Nad Klima

The DAL 358 permits optimal configuration of the ventilation system to meet the ventilation requirements of a room. The eccentric rollers allow for a variety of airstream configurations, even after the unit has been installed.

The DAL 358’s technology provides high speed air discharge with low acoustic power.

The efficiency of air diffusion (Ez) of the high induction DAL 358 diffuser equal or greater 1.1

Within applicable fields of DAL 358, this factor may formally be regarded for the purposes of calculating the amount of fresh air for a vessel making use of heating through the ceiling more than 15˚F (8˚C) that the room temperature and returns on the ceiling. The standard 129 is allowed the use of Table 6.2 rating: 5 of ANSI / ASHRAE 62.1 .

Original NRC report

Bénéfices

Rapid reduction of flow speed and temperature variations caused by high induction
Low acoustic power for high airflow rates
Stable helical airflow and a variety of air streams available in 1,2 or 3 directions
Eccentric rollers allowing for 180° airflow adjustment
Possibility of adjusting airflows, even after installation
Possibility of reducing total airflow rate as much as 25% in VAV
Approximately 3 times more induction than a conventional 4-way diffuser
Approximately 3 times less temperature variation in occupied area than a traditionnal diffuser.
Possibility of eliminating external heating sources due to the diffuser‘s heating abilities.
Fewer diffusers required
Allows for a reduction in the total number of units required to circulate a fixed volume of air.
Adaptable to systems requiring constant or variable airflows