VENTS NKV 250-4 - channel water heater Ø250 mm, 4-row

VENTS NKV 250-4 - channel water heater Ø250 mm

VENTS NKV 250-4 is a four-row water heater for heating air in ventilation. Model for round channel with nominal diameter of 250 mm, with water connection G 1′′. The four-row exchanger heats the flowing air. In the selection, take into account the parameters of the heating circuit, the required air expenditure and the space for the enclosure with dimensions B × H × L: 470 × 350 × 350 mm.

Construction and application

The galvanised housing houses a heat exchanger with copper tubes and aluminium lamellas. Seals with adapters help to get a tight connection to the wires. The device requires the heating agent and air flow provided by the ventilation system to be connected to the circulation.

Technical data NKV 250-4

Power selection and assembly

Heating power is not one constant value. Depends on the inlet air consumption and temperature and heating factor parameters. The selection shall be based on the characteristics of the manufacturer for the four-row version.

Consider the flow direction indicated on the housing and the possibility of venting the exchanger. Apply the filter before the heater. The manufacturer recommends installation behind the fan, with an interval of at least two diameters of the heater, and control automation and protection against freezing. The details of the connection shall be specified by the manufacturer’s documentation.

Frequently Asked Questions

What diameter does the NKV 250-4 fit in?

To a channel with a nominal diameter of 250 mm. In the manufacturer's table, the size of the ØD connector is 248 mm; these are two different sizes describing the selection and execution of the connector.

What does "-4" mean?

Means four rows of exchanger pipes. This description refers to the version NKV 250-4.

Is it an electric heater?

Nope. The air is heated with heat transmitted by the agent in water circulation. The heater requires a suitable heat source.

Can you install a heater outside?

According to the catalogue using water, installation is provided inside the rooms. External assembly requires a non-freezing mixture as a heat carrier and a solution to the installation according to the manufacturer's documentation.