Danfoss VLT HVAC Drive FC 100 Series Design Manual page 77

®
VLT HVAC Drive Design Guide
5.1.3. Mechanical mounting
All IP20 enclosure sizes as well as IP21/ IP55 enclosures sizes except A2 and A3 allow side-by-side installation.
If the IP 21 Enclosure Kit is used on enclosure A2 or A3, there must be a clearance between the drives of min. 50 mm.
For optimal cooling conditions allow a free air passage above and below the frequency converter. See table below.
1. Drill holes in accordance with the measurements given.
2. You must provide screws suitable for the surface on which you want to mount the frequency converter. Retighten all four screws.
Table 5.1: When mounting enclosure sizes A5, B1, B2, B3, B4, C1, C2, C3 and C4 on a non-solid back wall, the drive must be provided with a back plate
A due to insufficient cooling air over the heat sink.
Air passage for different enclosures
Enclo-
A2 A3 A5
sure:
a (mm): 100 100 100 200
b (mm): 100 100 100 200
MG.11.B7.02 - VLT ® is a registered Danfoss trademark
B1 B2 B3 B4 C1
200 200 200 200
200 200 200 200
5. How to Install
C2 C3 C4
5
225 200 225
225 200 225
77