Electric duel heater, tor heating air to approx.40 "C in rectangular ventilation ducts, with a maximum pressure of 100 mm WC and a minimum air How speed of 2 m/s. Theses appliances are made of stainless steel tinned strip heaters fype 6004 {25 x 50) for model 6051 or type 6013 (40 x 80) for model 6052, mounted on a base plate with an IP 30 IK 7 cover in galvanised steel, a 90/100 "C safety thermostat with automatic reset. 3 entry points for cable, dameter 5 to 20 mm. Wiring for 1 or 2 heating stages depending on model. Supply voltage : 230 V IP, 230 V 3P or 400 V 3P 3P depending on connection and power required.
For large heaters, reinforce the internal edges with metal strips.