Heat recovery unit
Heat recovery unit
Fresh air terminal units with counterflow opposing flow static heat recovery.
Features
Key features
Horizontal or Vertical Version
Very high efficiency heat recovery Eurovent Certificate
EC Brushless fans
F7 and M5 high efficiency filters
Double sandwich wall with high insulation capacity
Description
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: Outdoor air and exhaust fans with a directly coupled electric motor high efficiency EC Brushless technology. The fan unit is installed on anti-vibration mountings to prevent vibrations being transmitted to the structure.
• 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 thermo-hygrometric needs or conventions
Versions
• UTNRE-A/O PLATINUM - Recovery unit with opposing flow heat exchanger, horizontal installation and with high efficiency Brushless EC fans.
• UTNRE-A/V PLATINUM - Recovery unit with opposing flow heat exchanger, installed vertically and with high efficiency Brushless EC fans.
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.
• 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 rectangular baffles in mineral wool covered with a protective film of glass fibre and micro-stretched sheet metal.
• KRMS - Sections with three dampers for air mixing and recirculation (only for horizontal installation).
• KSPC - 4 circular connections
Controls
• PCUS – composed from the control unit on board of the unit + WALL LCD display , suitable for controlling units with EC Brushless fans
Functionality: control of the winter/summer ambient temperature, management of: water battery and antifreeze thermostat (ON/OFF or modulating valve control), electrical resistance of preheating and/or post-heating, air dampers, freecooling of heat recovery, air filter pressure switches, CO2 or Humidity sensor for automatic modulation of EC fans, integrated clock for time slot program.
• PCUSM - same functionality as PCUS card with Modbus RTU connection port.
• TRAFO 230/24- factory-assembled transformer combined with PCUS-M controllers for the management of valves with 24 V modulating actuator.
• FULL CONTROL- for a description of these controls, please refer to the relevant page.
Technical data
| UTNR-A PLATINUM MODEL | 40 | 75 | 100 | 150 | 200 | 320 | 400 | 500 | ||||
| Outdoor air filters | F7 | F7 | F7 | F7 | F7 | F7 | F7 | F7 | ||||
| Return air filters | M5 | M5 | M5 | M5 | M5 | M5 | M5 | M5 | ||||
| TECHNICAL SPECIFICATIONS | ||||||||||||
| Nominal air flow rate | m³/h | 400 | 750 | 1000 | 1500 | 2050 | 3200 | 3800 | 4700 | |||
| BRUSHLESS EC FANS | ||||||||||||
| Motor type | EC | EC | EC | EC | EC | EC | EC | EC | ||||
| ❶ | Nominal available static pressure | Pa | 160 | 120 | 180 | 160 | 120 | 180 | 200 | 200 | ||
| ❶ | Max. available static pressure | Pa | 340 | 210 | 520 | 500 | 540 | 375 | 330 | 200 | ||
| ❷ | Specific fan power (SFP) | W/(m³/s) | 705 | 742 | 1059 | 1048 | 898 | 1040 | 949 | 935 | ||
| ❸ | Sound power level | dB(A) | 57 | 60 | 59 | 61 | 59 | 64 | 66 | 68 | ||
| Speed No./Adjustment Type | 0-10 V | 0-10 V | 0-10 V | 0-10 V | 0-10 V | 0-10 V | 0-10 V | 0-10 V | ||||
| Electrical supply | V-ph-Hz | 230-1-50 | 230-1-50 | 230-1-50/60 | 230-1-50/60 | 230-1-50/60 | 230-1-50/60 | 230-1-50/60 | 230-1-50/60 | |||
| COUNTERFLOW HEAT RECOVERY | ||||||||||||
| ❹ | Winter Efficiency | % | 83,6 | 82,9 | 81,6 | 83,3 | 83,7 | 86,8 | 84,1 | 84,2 | ||
| ❺ | Summer Efficiency | % | 75,5 | 75,9 | 74,5 | 75,1 | 75,6 | 78 | 75 | 75,1 | ||
| ❻ | Efficiency Regulation EC 1253/2014 | % | 75,9 | 76,4 | 75 | 75,6 | 76 | 76,3 | 75,5 | 75,6 | ||
| OPERATING LIMITS | ||||||||||||
| Outdoor air humidity/temperature limit | °C/% | -5 | ||||||||||
| Outdoor air humidity/temperature limit with KRMS accessory | °C/% | -15 | ||||||||||
| Indoor air humidity/temperature limit | °C/% | +10 | ||||||||||
| DIMENSIONS AND WEIGHTS | 40 | 75 | 100 | 150 | 200 | 320 | 400 | 500 | ||||
| HORIZONTAL vers. length | mm | 1480 | 1940 | 1940 | 2200 | 2200 | 2500 | 2500 | 2500 | |||
| HORIZONTAL vers. height | mm | 380 | 480 | 480 | 550 | 550 | 680 | 680 | 680 | |||
| HORIZONTAL vers. depth | mm | 800 | 990 | 990 | 1000 | 1400 | 1400 | 1400 | 1700 | |||
| HORIZONTAL vers. weight | kg | 90 | 140 | 150 | 170 | 200 | 230 | 260 | 300 | |||
| VERTICAL vers. length | mm | 1480 | 1940 | 1940 | 2200 | 2200 | 2500 | 2500 | 2500 | |||
| VERTICAL vers. depth | mm | 420 | 520 | 520 | 520 | 720 | 720 | 720 | 720 | |||
| VERTICAL vers. height | mm | 830 | 1070 | 1070 | 1080 | 1480 | 1480 | 1480 | 1780 | |||
| VERTICAL vers. weight | kg | 90 | 150 | 160 | 180 | 220 | 250 | 280 | 330 | |||
| Condensate drain | inch | 1/2″ | 1/2″ | 1/2″ | 1/2″ | 1/2″ | 1/2″ | 1/2″ | 1/2″ | |||
| Condensate drain | inch | 1/2″ | 1/2″ | 1/2″ | 1/2″ | 1/2″ | 1/2″ | 1/2″ | 1/2″ |
- Data at the following conditions:
- ❶ Values referring to the nominal air flow rate considering the pressure drops of the heat recovery and the F7 filter.
- ❷ Values referring to the nominal air flow rate and Nominal available static pressure.
- ❸ Radiated sound power level from casing.
- ❹ Outdoor air T: -5°C, 80% UR; Ambient air T: 20°C, 50% UR.
- ❺ Outdoor air T: 32°C, 50% UR; Amb. air T: 26°C, 50% UR.
- ❻ Dry nominal conditions, measured according to EN 308 in balanced flows. Outdoor air 5°C D.B.; Ambient air 25°C D.B.
- Data at the following conditions:
- ❶ Values referring to the nominal air flow rate considering the pressure drops of the heat recovery and the F7 filter.
- ❷ Values referring to the nominal air flow rate and Nominal available static pressure.
- ❸ Radiated sound power level from casing.
- ❹ Outdoor air T: -5°C, 80% UR; Ambient air T: 20°C, 50% UR.
- ❺ Outdoor air T: 32°C, 50% UR; Amb. air T: 26°C, 50% UR.
- ❻ Dry nominal conditions, measured according to En 308 in balanced flows. Outdoor air 5°C D.B.; Ambient air 25°C D.B.
- ❺ Outdoor air T: 32°C, 50% UR; Amb. air T: 26°C, 50% UR.
- ❻ Dry nominal conditions, measured according to En 308 in balanced flows. Outdoor air 5°C D.B.; Ambient air 25°C D.B.
Manuals
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Technical notes
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