FläktGroup ILOX 397Plus Installation guide

FläktGroup
Brand
FläktGroup
Model
ILOX 397Plus
Category
Fireplaces
Type
Installation guide
OPERATION, INSTALLATION AND MAINTENANCE MANUAL
AIR HANDLING UNIT
ILOX 397PLUS
WWW.FLAKTGROUP.COM ILOX 397PLUS 10186
» Learn more on www.flaktgroup.com
or contact one of our offices
FG_DC10186GB_ILOX 397Plus_OP-IN-MA_201109_R0 © Copyright 2020 FläktGroup J8019012- 2301-GB
FläktGroup is the European market leader for smart and energy efficient Indoor Air
and Critical Air solutions to support every application area. We offer our customers
innovative technologies, high quality and outstanding performance supported by more
than a century of accumulated industry experience. The widest product range in
the market, and strong market presence in 65 countries worldwide, guarantee
that we are always by your side, ready to deliver Excellence in Solutions.
PRODUCT FUNCTIONS BY FLÄKTGROUP
Air Treatment | Air Movement | Air Diffusion | Air Distribution | Air Filtration
Air Management & ATD’s | Air Conditioning & Heating | Controls | Service
Air Handling Unit ILOX 397Plus - Operation, installation and maintenance manual
2
FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
Thank you for purchasing the ILOXair air handling unit. We have been
developing our products over the years with the aim of making them more
user-friendly. This user guide has also been written with this in mind. However,
if you feel that an aspect of the guide or the product needs to be improved, we
would be glad to hear from you. Our contact information can be found on web-
site
www.flaktgroup.com
.
More useful information and help, such as the following, is available on our
website
www.flaktgroup.com
:
• Instructions and guides
• Service call. Please have access to the unit’s product label (location on the
control box)
• Ordering original filters
CONTENT
Safety ................................................................................................................................... 2
OPERATION & MAINTENANCE (FOR THE USER)
Main components ........................................................................................................... 3
Electrical data, Control equipment .......................................................................... 4
Basic operation ...............................................................................................................5
Plus Touch panel.............................................................................................................5
Temperature control ......................................................................................................6
Additional control equipment .....................................................................................7
Maintenance .....................................................................................................................8
Condensation, water inside the unit .......................................................................9
Overheating protection, temperature alarms, other alarms .........................9
Maintenance schedule, Fan speed settings .....................................................10
INSTALLATION (FOR INSTALLER AND SERVICE PERSONNEL)
Dimensions and weight ..............................................................................................11
Duct connection, insulation of the ducts ............................................................12
Installation options and duct definitions ............................................................. 12
Mounting example ........................................................................................................ 13
Site of installation .........................................................................................................13
Installing the condensate removal pipe .............................................................. 13
Connecting the post heater water coil ................................................................ 14
Electrical installation ................................................................................................... 14
Control box ...................................................................................................................... 14
Internal connections .................................................................................................... 14
Connection diagrams .................................................................................................. 15
Physical connections for external control .......................................................... 17
CO
2
Control ...................................................................................................................... 17
Humidity Control ............................................................................................................ 17
Emergency stop ............................................................................................................17
Set-up menus - only for installer ...........................................................................18
Declaration of conformity ......................................................................................... 20
SAFETY
We recommend that you follow these instructions strictly. This way
you will ensure reliable operation of your equipment for many years to
come.
WARNINGS AND NOTES
This manual contains clearly marked warnings which are intended for
your personal safety.
Warning! Indicates the presence of a hazard which could
result in personal injury.
!
Note! Alerts the reader of important facts and conditions.
Warning! The device can be used by children from 8 years upwards and people (including children) with reduced
physical, sensory or mental capa bilities, or lack of experience and knowledge if they have received guidance or
information on how to use the device safely and understand the risks that can occur. Children should not play
with the appliance. Cleaning and maintenance is not carried out by children without supervision.
!
Warning! Installation, adjustment and commissioning that is described in this manual must be carried out by
competent, authorised personnel.
!
Warning! Use protective gloves during installation, service and maintanance.
!
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FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
OPERATION & MAINTENANCE (FOR THE
USER)
MAIN COMPONENTS
1. Counterflow heat exchanger
2. Extract air fan (behind sheet metal cover)
3. Supply air fan (behind sheet metal cover)
4. Post heater
5. Control equipment
6. Door hinges / latches
7. Supply air filter, ISO Coarse + ISO ePM1 55%
8. Extract air filter, ISO Coarse
9. Bypass damper
10. Condensate drainage
11. Hot water inlet and outlet connections (only with hot water coil post heater)
Condensate drainage, see chapter Dimensions and weight.
CASING
The outer and inner casing are made of galvanised steel with an inter-
mediate layer of 20 mm polyester fiber insulation. Corrosion class C3
and leakage class L3 (CEN class A).
FANS
The fans are driven by independently controllable energy-efficient EC
motors with stepless speed control.
