Centrifugal roof fan

DRD 31/4 B

No longer available for delivery
Article number: 0087.0104
Manufacturer: MAICO
Centrifugal roof fan, vertical air outlet, DN 315, three-phase AC
Application examples: Production facility, Workplace, Commercial premises, Industrial building, Restaurant
DRD 31/4 B IM0009963.PNG Centrifugal roof fan, vertical air outlet, DN 315, three-phase AC

Characteristic curve

DRD 31/4 B - Characteristic curve

Dimensioned drawing

DRD 31/4 B - Dimensioned drawing [mm]

  1. Clear width
  2. External duct diameter
  3. Number of holes: 8

Technical data

DRD 31/4 B - Technical data

Article DRD 31/4 B
Air flow volume 3.400 m³/h
Rotating speed 1.425 1/min
Speed controllable
Reversing capacity
Type of voltage Three-phase AC
Rated voltage 400 V
Nominal output 530 W
Inom 1,3 A
Imax 1,4 A
Degree of protection IP 55
Insulation class B
Pole-changeable
Mains cable 5 / 1,5 mm²
Installation site Roof
Installation position vertical
Material Sheet steel, galvanised
Weight 40,5
Shutter integrated
Type of shutter Airstream-operated opening/closing
Nominal size 315 mm
Airstream temperature at nominal current -20 °C up to 60 °C
Airstream temperature at IMax 60 °C
Packing unit 1 piece
Range C
GTIN (EAN) 4012799871040
Article number 0087.0104

 

63 Hz

125 Hz

250 Hz

500 Hz

1 kHz

2 kHz

4 kHz

8 kHz

Total

LWA5, S1 (dB(A))

39

37

43

49

46

56

34

21

58

LWA5, S2 (dB(A))

44

55

53

57

47

62

55

36

65

LWA5, S3 (dB(A))

46

63

61

63

48

58

68

46

71

LWA5, S4 (dB(A))

47

67

67

66

49

63

73

54

76

LWA5, S5 (dB(A))

49

65

76

70

50

66

75

63

80

LWA8, S1 (dB(A))

40

40

47

52

46

57

36

23

60

LWA8, S2 (dB(A))

45

54

56

59

53

60

55

36

66

LWA8, S3 (dB(A))

48

62

63

58

61

62

65

46

73

LWA8, S4 (dB(A))

50

66

69

72

66

69

72

63

79

LWA8, S5 (dB(A))

51

68

73

75

67

72

74

67

81

LWA5= free inlet sound power level in dB.

LWA8= housing and free outlet sound power level in dB.

Accessories

DRD 31/4 B - Accessories

General accessories

Product type Name Art. No. Price*(EUR) Action
Flexible coupling ELA 31 0092.0284 on request
  • On the notes
Exhaust air silencer SDA 31 Discontinued product 0092.0388 on request
  • On the notes
Socket sound absorber SD 31 0092.0340 on request
  • On the notes
Rotary switch DS 10 0157.0410 on request
  • On the notes
Motor protection switch MV 25 0157.0712 on request
  • On the notes
Contactor US 16 T 0157.0769 on request
  • On the notes
5-step switch for TRE...S -2/ TR...S-2 5-step transformers DSS 20 0157.0750 on request
  • On the notes
Thermostat THR 10 0157.0774 on request
  • On the notes
Thermostat TH 10 0157.0764 on request
  • On the notes
Thermostat TH 16 0157.0748 on request
  • On the notes
Air flow monitor LW 9 0157.0779 on request
  • On the notes
Hygrostat HY 10 AP Discontinued product 0157.0358 on request
  • On the notes
Hygrostat HY 10 UP Discontinued product 0157.0357 on request
  • On the notes
Air quality controller EAQ 10/1 0157.0777 on request
  • On the notes
Roof socket for flat roofs SO 30 0093.0361 on request
  • On the notes
Roof socket for flat roofs, tiltable SOK 31 0093.0993 on request
  • On the notes
Roof socket for pitched roofs SDS 31 0093.0978 on request
  • On the notes
Roof socket for corrugated and trapezoidal roofs SOWT 31 0093.0986 on request
  • On the notes
Intermediate socket SZ 31 0092.0289 on request
  • On the notes
5-step transformer TR 2,5-1 No longer available for delivery 0157.0372 on request
  • On the notes
5-step transformer TRV 1,7-1 No longer available for delivery 0157.0533 on request
  • On the notes
5-step transformer, control cabinet TR 2,5 S No longer available for delivery 0157.0742 on request
  • On the notes
Temperature control system ATS No longer available for delivery 0157.0759 on request
  • On the notes
Temperature control system, power module ATL 2,5 No longer available for delivery 0157.0757 on request
  • On the notes
Hygrostat HY 5 No longer available for delivery 0157.0123 on request
  • On the notes
Hygrostat HY 5 I No longer available for delivery 0157.0125 on request
  • On the notes

Product description

Productdescription

DRD 31/4 B

short description

Centrifugal roof fan, vertical air outlet, DN 315, three-phase AC

Product description

Features

  • Attractive housing made of galvanised sheet-steel.
  • Cover easily detachable for cleaning purposes.
  • Galvanized protective grille on the discharge side, protection against accidental contact in accordance with DIN EN ISO 13857.
  • Sturdy eyebolts enable transport by crane.
  • Impeller with blades curved to the rear, dynamically balanced at two levels, in accordance with performance level 6.3, DIN ISO 1940.
  • Impeller made of glass-fibre filled polypropylene.

Three-phase AC motor

  • DRD model series.
  • Rated voltage 400 V, 50 Hz.
  • Thermal overload protection as standard feature, except: available on request for pole-changeable fans.
  • Potential-free terminal connections, which must be connected to an MV 25 protective motor switch or the control circuit of a contactor.
  • Pole-changeable fans: Ensure overload protection is guaranteed by a protective motor switch provided by the customer.
  • DRD 25/64 B: Star / delta switch must be provided by the customer.

Electrical connection

  • To terminal block in the service switch.

Safety instructions

  • The fan can be operated only if the protection against accidental contact with the impeller is guaranteed to be in accordance with DIN EN 13857 for fans with a free inlet.

Special versions

  • The following special versions are available at extra cost on request:
    • Special voltages and frequencies.
    • Single-phase motors with thermal contacts or PTC thermistor, with potential-free terminal connections.
    • Fans with enhanced anti-corrosion protection.
  • Information on operation at temperatures occasionally below -20°C available upon request.
  • If operating with frequency converters, the factory must be consulted.
  • Feasibility must be checked in each case.

Table of contents

Wiring diagram

DRD 31/4 B - Wiring diagram

Predecessor - successor

Notes
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