Bathroom fan: selection, installation and connection
Bathroom in an apartment or house. Always a “wet place”. Even if you do not arrange puddles on the floor. The water is cold and hot, steam, wet towels. Everything evaporates moisture. And it is also hot in the bathroom and a greenhouse effect is obtained.
Excess dampness and heat, ideally, should “go” into ventilation, but as you know, its effectiveness in city houses is far from the norm. Over, both in the old foundation and in new buildings. The reason is that ventilation is everywhere a natural type, that is, without an additional hood.
It is in America on high.Rise buildings that there are huge fans, and our air is removed by the very difference due to the difference in pressure and temperature. As a result, it moves medium, or even barely barely, if old at home, and the channels clogged.
And our “wet place”, the bathroom, slowly acquires all my little.Remote flora and fauna in the form of fungus, mold and even mokrits. To get rid of such a neighborhood or stop it in advance, you need to put an exhaust fan in the bathroom. He will pull all dampness where should be, and attack in the form of an insufficient settlers will happily pass you.
How to choose a bathroom fan
I made a bathroom fan according to the following criteria.
According to SNiP 31-01-2003 “Buildings Residential apartment buildings”, table 9.One., The value of air exchange in the bathroom should be at least 25 (cubic meter.M/h), t.E. In one hour, at least 25 should be eliminated from the bathroom (cube.M) air. Accordingly, the fan must be chosen with performance of more than this value, and besides with some margin, it will definitely not be worse, because the norms given in the SNiP are minimal.
The second criterion for choosing a fan is noise.
For a long time everyone has known that an increased noise level for a long time causes a harmful effect on a person.
Our ear perceives sounds with a frequency in the range from 20 (Hz) to 20,000 (Hz). To measure the noise level, the range from 45 (Hz) to 11000 (Hz), t is of the greatest interest.E. Noise assessment is made by a special device with a noise meter at 8 average frequencies: 63, 125, 250, 500, 1000, 2000, 4000 and 8000 (Hz). So, in the rules of SanPiN 2.One.2.2645-10 “Sanitary and epidemiological requirements for living conditions in residential buildings and premises”, p.6.One., Appendix 3, there are requirements for noise levels from external sources, which are an exhaust fan.
It turns out that the noise level from the working fan in the daytime (from 7-00 to 23-00) should be within 23-58 (DB) and at night (from 23-00 to 7-00) within 13- 50 (dB) at average frequencies 63, 125, 250, 500, 1000, 2000, 4000 and 8000 (Hz).
From experience, I can say that all fans having a noise level up to 35-40 (DB) are quite acceptable for installation and do not create any discomfort.
The design of the fan is directly related to the place of its installation and the size of ventilation mines.
The ventilation shaft channel takes place in the corner of the bathroom. I have already sheathed the walls with a moisture.Resistant drywall, and the passage hole in the shaft (outlet) was cut out in the wall with a diameter of a little more than 100 (mm).
Accordingly, I will need an overhead wall fan with a flange diameter of not more than 100 (mm).
According to execution, fans are divided into: axial, centrifugal, radiator, channel, roof, etc.D. I will not go into details of their differences and application, you can read about this on other specialized sites.
I stopped my choice on the axial fan, t.To. They are easy to install, have good performance and acceptable cost.
In my article about installing sockets in the bathroom, I talked in detail about the zones that this room is divided into. I recommend that you go to the specified link and read more details in detail.
For my bathroom, the case of a shower with a pallet is applicable, but without a stationary partition.
I will explain that a bath will be installed in the corner, and on the wall. A watering can of the tropical shower. A sink will be installed a little further.
The fan will be located on the opposite wall at a distance of 1.5 (m) from the edge of the bath and 0.75 (m) from the edge of the sink, so the third zone is applicable to it. In this regard, the degree of protection of the fan housing should not be lower than IPX1, and even better IPX4.
Modern fans are equipped with many useful, and sometimes useless, automation functions, for example, the presence of a built.In electronic timer, a moisture sensor, a motion sensor, a phototimeter, and the possibility of remote control.
Initially, I planned to purchase the simplest fan, but thinking about convenience, comfort and savings, I decided that the fan control would be carried out through the timer, and therefore began to look closely at models with electronic timers.
There are many models with various characteristics, design and price ranges on the market. Here are the most common models: Silent (more silent), Electrolux Eaf, Decor.
As a result, I stopped my choice on an axial era 4s 4s et healing fan from the Russian manufacturer Era (in the oldest “Ecenent”).
, which, in principle, was the advantage when choosing it, t.E. At a completely acceptable and affordable price (not advertising), I received the performance I need, and even with the additional functions I need.
Norms and requirements
In principle, the main requirement for the bathroom is the air exchange in it equal to 25 m³/hour. This is not depending on what size it is. And if in other office rooms (except toilet and kitchen), the frequency of the exchange of air mass is taken, then the standard value is required here. It is under it that they equip ventilation in the bathroom.
It is important to adhere to one strictly requirement. The volume of supply air should be as much or more than an iconic.