HEAT EXCHANGER
The unit has a counterflow heat exchanger made of aluminium and
it has a temperature efficiency of up to 80%. An automatic defrosting
function with two individual sections, Termo ice is standard.
POST HEATER, ELECTRICAL
The 6 kW electrical post heater is used to heat the supply air tem-
perature when the counter flow heat exchanger is not able to recover
enough energy. It is also used when the defrosting function Termo ice
is active.
POST HEATER, HOT WATER COIL
Alternatively, a water coil can be used for post heating. The purpose of
the water coil is to raise the supply air temperature when the counter
flow heat exchanger is not able to recover enough energy.
FILTERS
The unit is fitted with a ISO Coarse pre-filter and ISO ePM1 55% filter in
the supply side and a ISO Coarse filter on the extract side. Fine filter is
made of paper materials.
PACKAGING
The units are delivered on a pallet wrapped in plastic wrap. Recycle
the wooden pallet to the energy or wood waste and the plastic wrap
material to plastic or energy waste. The printed material in the pack-
age can be recycled to the paper waste.
All of the printed material can be downloaded from our website
www.flaktgroup.com.
1
2 3 45
6
7 89
10 9 11
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FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
ELECTRICAL DATA, CONTROL EQUIPMENT
ELECTRICAL DATA
Postheater Electrical heater Hot water coil
Voltage (V) 400, 3-phase 230, 1-phase
Fan Power (W) 2 x 450 2 x 450
Post heater (W) 6350 –
Total Power (W) 7300 1000
Current (A) 3 x 10.6 4.5
CONTROL EQUIPMENT
The unit is equipped with an electronic control system, Plus controller.
The Plus controller handles fan speeds, by-pass dampers and electri-
cal post heater (accessory). Control connections are made in the con-
trol box on top of the unit. The control box has connectors for Modbus
connections, cooker hoods, Mosaik switch and Plus Touch panel. Addi-
tional sensors connections are also made in the control box.
FAN CONTROL
Depending on the controller used, up to four operating modes can be
selected (see accessories):
AWAY is used when nobody is at home for a longer period e.g. vaca-
tion.
NORMAL is used for normal ventilation air flow.
BOOST is used when there is a need for a higher ventilation air flow (it
will automatically revert after 60 minutes).
MAXIMUM generates full fan speed.
The fan speeds can be adjusted independently of each other for every
operating mode.
TEMPERATURE CONTROL
The Plus controller controls the by-pass dampers and the electrical
post heater (accessory) to maintain the supply temperature set point.
The electrical post heater is activated when the energy recovery from
the heat exchanger is insufficient.
TERMO ICE – AUTOMATIC DEFROSTING
The Termo ice function ensures an optimal annual efficiency and a
better indoor climate. The unit uses temperature sensors to detect if
there is frost forming in the heat exchanger and starts defrosting on
demand.
When Termo ice is activated the by-pass damper closes each heat
exchanger section at a time and directs the outdoor air through one
section as the warm extract air defrosts the other section of the heat
exchanger.
The unit continues normal operation after defrosting period.
COOLING RECOVERY
During summertime, if the extract air is cooler than the outdoor air, the
by-pass damper will close. The heat exchanger then recovers cooling
from the extract air. This primarily applies if there is some form of
cooling device in the house. When the extract air is warmer than the
outdoor air the by-pass damper will again be opened.
HUMIDITY
Optional humidity sensor for extract air. The unit can be controlled to
maintain the humidity below certain level via the Plus Touch panel.
CO2
Optional carbon dioxide sensor for extract air. The unit can be con-
trolled to maintain the carbon dioxide level below a certain level via the
Plus Touch panel.
MODBUS RTU
The unit has a Modbus RTU interface as standard. The unit can be con-
trolled via the Modbus in terface.
ALARMS
The unit has built-in alarms for filter change, sensor errors and freeze
protection if equipped with accessory water coil post heater.
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FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
BASIC OPERATION
The basic functions of the air handling unit can be controlled from the
following:
Plus Touch Panel Cooker hood Mosaik
MOSAIK CONTROL
Home
Boost
Home
Away
Mosaik is standard light switch sized controller with three operating
modes. The right switch controls whether the unit is in away mode or
normal operation and the left switch controls home or boost operating
mode when right switch is in normal mode.
COOKER HOOD CONTROL
The air handling unit’s operating modes can be controlled with a cook-
er hood. For more detailed information please read the cooker hood
manual. Using Iloxair cooker hoods is strongly recommended for en-
suring the compability.
PLUS TOUCH PANEL
Fan speed:
1/4 for Away
2/4 for Home
3/4 for Boost
4/4 for Maximum
Active alarms Active function
Menu
Automatic operation
Away
Boost
ON/OFF
OFF
Boost
Away
Automatic
Home
Home
The Plus Touch panel basic view.
PLUS TOUCH PANEL
With the Plus Touch panel it is possible to change for example fan
speeds, temperature set point, date and time.
TEMPERATURE SET POINT
It is possible to change the temperature set point and to read the tem-
perature of the different temperature sensors via the Plus Touch panel.
