nilan Compact P Polar EK 6 kW CTS 700 User manual

Compact P / Compact P Polar - AIR9/AIR9+ (English)
Version 3.00 - 02.09.2020
INSTALLATION INSTRUCTIONS
CTS700 TOUCH BY NILAN

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Dimensional drawing - external unit....................................................................................................................................................................................................14
TABLE OF CONTENTS
Safety
Starting the external unit ................................................................................................................................................................................................................................... 6
Power supply....................................................................................................................................................................................................................................................................6
Heat pump domestic hot water.....................................................................................................................................................................................................................6
Heat pump for central heating....................................................................................................................................................................................................................... 6
Dsiposal............................................................................................................................................................................................................................................................................................. 7
Ventilation unit.............................................................................................................................................................................................................................................................. 7
Heat pump...........................................................................................................................................................................................................................................................................7
General information
Introduction .................................................................................................................................................................................................................................................................................. 8
General information prior to installation............................................................................................................................................................................................8
Unit type............................................................................................................................................................................................................................................................................................8
Product description ..................................................................................................................................................................................................................................................8
The installation's internal unit....................................................................................................................................................................................................................10
The external unit.......................................................................................................................................................................................................................................................11
Overview of temperature sensors ........................................................................................................................................................................................................12
Dimensional drawing - internal unit......................................................................................................................................................................................................13
Pipe diagram ................................................................................................................................................................................................................................................................ 15
Accessories ................................................................................................................................................................................................................................................................................16
Electrical pre-heating element for frost protection ............................................................................................................................................................16
Pollen filter......................................................................................................................................................................................................................................................................16
EM-box................................................................................................................................................................................................................................................................................16
CO2 sensor......................................................................................................................................................................................................................................................................16
Safety group .................................................................................................................................................................................................................................................................16
Safety features..........................................................................................................................................................................................................................................................17
Flexible sound damper........................................................................................................................................................................................................................................17
Trolley .................................................................................................................................................................................................................................................................................17
SHW hot water tank..............................................................................................................................................................................................................................................17
Installation
Installing the internal unit........................................................................................................................................................................................................................................... 18
Transport into the dwelling ..........................................................................................................................................................................................................................18
Positioning of unit ...................................................................................................................................................................................................................................................18
Installing the external unit ......................................................................................................................................................................................................................................... 19
Installation transport of external unit ...............................................................................................................................................................................................19
Sound data......................................................................................................................................................................................................................................................................19
Installing the external unit............................................................................................................................................................................................................................. 20
Fixing of external unit to substrate......................................................................................................................................................................................................21
Foundation .....................................................................................................................................................................................................................................................................21
Condensate drain.................................................................................................................................................................................................................................................... 22
Electrical installation
Safety ..................................................................................................................................................................................................................................................................................23
Connections overview ........................................................................................................................................................................................................................................23
User panel ....................................................................................................................................................................................................................................................................................24
Touch Panel................................................................................................................................................................................................................................................................... 24
Dimensional drawing user panel..............................................................................................................................................................................................................24
Placement of the Touch panel....................................................................................................................................................................................................................25
Mounting the wall bracket..............................................................................................................................................................................................................................26
Electrical connection of the unit...........................................................................................................................................................................................................................27
Safety ..................................................................................................................................................................................................................................................................................27
Compact P AIR............................................................................................................................................................................................................................................................ 27
Change from 400V to 230V .........................................................................................................................................................................................................................28
Electrical connections accessories.....................................................................................................................................................................................................................29
External electrical pre-heating element..........................................................................................................................................................................................29

