… conditioned air), not electrically heated, incorporating a motor-driven fan or blower, and parts thereof, of iron or …
Explanatory notes
… conditioned air), not electrically heated, incorporating a motor‑driven fan or blower, and parts thereof, of iron or … air under pressure is passed. The two components are mounted in a common housing fitted with a grille. When the … oil, gas). These self‑contained heaters, fixed or mobile, consist mainly of a combustion chamber (with burner) …