Compact P AIR 9+

The Compact P AIR 9+ has the same functions, benefits and options as the Compact P but can further be used to exploit outdoor air to heat the home.

When you install a Compact P AIR 9+, your home will become self-sufficient in sustainable energy and it will no longer be necessary to use other sources of energy, such as district heating, oil or gas, to heat your home. The Compact P AIR 9+ is the eco-friendly choice for anyone who wishes to exploit sustainable sources of energy to heat their homes and at the same time reap the benefits in the form of lower heating bills and a good, healthy indoor climate. 

The system is equipped with an outside air heat pump, AIR 9+ Compact, which, in contrast to the system itself, is set up outside. The heat pump absorbs the energy in the outside air and coverts this energy into heat that is used to heat water in your central heating system, which is then pumped to the radiators or underfloor heating in your home.

The Compact P AIR 9+ solution can reduce your heating bill by up to 50%. For each kW power used by the outside air heat pump, you get up to four times as much heat in return.

Compact P AIR 9+ is also available in a version with a built-in pre-heating element – Compact Polar AIR 9+. Compact Polar AIR 9 is optimum for use in cold climates.

The Compact P AIR heat pump, has achieved the German Smart Grid certification which means it can fit the operation to the power capacity of the power network.

Compact P AIR 9+ has the same benefits and functions as Compact P, but also has an integrated air/water heat pump, with connection to waterborne underfloor heating or lowtemperature radiators for central heating.

The solution consists of an integrated interior section in Compact P, as well as an exterior section that is easy to connect.

AIR 9 is delivered with a reversible heat pump, which also makes the unit capable of cooling.

AIR 9+ is very silent and can be placed without disturbing it surroundings. During summer, when only hot sanitary water is needed, the fan is limited, reducing the noise level. This limit occurs when the outdoor temperature exceeds 15 °C and limiting the compressors output to a maximum off 60 %. These criterias can be set individually.

Technical specifications Compact P AIR 9+

Dimensions (inside part) (W x D x H) - Integrated in Compact P 550 x 300 x 1.100 mm
Weight (Compact P + inside part) (202 + 55 kg) 257 kg
Control CTS 700
Dimensions (outside part) (W x D x H) 940 x 742 x 1263 mm
Weight (outside part) 165 kg
Supply voltage (inside part) 3 x 400 (3 x 230V), N, PE, 16A, 50 Hz
PMAX (inside part) 6,1 kW
Fuse size (inside part) 16 A
Standby electricity consumption 2,5 W
Supplementary electrical heating 2 x 3 kW
Buffer tank(integrated) 50 L

Ecodesign/ERP data

Fan data
Motordata (optimalt driftspunkt)

Top cover

To cover the ducting over the unit, Nilan offers a top cover in white-varnished aluzinc (RAL 9016).


Extra heat exchanger of 0.7 m2 in the hot water tank, which can be connected to an approximately 3 m2 solar heating system, or other heat sources.

CO2-sensor - CTS 700 control

With a CO2-sensor installed, the ventilation speed can be pre-programmed with CTS 700 to run at a higher ventilation steps when CO2 reaches high level in the extract air. CO2-level is programmable.

Electrical heating element incl. regulation

When you fit an electrical heating surface, you can raise the fresh air temperature to the desired level at any time. The electrical heating surface is supplied ready to fit into the fresh air duct and, for easy fitting, the device is pre-fitted with all the required sensors.


Electrical pre-heating element (Frost protection)

An electrical pre-heating element heats up the outdoor air before it enters the unit. This avoids having to defrost the unit, resulting in a loss of power.

There are temperature sensors supplied to be fitted in the ducts.


An EM-box allows heat recovery from the air from the range hood and thereby helps to heat the supply air. The EM-box is equipped with a steel filter which efficiently cleans the range hood air of fat particles and thereby protects the system.


Pollen filter - ISO ePM1 50-65%

A pollen filter class ISO ePM1 50-65% can be fitted in the unit. The pollen filter is fitted with the ISO Coarse >90% (G4) plate filter.

Model AIR 9
Air-to-water heat pump Yes
Water-to-water heat pump No
Brine-to-water heat pump No
Low-temperature heat pump Yes
Equipped with a supplementary heater Yes
Heat pump combination heater No


Temperature control  
Model CTS700
Class 2
Contribution to seasonal space heating energy efficiency 2%


Item Symbol Value Unit   Item Symbol Value Unit
Rated heat output (*) Prated 5,21 kW   Seasonal space heating
energy efficiency
ŋs 206 %
*Declared capacity for heating for part load at indoor temperature 20 °C and outdoor temperature of Tj   Declared capacity for heating for part load at indoor temperature 20 °C and outdoor temperature of Tj
Tj = -7 °C Pdh 4,79 kW   Tj = -7 °C COPd 3,20  
Tj = +2 °C Pdh 2,88 kW   Tj = +2 °C COPd 4,95  
Tj = +7 °C Pdh 1,90 kW   Tj = +7 °C COPd 6,53  
Tj = +12 °C Pdh 2,12 kW   Tj = +12 °C COPd 9,69  
Tj = bivalent temperature Pdh 5,21 kW   Tj = bivalent temperature COPd 2,83  
Tj = operation limit temperature Pdh 0     Tj = operation limit temperature COPd 0  
For air-water-heating pumps Tj = -15 °C (if TOL < -20 °C) Pdh       For air-water-heating pumps Tj = -15 °C (if TOL < -20 °C) COPd    
Bivalent temperature Tbiv -10     For air-to-water heat pumps:
Operation limit temperature
  -22 °C
Cycling interval capacity for heating Pcych       Cycling interval efficiency      
Degradation co-efficient Cdh 0,94-0,99     Heating water operating limit
WTOL 45 °C
Power consumption in modes other than active mode   Supplementary heater
Off mode POFF 0,01     Rated heat output Psup 6 kW
Thermostat off-mode PTO 0,005            
Standby mode PSB 0,01     Type of energy input Electrical    
Crankcase heater mode PCK 0            
Other items          
Capacity control Variabel kompressor Variabel indendørs vandflow   For air-to-water heat pumps:
Rated air flow rate, outdoors
  3000 m3/h
  Variabel indendørs temperatur regulering   For water-/ brine-water heat pumps: Rated brine or water flow rate, outdoor heat exchanger     m3/h
Sound power level, outdoors LWA 46 dB          
Emissions of nitrogen oxides QHE 1464 kWh          


