nilan CTS602 HMI User manual

USER MANUAL
CTS602 HMI BY NILAN
VPL28 (English)
Version 3.00 - 13.08.2019

TABLE OF CONTENTS
Safety
Power supply................................................................................................................................................................................................................................................................... 3
Disposal............................................................................................................................................................................................................................................................................................. 3
Ventilation unit............................................................................................................................................................................................................................................................. 3
Heatpump .......................................................................................................................................................................................................................................................................... 3
General information
Introduction...................................................................................................................................................................................................................................................................... 4
Type plate........................................................................................................................................................................................................................................................................... 4
Quick guide
Functions of control panel............................................................................................................................................................................................................................................ 5
Main screen elements........................................................................................................................................................................................................................................... 5
Settings options on the main screen.....................................................................................................................................................................................................6
Warnings and alarms.............................................................................................................................................................................................................................................. 7
Settings menu overview..................................................................................................................................................................................................................................... 8
Service and maintenance
Maintenance................................................................................................................................................................................................................................................................................ 9
Regular maintenance ............................................................................................................................................................................................................................................9
External cleaning ....................................................................................................................................................................................................................................................... 9
Water trap...........................................................................................................................................................................................................................................................................9
Filter replacement.....................................................................................................................................................................................................................................................9
Illustration of filter change in FU28 (accessory)..................................................................................................................................................................10
Illustration of bag filter change in FU28 (accessory)...................................................................................................................................................... 11
Service............................................................................................................................................................................................................................................................................................ 12
Annual service .......................................................................................................................................................................................................................................................... 12
Internal cleaning ..................................................................................................................................................................................................................................................... 12
Check the air intake and outlet .............................................................................................................................................................................................................. 12
Check ventilation ducts .................................................................................................................................................................................................................................. 12
The heat pump .......................................................................................................................................................................................................................................................... 12
User settings
Ventilation settings..........................................................................................................................................................................................................................................................13
Stop the unit................................................................................................................................................................................................................................................................. 13
Operating function................................................................................................................................................................................................................................................ 13
Alarm.................................................................................................................................................................................................................................................................................... 14
Show data........................................................................................................................................................................................................................................................................14
Date/Time.......................................................................................................................................................................................................................................................................15
Week program............................................................................................................................................................................................................................................................ 15
After-heating.............................................................................................................................................................................................................................................................. 17
Cooling.................................................................................................................................................................................................................................................................................17
Air humidity...................................................................................................................................................................................................................................................................18
CO2 .........................................................................................................................................................................................................................................................................................19
Air exchange.................................................................................................................................................................................................................................................................20
Air filter..............................................................................................................................................................................................................................................................................21
Temp. control.............................................................................................................................................................................................................................................................. 22
Language..........................................................................................................................................................................................................................................................................22
Alarm list
VPL unit..........................................................................................................................................................................................................................................................................................23
Alarm list ......................................................................................................................................................................................................................................................................... 23
Product data
Declaration of compliance............................................................................................................................................................................................................................ 25
2

Safety
Power supply
CAUTION
Always disconnect the power supply to the unit if an error occurs that cannot be rectified via
the control panel.
CAUTION
If an error occurs on electrically conductive parts of the unit, always contact an authorised
electrician to rectify the error.
CAUTION
Always disconnect the power supply to the unit before opening the unit doors, for instance for
installation, inspection, cleaning and filter change.
Disposal
Ventilation unit
Nilan’s units consist mainly of recyclable materials. They must, therefore, not be
mixed with household waste, but must be delivered to your local recycling center
for disposal.
Heatpump
Concerning disposal of units with heat pumps, it is important to contact the local
authorities for information about correct handling of these. The heatpump
contains the refrigerant R134a, which is harmful to the environment if not
handled correctly.
VPL28 (English) BY NILAN
3

General information
Introduction
ATTENTION
The unit must be started up immediately after installation and connection to the duct system.
