Nilan Electric Post-Heater

Nilan Elektronachheizregister (electric post-heater) is an electric heater for installation in the supply air duct after a Nilan ventilation unit. According to the manufacturer, a post-heater is used when a constant supply air temperature is required or the air is to be heated further after the heat exchanger; a supply air temperature that is too low can be perceived as a draught.

The heater is controlled with a 0 to 10 V signal via the CTS control built into the Nilan units.

• Required output according to Nilan: temperature difference (K) x 0.34 x airflow (m³/h) = W. Example: without a pre-heater, the supply air at 126 m³/h must be heated from -10 °C to 21 °C; this gives 31 x 0.34 x 126 = 1328 W.
• According to the manufacturer, no special maintenance is required; once a year, check that the power connection is in order.
• The heater is only suitable for heating clean air.

Select the variant according to duct size and output. The table shows the data from the Nilan data sheet for the variants whose design is clearly listed there:

For the variants "Comfort Series External (Ø160 mm / 1200 W)" (764140), "Comfort 450/600 (Ø200 mm / 3000 W)" (764141) and "Comfort / Compact P / S & Combi Series (Ø160 mm / 2000 W)" (764149), the current Nilan data sheet contains no separate line.

Frost protection pre-heaters for the outdoor air duct are available under the Nilan electric pre-heater.

According to Nilan, a minimum distance of 15 cm must be kept between the electric heater and combustible materials; the heater must be insulated with flame-retardant material, and the cover of the connection box must not be insulated. For proper control, the temperature sensor should be placed at least 50 cm after the post-heater. The post-heater must be activated in the software of the ventilation unit.