Packaged rooftop cooling only / Heat pump and separated gas module option
50EN/EH

• 50EN Series: cooling units
• 50EH Series: reversible heat pumps

General description

• Electronic axial fans in the outdoor circuit
• Electronic plugfans in the indoor circuit
• Air coils
• Hermetic scroll compressors
• Electronic control with microprocessor
• All units are tested and checked in the factory

Casing

• Casing made of galvanized steel metal with polyester paint, white color RAL 7035
• Thermal insulation 9 mm thick, with fire classification B-s3,d0 (M1)
• Self-supporting frame

Outdoor circuit

• Electronic EC 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
• Coil with copper pipes and aluminum fins

Indoor circuit

• EC electronic supply plug-fans directly coupled with variable control speed and flow rate controller. Plug-fans with direct drive and variable speed offer advantages :
• • Elimination of friction losses during transmission thanks to the direct drive
  • Greater aeraulics efficiency of the rotor (reactive blades with an optimized profile), running at very high operating pressures
  • Greatly increased motor efficiency
  • Variable speed to ensure a constant supply air flow rate, independent of the filters clogging level
  • Measuring the flow rate
• Reusable air filters, assembled on a frame
• Coil with copper pipes and aluminum fins
• Condensate drain pan

Cooling circuit

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

Protections

• High and low pressure pressostats
• 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 panel. Insulated panel cover to prevent condensation. Forced ventilation of the electrical cabinet
• Numeration of wired
• Transformer for power supply without neutral in electrical panel
• 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)

CARRIERrtc control

The CARRIERrtc control consists of a μPC MEDIUM control board, sensors, a pGD1 graphic terminal and a TCO user terminal (optional). This system uses a RS485 field-bus to manage additional components. A BMS card (optional) allows the control board to be connected to a centralised technical management system.

It also manages a local connection between units through a pLAN network (μPC MEDIUM Local Area Network), allowing data and information to be exchanged between units, for a maximum of 15 units.

• 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 time delays
• Defrosting management (in heat pump units)
• 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

• External air damper for the renewal of fresh air, depending on the temperature of the mixed air or depending on the air quality sensor
• Mixing box for thermal, enthalpic or thermoenthalpic freecooling
• Cooling recovery circuit for renewing the air
• Rotary heat exchanger
• Auxiliary electrical heaters: two-stage with on/off control or single-stage with proportional control
• Hot water coil with 3-way valve, with proportional or on/off control
• Gas burner with proportional control
• Humidifier with proportional or on/off control
• Air flow rate controller (with centrifugal fans)
• Clogged filter pressostat
• Smoke detection station
• Air quality sensor for measuring CO2 and/or volatile compounds
• Refrigerant leak detector
• Energy meter and and calculation of the cooling and heating capacities
• Zoning into 2 areas with dampers

pGD1 terminal

This graphic terminal, installed on the electric panel of the machine, allows :

• The initial programming of the unit
• Modification of operating mode
• Unit ON / OFF
• Selection of the operating mode
• Setting of set-points
• On-screen display of controlled variables and sensor values measured
• On screen display of active alarms and historical records of alarms

TCO user terminal (optional for remote control)

The TCO user terminal, for remote control, allows:

• Modification of some operating parameters
• Unit ON / OFF
• Selection of the operating mode and setting of set-points
• On-screen display some controlled variables and probe values
• On-screen display of alarms codes

Supervision solutions

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

• Solution designed for the monitoring of small and medium-size installations, capable of manage up to 30 units
• Available in two versions: panel and wall
• Includes: 7 “ touch display, buzzer for notifications, 1 USB port and 1 SD card slot for downloading reports, charge devices models and applying service packs

• Solution for the management and supervision of air-conditioning installations with up to 300 units
• Advanced monitoring and maintenance functions
• Allows zones and groups to be created
• Energy meters can be integrated to monitor the installation electricity consumption
• Two versions available:
  • Box: comprised of CPU and, optionally, by monitor and keyboard
  • Touch: this includes CPU and touchscreen in a single device

Outdoor environment

• Temperature
  • Thermal and acoustic insulation 50 mm thick, with fire classification Euroclass A2-s1, d0 (M0)
  • Anti-freeze protection for low outdoor temperatures
• Corrosion
  • Coils (outdoor, indoor and/or auxiliary) with copper pipes and copper fins
  • INERA^® coils (outdoor, indoor and/or auxiliary) with copper pipes and fins of an aluminum alloy of high performance and great resistance to the corrosion
  • Coils (outdoor, indoor and/or auxiliary) with copper pipes and aluminum fins with polyurethane and Blygold^® coating
  • Condensate drain pan for the indoor circuit in stainless steel
• Humidity
  • Stop-drop in the indoor air coil (optional from model 415 to 960 and included in models 1100 and 1200)
  • 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 (please consult)

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
• Natural or propane gas burner with modulating actuator, in accordance with the Gas Directive 2009/142/EC

Comfort / indoor air quality options

• Air quality sensor for installation in the environment or duct-mounted to enable measuring CO2 and/or volatile compounds
• Dual-stage of opacimetric folded filters

Safety options

• Soft starter of the optional centrifugal supply air and/or return air fans
• Differential pressure switch to detect clogged filters
• Differential pressure switch for checking the air flow, with centrifugal fan
• Smoke detecting station in accordance with the NF S 61-961 standard
• Refrigerant leak detector

Installation options

• Axial 2-speed outdoor fan(s) directly coupled to the motor. Important: models 840 1200 with these fans do not comply with ErP regulation (only for countries outside the European Union).
• Centrifugal supply air and/or return air fans, coupled by pulleys and belts. Important: centrifugal supply fans do not comply with ErP regulation (only for countries outside the European Union).
• Control of the over-pressure with the MC0, MRC0, MC1 and MRC1 assemblies
• Standardized pre-assembly roofcurbs made of galvanized steel panelling with polyester paint, thermally insulated. Adjustable height
• Anti-vibration mounts made of rubber
• Adaptation roofcurbs for the replacement of existing units on site
• Condensate drain pan for the outdoor circuit in galvanized steel
• Protective grille for the outdoor coil
• Hail guard protective grille for the outdoor coil

Electrical cabinet options

• Electrical power supply with neutral
• High performance phase monitoring relay, which allows to adjust the protection settings
• Energy meter for monitoring of the power consumption of the installation
• Energy meter and cooling and heating capacities measurement