CTB roof exhaust fans are designed for ventilation of rooms with a low degree of air pollution. They are used in exhaust systems from flats, toilets, offices, shops and warehouses.

Construction

Roof radial fans mounted directly on the ventilation duct, with the impeller backward curved, made of galvanized sheet steel. The fan casing is made of galvanized steel sheet, painted with epoxy paint. All models are equipped with a protective mesh. The CTB fan series consists of four sizes for the diameters of 160, 200, 250 and 315 mm ventilation ducts. Each of CTB fans is standard equipped with a service switch with IP 55 protection level placed on the fan casing and a connection piece with a rubber gasket.

Electric engine

CTB fans are equipped with single-phase 230V 50Hz induction motors with an external rotor, IP 44 protection class and F insulation class.

Type	n_max [rot./min]	P_max [W]	Sound pressure level [dB(A)]	Q_max [m³/h]	dB(A)		Weight [kg]
Type	n_max [rot./min]	P_max [W]	Sound pressure level [dB(A)]	Q_max [m³/h]	Intake	Exhaust	Weight [kg]
CTB/4-400/160	1425	41	0,18	450	53	60	5,5
CTB/4-500/200	1450	47	0,21	570	57	63	6,5
CTB/4-800/250	1430	55	0,24	840	58	64	8,0
CTB/4-1300/315	1410	110	0,48	1400	62	69	9,0

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