DF REC - Air Heaters

Nordair Niche variable air recirculation models are fully CE approved and patented. They provide a constant air volume with up to 80% recirculation air.

The variable air recirculation option combines a constant supply of 20% fresh air which passes over the burner with the remaining air volume being either fresh air, recirculation air or a mixture of fresh and recirculated air.

The variable percentage of fresh air and recirculation air is accurately controlled via a fully modulating face and bypass damper with fresh air introduced using the burner section and recirculation air via an integral bypass.

The fully modulating burner and modulating damper control functions are integrated via a microprocessor control to co-ordinate the heating and ventilation functions.

The system can provide variable make-up air, full building heating or a combination of both, controlled via building pressure sensors and temperature sensors to respond
automatically to building pressure and temperature requirements.