13
TOP unit heaters
1.53
Unit heaters (2-stage three-phase motor/1-stage AC single-phase motor/continuously variable EC single-phase motor)
Installation and operating instructions
9
Electrical wiring
9.1
Safety information
The electrical wiring of this product requires technical
knowledge of electrical engineering. This knowledge, generally
learned in vocational training in one of the fields stated, is
not described separately here. Errors with the wiring can lead
to the unit being damaged! The manufacturer is not liable
for any damage to people and materials caused by the wrong
wiring and/or improper handling. Note the following safety
information before starting work on the controller and the TOP
unit heater:
Regularly check the unit heater's electrical equipment.
Immediately replace loose connections and faulty cables.
Disconnect the system and ensure that it cannot be
accidentally reconnected.
Only use the wiring diagrams enclosed to carry out the
electrical connection.
Only wire the unit in accordance with currently applicable
VDE and EN guidelines, as well as Technical Wiring
Regulations stipulated by the regional energy supply
companies.
Only connect the unit to fixed wiring.
The operator of the unit is responsible for the EMC
conformity of the entire system in accordance with the local
applicable standards.
EC fans
Electrical loading (>50 C) between the mains conductor and
protective conductor after switching off the mains power
supply when switching several fans in parallel.
Ensure that a contact safety device is fitted. The mains
connections and PE need to be shorted before working on
the electrics.
The terminals and connectors are still energised even when
the unit is switched off. Check whether the terminals and
connectors are de-energised with a two-pin voltage tester.
Only open the unit 5 minutes after all poles of the voltage
have been switched off.
The earth wire carries high leakage currents (depending on the
frequency, intermediate voltage and motor capacity). Therefore
check EN-compliant earthing under test conditions (EN 50 178,
art. 5.2.11). Hazardous voltage can occur at the motor housing
without earthing.
Summary of Contents for Lufterhitzer TOP Series
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