Compact P XL + Air 9

Specifications & Technical Data

Compact P XL + AIR9 is a multi-unit with three installations that are combined in one compact installation. It is intended for large dwellings with a ventilation requirement of up to 430 m³/h.

The three installations comprise ventilation of the dwelling, production of domestic hot water, and heating of the dwelling via an efficient air to water heat pump.

By integrating all three installations in just one installation, you save considerable space in the machine room. Another advantage is that the control systems work in unison, which enables energy efficiency and thereby an overall saving in energy consumption. The Air 9 is an accompaniment to the Compact P XL and located externally. it provide hot water for underfloor heating or a radiator system


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          


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

Dimensions (inside part) (W x D x H) – Integrated in Compact P 550 x 300 x 1.100 mm
Weight (inside part) 55 kg
Control CTS 700
Dimensions (outside part) (W x D x H) 962 x 542 x 1.301 mm
Weight (outside part) 125 kg
Supply voltage (inside part) 400/230V 2L+ N+PE, 50Hz
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


The CTS602 control is an advanced control with many setting options. The control is delivered from the factory with a basic setting that can be adapted to the operational wishes and requirements, in order to achieve optimal operation and utilization of the unit.

The HMI Touch panel provides a good overview of the unit’s current operation, and has a menu structure that is easy to navigate for both user and installer. 

External communication
The CTS602 control has an open Modbus RS485 protocol that can be used to communicate with via external CTS systems. The Modbus connection is used e.g. for Schneider’s IHC or KNX system.

Functional overview CT602 control panel
Function overview   +Standard
Filter guard The time-controlled filter guard notifies you when it is time to change the filter. Can be set between 30 and 180 days. +
Operating mode Can be set to run Auto according to set values ​​or set to run in heating or cooling mode. +
Stepless regulation The four ventilation stages can be set steplessly 20-100%, with different values ​​for supply air and extract air. +
Moisture management Built-in humidity control can be set to run high ventilation mode when there is high humidity (when you are in the shower) and low ventilation mode if the humidity in the home becomes too low. +
Active cooling The unit can be set to cool the supply air in the summer if needed. When the heat pump cools, the heat is deposited in the hot water tank, so that you get “free” hot domestic water when the unit is in cooling mode. +
Low outdoor temperature It is possible to lower the ventilation when the outside temperature is low, to avoid that the humidity inside becomes too low. +
CO2 management It is possible to control the ventilation level according to the home’s CO2 level.
Temperature settings The temperature settings are used by the controller to regulate the operation of the entire system. +
Frost protection The control has an automatic function for defrosting the heat exchanger if ice should form in it. +
Frost protection Polar The Polar model has a built-in anti-freeze pre-heater to protect the counter-flow heat exchanger so that it does not get ice. +
Frost protection EHD The control can control an EHD damper, which is used if the outside air comes via a roof hood. +
Hot domestic water Compact P produces the hot domestic water via the air/air heat pump in the ventilation part. +
Pause domestic hot water It is possible to pause hot water production if, for example, for a period not at home. In this way, energy is saved. +
Antifreeze hot water To protect the hot water tank, it is equipped with a frost protection function. +
Electricity supplement hot water

If the demand for hot water is so great during periods that the heat pump cannot keep up, an electric supplement can be switched on to help heat the hot domestic water.

Scalding protection The control has a built-in scalding protection, which ensures that the hot domestic water does not become too hot and could scald the users. +
Anti-Legionella The control has an Anti-Legionella treatment of the hot domestic water, which can be activated manually or automatically. +
Anode Electronically monitored anode. Notifies when it’s time to replace it, extending the life of the hot water tank.  
SHW preheating tank An additional hot water tank SHW can be connected to the GEO geothermal heat pump and preheat the hot domestic water to 45 ºC before it enters the Compact P hot water tank. +
Hot domestic water If the Compact P is ordered with a solar coil, the GEO ground source heat pump can be connected to the Compact P hot water tank and help produce the hot domestic water. A good solution if there is a large need for domestic hot water and there is no space for a SHW container. +
Weekly schedule A weekly plan can be made with different settings depending on the use of the home. +
Smart Grid Compact P GEO is approved for Smart Grid solutions, where the electricity company determines the electricity consumption and thus the operating costs. +
User selection 1 Used if you want to override the unit’s operation via a potential-free signal. Used e.g. if an extractor hood is connected to the system. +
User choice 2 Used as user selection 1, but at the same time has an output signal that can be used e.g. to control a damper. +
Event log Logs events in the control as well as error messages and warnings. +
Read out data All current values ​​in the plant’s operation can be read out. Most often used for troubleshooting. +
Emergency stop ventilation You must not switch off the ventilation, as this can cause damage to the unit, duct system and, in the worst case, the home. But it may be necessary to briefly switch off the ventilation, e.g. due to an emergency notification. +

Further information about all the functions can be found in the unit’s Software and Assembly instructions.