Air Ducting Guidelines - Danfoss VACON 1000 Operating Manual

VACON® 1000
Operating Guide
Make sure that the hot air goes out of the cabinet and does not come back into the cabinet. There must be free space above the
cabinet without obstacles that can stop the airflow. Some free space in front of the cabinet is also necessary to be able to open the
cabinet doors and for maintenance.
• The back side of the cabinet can be placed against a wall.
• The distance between the cabinet front and walls ≥1500 mm.
• The distance between the cabinet fan cover top and ceiling:
- ≥400 mm for non-ducted drives.
- ≥1000 mm for ducted drives.
The power loss of the AC drive can change significantly, when the load, the output frequency or the switching frequency changes. It
is useful to know the power loss, when planning the cooling equipment in an electrical room.
To calculate the power loss, use the ecoSmart tool. See http://ecosmart.danfoss.com/#/app/intro.

5.5.1 Air Ducting Guidelines

Air ducts can be used to direct the warm outlet air from the VACON® 1000 out from the electrical room.
Guidelines for using an air duct:
• The outlet area of the air duct must be larger than the sum of the cabinet fan outlet areas.
• The air inlet area of the cabinet location must be larger than 1.2–1.5 times the sum of the fan outlet areas. The air inlet must
have a primary air filter.
• The outlet of the air duct must be waterproof to prevent water entering the air duct.
• The recommended maximum length of the air duct is 3 m. For longer air ducts, support brackets and an induced draft fan are
required.
46 | Danfoss A/S © 2021.06
Mechanical Installation
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