FRIGOVENT air curtains for cold store doors and freezer rooms
THERMOVENT air curtains for service doors and factory gates


The air curtain is mounted with two consoles above the door opening. The current connection is made at 230 Volts. The system must be secured with 16 A. Then the air curtain must be adjusted with the help of the windmill.

The unit consists of:
- Nozzle with fans and control unit.
- Two stainless steel brackets
- Watertight proximity switch with cable and connector.
- Fixings for clamp mounting at a panel wall or alternatively fixing material for mounting at masonry.
- Windmill for functional testing.

1. The air curtains must be mounted at the warm side of the door. The unit must be centrally mounted above the door opening.

2. The unit must be pushed on the consoles with the blowers towards the door.


3. The proximity sensor turns the system on, when the door moves away from the switch. The sensor must be placed so, that the blowers of the air curtain start to run, when the door moves to open.

4. The nozzle must be adjusted so that the air flow meets the floor in front of the door at an angle of 5 to 10 degrees.

5. The air flow is to be set with the potentiometer so that it just reaches the ground. The speed must be kept low, because otherwise the airflow mixes with the cold room air and mist may occur.

6. The FRIGOVENT air curtain is optimally adjusted, when no outside air enters and when no cold air escapes.
To check this, the windmill must be set in front of the threshold of the door directly under the air flow of the air curtain.
When the system is switched off, you can see how the impeller of the windmill is turning moved by the escaping cold air.
If you switch on the air curtain and turn up the potentiometer you can see the impeller


  rotating more slowly until it finally stops. When the impeller stops, the nozzle and the air speed are correctly adjusted.

7. Don‘t install air curtains in combination with strip curtains or swing doors.

8. The nozzle of the air curtain should be about 10% wider than the door opening.