Centrifugal roof fan

DRD 31 EC

No longer available for delivery
Article number: 0087.0172
Manufacturer: MAICO
Centrifugal roof fan with EC motor, DN 315
Application examples: Production facility, Workplace, Commercial premises, Industrial building, Restaurant
Product data sheet
DRD 31 EC IM0013832.PNG Centrifugal roof fan with EC motor, DN 315

Characteristic curve

DRD 31 EC - Characteristic curve

  1. Auxiliary characteristics curves for control voltage 2.5 - 10 V

Dimensioned drawing

DRD 31 EC - Dimensioned drawing [mm]

  1. Clear width
  2. Number of holes: 3

Technical data

DRD 31 EC - Technical data

Article DRD 31 EC
Air flow volume 3.500 m³/h
Rotating speed 1.570 1/min
Impeller type radial
Speed controllable
Reversing capacity
Type of voltage Alternating current
Rated voltage 230 V
Frequency 50 Hz
Nominal output 370 W
Imax 1,65 A
Degree of protection IP 54
Installation site Roof
Installation position vertical
Material Aluminium
Weight 15,77 kg
Weight including packaging 20,02 kg
Nominal size 315 mm
Width 630 mm
Height 400 mm
Depth 630 mm
Width with packaging 715 mm
Height with packaging 530 mm
Depth with packaging 715 mm
Airstream temperature at IMax -25 °C up to 60 °C
Packing unit 1 piece
Range E
GTIN (EAN) 4012799871729
Article number 0087.0172

 

63 Hz

125 Hz

250 Hz

500 Hz

1 kHz

2 kHz

4 kHz

8 kHz

Total

LWA5, high (dB(A))

74

LWA6, high (dB(A))

75

LWA5= free inlet sound power level in dB.

LWA6= free outlet sound power level in dB.

Product description

Productdescription

DRD 31 EC

short description

Centrifugal roof fan with EC motor, DN 315

Product description

Features

  • Low energy consumption thanks to EC technology.
  • Attractive aluminium housing.
  • Easily detachable cover.
  • Galvanised protective grille on the discharge side with protection against accidental contact.
  • Sturdy eyebolts enable transport by crane.
  • Impeller with plastic blades curved to the rear, dynamically balanced at two levels, in accordance with performance level 6.3, DIN ISO 1940.

Motor

  • DC motor.
  • Rated voltage 230 V, 50 Hz.
  • Thermal overload protection as a standard feature.
  • Speed output.
  • 0 - 10 V DC control input
  • Soft start.
  • IP X4 degree of protection with closed housing cover.

Electrical connection

  • In terminal box, easily accessible once housing cover has been removed.

Security instructions

  • The fan can be operated only if the protection against accidental contact with the impeller is guaranteed for fans with a free inlet.

Table of contents

Wiring diagram

DRD 31 EC - Wiring diagram

DRD 31 EC, DRD 40 EC and DRD 50 EC roof fans with ST EC 010 potentiometer

Fuse and main switch provided by customer

BT - Operation



DRD 31 EC, DRD 40 EC and DRD 50 EC roof fans with ST EC 3 potentiometer

Fuse and main switch provided by customer

Levels 1 - 3 up to 7 V DC

Levels 2 - 5 up to 9 V DC

Level 3 - 10 V DC

BT - Operation



DRD 31 EC, DRD 40 EC and DRD 50 EC roof fans with ST EC 230 potentiometer

Fuse and main switch provided by customer

BT - Operation



Predecessor - successor

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