When a ventilation unit is not in operation, humidity from the rooms may penetrate into the
ducts and create condensation. Condensate water may leak out of the valves and damage
furniture and floors. Condensation may also form inside the unit, which can damage its
electronics and fans.
The unit is delivered fully tested and ready for operation.
Type plate
On the right side of the unit you will find the Nilan type plate.
Note: Contact Nilan a/s with questions about the product, it is important to have the unit name and
serial No. (SN) ready. On the basis of this information, please contact service department find all
informations about the relevant aggregate and thus provide information and answer questions about
what the aggregate consists of/contains, as well as the software used.
4

Quick guide
Functions of control panel
Main screen elements
The main screen of the HMI panel contains the settings options and the information that an operator
mostly uses.
1. Shows the current room temperature in the
house, measured via the extract air.
2. Shows the current air humidity. If a CO2 meter
has been installed, it will be shown next to air
humidity.
3. Shows the current fan speed level.
4. Shows the current supply air temperature
5. Shows the current outdoor temperature
measured via the outdoor air intake
6. Shows the current discharge air temperature
7. Shows the menu icons listed below
8. Shows the mode icons listed below
9. Access to the settings menu which contains
more settings options
Menu icons Mode icons
Stop icon
Indicates that the unit has stopped
Compressor icon
Indicates that the compressor is active
User selection icon
Indicates that the user selection function
is active
Heating icon
Indicates that the unit is heating up the
supply air via the compressor or the
after-heating element
Week program icon
Indicates that the week program function
is active
Cooling icon
Indicates that the unit is cooling the
supply air via the compressor or the
bypass
Alarm icon
Is displayed during alarms or warnings
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Settings options on the main screen
The settings options which the user needs in daily life can all be controlled from the main screen of the
panel.
If you select the option of current room temperature, the
desired room temperature will be displayed.
The desired room temperature can be adjusted by pressing
the up-or-down arrows followed by the cancel icon (bottom
left) or the accept icon (bottom right).
If you select the option of current fan speed level, the
desired fan speed level will be displayed.
The desired fan speed level can be adjusted by pressing the
up-or-down arrows followed by the cancel icon (bottom left)
or the accept icon (bottom right).
6

Warnings and alarms
Should an error occur in the operation of the unit, a warning or an alarm will be displayed. A warning will
appear in the top righthand corner in the menu bar.
If you press the symbol, a description of
the warning or the alarm will be displayed.
The warning or the alarm can be reset by
pressing "Clear Alarm".
A warning indicates that something requires attention, for instance that filters need
changing.
The unit operates normally.
An alarm indicates a serious fault with the unit that is likely to require investigation by
an expert.
The unit has stopped.
VPL28 (English) BY NILAN
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Settings menu overview
The settings menu is constructed to make it easy to navigate through.
8

Service and maintenance
Maintenance
Regular maintenance
Your Nilan ventilation unit will last for many years if it is correctly maintained. Correct maintenance
will also ensure that the unit runs optimally at all times with low energy consumption.
In the following we point out the regular maintenance which you can perform yourself and the annual
service which should be carried out by a professional.
External cleaning
The ventilation unit
The outside of the unit can be cleaned with a mild soap solution.
The ceiling valves
Over time a ring may develop round the inlet valves. This is a natural process and is due to dust in the
room air, not to defective filters or failure to change filters.
As very few painted ceilings are washable, you are recommended to vacuum round the valve and then
wipe the area with a damp cloth.
It is a good idea to dismantle and clean the valves when necessary. The valves have been set by the
installer for a specific airflow, so it is important not to rotate them, as this will change the setting and
unbalance the ventilation system.
Water trap
The water trap can dry out and prevent water from draining from the condensate tray, because air will
then blow into the unit. Condensate water will accumulate in the condensate tray. This will eventually
overflow and potentially cause water damage to the surface supporting the unit.
The water trap should therefore be checked regularly and filled with water, especially in the summer
when the risk of the water trap drying out is highest.