Compact P / Compact P Polar - AIR BY NILAN
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CO2 sensor.......................................................................................................................................................................................................................................................................30
Cooker hood and EM-box ............................................................................................................................................................................................................................... 32
SHW hot water tank...............................................................................................................................................................................................................................................33
Other electrical connections.....................................................................................................................................................................................................................................34
User selection 1 ..........................................................................................................................................................................................................................................................34
User selection 2 ......................................................................................................................................................................................................................................................... 35
External room sensor............................................................................................................................................................................................................................................36
Fire protection ............................................................................................................................................................................................................................................................. 36
Common alarm ........................................................................................................................................................................................................................................................... 37
External heat supply..............................................................................................................................................................................................................................................37
External underfloor heating control..................................................................................................................................................................................................... 38
Smart Grid........................................................................................................................................................................................................................................................................ 38
Connecting EHD damper................................................................................................................................................................................................................................... 39
BAH Geothermal heater....................................................................................................................................................................................................................................40
Active cooling function ....................................................................................................................................................................................................................................... 41
Plumbing installation
Condensate drain, internal unit..............................................................................................................................................................................................................................42
Important information.........................................................................................................................................................................................................................................42
Hot water tank......................................................................................................................................................................................................................................................................... 43
Connection overview........................................................................................................................................................................................................................................... .43
Connection....................................................................................................................................................................................................................................................................... 43
Hot water circulation............................................................................................................................................................................................................................................. 44
Supply heat exchanger........................................................................................................................................................................................................................................44
Softened water ...........................................................................................................................................................................................................................................................44
Central heating .......................................................................................................................................................................................................................................................................45
Water connection overview, internal unit.......................................................................................................................................................................................45
Connections list, external unit..................................................................................................................................................................................................................... 46
Insulation of hoses from the outdoor unit.......................................................................................................................................................................................47
Check list for the central heating system prior to start-up..........................................................................................................................................47
Plumbing connections for accessories ............................................................................................................................................................................................................ 48
Safety group.................................................................................................................................................................................................................................................................. 48
Safety group with anti-scald protection...........................................................................................................................................................................................49
Hot water heater....................................................................................................................................................................................................................................................... 50
Connecting to SHW hot water...................................................................................................................................................................................................................... 51
Connecting to supplementary coil in SHW hot water tank.............................................................................................................................................52
Connecting to DHW hot water tank........................................................................................................................................................................................................ 52
Ventilation mounting
Duct system ............................................................................................................................................................................................................................................................................... 53
Legislation........................................................................................................................................................................................................................................................................ 53
Ducts...................................................................................................................................................................................................................................................................................... 53
Unit.......................................................................................................................................................................................................................................................................................... 53
Extract air......................................................................................................................................................................................................................................................................... 54
Supply air...........................................................................................................................................................................................................................................................................54
Roof stacks......................................................................................................................................................................................................................................................................54
Initial regulation..................................................................................................................................................................................................................................................................... 55
Important information.........................................................................................................................................................................................................................................55
Initial regulation connectors..........................................................................................................................................................................................................................55
Pressure fall diagram............................................................................................................................................................................................................................................55
Startup
Central heating........................................................................................................................................................................................................................................................................ 56
Filling with water........................................................................................................................................................................................................................................................ 56
Topping up water...................................................................................................................................................................................................................................................56
Check the particle filter ..................................................................................................................................................................................................................................... 56

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Troubleshooting
Emergency operation...................................................................................................................................................................................................................................................... 57
Emergency operation domestic hot water.....................................................................................................................................................................................57
Emergency operation central heating............................................................................................................................................................................................... 58
Domestic hot water.............................................................................................................................................................................................................................................................59
Errors and solutions domestic hot water.......................................................................................................................................................................................... 59
Central heating....................................................................................................................................................................................................................................................................... 59
Failures and solutions central heating................................................................................................................................................................................................ 59

Compact P / Compact P Polar - AIR BY NILAN
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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.
Heat pump for central heating
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:
• Electronic temperature monitoring
CAUTION
To secure the heat pump against damages, it is fitted with the following safety equipment
•
•
•
Expansion systems for central heating and buffertank
Safety valve for central heating and buffertank
Low and high pressure switch for compressor
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.
Safety
Starting the external unit
The external AIR unit is equipped with a compressor heater, which heats up the compressor prior to
starting and in case of low outdoor temperatures. This facilitates start-up and extends the
compressor’s service life.
CAUTION
The compressor heater must be left on for a minimum of 3 hours before starting the
compressor for the first time.
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.
Heat pump domestic hot water

Compact P / Compact P Polar - AIR BY NILAN
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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.
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.
Heatpump

