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ETT has developed a new generation of rooftop units: the EFFICIENCE range. This Eurovent certified range is the fruit of many years of experience in Ecodesign and modular heat pumps production.
EFFICIENCE range modular design offers you numerous possibilities. The EFFI+ EX is based on an EFFI+ packaged unit combined with an extraction module to adjust unit performance to the specificities and requirements of your application. This air conditioning unit is recommended for precise management of overpressure in the building.
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20-year guarantee against corrosion
The EFFI+ EX is a NEW GENERATION double flow heat pump with extraction box, specifically designed for the ventilation, heating and air conditioning of large areas such as superstores, warehouses, etc. This rooftop unit combines the latest technological developments to ensure optimised energy consumption.
The double flow rooftop heat pump with EX extraction module offers fully optimised air treatment. Thanks to the extraction box, the return air flow rate in the building can be adjusted depending on the supply air flow rate regardless of the fresh air damper position.
This double flow rooftop heat pump with extraction box is delivered ready to operate and can be installed either on a rooftop or at ground level depending on your needs.
Thanks to its full aluminium structure (frame & casing), this unit is covered by a20-year guarantee against corrosion (frame and casing).
The unit operates as a reversible air-to-air heat pump:
- Source: outside air
- Treated fluid: internal air
The EX module offers several operating modes:
The following modes are available on the EX module:
- heat pump
- air conditioner
- Free cooling: cooling with outside air, without thermodynamics
- Heating mode: In winter, comfort temperature is maintained thanks to the thermodynamic system and the auxiliaries (optional).
- Cooling mode: In summer, comfort temperature is maintained thanks to the thermodynamic system.
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Free Cooling mode: In mid-season, comfort temperature is maintained using in priority the difference between outside air and inside air to cool the building.
Free Cooling allows considerable savings by delaying the use of thermodynamics. - Recycling mode: Destratification of the volume recycled, when return air temperature is significantly higher than room temperature.
The ETT packaged unit comprises 3 different sections:
- The external section allows thermal exchanges with the environment.
- The separate technical section houses the refrigeration components, the electrical board and the control components.
- The internal section ensures the air change and air treatment.
Frame – Casing
- Unit with Vertical (V) or Lateral (L) supply air
- Return air connection on top
- Double skin, 13/10 AG in internal section, 50 mm
Acoustics
- Technical section acoustic insulation using STOPFLAM flexible fire-proof polyurethane foam
- Fresh air cowl sound insulation
- Exhaust air cowl sound insulation
- Compressors acoustic jackets
Air handling
- Filtration pressure gauge
- Analog air flow controller (AFC), air flow rate indication and measurement
- Filters fouling analogue control (FFAC)
- Backed-up self-contained smoke detector
- Fan epoxy coating
- Supply air fan available pressure 400 Pa maxi
- Operation in all recycling or all fresh air mode (not available for public access buildings)
- G4 refillable filters
- 1 set of spare G4 filters
- G1 metal filters (23 mm thickness) in fresh air mode
- F7 or F9 opacimetric filters, 98 mm thickness
- G4 + F7 or F9 double filters (48 + 48 mm)
- Exhaust air fan protection grid
Thermodynamics
- HP and LP pressure gauges
- Electronic expansion valves
- Cooling operation only
- Refrigerant leak detection aid
Thermal exchangers
- 3-stage electric heater
- Triac
- 2-row hot water coil with analog freezestat
- Vinyl coating on hot water coil
- Hot water progressive 3-way valve mounted with analog freezestat
- Mounted stop valve + TA regulating valve on outlet
- Vinyl coating on hot water coil
Electricity
- Total electrical energy metering according to 2002/91/EC
- Aluminium/copper connection terminal blocks (aluminium mandatory for power cables)
- Soft starter (compressors current soft starter)
- 230V/16 A single-phase socket in the technical section (separate power supply to be provided by the installer)
Control
- Year-round operation (allows compressor operation in cooling mode with -5°C < outside T° < +15°C)
- Free Cooling banning based on specific humidity comparison
- Hygrometry probe (for external humidifier control)
- VDP (Flow rate/Capacity variation)
Laying
- Aluminium adjustable connection roof curb
- Aluminium adjustable adaptation roof curb
- Aluminium adjustable ventilated roof curb
- Aluminium ventilated adaptation roof curb
- Aluminium plenum for return air and supply air
- 200 or 400 mm aluminium feet
