Electrical air heater

DHP 31-28

Article number: 0082.0097
Manufacturer: MAICO
Electric air heater, three-phase AC, channel dimensions 600 mm x 350 mm

Product data sheet
DHP 31-28 IM0009880.PNG Electric air heater, three-phase AC, channel dimensions 600 mm x 350 mm

Characteristic curve

DHP 31-28 - Characteristic curve Pressure losses

  1. DHP 25-16
  2. DHP 22-9, DHP 28-16
  3. DHP 31-28
  4. DHP 31-16

DHP 31-28 - Characteristic curve Temperature rise

Dimensioned drawing

DHP 31-28 - Dimensioned drawing [mm]

A: 600 mm
B: 350 mm
C: 620 mm
D: 370 mm
E: 739 mm
F: 388 mm

Technical data

DHP 31-28 - Technical data

Article DHP 31-28
Min. flow velocity 1,5 m/s
Type of voltage Three-phase AC
Rated voltage 400 V
Frequency 50 Hz
Imax 40,5 A
Degree of protection IP 43
Installation inside and outside
Installation site Channel
Installation position horizontal / vertical
Housing material Sheet steel, galvanised
Weight 19,55 kg
Weight including packaging 20,5 kg
Channel dimension 600 mm x 350 mm
Width 739 mm
Height 388 mm
Depth 370 mm
Width with packaging 760 mm
Height with packaging 450 mm
Depth with packaging 385 mm
Air heater type electrical
Heater power rating 28.000 W
Packing unit 1 piece
Range D
GTIN (EAN) 4012799820970
Article number 0082.0097

Accessories / Accessories of

DHP 31-28 - Accessories / Accessories of

Specific accessories

General accessories

Product type Name Art. No. Price*(EUR) Action
Contactor US 16 T 0157.0769 on request
  • On the notes

is a general accessory of

Product type Name Art. No. Price*(EUR) Action
Channel fan DPK 31 EC 0086.0802 on request
  • On the notes
Sound-insulated channel fan DSK 31 EC 0086.0803 on request
  • On the notes
Sound-insulated channel fan DSK 31-S EC Discontinued product 0086.0805 on request
  • On the notes
Sound-insulated channel fan DSK 31/1-S EC New development 0086.0814 on request
  • On the notes
Channel fan DPK 31/4 B No longer available for delivery 0086.0667 on request
  • On the notes

Product description

Productdescription

DHP 31-28

short description

Electric air heater, three-phase AC, channel dimensions 600 mm x 350 mm

Product description

  • Electrical air heater for ventilation systems.
  • Flanges on both sides for installation in square ventilation channels.
  • With non-glowing stainless steel tubular radiators.
  • Heater power rating linearly adjustable.
  • Operate with DTL 24 P temperature control system (see accessories).
  • Recommended accessories: FL channel sensor or FR room sensor, LW 9 air flow monitor, TFP ... air filter, US 16 T contactor, DTL 2 P-L (at 16.5 kW to 30 kW).

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 tubular radiators are dirty. Install TFP air filter.
  • With 2 temperature limiters switching independently of each other.
  • Minimum distance to inflammable material: 300 mm (if distance is less, install appropriate insulation).

Table of contents

Wiring diagram

DHP 31-28 - Wiring diagram

DHP with EPK / DPK and DTL 24 P

S1 system off

S2 system on

L1 control light system on

K1 contactor US 16

K2/K3 contactor to be supplied by the customer

DPK..B centrifugal fan, DPK model series

EPK..B centrifugal fan, EPK model series

LW 9 air flow monitor (relay picks up with air flow)

DHP.. DHP 28-28.31-28 air heater

F1 temperature limiter

F2 safety temperature limiter

DTL 24 P electronic temperature controller

DTL 2 P-L basic power board for DTL 24 P

P1 setpoint generator DTL 24 P

S3 night reduction 4 K

FR 30 P room sensor with external setpoint generator

FL 30 P supply air channel sensor



DHP with EPK / DPK and DTL 24 P

S1 system off

S2 system on

L1 control light system on

K1 contactor US 16

K2/K3 contactor to be supplied by the customer

DPK..B centrifugal fan, DPK model series

EPK..B centrifugal fan, EPK model series

LW 9 air flow monitor (relay picks up with air flow)

DHP.. DHP 28-28.31-28 air heater

F1 temperature limiter

F2 safety temperature limiter

DTL 24 P electronic temperature controller

DTL 2 P-L basic power board for DTL 24 P

P1 setpoint generator DTL 24 P

S3 night reduction 4 K

FR 30 P room sensor with external setpoint generator

FL 30 P supply air channel sensor



Predecessor - successor

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