Ventilation unit

WS 75 Powerbox S

Article number: 0095.0645
Manufacturer: MAICO
WS 75 Powerbox S ventilation unit with heat recovery. DN 100 outgoing and outside air connections on side. The... more information
Application examples: all rooms up to 60 m², Individual rooms, Hotel rooms, Student apartment, Bedrooms
Product data sheet
WS 75 Powerbox S IM0019231.PNG WS 75 Powerbox S ventilation unit with heat recovery. DN 100 outgoing and outside air connections on side. The Powerbox contains the high-quality, RLS G1 WS room air control made of glass, a highly-efficient enthalpy cross-counterflow heat exchanger, EC centrifugal fans with constant volumetric flow in outside air and outgoing air, temperature and humidity monitoring, 2 ISO Coarse 80 % (G4) filters, volumetric flow range from 20 to 70 m³/h, model: Installation on the (suspended) ceiling or interior wall, accessories needed: SVR 100 plug connector
WS 75 Powerbox S IM0020225.PNG WS 75 Powerbox S ventilation unit with heat recovery. DN 100 outgoing and outside air connections on side. The Powerbox contains the high-quality, RLS G1 WS room air control made of glass, a highly-efficient enthalpy cross-counterflow heat exchanger, EC centrifugal fans with constant volumetric flow in outside air and outgoing air, temperature and humidity monitoring, 2 ISO Coarse 80 % (G4) filters, volumetric flow range from 20 to 70 m³/h, model: Installation on the (suspended) ceiling or interior wall, accessories needed: SVR 100 plug connector
WS 75 Powerbox S IM0019952.PNG WS 75 Powerbox S ventilation unit with heat recovery. DN 100 outgoing and outside air connections on side. The Powerbox contains the high-quality, RLS G1 WS room air control made of glass, a highly-efficient enthalpy cross-counterflow heat exchanger, EC centrifugal fans with constant volumetric flow in outside air and outgoing air, temperature and humidity monitoring, 2 ISO Coarse 80 % (G4) filters, volumetric flow range from 20 to 70 m³/h, model: Installation on the (suspended) ceiling or interior wall, accessories needed: SVR 100 plug connector
WS 75 Powerbox S IM0016031.PNG WS 75 Powerbox S ventilation unit with heat recovery. DN 100 outgoing and outside air connections on side. The Powerbox contains the high-quality, RLS G1 WS room air control made of glass, a highly-efficient enthalpy cross-counterflow heat exchanger, EC centrifugal fans with constant volumetric flow in outside air and outgoing air, temperature and humidity monitoring, 2 ISO Coarse 80 % (G4) filters, volumetric flow range from 20 to 70 m³/h, model: Installation on the (suspended) ceiling or interior wall, accessories needed: SVR 100 plug connector
WS 75 Powerbox S IM0013942.PNG WS 75 Powerbox S ventilation unit with heat recovery. DN 100 outgoing and outside air connections on side. The Powerbox contains the high-quality, RLS G1 WS room air control made of glass, a highly-efficient enthalpy cross-counterflow heat exchanger, EC centrifugal fans with constant volumetric flow in outside air and outgoing air, temperature and humidity monitoring, 2 ISO Coarse 80 % (G4) filters, volumetric flow range from 20 to 70 m³/h, model: Installation on the (suspended) ceiling or interior wall, accessories needed: SVR 100 plug connector
WS 75 Powerbox S IM0016004.PNG WS 75 Powerbox S ventilation unit with heat recovery. DN 100 outgoing and outside air connections on side. The Powerbox contains the high-quality, RLS G1 WS room air control made of glass, a highly-efficient enthalpy cross-counterflow heat exchanger, EC centrifugal fans with constant volumetric flow in outside air and outgoing air, temperature and humidity monitoring, 2 ISO Coarse 80 % (G4) filters, volumetric flow range from 20 to 70 m³/h, model: Installation on the (suspended) ceiling or interior wall, accessories needed: SVR 100 plug connector
Back
  • On the notes
WS 75 Powerbox S
WS 75 Powerbox H

Characteristic curve

WS 75 Powerbox S - Characteristic curve

Dimensioned drawing

WS 75 Powerbox S - Dimensioned drawing [mm]