Sound output level

The sound from the AIR outside part reverberates depending on the placement around the house as well as the substrate on which the unit stands and the surroundings. The below is measured for hard substrate.

Sound effect LWA dB(A) 7/6 °C - 30/35 °C = 46 dB(A) according to EN14511, EN 12102, EN3743/1 - Ecodesign 811/2013 and 813/2013.

Sound pressure LpA dB(A) according to EN13487:2003


Distance in meters 1 2 6 10 21
Position factor 2 38 32 22 18 12
Position factor 4 41 35 26 21 15
Position factor 8 44 38 28 24 18


All measurements are in mm

The Compact P is controlled by its CTS 700 touch panel, which provides a wide range of functions, including menucontrolled operation, weekprogrammes, time-controlled filter monitor, fan speed adjustment, temperature control, error messages etc.

The CTS 700’s factory settings are default settings that can be adapted to operating needs and requirements, to achieve optimum operation and utilisation of the system.

Operating instructions for CTS 700 can be found in the separate user guide supplied with the system.

18 Connection 1”
19 Flexihose 1”
20 Shut-off valve
21 P1 circulation pump 130 mm
23 Supplementary electrical heating 2 x 3 kW
24 Temperature sensor T18 buffer tank (forward)
25 Flexihose 10 mm
26 Automatic control vent 3/8”
27 Expansion tank 8 litre
28 Manometer
29 Safety valve 2,5 bar
30 Shut-off valve with dirt filter
31 P2 circulation pump
37 Feed cock 1/2”
43 3-way valve
50 Temperature sensor T23 evaporator
51 Temperature sensor T20 outdoor temperature
52 Temperature sensor T17 after condenser
53 Temperature sensor T16 before condenser

Functional overview CTS 700 control panel

Functional overview  



3 levels The control function is divided into 3 levels: User / Installer / Factory with various options at each level.  +
Weekly plan There is an option for you to set your own weekly programme.  +
User option 1 This allows you to override the operating mode in the main menu via an external potential-free contact or PIR sensor.  +
User option 2 This allows you to override the operating mode in the main menu via an external potential-free contact or PIR sensor. User option 2 has a higher priority than user option 1. +
User option 2 out When user option 2 is used, at the same time an output signal is given. +
Alarms The alarm list is featuring all alarms. +
Datalog Opportunity for datalog.  
Filter monitor Filter monitor with timer (factory setting of 90 days). Adjustable to 30/90/180/360 days.  +
100% Bypass Bypassing the outdoor air reduces heat recovery, enabling the desired supply air temperature to be maintained spring, summer and autumn. +
Air quality Allows you to choose whether to switch humidity sensors and/or CO2 sensors on and off.  +/-
Humidity control Allows you to set a higher or lower ventilation step in the case of high/low air humidity.  +
CO2 control Allows you to set a higher or lower ventilation step in the case of a high/low CO2-level. -
Air exchange Allows you to select a low ventilation step in the case of low outside temperatures and air humidity. +
Night setback A possibility to set back the ventilation and temperature a night. +
Defrost function Temperature-based automatic function for defrosting the heat exchanger. +
Frostprotection In case of failing heating system, the unit is turned off to avoid further cooling with a risk of the water heating coil frost bursting. +
Temperature control Allows you to select the temperature sensor which will control the unit.
•     TExt external room temperature sensor
•     T3 EXHAUST (extract air)
Air volume Allows you to set the ventilation flow stepless from 20 to 100 %. In four steps. +
Summer/Winter operation The unit automatically changes to summer or winter operation. +
Legionella control It is possible to choose a weekday or a day during the month, where the sanitary hot water temperature reaches 65 °C, for example between 1 and 6 o´clock. +
Fire alarm This allows you to connect fire-detecting thermostats, smoke detectors and other fire alarm contacts. In case of an alarm, smoke dampers are closed and the unit stops. +
Joint alarm Outlet for joint alarm. +
Cooling Via bypass or heat pump.
The heat pump has a reversible circuit, which means that the units circuit is  reversed and the unit cools, rather than heating, the supply  air. It is possible to choose whether the unit is to run a higher or highest ventilation stage during cooling.
Via a weekly plan night cooling can be set up.
External heating element •     Temperature sensor T7 is an supply air sensor
•     Integrated frost protection for external water heating element
•     Motorised valve and circulation pump control unit
External electric heating element •     Temperature sensor T7 is an supply air sensor
•     Overheating protection
External network It is possible to connect the unit to an external network. +
Reset Allows you to restore the factory settings.  +
Language Option for setting the relevant language (Danish/German/English).  +


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