HELPFUL HINTS

Split-systems

These conditioners have got their names from an English word "split", which stands for "separate". Split-systems consist of two blocks - inside, situated in the premise and outside, moved off on the street. Due to such division conditioner is not attached to the window opening any more, as inside block of a spit-system can be located practically at any convenient place. As the nosiest unit - compressor- is moved out in the outside block, noise, produced by split-system is less than the same one in a window air conditioner. And, at last, the great advantage of split-system is a big chose of the types of inside blocks. They can be wall, floor, ceiling, columnar and built-in a false-floor - cassette and canal ones. In flats and small offices the wall-type split-systems are usually used. If a required power of a cooling is more than 7 kW, split-systems of other types are used: at the premises of difficult forms - cassette and canal, when the glass partitions - ceiling, in the restaurants halls and large halls - columnar. You should take into consideration that the majority of split-systems of cassette and canal types accept a mixture of fresh air form a street.

If several inside blocks are operating with one outside unit, such conditioner is called multi-split-system. If quantity of inside blocks is more than six, and maximal distance between blocks is 100meters, such systems are called multi-zonal (zonal-module) or VRF-systems. Multi-split-systems should be used when an aim is to condense several neighbor's premises, and if needed to create a comfort in the whole building or at the whole floor it is better to use VRF-systems. In order not to put your foot into it, while purchasing split-system you should take into consideration the following points:

1. If you make a repair, it is better to purchase and install conditioning system before the finishing works. In this case all service lines between blocks can be hide in a wall. Besides an installation of a split-system on a repair stage costs 1,3-1,5 cheaper that in a premise with already-done finishing work.
2. While selecting a conditioner one should know at least approximately what cooling capacity he/she needs in order to reduce all surplus of heat. This can be done starting from the fact that through 1 square meter of glazing in a premise about 0,45kV of heat is incoming, one person excretes about - 0,15kV and office equipment transfers in a thermal energy about 30 % of power consumption (one computer excretes 0,3 kW, laser printer - 0,4 kW, copying machine - 0,5 kW). While summing all heat matriculations, we select a conditioner, the cooling capacity of which is more than heat matriculation from lighting, from people in a premise and from office equipment. But at that for 10 square meters of a premise it should be not less than 1kV of cold, that is in correspondence with heat matriculations from a solar illumination and a candlelight when a ceiling height is not more than 3 meters.
3. You should take into consideration that to a price, mentioned in price list of a company you must add 10-12% for a components (fastening of outside unit, decorative boxes, copper tube, drainage pipe-line, cables) and 20-25 % for an installation. This figure is not so big, if you will take into consideration that in Europe and Japan the installation costs 50-70% from the cost of the equipment. Certainly, one can find a team of "moonlighters" and keep one hundred dollars, but this can turn out to be a great problem, as low-grade installation can "ruin" even the best equipment. Moreover one must remember that a warrantee is given not by a company-manufacturer, but this one which is installing a conditioner, and that is why in case of any breakage it will be difficult to seek something from the "moonlighters".
4. Think beforehand where you are going to install the outside block of a conditioner. Do not ask the riggers to install it on a naked wall of a 16 floor building. This will be not only difficult and more expensive but also will complicate the following service of the outside block, for which it will be useful to be cleaned periodically and to be protected from the falling icicles. It will feel itself much better at a balcony or in any other not-visible place.
5. Average conditioner is moving out the air from 1to 2 liters of water per hour, and that is why discuss with a seller where he/she is going to move out a drainage pipe-line beforehand. The best variant is to move out the moisture in a canalization, but if this is not possible you should move it out on the street. In this case it is necessary to take care of heating of a drainage pip-line. This will allow to use a conditioner when the temperature is below zero not being afraid of moisture output's freezing. In no case you must not agree with a discharge of a condensate "in a jar". This will not only spoil you interior, but also you will always find the puddles on a floor.
6. You should remember that high-quality conditioner can serve twice longer, and that is why , while selecting a split-system do not save money on a prestigiousness of a brand. The difference in a price between technique of a first class and mass goods is from 15 till 30 % and at that the prime cost may differ twice!