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General information
Introduction
General information prior to installation
The following documents are supplied with the unit:
• Installation instructions
• Software instructions
• User manual
• Wiring diagram
Instructions can be downloaded from Nilan’s website: https://www.nilan.dk/en-gb/frontpage/
download
If you have questions regarding installation of the unit after having read the instructions, contact your
nearest dealer of Nilan products. You can find Nilan dealers on www.nilan.dk/en-gb/frontpage/
download/dealers.
The purpose of these instructions is to advice the installer on correct installation and maintenance of
the unit.
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.
Unit type
Product description
Compact P AIR is a ventilation unit with an integral heat exchanger that also produces hot water for
domestic use as well as central heating via an air/water heat pump.
Compact P is designed for air flows of up to 275 m 3 /h at 100 Pa external counter-pressure. Compact P
XL can handle air flows up to 430 m 3 /h at 100 Pa external counter-pressure.
The ventilation part draws the humid, vitiated air out of the dwelling via the bathroom, WC, kitchen and
utility room and introduces fresh air into the habitable rooms, i.e. living room, bedrooms and office. The
cold outdoor air is heated up in the heat exchanger (heat recovery) by the warm extract air.
In addition to a (counterflow) heat exchanger, Compact P has an integral heat pump. The heat pump
uses the heat remaining in the extracted air following heat recovery in the heat exchanger to produce
hot water. In case of high hot water consumption, there is a 1.5 kW electric supplement heater in the
hot water tank, which can also be used to heat the water.
In the winter, the heat pump can be used to heat the supply air (inlet air) during periods in which no
domestic hot water is being produced. The supply air can be heated to 34 °C.
As it is a reversible heat pump, it can be used in summer to cool the supply (inlet) air. Compact P is able
to cool the supply air by up to 10 °C. However, it will not function as an air conditioning unit, as it
operates with a relatively low air change rate. Cooling of the supply air removes humidity from the

Compact P / Compact P Polar - AIR BY NILAN
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indoor air, providing good comfort for persons in the dwelling, even if the indoor temperature is high.
Compact P is able both to provide cooling and produce domestic hot water, so it could be said that the
cooling of the supply air is "free of charge".
The energy-efficient and low-noise AIR air/water heat pump heats the home via floor heating or low-
temperature radiators. It extracts energy from the outside air and functions at temperatures as low as
-22 ºC. The heat pump has an electrical power supply to help it to function during very cold periods. The
AIR unit has a reversible cooling circuit, which means that it can also be used to cool the home during
the summer, using either the floor heating system or fan coils.
The AIR air/water heat pump can also be used to help produce hot water for domestic use, either by
pre-heating the water in a buffer tank, or directly in a Compact P hot water tank, if bought with a solar
coil.

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The installation's internal unit
Compact P: AIR:
1. Duct connections
2. Front panel for filter changes
3. The control panel (touch-screen), can be
moved out and mounted wherever you wish
4. Extract air filter
5. Outdoor air filter (pollen filter placed here if
required)
6. Counterflow heat exchanger
7. Heat pump for ventilation and domestic hot
water
8. Automation
9. Fans
10. 100% bypass damper
11. Pre-heating element (Polar version only)
12. LAN cable (for connection to router or PC)
13. Condensate drain with water trap
14. 180 l domestic hot water tank (DHW)
15. 1,5 kW electrical supply heating element (with
overheating cut-out, which has to be pressed
in again if activated)
16. Electronically monitored sacrificial anode
17. Solar coil (SOL version only)
18. Plumbing connections
19. Electrical connection panel
20. Emergency mode
21. 8 l expansion tank for central heating circuit
22. Safety valve and manometer for the central
heating circuit
23. 50 l buffer tank
24. Feed cock and particle filter for the central
heating circuit
25. Circulation pump for circulation to the
external unit
26. 2 x 3 kW electrical central heating top-up
elements

Compact P / Compact P Polar - AIR BY NILAN
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The external unit
1. Evaporator element
2. Ventilator
3. Condensate drain with integrated heating cable
4. Heat pump
5. Connectors to internal unit (liquid)
6. Communication to internal unit and electrical connection

