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Siemens servomotor:
GRA326, GNA326, GGA326.
Motorized fire dampers electical wiring
To connect the dampers to the power supply, proceed as follows:
• Check that the voltage and electrical frequency are equivalent to
those of the motor of the servomotor (check the motor's informa-
tion label);
• Make the connections as shown in the below diagram.
Microswitches position for motorized version
1 Negative (DC) or neutral (AC)
2 Positive (DC) or phase (AC)
3 Phase
4 Neutral
S1 Common closed damper microswitch
S2 Normally closed, closed damper microswitch
S3 Normally opened, closed damper microswitch
S4 Common open damper microswitch
S5 Normally closed, open damper microswitch
S6 Normally opened, open damper microswitch
Electrical specifications
Manual and compact manual
Manual with magnet
Belimo motorized version
Siemens motorized version
Voltage and power consumption
-
Magnet (WKS25MR/MI):
24/48 V DC (automatic voltage switching
on S0-25 electric board for 24V magnet)
Power interrruption magnet (MR):
P = 1,6 W
Power input magnet (MI):
P = 3,4 W
Motor 24V AC/DC (WKS25VSB):
Belimo BFL24T
Opening: 2,5 W
In stand-by: 0,8 W
230V AC motor (WKS25DSB):
Belimo BFL230T:
Opening: 3,5 W
In stand-by: 1,1 W
Motor 24V AC/DC (WKS25VSS):
Siemens GRA126
Opening: 3,5 W
In stand-by: 2 W
Motor 230V AC (WKS25VSS)
Siemens GRA326
Opening: 4,5 W
In stand-by: 3,5 W
Microswitches position contacts
Manual control version:
12VDC / 2A
125VAC / 0,1A
Motorized version:
Siemens: AC 24V…230V / 6 (2)A
Belimo: DC 5V…AC 250V / 1mA…3A (0,5A)
Blade closing time
Spring: 1 s
motor: < 30 s
Protection degree
IP42
IP42 MAGNETIC VERSION
IP54 MOTORIZED VERSION
MAINTENANCE AND INSPEC TIONS
Fire dampers and control mechanisms do not require routine main-
tenance.
Extraordinary maintenance (repairs) and periodic inspection opera-
tions are the responsibility of the ventilation system operator.
The implementation of a periodic inspection plan allows to guaran-
tee the efficiency and functionality of the fire dampers for the fire
safety of the building.
Periodic inspection and cleaning
Periodic inspection shall be performed in accordance with the re-
quirements of the law or by the building regulations or other local
regulations.
In the absence of specific regulations (or to their complement), in ac-
cordance with point 8.3 of the EN 1560 standard, it is recommended
to carry out the following control activities at intervals of no more
than 6 months:
• If the damper is connected to a remote control or command sys-
tem (eg BMS or alarm or fire detection), that responds correctly to
commands by performing at least one opening and closing test
