Axial roof fan

EZD 25/2 B

Article number: 0087.0202
Manufacturer: MAICO
Axial roof fan, horizontal air outlet, DN 250, alternating current
Application examples: Production facility, Workplace, Commercial premises, Restaurant, Showroom
EZD 25/2 B IM0009965.PNG Axial roof fan, horizontal air outlet, DN 250, alternating current

Characteristic curve

EZD 25/2 B - Characteristic curve

  • EZD 25/2 B IM0014499.PNG Axial roof fan, horizontal air outlet, DN 250, alternating current

Dimensioned drawing

EZD 25/2 B - Dimensioned drawing [mm]

  • EZD 25/2 B IM0001651.PNG Axial roof fan, horizontal air outlet, DN 250, alternating current

Technical data

EZD 25/2 B - Technical data

Article EZD 25/2 B
Air flow volume 1.900 m³/h
Air volumenom 1.290 m³/h / in opt. efficiency
Pressure pfs, nom 112 Pa / in opt. efficiency
Rotating speed nnom 2.930 1/min / in opt. efficiency
Rotating speed 2.954 1/min
Impeller type axial
Speed controllable
Reversing capacity
Type of voltage Alternating current
Rated voltage 230 V
Frequency 50 Hz
Nominal output 180 W / in opt. efficiency
Inom 1 A / in opt. efficiency
Imax 1,3 A
Degree of protection IP 55
Insulation class F
Installation site Roof
Installation position vertical
Material Sheet steel, galvanised
Weight 16,9 kg
Nominal size 250 mm
Width 570 mm
Height 570 mm
Depth 325 mm
Airstream temperature at nominal current -20 °C up to 60 °C
Airstream temperature at IMax -20 °C up to 60 °C
Packing unit 1 piece
Range C
GTIN (EAN) 4012799872023
Article number 0087.0202
Article EZD 25/2 B
Total efficiency η 29,2 %
Measurement category C
Efficiency category static
Efficiency level N 40,2
Year of manufacture see rating plate
Manufacturer’s name / official registration number / manufacturer's place of establishment Maico Elektroapparate-Fabrik GmbH / Freiburg registration court, HRB 601233 / Villingen-Schwenningen
Art. No. 0087.0202
PBEP / Air volumeBEP / Pfs, BEP 0,185 kW / 1.570 m³/h / 124 Pa
nBEP 2.920 1/min
Specific ratio ≈ 1
Information about dismantling and disposal see mounting instructions
Information about installation, operation and repairs see mounting instructions
Objects used to measure efficiency which are not described by the measurement category Calculation of energy efficiency without protective grille and roof cowl.
Sound power levelLWA7 86 dB(A)

 

63 Hz

125 Hz

250 Hz

500 Hz

1 kHz

2 kHz

4 kHz

8 kHz

Total

LWA7, high (dB(A))

50

58

77

79

83

79

75

67

90

LWA7= housing and free inlet sound power level in dB.

