The Content Of The Article:

Some rooms - kitchen, toilet, laundry... - require forced ventilation, whether to overcome odors, fight moisture or renew the ambient air. An aerator responds to the request. Timed, its action continues even after closing the light switch to which it is connected.

Install a timed aerator

Practical advice

Before drilling the wall, make sure that no water, gas or electricity is in the way or too close.
● To drill, use a long Ø 12 mm concrete drill bit) and make a series of close holes in the path. Finish with flat chisel and mallet.

Choose an aerator

The choice of the aerator depends mainly on three factors: the installation possibilities, the flow and the control device. The installation is carried out through a wall or ceiling. Depending on the location, you will need to consider a short or long vent.
● Flow rate refers to the number of cubic meters of air renewed per hour of operation (Nr / h). It is defined according to the volume of the room (flow = volume x Nr / h). The coefficients indicated by the manufacturer are: 10 to 15 Nr / h for the laundry room, 8 to 12 for the toilets, 6 to 10 for the kitchen, 6 to 9 for the bathroom.
● The unit is switched on when the room lighting is activated: via a corded switch, a timer or a hygrostat that operates from a certain hygrometric threshold (humid rooms).

The choice of model

The room to be equipped is a toilet of about 4 m3, the flow must be between 32 m3 / h (4 x 8) and 48 m3 / h (4 x 12). But in reality, aerators with a flow rate below 80/100 m3 / h are rarely found on the market. We fell back on a model of 100 m3 / h, which is only more effective.
● Our aerator is wall mounted, with a duct outlet with a minimum diameter of 100 mm, and with adjustable time control. In this version, it starts running a few seconds after the lighting of the lamp: it continues to work after having cut it according to the preset time (here, about five minutes).

The installation

Determine the most suitable location and draw a circle slightly larger than the outlet diameter of the aerator. After digging the masonry, cut a cuff into Ø 125 mm PVC pipe, 3 cm longer than the wall penetration. Place it in the hole making it arrive at the edge of the wall side room, and seal with plaster.
● Unscrew the two front screws of the aerator and remove the grille to access the electronic module: using a potentiometer, you can set the delay time from one to twenty minutes. Place the device in the cuff and fix it to the wall by pegging and screwing (screws Ø 4 x 25 mm).
● On the other side of the wall (here an attic), plaster seal the base of the cuff. Its 3 cm protrusion makes it possible to insert a flexible aluminum sheath of the desired diameter. Hold it in position using a clamp (eg Serflex) and orient it towards the exit (here, on the roof).

Electrical wiring

The device is connected to the lighting circuit of the room. Its "domino" connection has three terminal terminals marked: T (Timer), L (Phase or Line) and N (Neutral or Neutral). Connect the L terminal to the corresponding "switch" input phase, the output T terminal and the N to the mains neutral. A recessed sleeve connects the conductors to the switch and the light lamp. After connection, reassemble the protective grille and test the operation.

Draw the hole

Draw the hole

The aerator takes place at the top of a wall perpendicular to the access door. A PVC pipe drop Ø 125 mm is used to trace the hole allowing the passage of the cuff.

Hollow out

Hollow out

Unless you have a large drill bit, the most accessible method for the do-it-yourselfer is to drill holes in the inside of the path and then cut out the center part of the chisel.

Introduce the cuff

Introduce the cuff

Insert the cuff by placing its inlet flush with the inside wall. Therefore, it will exceed 3 cm outside which is sufficient to connect the exhaust duct.

Set the timer

Set the timer

The timer can be adjusted before or after the appliance is installed. To do this, simply remove the grid and act with a screwdriver on a potentiometer of the electronic circuit.

Thread and screw the base

Thread and screw the base

Insert and screw the base of the aerator first. To its right, there is the recessed sheath of the electrical circuit connecting it to the switch and the lamp. The filling will be done with plaster.

Adjust the evacuation duct

Adjust the evacuation duct

Before assembly, accommodate the shape of the exhaust duct on a PVC chute. Its end fits easily to the shears but can also be slightly flared to introduce it on the cuff.

Seal the cuff

Seal the cuff

On the outside, seal the sleeve before inserting the sleeve. Hold it in place with a hose clamp and orient it towards the outlet (here, a roof tile).

Connect the wires

Connect the wires

The aerator is controlled from the switch of the light lamp. Connect the wires as shown in the wiring diagram and perform tests.


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