Modular compact heat pump
50NI
Refrigerant : R-410A
Cooling capacity : 19-115 kW
Heating capacity : 19-120 kW
Air flow : 4 000-21 000 m³/h
Air to air compact units with vertical construction for indoor use only.- R-410A refrigerant
- Scroll compressor in tandem
- Flexibility of configuration
- Outdoor plug-fan with EC HEE motor
- High seasonal performance
- The units are supplied in 2 modules, outdoor module and indoor module for installation on site as compact version or split version, according to the choice.

Ten different models available:
- 90, 120, 160 and 180: 1 circuit and 2 compressors
- 200, 240, 280, 320, 360, 420 and 485: 2 circuits and 4 compressors
General description
- Hermetic scroll compressors
- Tandem configuration
- Plug-fan EC for indoor and outdoor circuits
- 2 modules: outdoor module and indoor module for building work installation as compact version or split version
- Casing made of galvanized steel metal with polyester paint, white color RAL 7035
- All units are tested and checked in the factory
Outdoor module
Outdoor air circuit
- EC electronic supply plug-fans directly coupled with variable control speed and flow rate controller.
- Condensate drain pan
- Hermetic scroll-type compressor(s), with tandem design assembled over anti vibration mounts. Control of phase equilibrium and the direction of rotation
- Crankcase heater
- Thermostatic expansion valve with external equalization (heat pump units)
- Four-way cycle reversing valves (heat pump units)
- Suction accumulator, anti-acid dehydrating filter(s), liquid receiver(s)
- Filling and service valves for compact version
- Possibility of installation of modules separately, with filling and service valves
- Cooling connections for welding
- Complete and fully wired electric panel. Insulated panel cover to prevent condensation
- Transformer for power supply without neutral included in the electrical panel
- Main ground connection
- Compressor(s) and fan(s) motor contacts
- High and low pressure pressostats
- Compressor discharge temperature control
- Non-return valve built into the compressor
- Main door switch
- Magnetothermic protection switches for the compressor(s) power line and fans motor
- Automatic switch in the control circuit
Indoor module
Indoor air circuit- Coil with copper pipes and fins of an aluminum alloy
- EC electronic supply plug-fans directly coupled with variable control speed and flow rate controller
- Reusable air filters, assembled on a frame
- Condensate drain pan
- Thermostatic expansion valve(s) with external equalization
- Main door switch
- 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 2010/30/EU (ECO-LABELLING)
- Harmonized Standard: EN 378-2:2012
CARRIERrtc control
The CARRIERrtc control consists of a μPC MEDIUM control board, sensors, a pGD1 graphic terminal and a TCO user terminal (optional).
Main functions
- 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
Optional functions
- 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
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)
- Switch the unit ON / OFF
- Select the operating mode
- 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

