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ULTI+ R290 EX / New!

Air treatment Heat pump Rooftop

Fully compliant with the ErP 2021 directive, the ULTI+ R290 EX , the ULTI+ R290 EX is composed of the single-flow packaged unit ULTI+ R290 with an added extraction module converting it into a double-flow system.
This unit is recommended for precise management of overpressure in airtight rooms.

The EU Regulation 2024/573 (also known as F-Gas III) mandates the progressive phase-out of Fluorinated Greenhouse Gases, culminating in a total ban by 2050.
Accordingly, from the following dates, the installation of new rooftop units using refrigerants with a
GWP > 150 will be prohibited:
• 2027 for units ≤ 50 kW
• 2030 for units > 50 kW

To anticipate these regulatory changes, ETT has upgraded its ULTIMA Green Line rooftop range to use an ultra-low GWP refrigerant.

The ULTI+ R290 is a propane-based rooftop unit, using a natural, non-fluorinated refrigerant with an almost negligible GWP of 0.02. This makes it a future-proof technology in the air-to-air heat pump segment, as it is fully exempt from the upcoming regulatory tightening.

Contact your local sales representative

Description

The ULTI+ R290 EX belongs to the ULTIMA Green Line range, 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.

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 double 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+ R290 EX is designed to provide precise regulation, adapting the rotational speeds of the power stages, for optimum, continuous energy performance throughout its years of operation.

Backed by a standard 5-year warranty, this Rooftop unit comes with the full range of ETT services: Commissioning, Audits, Service contracts etc.

Products top benefits

  • Fluid R290 / Propane (Low GWP: 0.02)
  • Patented solution
  • Energy gain of 60% to 71%

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

Air handling

  • Operation with all recirculated air (excluding Public Access Buildings)
  • All fresh air operation
  • Actuating smoke detector with battery back-up
  • 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
  • Defrosting damper
  • Fresh air cowl extension

Thermodynamics

  • Air-conditioning operation only (non-reversible machine)
  • Compressor MAP monitoring
  • Electrofin protection on thermodynamic coils

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

Electrics

  • Totalising electrical energy metering in compliance with French RT 2012
  • Aluminium/copper connection terminal blocks (aluminium mandatory for power cables)
  • 230V / 16 A single-phase PC socket in the technical compartment (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 curb
  • Connecting adapter aluminium curb
  • Adjustable ventilated aluminium curb
  • Adapting ventilated aluminium curb
  • Aluminium plenum for return air and supply air
  • 200, 400 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)
  • Average room temperature (4 sensors)
  • Minimum fresh air slaving using turret contacts (2 maximum)

Communication

  • Extension
  • ETT ‘Control Box’ remote touch display
  • CCAD remote display
  • Native RS485 Modbus
  • Modbus IP
  • IP BacNet

Warranty

  • Extended warranty available – Please consult us