Electrical air heater with controller

DRH 25-9 R

Article number: 0082.0145
Manufacturer: MAICO
Electric air heater with integrated temperature controller, DN 250, three-phase AC
DRH 25-9 R IM0009879.PNG Electric air heater with integrated temperature controller, DN 250, three-phase AC

Characteristic curve

DRH 25-9 R - Characteristic curve Pressure losses

  1. ERH 16-2 R
  2. DRH 16-5 R
  3. DRH 20-6 R
  4. DRH 25-9 R
  5. DRH 31-12 R
  6. DRH 35-12 R
  7. DRH 40-12 R

DRH 25-9 R - Characteristic curve Increase in temperature

  1. DRH 25-9 R
  2. DRH 31-12 R
  3. DRH 35-12 R
  4. DRH 40-12 R

DRH 25-9 R - Characteristic curve Increase in temperature

  1. ERH 16-2 R
  2. DRH 16-5 R
  3. DRH 20-6 R

Dimensioned drawing

DRH 25-9 R - Dimensioned drawing [mm]

DRH 35-12 R: No rubber seal on the connection couplings

A: 250 mm

Technical data

DRH 25-9 R - Technical data

Article DRH 25-9 R
Minimum air flow volume 270 m³/h
Type of voltage Three-phase AC
Rated voltage 400 V
Frequency 50 Hz
Imax 13 A
Degree of protection IP 43
Installation Inside
Installation position horizontal / vertical
Housing material Sheet steel, galvanised
Weight 6,5 kg
Nominal size 250 mm
Width 250 mm
Height 331 mm
Depth 375 mm
Air heater type electrical
Heater power rating 9.000 W
Packing unit 1 piece
Range C
GTIN (EAN) 4012799821458
Article number 0082.0145

Accessories / Accessories of

DRH 25-9 R - 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
Air flow monitor LW 9 0157.0779 on request
  • On the notes

General accessories

Product type Name Art. No. Price*(EUR) Action
Contactor US 16 T 0157.0769 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

DRH 25-9 R

short description

Electric air heater with integrated temperature controller, DN 250, three-phase AC

Product description

  • Electrical air heater for ventilation systems.
  • With integrated temperature controller.
  • With non-glowing stainless steel tubular radiators.
  • FR 30 P room sensor and FL 30 P channel sensor included in the scope of delivery.
  • Increased danger of fire if tubular radiators are dirty. Install TFE air filter as a prevention.
  • Recommended accessories: LW 9 air flow monitor 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

DRH 25-9 R - Wiring diagram

Duct fan with DRH 25-9R, DRH 31-12R, DRH 35-12R and DRH 40-12R electric air heaters

S1 - system on

S - sensor

US16 - all-pole isolating switch (contactor)

ERR... centrifugal duct fan

DRH...R electric air heater: DRH 25-9R, DRH 31-12R, DRH 35-12R, DRH 40-12R

B=Int/ext bridge must be closed

C=Do not change potentiometer setting

D=Setpoint potentiometer for MIN limitation

E=Setpoint potentiometer for MAX limitation

F=Bridge for MAX limitation, bridge must be closed!

G=If bridge is closed, MIN limitation is also active

FR30P - ext. setpoint controller (0-30°C) with room sensor

FL60P - ext. channel sensor for MIN, MAX limitation

LW9 - air flow monitor (in position N)

Installation of LW9 sensor on incoming side of air heater

0-30°C setpoint setting and recording of room temperature with FR30P

0-60°C min/max limitation in supply air channel with FL60P



Predecessor - successor

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