CARRIERrtc medium control (optional)
Electronic module with microprocessor comprised of a control board and a TCO.
Outdoor environment
- Corrosion
- Coil with copper pipes and copper fins
- INERA® coil with copper pipes and fins of an aluminum alloy, of high performance and great resistance to the corrosion
- Coil with copper pipes and aluminum fins with polyurethane and Blygold® coating
- Humidity
- Tropicalized electric panel
- Tropicalized motors and fans (please consult)
Installation
- Anti-vibration mounts made of rubber
- Service valves for cooling connections
- Oil separator for cooling connections with maximum equivalent length of the cooling line greater than 50 meters, option only available when the units are supplied in 2 modules, outdoor module and indoor module for building work installation as split version
- Position of air supply of the outdoor unit:
- Side: supply by default
- Upper: only available when the units are supplied for building work installation as split version
- Air coil protection grille
- Gravimetric filters in the return air
Acoustic
- Acoustic insulating cover for compressor
Electric panel
- Electrical power supply with neutral
- Energy meter for monitoring of the power consumption of the installation (with CARRIERrtc control)
Outdoor environment
- Humidity
- Stop-drop in the indoor air coil
- Stop-drop in the outdoor air intake
- Corrosion
- Coil with copper pipes and copper fins
- INERA® coil with copper pipes and fins of an aluminum alloy, of high performance and great resistance to the corrosion
- Coil with copper pipes and aluminum fins with polyurethane and Blygold® coating
- Condensate drain pan in stainless steel.
Comfort / heating options
- Hot water auxiliary coil, with three-way valve. Two options:
- Nominal coil for heating in cooling-only units
- Auxiliary coil for heating in heat pump units
- Auxiliary electrical heaters, air flow controller included
Comfort / indoor air quality options
- Filtration of the supply air
- Air quality probe for installation in the environment or in duct to enable measuring CO2 and/or volatile compounds (with CARRIERrtc control)
Security
- Soft starter of the supply and/or return centrifugal fans which prolongs the set time mainly aimed at installations with cloth ducts
- Differential pressostat for the detection of clogged filters
- Differential pressostat for control of air flow
- Smoke detecting station in accordance with the NF S 61-961 standard
- Refrigerant leak detector (with CARRIERrtc control)
Installation
- Anti-vibration mounts made of rubber
- Centrifugal fan with belts and pulleys for indoor module (only for models 240 to 360)
- Position of supply and/or return of the indoor unit air
- Assemblies with mixing box with 2 motorized damper for air renewal and free-cooling
Ten different models available:
- 90, 120, 160 and 180: 1 circuit and 2 compressors
- 200, 240, 280, 320, 360, 420 and 485: 2 circuits and 4 compressors
General description
- Hermetic scroll compressors
- Tandem configuration
- Plug-fan EC for indoor and outdoor circuits
- 2 modules: outdoor module and indoor module for building work installation as compact version or split version
- Casing made of galvanized steel metal with polyester paint, white color RAL 7035
- All units are tested and checked in the factory
Outdoor module
Outdoor air circuit
- EC electronic supply plug-fans directly coupled with variable control speed and flow rate controller.
- Condensate drain pan
- Hermetic scroll-type compressor(s), with tandem design assembled over anti vibration mounts. Control of phase equilibrium and the direction of rotation
- Crankcase heater
- Thermostatic expansion valve with external equalization (heat pump units)
- Four-way cycle reversing valves (heat pump units)
- Suction accumulator, anti-acid dehydrating filter(s), liquid receiver(s)
- Filling and service valves for compact version
- Possibility of installation of modules separately, with filling and service valves
- Cooling connections for welding
- Complete and fully wired electric panel. Insulated panel cover to prevent condensation
- Transformer for power supply without neutral included in the electrical panel
- Main ground connection
- Compressor(s) and fan(s) motor contacts
- High and low pressure pressostats
- Compressor discharge temperature control
- Non-return valve built into the compressor
- Main door switch
- Magnetothermic protection switches for the compressor(s) power line and fans motor
- Automatic switch in the control circuit
Indoor module
Indoor air circuit- Coil with copper pipes and fins of an aluminum alloy
- EC electronic supply plug-fans directly coupled with variable control speed and flow rate controller
- Reusable air filters, assembled on a frame
- Condensate drain pan
- Thermostatic expansion valve(s) with external equalization
- Main door switch
- 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 2010/30/EU (ECO-LABELLING)
- Harmonized Standard: EN 378-2:2012
CARRIERrtc control
The CARRIERrtc control consists of a μPC MEDIUM control board, sensors, a pGD1 graphic terminal and a TCO user terminal (optional).
Main functions
- 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
Optional functions
- 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
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)
- Switch the unit ON / OFF
- Select the operating mode
- 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

CARRIERrtc medium control (optional)
Electronic module with microprocessor comprised of a control board and a TCO.
Outdoor environment
- Corrosion
- Coil with copper pipes and copper fins
- INERA® coil with copper pipes and fins of an aluminum alloy, of high performance and great resistance to the corrosion
- Coil with copper pipes and aluminum fins with polyurethane and Blygold® coating
- Humidity
- Tropicalized electric panel
- Tropicalized motors and fans (please consult)
Installation
- Anti-vibration mounts made of rubber
- Service valves for cooling connections
- Oil separator for cooling connections with maximum equivalent length of the cooling line greater than 50 meters, option only available when the units are supplied in 2 modules, outdoor module and indoor module for building work installation as split version
- Position of air supply of the outdoor unit:
- Side: supply by default
- Upper: only available when the units are supplied for building work installation as split version
- Air coil protection grille
- Gravimetric filters in the return air
Acoustic
- Acoustic insulating cover for compressor
Electric panel
- Electrical power supply with neutral
- Energy meter for monitoring of the power consumption of the installation (with CARRIERrtc control)
Outdoor environment
- Humidity
- Stop-drop in the indoor air coil
- Stop-drop in the outdoor air intake
- Corrosion
- Coil with copper pipes and copper fins
- INERA® coil with copper pipes and fins of an aluminum alloy, of high performance and great resistance to the corrosion
- Coil with copper pipes and aluminum fins with polyurethane and Blygold® coating
- Condensate drain pan in stainless steel.
Comfort / heating options
- Hot water auxiliary coil, with three-way valve. Two options:
- Nominal coil for heating in cooling-only units
- Auxiliary coil for heating in heat pump units
- Auxiliary electrical heaters, air flow controller included
Comfort / indoor air quality options
- Filtration of the supply air
- Air quality probe for installation in the environment or in duct to enable measuring CO2 and/or volatile compounds (with CARRIERrtc control)
Security
- Soft starter of the supply and/or return centrifugal fans which prolongs the set time mainly aimed at installations with cloth ducts
- Differential pressostat for the detection of clogged filters
- Differential pressostat for control of air flow
- Smoke detecting station in accordance with the NF S 61-961 standard
- Refrigerant leak detector (with CARRIERrtc control)
Installation
- Anti-vibration mounts made of rubber
- Centrifugal fan with belts and pulleys for indoor module (only for models 240 to 360)
- Position of supply and/or return of the indoor unit air
- Assemblies with mixing box with 2 motorized damper for air renewal and free-cooling
Documents