Installation of the fan
This type of fan is quite easy to install. It connects to the network using a terminal block, which is behind the fan bars. To install the fan, you can use fasteners that come with it. Also, you can resort to the help of glue, in case of possible damage to the tile in the bathroom.
When installing the cooler in the bathroom, remember the marking of wires using different colors. Zero is indicated in blue, the phase will correspond to other colors, for example, red, black or white.
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Installation and connection
The installation of the fan in the bathroom can be done with your own hands. But this is if there is the necessary knowledge regarding the installation of electrical wiring and household appliances. In all other cases, it is better to use the services of a professional. The cost of installing a fan in the bathroom will be small compared to the price of the device.
And now the main thing: how to install a fan in the bathroom and connect
First of all, it is necessary to provide the ability to connect the device to the electric network. There are several options here. You can stretch the wire from the camshaft on the site, “be burned” from the switch or from the light device itself. In the last two cases, air vents will turn on and turn off simultaneously with the turning on the lighting in the bathroom. This is not entirely convenient. It is better to install a separate switch.
Before carrying out installation work related to electricity, it is necessary to disable power in the apartment. After the electric wire is carried out from the switch to the ventilation grill, you can start working with it.
The grate has a width of 10 cm. If the device pipe is 100 mm, then no problems will arise. If it is larger (125 or 150), then you will have to expand the hole to the corresponding size. There are nuances again here. The pipe is a flexible, soft pipe made of plastic. When installing, it can easily deform and disrupt the operation of the device. Therefore, it is better to insert a segment of a metal pipe.
To accurately determine the diameter of the hole under the fan, lean it with a nozzle against the wall, with a pencil, outline the circle. In order to securely fix the pipe in the pipe, two rubber rings with an interference are put on it. In addition to fixation, these rings are extinguished by the vibration of the device, reduce the noise level. You can simply fix the device with mounting foam, but in this case it will be difficult to then dismantle it for prevention or repair.
An important point. The distance from the ceiling to the ventilation grill should be at least half a meter for normal air circulation.
After the device has been brought into the pipe, the points for dowels or self.Tapping screws are noted with a pencil. The holes in the tiles are performed using a drill and the so.Called “feather”. Then reliably fix the fan on the wall. It is also important not to overdo it with the tightening of dowels, since the plastic case may not withstand much effort. The device can be set in level, or you can navigate along the line of tiles.
To connect an electric cable, you can use the standard hole, or you can make an additional in the housing. The wires are connected in a terminal block, especially for this designed to avoid sparking in wet air.
After the installation work in the bathroom, they include power and check the operation of the device and its sensors. He must work quietly, evenly, without sparking, without vibrating.
In order for the device to work not 1 year and copes with its direct task, you still need to choose the right model depending on the area of the bathroom. It is not difficult to install a fan yourself. But, if there are no basic knowledge regarding such work, it is better not to take risks, but to trust a qualified electrician.
Have you ever installed such a device in the bathroom? How did everything go? Write in the Комментарии и мнения владельцев. Share the article on social networks and save it in bookmarks so as not to lose.
In the video you can watch the simplest and fastest way to install an exhaust fan in the bathroom and toilet.
The foreman and the organizer of absolutely all processes related to repair work. I have been repairing for more than 20 years and I am an expert in this area. When writing an article, he tried to make it as useful and understandable to every person.
Connection of wires in a camshaft
The connection of wires in a camshaft is the most crucial moment that requires actions with increased attention. There are several options for switching wires in a camshaft depending on the types of switches and fans used.
The main circuits of connecting the fan to the switch are as follows:
- When the hood is turned on simultaneously with the lighting;
- When using a separate circuit breaker for extract;
- When using a two.Key switch;
- When using hoods with a timer.
To turn on the fan in the bathroom, along with the lighting, it is necessary to connect the zero wire of the fan to the zero wire of the network in the distribution box, and the phase wire of the fan should be connected to the phase wire going from the switch to the lighting device.
When using a separate circuit breaker to turn on the fan, you need to make the following wire switches:
- The zero wire of the ventilation device must be connected to the zero wire of the network.
- The phase wire of the hood is connected to the phase wire coming from the switch.
- You need to connect the phase wire of the network to the input terminal of the circuit breaker.
If a two.Position switch is used as a switching device, the following actions must be performed:
- The zero wire coming from the ventilation device must be attached to the zero nourishing conductor.
- The phase wire coming from the hood must be attached to the phase conductor, which goes with one of the two output circuit breaker terminals.
- The phase wire of the network must be connected to the input terminal of a two.Clavy switch.
- The second output terminal is used to connect the bathroom lighting device.
When using a fan with a timer, the switch switch is performed in conjunction with the wires of the bathroom lighting. Procedure:
- The zero wire of the network must be connected to the zero veins of the fan and the lighting device.
- The phase wire of the network is connected to the input terminal of the circuit breaker and to the phase core of the fan.
- The wire coming from the output terminal of the circuit breaker must be connected along with the phase wire of the lighting device and with the signal wire of the hood.
