MTM 15-35 GT (15-35 kW) multi-oil air heater

Each combustion process requires the supply of an appropriate amount of air. Heating devices with a closed combustion chamber are those whose combustion chamber structure is tight and does not allow the flame to escape outside the chamber. The air necessary for the proper combustion process is supplied by a fan located in the air part (as in our MTM 15-35 GT, MTM 52 and MTM 52R models) or in the combustion part (then the air is drawn through the generated vacuum). This solution ensures that a constant amount of air is supplied to the furnace, regardless of external conditions, such as weather (temperature, wind, humidity, atmospheric pressure) or geographical location, which affect the chimney draft and the amount of air supplied in open chambers. Variable chimney draft can disrupt the combustion process and may even cause the exhaust gases to return to the chamber.

In ovens with the so-called open combustion chamber, the air necessary for combustion is drawn from the room in which the stove is located (boiler room, workshop). To provide the right amount of air, it is necessary to aerate the room. Most often it is done through supply ventilation, supply grilles, leaks in the window or door joinery, or by leaving the windows open.

Some furnaces with a closed combustion chamber allow the intake of fresh air from the outside (in some situations, when connecting the external intake is difficult for technical reasons, it is possible to draw in air from another room with adequate ventilation).

This solution has a number of advantages:

• from the room where the stove is located, oxygen is not taken away - it is particularly important when there are people and / or animals in the room,
• allows you to reduce costs related to the implementation of supply ventilation,
• eliminates the cooling down process of rooms through the supply of cool air from the outside through ventilation grilles and left open windows - the air drawn from the outside, by means of an inlet installation, is directed directly to the combustion chamber and does not cool the room,
• greater efficiency of the device - the right amount of air supports the combustion process increasing the efficiency of the device, thus reducing fuel consumption (costs),
• security use - reduces the risk of reverse exhaust,
• can be used in rooms with increased dustiness (preparation rooms for paint shops, carpentry shops with exhaust hoods, rooms with negative pressure).