9
Ultra
1.54
Comfortable indoor climate in high-end interiors
Installation and operating instructions
2. Safety information
Only allow a qualified electrician to perform installation, assembly and
maintenance work on electrical units in compliance with VDE guidelines. The
connection should comply with the applicable VDE regulations and provisions
laid down by the regional electricity providers.
Non-compliance with the regulations and operating instructions can result in the
units malfunctioning with consequential damage and danger to people. There is
a danger of fatal injury caused by wires being crossed due to incorrect wiring!
Regularly check the unit heater’s electrical equipment. Immediately replace loose
connections and faulty cables.
Disconnect all parts of the system from the mains power supply and prevent
them from being reconnected before starting any connection and maintenance
work!
EC fan
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.
In the event of a fault, electrical voltage will be produced at the rotor and
impeller. Rotor and impeller are base-insulated.
• Do not touch when fitted!
The fan runs when control voltage is applied or the stored fan speed starts up
automatically when mains power fails.
• Do not go near the hazard area of the unit.
High temperatures occur at the fan’s electronic housing.
• Combustion hazard.
The fan is protected from blockage. Protective functions are integrated
depending on the fan type, which cause the fan to switch off automatically in
the event of diverse faults.
• Please refer to the operating instructions for the respective fan for further
information!
Please read these instructions in full to ensure correct and proper installation and
the correct operation of Ultra unit heaters.