  1. Supply air
  2. Exhaust air
  3. Outside air
  4. Outgoing air

Technical data

WS 75 Powerbox S - Technical data

Article WS 75 Powerbox S
Model Outgoing and outside air connections on side
Number of ventilation levels 4
Air flow volume 20 m³/h / 70 m³/h / (Factory 20 / 30 / 40 / 50 m³/h)
SEC average -40,82 kWh/(m²*a)
Energy efficiency class A
Type of voltage Alternating current
Rated voltage 230 V
Frequency 50 Hz/60 Hz
Maximum power consumption 5,2 W / 6,1 W / 8,3 W / 11,5 W
Stand-by power consumption < 1 W
Imax 0,2 A
Degree of protection IP 00
Electrical plug-type connection Terminal
Installation site (Suspended) ceiling / Inside wall
Type of installation Recessed-mounted
System type decentralised/centralised
Housing material Plastic EPP
Heat exchanger material Synthetic material
Inner coating material EPP
Colour traffic white RAL 9016 (matt fine structure)
Weight 17,5 kg
Weight including packaging 20,5 kg
Type of filter Outside and exhaust air filter
Filter class ISO Coarse 80 % (G4) / optional ISO ePM1 60 % (F7)
Connection diameter 100 mm / 75 mm
Width 640 mm
Height 1.040 mm
Depth 155 mm
Width with packaging 660 mm
Height with packaging 1.060 mm
Depth with packaging 180 mm
Airstream temperature at IMax -15 °C up to 60 °C
Ambient temperature 10 °C up to 40 °C
Degree of heat provision 93 % / at 20 m³/h
Heat exchanger construction type Enthalpy cross-counterflow
Humidity recovery with enthalpy heat exchanger in accordance with DIN EN 13141-7 (A2) 75 %
Permissible humidity in installation room 80 %
Bypass No
Frost protection optional
Enthalpy heat exchanger yes
Antifreeze circuit yes
Summer circuit ECO exhaust air / ECO supply air
Filter monitoring with time control
Humidity control integrated
CO2 regulation WS 75 CO2, PP 45 CO2, SKD
Air quality control (optional) WS 75 VOC, PP 45 VOC
KNX connection (optional) K-SM
MODBUS interface integrated
Control unit included in scope of delivery. RLS G1 WS, APP
EnOcean wireless integration (optional) yes
Mobile control yes
Sound pressure level 15 dB(A) / 16 dB(A) / 19 dB(A) / 20 dB(A) / Flush mounting, distance of 1 m free-field conditions
Rated max. element normal difference in noise level Dn,w 56 dB / measured with backflow preventer and combination wall socket, 62 dB measured with backflow preventer and soffit element
Rated sound reduction index Rw,R 31 dB / measured with backflow preventer and combination wall socket, 37 dB measured with backflow preventer and soffit element
Packing unit 1 piece
Range K
GTIN (EAN) 4012799956457
Article number 0095.0645

 

63 Hz

125 Hz

250 Hz

500 Hz

1 kHz

2 kHz

4 kHz

8 kHz

Total

LWA2, 50 m³/h (dB(A))

13

21

20

23

22

15

14

13

28,4

LWA5, 50 m³/h (dB(A))

16

22

26

26

24

13

14

13

31,2

LWA6, 50 m³/h (dB(A))

17

20

26

29

27

13

14

13

32,7

LWA2= housing sound power level in dB.

LWA5= free inlet sound power level in dB.

LWA6= free outlet sound power level in dB.

