Web code: ERK01
TERMINAL UNITS AND HEAT RECOVERY UNITS

Electa-REK

UTR 20-30 - UTRR 15/45
Air flow rate 200 – 300 – 150/450 m³/h

Fresh air terminal units with heat pump active thermodynamic recovery and opposing flow passive recovery.

Features

Key features

Extremely thin: only 26 cm high for ceiling installation.
Integrated air quality and humidity sensor.
Very high efficiency filters in class ePM1 80%.
High efficiency passive recovery unit >90%, in sensitive or enthalpy version.
BLDC horizontal rotary compressor and constant-flow EC fan.
Touch control as standard

Electa-REK

Description

Construction features

• Recovery unit:
- First stage of heat recovery of static air-air type, sensitive or enthalpy, with opposing flows in very high efficiency polypropylene.
- Second stage of heat pump active thermodynamic heat recovery (with R410A gas) consisting of high efficiency BLDC horizontal rotary hermetic compressor, evaporating and condensing coils with copper pipes and aluminium fins, electronic expansion valve and safety devices, 4-way valve for cycle inversion and dryer filter.
• Fans: UTR double-intake centrifugal fans with constant flow EC motor for fresh and expelled air; UTRR: EC radial fans with constant flow for fresh and expelled air, centrifugal fans with double-intake, with EC motor, for recirculation air.
• Filtering section: 80% ePM1 filters with low pressure drop air side renewal and ambient inlet, both removable at the bottom; 70% coarse filters on the recirculation side removable at the bottom, for UTRR.
• Self-supporting structure, double side sandwich panelling, internally galvanised sheet steel and externally painted (RAL 9003), with high density polystyrene insulation (20 mm thick). Circular inlets (Ø 200 mm) with sealing gasket for connection to the air ducts; lower condensate collection tank with double drain.
• Electrical adjustment and power panel integrated on the unit; electronic microprocessor control for fan speed management, room temperature setting, timed dirty filter management, air quality sensor management with flow modulation, summer/winter changeover and defrosting cycles.

Version

• UTR-S - Fresh air units with heat pump active thermodynamic recovery and opposing flow passive sensitive heat recovery.
• UTR-X - Fresh air terminal units with heat pump active thermodynamic recovery and opposing flow passive enthalpic heat recovery.
• UTRR-S - Fresh/recirculation air units with heat pump active thermodynamic recovery and opposing flow passive sensitive heat recovery.
• UTRR-X - Fresh/recirculation air units with heat pump active thermodynamic recovery and opposing flow passive enthalpic heat recovery.

Controls supplied separately: MANDATORY

One of the following controls is MANDATORY to operate the unit:
• KPUTB - Wall-mounted touch control panel, glossy black, to adjust room temperature, ON/OFF, summer/winter, Auto, Night, MIN, MAX speed, alarm signalling, with Wifi board, RS485 Modbus RTU interface and connection cable, up to 15 m from the unit.
• KPUTW - Wall-mounted touch control panel, pearl white, to adjust room temperature, ON/OFF, summer/winter, Auto, Night, MIN, MAX speed, alarm signalling, with Wifi board, RS485 Modbus RTU interface and connection cable, up to 15 m from the unit.

Technical data

MODEL UTR-S 20 UTR-S 30 UTRR-S 15/45 UTR-X 20 UTR-X 30 UTRR-X 15/45
Nominal fresh air flow m³/h 235 318 150 235 318 150
Fresh air flow m³/h 210 235 90 210 235 90
Fresh air flow m³/h 135 165 50 135 165 50
Nominal recirculation air flow m³/h - - 462 - - 462
Recirculation air flow m³/h - - 370 - - 370
Recirculation air flow m³/h - - 280 - - 280
Available static pressure Pa 100 100 100 100 100 100
Sound pressure dB(A) 40,0 41,5 42,0 40,0 41,5 42,0
ELECTRICAL SPECIFICATIONS
Electrical supply V-ph-Hz 230-1-50 230-1-50 230-1-50 230-1-50 230-1-50 230-1-50
Max. absorption kW 1,70 1,70 1,78 1,70 1,70 1,78
❷ ❹ PERFORMANCE IN HEATING MODE UTR-S 20 UTR-S 30 UTRR-S 15/45 UTR-X 20 UTR-X 30 UTRR-X 15/45
Static recovery minimum efficiency temperature/enthalpy 85% 83% 87% 69% / 36% 64% / 34% 72% / 39%
Passive recovery kW 1,69 2,23 1,06 1,74 2,25 1,48
Active recovery nom. heating capacity kW 2,29 2,92 2,65 2,32 2,95 2,65
Total heating capacity kW 3,98 5,15 3,71 4,06 5,20 4,13
Absorbed power kW 0,75 0,95 0,88 0,74 0,93 0,88
Overall COP 5,31 5,42 4,22 5,49 5,59 4,69
❸ ❹ PERFORMANCE IN COOLING MODE UTR-S 20 UTR-S 30 UTRR-S 15/45 UTR-X 20 UTR-X 30 UTRR-X 15/45
Static recovery minimum efficiency temperature/enthalpy 77% 74% 82% 69% / 28% 64% / 25% 71% / 35%
Passive recovery kW 0,48 0,62 0,31 0,67 0,77 0,5
Active recovery nom. cooling capacity kW 1,98 2,37 2,30 1,98 2,38 2,3
Total cooling capacity kW 2,46 2,99 2,61 2,65 3,15 2,8
Absorbed power kW 0,68 0,84 0,75 0,67 0,83 0,75
Overall EER 3,62 3,56 3,48 3,36 3,80 3,73
DIMENSIONS AND WEIGHTS UTR-S 20 UTR-S 30 UTRR-S 15/45 UTR-X 20 UTR-X 30 UTRR-X 15/45
L – Width mm 850 850 960 850 850 960
H – Height mm 255 255 260 255 255 260
P – Depth mm 1150 1150 1000 1150 1150 1000
Weight kg 82 82 75 82 82 75
OPERATING RANGE
Winter operating conditions Indoor Air 10°C / 25°C Outdoor Air -20°C / 20°C
Summer operating conditions Indoor Air 18°C / 28°C Outdoor Air 20°C / 38°C
  • Preliminary data at the following conditions:
  • In open field, 1 m from the unit, according to EN 3744; available static pressure 50 Pa.
  • Outdoor air – 5°C RH 80%; ambient air 20°C, RH 50%.
  • Outdoor air 35°C, RH 50%; ambient air 27°C, RH 60%.
  • At the nominal flow rate.

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Technical notes

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