Designing a wiring diagram for an air conditioning system • Recommendations from professionals

At this stage, you will need to form a clear plan, which is desirable to draw on paper (for convenience and visual presentation). The drawn diagram should contain information about connecting the climatic device to the network, about the location of the indoor unit in the room, about all the necessary connections (wires, tubes) and their length. It is also necessary to determine the type of placement of traces from copper tubes: in strobes or special boxes. Thus, a detailed diagram with exact dimensions will be obtained.

This step is the final one in preparation for the installation of the air conditioner (or split system). The following describes the recommendations and features of the work.

Location of the indoor unit and features of its installation

Everyone likes to be in a cozy room. The air conditioner should be not only a device for heating/cooling, but also complement the design of the room, harmoniously combined with the surrounding objects. Often, the indoor unit is located near doorways, above the bed or in the middle of the wall. The unit is fixed under the ceiling, since the warmest air is located there. Also an important point to be taken into account is the need for sufficient air space around the inner casing of the air conditioner and for the flow of cooled air. This is necessary to ensure proper circulation: if there is an obstruction in the way of the cooled flow (for example, a drywall partition), the temperature in the room will not be uniform.

Consider the basic rules for installing indoor units of air conditioning devices:

• The distance between the cooling unit and furniture, shelves and other obstacles must comply with the standards specified in the operating instructions (often the value of this indicator is three meters or more). Sometimes there is an arrangement of the air conditioner above the furniture (wardrobe) — this is wrong. Any obstacle (even curtains) will prevent the air flow from moving in the right direction.
• During operation, the climatic device emits condensate, which flows into the drainage system. For free flow, the drainage tube is mounted at an angle. If you ignore this fact — water will accumulate in the air conditioner pan and fungus (and other harmful organisms) will multiply — this will affect the life of the unit. Indoor units are mounted strictly horizontally.
• The indoor unit is fixed, stepping back from the ceiling 10-15 cm (this distance plays a technological role when connecting the refrigerant pipelines). Sometimes the ceiling structure consists of several tiers: in this case, the device is installed 10-15 cm from the lowest boundary.
• The direction of the cooled air mass is an important aspect that affects the health of people in the room. You should not mount the indoor unit of the system opposite the sleeping or workplace, otherwise colds are guaranteed.
• The distance between the indoor and outdoor units should be small, this will ensure more efficient operation of the device and save the cost of interconnect materials.
• Affects the choice of the location of the air conditioner and the weight of the unit itself and the design of the wall. The device needs systematic maintenance, so the possibility of free access is extremely important (without unnecessary difficulties).
• The cooling unit should be placed away from strong heat sources (i.e., it is not necessary to mount the air conditioner above the convector). Also, if devices with strong high-frequency electromagnetic oscillations (drill, machine tools, etc.) are used indoors, the installation should be done away from these interferences.

Connecting the air conditioner to the mains

Work inside the room involves the direct installation of the climate device and its connection to the power supply. If everything is quite simple and clear with installation, then connecting to the power grid is a more complicated task, requiring special knowledge. The power consumption kW of this device ranges from 1.5 to 2.5 (and higher). Therefore, the wiring must be designed for such a load. If this is not possible, a separate power cable should be run to the shield. An air conditioner, like a boiler, a microwave oven and an electric kettle, are energy-intensive appliances that must have an autonomous line. This will save you from malfunctions and emergency situations (fire, for example).

Situations in which the air conditioner can be plugged into a conventional outlet:

• If the device has a low power consumption;
• If this air conditioner is mobile;
• If other household appliances connected to the same line of sockets do not work simultaneously with the air conditioner;
• If the power grid has a high load capacity.

Old wiring, as a rule, is made of aluminum, has a small cross-sectional area and is significantly worn out. It is not recommended to use the air conditioner in this case, so as not to damage it. By adhering to the rules, you can avoid short circuits and equipment breakdowns.

To equip an autonomous power line for a domestic air conditioner, use only copper cables with a cross section of 3×2.5 or more, install a circuit breaker and perform grounding. Not only the indoor unit of the air conditioner needs electricity, but also the external one. This is realized with the help of an inter-block route, respectively, the cross-section of the cores of the inter-unit connection must correspond to an autonomous line.

Considering the above, take measurements and carry out the necessary calculations. The diagram should clearly show the placement of fasteners, the route of drains, cables and copper pipes. These routes can be routed together using the mounting box.

Now you can safely proceed to the implementation of the scheme-plan in life!