Accessories / Spare parts

WS 75 Powerbox S - Accessories / Spare parts

Specific accessories

Product type Name Art. No. Price*(EUR) Action
Radio switch DS RC 0157.0832 on request
  • On the notes
Humidity sensor PP 45 HY 0157.0365 on request
  • On the notes
CO2 sensor PP 45 CO2 0157.0366 on request
  • On the notes
VOC sensor PP 45 VOC 0157.0367 on request
  • On the notes
Combi-wall connections Duo KWS E 0093.1440 on request
  • On the notes
Combi-wall connections Duo KWS W 0093.1441 on request
  • On the notes
Soffit element Duo LE 0093.0087 on request
  • On the notes
Soffit element extension Duo LEV 0093.0089 on request
  • On the notes
End plug WS 75 S 0058.0504 on request
  • On the notes
Air filter, replacement WS 75 F7 0093.1588 on request
  • On the notes
Air filter, replacement WS 75 G4 0093.1589 on request
  • On the notes
Supplementary heating WS 75 NH 0093.1586 on request
  • On the notes
Room air control RLS G1 WS 0157.1593 on request
  • On the notes
Sealing kit RLS G1V 0093.1591 on request
  • On the notes
Combi sensor WS 75 CO2 0157.1592 on request
  • On the notes
Combi sensor WS 75 VOC 0157.1591 on request
  • On the notes
Combi-wall connections KWH 12 L 0152.0059 on request
  • On the notes
Combi-wall connections KWH 12 R 0152.0058 on request
  • On the notes
Plug connectors for ducts SVR 100 0055.0188 on request
  • On the notes
EnOcean plug-in module E-SM 0092.0556 on request
  • On the notes
KNX plug-in module K-SM 0092.0557 on request
  • On the notes

General accessories

Product type Name Art. No. Price*(EUR) Action
Ventilation duct, thermally insulated MT-R125 0059.0981 on request
  • On the notes
Ventilation elbow, thermally insulated MT-B125 90/45 0059.0983 on request
  • On the notes
Ventilation duct connector MT-V125 0059.0985 on request
  • On the notes
Ventilation duct coupling MT-Üa125 0059.0987 on request
  • On the notes
Mounting clamp MT-LS125 0018.0065 on request
  • On the notes
Flexible duct MF-F75 0055.0096 on request
  • On the notes
Sealing ring MF-FDR75 0175.0262 on request
  • On the notes
Insertion sleeve MF-FSM75 0059.0974 on request
  • On the notes
Bracket MF-WL100 80/200 0018.0530 on request
  • On the notes
Bracket MF-WL125 80/200 0018.0531 on request
  • On the notes
Slide-in adaptor MF-WE75 0059.0972 on request
  • On the notes
Flexible duct MA-FR75 0152.0091 on request
  • On the notes
Wall sleeve WW90 New development 0095.0664 on request
  • On the notes
Disk valve, synthetic material TK 10 0151.0192 on request
  • On the notes
Disk valve, metal TFA 12 0151.0370 on request
  • On the notes
Disk valve, metal TFZ 12 0151.0365 on request
  • On the notes
Mounting frame for TFA/TFZ EBR-D 12 0092.0494 on request
  • On the notes
CO2 sensor SKD 0157.0345 on request
  • On the notes

Spare parts

Product type Name Art. No. Price*(EUR) Action
Supplementary heat register cover NHA WS 75 E175.0332.0000 on request
  • On the notes
Filter locking cover FA G4 WS 75 E175.0330.0000 on request
  • On the notes
Filter locking cover FA F7 WS 75 E175.0331.0000 on request
  • On the notes
Housing cover GD WS 75 E018.1396.0000 on request
  • On the notes
Screw set for housing cover GD SR WS 75 E158.0565.0000 on request
  • On the notes
USB cable USB WS 75 E157.1251.0000 on request
  • On the notes
Ribbon cable FBK WS 75 E157.1597.0000 on request
  • On the notes
Circuit board ST WS 75 E093.1610.0000 on request
  • On the notes
Bracket for room air control HB WS 75 E093.1620.0000 on request
  • On the notes
Mounting plate for room air control MP RLS WS 75 E059.2078.0000 on request
  • On the notes
Humidity and temperature sensor SE WS 75 HAT E157.1609.0000 on request
  • On the notes
Temperature sensor SE WS 75 T E157.0165.0000 on request
  • On the notes
Fans V WS 75 E156.0191.0002 on request
  • On the notes
WLAN antenna WLANA WS 75 E157.1614.0000 on request
  • On the notes
Enthalpy heat exchanger ETWT WS 75 E192.0704.0000 on request
  • On the notes
Locking plate for enthalpy heat exchanger WTS WS 75 E018.1400.0000 on request
  • On the notes

Product description

Productdescription

WS 75 Powerbox S

short description

WS 75 Powerbox S ventilation unit with heat recovery. DN 100 outgoing and outside air connections on side. The Powerbox contains the high-quality, RLS G1 WS room air control made of glass, a highly-efficient enthalpy cross-counterflow heat exchanger, EC centrifugal fans with constant volumetric flow in outside air and outgoing air, temperature and humidity monitoring, 2 ISO Coarse 80 % (G4) filters, volumetric flow range from 20 to 70 m³/h, model: Installation on the (suspended) ceiling or interior wall, accessories needed: SVR 100 plug connector

Product description

Model

  • Mounting options: ceiling mounted or in a sloped roof.
  • DN 100 outgoing and outside air connections on side.

