Packaged rooftop cooling only / Heat pump
50FF/FC 100-280 R-454B

50FC series, models 100 to 280, refrigerant R-454B: reversible heat pump

50FF series, models 100 to 280, R-454B : cooling units

General description

• Optimized part-load management
• High level of seasonal efficiency
• R-454B refrigerant with low Global Warming Potential GWP.
• Self-supporting frame
• Design optimized
• Low sound level
• Multi-scroll compressors
• Electronic expansion valves
• Variable speed EC fans
• Auto-adaptative microprocessor control
• Aluminum panels and registers
• Option casing double wall (50mm) in all indoor section in contact with airflow (insulation A2-s1 d0 (M0))

Design flexibility

• Wide range of airflow configuration and options
• Vertical supply/return units are ideal for new construction or retrofit to existing installations
• Horizontal units are ideal for replacement or applications such as through-the-wall where sound must be attenuated before the duct penetrates the roof

Easy and fast installation

• Connected directly to an air distribution ductwork without additional elements or equipment, pipes, cables, etc. taking no floor space at all
• Reduces the cost of installation, facilitates a quick connection and ensures reliable operation
• Specific safety requirements may apply due to R454B is classified as A2L

Superior reliability

• Excellent full and part load efficiencies 
• High quality components
• All units are tested at various stages on the production line for circuit leakage, electrical compliance and refrigerant pressures

Advanced technology and performance

• Electronic plug-fans in the indoor circuit with direct drive and variable speed offer the following advantages:
  • Elimination of friction losses during transmission thanks to the direct drive
  • Greater aerodynamic efficiency of the rotor (reactive blades with an optimized profile), running at very high operating pressures
  • Greatly increased motor efficiency. Permanent magnets DC motors activated using electronic switching integrated into the motor itself
  • Variable speed to ensure a constant supply air flow rate, independent of the filters clogging level
  • Measuring the flow rate
• Electronic axial fans in the outdoor circuit which adapt the rotation speed to the installation’s requirements, reducing electricity consumption, the sound level at part load and improving the unit’s average seasonal efficiency
• Electronic expansion valves
• Multi-scroll tandem compressors 

Environmental care

• Making an environmentally responsive decision is possible when using R-454B refrigerant. The NEW refrigerant R-454B is the best choice in rooftop units thanks to the lowest GWP (77% lower than R-410A), the reduction of refrigerant charge, and its higher energy efficiency.
• No wooden pallets needed for handling, thus eliminating not only the waste disposal but avoiding the cut of trees

Casing

• Structure made of galvanized steel metal. Panel and registers in aluminum. Finished with polyester paint, white color RAL 7035
• New self-supporting frame
• Removable panels for easy access to all components: electrical cabinet, compressors, fans, filters, etc.
• Skids for easy transport in a container. The dimensions of this range allow all models and assemblies to be transported in a container, so that the special SEI4C maritime packaging is not necessary under any circumstances

Indoor unit

• Thermal and acoustic insulation in panels and registers with M1 fire classification
• Coil with copper pipes and aluminum fins
• EC electronic supply plug-fans directly coupled with variable control speed and flow rate controller
• Reusable gravimetric air filters G4
• Isolated pan of condensates drainage sloping down towards the drain.

Outdoor unit

• Coil with copper pipes and aluminum fins
• 2 machine concepts in the outdoor section for performance optimization (V coil in sizes 180-280)
• EC electronic axial fan(s) which adapt the rotation speed to the installation’s requirements, thereby reducing electricity consumption, the sound level at partial charge and improving the unit’s average seasonal efficiency
• The cover with the motor fan(s) may be lifted to access the inside of the outdoor unit

Cooling circuit

• Hermetic scroll-type compressor(s) in tandem design, assembled over anti vibration mounts. Control of phase equilibrium and the direction of rotation
• Crankcase heater
• Electronic expansion valve(s)
• Four-way cycle reversing valves (heat pump units)
• Acid-resistant filter(s) dryer
• Cooling design based with 2-air volumes

Protections

• High and low pressure pressostats
• High and low pressure transducers
• Compressor discharge temperature control
• Main door switch
• Magnetothermic protection switches for the compressor(s) power line and fans motor
• Automatic switch in the control circuit

Electrical cabinet

• Complete and fully wired electrical cabinet. Insulated access door to prevent condensation. Forced ventilation of the electrical cabinet. Protection IP54
• Numeration of wired
• Electrical power supply with neutral
• Main ground connection
• Compressor and fan motor contacts

• Machinery Directive 2006/42/EC (MD)
• Electromagnetic Compatibility Directive 2014/30/EU (EMC)
• Low Voltage Directive 2014/35/EU (LVD)
• Pressure Equipment Directive 2014/68/EU (Category 2) (PED)
• RoHS Directive 2011/65/EU (RoHS)
• Eco-design Directive 2009/125/EC (ECO-DESIGN)
• Energy Labelling Directive 2017/1369/EU (ECO-LABELLING)
• Harmonized Standard: EN 378-2:2012 (Refrigerating systems and heat pumps - Safety and environmental requirements)

"50FC" control

Factory-installed “50FC” control provide the capability for free standing operation or may be linked with a more extensive system. The 50FC series may also be configured to communicate via LonWorks^®, BACnetTM and Konnex protocols, if required by the application. This control also manages a local connection between units through a pLAN network (Local Area Network), allowing data and information to be exchanged between units, for a maximum of 15 units.

