Nibe F135 User manual

UHB EN 1841-2
331433
USER MANUAL
Exhaust air module
NIBE F135

41 Important information
4Installation data
5Safety information
6Serial number
6Country specific information
7F135 – An excellent choice
82 The heating installation – the heart of the house
9Exhaust air module function
10Maintenance of F135
123 Disturbances in comfort
12Info-menu NIBE indoor module
12Manage alarm
14Troubleshooting
164 Technical data
175 Glossary
19Item register
23Contact information
3Table of ContentsNIBE F135
Table of Contents

Installation data
F135Product
Serial number
Installation date
Installer
SetFact.
sett.
NameNo.
70%Exhaust air installation (fan sp. exhaust air, normal)5.1.5
70%Pump speed5.3.14
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 F135Chapter 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 2018.
If the supply cable is damaged, only NIBE, its service
representative or similar authorised person may replace
it to prevent any danger and damage.
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.
5Chapter 1 | Important informationNIBE F135

Serial number
The serial number can be found to the left, on top of F135.
LEK
LEK
Serial number
Caution
You need the product's (14 digit) serial number for servicing
and support.
NIBE F135Chapter 1 | Important information6

F135 – An excellent choice
F135 is an accessory that makes it possible to combine an air/water heat
pump with mechanical exhaust air. The heat in the building’s ventilation
air is utilised by F135 and used to heat the building and the hot water at
the same time as ventilating the building. F135 is connected between
the indoor module and the air/water heat pump, and all control of F135
takes place from the indoor module.
EXCELLENT PROPERTIES FOR F135:
•DC fan
An energy efficient DC fan (Class A) is integrated in the exhaust air
module.
•Low noise level
The exhaust air module has a very low noise level.
•Easy to install
The exhaust air module is easy to install together with the indoor
module and the air/water heat pump. During installation, the exhaust
air module is connected to the indoor module, which enables you to
read off the exhaust air module’s values from the indoor module's
display.
7Chapter 1 | Important informationNIBE F135

Värmebärare
Köldmedium
Rumsluft
Uteluft
Förångare
Kondensor 100 °C
22 °C-15 °C
-5 °C-15 °C
55 °C45 °C
Expansionsventil Kompressor
A
D
F
H
I
B
C
E
G
9¦UPHE¦UDUH5XPVOXIW.¸OGPHGLXP)¸U§QJDUH.RQGHQVRU([SDQVLRQVYHQWLO.RPSUHVVRU9¦UPHN¦OOD9¦UPHN¦OOD
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
Air
Refrigerant
Evaporator
Condenser
1
3
Tappvarmvatten
Köldmedium
Luft
Förångare
Kondensor 80 °C
22 °C0 °C
5 °C0 °C
55 °C45 °C
Expansionsventil Kompressor
LEK
A
D
F
B
C
E
G
Heating medium
Heat source
CompressorExpansion valve
2
Heat source
The temperatures are only examples and may vary between different installations and
time of year.
NIBE F135Chapter 2 | The heating installation – the heart of the house8
2 The heating installation – the
heart of the house

Exhaust air module function
An exhaust air module uses the heat that is in the building's ventilation
air to heat up the house. The conversion of the ventilation air's energy
to residential heating is done in three different circuits. From the outgoing
ventilation air (1), free heating energy is retrieved from the house and
transported to the exhaust air module. The exhaust air module increases
the retrieved heat's low temperature to a high temperature in the refri-
gerant 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 exhaust
air module.
A
The fan then routes the air to the exhaust air module's evaporator. Here, the
air releases the thermal energy to the brine 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 exhaust air module,
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 approx. 5°C to approx. 80°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 tem-
perature. 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
Ventilation
The hot air is transferred from the rooms to the heat pump via the exhaust
air module.
J
The fan then routes the air to the exhaust air module heat exchanger. 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.
K
9Chapter 2 | The heating installation – the heart of the houseNIBE F135

Maintenance of F135
REGULAR CHECKS
Your exhaust air module requires minimal maintenance after commis-
sioning. However, it is recommended that you check your installation
regularly.
If anything unusual occurs, messages about the malfunction appear on
the indoor module’s display in the form of various alarm texts.
Cleaning the ventilation devices
The building’s ventilation devices should be
cleaned regularly with, for example, a small
brush to maintain the correct ventilation.
The device settings must not be changed.
NOTE
If you take down more than one
ventilation device for cleaning, do not
mix them up.
The temperatures are only examples and may vary between different installations and
time of year.
NIBE F135Chapter 2 | The heating installation – the heart of the house10

Cleaning the air filter
Clean the F135's air filter regularly, how often depends on the amount
of dust in the ventilation air. Select what is most suitable for your install-
ation.
1. Cut the power to the exhaust air module.
2. Pull out the filter cassette.
3. Remove the filter and shake/vacuum it clean.
4. Check the condition of the filter.
5. Carry out assembly in reverse order.
Even if the filter appears clean, dirt collects in it and this affects the effi-
ciency of the filter. Therefore, replace it after 1 years. New filters can be
ordered via the installer.
NOTE
Water or other liquids must not be used for cleaning.
Mora kniv
LEK
LEK
LEK
LEK
Filter
11Chapter 2 | The heating installation – the heart of the houseNIBE F135

