SystemAir PKI-C EI120S, Manual, Page: 38 / 63

2
General
PVM Partition Fire Dampers are used as a fire shut- off
element, which connects two two adjacent fire areas
without connecting duct.
Fire Air Grille is tightly installed into the dividing fire
construction. In case of fire, blades of the grille close
the openings and stop the fire from spreading to other
fire area. Grilles IMOS- PVM Partition Fire Dampers are manu-
factured from fire resistant material (D1) based on STN
73 0852, tested according to STN EN 1634-1:2001 and
classified according to STN EN 13501-2:2005 as
EI
1
90, El
2
120, E120 and EW60 and manufactured with
servomotor El
1
60, El
2
120, E120 and EW60.
Construction Features
1. Frame
2. Dividing insulating blades
3. Closing mechanism with spring
4a. Fusible link
4b. Actuator driven with thermal link cut-off switch
5.
Protecting grille
6. Protecting box of mechanism
7. Active fire sealing
Figure 1- PVM
Figure 2- Grille PVM with Actuator
Material Final Manufacture
The frame1 of the grille is made of zinc-plated con-
struction steel. Blades 2 which rotation axis is horizon-
tal are placed in the frame. Dividing insulating blades
are made of calcium silicate sheets. Blades are closing
contradictory with help of closing mechanism 3(shifter
and spring) or servo drive and spring 3+4b. Blades are
maintained in open position by fusible link until the air
temperature reaches above 72
o
C.
When PVM units are Actuator driven, blades are main-
tained in open position with the motor itself.The
damper mechanism is driven to closed position by the
actuator when the air temperature exceeds 72
o
C.
Protection grille 5 prevents the contact with surface of
the blades that have higher temperature when fire.At
the same time, protecting grille forms air space be-
tween the blades and the grille where the air flows and
cools down the surface of blades. Protection grilles are
delivered painted as standard with powder RAL 9007
Protecting box 6 stops the heat to get through closing
mechanism. Intumescent self expanding seals 7 fill the
spaces between the frame and blades and between the
blades themselves by changing their volume, which is
caused by the heat.
The present technical specifications define sizes, properties, scope of utility and manufacture of fire partition
dampers.The specifications apply to the design, ordering, production, acceptance and use of these products from
June 1st, 2006.