The temperature sensors are located inside the unit. This means that
they do not precisely reflect the actual outdoor or indoor air tempera-
tures.
WEEKLY SCHEDULES
The unit can be set to operate according to user-defined weekly
schedules. A setup wizard guides you through the basic set-up. It is
possible to edit the schedule for each day afterwards.
ALARMS
The Plus Touch panel shows alarms for example filter change, sensor
error and freeze protection (when a hot water post heater is used). For
more information regarding alarms see separate parts in this docu-
ment.
FAN OPERATING MODES
Several fan operating modes can be selected via the control panel
(accessory):
Away is used when nobody is at home for a longer period e.g.
vacation.
Home is used for normal ventilation air flow.
Boost, there are several variants:
• Boost is used when there is a need for a higher ventilation air flow.
• Boost 60 minutes sets the unit into BOOST mode for 60 minutes.
• Fireplace timer 15 minutes is used when the user wants to light a fire.
Maximum generates full fan speed.
Note! If a separate Away/Normal control switch is used, the switch
must be in the normal position to allow changes via the touch panel.
Air Handling Unit ILOX 397Plus - Operation, installation and maintenance manual
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FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
TEMPERATURE CONTROL
During cold periods the by-pass damper closes and the cold outdoor
air is led through the counter flow heat exchanger (winter mode). The
supply air will then be heated from the warm extract air. If the outdoor
air is cold and the heat energy recovered from the extract air is not
enough to achieve the supply air temperature set point the post heater
will activate in order to maintain the supply air temperature. During
warm periods when the heat recovery from the extract air is not need-
ed the by-pass damper opens and the outdoor air is led pass the heat
exchanger directly into the supply air (summer mode).
Winter mode Summer mode
TEMPERATURE CONTROL, ELECTRICAL HEATER
Temperature set point.
The supply air temperature set point is adjustable via the knob on the
front edge of the electrical box inside the unit. The temperature set
point can be adjusted between 12 and 26°C, recommended set points
being between 17°C and 20°C. It is also possible to set the tempera-
ture set point via the Plus touch panel (accessory). The electrical post
heater will not be activated unless the outdoor air temperature is be-
low the post heater activation temperature default being 26°C. Please
note that the temperature set point is not be mistaken to be the gener-
al indoor temperature. The general indoor temperature is to be handled
by the heating system.
TEMPERATURE CONTROL, WATER HEATER
The supply air temperature set point is adjustable via the radiator ther-
mostat inside the unit. The below figure describes how to adjust the
set point:
Temperature range for water flow temperature control.
Note! Position 3 or 4 on the radiator thermostat is recommended
during cold periods and * during warm periods.
* = 8°C (summer mode)* = 8°C (summer mode)
1 = 11°C
2 = 14°C
3 = 17°C
4 = 20°C
5 = 23°C
6 = 26°C
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FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
ADDITIONAL CONTROL EQUIPMENT
HOME/AWAY SWITCH
The Home/Away switch allows you to re-
duce the ventilation rate. To enable control
from an Plus Touch panel or other additional
control equipment connected to the unit, the
switch must be in the Home position.
FIREPLACE OR BOOST SWITCH
The switch may be used either as a fireplace
switch or a regular boost switch. When used
as a fireplace switch it changes the pressure
conditions in order to make it easier to light a
fire. When in use, the fireplace switch over-
rides any other switches.
CO2 SWITCH
The CO
2
switch measures the carbon dioxide
level in the room and boosts ventilation if the
set point level is exceeded. When the CO
2
level drops below the set point the fans re-
turn to their previous speed.
HUMIDITY SWITCH
The humidity switch boosts ventilation when
the relative humidity in the room exceeds the
set point. During the cold season, the set point
should be set to approximately 50%. During
the warm season, the set point should be
higher, approximately 70%. If the set point is
correct then the humidity switch boosts the
ventilation when using the shower or sauna.
The normal ventilation rate is resumed after approximately 1–2 hours.
During certain conditions the humidity level may be so high that unit
will stay in boost mode. In order to prevent this raise the humidity set
point.
3-SPEED OR 4-SPEED SWITCH
Easy to use switch for choosing between
three or four different operating modes.
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FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
MAINTENANCE
GENERAL
Filters, fans and the counter flow heat exchanger are very important
for the function and efficiency of the unit. it is therefore important that
these are kept clean and in good condition. We recommend a general
check of these parts during filter replacement, at least every 6 months.
For safety reasons, general caution should be observed during mainte-
nance of the unit. It is recommended to use protective gloves.
I
O
N
O
O
F
F
Before cleaning the fans, heat exchanger etc, the unit should always have the power
disconnected.
FILTER ALARM AND REPLACEMENT OF FILTERS
The filters for the extract and supply air should normally be replaced
twice a year. In areas where there is a lot of airborne particles such as
in cities it may be necessary to change the filters more often. The Plus
controller is set to remind the user to change the filter every 6 months.
It is possible to change the interval when using Plus Touch panel.