Brief description

  • Intelligent ventilation unit with heat and humidity recovery for controlled ventilation and air extraction with an air volume of 20 to 70 m³/h
  • Very quiet unit with extremely good sound insulation properties.
  • Complete separation of exhaust air/supply air ducts throughout the unit. This prevents unwanted recirculation of air. Viruses (e.g. Corona virus) and bacteria are therefore not transmitted.
  • Hygiene certificate according to VDI 6022, sheet 1 available.
  • Compact and highly efficient – energy efficiency class A. Sound and energy-optimised fans in EC technology: 6.1 W in level 2 (30 m³/h) for the entire ventilation unit.
  • Especially suitable for modern new buildings and redevelopments.
  • Eligible for KfW funding and entry in the TZWL bulletin (NRW funding programme).
  • Plug & Play: Simple commissioning, free commissioning software.
  • No pressure fluctuation sensitivity: The integrated/automatic volumetric flow constancy control ensures permanent compliance with the set volumetric flow under all operating conditions (e.g. filter contamination, air valve settings). This also results in easier commissioning/air volume measurement at the valves. The volumetric flows do not require any adjustment.
  • Various operating modes: Off, Manual, Auto Sensor, ECO exhaust air, ECO supply air.
  • Display of air quality via LED.
  • High-quality RLS 1 GS room air control (made of glass) included in scope of delivery.
  • ISO Coarse 80 % (G4) filter in the exhaust and outside air. On the outside air side, a filter cascade with an ISO ePM1 60 % (F7) pollen filter is optionally available. Filter can be changed without tools.
  • The Powerbox H is equipped with a state-of-the-art enthalpy heat exchanger with hygiene certificate according to VDI 6022, sheet 1.
  • Combi sensor (humidity/temperature) integrated as a standard feature in the exhaust air enables demand-driven ventilation operation as well as an intelligent frost protection and dehumidification strategy (excess humidity protection).
  • Bypass mode / Eco mode: ECO supply air, ECO exhaust air for passive summer night cooling.
  • The Powerbox can be controlled via the APP (air@home) and via the browser-based web tool (www.air-home.de) using an integrated W-LAN interface.
  • Standard USB interface for commissioning.
  • The unit has a multifunction contact for the control of, e.g., alarm / operating display / supplementary heating / pre-heating / shutter.
  • One input contact (12 V) is available for, e.g., safety shutdown.
  • Various inputs/outputs enable a control connection to other building service installations, e.g., the heat pump.
  • Integrated MODBUS interface (TCP) enables integration in the building control system.
  • The optional K-SM plug-in module enables integration into KNX building control systems.
  • The optional E-SM plug-in module enables integration into EnOcean systems.
  • Maximum unit flexibility thanks to a wide range of equipment/connection options
  • Modern unit module technology allows easy retrofitting (e.g. pre-heating) as well as high user-friendliness for service and maintenance.
  • Application areas: Rooms up to 60 m²: Student rooms, nursing homes, assisted living, hotel rooms, offices, meeting rooms, waiting rooms.

Features

Housing

  • Housing with high air tightness made of thermal bridge-free, temperature-resistant, sound-absorbing and heat-insulating EPP material with powder-coated sheet metal cladding (colour: RAL 9016 Traffic White – fine matt structure.
  • EPP housing with very good hygienic / non-hygroscopic properties.
  • Material checked by the Institute for Air Hygiene in accordance with VDI 6022.
  • Unit surface and unit’s internal housing are easy to clean.

Filter:

  • ISO Coarse 80 % (G4) filter in the exhaust and outside air. On the outside air side, a filter cascade with an ISO ePM1 60 % (F7) pollen filter is optionally available.
  • Filter exchange without tools.