In most cases, the indoor module notes operational interference (opera-
tional interference can lead to disturbance in comfort) and indicates this
with alarms and shows action instructions in the display.
Info-menu NIBE indoor module
All the indoor module measured values are gathered under menu 3.1 in
the indoor module menu system. Looking through the values in this
menu can often simplify finding the source of the fault.
Manage alarm
info / action
reset alarm
aid mode
Low pressure alarm
alarm
In the event of an alarm, some kind
of malfunction has occurred, which is
indicated by the status lamp changing
from green continuously to red con-
tinuously. In addition, an alarm bell
appears in the information window.
ALARM
In the event of an alarm with a red
status lamp a malfunction has oc-
curred that the indoor module cannot remedy itself. In the display, by
turning the control knob and pressing the OK button, you can see the
type of alarm it is and reset it. You can also choose to set the indoor
module to aid mode.
info / action Here you can read what the alarm means and receive tips
on what you can do to correct the problem that caused the alarm.
reset alarm In many cases, it is sufficient to select “reset alarm” in order
for the product to revert to normal operation. If a green light comes on
after selecting “reset alarm”, the alarm has been remedied. If a red light
NIBE F135Chapter 3 | Disturbances in comfort12
3 Disturbances in comfort

is still visible and a menu called “alarm” is visible in the display, the
problem causing the alarm still remains. If the alarm initially disappears
and then returns, you should contact your installer.
aid mode “aid mode” is a type of emergency mode. This means that
the indoor module produces heat and/or hot water, even though there
is some kind of problem. This could mean that the heat pump’s com-
pressor is not in operation. In this case, the immersion heater produces
heat and/or hot water.
Problems withF135 do not affect heat pump operation. You do not need
to select "aid mode" in event of problems with F135.
Caution
Selecting "aid mode” is not the same as correcting the problem
that caused the alarm. The status lamp will therefore continue
to be red.
If the alarm does not reset, contact your installer for suitable remedial
action.
NOTE
You need the product's (14 digit) serial number for servicing
and support.
13Chapter 3 | Disturbances in comfortNIBE F135

Troubleshooting
If the operational interference is not shown in the display the following
tips can be used:
BASIC ACTIONS
Start by checking the following items:
• That the feed cable is connected to F135.
• Group and main fuses of the accommodation.
• The property's earth circuit breaker.
LOW OR A LACK OF VENTILATION (EXHAUST AIR
INSTALLATION)
• Filter blocked.
– Clean or replace filter (see page 11).
• The ventilation is not adjusted.
– Order ventilation adjustment.
• Exhaust air device blocked or throttled down too much.
– Check and clean the exhaust air devices.
• Fan speed in reduced mode.
– Enter menu 1.2 and select "normal".
LOUD OR DISTURBING VENTILATION (EXHAUST AIR
INSTALLATION)
• Filter blocked.
– Clean or replace filter (see page 11).
• The ventilation is not adjusted.
– Order ventilation adjustment.
• Fan speed in forced mode.
– Enter menu 1.2 and select "normal".
GURGLING SOUND
• Not enough water in the water seal.
NIBE F135Chapter 3 | Disturbances in comfort14

– Refill the water seal with water.
• Choked water seal.
– Check and adjust the condensation water hose.
15Chapter 3 | Disturbances in comfortNIBE F135

Detailed technical specifications for this product can be found in the in-
stallation manual (nibe.eu).
NIBE F135Chapter 4 | Technical data16
4 Technical data

COMPRESSOR
Compresses the gas state refrigerant. When the refrigerant is com-
pressed, the pressure and the temperature increase.
CONDENSER
Heat exchanger where the hot gas state refrigerant condenses (cools
and becomes a liquid) and heats the hot water.
DISTURBANCES IN COMFORT
Disturbances in comfort means unwanted changes in hot water comfort,
e.g. that the temperature of the hot water is too low.
A malfunction in the heat pump can sometimes be noticed in the form
of a disturbance in comfort.
In most cases, the heat pump notes operational interference and indicates
this with alarms and shows instructions in the display.
EVAPORATOR
Heat exchanger where the refrigerant evaporates by retrieving heat en-
ergy from the air which then cools.
EXPANSION VALVE
Valve that reduces the pressure of the refrigerant, whereupon the tem-
perature of the refrigerant drops.
HEAT EXCHANGER
Device that transfers heat energy from one medium to another without
mixing mediums. Examples of different heat exchangers include evapor-
ators and condensers.
17Chapter 5 | GlossaryNIBE F135
5 Glossary

REFRIGERANT
Substance that circulates around a closed circuit in the heat pump and
that, through pressure changes, evaporates and condenses. During
evaporation, the refrigerant absorbs heating energy and when condensing
gives off heating energy.
SUPPLY TEMPERATURE
The temperature of the heated water that the heat pump sends out to
the heating system. The colder the outdoor temperature, the higher the
supply line temperature becomes.
NIBE F135Chapter 5 | Glossary18

A
Alarm, 12
D
Disturbances in comfort
Alarm, 12
Manage alarm, 12
Troubleshooting, 14
F
F135 – An excellent choice, 7
G
Glossary, 17
I
Important information
F135 – An excellent choice, 7
Installation data, 4
Serial number, 6
Warranty and insurance informa-
tion, 6
Installation data, 4
M
Maintenance of F135, 10
Regular checks, 10
Manage alarm, 12
R
Regular checks, 10
S
Serial number, 6
T
Technical data, 16
The function of the exhaust air
module, 9
The heating installation – the heart
of the house, 8
Troubleshooting, 14
W
Warranty and insurance informa-
tion, 6
19Item registerNIBE F135
Item register