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Non-humidity-controlled and non-self-regulating air inlets used in humidity sensitive ventilation systems (CHY2):
intrinsically
- Having acoustic insulation (Dn,e,w + Ctr) greater than or equal to 36 dB (A),
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Having an acoustic insulation (Dn,e,w + Ctr) greater than or equal to 36 dB (A), by association with inseparable acoustic accessories, defined in the Avis Technique (Technical Assessment), e.g. extension or spacer type. It excludes through-wall mounting accessories.
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Humidity-controlled exhaust vents and humidity-sensitive grilles (CHY3),
These products are part of single flow mechanical ventilation systems controlled humidity-sensitive devices, subject to a proven positive evaluation of fitness for use, with reference, for example, to a DTU, a Technical Assessment or any technical evaluation in a construction process integrating a mechanical ventilation system controlled by simple humidity-sensitive flow, proven positive and compatible with the other processes to which this process is combined for the realization of a structure.
| Hygro A type humidity-sensitive single-flow CMV system: |
Humidity-controlled single-flow CMV system in which all the air inlets are self-adjusting or fixed. |
| Hygro B type humidity sensitive single flow CMV system: |
Humidity-controlled single-flow CMV system with at least one air inlet that is humidity-sensitive for each of the main rooms of the accommodation except for T1 type housing where they can be self-adjusting or fixed. |
The certified characteristics are as follows:
| Products |
Certified characteristcs |
|
Humidity-controlled air inlets (CHY1)
|
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Aeraulic characteristics: flowrate vs relative humidity,
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Standardized acoustic insulation (Dn, e,w + Ctr) expressed in dB(A) for its maximum opening.
|
|
Non-humidity-controlled and non-self-adjusting air inlets (CHY2)
|
-
Aeraulic characteristics: flowrates vs pressure (average of the measured flowrate for increasing and then decreasing pressures),
-
Standardized acoustic insulation of the air inlet or the air inlet with its inseparable acoustic accessories defined in the Technical Assessment (Dn, e, w + Ctr) expressed in dB(A).
|
|
Humidity-controlled exhaust vents and humidity-controlled grilles (CHY3)
|
-
Aeraulic characteristics: flowrate vs relative humidity. For timed vents or grilles, additional measurements of the timed nominal flowrate at the verification pressure defined in the Technical Assessment and its duration are certified.
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Sound power level (own noise): LwA expressed in dB(A) at pressure Pmax - 15% with a 60% relative humidity. Standardized acoustic insulation of a pair of outlets (intercom): (Dn, e, w + C) expressed in dB(A) only for outlets installed in collective dwellings. It is determined for outlets installed in kitchens and bathrooms.
|
|
Non-humidity-controlled and non-self-regulating extraction vents and grilles (CHY4)
|
-
Aeraulic characteristic: flow vs pressure. For timed vents, additional measurements of the timed nominal flowrate and its duration at the verification pressure defined in the Technical Assessment are certified.
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Sound power level (own noise): LwA expressed in dB (A) at Pmax - 15%.
|
|
Extraction units (CHY5)
|
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Aeraulic characteristics: flow vs pressure at the limits of use defined in the Technical Assessment (at minimum flow, maximum flow and maximum reduced flow)
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Weighted electrical power of the extraction unit: Power expressed in W-Th-C for each configuration of the field of use.
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Acoustic characteristics: Sound power level through the kitchen opening, open to 60% RH or in the maximum opening position if no template is provided by the manufacturer, targeted by the maximum configuration: LwA expressed in dB (A)
|
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