Trox Technik FKRS-EU, Инструкция по установке и эксплуатации

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4.3 FKRS-EU with spring return
actuator and duct smoke detector
Fig. 7: FKRS-EU with spring return actuator and duct
smoke detector
1.1 Casing
1.2 Damper blade with seal
1.4 Travel stop for CLOSED position
1.5 Inspection access (12 mm)
1.8 Lip seal
9.2 Rectangular duct, by others
10.1 Spring return actuator
10.12 Duct smoke detector RM-O-3-D
(Fastening in the rectangular duct)
10.13 Thermoelectric release mechanism with temper-
ature sensor
Functional description
If the duct smoke detector detects smoke, the spring
return actuator closes the damper blade. This prevents
smoke from being transferred via ductwork into adjacent
fire compartments even before it reaches a temperature
that would trigger the thermoelectric release mecha-
nism.
As long as power is supplied to the actuator, the damper
blade remains open. The spring return actuator closes
the fire damper when one of the following events occur:

The duct smoke detector detects smoke

Temperature in the fire damper > 72 °C

Ambient temperature outside the release mecha-
nism > 72 °C

The power supply is interrupted (power off to close)

The duct smoke detector must be installed in a rec-
tangular duct at the top by the others, see Fig. 8.
Fig. 8: FKRS-EU with spring return actuator and duct
smoke detector in a rectangular duct
1 FKRS-EU
9.2 Rectangular duct, by others
10.12 Duct smoke detector

Alternatively, the duct smoke detector must be
arranged in a circular duct, by others, in a T-piece at
the top, see Fig. 9.
Fig. 9: FKRS-EU with spring return actuator and duct
smoke detector in a circular duct
1 FKRS-EU
9.15 T-piece or saddle connector, by others
10.12 Duct smoke detector
Parts and function
FKRS-EU with spring return actuator and duct smo...
Fire damper Type FKRS-EU 16