3.2.4 Mechanical Mounting
All IP20 enclosure sizes as well as IP21/ IP55 enclosure sizes except A2 and A3 allow side-by-side installation.
If the IP 21 Enclosure kit (130B1122 or 130B1123) is used on enclosure A2 or A3,, there must be a minimum of 2 in [50 mm] of clearance between
drives.
For optimal cooling conditions, allow a free air passage above and below the adjustable frequency drive. See table below.
Air passage for different enclosures
Enclo-
sure:
A2 A3 A5 B1 B2 B3 B4 C1 C2 C3 C4
a (mm): 100 100 100 200 200 200 200 200 225 200 225
b (mm): 100 100 100 200 200 200 200 200 225 200 225
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 adjustable frequency drive. Re-tighten all four screws.
Table 3.2: Mounting frame sizes A5, B1, B2, B3, B4, C1, C2, C3 and C4 on a non-solid back wall, the drive must be provided with a backplate A due to
insufficient cooling air over the heatsink.
For heavier drives (B4, C3, C4), use a lift. First wall-mount the 2 lower bolts, then lift the drive onto the lower bolts. Finally, fasten the drive against the
wall with the 2 top bolts.
VLT
®
HVAC Drive Instruction Manual 3 Mechanical Installation
MG.11.AB.22 - VLT
®
is a registered Danfoss trademark
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