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How much will air conditioning affect my costs? It is unavoidable with the introduction of new power supply appliances that costs will increase. In any case, correct dimensioning of the system affects your costs depending on the energy demand. For instance, a different mode for day and night, or the air conditioning being on just in places where needed causes lower costs than global usage of the product (if a part of the room is privileged, the unit will be less charged and will require less energy). The units of the HomeTech line are characterized by lower consumption and high performance, as specified in the chapter on energy performance. [ back to faq ] Is the system set up in the right way? The planning and installation of an air conditioning system are determined from many points of view. The evaluation of the product's performance is essential: it must provide high performance, low energy consumption, low noise both inside and outside the installation area; moreover, the correct planning provides optimal positioning of the appliances, giving priority to an homogeneous air spreading in all areas. A good system is judged not only from an aesthetic point of view, from the complete integration of the system into the room, but also for its time efficiency, its performance duration, the quantity of extraordinary maintenance interventions and for it's a ease where usage and adjustment are related. [ back to faq ] Do appliances need maintenance? Units will have a long life and efficiency if there is constant product attention from the user, maintenance in any case is unnecessary if there are no problems concerning loss of cooling gases or the accidental breakage of the cooling unit. It is advisable to carefully read the care and cleansing instructions described in the installation and maintenance book. [ back to faq ] What's the difference between the exchange coils pipe and the one used for connections? There are two kinds of copper pipes for cooling and conditioning systems: the ones used inside thermal exchange coils and the ones used to connect the device to the compressor. The first kind has to have the features indicated in EN 12735-2 while the second one is indicated in EN 12375-1. Both of them have the same chemical composition (called Cu-DHP); but, apart from this, there are many important differences. Pipes for coils are basically provided in an annealed condition and can have a much smaller thickness (provided they begin from 0,28 mm, differently from the minimum 0,80mm for connections). Moreover they need to have stricter dimensional tolerances, both for thickness and external diameter. The ones for connections have a bigger quantity of external diameters, but are less thick; they are also provided in a tough and semi-tough way. [ back to faq ] Can I use a pipe for sanitary water conditioning systems? No. The pipe for sanitary water and gas systems is defined by UNI EN 1057, while the one to connect the cooling and conditioning devices is defined by EN 12735-1. In addition to the fact that the dimensional features rarely ever match, (thickness, diameter and tolerances), the law about conditioning establishes that the pipe is plugged at the ends; this is in the UNI EN 1057. Moreover, different tests are necessary in order to verify the mechanical and chemical conformity of the pipe. The internal cleansing required by laws is even different: the UNI EN 1057 establishes that the pipe has a carbon residue lower than 0,20 mg/dm2, while the EN 12735-1 cares about general residues (for example powders) which don't have to be over 38 mg/m2. In other words: in the sanitary water field it is necessary to check the level of carbon residues, while in conditioning pipes the powder content can provoke damages such as compressor seizures or the lamination valves stopping. [ back to faq ] What's an air conditioner? And how does it work? An air conditioner works according to thermodynamics principles and properties of an appropriate cooling gas. The R134A cooling gas, used in all HomeTech line units, is the most useful and efficient one nowadays available on market: it is not toxic nor inflammable. The gas is the fluid that is used to take heat from one space and bring it to an external space. When pressed, the gasses warm up and, once cooled, become liquid. In the unit, the gas is pressed by a scroll compressor and in going through an exchanger, releases heat to the external space. Then going through a thermostatic expansion valve it spreads chilled air. Going through an exchanger, the cool gas takes away heat from the atmosphere, warming up. This is the basic functioning (cooling cycle) of each air conditioner; in order to transform all this into wellness it is necessary that the product is well sized for the space in which it must work. [ back to faq ] What's an ON/OFF air conditioner? And how does it work? An on/off air conditioner works by alternating functioning periods to stand by periods. For instance, the device turns on when the