LDAV – LUAV
High Performance Compact Direct expansion Air Cooled Units are designed to provide maximum flexibility for integration into your system.
Standard Features
Air filters
• Standard high efficiency EU4 pleated air filters housed in a dedicated plenum box (LDAV)
• Dirty filter differential pressure switch
• Low air flow differential pressure switch
Cooling coil
• Heat exchanger coils designed for high sensible heat ratio (SHR) and reduced pressure drops
• Made of mechanically expanded copper tubes on aluminium fins
• Hydrophilic coil coating
Electronic Reciprocating Fans
• High-tech composite material impellers with optimised flow control
• High efficiency EC motors
• Low power consumption
• High part load efficiency
• Fan speed regulation via Modbus signal
Electrical panel
• Three-phase power supply 400 V/3 Ph+N/50 Hz for all units with single or dual power supply
• Low voltage secondary circuit 24 Vac with isolation transformer
• Metal insulating screen for protection against live components
• General isolator with mechanical interlocking
• Thermomagnetic circuit breakers for protection
• Terminal board for no-voltage signal and control contacts
Fixed speed scroll compressor
• High energy efficiency at full load conditions
• Extended operating conditions
• Equipped with Intermediate Discharge Valves (IDVs)
New microprocessor controller
• 7” touchscreen LCD interface
• Integrated management of EEV and cooling circuit parameters
• Integrated grouping logic
• RS485 and TCP/IP card bus integration targeting main communication protocols
• Local communication with EcoStruxure
• USB and Service port integrated into the display interface
Frame
• Self-supporting frame made of galvanized steel with panels
• External panels coated with RAL9003 epoxy-polyester paint
• Internal panels with fixed screws
• Internally coated with thermal and acoustic insulation
• Cooling circuit monitoring when the unit is active
• Side panels with coil inspection opening
Main configurable options
Power supply
• Single power supply
• Dual power supplies with automatic switching to provide redundancy and ensure a stable power supply
Construction options
• Downflow units (LDAV): top air return with bottom or front discharge (without additional floor stand)
• Upflow units (LUAV): front or bottom air return with top discharge
• Standard, cleanable or low conductivity humidifier (cooling + humidification configuration)
• Condensate drain pump (cooling only and cooling + dehumidification configurations)
• Standard electric heaters with extended blades, with dual safety thermostats and manual reset
• EU4 (standard) or EU5 air filters with or without motorized dampers
• Power phase capacitors
• Energy meter and CO2 emission calculator
• Automatic Floor Pressurization System via Active Floor Control (AFC)
Additional accessories
• Intake from top and front discharge plenums: can be equipped with soundproof insulation or high-efficiency air filters
• Direct free cooling plenum with rear and top intake
• Floor stands (200mm high)
• Floor stands with motorised damper (500mm high)
• Motorised damper
• Adjustable base frame (200 – 600 mm)
• Fire and smoke sensors
• Water leak detector
• Room air temperature / humidity sensor
Air-cooled remote condensers (OCC)
• R410A refrigerant
• Vertical or horizontal installation
• Low-speed axial fans compatible with ERP2015
• Versions with electronically commutated (EC) motors to reduce sound pressure level (optional)
• Fan speed regulator works via Modbus commands only
• Coil protection operation for aggressive environments (optional)
• Low-temperature versions operating down to -40°C (optional)