Accessories

EZD 25/2 B - Accessories

General accessories

Product typeNameArt. No.Price*(EUR)Action
Control shutterJRE 250151.0390 on request
  • On the notes
ServomotorMS 80157.0760 on request
  • On the notes
ServomotorMS 8 P0157.0761 on request
  • On the notes
Protective grille, metalSG 250150.0115 on request
  • On the notes
Protective grille, synthetic materialSGK 250059.0162 on request
  • On the notes
Flexible couplingELA 250092.0266 on request
  • On the notes
Flexible cuffEL 250092.0088 on request
  • On the notes
Counter flangeGF 250056.0003 on request
  • On the notes
Counter socketGS 250055.0169 on request
  • On the notes
Suction nozzleAD 250180.0620 on request
  • On the notes
Socket sound absorberSD 250092.0339 on request
  • On the notes
Main switch, service switchHS 30157.0736 on request
  • On the notes
Rotary switchDS 100157.0410 on request
  • On the notes
Reversing switchW 10157.0101 on request
  • On the notes
Reversing switchWU 10157.0102 on request
  • On the notes
ContactorUS 16 T0157.0769 on request
  • On the notes
Speed controllerSTX 2,5New development0157.1562 on request
  • On the notes
Speed controller, distribution boardSTSX 2,5New development0157.1564 on request
  • On the notes
Speed controllerSTU 2,5Discontinued product0157.0815 on request
  • On the notes
Reversing switchUWK 10157.0817 on request
  • On the notes
Speed controller, distribution boardSTS 2,5Discontinued product0157.0255 on request
  • On the notes
5-step transformerTRE 1,6-20157.0158 on request
  • On the notes
5-step transformer, control cabinetTRE 1,6 S-20157.0162 on request
  • On the notes
5-step switch for TRE...S -2/ TR...S-2 5-step transformersESS 200157.0749 on request
  • On the notes
ThermostatTHR 100157.0774 on request
  • On the notes
ThermostatTH 100157.0764 on request
  • On the notes
ThermostatTH 160157.0748 on request
  • On the notes
Temperature control systemEAT 6 G/10157.0808 on request
  • On the notes
Temperature control systemEAT 6 TG0157.0755 on request
  • On the notes
Air flow monitorLW 90157.0779 on request
  • On the notes
Air quality controllerEAQ 10/10157.0777 on request
  • On the notes
Roof socket for flat roofsSO 250093.0360 on request
  • On the notes
Roof socket for flat roofs, tiltableSOK 250093.0992 on request
  • On the notes
Roof socket for pitched roofsSDS 250093.0953 on request
  • On the notes
Roof socket for corrugated and trapezoidal roofsSOWT 250093.0985 on request
  • On the notes
Intermediate socketSZ 250092.0288 on request
  • On the notes
Speed controllerST 2,5No longer available for delivery0157.0811 on request
  • On the notes
Speed controller, reversing switchSTW 2,5No longer available for delivery0016.0142 on request
  • On the notes
Temperature control system, power moduleEALT 6No longer available for delivery0157.0756 on request
  • On the notes

Product description

Productdescription

EZD 25/2 B

short description

Axial roof fan, horizontal air outlet, DN 250, alternating current

Product description

Features

  • Housing, base plate, intake nozzle and rain protection cover made of galvanised sheet steel.
  • Galvanized protective grille on the discharge side, protection against accidental contact in accordance with DIN EN ISO 13857.
  • Sturdy eyebolts enable transport by crane.
  • 8-blade impeller made of glass-fibre filled polyamide. Dynamically balanced at two levels, in accordance with performance level 6.3, DIN ISO 1940, Part 1.
  • Can be switched to ventilation or air extraction (exception EZD ... E).

Air flow direction

  • The following illustration shows the air flow direction:
  1. Standard air flow direction: With air blown across the motor.
  2. Reversing mode: With air drawn across the motor.
  3. Reverse operation (exception EZD ... E): The volumetric flow is reduced by approx. 35 % with abnormal air flow direction.

Motor

  • Asynchronous motor.
  • Reversible. Exception: Fans with shaded-pole motors (".../E").
  • Thermal overload protection as a standard feature.

AC motor

  • EZD model series.
  • Rated voltage 230 V, 50 Hz.
  • "../B" and "../D" fans: Capacitor motors with operating capacitor in terminal box.
  • "../E" fans: Shaded-pole motors, non reversible.
  • Degree of protection for EZD... D and ... E IP 54.
  • Degree of protection for EZD... B IP 55.

Electrical connection

  • Connecting cable, approx. 1.7 m long.

Safety instructions

  • The fan may be operated only if the protection against accidental contact with the impeller is guaranteed to be in accordance with DIN EN ISO 13857.

Special versions

  • The following special versions are available on request, at an extra cost:
    • Special voltages and frequencies.
    • Fans with enhanced anti-corrosion protection.
    • Impellers made of aluminium.
  • 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

EZD 25/2 B - Wiring diagram

EZD..B left-hand operation (air extraction) = standard


EZD..B right-hand operation (ventilation)


EZD ../.. B with ST../STU../STS.. speed controller


EZD ..B with STW speed controller


EZD ..B with STU.. speed controller and UWK 1 reversing switch


Predecessor - successor

EZD 25/2 B - Predecessor

Product typeNameArt. No.Action
Axial roof fanEZD25-2ANo longer available for delivery0087.0402
  • On the notes

Notes
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