Follow the instructions below to change the filters:
1. Disconnect the power by using the power switch on the front cover
of the control box.
2. Open the door.
3. Remove the used supply air filters (ISO Coarse pre-filter and ISO
ePM1 55% filter) from the console.
4. Remove the used extract air ISO Coarse filter.
5. Insert the new supply air filters (ISO Coarse pre-filter and ISO ePM1
55% filter) and extract air filter (ISO Coarse filter).
6. Close the door and turn on the power switch on the front cover of
the control box.
7. (If equipped with accessory Plus Touch panel, reset the filter alarm.)
Warning! When replacing dirty filters, use of a face mask is
recommended (lowest class, FFP2).
!
Note! Only use filters recommended by FläktGroup at exchange. If
incorrectly selected filters are installed, there is a risk that perfor-
mance and air quality will not be achieved. FläktGroup disclaims
warranty liability if incorrect filters are installed upon replacement.
CLEANING THE FANS
The fans should be checked every two years. The fans should be
cleaned if there is dirt on the impellers. Note that the fans are not be
cleaned with water or other fluids. The fans are only to be cleaned with
a vacuum cleaner or a brush. It is strongly recommended to let an ed-
ucated professional maintenance the fans.
1. Remove the screws for the cover plates of the fans.
2. Disconnect the electrical contacts and remove the fans from the
unit.
3. Detach the impeller from the fan by removing the four screws.
4. Clean the fan and impeller with a brush.
5. Reinstall the cleaned fan in reverse order.
CLEANING OF THE HEAT EXCHANGER
Check that the surface of the heat exchange is not covered in dust.
Clean by either using a vacuum cleaner, compressed air or by show-
ering the heat exchanger with water. If this is not sufficient, apply a
grease-dissolving fluid such as dish soap and then shower the heat
exchanger.
Note! Acetone or a similar solvent must not be used. The heat ex-
changer is not to be soaked in water etc. Do not use sharp objects.
Make sure that the heat exchanger is completely dry before rein-
stalling.
The heat exchanger is pulled out of the unit. When reinstalling make sure that all the
gaskets are in the right position.
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FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
The heat exchanger is cleaned with either a vacuum cleaner or by showering it with
water.
CONDENSATION, WATER INSIDE THE UNIT
When the unit is running, moisture from the extract air may con-
densate in the heat exchanger. This applies mainly during autumn
and winter. The amount of moisture from the extract air depends on
moisture production in the house such as cooking and showering.
Typically in newly built houses the construction materials emit their
excess moisture during the first years. In the bottom of the unit there
is a drainage for removal of the condensate. It is important to regularly
check the function of drainage to prevent clogging. After the summer
the water in the water trap may have evaporated. This can result in a
gurgling noise. Remedy this by pouring water into the drain hole inside
the unit to fill the water trap.
The chromed ball-fitted water trap allows for a silent and reliable the disposal of
condensate.
OVERHEATING PROTECTION, TEMPERATURE
ALARMS, OTHER ALARMS
POST HEATER ELECTRICAL
The unit has an overheating protection device that switches off the
electrical post heater if the temperature is too high. If the overheating
protection device has triggered the user needs to manually reset this.
See figure below:
When the overheating protection has been triggered remove the plastic cover and
press the reset button on the front edge of the control box on top of the unit.
Note! If the overheating protection device has been triggered it is
important to find the overall cause of the problem.
POST HEATER, WATER
The unit has a freeze protection sensor that prevents the water heater
to break. If the water temperature drops below the limit value (adjusta-
ble from Plus Touch panel, default +10°C) the unit is stopped.
TEMPERATURE ALARM
The unit automatically identifies temperature sensor errors. In the
event of an error, arrange a service visit.
Overheating protection
reset button
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FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
MAINTENANCE SCHEDULE, FAN SPEED SETTINGS
MAINTENANCE SCHEDULE
Date of purchase of the unit: ............./.........../20.........
Fill in the record starting from the season of the year following the
purchase.
Period Replace the filters,
clean the unit
Vacuum the
exhaust air filter Check unit operation Clean the
heat exchanger
Check/clean the
fans
Year 1, spring x x
Year 1, autumn x x
Year 1, winter x
Year 2, spring x x x
Year 2, autumn x x
Year 2, winter x
Year 3, spring x x (x) (x)
Year 3, autumn x x
Year 3, winter x
Year 4, spring x x x
Year 4, autumn x x
Year 4, winter x
Year 5, spring x x (x) x
Year 5, autumn x x
Year 5, winter x
Year 6, spring x x x
Year 6, autumn x x
Year 6, winter x
Replacing the filters and cleaning the unit: Replace the filters according
to the instructions, vacuum the unit inside and wipe with a damp cloth
if necessary. Clean the water trap at the same time.
Note! Depending on the situation it may be necessary to change the
filters more often than indicated in this manual. In that case, the oth-
er maintenance actions should also be performed at more frequent
intervals.
Checking the operation of the unit: Listen to the fan sounds (do they
both work, is the sound balanced, are there noises that may indicate
bearing faults?). Inspect the condition of the unit visually.
