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QB37 - Humidity controlled ventilation
Certification manual
Certification manual QB
Documents
Référentiel de certification (FR)

Scope of the programme

  • The following products can be certified under this program Humidity-controlled air inlets with or without through-wall accessories (CHY1),
  • 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),
  • 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.
  • Humidity-controlled exhaust vents and humidity-sensitive grilles (CHY3),
  • Non-humidity-controlled and non-self-regulating exhaust vents and grilles used in humidity sensitive ventilation systems (CHY4),
  • Multi- or mono-channel mechanical extraction units, possibly associated with a distribution plenum and possibly integrated into a thermodynamic water heater operating on the extracted air. They are intended for implementation in individual dwellings and collective dwellings treated individually. The units can cover at least the configurations in Hygro A and Hygro B (CHY5).
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.

Definitions

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.
 
 

Certified performance items

The certified characteristics are as follows:
Products             Certified characteristcs

Humidity-controlled air inlets (CHY1)

  • Aeraulic characteristics: flowrate vs relative humidity,
  • 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.
  • 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.
  • Sound power level (own noise): LwA expressed in dB (A) at Pmax - 15%.
Extraction units (CHY5)
  • Aeraulic characteristics: flow vs pressure at the limits of use defined in the Technical Assessment (at minimum flow, maximum flow and maximum reduced flow)
  • Weighted electrical power of the extraction unit: Power expressed in W-Th-C for each configuration of the field of use.
  • 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)