Diathermic oil heater featuring a helical tube bundle with one or more turns and three effective flue passes. Suitable for both liquid and gaseous fuels.
15 sizes with heat outputs from 117 to 5814 kW and steam production, in combination with EVA series evaporator, from 166 to 8300 kg/h.
Standard design pressure 10 bar.g
300°C for mineral oils
350°C for synthetic oils
Temperature difference between oil inlet and outlet of around 40°C.
Upon request boilers can be developed with different temperature values and differences from those indicated above. Construction with two concentric rings inside a gas tight cylindrical sheet metal body. The first “ring” represents the furnace that the flame extends along; the second “ring” is the start of a three flue pass circuit that optimises use of the entire heat exchange surface, making it advantageous to use low NOx burners.
Tube bundle made from seamless carbon steel.
Access to the furnace is available through a burner door hinged to the boiler that can be opened from the right or the left; the door is lined on the inside with a suitably thick layer of refractory concrete and features a flame inspection opening and burner anchor plate.
The rear smokebox is bolted to the boiler, and lined on the inside with insulating concrete, and is fitted with cleanout door and attachment for the flue connection.
The boiler body is lined by a suitable layer of high density rock wool, protected by stainless steel plate (AISI 430); this reduces heat loss and improves overall efficiency.
CE mark in accordance with the following directives