Filter replacement
The purpose of the filters is to protect the fans and the heat exchanger from dust and dirt, which may
cause damage.
For operation to run smoothly, it is important to change the filters as required. The filter timer in
Nilan’s control system is set by default to indicate that filters should be replaced after 90 days, but this
can be changed as required to 180 or 360 days.
If the filters are not changed, ventilation will lessen. This may cause the indoor climate to deteriorate
and affect the automatic humidity control system of the unit.
VPL28 (English) BY NILAN
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Illustration of filter change in FU28 (accessory)
1. Switch off the unit on the control panel before opening
the door.
2. The trunk fittings open on both sides and the door is
lifted out
3. Remove the two filters in the right side from the unit 4. It is advisable that you vacuum the filter chambers for
potential dirt and dust
5. Remove the filter sheet from the filter frame 6. Keeping the smooth side facing downwards, place the
new filter sheet in the filter frame
7. Press the filter sheet firmly in place and carefully push
it to the sides of the filter frame. The filter is placed back
in the unit with filter mat upward
8. In the ALARM menu on the control panel, press the
alarm symbol at the top right and reset the alarm here.
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Illustration of bag filter change in FU28 (accessory)
1. 1. Switch off the unit on the control panel before
opening the door.
2. Loosen the screws in the front cover and lift the door
out
3. Remove the two filters in the right side from the unit 4. It is advisable that you vacuum the filter chambers for
potential dirt and dust
5. The new filter is placed in the marked tracks and the
door is closed again.
6. In the ALARM menu on the control panel, press the
alarm symbol at the top right and reset the alarm here.
VPL28 (English) BY NILAN
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Service
Annual service
It is important to perform an annual service on the unit to ensure it will continue to perform optimally
with low energy consumption and long service life.
You are recommended to take out a service agreement with the installer, as certain elements of the
service require an authorised technician.
Internal cleaning
For hygienic reasons, it is important that the unit undergoes annual internal cleaning. This will prevent
the formation of fungus and bacteria which impair the internal air quality.
• Wipe down the internal plate parts and pipes with a damp cloth and a mild soap solution.
• Check and clean the evaporator coil.
• Check and clean the counterflow heat exchanger. If necessary, it may be removed and rinsed with a
shower head.
• Clean the condensate trays with a damp cloth and a mild soap solution.
• Check the condensate outlet to make sure the water can exit freely.
Check the air intake and outlet
It is important for operation of the unit that air can freely move through the air intake and outlet.
If roof stacks have been fitted to the air intake and outlet, check that they are not blocked with birds'
nests, leaves or other dirt which can hamper air passage.
If, instead of roof stacks, grilles have been mounted in facades or eaves, check that they are not
clogged with leaves or dirt. Grilles are particularly likely to become clogged.
Check ventilation ducts
It is important for operation of the unit that there is free air passage through the ventilation ducts.
After some years of operation, dirt will attach itself to ventilation ducts or tubes, and accumulations
may lead to higher pressure drop in the ducts, leading to higher power consumption. It is therefore
important to clean out the ducts when too much dirt has collected.
After attending to the inlet and outlet valves, it will be advisable to have them adjusted again, to
ensure optimum operation of the ventilation system.
However, it will not be necessary to clean ducts more than every few years.
The heat pump
The heat pump must be inspected in accordance with applicable laws and regulations, such that it is
kept in good condition and meets safety and environmental requirements.
The installer is obliged to inform the owner/user about applicable laws and regulations.
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User settings
Ventilation settings
Stop the unit
If it is necessary to open the doors while servicing the unit, for instance when changing filters, the unit
must be turned off.
The functions of the unit are activated in Settings under Operation.
If the unit is off, an icon appears on the main screen.
Operation
↳Operation Settings:
Description:
Off / On
The unit must be turned off before the doors are
opened during a service
Operating function
You can program the unit to operate in “Auto”, “Heating” or “Cooling” mode.
