Delta RMC70 - Manual (Page 5)

Step 2: Mounting
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Step 2: Mounting
The RMC should be mounted upright on a vertical surface, such that
the ventilation holes are on the top and bottom.
Mounting Options
Symmetrical DIN 3 Panel-mount
See Appendix B: Mounting Dimensions for dimensions
Clearance
The amount of clearance above and below depends on the maximum
ambient temperature:
Ambient Temperature Clearance
122 - 140°F (50 - 60°C) 3 in. (7.6 cm)
86 - 122°F (30 - 50°C) 2 in. (5.1 cm)
Less than 86°F (30°C) 1 in. (2.5 cm)
Grounding
Make sure to properly ground the RMC. If mounted on a DIN rail, the
RMC will conduct to the DIN rail. The RMC shell is electrically
connected to its Case pins.