nilan Compact P User manual

USER MANUAL
Compact P / Compact P Polar
CTS602 HMI BY NILAN
Version 4.10 - 19.06.2020
B24_Compact-P_GB

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Table of contents
General information
Safety ............................................................................................................................................................................................................ 3
Power supply ......................................................................................................................................................................................... 3
Heat pump domestic hot water ......................................................................................................................................................... 3
Introduction .................................................................................................................................................................................................. 4
Documentation ..................................................................................................................................................................................... 4
Type plate .............................................................................................................................................................................................. 4
User panel
Functions in the user panel ........................................................................................................................................................................ 5
Main screen elements .......................................................................................................................................................................... 5
Settings options on the main screen ................................................................................................................................................. 6
Warning and alarms ............................................................................................................................................................................. 7
Settings menu overview ..................................................................................................................................................................... 7
Service and maintenance
General information ................................................................................................................................................................................... 8
Regular maintenance ................................................................................................................................................................................. 8
Operation of the ventilation unit ....................................................................................................................................................... 8
Illustration of filter change ................................................................................................................................................................. 9
Service ........................................................................................................................................................................................................10
General cleaning .................................................................................................................................................................................10
Water trap ............................................................................................................................................................................................10
Heat exchanger ...................................................................................................................................................................................10
Checking the sacrificial anode ..........................................................................................................................................................11
Checking the safety valve .................................................................................................................................................................11
Check the air intake and outlet ........................................................................................................................................................11
Check ventilation ducts .....................................................................................................................................................................11
The heat pump ....................................................................................................................................................................................11
User settings
Setting the unit ..........................................................................................................................................................................................12
Turn off the ventilation unit .............................................................................................................................................................12
Operating function .............................................................................................................................................................................12
Alarm ....................................................................................................................................................................................................13
Show data ............................................................................................................................................................................................13
Date/Time ............................................................................................................................................................................................14
Week program .....................................................................................................................................................................................14
Heating of supply air ..........................................................................................................................................................................15
Domestic hot water ............................................................................................................................................................................17
After heating element .......................................................................................................................................................................17
Cooling ..................................................................................................................................................................................................18
Air humidity .........................................................................................................................................................................................19
CO2 Control ..........................................................................................................................................................................................20
Air exchange ........................................................................................................................................................................................20
Air filter ................................................................................................................................................................................................21
Temperature control .........................................................................................................................................................................22
Language ..............................................................................................................................................................................................22
Alarm list
Compact ......................................................................................................................................................................................................23
Alarm list ..............................................................................................................................................................................................23
Troubleshooting
Emergency operation domestic hot water ....................................................................................................................................25
Errors and solutions domestic hot water .......................................................................................................................................26
Technical data
EU/EC Declaration of Conformity ...................................................................................................................................................27
Ecodesign data - Hot water production ..........................................................................................................................................28
Disposal
The environment - part of the solution .................................................................................................................................................29
Ventilation unit ...................................................................................................................................................................................29

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General information
Safety
Power supply
Heat pump domestic hot water
The heat pump must undergo suitable service inspections under applicable legislation and regulations to keep it in good condition and
in compliance with safety and environmental requirements.
Responsibility for maintenance of the heat pump rests with the owner/user.
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, alway contact an authorised electrician to rectify the error.
CAUTION
Always disconnect the power to supply to the unit before opening the unit doors, for instance for installation, inspection,
cleaning and filter change.
CAUTION
Avoid direct contact with the heating system pipes in the heat pump as they can get very hot.
CAUTION
To protect the heat pump against damage, it is fitted with the following safety equipment.

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Introduction
Documentation
The following documents will be supplied with the unit:
• Quick guide
• Wiring diagram
In the Quick guide you will find important information regarding installation and start-up of the unit. If you require further information
regarding, for instance, installation of accessories or additional settings in the software, or if you need an extended user manual, the
following documents can be downloaded from the Nilan website:
• Installation instructions
• Software instructions
• User Manual
• Wiring diagram
The instructions can be downloaded from https://www.nilan.dk/en-gb/frontpage/download.
If you have questions regarding installation and operation of the unit after having read the instructions, please contact your nearest
Nilan dealer. A list of Nilan dealers is available on www.nilan.dk/forhandlere.
From factory, the unit has been tested and is ready for operation.
Type plate
On the inside, in the bottom right of the unit is Nilan's nameplate.
ATTENTION
The unit must be started up immediately after installation and connection to the duct system.
When the ventilation unit is not in operation, humidity from the rooms will enter the duct system and create condensate
water that can run out of the valves and cause damage to floors and furniture. Condensation may also form in the ven-
tilation unit, which can damage its electronics and fans.

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User panel
Functions in the user panel
Main screen elements
The main screen of the HMI user 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. Show hot water temperature
10. Access to the settings menu which contains more settings options
Menu icons Operation icons
Stop icon
Indicates that the unit is off
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
Domestic hot water icon
Appears when the unit produces hot water. Light-
ning is displayed when the power supply is active
De-icing icon
Appears when the heat pump defrosts

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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 press current fan speed level, the
set fan speed level will be displayed.
You can change the fan speed level by
using the up-and-down arrows followed
by the confirm icon (bottom right) or the
cancel icon (bottom left).
There may be a difference between set
fan speed level and the actual fan speed
level as the control system will override
the set level, for instance, at high/low air
humidity or during cooker hood opera-
tion.
If you press current room temperature,
the set room temperature will be
displayed.
You can change the room temperature by
using the up-and-down arrows followed
by the confirm icon (bottom right) or the
cancel icon (bottom left).
If you press the current hot water
temperature, the set hot water
temperature will be displayed.
You can change the hot water
temperature by using the up-and-down
arrows followed by the confirm icon
(bottom right) or the cancel icon (bottom
left).

