The bathroom in any apartment or private house is the very room that must be kept clean, as every owner knows. However, in practice this is not always possible. The reason lies in the high level of humidity - an inevitable companion of this room. To avoid the appearance of mold and other negative factors, it is worth considering how to put into practice a fan connection scheme with a timer. With such an air exchange system, the bathroom will fully meet the definition of a temple of cleanliness and freshness.
Need for ventilation
Many residential buildings have natural ventilation, but not everyone is fully aware of the importance of having it. As mentioned above, there is always an excess of moisture in the bathroom, which negatively affects the human body. However, the room itself suffers. And if the bathroom is also combined with a toilet, which is not uncommon in planningapartments in high-rise buildings, then unpleasant odors are added to this.
The natural ventilation system, which works due to the difference in temperature and pressure, does not always cope with its duties. Ultimately, this leads to the active reproduction of fungi, because high humidity is just an ideal habitat for them. This is also accompanied by an unpleasant odor that spreads throughout the rest of the apartment or private house.
Actually, the violation of air exchange in the bathroom is a significant reason for installing forced exhaust (the connection diagram of the exhaust fan with a timer will be given below). The reasons for the unsatisfactory operation of the ventilation system itself can be various factors:
- clogged duct;
- strong wind;
- swirls in the ventilation duct (again due to strong winds).
For this reason, the use of a forced air exchange system by turning on household fans has become relevant. As a rule, they are mounted in the places of the ventilation hood of the bathroom.
Analysis of natural ventilation
However, before proceeding with the creation of a forced ventilation system, it is worth analyzing the natural one. First you need to find the opening of the shaft and remove the decorative panel. Over the long years of operation of the building, usually no one looks in here due to the lack of need (according totenants). So, there you can find not only deposits of garbage and dust, but even cobwebs.
According to SNiP, the air exchange parameters in a standard bathroom should be 25 m3 per hour. Therefore, when designing it, it is difficult to do without a connection diagram for an exhaust fan with a timer. Of course, in the absence of special equipment, it is impossible to determine compliance with this standard. At the same time, you can use one folk way.
After the channel is put in order, it is worth bringing a lit match, candle or lighter to it. If the flame deviates towards the shaft, then the ventilation is functioning properly. And in this case, the decision to install a fan can be made for preventive purposes, or this measure can be abandoned for now.
If this technique is not enough for someone, you can use another one - using a sheet of paper. To do this, take a small piece and lean against the ventilation shaft:
- leaf is holding - all is well;
- leaf fell to the floor - conclusions in favor of installing a fan.
The wiring diagram for a timer fan in the bathroom will be brought to life in the best possible way if the room is provided with fresh air. As a rule, its circulation is achieved due to a small gap under the door. It is for this reason that the threshold is not set in this room.
Reason for installing a fan
The main sign,which indicates the need to install a fan in the ventilation duct - this is the appearance of condensate and, as a result, mold and mildew on various surfaces of the room. These pathogenic microorganisms can serve as a source of various kinds of infections that affect residents of an apartment or a private country house. In addition, the premises of an apartment or house can be filled with smells from neighbors from below or from above. It also suggests that natural ventilation is not working well.
The use of a timer hood fan connection scheme in the bathroom contributes to the improvement of the sanitary environment of this room. When the device is turned on, the air mass circulates, which leads to the disappearance of unpleasant odors. On metal surfaces (again, due to the high level of humidity), the appearance of new rust is suspended.
As for the reproduction of fungi, their growth also stops. In addition, damp deposits on tiles (and this material is present in the design of many bathrooms) and mirrors disappear.
There are different models of fans on sale, among which you can find modern devices that work silently. In addition, they have a rather attractive design and compact size.
Features of the right choice
When using a fan connection scheme with a timer in the bathroom and toilet, the choice of the device itself is of considerable importance. To do this, it is necessary first of all to pay attention to its mainSpecifications:
- performance;
- electrical safety;
- noise level.
The performance of the appliance is largely determined by the volume of the bathroom, including the number of people who use it. To calculate this parameter, you need to remember one formula, well known from the school bench: multiply three quantities together: length, width and height.
After that, the result obtained must be multiplied by the ventilation rate. According to SNiP, this figure for a family of three is 6, with more people - 8. The number in the end will be the very performance of the fan. In this case, it is better to choose a device with a value slightly larger than the calculations obtained.
In the connection diagram of a fan with a Vents timer, for example, the degree of electrical safety is no less important than performance, or even more. And since the device must work in a room with a high level of humidity, then this figure should vary from IPX3 to IPX5. This indicates that the case of the devices is reliably protected from splashes, moisture, including direct hit by a jet of water. It is not worth buying one of the options with a higher protection class for a bathroom in an apartment or a private house due to inexpediency. This is not an industrial premises.
There is only one condition regarding the noise level: the quieter the fan, the better. That is, you should choose those models in which the volume during operation is notmore than 30 dB. This is especially true if it is necessary to carry out ventilation at night.
