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PENSUM Air Reversible Heat

Heating and refrigeration with a single system – provided by the PENSUM Air Reversible Heat. In the summer, our air/water heat pump creates a pleasantly cool environment by discharging thermal energy into the surrounding area. In winter it makes sure there is enough heat, with supply temperatures of up to 50 degrees Celsius. As well as lowering procurement costs for you, this also protects the environment.

Advantages of the PENSUM Air Reversible Heat at a glance

2-1 solution
with refrigeration and heat function
Always suitable
especially for office buildings and public institutions
through the use of the refrigerant R-454B with a low GWP value of 466
due to schedule programming, various master-slave configurations, remote access, can be integrated in your building management
thanks to numerous options such as integrated hydraulic modules, master-slave operation and glycol collection system

‘With the PENSUM Air Reversible Heat we have not only created a smart two-in-one solution, we have also designed a highly flexible system that adapts to the needs of users.’

Rosa Gutarz, Head of Product Management at ENGIE Refrigeration

The two-in-one solution: PENSUM Air Reversible Heat

The PENSUM Air Reversible Heat obtains energy from the ambient air as a renewable energy source for heating and refrigeration. The models of these low-temperature air-water heat pumps are especially cost-efficient, low-noise, and achieve energy efficiency category A++ (as per EU 811/2013). This makes the model series in the capacity range of 50 to 400 kilowatts especially suitable for use in office buildings and public institutions, which need to be pleasantly cool in summer and cosy in winter. But that’s not all: depending on your requirements, you can select specific configuration packages as well as a range of warranty and service options, for example. 

The PENSUM Air Reversible Heat convinces with a sophist-icated design and components of outstanding quality:

  1. Housing
    1. Compact housing with easy access thanks to an interior optimised for faster maintenance
    2. Standard colour is Silverline, optionally available in Blackline
  2. Refrigeration circuit
    1. Compressor: The scroll compressors used as standard represent an ideal solution in terms of high performance, low noise emissions and high reliability.
    2. Evaporator: The use of plate heat exchangers enables high performance with minimum refrigerant content
    3. Electronic expansion valve for precise control, reduced line losses and improved operation under partial load
    4. Construction-based A2L refrigerant safety measures, including refrigerant leak sensors, additional switch cabinet ventilation and overpressure control, software management of leak warning messages
    5. Compact condenser for a small footprint, made from copper tubes with aluminium fins, equipped as standard with protective grilles to prevent mechanical interference, optionally available with cataphoresis epoxy coating
  3. Fans
    1. AC fans with phase interface control for optimal air routing and maximum efficiency; optionally available with fans including an EC motor to improve ESEER by up to four per cent
    2. To reduce noise emissions at night, it is possible to set a reduced air flow (night setback)
  4. Control panel
    1. Control panel with a multilingual graphic LCD display for fast diagnostics, easy parameter adjustment; optionally available as an additional control unit for installation in a separate engineering room
  5. Control system
    1.  Communication with building control system or remote access possible
    2. Seven different master-slave logics for up to six PENSUM Air chillers
    3. Timer module, night mode or set point setting via 4-20 mA signal
    4. Single operating message for compressor as a comprehensive product support system equipped as standard

When ambient temperatures are hovering around freezing, the heat exchangers of air/water heat pumps tend to ice up. To prevent the ice from impeding the heat transfer and causing drops in performance, the Pensum Air Reversible Heat automatically activates a defrosting program. Defrosting by means of hot gas is not just safe and fast, it also has a better energy balance than an electrical heating element, for example.

Energy-saving options

  • EC fansMotor and electronics are perfectly coordinated and improve the ESEER value by up to four per cent.
  • Green heat recoveryIn refrigeration mode, heat recovery of up to 40 per cent of the output is possible – with temperatures of up to 55 degrees Celsius.


Hydraulic options

Thanks to its smart design, our PENSUM Air Reversible Heat has an interior large enough for plenty of equipment and numerous hydraulic options. Ex-works the integrated hydraulic module already contains the most important hydraulic components and is available in various configurations – which saves time and money during commissioning (plug & play). The hydraulic modules can comprise one or two high-pressure or low-pressure pumps, either in stand-by operation or in simultaneous operation, including an expansion tank or a buffer storage.

In addition, further hydraulic options are possible:

Glycol safety collection system: 

  • The tried-and-tested safety collection system for glycol in the PENSUM Air not only provides safety in the event of an accident, it also prevents oils and mixtures of water and glycol from being flushed out by rain, for example.


MSR options

  • Options for communication with the building control system: Ethernet interface and serial connection with networks that use the Carel Modbus RTU or LonWorks protocol.

Couldn’t find what you were looking for? Please contact us. We offer further options for customising the PENSUM Air Reversible Heat.

All PENSUM Air models use the future-proof refrigerant R-454B, which has a low GWP value of 466. That means it already falls below the average GWP of <500, the value that the F-gas Regulation stipulates from 2030. If you choose a machine with R-454B today, you reduce the impact on the environment by around 78 per cent compared to a machine with the refrigerant R-410A.

Discover our PENSUM Air models

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