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Warning and alarms
Settings menu overview
The settings menu is constructed to make it easy to navigate through.
If the ventilation unit is faulty or an error
occurs, there will be either a warning or
an alarm. The icon will appear in the top
right hand corner in the menu bar.
If you press the symbol, a brief descrip-
tion of the warning or the alarm will be
displayed.
You will find more detailed descriptions in
the "Alarm List" section of this document.
When the problem has been solved, you
can reset the warning or alarm by
pressing “Clear Alarm”.
A warning indicates that something requires attention, for instance that filters need changing.
The ventilation unit is in operation.
An alarm indicates a serious fault with the unit that is likely to require investigation by an expert.
The ventilation unit has stopped.
You navigate through the settings menu by pressing the arrow below or above.
If you want to access a menu, tap the text for that menu and it will open.

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Service and maintenance
General information
A ventilation unit from Nilan can last for many years if it is properly serviced and maintained. Ventilation units are often hidden away,
and they are therefore rarely given attention in everyday life. But just as you maintain your car, your ventilation unit will need servic-
ing regularly to keep it functioning properly.
If appropriate service and maintenance are not carried out, the ventilation unit may get damaged. It can also result in increased energy
consumption and a poorer indoor climate. Less air will run through the unit even if the fans are running faster. But the ventilation unit
does not operate well with dirty filters, a clogged up heat exchanger and dusty fans.
You can set an alarm in your calendar on your phone that will notify you when your ventilation unit is due a service. Alternatively, you
can make a service appointment with your local Nilan dealer or service company.
Regular maintenance
Operation of the ventilation unit
The control panel should be positioned where you will see it regularly. This will allow you to observe the operation of the ventilation
unit and it will ensure that you notice potential alarms.
You can also ensure that the unit operates as intended. It is unnecessary to adjust the settings and the unit continuously. The control
system will automatically regulate the operation. However, initially it may be necessary to finetune, for example, room temperature.
But once that is done, you should not keep readjusting it.
The temperature for the domestic hot water should be at miimum 51 ° C, to minimize the risk of legionella. Are you, for example. a large
family and therefore has a larger hot water consumption, the temperature may need to be set higher.
Filters
The primary purpose of the filters is to protect the ventilation unit and especially the heat exchanger and the fans that could otherwise
become damaged by dust and dirt.
Dirty filters result in a poorer indoor climate and a higher energy consumption. Dirty filters must therefore be replaced. Dirty filters
can also affect the humidity control system in the ventilation unit so it no longer works as intended.
The factory setting of the control system is set to 90 days, which will suit most installations. But if you live in a city close to a heavily
congested road, you may need to replace the filters more often. Conversely, if you live in a rural setting, you may not need to replace
filters quite as often.
The standard filters in the ventilation unit are ISO Coarse > 90% (G4). If you install a pollen filter ISO ePM1 50-65% (F7), you will not
need to replace the pollen filter as often, as its filter area is larger. It may then only be necessary to replace the pollen filter every sec-
ond or third time, depending on its condition.

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Illustration of filter change
1.Before opening the door, turn off the unit on the user
panel under ”Operation” in the settings menu..
2. Turn the thumb screws in the door at the top right of
the unit and open the door.
3. Remove the two filters 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.
Turn on the unit again.

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Service
General cleaning
The ventilation unit should be cleaned on the inside once a year. Dust can slip through the filters and mix with dampness from the ex-
tract air.
You may want to remove dust with a vacuum cleaner before wiping the ventilation unit inside. For this, use a slightly damp cloth with
a mild soap solution. Be careful around potentially sharp edges. Be careful not to get water into the electrical control system.
The ventilation unit should also be cleaned on the outside using a slightly damp cloth and 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
When the ventilation unit in cold periods runs with high heat recovery, condensation of the exhaust air takes place. It is important tha
there is free drainage form the condensate tray so that the water can drain out. If not, it will at some point run out of the unit door and
cause major water damage.
Procedure:
1. Pour water into the condensate tray
2. Close the ventilation unit door
3. Switch on the ventilation unit and let it run for 10 min.
4. Open the door of the ventilation unit and check that the water has run out and not back into the condensate tray
5. If the water has run out everything is ok
6. If the water has not run out, check the water strap and the entire drain for where it has stopped
Heat exchanger
The counterflow heat exchanger is a central part of the ventilation unit. It heats up the cold outdoor air with energy from the warm
extract air. To maintain a high level of heat recovery, it is important that the heat exchanger is not clogged with dirt.
Experience indicates that it should not be necessary to lift out and clean the heat exchanger every year. However, if it appears to be
dirty, you should lift it out and clean it.
The easiest way to clean the counterflow heat exchanger is in the shower. Use lukewarm water and rinse it well from both sides. Allow
it to drip off before remounting it in the ventilation unit.
WARNING
Stop the ventilation unit on the control panel and switch off the power supply for the unit before opening its front door.
ATTENTION
Iff the cooling function is deactivated, check your condensate drain every autumn befor the cold sets in.
(Condensation typically takes place at an outdoor temperature < 10 °C)