They are used for the preparation of technological or sanitary water. They are used in industrial plants, residential buildings, hospitals, sports centers... These water heaters are made as vertical (standing) and horizontal (lying) with all the necessary connections for normal operation.

Water is heated with hot water from the heating system or steam through a tubular exchanger. Alternative water heating is done by a set of electric heaters mounted on a flange inspection opening. They are made of stainless (steel) steel or steel sheet of quality Č.0361, while in that case anti-corrosion paint is applied on the outside as protection, and the internal surfaces are protected with epoxy resins.

Water heaters are made at the request of the customer and based on following data:

• Connection layout,
• Boiler volume,
• Operating pressure in the water heater and tubular exchanger,
• Heating fluid temperature,
• Temperature of water heating,
• Warm-up time,
• Electric heater power.