Cleaning the heat exchanger: Clean the heat exchanger according to
the instructions. Perform the inspection every spring and clean if dirty
or every 1–2 years.
Checking/cleaning the fans: Perform the inspection every two years
and clean if dirty or every 4-5 years. The cleaning is strongly recom-
mended to be performed by a professional to ensure that the fans’
balance pads do not become dislodged.
Note! The ventilation ducts should be cleaned by a professional
every 5–7 years or according to the local regulations.
FAN SPEED SETTINGS
To find out about the fan speed settings, check the set-up record or
contact the person who performed the set-up. We recommend that
you write down the settings here for future reference.
Fan speed setting Supply fan Extract fan
Speed 1 V V
Speed 2 V V
Speed 3 V V
Speed 4 V V
Supply difference adjustment V V
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FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
INSTALLATION (FOR INSTALLER AND SERVICE PERSONNEL)
DIMENSIONS AND WEIGHT
MODEL L (LEFT) MODEL R (RIGHT)
1 = outdoor air (Ø315)
2 = supply air (Ø315)
3 = extract air (Ø315)
4 = exhaust air (Ø315)
K = condensate outlet (½" female thread) at the bottom
Weight: 180 kg
DUCT CONNECTIONS
42
13
K
h = 1196
278350207278
321216
1320
h = 1196
K
Ø315
378
745
2
31
4
409
Control box Control box
1320
1196
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FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
DUCT CONNECTION, INSULATION OF THE DUCTS
Note! During installation, the instructions relating to the unit and
duct insulation must be adhered to without deviation. Otherwise
there is a risk of condensation and moisture resulting in a major
damage.
DUCT CONNECTION
Exhaust air from the unit should only be connected to a ventilation duct
intended for the purpose. Connection should not be made to a chimney
or a smoke or gas duct. If the unit is being used in premises with for
example an open fireplace or heating stove with a chimney or smoke
or gas duct, an adequate supply air flow must be provided.
INSULATION OF DUCTS
In order to the unit working as intended the duct system should be
installed in a professional manner in accordance with local regulations
and following the ventilation plans made by a professional. This in-
cludes installation of the ducts through external walls containing insu-
lation and vapour barriers, external roofs and joists. If this is not done
in professional manner there is a risk for condensation, resulting in
possible damage to the unit, duct system or the structure itself due to
moisture. During replacement of older units, it is also necessary to en-
sure the quality of the ducts and duct insulation. Supply air ducts and
extract air ducts are filled with warm air. If those ducts are placed in
unheated spaces they must be insulated. The insulation should be ap-
plied externally and have a wind-proof surface layer. Outdoor air ducts
and exhaust air ducts are filled with cold air. If those ducts are placed
inside the building’s vapour barrier they must be insulated and have a
diffusion-proof (moisture-proof) surface layer. Given the high degree of
heat recovery achieved by unit the exhaust air also gets very cold and
must be thermally insulated.
INSTALLATION OPTIONS AND DUCT DEFINITIONS
If the unit is not installed immediately after delivery it should be stored
in a protected place under cover and in its original packaging. It is
recommended using some machinery while moving and lifting the unit.
Use protective gloves during the installation.
INSTALLATION OPTIONS
The unit shall be placed according to the ventilation plans made by
a professional. If there is no specific ventilation plans then the unit
should be installed according to one of the following options. The unit
is intended for indoors installation in a warm space and can be in-
stalled either on the floor or on a sturdy shelf.
Warning! In order to prevent personal injury: The unit must
be connected to the ducts before the power plug is con-
nected.
!
Warning! The unit must always be connected to a protective
earth socket.
!
DUCT DEFINITIONS
SILOX
EV
O
EXT
EXH
O = Outdoor air
S = Supply air
EXH = Exhaust air
EXT = Extract air
EV = Extract air valve
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FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
INSTALLING THE CONDENSATE REMOVAL PIPE
At the bottom of the unit, there is an outlet (1/2" internal thread) for
condensate removal. Fit a pipe or a rigid hose with an inner diameter
of at least 12 mm between the condensate outlet and a floor drain or
the waste connector of a wash basin. The condensate removal pipe
should not run directly into the sewer. A water trap has to be installed
in the condensate removal pipe. Make sure that the condensate re-
moval pipe is always leaning towards the floor drain or wash basin.
The condensate removal pipe should always be installed in warm con-
ditions. If the condensate removal pipe can not be installed in warm
conditions, a heating cable should be installed in order to prevent
freezing. Make sure to fill up the water trap.
MOUNTING EXAMPLE
Caution! To avoid the risk of moisture damage to the roof
and roof insulation, the outdoor air duct should not be instal-
led horizontally inside the roof insulation. Outdoor air duct
should be insulated with 100 mm mineral wool mat with a
moisture-proof surface layer in cold spaces.
The exhaust air duct from the unit should
preferably run straight to the roof, without any
horizontal runs inside the roof insulation.
