7
Making electrical connec-
tions
General safety notes
DANGER!
Danger of electric shock! Do not touch any live com-
ponents! Electrical equipment carries a dangerous
electrical voltage.
–
Only skilled qualified electricians are allowed to
work on the electrical system.
–
Switch off the power supply before working on
any electrical equipment.
7.1 Equipotential bonding
If equipotential bonding is a requirement, there must be
an electrical earth connection from the fire damper to
the duct. In the event of a fire, mechanical loads from
the equipotential bonding must not affect the fire
damper.
Fire dampers with flange: The flange of the fire
damper is used for equipotential bonding; no drilled
holes are required in the damper casing.
Fire dampers without flange (circular): Suitable
clamps or similar parts may be used for equipoten-
tial bonding. It is possible to make drilled holes near
the spigot.
7.2 Connecting the spring return
actuator
Personnel:
Skilled qualified electrician
Fig. 6: Actuator connection, example
1
Switch for opening and closing, to be provided by
others
2
Optional release mechanism, e.g. TROX duct
smoke detector Type RM-O-3-D or RM-O-VS-D
3
Indicator light for CLOSED position, to be provided
by others
4
Indicator light for OPEN position, to be provided by
others
The fire damper may be equipped with a spring
return actuator for a supply voltage of 230 V AC or
24 V AC/DC. See the performance data on the
rating plate.
The spring return actuator must be connected
according to the wiring example shown. Several
actuators can be connected in parallel as long as
the performance specifications are taken into con-
sideration.
Connection boxes must be fixed to the adjoining
structure (wall or ceiling slab). They must not be
fixed to the fire damper.
Actuators with 24 V AC/DC
Safety transformers must be used. The connecting
cables are fitted with plugs. This ensures quick and
easy connection to the TROX AS-i bus system. For con-
nection to the terminals, shorten the connecting cable.
Making electrical connections
Connecting the spring return actuator
Tunnel fire damper Type FKT-EU
17
Содержание FKT-EU
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