Electrical air heater

ERH 25-2

Article number: 0082.0104
Manufacturer: MAICO
Electrical air heater, DN 250, alternating current
ERH 25-2 IM0009886.PNG Electrical air heater, DN 250, alternating current

Characteristic curve

ERH 25-2 - Characteristic curve Pressure losses

  1. DRH 16-5
  2. ERH 12-1
  3. ERH 16-2
  4. ERH 10-04
  5. DRH 20-5
  6. DRH 25-6
  7. ERH 20-2
  8. DRH 25-2
  9. DRH 31-6

ERH 25-2 - Characteristic curve Temperature rise

  1. ERH 10-4
  2. ERH 12-1
  3. ERH 16-2, ERH 20-2, ERH 25-2
  4. DRH 16-5, DRH 20-5
  5. DRH 25-6, DRH 31-6

Dimensioned drawing

ERH 25-2 - Dimensioned drawing [mm]

A: 250 mm

Technical data

ERH 25-2 - Technical data

Article ERH 25-2
Type of voltage Alternating current
Rated voltage 230 V
Frequency 50 Hz
Imax 9,1 A
Degree of protection IP 43
Installation Inside
Installation position horizontal / vertical
Housing material Sheet steel, galvanised
Weight 4,3 kg
Nominal size 250 mm
Width 250 mm
Height 331 mm
Depth 375 mm
Air heater type electrical
Heater power rating 2.100 W
Packing unit 1 piece
Range C
GTIN (EAN) 4012799821045
Article number 0082.0104

Accessories / Accessories of

ERH 25-2 - Accessories / Accessories of

Specific accessories

Product type Name Art. No. Price*(EUR) Action
Air filter TFE 25-4 0149.0079 on request
  • On the notes
Air filter TFE 25-5 0149.0063 on request
  • On the notes
Air filter TFE 25-7 0149.0054 on request
  • On the notes
Temperature control system ETL 16 P Discontinued product 0157.0824 on request
  • On the notes
Temperature control system DTL 16 P 0157.0825 on request
  • On the notes
Channel sensor FL 30 P 0157.0780 on request
  • On the notes
Room sensor FR 30 P 0157.0781 on request
  • On the notes
Air flow monitor LW 9 0157.0779 on request
  • On the notes

is a special accessory of

Product type Name Art. No. Price*(EUR) Action
Sound-insulated ventilation box ESR 25 S No longer available for delivery 0080.0230 on request
  • On the notes

is a general accessory of

Product type Name Art. No. Price*(EUR) Action
Centrifugal duct fan ERR 25/1 0080.0277 on request
  • On the notes
Sound-insulated ventilation box ESR 25-2 EC 0080.0713 on request
  • On the notes
Sound-insulated ventilation box ESR 25/1 No longer available for delivery 0080.0284 on request
  • On the notes
Sound-insulated ventilation box ESR 25-2 No longer available for delivery 0080.0613 on request
  • On the notes
Sound-insulated ventilation box ESR 25-2 No longer available for delivery 0080.0059 on request
  • On the notes
Sound-insulated ventilation box ESR 25-2 S No longer available for delivery 0080.0620 on request
  • On the notes
ESR 25 EC No longer available for delivery 0080.0087 on request
  • On the notes
Quickbox ESQ 25/4 No longer available for delivery 0080.0027 on request
  • On the notes
Quickbox DSQ 25/4 No longer available for delivery 0080.0032 on request
  • On the notes

Product description

Productdescription

ERH 25-2

short description

Electrical air heater, DN 250, alternating current

Product description

  • Electrical air heater for ventilation systems.
  • With non-glowing stainless steel tubular radiators.
  • Operate with ETL/DTL temperature controller (see accessories).
  • Increased danger of fire if tubular radiators are dirty. Install TFE air filter as a prevention.
  • Recommended accessories: FL channel sensor or FR room sensor, LW 9 air flow monitor, US 16 T contactor and TFE... air filter .

Installation instructions

  • Mount the water-air heater on the fan's pressure side in order to prevent fan motor overheating. An arrow marked on the housing shows the default air direction through the electrical air heater.
  • Mount a 1 m to 1.5 m long air duct fitting between fan and electrical air heater to ensure optimum inflow to the electrical air heater.
  • Inflow speed can be controlled using an LW 9 air flow monitor.
  • If the inflow speed falls below 1.5 m/s, the electrical air heater must be switched off.

Safety instructions

  • Increased danger of fire if the tubular radiators are dirty. Install TFE air filter as a prevention.
  • Design in accordance with VDE, Device and Product Security Laws and the corresponding EU Directives.
  • With 2 temperature limiters switching independently of each other.
  • Minimum distance to inflammable material: 150 mm (if distance is less, install appropriate insulation).

Table of contents

Wiring diagram

ERH 25-2 - Wiring diagram

ERH... electric air heater with LW 9 air flow monitor and ST speed controller

K1 - heating release (US16T)

ERR .. / 1 - centrifugal fan

LW 9 - air flow monitor

ETL 16 P - electronic temperature controller

DTL 16 P - electronic temperature controller

FL 30P channel sensor

ST.. STU.., STS.. speed controller

ERH - electric air heater

F1 - temperature limiter

F2 - safety temperature limiter

N - night reduction

  1. Only with DTL 16 P


ERH 10-04 with fans

S1 system on

K1 heating release (US16)

ERR.. centrifugal duct fan

LW 9 air flow monitor (in position N)

ETL 16P electronic temperature controller

DTL 16P electronic temperature controller

FL 30P channel sensor

FR 30P room sensor with setpoint generator

ERH.. electric air heater

F1 temperature limiter

F2 safety temperature limiter

N - night reduction

  1. Only with DTL 16 P


Predecessor - successor

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