ATTENTION
The "Heating" and "Cooling" functions overrule the week program. If a week program has been
set up, the mode will automatically change to “Auto” at the next change in the week program.
Operating function
↳Auto Settings:
Standard setting:
Description:
Auto / Cooling / Heating
Auto
Auto: The unit operates in accordance with the
selected values
Cooling: The unit operates in accordance with the
selected values, but cooling is possible in winter mode
if the preconditions for cooling are present.
Heating: The unit operates in accordance with the
selected values, but the bypass damper cannot be
opened and active cooling not be activated even if the
preconditions are present.
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Alarm
You can read warnings and alarms in the "Alarm" menu. It is likewise possible to reset warnings and
alarms in this menu.
When a warning or an alarm has been triggered, an icon appears on the main screen
Alarm
↳Alarm number and name Description: When selecting this, a list will appear showing the
alarm ID number, information about the type of alarm,
and whether it is critical or not. (See the alarm list for
more information)
You can approve the alarm by selecting "Clear Alarm”
ATTENTION
When an alarm is active, it cannot be reset in the panel. When the alarm has been resolved, it will
figure as inactive and it can be reset by selecting "Clear Alarm”.
Show data
It is possible to read off current data for the unit.
Show data
↳Operating state Description: Shows the operating setting in which the unit is
running.
↳T1 Outdoor air Description: Shows the outdoor temperature before reaching the
pre-heating element.
↳T2 Supply air Description: Shows the supply air temperature. If an after-heating
element has been installed, T7 will be shown instead.
↳T5 Condenser Description: Shows the condenser temperature.
↳T6 Evaporator Description: Shows the evaporator temperature.
↳T7 Supply air Description: Shows the supply air temperature if an after-heating
element has been installed. Otherwise T2 will be
shown.
↳T10 Extract air/Room Description: Shows the current room temperature as measured in
the extract air.
↳Air humidity Description: Shows the current air humidity in the dwelling.
↳CO2 Description: Shows the current CO2 level in the dwelling (only if
installed).
↳Supply air fan Description: Shows the level at which the supply air fan is
operating.
↳Extract air fan Description: Shows the level at which the extract air fan is
operating.
↳Unit information Description: Press "Unit information" for more information.
↳Unit type Description: Shows the name of the product the software has been
set to work with.
↳Software version Description: Shows the installed software version.
↳Panel software Description: Shows installed software version on the panel.
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Date/Time
It is important to set date and time correctly. It makes it easier to localise errors indicated in an error
report. When logging data, it is important to be able to follow the history. The time is shown under
“Date / Time” in the display.
Date / Time
↳Year Description: Select "Year" in the panel and then select the correct
year.
↳Month Description: Select "Month" in the panel and then select the correct
month.
↳Day Description: Select "Day" in the panel and then select the correct
day.
↳Hour Description: Select "Hour" in the panel and then select the correct
hour.
↳Minute Description: Select "Minute" in the panel and then select the correct
amount of minutes.
Week program
You can program the unit to run in accordance with specific settings at fixed times during the week via
a week program.
On the main screen an icon will be displayed when the week program is active
Week program
↳Select program Description: You can select from the Programs 1, 2, 3 or off.
↳Edit program Description: The selected week program is now active and can be
edited.
↳Monday Description: You can select either Monday, Tuesday, Wednesday,
Thursday, Friday, Saturday or Sunday.
↳Function 1 Description: Under each function, you can set time, temperature
and fan speed level.
↳Start time Settings:
Standard setting:
Description:
Hours and minutes
6:00
Set the time for the program to start.
The program will run until the next change in the week
program.
↳Ventilation Settings:
Standard setting:
Description:
Level 1 / Level 2 / Level 3 / Level 4 / Off
Level 3
Select the desired fan speed level here.
↳Temperatures Settings:
Standard setting:
Description:
5 - 40 °C
22 °C
Set the desired room temperature here.
↳Function 2 Under each function, you can set time, temperature
and fan speed level.
