Split air conditioning systems consist of two units. The internal is installed indoors, and the external is mounted on the external wall of the building. Installation of the external unit is carried out using metal brackets. Strong supports hold equipment weighing from 36 to 150 kg. The outdoor unit houses a compressor and fan. During operation, the equipment vibrates and buzzes. Noise interferes not only with owners of HVAC equipment, but also with neighbors. The installation of vibration dampers for the outdoor unit of the air conditioner will help to eliminate it.
Causes of vibration
Noise level is one of the characteristics by which an air conditioner is selected. The indoor unit operates in the range of 26-36 dB. The outdoor module makes more noise - up to 56 dB. Moving parts such as a fan and compressor make a loud sound. Often a buzz is accompanied by vibration. An unpleasant situation arises for various reasons:
- unbalanced fan impeller;
- loose bolts on the brackets;
- mounting the unit on a weak surface;
- lack of vibration mounts for the air conditioner.
An increased level of vibration accompanies the work of not only budget, but also expensive models. If it is caused by defects in the installation of the outdoor unit, they can be corrected.
The noise level is affected by the correct choice of support elements (brackets), hardware. By installing anti-vibration pads under the legs of the equipment, get rid of the problem.
Types of products
Experienced installers know how important the installation of vibration isolation products is. They prevent the transmission of vibrations through the metal to the building envelope. By design, there are rubber and spring. The material for the manufacture of dampers is rubber, natural vulcanized rubber and other polymers. Two bolts or one stud used for fastening are poured into the elastic shock-absorbing element. Damper rubber has excellent vibration damping characteristics. Its structure contributes to the extinction of waves. The material is resistant to aging and wear, does not crack during operation. Among the advantages of the product:
- moisture resistance;
- operating temperature range from -40 ° C to + 70 ° C;
- withstands short-term exposure to acid and oil;
- height adjustment of the support is possible;
- universality - products are suitable for any split-system models, the main thing is to choose the right load.
Vibration mounts are made in various shapes: cylindrical, truncated cone, round.
In products of a different design, the main part is a steel spring. It smooths low-frequency vibrations. Polymer plates are rigidly attached to the end turns of the element. The spring can be placed between steel disks coated with thermoplastic. This design protects the internal mechanism from moisture and contamination.
When choosing an anti-vibration mount for an outdoor unit, you should consider several important factors:
- load - products are designed for a certain weight of the air conditioner;
- product material characteristics;
- vibration absorption capabilities.
Details differ in color, it depends on the inherent dynamic load.
High-quality vibration isolators for air conditioners are produced by the companies: Tecnosystemi, Soleco. Italian brands offer anti-vibration mounts with adjustable options, designed for high weight up to 150 kg per product. Soleco vibration isolators are made of galvanized steel and a practical elastomer. They are resistant to ultraviolet, weather, organic fats, provide electrical insulation.Parts have a hole for the M8 pin, the color of the model indicates the permissible load.
Vibration pads between wall and brackets
The place of installation of the outdoor unit and the supporting elements of the fastening are subject to special strength requirements. They must withstand the weight of the module. If the building is panel, vibration from operating equipment can be transmitted to neighboring apartments. To avoid conflicts and the gradual destruction of the enclosing structure, isolation of the bracket stand from the wall surface will help. Between the two elements is placed vibration pad made of rubber.
Vibration mounts for the legs of the external air conditioning unit
Vibration dampers for outdoor units or silent blocks for paws are designed to dampen medium and high frequency vibrations. They are installed between the air conditioner and the metal stand. Together with a set of four vibration mounts there are 8 washers and nuts made of galvanized steel. Other fasteners can also reduce vibration. Vibration dampers are offered in the form of a rubber gasket with a hole for an M8 bolt.
Installing vibration mounts for an air conditioner is the easiest and most affordable way to avoid increased noise levels during the operation of HVAC equipment.
