8
1.53
TOP unit heaters
Unit heaters (2-stage three-phase motor/1-stage AC single-phase motor/continuously variable EC single-phase motor)
Installation and operating instructions
2.3 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 swapped 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 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.
Important:
Note the maximum flow temperatures to protect the fan!
Long periods of fan idleness with high water temperatures can
lead to impermissible heating of the fan motor. The flow
temperatures should therefore be limited depending on the use
and motor configuration.
Should a temperature limit not be possible or not be sensible for
the intended use, there is also an option of using appropriate
valves (thermoelectric, motorised or solenoid) to shut off the
heating medium.
This can interrupt the flow of medium before the fan is switched
off and the heat exchanger cools down. Appropriate fan
controllers with a fan run-on relay and connection terminals for
the motorised valve are available on request.
Max. flow temperatures*
Type of installation
Use
Motor design
Ceiling
Wall
without shut-off
valve
AC fan
100 °C
120 °C
EC fan
100 °C
120 °C
with shut-off valve
AC fan
200 °C
200 °C
EC fan
160 °C
160 °C
* Fan models and operation for higher temperatures on request.
Summary of Contents for Lufterhitzer TOP Series
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