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Installation option for the enclosure heaters<br />
The device is attached vertically, i.e. with the connection<br />
cable pointing downwards. The connection cable should be<br />
tightly secured. In order to create the required convection, a<br />
distance of at least 50 mm from components must be maintained<br />
above and below the device. The thermal safety clearance<br />
from neighbouring components is at least 35 mm. Provided<br />
these clearances are adhered to, an ambient<br />
temperature of 65 °C will not be exceeded.<br />
Installation versions:<br />
1 Direct screw-fastening to the mounting plate<br />
(screw-fastened from the rear through the mounting plate)<br />
2 Direct snap-mounting onto the C rail<br />
This facilitates easier, faster mounting.<br />
Electrical connection<br />
Due to the particular characteristics of the PTC thermal element,<br />
the startup current is approx. 1.8 A for around 0.5 sec.<br />
A slow pre-fuse (gL) is therefore essential.<br />
<strong>Rittal</strong> <strong>System</strong> <strong>Climate</strong> <strong>Control</strong><br />
Enclosure heaters<br />
Assembly / electrical connection<br />
1 2<br />
25<br />
<strong>–</strong> 5<br />
According to IEC 6100-4-5, a fuse is to be provided by the<br />
customer for pulse loads in excess of 1000 V. The surface<br />
temperature of the aluminium section is regulated<br />
automatically. A separate thermostat (<strong>SK</strong> 3110.000)<br />
should be connected to control the room temperature. To<br />
control the air humidity inside the enclosure, a hygrostat<br />
(<strong>SK</strong> 3118.000) may be connected upstream.<br />
71<br />
9.2
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