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↳Start time Settings:
Standard setting:
Description:
Hours and minutes
8:00
Set the time for the program to start.
The program will run until the next change in the week
program.
↳Ventilation Settings:
Standard setting:
Description:
Level 1 / Level 2 / Level 3 / Level 4 / Off
Level 1
Select the desired fan speed level here.
↳Temperatures Settings:
Standard setting:
Description:
5 - 40 °C
22 °C
Set the desired room temperature here.
↳Function 3 Description: Under each function, you can set time, temperature
and fan speed level.
↳Start time Settings:
Standard setting:
Description:
Hours and minutes
15:00
Set the time for the program to start.
The program will run until the next change in the week
program.
↳Ventilation Settings:
Standard setting:
Description:
Level 1 / Level 2 / Level 3 / Level 4 / Off
Level 3
Select the desired fan speed level here.
↳Temperatures Settings:
Standard setting:
Description:
5 - 40 °C
22 °C
Set the desired room temperature here.
↳Function 4 Description: Under each function, you can set time, temperature
and fan speed level.
↳Start time Settings:
Standard setting:
Description:
Hours and minutes
22:00
Set the time for the program to start.
The program will run until the next change in the week
program.
↳Ventilation Settings:
Standard setting:
Description:
Level 1 / Level 2 / Level 3 / Level 4 / Off
Level 1
Select the desired fan speed level here.
↳Temperatures Settings:
Standard setting:
Description:
5 - 40 °C
22 °C
Set the desired room temperature here.
↳Functions 5 and 6 Settings:
Standard setting:
Description:
Under each function, you can set time, temperature
and fan speed level.
Off
The program will run until the next change in the week
program.
↳Reset program Description: You can reset the program by selecting the approve
icon.
16

After-heating
This menu is only displayed if an after-heating element has been installed.
ATTENTION
An after-heating element is not standard, but it can be purchased as an accessory.
If you wish to control the supply air temperature, an after-heating element must be installed. An after-
heating element allows you to control the supply air temperature, regardless of the outdoor
temperature.
An external electrical or water after-heating element can be installed in the supply air duct.
After-heating
↳Activate Settings:
Standard setting:
Description:
Off / On
Off
You can turn the after-heating on or off here.
Cooling
The unit can cool the dwelling via active cooling by the heat pump. For the unit to switch to cooling
mode it must operate in summer mode, or you must activate cooling in “Operating function”.
Active cooling:
If the room temperature (measured in the extract air) is higher than the desired room temperature +
the cooling setpoint, the compressor will start up and begin active cooling of the supply air. The
compressor will stop when the room temperature falls below the cooling setpoint -1ºC.
Cooling
↳Cooling setpoint Settings:
Standard setting:
Description:
Off / +1 / +2 / +3 / +4 / +5 / +7 / +10 ºC
Off
Off: Active cooling is deactivated.
Setpoint + X ºC: Indicates when active cooling is to
start. The setpoint is the desired room temperature as
selected on the front of the panel.
↳Ventilation in connection with cooling Settings:
Standard setting:
Description:
Off / 2 / 3 / 4
Off
Off: The fan speed level does not change when the unit
switches to cooling mode.
Level 2-4: Select the fan speed level you want the unit
to switch to when in cooling mode. This happens
already at bypass cooling.
VPL28 (English) BY NILAN
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Air humidity
The primary purpose of ventilation is to extract humidity from the house so it does not damage the
building, and to achieve a good indoor climate. During long periods with sub-zero temperatures, air
humidity in the house may fall to a level that is critical for the building and for the indoor climate.
Wooden floors, furniture and walls can be damaged by very dry air, which also whirls up dust, resulting
in a poor indoor climate.
This is rectified by an integrated humidity control system that maintains good, relative air humidity.
When the average air humidity in the house falls below a set level (default set at 30%), ventilation may
be reduced. It will typically only be for a short period of time. This will help avoid further reduction of
the air humidity in the house.
