types of electric heaters
water heaters are cumulative and flow types.Cumulative operate as boilers - they are made and the capacity of a large amount (30 to 250 liters), which is gaining in water.This water gradually heated by PETN to a predetermined value and at a flow rate immediately replenished while the temperature is maintained constant.The flow heater has a small volume of the storage tank, the water is heated almost instantly due to the large electric power devices of this type.
The choice of the type of the heater depends on the needs of the family in hot water.In the case where always reside in the home and hot water needs all the time, it will be economically feasible to use electric accumulator.If
you want to establish a hot water supply in the country, where people come from time to time, be cheaper to install flow heater. Flow heaters - compact devices to set them in the shower or the bathroom will not need a lot of space.
How to choose a water-heater
main performance characteristics of this device, of course, is power, because of its resistances have cold water quickly heated to a comfortable temperature at least 35 ° C, water flow rate at the same time should be about 2-3 litersper minute.Minimum capacity for this type of heater shall be 3 kW, but if you expect a large number of simultaneous consumption of hot water, you should choose a heater capacity of 20-27 kW.
Flow heaters as well as storage, have the capacity to heat water, but its volume is low - a few liters.Naturally, attention should be paid to the material of which it is made, it must be resistant to high temperatures and chemicals contained in water.Longer will serve you a heater, the capacity of which is covered with a layer of enamel from the inside or the one which was used for its production of copper or propylene. The apartments and cottages electrical flow heaters installed only if existing cabling can support the work of such a powerful instrument.
In that case, when you want to use the heater for a long time, you should pay a little extra and buy one in which is protected from the formation of scale on the heating tenah and the inner surface of the container.In such models, as a rule, there is an indicator, which signals the need for replacing PETN.
In the case where you have to give summed gas communication, it makes sense to choose a gas flow heater, which under the existing tariffs for electricity will allow you to save considerably.