Fan connection diagrams
How can you implement a fan connection scheme with an Era timer or any other manufacturer? It should be noted right away that such work is not necessarily entrusted to specialists, everything can be done independently. At the same time, installing the device itself is not a problem, and that's half the battle. The main thing is to apply pressure to it. And since we are looking at fans that are equipped with a timer, there are not many options:
- Connection through a switch - that is, parallel to the lighting.
- Direct connection to the junction box - fully automated system without human intervention.
It is worth noting that all these options are best implemented at the stage of repair or construction of a new facility. Then the wires will be securely hidden under the tiles or plaster. Otherwise, it presents certain difficulties.
Scheme for connecting a fan with a timer from a light bulb
Exhaust fans with a timer are more expensive than conventional counterparts without additional equipment. However, it is a good option for indoor bathroom use. In this case, the connection diagram implies the presence of a switch and looks like this. 4 wires are needed here:
- Pin L has a phase wire directly from the junction box.
- Contact Lt - also for summing up the phase, only through the light switch.
- Terminal N - corresponds to zero, a wire also goes directly to it from the junction box.
- PEN contact is the ground for connecting the corresponding conductor.
In other words, only the phase opens, as in the case of lighting.
With such a scheme for connecting a fan with a timer, the algorithm of operation is as follows. Turning on is carried out simultaneously with the lighting, and turning off occurs after a certain time after turning off the light (configurable on the device). That is, the fan will work even if the owner has already left the room. This is usually a period of 5 to 30 minutes, which is enough for flow ventilation.
But there are other models on sale that are equipped with a reverse mode. In other words, the fan motor will work only when the light is turned off, that is, the reverse of the first option. And then after the time set by the timer.
Connect directly to the junction box
Fans with a humidity or motion sensor allow you to make the air exchange in the bathroom fully automated (they are also equipped with a timer anyway). That is, the participation of the owner of the dwelling is not necessary at all. Even in a simple connection scheme, a fan with a timer and a humidity sensor should not be the cheapest one. In addition, you should pay attention to another point if the bathroom is separate:
- Devices with a humidity level sensor - for the bathroom.
- Motion sensing fans - for toilets.
The first will be activated automatically, as soon as the humidity level exceeds the set limits. Moreover, the hood will work until it reaches the normal parameters.
As for models with motion sensors, they are turned on when a person appears in the sensor coverage area. The fans will automatically turn off after the delay set on the timer.
And since the system is fully automated and works without human intervention, switches are not included in the scheme of its connection as unnecessary. To do this, the wires from the junction box (phase, zero, ground) go directly to the fan contacts.
Installation stage
With the scheme for connecting a fan with a timer to an electric line, everything is now more or less clear, now it's time to start installing it. However, an electrical cable must first be run to this place. For this, a strobe is made from the junction box.
Now it is already clear why such work is planned to be done during scheduled repairs or even at the construction stage. After that, you should connect the wires to the contacts on the fan (more on this has already been written above).
Before installing the fan, the decorative grille is removed from the shaft channel (if it was cleaned, it is already open). If the method of mounting on self-tapping screws was chosen, then you should drillholes for dowels, where they will then be screwed during the installation of the fan. The dowels themselves at this point should already be pre-inserted into the holes made.
If necessary (in the absence of the possibility of mounting on self-tapping screws), you can go the other way - put the body of the exhaust device on a special glue or sealant. At the final stage, the removed decorative panel returns to its place.
Timed fans are a good idea
We have already familiarized ourselves with the need for a forced ventilation system - it is enough to install an exhaust device. However, in comparison with conventional models, analogues with a watch device have much greater advantages. By implementing in practice the scheme for connecting a fan with a timer, you can bring ventilation to almost ideal.
First of all, we are talking about saving electrical energy. The fan, which is powered in parallel with the lighting, will turn on even when the owner just went into the bathroom to wash his hands or load dirty laundry into the washing machine. That is, the device starts working even if there is no need for air exchange.
The work of models with a timer is due to a long stay in the bathroom, and in this case, air circulation is indispensable. As a result, the fan functions, as they say, strictly on business.
No draft
Here lies another strong argument in favor of installing a fan with a timer. While taking a bath or showerthe person is not exposed to the draft. After all, the device will turn on after the owner leaves the room. As a result, the risk of catching a cold during water procedures is minimal, if not completely absent.
The very scheme of connecting a fan with a timer in the bathroom should not raise questions. The presence of additional ventilation after the process allows you to remove all the condensate from the walls. And the last argument: with models equipped with a timer, you can not worry about turning them on and off. Actually, the clock device itself takes on all the duties of turning the fan on and off. All that is needed is to set the required period of its operation once.
Conclusion
As we now understand, the arguments in favor of installing a fan in the bathroom are more than convincing. After all, hardly anyone wants to risk their he alth. Therefore, if natural ventilation does not cope with its direct duty, it is worth helping it with this. Actually, for this, several schemes for connecting a fan with a timer were described in this article.
This is not as hard to do as it might seem at first glance. As a result, dampness and, as a result, fungi and associated diseases can be avoided.
