Observing the Volcano World pp Cite as. Volcanic gases are insidious and often overlooked hazards. The effects of volcanic gases on life may be direct, such as asphyxiation, respiratory diseases and skin burns; or indirect, e. Although accounting for fewer fatalities overall than some other forms of volcanic hazards, history has shown that volcanic gases are implicated frequently in small-scale fatal events in diverse volcanic and geothermal regions. In order to mitigate risks due to volcanic gases, we must identify the challenges.
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The device made with attention to detail, from high quality materials, guarantees user satisfaction for many years. The well-designed structure of the housing allows for optimal exposure of the exchanger surface while concealing the structural elements. The diffuser directs the air to the entire surface of the heat exchanger, maximizing its potential. The option of individual positioning of blades allows you to direct the movement of heated air.
The microprocessor control panel allows for smooth adjustment of the rotational speed and programming of the device's operation schedule. The maximum vertical range of the devices ranges from m depending on the type of heater. The maximum horizontal range is from m. Step one: determine the temperature inside the target room and its heat demand for heating purposes.
Air heating is one of the most dynamic methods of heating rooms, allowing for the application of temporary e. This allows for significant reductions in heat consumption, but does not require any heating power surpluses to be added to the devices for quick heating. Step two: determine the location for the heaters and the necessary air stream range to ensure the achievement of suitable temperatures in the areas of the room you are interested in.
Notice that the air speed should not exceed the permissible values in human occupancy zones or on any other sensitive areas, e. Step three: obtain information on the temperature of the heating medium available in the building. Step four: Once you have all the above data, take the VOLCANO catalogue and look for devices which fulfill the criteria of the required air stream and required heating power, considering the possibility of work at varying outputs first, second or third speed. Use the charts presenting air speeds in the distance function to determine the range for each device size.
Determine the heating power for each device speed and for various heating medium temperatures using the tables on pages In the unit equipped with AC motor it is performed by switching of the given winding leads with use of a simple control panel equipped with relay outputs and there is no need to use any voltage regulator. In the unit equipped with EC motor the fan speed regulation is performed by V signal.
It is due to a compromise between the investment costs connected with the used pipes diameters, and maintenance costs, connected with water flow resistance. We suggest the following minimum pipeline diameters depending on the quantity and type of the heaters connected to the main line according to the table on p.
In case of a complex installation, that is when the units are at least 40 m from the heat source, one has to correct the pipe diameters recalculating them for smaller water flow speed. It is the easiest to achieve the close of the fan together with the closing of the valve by connecting the whole unit to a power grid, protected by a redundant circuit breaker, through a thermostat. If the thermostat input load is too small, or the higher number of the units controlled with the use of the thermostat, one has to use an electric relay, with a coil fed from a thermostat V AC , work input voltage will be V AC, and work input load will be adjusted to the number of VOLCANOS under control.
Yes, you can, although a heat exchanger powered by an upper manifold will be more difficult to vent. Remember to leave sufficient space for mounting a valve actuator, which should be installed on the return stub pipe.
Connection of the valve with actuator to the Volcano EC controller is possible through dedicated input. This input on controller is marked as H1. On H1 input, V AC voltage appears when the controller changes modes for worked mode. Yes, you can. The most frequently used non-freeze medium is a water solution of ethylene glycol.
Make sure to check, however, if other elements of the technological heat installation valves, pump, etc. To do this, check the recommendations of the manufacturers of particular components used.
Remember that the use of glycol mixes, which are usually characterized by higher viscosity and lower thermal capacity, compared to water, increases the resistance of heating medium flow and reduces the heating power of the device. When there is the risk that the temperature of the working medium could fall below the dew point of the cooled air, make sure to build a drip tray and install it under the device.
The use of a VOLCANO device with vertical air outlet can result in flooding the fan motor or the space under the device, since mounting a drip tray in this position of the device is impossible. VOLCANO is not equipped with a drip tray, which is why you should always reduce its work efficiency in the cooling mode, in order to eliminate the phenomenon of drip-trapping by the air flowing through the heat exchanger.
However, when selecting the size of the device, take the low temperature of the heating medium into account. We recommend the use of heaters with large heat exchange surfaces. For this type of installation, we recommend the VR3 heater equipped with a three-row heat exchanger. Yes, there is such a possibility. One has to use H1 clamp on the controller, and for security additionally use an electric relay. On the H1 input, and then on the electric relay a V AC voltage will appear when the controller turns into work mode.
This way, provided the relay is correctly chosen, and can turn the circulation pump on and off. First name and surname:. Company name:. E-mail address:. Select product. Number of devices in the request:. Message content:.
Message sent correctly. Error occured. Try again. Device types. VR Mini. Quality and design Energy efficiency Innovation Download Ask and order. Quality and design. The light and clean casing lines combined with a universal colour palette provide for harmonious adaptation to every room type.
Made of the highest-class ABS with an anti-UV pigment mixture, the casing is characterised by high mechanical strength, durability, and resistance to high temperatures.
The material used guarantees long-term durability. The patented joining system guarantees a durable and precise fitting of the casing elements. Energy efficiency. The difference in the cost of purchase of the device pays for itself after one year of use.
EC motors ensure maximum efficiency even at reduced speeds. Smooth regulation of the speed of EC motors allows to adapt to the needs of any room.
The optimised profile and increased surface area of the fan blades guarantee low operating costs and quiet operation. An innovative blade mount solution allows for their individual adjustment and stable positioning. The guide vane profile assures minimum air flow resistance rates. The design of the diffuser ensures total integration with the rear section of the casing and the fan. Advanced programming functions allow you to plan the operation of the device and let it do its work, without your participation.
The devices can also be controlled by an external BMS system. What is the difference in control between 3-speed AC motors and EC motors? How should we choose the feeding pipeline diameter when connecting more heaters? How to connect the thermostat, so the ac fan turns off together with closing of the valve? Can I connect a feed pipeline to the upper heat exchanger manifold?
NTC Temperature sensor - datasheet. Valve with actuator - datasheet. Technical support. Selection software. Commerce and sport buildings Public facilities. Trust our proven solutions. For additional information please check the detailed documentation for VTS devices.
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VOLCANO Air heating units
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