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Overview of temperature sensors
T2
T1 T4
T11
T20 T23
T17
T16
T18
T12
T6
T5
T3
Temperature sensors in the unit Temperature sensors outside
the unit
T7: Supply air after heating
element (accessory)
T8: Outdoor air before
preheating element (accessory)
T9: On heating element
(accessory)
TExt: External temperature
sensor (accessory)
Temperature sensors in the hot
water tank
T11: Top of tank
T12: Bottom of tank
T1: Outdoor air
T2: Supply air (inlet)
T3: Extract air (outlet)
T4: Extract air after heat
exchanger
T5: Condenser
T6: Evaporator
Temperature sensor in internal
unit
T18: Buffer tank (flow)
Temperature sensor in external
unit
T16: Before condenser (to
external unit)
T17: After condenser (from
external unit)
T20: Outdoor temperature
T23: Evaporator surface

900
2065 120
179
399
141
337
160 160
119
97
328
160
610
1
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Compact P / Compact P Polar - AIR BY NILAN
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Dimensional drawing
Internal unit:
Connections:
1. Outdoor air
2. Supply air (inlet)
3. Extract air (outlet)
4. Discharge air
Internal unit weight: 257 kg
External unit weight AIR9: 125 kg
External unit weight AIR9+: 165 kg
All dimensions are in mm

External unit AIR9
962
1301
905
542
485
External unit AIR9+
14

Compact P / Compact P Polar - AIR BYNILAN
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1" flow
1" return
3/4" flow
3/4" return
Buffer tank
18. Connection 1"
19. Flexible hose 1"
20. Shutoff valve
21. P1 circulation pump 130 mm
23. Electrical supply heating 2 x 3 kW
24. Temperature sensor T18 buffer tank (flow)
25. Flexible hose 10 mm
26. Automatic vent 3/8"
27. Expansion tank 8 litre
28. Manometer
29. Safety valve 2.5 bar
30. Shutoff valve with particle filter
31. P2 circulation pump
33. Check valve 3/4"
37. Feed tap 1/2"
50. Temperature sensor T23 evaporator element
51. Temperature sensor T20 outdoor temperature
52. Temperature sensor T17 after condenser
53. Temperature sensor T16 before condenser
External AIR unit Internal AIR unit
Pipe diagram

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Pollen filter
EM-box
CO2-sensor
Safety group
In longer periods of sub-zero temperatures, the high-efficiency counterflow heat
exchanger will ice up. To avoid icing, it is recommended that an electrical preheating
element is mounted.
The pre-heating element uses very little energy, but it ensures efficient heat
recovery without de-icing. You therefore achieve an overall reduction of energy
consumption.
As a standard, the unit is supplied with a plate filter.
If anyone in the household suffers from a pollen allergy, you can install a pollen
filter in the outdoor air intake to minimize the proportion of pollen in the indoor air.
A pollen filter also removes approx. 50 % of harmful particles in outdoor air, so a
pollen filter is recommended if you live in a large city or close to a motorway.
With an EM box it is possible to divide the extract air between the kitchen and the
bathroom.
If a cooker hood is connected to the unit and is switched on, extract air from the
bathroom will be reduced slightly to allow sufficient air for the cooker hood to
extract kitchen fumes.
The EM-box has a fitted metal filter that clears the air in the cooker hood of grease
particles effectively, and thereby protects the unit.
Fitting a CO2 sensor means the ventilation speed can be pre-programmed to run
higher ventilation levels in the event of high CO2 level in the extracted air. CO2
levels can be programmed.
The safety group consists of:
The safety group, which is made of brass, consists of a stop valve with an integral
non-return valve, a safety valve and drain cock. It can be installed directly beneath
the hot water tank.
Accessories
Electrical pre-heating element for frost protection

