Nibe FLM User manual

UHB EN 1850-5
031398
USER MANUAL
Exhaust air module
NIBE FLM
LEK

LEK
LEK
LEK

41 Important information
4Installation data
5Safety information
6Serial number
7NIBE FLM – An excellent choice
82 The heating installation – the heart of the house
9Exhaust air module function
10Maintenance of NIBE FLM
133 Disturbances in comfort
13
Info menu
13Manage alarm
15Troubleshooting
174 Technical data
185 Glossary
20Item register
23Contact information
3Table of ContentsNIBE FLM
Table of Contents

Installation data
NIBE FLMProduct
Serial number
Installation date
Installer
SetFact.
sett.
NameNo.
XDifferential brine in-/outX
100%Exhaust air fan (fan speed, normal mode)X
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 FLMChapter 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.
5Chapter 1 | Important informationNIBE FLM

Serial number
The serial number can be found at the bottom left inside the front cover.
LEK
Serial number
Caution
You need the product's (14 digit) serial number for servicing
and support.
NIBE FLMChapter 1 | Important information6

NIBE FLM – An excellent choice
NIBE FLM is part of a new generation of heating products, which have
been developed to supply your home with inexpensive and environment-
ally friendly heating and/or cooling in the most efficient way possible.
NIBE FLM provides you with mechanical exhaust air with recycling and
can be connected to most ground source heat pumps from NIBE. NIBE
FLM gives a better indoor climate, increases the heat pump’s output
and allows the length of the collector coil to be reduced in some cases.
The energy that is in the home’s indoor air can be used to recharge the
borehole/collection coil.
EXCELLENT PROPERTIES FOR NIBE FLM:
•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
NIBE FLM is easy to install together with any heat pump. When in-
stalling together with a compatible heat pump from NIBE, the exhaust
air module is connected to the heat pump, allowing you to read off the
exhaust air module’s values from the heat pump’s display.
COMPATIBLE NIBE HEAT PUMPS
• F1345
• F1355
• F1245
• F1255
• F1145
• F1155
7Chapter 1 | Important informationNIBE FLM

Värmebärare
Köldmedium
Köldbärare
Förångare
Kondensor 100 °C
-2 °C
Expansionsventil Kompressor
50 °C40 °C
22 °C 0 °C
Värmekälla
Rumsluft
-3 °C 0 °C
22 °C0 °C
D
F
C
E
A
B
J
K
G
Brine
Heat source
Room air
Refrigerant
Heating medium
Evaporator
Condenser
Expansion valve Compressor
The temperatures are only examples and may vary between different installations and
time of year.
NIBE FLMChapter 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 brine.
Brine circuit
An anti-freeze liquid (brine) circulates in a hose (collector) 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 approx. 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 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 35 °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
The temperatures are only examples and may vary between different installations and
time of year.
9Chapter 2 | The heating installation – the heart of the houseNIBE FLM

Maintenance of NIBE FLM
REGULAR CHECKS
Your exhaust air module requires minimal maintenance after commis-
sioning. On the other hand, it is recommended that you check your in-
stallation regularly.
If NIBE FLM is installed with a compatible heat pump and something
untoward occurs, a message appears regarding the malfunction in the
form of various alarm texts in the heat pump display.
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.
Cleaning the air filter
Clean the NIBE FLM's air filter regularly, how often depends on the
amount of dust in the ventilation air. Select what is most suitable for
your installation.
Caution
The efficiency of the installation can be impaired by a dirty air
filter.
If NIBE FLM is connected to a compatible heat pump, you receive a re-
minder to clean the filters in the display. The default setting for the re-
minder is every three months; however, if the power to the heat pump
is interrupted, the countdown starts from zero again.
NIBE FLMChapter 2 | The heating installation – the heart of the house10

1. Switch off the heat pump.
2. Remove the front hatch by pulling it straight out.
3. Pull out the filter cassette.
4. Remove the filter and shake/vacuum it clean.
5. Check the condition of the filter.
6. 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.
LEK
LEK
Filter
11Chapter 2 | The heating installation – the heart of the houseNIBE FLM

Checking the condensation water seal
LEK
The condensation hose from NIBE FLM should be shaped into a water
seal. The reverse of F1245/F1255 has a groove in the insulation for the
condensation hose; other compatible heat pumps do not have this groove.
Check that there is water in the water seal. If it is empty or has a very
low water level so that it "gurgles" water can be topped up.
After a period of operation dust and other particles can clog the water
seal, consequently, you should check this regularly and clean when ne-
cessary.
NIBE FLMChapter 2 | The heating installation – the heart of the house12

