Such tankless water heaters are arranged quite easily. Their main elements are the heat exchanger, consisting of a reinforced tank with its heaters and a control unit and management. Electric water heaters are equipped with some firms Circulator pump, expansion tank, safety valve and filter. It is important to note that low-power electric water heaters are single phase (220 V) and three-phase (380 V). water heaters over 12 kW three-phase normally. The vast majority of electric water heaters rated at more than 6 kW produced multi-stage, which allows efficient use of electricity and does not include the water heater at full capacity during the transition periods in spring and autumn.
The most famous in Seattle gas water heaters – Takagi Inc. Electric water heaters Takagi thanks to an automated control system can maintain the temperature of air in the room to +30 ° C up to +0,5 ° C In this case the temperature sensor or the programmer can be removed from the water heater to a distance of 10 meters to step adjustment power under a uniform load on each phase, control the Taco Circulator pump to increase the efficiency of heating systems; evaluate the performance of the water heater in operation with
external display. The water heaters of the plant well proven in operation, have awards in many exhibitions. Electric water heaters are manufactured output 3-100 kW.
Models with capacity from 3 to 5 kW – Single-phase, more powerful water heaters – three phase.
water heaters, “Evan” series EPO produced four classes: “Standard-Economy”, “Standard”, “Comfort”, “Professional” and can be used in systems with natural or forced Circulator of coolant. As a carrier can use distilled water or any non-freezing liquid, certified according to the norms SanPiN. Relay control scheme makes water heaters less sensitive to voltage drop and more reliable in operation. Due to the continuous adjustment of the coolant temperature furnaces are used even in the system “warm floor”. They can be installed directly in the living room through a combination of contemporary design located in one housing the control panel and by the device. water heaters are three stages of power for optimum use of electrical energy.
Czech firm Dakon produces a very wide range of electric water heaters with capacity from 4 to 60 kW. Standard features include all electric water heaters multi German pump Wilo. Each water heater of this company is equipped with a pressure sensor water, there is a modification with integrated expansion vessel, safety valve and filter.
water heaters up to 12 kW are available single and three phase. Electric water heaters manufactured by Eleko Elbeva (Slovakia). The range of water heaters of this manufacturer has 9 versions capacity from 6 to 45 kW. The water heater is rated at 6 kW – Single phase, the model outputs from 8 to 45 kW – Three-phase. All water heaters
this company has a three regulation.
Tankless water heater Eleko 6 has a built-pump. Automatic water heaters controlled voltage of 24 V. Another Slovak producer – Protherm produces 19 types of electric water heaters and power of 9-24 kW. All electric water heaters of the company (except for the series “B”) equipped with three-speed Circulator pump. There are five different designs: a series of “S” – standard version, a series of “K” has all the technical parameters of a series of “S”, as well as the contactor to provide thermal protection, Series A similar series of “S”, but not for the progressive integration of power and the pump, a series of “D” allows you to connect multiple water heaters in the cascade, in-room controlled by one regulator, Series “B” – a simplified system for water heaters with natural Circulator.
Quality Bosch electric water heaters in accordance with established notions of goods produced in Germany, but their price is several times higher than the price of analogues produced in Eastern Europe. water heater Bosch GWR 5 / 15 works as a single-phase (10 kW) and from the three-phase power source. All Bosch brand electric water heaters are equipped with a Circulator pump and expansion tank, which makes their installation more simple and cheap. The range of electric water heaters Wespe Heizung consists of 10 modifications of the capacity from 4 to 24 kW. All models have three stages. Standard features include weekly programming. The size of the water heater of any capacity of 660 × 380 × 175 mm, weight 16 kg. In this case the water heater installed in almost all the elements necessary for its normal operation (with the exception of the expansion tank).
Electric water heaters have a number of advantages:
• low cost;
• ease of installation;
• lightweight and compact (can hang on the Takagi),
as a consequence – to save space;
• Safety (no open flame);
• Ease of operation;
• do not require a separate room (water heater);
• does not require installation of a chimney;
• do not require special care;
• eco-friendly (there are no harmful emissions and foreign odors).
When using electric water heaters the most pressing is the rational use of energy. Significant energy savings can be obtained by installing remote programmer, which support the room temperature to a predetermined schedule.