The outdoor and exhaust
air duct must be insulated
with 100 mm mineral wool
mat with a moisture-proof
surface layer in cold spaces.
If cooker hood is connected
to the unit, EI30 insulation
should be used.
The condensate pipe must run into a floor drain, not directly into
the sewer. The water seal height of the water trap must be at
least 100 mm. There must be no more than one water trap and
no horizontal runs in the condensate pipe.
NB! If the unit is equipped with
a cooling coil, the supply air
duct must be insulated, e.g.
with Armaflex, or with insulation
covered with an airtight vapour
barrier.
The outdoor and exhaust air ducts must be
insulated with 100 mm mineral wool mat with a
moisture-proof surface layer in warm spaces.
The extract and supply
air ducts do not need any
insulation in warm spaces.
The extract and supply air
ducts must be insulated with
100 mm mineral wool mat
and preferably inside the
loose wool in cold spaces.
Installation example.
SITE OF INSTALLATION
The air handling unit should be installed in a heated space. Ambient
temperature should be above +10°C. The ILOX 397Plus is installed ei-
ther on the floor or on a sturdy shelf.
There are four adjustable
feet under the unit that
are used to set the unit
horizontal.
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FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
CONNECTING THE POST HEATER WATER COIL
Connect the water coil to the building’s heating system, for example in
parallel with the heating radiators. However, the water temperature of
an underfloor heating circuit is often too low, so connecting the coil to
a floor circuit is not recommended. Also, the coil must not be connect-
ed directly to hot water from a boiler without a mixing valve.
Supply and return water pipes are installed through the grommets and
fastened into the 15 mm compression fittings. The supply water should
be connected to the pipe which is connected to the thermostat valve.
The return pipe must be fitted with a vent valve at the highest point.
Before commissioning, once the system has been filled up and all air
is removed, make sure that water circulates in the coil. The system
may need to be vented once more after a few days. Also, make sure
that the fans are commissioned before the water is connected. The
water flow in the coil needs to be constant during cold weather to
avoid freezing.
Warning! Never connect the water coil to the domestic
water supply system.
!
Warning! The circulation pump should not be switched off
during the heating period. Also, the shut-off valves for the
coil should never be closed.
!
ELECTRICAL INSTALLATION
Main power for the unit is provided onto the terminal block located
in the control box. An external safety switch must be installed on the
connection cable before the unit. Electrical installation and connec-
tions for the unit must be made by a qualified electrician. The unit
is equipped with a service switch for switching off the power. When
installing accessories or other electrical connections, power should be
switched off by the safety switch. The unit is equipped with an electri-
cal box for connecting some of the basic accessories of the unit.
CONTROL BOX
A control box is used to make the control connections related to the
unit. The control box is mounted on top of the unit.
INTERNAL CONNECTIONS
The control board on top of the unit is used to make the physical con-
nections required for external control and to connect any of the follow-
ing: internal carbon dioxide transmitter, carbon dioxide switch, internal
humidity transmitter, humidity switch, emergency stop switch, Home/
Away switch and fireplace boost switch.
Air Handling Unit ILOX 397Plus - Operation, installation and maintenance manual
15
FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
CONNECTION DIAGRAMS
CONNECTION
Air Handling Unit ILOX 397Plus - Operation, installation and maintenance manual
16
FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
CONTROL FUNCTIONS
Air Handling Unit ILOX 397Plus - Operation, installation and maintenance manual
17
FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
PHYSICAL CONNECTIONS FOR EXTERNAL CONTROL
The unit can be controlled via physical controls such as the HOME/
AWAY switch. These types of controls override the Plus Touch panel
controls.
More detailed connection instructions are available in the electrical
connections diagram.
CO2 CONTROL
The unit can be controlled to maintain carbon dioxide below a certain
level by adjusting the operation mode. It is possible to use a internal
CO
2
transmitter or a CO
2
switch. See the connection diagram for elec-
trical connections.
HUMIDITY CONTROL
The unit can be controlled to maintain the humidity below a certain
level by adjusting the operation mode. It is possible to use a internal
humidity transmitter or a humidity switch. See the connection diagram
for electrical connections.
EMERGENCY STOP
An emergency switch can be used to stop the unit. This connection
is opto-isolated and requires an external control voltage of 24 VDC. If
necessary, the control voltage can be taken from terminals 37 (GND)
and 34 (24 VDC) on the control board.
AHU emergency
stop switch
1or 1wh
NOMAK
2×2×0.5
+0.5
NOMAK
2×2×0.5
+0.5
AHU emergency stop circuit opto-isolated
(requires an external 24 VDC supply)
The control voltage can be taken from
terminals 34 and 37.
