VES ecovent NRG Manuel d'utilisateur télécharger pdf (Page 10)

HEAT RECOVERY AIR HANDLING UNITS

Sizes 7,8&9

Design Details

50mm double skinned case certified to EN 1886 standard.

Direct drive centrifugal plug fans complete with prewired inverter for energy saving,

and rapid site commissioning. The fan is fully vibration isolated from the case

internally with A.V. mounts and flexible connection. All fan motors are for 400 volt

3 phase 50 Hz.

High efficiency cross flow plate heat exchanger, with condensate drain pan, and fitted

face and bypass damper with 230 volt actuator.

Optional fitted controls, prewired to all internal components.

Filter fitted to both supply and extract inlet, pleated, synthetic, grade G4.

Built in LPHW coil or EHB in up to 9 steps of control.

Units available plantroom or weatherproof, flat or stacked configuration. Internal units

built using an aluminium tubular frame, and galvanised steel sheet panels with resin

bonded mineral wool slab infill. External units supplied with sloping roof, channel base,

inlet and exhaust cowls and powder coat finished in Signal Grey to RAL 7004.

High efficiency filters, cooling and heat pump coils available.

Quick change plug connectors fitted to all electrical components for easy maintenance.

Electrical Details

Sound Power Level PWL, dB, linear, in accordance with ISO13347-1:2004

Noise levels stated are at the pressure side of the fan. At suction side the levels are 2dB lower at all points. They are at mid-duty point on the fan curves.

Noise Breakout from Ecovent NRG Cases The sound reduction for the unit cases size 7 - 9 is as follows:

Centre Frequency Hz: 63 125 250 500 1k 2k 4k 8k

Sound Reduction, IL, dB 4 8 16 29 32 30 36 34

This case sound reduction I.L. should be deducted from the fan sound power spectrum, and further deduction made for

measurement distance from case - 1 metre 8 dB, 2 metres 12 dB, 3 metres 14 dB, 6 metres 24 dB.

This distance figure should be deducted from each octave band and will result in a sound pressure level spectrum at that distance.

To further reduce noise breakout, heavy weight panel infills are available.

Ecovent Fan Speed Centre Frequency Hz Casing Noise Breakout

NRG RPM 63 125 250 500 1k 2k 4k 8k NR @ 1m NR @ 3m

7-35Hz 1000 62 65 69 68 64 60 55 51 35 30

7-45Hz 1280 66 70 73 73 69 64 60 56 40 35

7-55Hz 1580 70 74 78 78 74 70 65 61 45 40

7-65Hz 1825 73 77 81 82 78 74 69 65 50 45

7-75Hz 2115 76 80 85 85 82 77 73 69 50 45

7-85Hz 2480 79 84 88 88 85 81 77 73 55 50

8-30Hz 860 63 67 70 69 65 61 56 52 35 30

8-40Hz 1150 6771747469656156 40 35

8-50Hz 1450 72 76 79 79 75 71 66 62 45 40

8-60Hz 1700 7579838380757166 50 45

8-70Hz 2000 78 82 87 87 83 79 75 70 55 50

8-80Hz 2250 81 85 90 90 86 82 78 73 60 55

9-30Hz 852 6770737268635954 40 35

9-35Hz 1003 70 74 77 76 72 68 63 59 45 40

9-40Hz 1140 7377807975716762 50 45

9-45Hz 1286 75 79 83 83 78 74 70 65 50 45

9-50Hz 1419 78 81 85 85 81 77 72 68 55 50

9-55Hz 1550 79 83 87 87 83 79 74 70 55 50

Control details p4 / 5

Specific F

an power p12 / 13

Unit dimensions p18 / 19

Silencer dimensions p21

LPHW heater details p22

Fan commissioning p24

Sound Data

Unit size 7 8 9

Fan power, kW, per fan 2.2 3.0 3.0

Fan FLC, amps, max 4.7 6.4 6.4

To select an electric heater use the formula on page 4.

A control panel will be designed in the VES Sales Department to match the components selected for the AHU.

Sound Spectrum dB re10

-12

w PWL

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 23 24

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VES ecovent NRG Manuel d'utilisateur Page 10

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