temperature inside an air-conditioned place goes over the differential from the set temperature, then it turns off when the temperature goes down the one set, reaching the differential one; the device basically “turns on and off” acting exactly as a home refrigerator. The Air Energy and Geo Energy work with an on/off logic since little power advantages of inverter technology are not so important. [ back to faq ] What's a Heating Pump air-conditioner? How does it work? Air Energy and Geo Energy are heating pumps, meaning the units can cool and even warm up a space. In order to warm up a place there is an inversion of the cooling cycle in the product: it's such as the air-conditioner tries to cool the outside space, the heat produced in this step is then released inside and the room warms up. Moreover our units grant the output of hot sanitary water throughout the year. [ back to faq ] What's the energy class of an air-conditioner? The energy consumption Class, also called energy efficiency Class is a partition of household electrical appliances consumption scale ruled by the European Union. It indicates the ratio between the energy used and the energy produced by an air-conditioner through letters from A to G, where class A stands for the appliance, energy production being equal, it has a very low functioning consumption, while G stands for high consumption. This means that a class A air conditioner has a better performance than one belonging to an inferior class, which means it is more efficient. The reduction of consumption is possible thanks to new technologies aimed at optimizing the cooling unit function, at the same time obtaining high performance and conservation. The air conditioner energy efficiency classes are defined according to the 2002/31/CE European guidelines according to EER (in cooling mode) and to COP (in warming mode) of the air conditioner. The double wording class A is used to define air conditioners with heating pumps which are in class A both in the cooling mode (EER) and in the warming one (COP). All HomeTech units are in class A in winter mode. [ back to faq ] The efficiency of an air conditioner in cool mode is measured by the electrical efficiency ratio "EER" (Energy Efficiency Ratio). EER is the ratio between the energy provided and the electric energy used; the higher it is, the more efficient the air conditioner will be (low consumption). For instance, A EER value equal to three means that for each electrical energy kW used, the air conditioner will produce 3kW of thermal energy (heat taken away from the space to be cooled). EER and COP values are indicated in the chapter about energy performance. [ back to faq ] The efficiency of a heating pump is measured by a “COP” performance coefficient (Coefficient of Performance) given by the ratio between the energy produced (heat released to the space to be warmed up) and the electric energy used; the higher is COP, the more efficient the device is(low consumption). For instance, a COP value equal to three means that for each kW of electric energy used, the heating pump will produce 3kW of geothermal energy, given to the space to be warmed up. One of these is provided by the electrical energy used and the other two kWh taken by the outside space. [ back to faq ] When is it necessary to recharge the gas in the circuit? Never. The gas mills around in a closed circuit. Therefore, if there are no losses, the system won't ever discharge. [ back to faq ] Which are the units of measurement used in this field to indicate the cooling or thermal power? BTU/h -> British Termal Unit, unit of measurement of the thermal power of Anglo-Saxon origin; W -> Watt (refrigerators or heaters), unit of measurement of the system power in the SI system (International system of units of measurement); frig/h (e kcal/h) -> refrigerating units (and kilocalories), heat unit of measurement belonging to the practical system, a refrigerating unit is equivalent to a kilocalorie and indicates the heat taken by a body; as rule a negative mark is given to the refrigerating unit: 1 refrigerating unit = - 1 kcal; 1Watt = 3,413BTU = 0,860 Kcal/h. [ back to faq ] What do DC, PAM, PWM abbreviations in some inverters mean? DC -> completely direct-current air conditioner, the internal unit result to be quieter and more efficient; PAM ->(Pulse Amplitude Modulation) pulse amplitude modulation, mode which quickly assures the necessary power so as to rapidly reach the set temperature; PWM ->(Pulse Width Modulation) pulse width modulation, mode which intervenes after PAM and keeps the set temperature making the compressor work at the minimum possible speed in a continuous way. [ back to faq ] Which damages does the water toughness provoke? The most common consequences connected to a scarce organoleptic water quality are the following ones:
[ back to faq ] There are many ways to soften water that can be used according to the water starting and final features it must have to satisfy the user needs. [ back to faq ] |
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