User Manual

4. Commissioning
MF0150A9A Manual for ION-M23 SDARS
Page 19
6. Notice: A spacing of 40 mm (1.58 inch) around the unit is required.
7. Notice: To ensure sufficient airflow when mounting the unit in enclosed spaces,
two lid openings (one for the air inlet and the other for the air outlet) must be
provided. Do not block these air inlets and outlets when mounting the Remote
Unit. The size of each opening must equal at least 16 x 16 cm (>250 cm
2
).
Ensure that there is no thermal short circuit between the air inlet and air outlet.
Make sure free airflow is not deflected or otherwise obstructed.
8. Notice: Depending on the installation type (wall or pole), the corresponding
mounting kits must be ordered from the manufacturer. If any different or
additional mounting material is used, ensure that the mounting remains as safe
as the mounting designed by the manufacturer. The specifications for stationary
use of the Remote Unit must not be exceeded. Ensure that the static and
dynamic strengths are adequate for the environmental conditions of the site. The
mounting itself must not vibrate, swing or move in any way that might cause
damage to the Remote Unit.
9. Notice: To avoid damage when mounting the unit, always make sure that the M8
washers (DIN9021 or DIN125 depending on the mounting kit) are placed behind
and in front of the mounting drillings of the unit.
Specified torques have to be observed for certain mounting procedures according to
the following table:
Type
Tallow-drop
screws
Hex
nuts
Spacing
bolts
PG
(plastic)
PG
(aluminium)
Thread
M 4
M 8
M 4
M 8
PG 13.5
PG 29
Specified torques
3.3 Nm
27 Nm
2.3 Nm
27 Nm
3.75 Nm
10 Nm
table 4-1 Specified torques
The mounting procedures for a stand-alone Remote Unit without optional
accessories are described and illustrated in the following sections. For further
information regarding special mounting procedures including mounting of accessory
equipment, please see separate manual.