VARIO fresh-nova+

VARIO fresh-nova+ single device: 5 types, 20-60 l/min nominal capacity
Hygienic, energy-saving domestic hot water preparation (instantaneous water heater)
Integrated outdoor temperature-controlled heating circuit control and heat request - acts as a small system controller
Counterflow plate heat exchanger and VarCon211 AI control unit: low return temperatures, low pressure losses; heat supply via stratified heat exchanger or buffer cylinder

Areas of application

The VARIO fresh-nova+ range of appliances comprises electronically controlled fresh water heaters as individual appliances in five output sizes in the nominal output range from 20 to 60 l/min.
As instantaneous water heaters, they enable hygienic and energy-saving domestic hot water preparation in domestic installations.

An outdoor temperature-controlled heating circuit control and a heat request function are integrated as an extension. This turns the device into a small system controller.

Generously dimensioned counterflow plate heat exchangers ensure low return temperatures and low pressure losses. The VarCon211 electronic controller uses an adaptive neural network, a method from the field of artificial intelligence (AI), to automatically optimize the control quality of the DHW heating under given local operating conditions.

Typically, a stratified tank or standard buffer cylinder supplies the fresh water heater with heating water and also serves as an intermediate storage tank for space heating.

Intelligent networking

The VarCon211 electronic controller uses an adaptive neural network to automatically optimize the control quality under local operating conditions.

Integrated circulation pump control

The „on-demand“ or „time-dependent“ operating modes are possible for switching on. A sensor in the circulation return line can be used to switch off when the set temperature is reached.

Models suitable for the intended use

Five output sizes in the nominal output range from 20 to 60 l/min.

Functions

The standard functions include

domestic hot water heating,
the circulation pump control
Heating group control and
Heat requirement.

Domestic hot water heating
The VARIO fresh-nova heats drinking water using the flow-through method. When a hot water tap is opened, the integrated controller registers the flow rate sensor and starts the charging pump at the correct speed. This pumps water from the cylinder through the stainless steel plate heat exchanger in the quantity that exactly covers the heating requirement for hot water preparation. The hot water temperature can be adjusted to demand via 6 switching points per day of the week.

Important information for fresh water heating is continuously stored and processed in the controller's neural network. This enables it to “learn” and adapt its behavior to the respective operating conditions.

Application

The VARIO fresh-nova range of appliances is ideal for use in detached houses and small commercial buildings, for new builds and refurbishment of heating systems with a view to hygiene and energy saving.