AHU 1
37
GND
34
24 VDC
36
36
33
32
31
30
37
GND
34
24 VDC
36
36
33
32
31
30
AHU 2
AHU
emergency stop
1or
1or
1or
1va
1wh
1wh
AHU
emergency stop
An emergency stop circuit for a number of air handling units with the control voltage
taken from the PCB
Air Handling Unit ILOX 397Plus - Operation, installation and maintenance manual
18
FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
SET-UP MENUS - ONLY FOR INSTALLER
The unit can be set up using one of the following options:
PLUS TOUCH SCREEN
If the unit is not connected to an Plus Touch panel, it is possible to
use a service panel. Connect the service panel to the appropriate
port on the front cover of the control box. When the Plus Touch panel
has started up, go to the menu (in the upper left corner) → Settings
→ Down arrow → Maintenance Settings Menu → 4569 OK → Guided
Installation START. This commissioning wizard guides you through the
fan speed settings and supply air temperature setpoint (electric post
heater). More settings are available in the maintenance settings menu.
Press and hold an item for pop-up help. To select an item, press it
briefly.
PCB USER INTERFACE
On the electrical box there is a control knob, eight LED:s and a pro-
gramming button, all of which are connected to the PCB. To switch
from one set-up parameter to the next, press the button briefly. To
view the value of the current parameter, press and hold the button. To
change the value of the parameter:
1. Hold the button pressed down for 5 seconds
2. The value begins to flash
3. Keep the button pressed down
4. Rotate the control knob to change the value
5. Release the button, the selected value is confirmed
6. Wait for 10 seconds in order to leave the set-up mode
Control knob Push buttonEight LEDs 1-8
PCB user interface
1 2 3 4 5 6 7 8
1st press
2nd press
3rd press
4th press
5th press
6th press
7th press
8th press
9th press
10th press
Speed 1 (Away)
Speed 2 (Home)
Speed 3 (Boost)
Speed 4 (Maximum)
Supply fan correction
Max. speed limit for defrosting
2)
Post heater activation temp.
1)
Modbus communication speed
Modbus ID address
Speed 1
1) Outdoor temperature setting, see page 18. 2) See page 19.
The menu of the PCB user interface.
10V
9,5V
9,0V
8,5V
8,0V
7,5V
7,0V
6,5V
6,0V
5,5V
5,0V
4,5V
4,0V
3,5V
3,0V
Fan speed voltage settings
POST HEATER ACTIVATION TEMPERATURE
It is possible to set a temperature limit when the electrical post heater
is allowed to be active. In case the outdoor temperature is higher than
the selected value the post heater will not activate even if the supply
air temperature setpoint is not reached. In order to access this param-
eter press the button 7 times and select the activation temperature.
Please see picture Reheating set point (limit value) how the LED’s corre-
spond to the temperatures.
Note! It is possible to set the activation temperature even higher
with Plus Touch screen or service panel.
Note! In case the temperature limit is set too low there is a risk of
draft or condensation in case the heat recovery is not able to pro-
vide enough thermal energy to the supply air.
Reheating set point (limit value)
Air Handling Unit ILOX 397Plus - Operation, installation and maintenance manual
19
FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
ADJUSTING THE SUPPLY AIR TEMPERATURE SETPOINT
POST HEATER, ELECTRICAL
26°C
25°C
24°C
23°C
22°C
21°C
20°C
19°C
18°C
17°C
16°C
15°C
14°C
13°C
12°C
0°C
Temperature settings for electric reheating
It is possible to change the supply air temperature setpoint when the
unit is not in set-up mode (to leave the set-up mode do not press the
programing button for 10 s). This is done by rotating the control knob.
Alternatively, use the Plus Touch control panel and go to Settings →
Temperature. The default is 17°C.
POST HEATER, WATER
The supply air temperature setpoint is set via the thermostat attached
to the hot water coil.
FAN SPEED MODE
When the unit is not in set-mode or temperature setpoint mode the
LED:s on the front of the electrical box indicates the fan speed mode of
the unit.
LED 1 = Away
LED 2 = Normal
LED 3 = Boost
LED 4 = Maximum
LED 5 = Fireplace
LED 6 = Defrost mode
SUPPLY FAN VOLTAGE CORRECTION
In order to achieve accurate supply and extract air flows you might
have to adjust the supply fan speed with Supply fan voltage correction
function. With this function it is possible to set the supply fan control
voltage from -1,2V lower up to +1,2V higher compared to the exhaust
fan.
1. Press the button until LED’s from 5 to 8 light up (5th press).
2. Press the button and rotate the control knob to change the value
(see picture below).
3. Release the button and the selected value is confirmed.
0V
-0.2V
-0.4V
-0.6V
-0.8V
-1.0V
-1.2V
+0.2V
+0.4V
+0.6V
+0.8V
+1.0V
+1.2V
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
Note! This voltage correction applies to all fan speeds!
DEFROSTING MAXIMUM SPEED LIMITATION
It is possible to change the defrosting maximum speed limit. In order
to access this parameter press the button 6 times and select the con-
trol voltage as in the fan speed voltage settings.
Note! It is not possible to exceed this selected value during defrost-
ing in any way!
