Fresh air terminal unit with counterflow opposing flow static heat recovery.
Construction features
• Recovery unit: very high yield static type with aluminium plates with back-current flows with close step. Extraction of side exchange pack from top or bottom depending on models and versions
• Fans: fresh air inlet and forward blade dual intake centrifugal exhaust type with a directly coupled electric motor; optionally, EC Brushless technology high efficiency electric motors. Fan unit installed on anti-vibration mountings to prevent the transmission of vibration to the structure. The EC fans can be factory set for operation with constant flow rate (specification to be provided in order)
• Structure: frame made with extruded aluminium profile with preloaded nylon joints. Sandwich buffer panels, 23 mm thick, made with galvanised sheet steel on the inside and pre-painted on the outside with thermal and acoustic insulation made of injected polyurethane, with a density of 45 kg/m3.
• Filtering section: filtration sections made of compact cell filters with low pressure drop polypropylene media, removable from the side, with ISO 16890 ePM1 55% efficiency class ( F7 EN 779) in fresh flow and ISO 16890 ePM10 55% ( M5 EN 779) in exhaust flow.
• Factory-installed dirty filter differential pressure switches
• Condensate drain pan made of galvanised sheet steel with condensate drain connection from the bottom.
• Integrated free cooling or thawing by-pass system. Thanks to the presence of a motorised damper next to the heat recovery, a bypass system can be created to manage freecooling or thawing depending on thermohygrometric needs or conventions
Versions
• UTNR-A/O PLATINUM – Recovery unit with opposing flow heat exchanger, horizontal installation and with standard multi-speed fans
• UTNRE-A/O PLATINUM – Recovery unit with opposing flow heat exchanger, horizontal installation and with Brushless EC fans that reduce power consumption for ventilation at equal performance.
• UTNR-A/V PLATINUM – Recovery unit with opposing flow heat exchanger, installed vertically and with standard multi-speed fans
• UTNRE-A/V PLATINUM – Recovery unit with opposing flow heat exchanger, installed vertically and with Brushless EC fans that reduce power consumption for ventilation at equal performance.
Available orientation
• 01 – Right-hand connections
• 02 – Left-hand connections
The selected orientation must be specified to process the job order.
Installation
• EXT- Outdoor installation including rain cover, 80 mm-high base and an outdoor electrical box (the kit does not include the roof for any additional accessory modules)
Factory fitted accessories
• BER – PRE-POST – Pre-heating electrical resistance (no frost function) installed inside, complete with filament-type safety thermostats and control relays to contain pressure drops.
For each size you may choose between 2 available power outputs
• BA – Internal hot water reheating coil.
• BAATG – Antifreeze thermostat installed downstream of the water reheating coil.
• ERF7-F7 efficiency return filter
Separately supplied accessories
• KSBFR – Section containing hot/cold water coil to reheat or recool, placed outside the machine in front of the intake vent. Includes stainless steel condensate drain pan with drain connection from the bottom.
• KSBFR + ATG – Hot/cold water coil section with mounted antifreeze thermostat.
• KSRE – Regulation damper set up for servo-control, consisting of a galvanised sheet steel frame with adjustable fins.
• KSSC – Duct silencer with a rectangular base made of glass wool covered with a protective film of glass fibre and micro-stretched sheet metal.
• KRMS – Section with three dampers for air mixing and recirculation (only for horizontal installation).
• KSPC – 4 circular connections
Controls
• KCV2 – Speed selector for wall mounting installation, to select from 3 speeds: Off/heating/cooling switch; 3-speed switch; 230V power supply.
• PCU – Control panel for wall mounting installation, allows the winter/summer environment temperature to be controlled, gives consent to activate or exclude the water coil (ON/OFF Valves control) or the electrical resistance. Selects the operating speed of the fan between minimum, medium, maximum and controls the freecooling function.
• PCU – Control panel for wall mounting installation, allows the winter/summer environment temperature to be controlled, gives consent to activate or exclude the water coil (ON/OFF Valves control) or the electrical resistance. Selects the operating speed of the fan through 0/10 V adjustment and controls the freecooling function.
• KPCUEM – adds a board to interface Modbus with BMS to the KPCUE control functions.
Full Controls
• KRFCS – Electrical panel complete with: DDC programmable microprocessor regulator. BMS interfacing Integrated as standard with Modbus RTU protocol, main disconnecting switch, relay to control various users, terminal blocks for quick connection of all machine components, auxiliary circuit supply with suitable transformer 230/12-24V.
USER PANELS (for KRFCS)
• KHMIG -Interface terminal with black monochrome graphic display with LED backlighting.
• KHMIR – Interface terminal complete with integrated room temperature probe with black monochrome graphic display with LED backlighting.
• KCW – White decorative plate for control panel.
• KCB – Black decorative plate for control panel.
• KWMS – Wall mounting installation support for control panel.
Valves and actuators
• KV3V – PN40 Mixer/diverter 3-way regulation ball valves, female threaded hydraulic connections.
• KV2V – PN40 2-way regulation ball valves, female threaded hydraulic connections.
• KVMM – Actuator for ball regulation valves with modulating control 0/10 Vdc 24 Vac power supply.
• KV0M – Actuator for 230V On/Off valves.
• KDMA-S – Actuator for modulating damper 0-10V 24V with spring return.
• KDMA – Actuator for modulating damper 0-10V 24V without spring return.
• KDOA – Actuator for ON/OFF damper with spring return.
All the probes, actuators and valves on the Full Control section are also available.
