C-3 °C
0 °C-7 °C
Expansionsventil Kompressor
A
D
F
B
C
E
Värmebärare
Köldmedium
Uteluft
55 °C45 °C
H
II
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
Outdoor air
Refrigerant
Evaporator
Condenser
Expansion valve Compressor
Heat source 1
2
3
The temperatures are only examples and may vary between different installations and
time of year.
NIBE VVM 225Chapter 2 | The heating installation – the heart of the house10
2 The heating installation – the
heart of the house

Installation function
An air/water heat pump installation uses the outdoor air to heat up a
home. The conversion of the outdoor air’s energy into residential heating
occurs in three different circuits. From the outdoor air, (1) , free heat
energy is retrieved 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) .
Outdoor air
The outdoor air is sucked into the heat pump.
A
The fan then routes the air to the heat pump’s evaporator. Here, the air
releases the heating energy to the refrigerant and the air's temperature
drops. The cold air is then blown out of the heat pump.
B
Refrigerant circuit
A gas 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 out-
door 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 in-
creases and the gas's temperature increases considerably, from 0 °C to
approx 80 °C.
D
From the compressor, the gas is forced into a heat exchanger, condenser,
where it releases heat energy to the electric boiler/indoor module,
whereupon the gas cools and condenses into a liquid 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 re-
trieved by the indoor module's water, the 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 house radiators/heating coils.
H
The electric boiler/indoor module’s integrated hot water coil is located
in the boiler section. The hot boiler water heats the hot water.
I
The temperatures are only examples and may vary between different installations and
time of year.
11Chapter 2 | The heating installation – the heart of the houseNIBE VVM 225

Contact with VVM 225
DISPLAY UNIT
A
B
C
D
E
F
Display
Status lamp
OK button
Back button
Control knob
Switch
INDOOR CLIMATE
MY SYSTEM INFO
HOT WATER
VVM225 GUSB port
There is a display unit on the front of the electric boiler/indoor module,
which is used to communicate with VVM 225. Here you:
• switch on, switch off or set the installation to emergency mode.
• set the indoor climate and hot water as well as adjust the installation
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. You can easily navigate between the different menus
and options to set the comfort or obtain the information you require.
A
NIBE VVM 225Chapter 2 | The heating installation – the heart of the house12

Status lamp
The status lamp indicates the status of the indoor module. It:
• lights green during normal operation.
• lights yellow in emergency mode.
• lights red in the event of a deployed alarm.
B
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 if there is a fault in the electric
boiler/indoor module. In this mode, the compressor switches off
and the immersion heater engages. The indoor module display is
not illuminated and the status lamp shines yellow.
F
13Chapter 2 | The heating installation – the heart of the houseNIBE VVM 225

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 nibeuplink.com and click the "Software" tab to download the
latest software for your installation.
G
NIBE VVM 225Chapter 2 | The heating installation – the heart of the house14

MENU SYSTEM
The four main menus and certain basic information are shown in the
display.
INDOOR CLIMATE
MY SYSTEM INFO
HOT WATER
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 27.
Menu 1
HOT WATER
Setting and scheduling hot water production. See page 48.
Menu 2
INFO
Display of temperature and other operating information and access to the alarm
log. See page 53.
Menu 3
MY SYSTEM
Setting time, date, language, display, operating mode etc. See page 57.
Menu 4
15Chapter 2 | The heating installation – the heart of the houseNIBE VVM 225

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 in the
outdoor module or additional heat is blocked in VVM 225.
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 VVM 225 has contact with
NIBE Uplink.
This symbol indicates the actual speed of the fan if the speed
has changed from the normal setting.
Accessory needed.
This symbol is visible in installations with active solar accessor-
ies.
This symbol indicates whether pool heating is active.
Accessory needed.
This symbol indicates whether cooling is active.
Heat pump with cooling function required.
NIBE VVM 225Chapter 2 | The heating installation – the heart of the house16

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.
Selecting options
economy
comfort mode 2.2
normal
luxury
smart control
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 selec-
ted option has a green tick.
17Chapter 2 | The heating installation – the heart of the houseNIBE VVM 225

Setting a value
time & date4.4
time
day
year
month
24 h
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.
NIBE VVM 225Chapter 2 | The heating installation – the heart of the house18

Use the virtual keyboard
Different keyboards
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.
19Chapter 2 | The heating installation – the heart of the houseNIBE VVM 225

Scroll through the windows
A menu can consist of several windows. Turn the control knob to scroll
between the windows.
Current menu
window
Number of windows
in the menu
Scroll through the windows in the start guide
language4.6
If the start guide is left on this page it closes
automatically in
60 min
Arrows to scroll through window in start guide
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
available.
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 VVM 225Chapter 2 | The heating installation – the heart of the house20