Air Handling Unit ILOX 397Plus - Operation, installation and maintenance manual
20
FläktGroup FG_DC10186GB_201109_R0 Specifications are subject to alteration without notice
DECLARATION OF CONFORMITY
ENCLOSURE II A
FläktGroup Finland Oy
Postal Address Street Address Telephone Telefax Reg. no:
FläktGroup Finland Oy Logistiikkakeskus Nat +358 20 44 23 000 Nat +358 20 44 23 011 2495875-8
KALEVANTIE 39 Rydönnotko 1 Reg. office:
20520 TURKU, FINLAND 20360 Turku, FINLAND Turku
FG_DC_1037GB_ILOX89PLUS_ILOX129PLUS_ ILOX199PLUS_DOC_20190920_R0
Declaration of Conformity
In accordance with:
EU Directive for Machinery, 2006/42/EC
EU EMC Directive, 2014/30/EU
EU Directive for Energy related Products ErP 2009/125/EC
EU RoHS Directive, 2011/65/EU
Manufacturer FläktGroup Poland Sp. z o.o
Ul. Poludniowa 2, Oltarzew
05-850 Ozarów Mazowiecki
Herewith declares that:
Product Type: Ventilation unit
Manufacturer: FläktGroup Sweden AB
Commercial name: ILOX86PLUS
ILOX89PLUS
ILOX129PLUS
ILOX199PLUS
The machine is designed and manufactured in accordance with the following standards, in relevant parts.
EN ISO 12100 Safety of machinery – General principles for design- Risk assessment and risk reduction
EN 60204-1 Safety of machinery; electrical equipment of machines; general requirements
EN 60335-1 Household and similar electrical appliances - Safety - Part 1: General requirements
EN 60335-2-40,31 Household and similar electrical appliances - Safety - Part 2: Particular requirements
EN 61000-6-1 Electromagnetic compatibility (EMC) - Part 6-1: Generic standards - Immunity for
residential, commercial and light-industrial environments
EN 61000-6-3 Emission standard for residential, commercial and light-industrial environments.
EN 50106 Safety of household and similar electrical appliances - Particular rules for routine tests
referring to appliances under the scope of EN 60335-1
EN 62233 Measurement methods for electromagnetic fields of household appliances and similar
apparatus with regard to human exposure
EN 50581:2012 Technical documentation for the assessment of electrical and electronic products with
respect to the restriction of hazardous sustances
A risk analysis has been made according to requirements of the Directive for Machinery.
Authorized To prepare technical documentation:
Ann-Sofie Andersson
Design- R&D
FläktGroup Sweden AB
Fläktgatan 1
551 84 Jönköping
The declaration applies only to the installation made according to FläkGroups instructions and assuming no
changes made to the unit.
Varsova 2019-06-01
Mariusz Zakrzewski, Operational Director, FläktGroup Poland Sp, Varsova
ENCLOSURE
II A
FläktGroup Sweden AB
Postal Address Street Address Telephone Telefax Reg. no:
FläktGroup Sweden AB Fläktgatan 1 Nat 036 - 19 30 00 Nat 036 - 19 31 40 556239-2463
S-551 84 Jönköping Int +46 36 19 30 00 Int +46 36 19 31 40 Reg. office:
Sweden Jönköping
10181GB_Ilox 397Plus Declaration of conformity(2A)201023
Declaration of Conformity
With the EU Directive for Machinery, 2006/42/EC
With the (EMC) Directive, 2014/30/EU
EU Directive for Energy related Products ErP 2009/125/EC (Commission Regulation (EU) No 1253/2014)
Manufacturer FläktGroup Sweden AB
Fläktgatan 1
551 84 Jönköping
Herewith declares that:
Product Type: Ventilation Unit
Manufacturer: FläktGroup Sweden AB
Commercial name: ILOX 397PLUS
The machine is designed and manufactured in accordance with the following standards, in relevant parts.
EN ISO 12100 Safety of machinery – General principles for design – Risk assessment and risk reduction
EN 60204-1 Safety of machinery – Electrical equipment of machines – General requirements
EN 61000-6-1 Electromagnetic compability (EMC) – Part 6-1: Generic standards – Immunity standard for
residential, commercial and industrial environments.
EN 61000-6-3 Electromagnetic compability (EMC) – Part 6-3: Generic standards – Emission standard for
residential, commercial and light-industrial environments.
EN 13053:2006 Ventilation for buildings – Air handling units – Ratings and performance for units,
components and sections
EN 1886:2007 Ventilation for buildings – Air handling units – Mechanical performance
A risk analysis has been made according to requirements of the Directive for Machinery.
Authorized To prepare technical documentation:
Ann-Sofie Andersson - R&D Technology
FläktGroup Sweden AB
Fläktgatan 1, 551 84 Jönköping
The declaration applies only to the installation made according to FläktGroups instructions and assuming no changes made to the unit.
Jönköping, 23.10.2020
Björn Norling, Quality Manager, FläktGroup Sweden AB, Jönköping
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FläktGroup ILOX 397Plus Installation guide

FläktGroup
Brand
FläktGroup
Model
ILOX 397Plus
Category
Fireplaces
Type
Installation guide
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