The humidity control system also has a function that allows increased ventilation, should the air
humidity increase, for instance when having a bath. The risk of mould growth in the bathroom is
reduced, and the bathroom mirror will rarely steam up.
The humidity control system follows the average air humidity level measured over the previous 24
hours. In this way the system automatically adapts to summer and winter conditions.
Air humidity
↳Vent.low humidity Settings:
Standard setting:
Description:
Level 1 / Level 2 / Level 3 / Level 4 / Off
Level 1
At low humidity, the unit changes to the set fan speed
level.
↳Low humidity level Settings:
Standard setting:
Description:
15 ↔45 %
30 %
The control system calculates an average air humidity
level measured over the previous 24 hours. If the
average air humidity in the extract air falls below this
level, the "Low humidity" function will be activated.
Note! The function is only active in winter mode.
↳Vent.high humidity Settings:
Standard setting:
Description:
Level 2 / Level 3 / Level 4 / Off
Level 3
At high humidity levels, for instance when having a
bath, the unit changes to the set fan speed level.
↳Max time high humidity Settings:
Standard setting:
Description:
1 ↔180 minutes / Off
60 minutes
The function “High humidity” stops when actual
humidity falls below 3% above the average air
humidity.
The run of this function has been time limited.
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CO2
This menu is only displayed if a CO2 sensor has been installed.2 sensor.
ATTENTION
CO2 A CO2 sensor is not a standard part of all units, but may be purchased as an accessory.
If the number of people using a building varies considerably, controlling ventilation through the CO22
level in the extract air may be a good solution. This function is often used in offices and schools where
use varies greatly during the day and during the week.
CO2
↳Vent.high CO2 level Settings:
Standard setting:
Description:
Level 2 / Level 3 / Level 4 / Off
Level 3
Here you indicate the fan speed level at which the unit
is to operate at high CO2 level.
↳High CO2 level Settings:
Standard setting:
Description:
650 ↔2500 ppm
800 ppm
Here you indicate the CO2 level at which the unit is to
switch to high fan speed level.
↳Normal CO2 level Settings:
Standard setting:
Description:
400 ↔750 ppm
600 ppm
Here you indicate the CO2 - level at which the unit is to
switch to normal control.
VPL28 (English) BY NILAN
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Air exchange
Low humidity in the dwelling can be prevented by reducing ventilation at low outdoor temperatures.
This function can be used in countries with regular sub-zero temperatures and at high altitudes where
the outdoor air is very dry.
This function can also be used at cold outdoor temperatures if no after-heating element has been
installed, and the supply air feels too cold.
Air exchange
↳Type of ventilation Settings:
Standard setting:
Description:
Energy/Comfort
Energy
Energy: Here, an energy-optimized operation is
ensured by regulating the supply air in relation to the
set temperature curve.
Comfort: Here, the air change is always balanced. The
ventilation level on the supply air and extract air is
always the same.
↳Low temperature curve Settings:
Standard setting:
Description:
15 ↔46 °C
38 °C
When curve controlled, the supply air will be temperate
at a time, as a ventilation step is regulated down or up.
Min. curve is level 1
↳High temperature curve Settings:
Standard setting:
Description:
39 ↔60 °C
50 °C
When curve controlled, the supply air will be temperate
at a time, as a ventilation step is regulated down or up.
Max. curve is level 4
↳Low temperature compressor start Settings:
Standard setting:
Description:
Off / 0 ↔15 °C
Off
Here you indicate whether, at low outdoor
temperatures, the heat pump is to start up even if
heating is not required.
↳Winter low vent. Settings:
Standard setting:
Description:
Level 1 / Level 2 / Level 3 / Off
Off
Here you select the fan speed level at which the unit is
to operate at low outdoor temperatures.
↳Level winter low Settings:
Standard setting:
Description:
-20 ↔10 °C
0 °C
Here you indicate the outdoor temperature at which
operation is to change to "Winter low".
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