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ULTI+ R32 DX

Air treatment Heat pump Rooftop

Compliant with the Directive on ErPs for 2021, the ULTI+ R32 DX is based on an ULTI+ R32 packaged unit combined with an exhaust module and a rotary heat exchanger module to adjust unit performance to the specificities and requirements of your application (renovation or new). The ULTI+ R32 DX ventilation and air conditioning solution gives priority to energy recovery, allowing substantial energy savings. It is recommended in case of high level of fresh air inlet.

The ULTI+ R32 DX is a rooftop unit using R32, a transitional refrigerant with a GWP of 675, replacing the R410A refrigerant with a GWP of 2088.

Discover our latest generation rooftop unit featuring an almost negligible impact on global warming: ULTI+ R290 with a GWP of 0.02.

Contact your local sales representative

Description

The ULTI+ R32 DX+ belongs to the ULTIMA Green Line, a modular range of next-generation rooftops from ETT. It combines quality materials, performance, energy savings, acoustics, regulation and new-generation connected components to ensure that the units operate at optimum efficiency at all times.

An unrivalled product line-up (flow rates/power) that perfectly meets the weight and space constraints of existing units to be replaced.

Thanks to its full aluminium structure (frame & casing) that ensures an excellent corrosion protection, this air conditioning and heating system is covered by a 20-year guarantee against corrosion (frame and casing).

This single flow rooftop heat pump is delivered ready to operate. A separate technical compartment facilitates unit control and maintenance and allows measurement and adjustment during operation.

The ULTI+ R32 DX is designed to provide precise regulation, adapting the rotational speeds of the power stages, for optimum, continuous energy performance throughout its years of operation.

This rooftop comes with a 5-year basic warranty and all ETT services: Commissioning, Audits, Service contracts etc.

Products top benefits

  • Grande plage de débit et de puissance disponible
  • R32 refrigerant
  • Extraction and recovery module
  • ERP2021

Product options

Frame– Casing

  • Double skin in internal section
  • Motorised external damper on supply air, except downwards (2006/42/EC Directive)

Acoustics

  • EC Low Noise supply fans
  • Compressors acoustic jackets

Air handling

  • Operation with all recirculated air (excluding Public Buildings)
  • All fresh air operation
  • Actuating smoke detector with battery back-up
  • Epoxy coating on supply air fans
  • Analogue air flow controller (AFC) with auto-adjustment of supply fans flow rate
  • Pressure gauges for supply air filters
  • ISO Coarse 65% (G4) refillable 98mm supply filters with analogue sensor
  • ISO ePM10 50% (M5) 98mm supply filters with analogue sensor
  • Double filters ISO Coarse 65% (G4) + ISO ePM1 50% (F7) or ISO ePM1 80% (F9) (48 + 48mm) at supply with analogue sensor
  • ISO ePM1 50% (F7) 98mm supply filters with analogue sensor
  • ISO ePM1 80% (F9) 98mm supply filters with analogue sensor
  • Pressure relief vent
  • Cowl for pressure relief gravity damper
  • Defrosting damper
  • Fresh air cowl extension

Thermodynamics

  • Air-conditioning operation only (non-reversible machine)
  • Compressor MAP monitoring
  • Vinyl coating on thermodynamic coils
  • Refrigerant leak detection aid
  • HP and LP pressure gauges

Auxiliaries

  • Hot water recovery coil with analogue frost protection thermostat
  • Auxiliary hot water coil with analogue frost protection thermostat
  • Modulating 3-way valve for hot water coil
  • Shut-off valve on the supply + ‘TA’ regulating valve on the return for hot water coil
  • 2-stage sequential electric heaters + load shedding via dry contact
  • Preheating of fresh air by 3-stage electric auxiliary heaters

Electrics

  • Totalising electrical energy metering in compliance with RT 2012
  • Aluminium/copper connection terminal blocks (aluminium mandatory for power cables)
  • 230V/16 A single-phase PC socket in the technical room (separate power supply to be provided by the installer)
  • Phase checker
  • IT earthing system compatibility
  • Cable cover for external power supply (to be fitted by the installer)

Installation

  • Adjustable connecting aluminium roof curb
  • Aluminum connection adapter curb
  • Adjustable ventilated aluminium curb
  • Ventilated adapting aluminium curb
  • Aluminium plenum for return air and supply air
  • 200, 400 mm or 600mm aluminium feet

Control

  • Operation in year-round mode (compressor authorisation in Cooling mode with outside temp. < +15°C)
  • Control function in Comfort mode (setpoint temperatures control by PID)
  • Free Cooling banning based on specific humidity comparison
  • Flow Rate / Power Variation operation
  • HPE+ operation (High Energy Efficiency)
  • Dehumidification function level 1 (without heating capacity recovery)
  • Dehumidification function level 2 (with heating capacity recovery & on/off refrigerating 3WV)
  • Dehumidification function level 3 (with heating capacity recovery & analogue refrigerating 3WV)
  • Average room temperature (4 sensors)
  • Minimum fresh air slaving using turret contacts (2 maximum)

Communication

  • myETTvision
  • ETT Control Box remote touch display
  • CCAD remote display
  • Native RS485 Modbus
  • Modbus IP
  • BACnet IP

Warranty

  • Extended warranty from 6 to 10 years