GRH 40÷450

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GRH 40÷450
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GRH 40÷450

Heat Recovery Unit from 380 to 4.500 m³/h with VERY HIGH EFFICIENCY exchanger

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A ventilation unit designed and manufactured for non-residential applications allows combining the need for air renewal with maximum energy saving. Equipped with a counterflow heat recovery unit in aluminium plates, it specifically meets the requirements of EU Regulation no. 1253/2014. By nature, they are units that generally tend to integrate with traditional heating/air conditioning systems, even if, equipped with the appropriate accessories, they can be used completely on their own. The series, both in horizontal and vertical set-up, is divided into six sizes, for air flow rates ranging from 380 to 4500 m³/h.

Versions

  • GRH/HA - Horizontal installation A type configuration
  • GRH/HB - Horizontal installation B type configuration
  • GRH/VC - Vertical installation C type configuration
  • GRH/VD - Vertical installation D type configuration

Features

  • The structure is made with 25 mm thick insulated panels in galvanised sheet metal on the inside and RAL 9002 pre-painted finish on the outside, internally insulated with non-flammable mineral wool thermal-acoustic insulation.
  • Compact filters with synthetic media (external layer) and glass fibre media (internal layer) and galvanised steel frame, in the efficiency class ePM10 50% on the ambient air intake and ePM1 50% on the outdoor air intake, removable on the bottom. Each filtering station is already equipped with a control pressure switch wired on board and suitable to house two filters in sequence.
  • EC Inverter Plug-Fans.
  • The high-efficiency heat recovery unit is of the air-to-air counterflow flow type with aluminium exchange plates with an integrated by-pass system for free-cooling operation.
  • Electrical board built-in in the unit with electronic adjustment and remote user interface for complete control of all features: ventilation and temperature control, filter status monitoring, weekly programming, defrost and antifreeze management, fire alarm management and Modbus interface.

Factory fitted accessories

  • FTF9 Plate filters efficiency F9 ePM1 85% - Second stage
  • AT Constant air flow regulation control
  • EHP Supplementary electrical heater-PRE
  • EHR Supplementary electrical heater-POST

Loose accessories

  • CRT Touch screen remote control panel
  • PMM Multidirectional plenum
  • BCF Nozzle for circular ducts - Frontal
  • BCL Nozzle for circular ducts - Lateral
  • SK1 Adjustment damper - Frontal
  • SK2 Adjustment damper - Lateral
  • SM Servo-motor for damper
  • GA1 Anti-vibrating joint - Frontal
  • GA2 Anti-vibrating joint - Lateral
  • WFH Water cooling / heating section - Horizontal
  • WFV Water cooling / heating section - Vertical
  • WXH Direct expansion cooling / heating section - Horizontal
  • WXV Direct expansion cooling / heating section - Vertical
  • SQO Air quality probe (Co2)
  • KSA Sanitization module with UVC plasma and antivirus
  • V33 3-way modulating valve with servo control
  • TTH Roof covering - Horizontal
  • TTV Roof covering - Vertical
  • TTA Roof covering for WFH and WXH - Horizontal
  • TTB Roof covering for WFV and WXV - Vertical
4070115170250330450
Air flowNominalm³/s0,110,200,310,480,680,921,25
Sound pressureSound pressure (1)dB(A)54535159596064
Electrical characteristicsPower supplyV/Ph/Hz230/1/50-60230/1/50-60230/1/50-60230/1/50-60400/3+N/50-60400/3+N/50-60400/3+N/50-60
Motors nominal powerkW0,340,340,730,931,651,923,05
Rated operating currentA2,82,95,06,02,93,44,8
Max. running currentA2,82,96,06,03,43,57,6
Max. motor powerkW0,340,340,920,932,002,004,85
OPERATING RANGEMax. air flow imbalance%30303030303030
Min air temperature°C-20-20-20-20-20-20-20
Max air temperature°C45454545454545
Heat RecoveryRecovery efficiency (2)%92,191,791,791,590,790,891,3
Recovery capacity (2)kW3,56,610,515,622,329,935,2
Delivery temperature (2)°C17,617,517,517,517,217,217,1
Compliance with EU Regulation 1253/2014Recovery efficiency (3)%83,882,882,482,081,481,582,9
Efficiency bonusW/m³/s324294282270252255297
Filter correction factor0000000
Internal SFP limitW/m³/s1408136413351299124912171209
Internal SFPW/m³/s140313011319118312191213992
Electrical heaterHeating capacitykW---------------------
Power supplyV/Ph/Hz230/1/50230/1/50230/1/50230/1/50400/3+N/50400/3+N/50400/3+N/50
Water cooling/heating sectionTotal cooling capacity (4)kW2,464,476,6510,6216,1420,6826,29
Sensible cooling capacity (4)kW1,352,413,665,848,7211,3714,20
Heating capacity (5)kW3,305,869,0812,9720,8327,5033,36
Water flow (4)l/s43275611521836277235644500
Water-side pressure drops (4)kPa1218913191533
Air-side pressure drops (4)Pa51535146505554
Water connections" G3/43/43/43/43/411
Weightkg28313542525877
WeightsTransport weightkg99120199263326405549
Operating weightkg86106181237297367520

Dimensions

4070115170250330450
LHA-HBmm1350147018501850215021502350
VC-VDmm1350147018501850215021502350
WHA-HBmm68082010301460146018401900
VC-VDmm330370455455590590800
HHA-HBmm330370455455590590800
VC-VDmm68082010301460146018401900

Notes

  • 1 Outdoor air circuit side/supply at nominal air flow and 1 m from the unit.
  • 2 Under humid conditions at nominal flow rate: outdoor air at - 10 °C 90% RH, ambient air at 20 °C 60% RH.
  • 3 Under dry conditions at nominal flow rate: outdoor air at 5°C, ambient air at 25°C.
  • 4 At nominal flow rate: air in/out at 28° C 60% RH, water in/out at 7°/12° C.
  • 5 At nominal flow rate: air in/out at 13° C 60% RH, water in/out at 45°/40° C.