Airbloc AB industrial air curtains provide a barrier of high velocity air that helps block incoming winds and stops warm air escaping. They achieve this by delivering a powerful barrier of heated air across the entire width of the doorway. Units can be easily fitted within existing or new buildings ...
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Click on the Model for technical data, dimensions, accessories
AB N - industrial, horizontal mounting, max. mounting height 6 m, delivered with control panel
AB175N 40 kW heat output, high air flow 7068 m³/h, fans power 1650 W, length 1.75 m, 2 year WARRANTY
AB175N
40 kW heat output, high air flow 7068 m³/h, fans power 1650 W, length 1.75 m, 2 year WARRANTY
AB225N 54 kW heat output, high air flow 9425 m³/h, fans power 2200 W, length 2.25 m, 2 year WARRANTY
AB225N
54 kW heat output, high air flow 9425 m³/h, fans power 2200 W, length 2.25 m, 2 year WARRANTY
AB350N 80 kW heat output, high air flow 14136 m³/h, fans power 3300 W, length 3.5 m (2 x AB175N), 2 year WARRANTY
AB350N
80 kW heat output, high air flow 14136 m³/h, fans power 3300 W, length 3.5 m (2 x AB175N), 2 year WARRANTY
AB400N 94 kW heat output, high air flow 16493 m³/h, fans power 3850 W, length 4 m (AB175N + AB225N), 2 year WARRANTY
AB400N
94 kW heat output, high air flow 16493 m³/h, fans power 3850 W, length 4 m (AB175N + AB225N), 2 year WARRANTY
AB450N 108 kW heat output, high air flow 18850 m³/h, fans power 4400 W, length 4.5 m (2 x AB225N), 2 year WARRANTY
AB450N
108 kW heat output, high air flow 18850 m³/h, fans power 4400 W, length 4.5 m (2 x AB225N), 2 year WARRANTY
AB525N 120 kW heat output, high air flow 21204 m³/h, fans power 4950 W, length 5.25 m (3 x AB175N), 2 year WARRANTY
AB525N
120 kW heat output, high air flow 21204 m³/h, fans power 4950 W, length 5.25 m (3 x AB175N), 2 year WARRANTY
AB575N 134 kW heat output, high air flow 23561 m³/h, fans power 5500 W, length 5.75 m (2 x AB175N + 1 x AB225N), 2 year WARRANTY
AB575N
134 kW heat output, high air flow 23561 m³/h, fans power 5500 W, length 5.75 m (2 x AB175N + 1 x AB225N), 2 year WARRANTY
AB625N 148 kW heat output, high air flow 25918 m³/h, fans power 6050 W, length 6.25 m (2 x AB225N + 1 x AB175N), 2 year WARRANTY
AB625N
148 kW heat output, high air flow 25918 m³/h, fans power 6050 W, length 6.25 m (2 x AB225N + 1 x AB175N), 2 year WARRANTY
AB675N 162 kW heat output, high air flow 28275 m³/h, fans power 6600 W, length 6.75 m (3 x AB225N), 2 year WARRANTY
AB675N
162 kW heat output, high air flow 28275 m³/h, fans power 6600 W, length 6.75 m (3 x AB225N), 2 year WARRANTY
Model AB175N AB225N AB350N AB400N AB450N AB525N AB575N AB625N AB675N
General data
Maximum door width m 1,75 2,25 3,5 4 4,5 5,25 5,75 6,25 6,75
Maximum mounting height m 6
Number of modules pcs 1 2 3
Heating medium   gas
Maximum heating capacity kW 40 54 80 94 108 120 134 148 162
Gas flow rate
Natural gas (G20) m3/h 4,7 6,3 9,4 11,0 12,6 14,1 15,7 17,3 18,9
Natural gas (G25) m3/h 5,4 7,4 10,8 12,8 14,8 16,2 18,2 20,2 22,2
Propane (G31) l/h 7,0 9,4 14,0 16,4 18,8 21,0 23,4 25,8 28,2
Gas supply pressure
Natural gas (G20) mbar max. 25 mbar ; min. 17 mbar ; nominal 20 mbar
Natural gas (G25) mbar max. 30 mbar ; min. 20 mbar ; nominal 25 mbar
Propane (G31) mbar max. 45 mbar ; min. 25 mbar ; nominal 37 mbar
Fan data
Fan steps   2
Fan type   centrifugal
Number of fans pcs 3 4 6 7 8 9 10 11 12
Maximum airflow m3/h 7068 9425 14136 16493 18850 21204 23561 25918 28275
Electrical data
Electrical supply   230V 1 phase 50 Hz
Current rating (per fan) amps 4,5
Motor power (per fan) W 550
Total current rating amps 13,5 18 27 31,5 36 40,5 45 49,5 54
Total fans electrical load kW 1,65 2,2 3,3 3,85 4,4 4,95 5,5 6,05 6,6
Total electrical load kW 1,75 2,3 3,5 4,05 4,6 5,25 5,8 6,35 6,9
Dimensions
Width mm 1750 2250 3500 4000 4500 5250 5750 6250 6750
Depth mm 950
Height mm 700
Flue diameter mm Ø 130
Gas connection BSP/Rc 1/2"
Weight kg 185 230 370 415 460 555 600 645 690

