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EIOM v2018.04
11. ACCESSORIES
11.1 FAN SAFETY SWITCH
Safety switches are designed to be mounted near a motor to isolate it from the main circuit. They prevent accidental starting of electrical motor
during maintenance or repair work. When safety switch in “OFF“ position, it can be locked with a lock.
Figure 11.1.1 – Safety switch:
(1) – Metric threaded knockouts; (2) – Knockout in the back of the box; (3) – Option for auxiliary contacts (NO/NC); (4) – Handle, axis and switch
insert is one system factory assembled; (5) – Knockout for ventilation, water drain holes; (6) – IP54 cable glands sealing plugs included; (7) –
Cable strip length; (8) – Terminals for 5-wire system: three N + PE terminals; (9) – Handle padlockable in “O” position as standard.
Knockout for padlock in “I” position; (10) – Isolated neutral terminal with separated in/out connection.
NOTE: For more information, instalation and cable connection refer to safety switch technical specification.
11.2 SECTION LIGHTING
8W LED bulb lamp lighting optionally can be installed inside some sections (e.g. fans, filters). Lighting switch installed outside the section.
Figure 11.2.1 – Lighting: (1) – Lighting, (2) – Switch.
11.3 TEMPERATURE SENSORS (WITH INTEGRATED CONTROL SYSTEM)
Air handling units (only with integrated control system) are equipped with air temperature sensors.
Fresh air, extract air and exhaust air temperature sensors mounted inside unit.
Supply air temperature sensor mounted outside AHU with additional cable length (3m or 6m). During AHU installation supply air temperature sen
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sor must be mounted in supply air duct as far as it is possible from heating elements (water, electric, gas heater). As a consequence, supplied air
temperature to the premises is more accurate.
Air temperature sensor can be easy replaced in case of damage or failure.
Press connection terminals. Pull out sensor cable. Press connection terminals while inserting new temperature sensor cable.
Figure 11.3.1 – Replacing air temperature sensor:
(1) – Air temperature sensor; (2) – Sensor cable; (3) – Connection terminals;
11.4 DUCT SMOKE DETECTOR (WITH INTEGRATED CONTROL SYSTEM)
Possible spreading of fire between air handling unit and rooms through ducts must be prevented by control system using appropriate protection
