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ULTI+ R32 RE DX

Air treatment Heat pump 4-damper system

In compliance with ERP 2021, THE ULTI+ R32 RE DX is a double-flow heat pump with rotary energy collector specifically designed for ventilation, heating and air conditioning of variable-occupancy rooms, such as performance halls and multi-purpose rooms. These double-flow heat pumps incorporate different equipment that allow optimized use of energy.

ULTI+ R32 RE DX is a low GWP fluid R32 rooftop

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Description

The ULTIMA Green Line is ETT’s next-generation modular rooftop range using R32 refrigerant (low GWP).

In compliance with the ERP 2021, it combines energy and acoustic performance, integrating a next-generation regulation system that allows the units to operate constantly in an optimal manner.

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 RE 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

  • Fluid R32 (Low GWP)
  • ERP 2021
  • High-performance rotary heat exchanger
  • Recovery of extracted air

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 and exhaust 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
  • Diagnostic assistance for refrigerant leaks detection
  • 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
  • Remote touch screen ETT Control Box
  • CCAD remote display
  • Native RS485 Modbus
  • Modbus IP
  • BacNet IP

Warranty

  • Extended warranty from 6 to 10 years