The Volcano VR heats halls using the existing heating water: the heat exchanger extracts heat from the heating circuit, and the fan blows the warm air directly into the room. On this page, you can choose between 4 sizes (VR Mini AC, VR1 AC, VR2 AC, VR3 AC) with heating capacities of 3 to 75 kW according to the page^* and optional accessories (with swivel bracket and 3-speed speed controller, complete set). It is connected to 230 V, 50 Hz; three fan speeds (AC fan).

Performance and range of application

Heating capacity according to the page: VR Mini AC 3 to 20 kW; VR1 AC 5 to 30 kW; VR2 AC 8 to 50 kW; VR3 AC 13 to 75 kW. The performance ranges for each model are stated on the page; the operating points (water and air temperatures) are not mentioned. The range for each model is due to the heating water: with boiler temperatures, the device achieves the upper end of the performance range, while with lower temperatures from a heat pump, it achieves less of it. Whether one size is sufficient or several units are required, we can check this upon request based on the heating load. Range of application: hall heating with heating water; the page does not mention specific building types.

* The heating capacity of a water-to-air heater depends on the flow and return temperatures of the heating water, the air inlet temperature, and the fan speed; the range stated on the page covers these operating points. The number and size of the units are determined by the calculated heating load of the hall, not the floor area. The definitive design is based on the specific property. For the design of your property, please contact us.

The most important advantages at a glance

• 4 sizes from 3 to 75 kW according to the page (VR Mini AC, VR1 AC, VR2 AC, VR3 AC), one page for the entire range.
• Airflow up to 5700 m³/h according to the table (Speed III, model VR3 AC), horizontal throw range up to 25 m,
• Three fan speeds (AC fan), protection rating IP 54; power consumption from 53 W according to the table.
• Optional accessories: 3-speed speed controller for Wing / Volcano AC, swivel bracket; complete set with hoses and valve with actuator.
• Housing: ABS with UV-protective pigment; adjustable air louvers according to the page.
• Heating water up to 130 °C, operating pressure up to 1.6 MPa according to the page.

Detailed functions

Heat exchanger and heating water

Heat exchanger: 1, 2, or 3 rows depending on the model according to the page, suitable for low-temperature media, tested for tightness according to the page. 3/4-inch connection. Maximum heating medium temperature 130 °C, maximum operating pressure 1.6 MPa according to the page. We can check the performance at a low flow temperature, for example with a heat pump, for your operating point upon request.

Fan and air distribution

Three fan speeds (AC fan), protection rating IP 54. Airflow, sound pressure level, and throw range for each speed are shown in the table below. The air louvers are adjustable according to the page, allowing the airflow to be directed at the working area.

Control and accessories

3-speed speed controller for Wing / Volcano AC as an optional accessory, in a complete set with a thermostat; the page does not provide further details about the controller.

Installation

Swivel bracket included in every set; the page does not mention installation instructions or clearances. Installation, hydraulic connection, venting, and electrical connection must be carried out by a specialist company.

Scope of delivery

Depending on the selected version according to the page:

• with swivel bracket: air heater and one swivel bracket
• with swivel bracket and 3-speed speed controller: air heater, swivel bracket, speed controller for Wing / Volcano AC
• complete set: air heater, swivel bracket, 3-speed speed controller with thermostat, 2 x 3/4-inch hoses, 1 x 3/4-inch valve with actuator

What else you need

• Heating water supply with flow and return (boiler, heat pump, or district heating), piping to the device, shut-off valves, and hoses, unless included in the complete set
• 230 V, 50 Hz electrical supply with circuit breaker, control cable to the controller
• Installation, hydraulic and electrical connection, and commissioning by a specialist company