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Safety features
During periods with cooling ventilation, hot water in the tank can reach very high
temperatures - up to 80 ºC.
A maximum temperature of up to 60 ºC can be set in the control system to prevent
scalding, but active cooling is then limited.
To make full use of the cooling function, scalding protection should be fitted that
mixes hot water with cold to bring the temperature down.
If a solar panel is used to supplement hot water heating, scalding protection must
be fitted.
Flexible sound damper
Trolley
To make it easy to service the unit in the future, we recommend that you fit a
flexible connection between the unit and the duct system.
Nilan's flexible sound damper absorbs sounds effectively from both the duct
system and from roof stacks.
A trolley makes it possible to lift the unit of the pallet without physical strain. The
same trolley can be moved to wheel the unit around.
SHW hot water tank
If there is a large demand for hot water, a 250 litre hot water tank can be
connected.
The hot water tank is heated by the central heating system’s heat pump and/or
via solar panels.
The water runs from the SHW tank, through the DHW tank in Compact P, before
running into the domestic hot water supply.

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Installation
Installing the internal unit
Transport into the dwelling
Compact P is supplied in one piece on a pallet, packed in cardboard.
It is fitted at the factory with 4 lifting straps, one for each top corner. This makes it possible to lift in the
unit with a crane. When lifting the units with the supplied straps, these must be at an angle of max. 45°
from the vertical.
Nilan also offers a lifting trolley, with which the unit can be lifted directly off the pallet and into the
building. If the filter box is removed, the unit can be manoeuvred through an ordinary door.
Positioning of unit
ATTENTION
When setting up the unit, consideration must always be given to future servicing and
maintenance.
It must be easy to replace filters, and it must be possible to perform tasks such as removing the
heat exchanger, replacing fans and other components.
ATTENTION
A minimum free space in front of the unit of 60 cm is recommended.
It is important that the unit is level in order to achieve proper run-off from the condensate tray.
The unit should be positioned on a level and vibration-free substrate. In itself, the unit is low-noise and
low-vibration, but even so, account must be taken of possible vibrations which could be transferred to
building parts. We recommend maintaining a minimum 10 mm gap from building parts and other fixed
equipment.
ATTENTION
For noise reasons, it is recommended that the unit is positioned with its rear panel against an
outer wall.
At the lower rear and sides there are punched
areas which can be clipped out.
This avoids the necessity of cutting holes
yourself.
The rear angle iron on the base frame can be
removed, allowing the unit to be pushed up
against the wall, thereby concealing the water
connections.
ATTENTION
If a screen is mounted over the Compact P, it must be easy to dismantle this.

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Compact P / Compact P Polar - AIR BY NILAN
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Installing the external unit
Installation transport of external unit
The external AIR unit is supplied film-wrapped and fastened with straps to a transport pallet.
If ground conditions allow, it is recommended that a lifting truck is used to move it.
ATTENTION
If the AIR unit is lifted in using a crane, please notice that the weight is not evenly distributed at
the front and back.
Sound data
The sound from the AIR unit's external unit can be propagated depending on where it is sited relative to
the building and the underlying surface, as well as on other surrounding objects and surfaces.
Q = 2 (free-standing) Q = 4 (against a wall) Q = 8 (in a corner)
Sound effect LWA dB(A) 7/6 ºC - 30/35 ºC = 46 db(A) in accordance with EN14511, EN12102 and
EN3743/1
Sound pressure LpA dB(A) calculated in accordance with EN13487:2003:
Distance in metres
Location factor 2
Location factor 4
Location factor 8

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Installing the external unit
The external unit must always be installed on a firm, vertical and vibration-free surface and secured to
some solid material if possible. Account must also be taken of the prevailing wind direction during the
heating season, as the performance of the heat pump will be limited if the external unit is exposed to
strong winds.
A windbreak can be installed if required. However, clearance distances as detailed below must be
observed.
The following horizontal minimum distances to building components etc. must be observed in order to
ensure optimum functioning of the heat pump.
L≥40 cm
L≥35 cm
L≥50 cm
L≥40 cm
If it is desired to place the AIR up against the house, it is important that it is placed with consideration
for any noise from the outdoor unit which could be bothering inside.
Locate the AIR unit in such a way that the intake air is drawn from the building's surface. This is
because solar heating of the wall during the day and general heat loss from the building supplies
additional energy to the air, which can then improve the efficiency of the heat pump. If the AIR unit is
located with the extract directed at the wall, this will result in cold and damp air being blown against the
building, adding extra energy to the air.