The Reventon HC is an air-to-water heater for hall heating: a heat exchanger supplied with heating water from the existing heating system, and a fan that blows the heated air into the room. On this page, you can choose between 4 sizes (HC20-3S, HC30-3S, HC35-3S, HC45-3S) with a heating capacity of 21.4 to 42.0 kW according to the page^* and accessories as required (with swivel console HC20-45, with swivel console and 3-speed speed controller with thermostat HC3S, with swivel console and programmable HMI control, complete set). It is connected to 230 V, AC motor according to the page; three fan speeds (AC fan).

Performance and range of application

Heating capacity according to the page: HC20-3S 21.4 kW; HC30-3S 26.4 kW; HC35-3S 30.3 kW; HC45-3S 42.0 kW. Nominal values according to the page without stating the water and air temperatures they refer to. The heating capacity of an air-to-water heater is not a fixed number: it increases with the flow temperature of the heating water and decreases when the device is operated at low temperature from a heat pump. Which size and how many devices your hall needs depends on the heating load and the available water temperature; we check this upon request. Range of application: halls with a central heating water supply (heating boiler, heat pump, district heating); the page does not mention specific building types.

* The heating capacity of an air-to-water 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 devices are determined by the calculated heating load of the hall, not the floor area. The binding design is carried out on an object-specific basis. For the design of your property, please contact us.

The most important advantages at a glance

• 4 sizes from 21.4 to 42.0 kW according to the page (HC20-3S, HC30-3S, HC35-3S, HC45-3S), one page for the entire range.
• Heating water from the existing system: boiler, heat pump, or district heating, 3/4 inch connection.
• Three fan speeds (AC fan).
• Accessories as an option: 3-speed speed controller with thermostat HC3S or programmable HMI control, both, swivel console; complete set with hoses and valve with actuator.
• Housing: EPP (expanded polypropylene).

Detailed functions

Heat exchanger and heating water

Heat exchanger: copper-aluminum, according to the page as a series with 1, 2, or 3 rows (series range 2 to 80 kW); the page does not state how many rows the four sizes on this page have. 3/4 inch connection (according to the page for hoses and valve of the complete set). The page does not state the maximum water temperature and maximum operating pressure; upon request. Whether the device provides the desired performance at low temperature from a heat pump depends on the operating point; we calculate this upon request.

Fan and air ducting

Three fan speeds (AC fan). The page does not state the air volume, sound pressure level, and throw distance; we provide the values upon request. The page makes no statement about the air guide vanes.

Control and accessories

3-speed speed controller with thermostat HC3S or programmable HMI control, both as an accessory option according to the page; the page does not state the functional scope of the HMI control.

Mounting

Swivel console HC20-45 as an accessory option; the page does not state whether the device can also be hung from the ceiling. Installation, hydraulic connection, venting, and electrical connection are carried out by a specialist company.

Scope of delivery

Depending on the selected option according to the page:

• Device without accessories: the air heater alone
• with swivel console HC20-45: air heater and swivel console
• with swivel console and 3-speed speed controller with thermostat HC3S: air heater, swivel console, controller HC3S
• with swivel console and programmable HMI control: air heater, swivel console, HMI control
• Complete set: air heater, swivel console, controller HC3S, 2 hoses HC 3/4 inch, 1 valve HC 3/4 inch with actuator

What you need additionally

• 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 electrical supply, AC motor according to the page with fuse, control cable to the controller
• Installation, hydraulic and electrical connection, and commissioning by a specialist company

Technical data

Model	HC20-3S	HC30-3S	HC35-3S	HC45-3S
Heating capacity according to the page	21.4 kW	26.4 kW	30.3 kW	42.0 kW
Air volume	not stated on the page	not stated on the page	not stated on the page	not stated on the page
Sound pressure level	not stated on the page	not stated on the page	not stated on the page	not stated on the page
Power consumption	not stated on the page	not stated on the page	not stated on the page	not stated on the page
Throw distance	not stated on the page	not stated on the page	not stated on the page	not stated on the page
Heating water connection	3/4 inch (according to the page for hoses and valve of the complete set)	3/4 inch (according to the page for hoses and valve of the complete set)	3/4 inch (according to the page for hoses and valve of the complete set)	3/4 inch (according to the page for hoses and valve of the complete set)
Max. temperature of the heating medium / operating pressure	not stated on the page	not stated on the page	not stated on the page	not stated on the page
Power supply	230 V, AC motor according to the page	230 V, AC motor according to the page	230 V, AC motor according to the page	230 V, AC motor according to the page
Weight	not stated on the page	not stated on the page	not stated on the page	not stated on the page
Dimensions	636 x 598 x 340 mm (W x H x D) for all four sizes according to the page	636 x 598 x 340 mm (W x H x D) for all four sizes according to the page	636 x 598 x 340 mm (W x H x D) for all four sizes according to the page	636 x 598 x 340 mm (W x H x D) for all four sizes according to the page
Housing	EPP (expanded polypropylene) according to the page	EPP (expanded polypropylene) according to the page	EPP (expanded polypropylene) according to the page	EPP (expanded polypropylene) 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 Reventon HC is suitable for my hall?

This cannot be determined from the floor area. The decisive factors are the heating load of the hall (insulation, height, doors, use) and the temperature of the heating water, because the capacity according to the page is between 21.4 and 42.0 kW per model. Often, several smaller devices are more sensible than one large one, so that the heat is distributed evenly. We check the number and size upon request.

What water temperature does the air heater need?

The page does not state the maximum water temperature and operating pressure; we provide them upon request. There is no minimum temperature, but with a decreasing flow temperature, the heating capacity decreases; with a heat pump at 35 to 45 °C flow, less of this is lost than with the boiler at 70 °C or more.

What is included in the individual options?

According to the page: Device without accessories: the air heater alone; with swivel console HC20-45: air heater and swivel console; with swivel console and 3-speed speed controller with thermostat HC3S: air heater, swivel console, controller HC3S; with swivel console and programmable HMI control: air heater, swivel console, HMI control; complete set: air heater, swivel console, controller HC3S, 2 hoses HC 3/4 inch, 1 valve HC 3/4 inch with actuator. Piping, shut-off valves outside the complete set, electrical supply, and mounting material are not included.

How is the air heater controlled?

3-speed speed controller with thermostat HC3S or programmable HMI control, both as an accessory option according to the page; the page does not state the functional scope of the HMI control. Without a controller, the device runs via a building-side circuit; temperature control requires a thermostat or a control with a setpoint.

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

The page does not state the sound pressure level and throw distance; we provide the values for each fan speed upon request.

Can I connect the air heater to a heat pump?

Hydraulically yes, it is a heating water consumer like a radiator. The achievable performance then depends on the flow temperature of the heat pump and is below the value at boiler temperature; whether the heating load is covered by this, we check upon request.

Where is the device mounted?

Swivel console HC20-45 as an accessory option; the page does not state whether the device can also be hung from the ceiling. The airflow should point towards the living area, without blowing directly at people; the throw distance helps in choosing the mounting location.

May I mount and connect the air heater myself?

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