Technical data

Model	VR Mini AC	VR1 AC	VR2 AC	VR3 AC
Heating capacity according to the page	3 to 20 kW	5 to 30 kW	8 to 50 kW	13 to 75 kW
Airflow (Speed III / II / I)	2100 / 1650 / 1100 m³/h	5300 / 3900 / 2800 m³/h	4850 / 3600 / 2400 m³/h	5700 / 4100 / 3000 m³/h
Sound pressure level (Speed III / II / I)	52 / 42 / 29 dB(A)	56 / 51 / 40 dB(A)	56 / 51 / 40 dB(A)	57 / 51 / 45 dB(A)
Power consumption (Speed III / II / I)	112 / 73 / 53 W	280 / 220 / 190 W	280 / 220 / 190 W	450 / 320 / 245 W
Max. current draw	0.53 A	1.3 A	1.3 A	1.95 A
Throw range horizontal / vertical (Speed III / II / I)	14 / 8 / 5 m / 8 / 5 / 3 m	23 / 20 / 15 m / 12 / 9 / 7 m	22 / 19 / 14 m / 11 / 8 / 6 m	25 / 22 / 17 m / 12 / 9 / 7 m
Heat exchanger rows	2	1	2	3
Water content	1.12 dm³	1.25 dm³	2.16 dm³	3.1 dm³
Heating water connection	3/4 inch	3/4 inch	3/4 inch	3/4 inch
Max. heating medium temperature / operating pressure	130 °C / 1.6 MPa	130 °C / 1.6 MPa	130 °C / 1.6 MPa	130 °C / 1.6 MPa
Power supply	230 V, 50 Hz	230 V, 50 Hz	230 V, 50 Hz	230 V, 50 Hz
Weight	13 kg	21 kg	21.5 kg	25.5 kg
Dimensions	not stated on the page	not stated on the page	not stated on the page	not stated on the page
Housing	ABS with UV-protective pigment according to the page, housing parts with snap connection (Smart Lock according to the page)	ABS with UV-protective pigment according to the page, housing parts with snap connection (Smart Lock according to the page)	ABS with UV-protective pigment according to the page, housing parts with snap connection (Smart Lock according to the page)	ABS with UV-protective pigment according to the page, housing parts with snap connection (Smart Lock according to the page)
Manufacturer according to the page	not mentioned on the page	not mentioned on the page	not mentioned on the page	not mentioned on the page

Frequently asked questions

Which size of the Volcano VR is suitable for my hall?

The basis is the heating load calculation of the hall together with the available flow temperature; the performance range according to the page extends from 3 to 20 kW to 13 to 75 kW. Depending on the size of the hall, one or more units may be suitable. We can carry out the design upon request.

What water temperature does the air heater require?

The page states 130 °C as the maximum heating medium temperature and 1.6 MPa as the maximum operating pressure. The device also operates at a lower flow temperature, but delivers less performance; for heat pump operation, we can check the operating point upon request.

What is included in the individual versions?

According to the page: with swivel bracket: air heater and one swivel bracket; with swivel bracket and 3-speed speed controller: air heater, swivel bracket, speed controller for Wing / Volcano AC; complete set: air heater, swivel bracket, 3-speed speed controller with thermostat, 2 x 3/4-inch hoses, 1 x 3/4-inch valve with actuator. Piping, shut-off valves outside the complete set, electrical supply cable, and installation materials are not included.

How is the air heater controlled?

3-speed speed controller for Wing / Volcano AC as an optional accessory, in a complete set with a thermostat; the page does not provide further details about the controller. We can clarify which control system is suitable for your system, for example with several units or a building management system, upon request.

How loud is the device and how far does the airflow reach?

According to the table: VR Mini AC 52 / 42 / 29 dB(A), throw range 14 / 8 / 5 m horizontally and 8 / 5 / 3 m vertically; VR1 AC 56 / 51 / 40 dB(A), throw range 23 / 20 / 15 m horizontally and 12 / 9 / 7 m vertically; VR2 AC 56 / 51 / 40 dB(A), throw range 22 / 19 / 14 m horizontally and 11 / 8 / 6 m vertically; VR3 AC 57 / 51 / 45 dB(A), throw range 25 / 22 / 17 m horizontally and 12 / 9 / 7 m vertically (Speed III / II / I respectively). At the lowest speed, the sound pressure level decreases, and the throw range also decreases.

Can I connect the air heater to a heat pump?

In principle, yes. The heat exchanger extracts heat from the heating water, regardless of whether it comes from a boiler or a heat pump; at heat pump temperatures, only a portion of the range is usable. We can clarify the appropriate design upon request.

Where is the device mounted?

Swivel bracket included in every set; the page does not mention installation instructions or clearances. The airflow should be directed at the occupied area without blowing directly at people; the throw range according to the table helps in choosing the installation location.

Can I install and connect the air heater myself?

No. Installation, hydraulic connection with venting, electrical connection, and commissioning must be carried out by a specialist company; this also applies to the connection of the controller and a valve with an actuator.