Mitsubishi Electric FR-A820-00046 Instruction Manual page 47

Installation and wiring
● For heat dissipation and maintenance, keep clearance between the inverter and the other devices
or enclosure surface. The clearance below the inverter is required as a wiring space, and the
clearance above the inverter is required as a heat dissipation space.
Allow clearance
Fig. 2-12:
For the FR-A820-00250(3.7K) or lower and FR-A840-00126(3.7K) or lower, allow 1 cm or more
clearance.
When using the FR-A820-01250(22K) or lower and FR-A840-00620(22K) or lower at the surround-
ing air temperature of 40 °C or less (30 °C or less for the SLD rated inverter), side-by-side installation
(0 cm clearance) is available.
For replacing the cooling fan of the FR-A840-04320(160K) or higher, 30 cm of space is necessary
in front of the inverter. Refer to page 7-7 for fan replacement.
Installation orientation of the inverter
Install the inverter on a wall as specified. Do not mount it horizontally or any other way.
Above the inverter
Heat is blown up from inside the inverter by the small fan built in the unit. Any equipment placed
above the inverter should be heat resistant.
FR-A800
FR-A820-03160(55K) or lower,
FR-A840-01800(55K) or lower
≥ 5 cm
Vertical
Clearances
Installation of the inverter and enclosure design
Clearances (front)
FR-A820-03800(75K) or higher,
FR-A840-02160(75K) or higher
≥ 20 cm
≥ 10 cm
≥ 5 cm ≥ 10 cm ≥ 10 cm
≥ 20 cm
≥ 10 cm
Clearances (side)
≥
5 cm
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