• Higher part load efficiency
• Better control of temperature
• Superior reliability
• High ambient cooling operation at 48ºC in reversible heat pump units (52ºC in cooling units)
• Low ambient cooling operation at -15ºC WB

• Selection of set-point and operating mode: Heating, Cooling, Auto, Ventilation
• Continuous control of the operating parameters
• Display of the values measured by the sensors
• Compressors cycles
• Defrosting management
• Control of the supply air temperature
• All-seasons operation via the condensation and evaporation pressure control
• Set-point compensation based on the outdoor temperature
• Hourly and weekly schedule
• Fire protection
• Diagnosis of faults and general alarm
• Management of all the optional components available for the unit: economizer, back-up heating, CO2 air quality sensor, energy recovery,...

User interfaces

Graphic terminal

This terminal, fitted as standard on the electrical cabinet, is used to:

• Carry out initial programming of the unit
• Modify operating parameters
• Switch the unit ON / OFF
• Select the operating mode and adjust the set-points
• Display the variables controlled and sensor values measured
• Display the current alarms and their historical record

User terminal (optional)

This terminal can be installed on the electrical cabinet, instead of the graphic terminal. It is used to:

• Switch the unit ON / OFF
• Select the operating mode and adjust the set-points
• Display the installation’s temperatures and humidity, outdoor temperature, supply air temperature, CO2 sensor and opening of the outdoor damper
• Display alarms codes

 

Touch panel (optional)

• 4.3 inch touchscreen panel
• Simplified navigation between the various screens

Supervision solutions

• Solution for the management and supervision of a single unit if this incorporates the Ethernet pCO Web card

• Solution for the management and supervision of air-conditioning installations with up to 300 units (BOSS) and 50 units (BOSS-MINI)
• Integrated wi-fi
• Advanced monitoring and maintenance functions
• Allows zones and groups to be created
• Energy meters can be integrated to monitor the installation electricity consumption

Energy savings / recovery options

• Active recovery (BA and BB assemblies). Thermodynamic circuit dedicated to recovery energy from extracted air flow.
• Passive recovery using heat recovery exchanger to transfer energy from the extracted air flow to the fresh air. The wheel is fitted into a module placed on one side of the unit (BW assembly).

Outdoor environment

• Temperature
  • Thermal and acoustic insulation with double wall 50 mm thick in all indoor section in contact with airflow, with fire classification Euroclass A2-s1, d0 (M0)
  • Anti-freeze protection for low outdoor temperatures
• Corrosion
  • Coils (outdoor, indoor and/or auxiliary) with copper-made pipes and fins
  • INERA^® coils (outdoor, indoor and/or auxiliary) with aluminum alloy fins of high performance and great resistance to the corrosion, and copper pipes
  • Coils (outdoor, indoor and/or auxiliary) with polyurethane precoated aluminum fins and copper pipes
  • Blygold^® coating
• Humidity
  • Stop-drop at the fresh air intake
  • Tropicalized components on the electrical cabinet with protective varnish: control board, cards and terminals
  • Tropicalized motors and fans
  • Basic dehumidification (standard function). Dehumidification is done with units starting up in COOLING, and heating option is required to reheat air after evaporator

Comfort / heating options

• Hot water auxiliary coil, with three-way valve. This option always incorporates an anti-freeze thermostat as safety system
• Auxiliary electrical heaters, with two power stages and on/off control, for assembly and connection inside the unit
• Warm air heater module with gas burner with modulating actuator, in accordance with the Gas Directive 2009/142/EC

Air filtration + droplet eliminator

• Different filters combinations: G4 low pressure drop, combinations double stage with G4 + M6 ; or others as M6+F7, or F7 + F9
• Droplet eliminator after the indoor air coil

Outdoor fan

• Two-speed direct-driven axial fans

Insulation

• Thermal and acoustic insulation with double wall 50 mm thick in all indoor section in contact with airflow, with fire classification Euroclass A2-s1, d0 (M0)

Indoor unit

• Condensate drain pan in stainless steel for corrosion protection
• Room over-pressure management (available in BP, BT, and BW assemblies)
• Filter fouling detection with differential pressure switch

Outdoor unit

• Outdoor coil protection grid
• Droplet eliminator at the fresh air intake
• Anti-vibration mounts made of rubber

Extra heating

• Heat recovery coil (HRC) to pre-heat the air that will pass through the main indoor coil. For this, it uses the temperature of an outdoor water installation.

Special applications

• Zoning of the air flow up to 4 different zones
• Low return temperature application in cooling mode

Electrical supply

• Electrical power supply without neutral

Sensors

• Ambient temperature sensor(s) - up to 4 sensors
• Dual ambient temperature-humidity sensor(s) - up to 4 sensors
• CO2 sensor for air quality control
• Smoke detection control unit in accordance with the NFS 61-961 standard

Economizer management + outdoor humidity

• The economizer allows to make best use of outdoor air conditions when these are more favorable than the return air conditions
• Percentage of outdoor air can vary between 0% and 100%
• Economizer management can be: thermal, enthalpic, thermoenthalpic
• Outdoor air humidity sensor

Terminal + unit communication

• Different combinations for terminals (in electrical cabinet and/or for remote control)
  • Graphic terminal, user terminal, touch panel
  • Control without terminal (for units with shared terminal in a Plan NETWORK)
• Cards for BMS communication with different protocols
• By default, the electronic control is configured for a standalone unit, but it is also possible to place it in a pLAN network (Local Area Network) as Lead, lag or Back-up.

Miscellaneous

• Management of a humidifier with on-off or proportional control
• Electrical energy meter for monitoring of the power consumption of the installation
• Cooling capacity and electrical energy meter
• Compressor soft starter
• High performance phase sequence relay, which allows the protection settings to be adjusted
• High grade switching devices
• Varnish protection for the components on the electrical cabinet: control board, cards and terminals