If NIBE FLM is not installed together with a compatible heat pump, go
directly to sectionTroubleshooting on page 15.
In most cases, the compatible heat pump notes a malfunction (a malfunc-
tion can lead to disturbance in comfort) and indicates this with alarms
and action instructions in the display.
Info menu
All the installation’s measurement values are gathered under menu 3.1
in the heat pump’s menu system. Examining the values in this menu
can often make it easier to identify the source of the fault.
Manage alarm
info / action
reset alarm
aid mode
Low pressure alarm
alarm
If there is an alarm, some kind of
malfunction has occurred, which is
indicated by the status lamp changing
from a steady green to a steady red
light. In addition, an alarm clock ap-
pears in the information window in
the compatible heat pump.
ALARM
In the event of an alarm with a red
status lamp a malfunction has occurred that the heat pump 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 heat pump 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
13Chapter 3 | Disturbances in comfortNIBE FLM
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 heat pump produces heat and/or hot water even if there is some
kind of problem with the heat pump. This could mean that the heat
pump’s compressor is not in operation. In this case, the immersion
heater produces heat and/or hot water.
Problems withNIBE FLM do not affect heat pump operation. You do not
need to select "aid mode" in event of problems with NIBE FLM.
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.
NIBE FLMChapter 3 | Disturbances in comfort14

Troubleshooting
If the malfunction does not appear in the display or NIBE FLM is not
connected to a compatible heat pump, the following tips can be used:
BASIC ACTIONS
Start by checking the following items:
• The switch's position.
• That the heat pump is running or that the supply cable to NIBE FLM
is connected.
• Group and main fuses of the accommodation.
• The property's earth circuit breaker.
LOW OR A LACK OF VENTILATION
• Filter blocked.
– Clean or replace filter (see page 10).
• The ventilation is not adjusted.
– Order ventilation adjustment.
• Exhaust air device blocked or throttled down too much.
– Check and clean the exhaust air devices (see page 10).
• Fan speed in reduced mode.
– If NIBE FLM is connected to a compatible heat pump: Enter menu
1.2 and select “normal”.
If NIBE FLM is connected to another heat pump: Contact your in-
staller!
• External switch for changing the fan speed activated.
– Check any external switches.
HIGH OR DISTRACTING VENTILATION
• Filter blocked.
– Clean or replace filter (see page 10).
• The ventilation is not adjusted.
– Order ventilation adjustment.
15Chapter 3 | Disturbances in comfortNIBE FLM

• Fan speed in forced mode.
– If NIBE FLM is connected to a compatible heat pump: Enter menu
1.2 and select “normal”.
If NIBE FLM is connected to another heat pump: Contact your in-
staller!
• External switch for changing the fan speed activated.
– Check any external switches.
GURGLING SOUND
• Not enough water in the water seal.
– Fill the water seal with water (see page 12)
• Choked water seal.
– Check and adjust the condensation water hose (see page 12).
NIBE FLMChapter 3 | Disturbances in comfort16

Detailed technical specifications for this product can be found in the in-
stallation manual (nibe.eu).
17Chapter 4 | Technical dataNIBE FLM
4 Technical data

ADDITIONAL HEAT
The additional heat is the heat produced in addition to the heat supplied
by the compressor in your heat pump. Additional heaters can be for ex-
ample, immersion heater, electric heater, gas/oil/pellet/wood burner or
district heating.
BRINE
Anti-freeze liquid, e.g. ethanol or glycol mixed with water, which trans-
ports heat energy from the heat source (rock/ground/lake) to the heat
pump.
BRINE SIDE
Brine hoses, any bore holes and the evaporator make up the brine side.
CIRCULATION PUMP
Pump that circulates liquid in a pipe system.
CLIMATE SYSTEM
The climate system can also be called the heating and/or cooling system.
The building is cooled or heated using radiators, under floor coils or
convector fans.
DISTURBANCES IN COMFORT
Disturbances in comfort are undesirable changes to the hot water/indoor
comfort, for example when the temperature of the hot water is too low
or if the indoor temperature is not at the desired level.
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.
NIBE FLMChapter 5 | Glossary18
5 Glossary

EFFICIENCY
A measurement of how effective the heat pump is. The higher the value
is the better it is.
EXHAUST AIR
The air that comes from the exhaust air device in the various rooms of
the accommodation, to NIBE FLM.
EXHAUST AIR DEVICES
Vents, usually in the ceiling, in the kitchen/bathroom/clothes closet where
the air is drawn in to be forwarded to NIBE FLM.
EXPANSION VESSEL
Vessel with brine or heating medium fluid with the task of equalising the
pressure in the brine or heating medium system.
EXTRACT AIR
The air from which the NIBE FLM has retrieved heat, and thereby cooled.
This air is blown out of the house.
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.
19Chapter 5 | GlossaryNIBE FLM

A
Alarm, 13
D
Disturbances in comfort, 13
Alarm, 13
Manage alarm, 13
Troubleshooting, 15
G
Glossary, 18
I
Important information
Installation data, 4
NIBE FLM – An excellent
choice, 7
Serial number, 6
Installation data, 4
M
Maintenance of NIBE FLM, 10
Regular checks, 10
Manage alarm, 13
N
NIBE FLM – An excellent choice, 7
R
Regular checks, 10
S
Serial number, 6
T
Technical data, 17
The function of the exhaust air
module, 9
The heating installation – the heart
of the house, 8
Troubleshooting, 15
NIBE FLMItem register20
Item register