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Electronically controlled twin plate hydraulic heat interface unit (HIU), designed to provide instantaneous hot water and heating to the dwelling.

Features and benefits:

  • Domestic hot water (DHW) output up to 60 kW.
  • Heating (HTG) output up to 10 kW.
  • DHW and HTG controlled by pressure independent control valves (PICVs).
  • Fully insulated expanded polypropylene (EPP) casing.
  • Innovative cooling area to reduce ambient temperatures to extend component life.
  • Heat meter and pressure gauge visible with casing installed.
  • Insulated case constructed in three sections to improve access for maintenance and commissioning.
  • Standing heat loss of: 60 or 70°C: 31 W.
  • vTherm°e achieved the lowest Volume-Weighted Average Return Temperatures (VWART) at a primary flow temperature of 60°C of any BESA tested HIU: 70°C: 27.9°C (VWART). 60°C: 29°C (VWART).
  • In periods with no DHW or heating demand, the HIUs standing heat loss shall be a maximum of 32 W.
Platform Compatible Version Certified to
IFC IFC - 1 2.1
Revit Revit - 1 2.1

  • Properties and values
  • More information

Properties and values

IFC
IfcExportAs
IfcHeatExchangerType
IfcExportType
PLATE
COBie
BOS_General
NBS_Data
AccessoriesOtherRequirements
Apartment weather compensation, Bluetooth, Flushing bypass assembly, Intelligent data collection, M-Bus, Modbus, Radio, RJ45, Wi-Fi, NBIoT,
Casings
Fully insulated EPP casing
ComponentsControls
The HIU is electronically controlled. The HIU controller shall utilize the secondary side DHW and heating temperatures to control Pressure Independent Control Valves (PICVs) located on the primary side of both plate heat exchangers to maintain the temperature. A keep warm function maintains a primary flow temperature at the unit
ComponentsPrimary
Manufacturer's standard
ComponentsSecondary
Manufacturer's standard
DutyFlowRate
0.32 litres per Second - DHW
DutyHeatingSupplyTemperature
Maximum 80°C
DutyHotWaterSupplyTemperature
Maximum 60°C
DutyPressureDrop
<50 kPa (primary side), <10 kPa (heating)
DutyPrimaryFlowTemperature
60ȓ90°C
DutyPrimaryReturnTemperature
70°C Primary Flow = 27.9°C ȓ 60°C Primary Flow = 29°C (Volume-Weighted Average Return Temperatures (VWART))
ElectricalRequirements
230 V, 5 A (50 Hz) ȓ Maximum power consumption: 60 W
Insulation
Expanded polypropelene
OverallSoundPowerLevel
31.8 dB
PerformanceHeatingCapacityMinimum
10 kW
PerformanceHeatingSecondaryFlowTemperatureRadiators
60°C
PerformanceHeatingSecondaryFlowTemperatureUFH
45°C
PerformanceHeatingSecondaryReturnTemperatureRadiators
40°C
PerformanceHeatingSecondaryReturnTemperatureUFH
35°C
PerformanceHIUPrimaryPressureRating
16 bar
PerformanceHotWaterSystemHWSCapacityMinimum
60 kW
PerformanceHWStemperature
55°C
PerformanceMaximumHIUPrimaryDifferentialPressure
4 bar
PerformanceMaximumSecondaryHeatingWorkingPressure
2.5 bar
PerformanceMaximumSecondaryMainColdWaterMCWDomesticHotWaterDHWPressure
10 bar
PerformanceMinimumMCWPressure
1 bar
PerformanceSecondaryHeatingSafetyReliefValvePressure
3 bar
Standard
CE, BESA, WRAS
Weight
30 kg (dry), 35 kg (wet)
Pset_ElectricalDeviceCommon
Pset_HeatExchangerTypeCommon
Pset_HeatExchangerTypePlate

More information

  • NBS specification data