Dimensions

AB Series gas air curtain dimensions

Standard models

Model AB175N AB225N
A mm 1750 2250
B mm 950
C mm 457
D mm 700
E mm 700
F mm 125
G mm 1710 2210

Models constitution

Model AB175 AB225
AB350 x2  
AB400 x1 x1
AB450   x2
AB525 x3  
AB575 x2 x1
AB625 x1 x2
AB675   x3

Airbloc AB industrial air curtains provide a barrier of high velocity air that helps block incoming winds and stops warm air escaping. They achieve this by delivering a powerful barrier of heated air across the entire width of the doorway. Units can be easily fitted within existing or new buildings and are ideal for open doorways.

The open door not only causes discomfort but greatly increases energy loss and the running costs of the building. Airbloc units offer a cost-effective, energy efficient solution to these problems.

Units are mounted horizontally above the door to enable high-level warm air to be re-circulated to working level.

Features & Benefits

  • Lower energy bills; air curtains provide an effective barrier to prevent the loss of warm air through open doors
  • Complement and improve efficiency of conventional heating systems
  • Allow doors to be left open for fork lift access
  • Heated units can operate when the door is closed to provide supplementary heating
  • Models are supplied to site in modular format for ease of handling
  • All models are supplied with remote control panels
  • Optional fan speed control is available on all models

Model Range

  • Nine models, for door widths from 1.75 metres to 6.75 metres
  • Suitable for doorways up to six metres high
  • Nominal heat outputs from 50kW to 195kW
  • Units may be specified for either use on natural gas (G20) or propane (G31)
  • Units are suitable for horizontal mounting only, over the top of a door

AB Series Applications

  • Distribution centres
  • Hangars
  • Industrial buildings
  • Retail unit stockrooms
  • Warehouses
  • Cold stores
The problem

When doors are opened in heated buildings, outside, colder, more dense air flows in through the bottom half of the door opening, whilst warm internal air flows out through the upper part of the doorway.

This results in considerable energy loss from the building and a layer of cold air forming at low level reducing comfort levels.

Problem
Heated building without air curtain
The solution

The installation of an Airbloc energy saving air curtain provides a barrier of air to separate the indoor and outdoor climates and deflect the natural convection airflow to retain heat inside the building.

The units operate when door opens and can also operate after the door has closed to supply supplementary heat.

AB horizontal solution
Horizontal mounting
The technology

The Airbloc design provides air at a critical velocity, volume flow and temperature for optimum performance. The evenly distributed airflow across the full width of the door ensures effective tempering of incoming air.

Industrial doors require high air volumes for effective climate separation, the width of the air jet is critical to the unit performance and to maintain optimum air velocity this requires high primary air volumes. Units with a low air volume and narrow jet width do not provide sufficient resistance to the cold outside air. The Airbloc units have a 155mm outlet which combined with the high primary air volume provides a far more effective air barrier against external cold air, thereby reducing cold air ingress and improving energy savings.

To transform the turbulent airflow created at the fan outlet whilst at the same time optimising velocity the discharge section of the Airbloc units incorporate robust 70mm deep aluminium aerofoil profile blades which act as air straightening vanes to produce a laminar airflow discharge whilst minimising airflow resistance. To allow the air discharge to be adjusted to suit prevailing conditions, the complete assembly adjusts as a single section to maintain the airflow profile, once adjusted the complete assembly can then be locked into position. A three speed fan allows the airflow and velocity to be adjusted to suit varying door heights or exposure levels.

AB technology
Pattern of airflow
AB N/P gas fired air curtains
Manuals 2.9 MB
Declarations of conformity 1011 KB
Brochures 2.2 MB
AB gas fired air curtains with combined flue manual 1.1 MB
AB gas fired air curtains with combined flue for fresh and exhaust air manual 2.1 MB
Airbloc ГОСТ certificates for Russia 763 KB
ГОСТ certificates for Russia 4.6 MB