Recommended accessories:

  • WS 75 Powerbox S
    • SVR 100 plug connector (item no. 0055.0188)
  • WS 75 Powerbox H
    • Surface-mounting shell installation kit: WS 75 RSAP (item no. 0093.1615) or flush-mounting shell installation kit: WS 75 RSUP (item no. 0093.1616)
    • Surface-mounting cover: WS 75 APA (item no. 0093.1617) or flush-mounting cover: WS 75 UPA (item no. 0093.1618) or glass flush-mounting cover: WS 75 UPGA (item no. 0093.1619)

Optional accessories:

  • Soffit element Duo LE (item no. 0093.0088)
  • Duo LEV soffit element extension (item no. 0093.0089).

Operation

  • RLS G1 WS room air control included in the scope of delivery: On/off, 5 manually adjustable air levels (e.g. ventilation for humidity protection, ventilation for reduced ventilation, nominal ventilation, intermittent ventilation and intensive ventilation), automatic operation, filter change indicator, fault indicator.
  • WS 75 Powerbox S: The control is mounted externally on the flush-mounted box.
  • WS 75 Powerbox H: Control mounted directly on the unit or externally on a flush-mounted box.
  • Mobile operation via APP (air@home) or browser-based web tool (www.air-home.de) via smartphone, laptop or PC enables, e.g.,
    • live reporting, user management
    • Demand-driven automatic operation / time-controlled automatic operation
    • Manual operation / OFF
    • ECO mode supply air or ECO mode exhaust air
    • Filter queries, error messages
  • USB connection for service/commissioning – free MAICO commissioning software.
  • Network integration via integrated 2.4 GHz WLAN module.
  • Smart-Home ready (e.g. Loxone via MODBUS TCP/IP).
  • Modbus TCP in progress.
  • Optional KNX plug-in module K-SM for integration into building control system, www.knx.org.
  • Optional EnOcean plug-in module E-SM for integrating the unit into the “EnOcean world”, www.enocean-alliance.org.

Control

  • Standard demand-driven volumetric flow regulation (“decisive humidity value”).
  • Continuously variable demand-driven adaptation of air volumes.
  • Integrated excess humidity protection function.
  • 3 temperature sensors in outside, outgoing and supply air.
  • 1 combi sensor (temperature and humidity) in exhaust air socket.
  • Alternative accessory sensors for the exhaust air socket. Combi sensor temperature-humidity-CO2 or temperature-humidity-VOC.
  • Up to two external sensors of different types (CO2, VOC, humidity) can be connected.
  • Multifunctional contact for the control of, e.g., operation and fault display, heat register, shutters or cooling.
  • Input for safety shutdown via 12V contact (e.g. smoke detector, fire alarm, differential pressureless fireplace).
  • Sleep function: Unit is switched off for an adjustable period of time to fall asleep and then starts up again.

Approvals and certificates

  • Test report in accordance with DIN EN 13141-8.
  • Hygiene certificates for housing material (EPP) and heat exchanger.
  • Entry in TZWL/TZWL bulletin.

Heat exchanger / heat recovery

  • Highly efficient enthalpy cross-counterflow heat exchanger.
  • Heat recovery up to 93 % and humidity recovery up to 75 %.
  • Hygiene certificate (no bacteria, virus growth/virus transfer) according to VDI 6022, sheet 1.
  • Heat exchanger can be cleaned with water, antimicrobial.
  • No condensation connection required.

Bypass

  • Eco mode: ECO supply air, ECO exhaust air for passive summer night cooling.

Frost protection

  • Prevention of heat exchanger freezing at low temperatures by monitoring the outgoing air temperature.
  • If there is a risk of frost, the outside air volumetric flow rate is gradually reduced.

Fans

  • Centrifugal fans in outside air and outgoing air.
  • Energy-efficient EC direct current motors with integrated volumetric flow consistency control.
  • 4 ventilation levels from 20 m³/h to 70 m³/h, can be adjusted continuously.

Installation information

  • Installation on the suspended ceiling or interior wall.
  • Recommended core drill hole: Minimum diameter, 105 mm.
  • Easy, very time-saving installation by folding down and screwing the fastening lugs directly onto the unit.
  • Housing cover can be removed with ease.
  • The system requires no adjustment.
  • The unit is assembled and ready for service. The electrical supply is connected using permanent wiring.

