Compact P XL - CTS700 control

Compact P XL is an energy-efficient total indoor climate solution for all types of low-energy buildings, single-family homes, flats and small office areas in commercial leases with a ventilation requirement of up to 430 m3/h. Compact P XL has a 180 l hot water tank. 2 layers of glass enamelling to ensure a long lifetime.

Compact P XL recovers the energy from the extracted air using a highly efficient counter flow heat exchanger. The remaining energy that is not utilized by the counter flow heat exchanger is used by the heat pump to produce hot water, and to further heat the supply air. 

The heat pump has a reversible cooling circuit, which means that, in the summer, the unit can cool the supply air by up to 10 °C. Due to the low air exchange, the cooling does not function as an air conditioning system. On cooling, the supply air is dehumidified which gives a more pleasant indoor climate than is possible with an ordinary ventilation unit without a heat pump.


Dimensions (WxDxH) 900 x 610 x 2065 mm
Weight 202 kg
Plate type casing Aluzinc steel plate, white powder coating RAL9016
Heat exchanger type Polystyrene counterflow heat exchanger
Fan type EC, constant rotation
Filter class Standard ISO Coarse >90% (G4)
Duct connections Ø 160 mm
Condensate drain PVC, Ø 20×1,5 mm
External leakage < 1,4% (*3)
Internal leakage < 1,1% (*4)
Supply voltage 230 V (±10 %), 50/60 HZ
Max. input/power 2,4 kW / 10,4 A (*1) // 3,6 kW / 15,6 A (*2)
Tightness class IP31
Refrigerant R134a

Ecodesign/ERP data

Fan data
Motordata (optimalt driftspunkt)

* 1 Input without heating element (accessory).
* 2 Input Compact Polar
* 3 At ± 250 Pa and 265 m3/h according EN 308/EN 13141-7.
* 4 At ± 100 Pa and 265 m3/h according EN 308/EN 13141-7.

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.

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.

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.

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.


Water heating element incl. regulation (duct mounted)

The supply temperature can always be raised to the required level using a water heating element. The water heating element is designed to be built into the duct and must be connected to the primary heating supply. Supplied with two-way adjustment valve, temperature sensor and frost thermostat (not recommended for GEO / AIR).


Consumer profile, water heater L (large)
Energy efficiency class A
Energy efficiency for water heating -
average climate
94 %
Annual electricity consumption - average
1081 kWh/annum
Temperature settings on the thermostat 10 - 65 °C
Sound power level LWA 51 dB(A)
The water heater can function outside
peak load periods (Smart-grid)
Guidelines for assembly, installation and
See installation
Energy efficiency for water heating - cold
94 %
Energy efficiency for water heating - warm
94 %
Annual electricity production - cold climate 1081 kWh/annum
Annual electricity consumption - warm
1081 kWh/annum



Capacity of standard unit as a function of qv and Pt,ext.

SEL values according to EN 13141-7 are for standard units with standard filters ISO Coarse >90% (G4) and without heating element.

SEL values comprise the unit’s total power consumption incl. control.

Conversion factor: J/m3 : 3600 = W/m3/h

Attention! The SEL values are measured and stated as a total value for both fans.

Temperature efficiency

Temperature efficiency as a function of volume flow qv [m3/h] for unit with counterflow heat exchanger.

Temperature efficiency according to EN13141-7 (2°C / 20°C).

NB! The temperature efficiency, is for the heat exchanger only (without heat pump operation).

Sound data

Sound data is for qv = 210 m3/h and Pt,ext = 100 Pa in accordance with EN 9614-2 for surface and EN 5136 for ducts.

Sound output level LWA drops with falling air volumes and falling back-pressure.

At a given distance, the sound pressure level LpA will depend on the acoustic conditions at the installation site.

COP (air-air)

Heat output factor COP [-] supply air as a function of outdoor temperature t21 [°C] and volume flow qv [m3/h] in accordance with EN14511 at a room temperature t11 = 21°C

COP according EN14511 is calculated for the heat pump and counter flow heat exchanger combined.

Tapped water

Tapped volume in litres Vmax [L] from Compact P tank as a function of tapped temperature t [C°] and tank temperature at 40°, 50° and 60°C 

Heat output supply air

Heat output Qc [W] as a function of qv [m3/h] and outdoor air temperature t21 [°C]. In accordance with EN 14511, t11=21°C (extract air)

Heat output is the contribution to room heating added to the fresh air via Compact P to the supply air.

The ventilation loss is the heat output that is lost without heat recovery at the given volume flow air.

1: Fresh air
2: Supply air
3: Extract air
4: Discharge air

The Compact P is controlled by its CTS 700 touch panel, which provides a wide range of functions, including menu-controlled operation, week programmes, 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.

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 %. I fire trin. +
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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