The phase feed wire must be protected by a circuit breaker, which, in case of emergency, must reliably de.Energize the entire power supply circuit. The cable section is calculated based on the load used. After completing all the work, you need to check the operation of each device in the bathroom.
To establish compulsory ventilation, the bulk of the time is spent on preparatory work. The time spent and money for the installation of such a system will more than pay off the health of people living in the apartment.
Do.It.Yourself installation instructions
It is not necessary to call a specialist at all, you can mount the device yourself.
First you need to choose the right model of the unit. Then the cable is laid and is brought to the design. Its dimensions must correspond to the size of the ventilation duct. The device should enter it tightly.
Necessary tools and materials
It will be useful to install a decorative box for wiring.
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Methods of connection
There are three ways to optimize the operation of the exhaust fan:
- The device and lighting are turned on at the same time. The pluses include simplicity and affordable cost. The disadvantage is that you have to leave the light on until the moisture disappears.
- Direct connection. The electrical appliance operates if necessary.
- Built.In circuit breaker. Turning on/off by means of the cord.
- Exhaust fan with a timer. The engine starts at a certain time.
Connection scheme and connection of wires in a distribution station
Connection scheme and connection of wires in a distribution station
You can directly connect the device from an existing lamp.
Connecting through a single.Valve switch
Several electrical appliances are connected in parallel or the power supply is used. Since metal elements are often used in these devices, grounding is necessary, especially in wet conditions.
Connection via a two.Key switch
The connection is based on the two contacts of the circuit breaker, where different phase wires depart. Options do not depend on one another.
Electrical connection diagram of the fan from a two.Key switch
Fan connection diagram from a two.Clavy switch
Built.In switch fan
The built.In switch allows you to not use the external switch or other switching systems. Often it is performed in the form of a cord, which is quite convenient when using.
Joint connection of the fan and lighting through a single.Clad switch
A good option when connecting is a connection of a ventilation structure and light using a single.Voiced switch. Of course, you have to turn on the system even if you visit the bathroom short.Term. But fan models with an electronic timer are produced. The modes switch in such designs are three pins, two of which are closed with a jumper, so 2 operating modes are obtained.
Classification of exhaust systems
Fans in their constructive features can be:
Axial. The air flow is pumped up with fan blades. The pressure that he creates no more than 50 PA. Usually mounted in a non.Channel ventilation system.
Diametric bathroom fan
Bathroom centrifugal fan
Many modern fans are equipped with additional functions
- Electric fans with a built.In motion sensor can recognize the human body in a radius of their “visibility” and turn on the engine. Such a system allows you to significantly save electricity.
- A fan with a timer is able to recognize a moving person and turn on the engine to start work. If the movement stops within its radius of its action, the device is disconnected.
- A fan with a temperature controller (humidity) depending on its design features removes hot air from the bathroom or vice versa, heats it. For the installation of such a device, a special scheme is provided that allows you to configure the optimum air temperature in the room. If the established norm is exceeded, the device engine begins to work, creating the necessary air exchange in the bathroom and preventing people.
- A check valve device is necessary to prevent the reverse air flow, as well as extraneous smells from the outside, when it does not work.
- The fan with the blinds is also designed to prevent air flow from the street during the shutdown of the device. Only in this case the blinds opens and closed manually.
The cost of installing ventilation systems
For installation of ventilation, for installing ventilation grilles and in the estimate on the channel fan are usually used on the basis of the construction part of the FER and the GESS. The aforementioned code has number 20 in both codes. In the next text, we will consider in more detail the use of for the installation of ventilation grilles, for dismantling ventilation grilles, for installing fans and some other types of for ventilation work.
As mentioned above, the for ventilation are included in the set of the 20 construction part of the collections of the FER or the GESN. Therefore, the majority of for the installation of ventilation should be sought in this set. Figure 1 shows the composition of the FER 20 batch for ventilation work.
As can be seen from the schedule of in Figure 1, the price in the estimate for the installation of the canal fan and the rates for the roof fan can be selected from tables in section 2 called “fans”. In general, in this section there are only 4 types of tables for installing various types of fans.
In addition to installing fans, the volume of work in the Fer20-03-001 table also includes alignment and testing of the installed fans. The volume of work in all Fer20-03-001 is measured in units.
The standards given in the Fer20-03-003 table, as can be seen from Figure 2, can be used as a price in the estimate on the roof fan. Figure 2 also shows the composition of work according to one of the standards. It should be noted that the algorithm of work for each of the norms is identical. The difference, as in previous tables, lies in the weight of the installed equipment. Please note that the Fer20-03-003 table contains four norms, each of which can be used depending on the weight of the installed equipment in the estimate of expenses in form 4, local estimates, the CS: GO-2 or another form of cost estimates. The volume of work is also measured in units.
The rate in the estimate of the fan can also be Fer20-03-004-01 for installing a dust quilting. The work includes the installation of equipment and its test, and the unit of measurement is the same as in other standards of section 03 of the collection 20.