Table of contents

Wiring diagram

WS 75 Powerbox S - Wiring diagram

Terminals and cables

A - WS 75 comfort Powerbox ventilation unit

X-D - Connection terminal mains / devices, internal

W1 - 230V AC connecting cable

W2 - 230VAC connecting cable

for outside air fan (LIYY 4 x 0.5mm²)

W2 - 230VAC connecting cable

for outgoing air fan (LIYY 4 x 0.5mm²)

W3 - Connecting cable for PTC heat register

W4 - Connecting cable for internal sensor module

W5 - Connecting cable for RLS G1 WS control unit

W-Ant - Connecting cable PLC WLAN antenna

W-PMS - Connecting cable fine dust sensor / ready-made

X-RLS - RLS plug connector

Component

M1 - Outside air/supply air fan

M2 - Exhaust air/outgoing air fan

HR - Supply air supplementary heat register, optional

T-FOL - Temperature sensor for NTC outgoing air

T-AUL - Temperature sensor for NTC outside air

T-ZUL - Temperature sensor for NTC supply air

S-ABL - Sensor module for exhaust air

RLS G1 WS - RLS G1 WS control unit

PMS - Exhaust air fine dust sensor, optional

WLAN ant. - WLAN antenna

Further connection options

X11 - ER ETA connection for control cable for outgoing air fan

X11 - ER SUP connection for control cable for outside air fan

X02 - Connection terminal for external safety device, contact potential 12VDC

X6 - MFC - multi-function contact, potential-free relay contact 230VAC/5A // 30VDC/5A

X01 - Slot for optional EnOcean/KNX communication plug-in module

USB - USB service port

M1-IN1 - Status input1 - OUTSIDE/SUPPLY AIR fan - 230VAC, note optocoupler input configuration

M1-IN2 - Status input2 - OUTSIDE/SUPPLY AIR fan - 230VAC, note optocoupler input configuration

M2-IN1 - Status input1 - EXHAUST/OUTGOING AIR fan - 230VAC, note optocoupler input configuration

M2-IN2 - Status input2 - EXHAUST/OUTGOING AIR fan - 230VAC, note optocoupler input configuration



W6 - Connecting cable for external component. Recommended cable type LIYCY 4x0.34mm². If the control unit is connected outside the unit, the cable shield must be connected to the electronics sheet.

W6.1 - Connecting cable for external Sensor1. Recommended cable type LIYCY 4x0.34mm². The total length of cable between the control and sensor must not exceed 25 metres.

W6.2 - Connecting cable for external Sensor2. Recommended cable type LIYCY 4x0.34mm². The total length of cable between the control and sensor must not exceed 25 metres.

W6.3 - Connecting cable for external control unit RLS G1 WS. Recommended cable type LIYCY 4x0.34mm². The total length of cable between the control and sensor must not exceed 25 metres.



A1 - PB WS 75 ventilation units, comfort

W1 - 230V AC connecting cable

W2 - 230VAC connecting cable

for outside air fan (LIYY 4 x 0.5mm²)

W2 - 230VAC connecting cable

for outgoing air fan (LIYY 4 x 0.5mm²)

DI1 - Digital input1 / Status input1 OUTSIDE/SUPPLY AIR fan Select contact type depending on function, observe configuration of digital inputs

DI2 - Digital input2 / Status input2 OUTSIDE/SUPPLY AIR fan Select contact type depending on function, observe configuration of digital inputs

DI3 - Digital input3 / Status input1 EXHAUST/OUTGOING AIR fan Select contact type depending on function, observe configuration of digital inputs

DI4 - Digital input4 / Status input2 EXHAUST/OUTGOING AIR fan Select contact type depending on function, observe configuration of digital inputs

W7 - Connection cable multifunctional contact MFC, potential-free signalling and function relay contact, max. 230VAC/5A // 30VDC/5A. Note configuration

W8 - Connecting cable for external unit release (optional) or safety device. Contact potential 12VDC, external contact type to be used: NC

M1-IN1 - Status input1 - OUTSIDE/SUPPLY AIR fan - 230VAC, note optocoupler input configuration

M1-IN2 - Status input2 - EXTERNAL/SUPPLY AIR fan - 230VAC, note optocoupler input configuration

M2-IN1 - Status input1 - EXHAUST/OUTGOING AIR fan - 230VAC, note optocoupler input configuration

M2-IN2 - Status input2 - EXHAUST/OUTGOING AIR fan - 230VAC, note optocoupler input configuration



Predecessor - successor

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