Passyfier Sleeved 75AB Vent

Passyfier Sleeved 75AB Vent

The Passyfier Sleeved 75AB Vent provides an opening on a section of wall normal to the airflow direction. Airflow through the opening is controlled automatically by the intervening mineral wool slab and thereby avoids undue draughts.

It is important to realise that the release of moisture vapour pressure within a dwelling to avoid condensation does not require a specific ventilation rate.

The moisture vapour pressure within a dwelling is always higher than the outside pressure therefore there will always be an escape of moisture vapour by the diffusion process through the Passyfier Vent.

The diffusion process is slow compared with mechanical ventilation and would not cope with the copious amount of water vapour produced in a short time scale without the combined use of mechanical ventilation in kitchens and bathrooms.

Its main use is in habitable rooms where it operates continuously without noise and over a 24 hour period can extract a maximum of 0.75 litres of water/day even at low vapour pressures.

Key Features & Benefits:

• Maximum Water Vapour Transmission Per Kit = 0.75 Litres / 24 hours
  
  

• Maximum Floor Area Guide Per Vent Kit = 5m²
  
  

• Used In Solid, Cavity & Timber Frame Walls
  
  

• Being Non-Mechanical Works Passively 24 Hours Per Day
  
  

• Makes No Noise & Has No Moving Parts
  
  

• Easy installation to replace an existing single airbrick wall vent kit (Cannot be used to replace an existing combustion air vent.)
  
  

• Reduces Draughts & Heat Loss But Still Provides Ventilation
  
  

• Costs Nothing To Run
  
  

• Works At Peak Condensation Time
  
  

• No Night Time Disturbance From Fans Or Compressors

Recommendations:

1. Allow one vent per cupboard / wardrobe space or box room with a maximum floor area not exceeding 5m².
   
   

2. Kill any mould that exists on the floor, wall and ceiling surfaces with a good quality fungicidal wash before redecorating (See our Mould Eradication Range).
   
   

3. Install the Passyfier Vent at a high level in retrofit and new-build applications if possible.
   
   

4. Use the Passyfier Sleeved Vent Kit where ever practical to maximise the transmission of water vapour.
   
   

Note: Passyfier Vents are used as an aid to help control humidity and are NOT to be used as a method of providing ventilation to any gas, oil, or solid fuel appliance.

Technical Data:

• Maximum Water Vapour Transmission: 0.75 Litres Per 24 Hours
  
  

• Maximum Floor Area Per Vent Kit: 5m²
  
  

• Maximum Wall Thickness: 375mm
  
  

• Minimum Wall Thickness: 100mm
  
  

• Outer duct dimensions equals 204mm x 60mm
  
  

• Internal grille always in white with built in fly screen
  
  

• Plastic wedge provided to create slope to wall duct
  
  

• Instructions included