Model 4900 Curtain Type

PRODUCT DESCRIPTION

The Bullock Model 4900 Curtain Fire Dampers is installed to protect airconditioning and ventilation penetrations through fire rated walls or slabs.

 

This model damper has been tested for 4 hours in a masonry wall and concrete slab and 2 hours in a steel stud plasterboard wall.

 

 

FEATURES

  • Australian certified to AS1530.4-1997 by the C.S.I.R.O. in:
    • a) Masonry walls for 4 hours. Sponsored investigation FSV-0094
    • b) Concrete slabs for 4 hours. Sponsored investigation no. 1864
    • c) Steel Stud Plasterboard partition for 2 hours. See Wall manufacturers instructions
  • All galvanised steel construction
  • Single (UL33 rated) fusible link
  • Readily available sizes:
    • – wall type 150mm x 150mm up to 4800mm x 4800mm
    • – slab type 150mm x 150mm up to 750mm x 750mm (contains 2 x 301 S/S conforce springs)
  • Optional TDF/TDC type flanges available for 1 x leakage/breakaway point
    Low melting point bolts to be used.)
  • Optional patented Bullock metal expansion gap seals available for a factory set 10mm expansion gap

PATENTED BULLOCK METAL EXPANSION GAP SEALS

Optional patented Bullock metal expansion gap seals are standard on model 4900 Bullock Curtain Type Fire Dampers. Metal spacers allow the damper to be installed instu with a 10mm controlled expansion gap (AS1682.2-2015). This means no installation or inspection costs plus the elimination of health harardous fibres. (Aust. Patent #-624288)

 

 

MODELS AVAILABLE

STYLE D
DUCT – TO – DUCT

 

Order should be read as follows:
Width (blade length) x Height x Wall thickness
Minimum wall thickness 80mm
*Channel width may increase with small walls
Flange sizes are as follows:
Sizes under 1200 x 1200 = 30mm
Sizes over 1200 x 1200 = 50mm

 

STYLE GR
GRILLE – TO – DUCT

 

Order should be read as follows:
Width (blade length) x Height x Wall thickness x Depth of recess
for grille x Flange.
*Channel width may increase with small walls
Minimum flange size “T”
(max W or H ÷ 100) + 10
Refer as 1682.2-2012

 

STYLE GS
DUCT – TO – GRILLE

 

Order should be read as follows:
Width (blade length) x Height x Wall thickness x Depth of recess
for grille x Flange. Sized to be smaller than flange and grille
*Channel width may increase with small walls
Minimum flange size “T”
(max W or H ÷ 100) + 10
Refer as 1682.2-2012

 

TYPICAL SPECIFICATION

Openings in fire rated walls or slabs shall be protected by a Bullock Model 4900 Curtain Fire Damper or approved equivalent. Dampers shall be provided where shown on drawings and wherever required to meet local regulations and must comply with AS1682.1-2015.

 

Dampers shall be installed in strict accordance with the manufacturer’s installation instructions, to comply with the certificates of test furnished by the manufacturer.

 

The damper’s construction must be in compliance with the tested prototype. The body being made with galvanised steel with any welds coated with cold zinc primer type paint to prevent rusting. The damper body must be strong and rigid to prevent operational damage during transport and/or installation on site.

 

The damper’s expansion gap must be constantly maintained with the use of the patented Bullock’s Metal Gap Spacer sealing system, complying with AS1682.2-2015 or and approved equivalent. Fusible link are to operate at 68°C or have an AS1890 rating.

 

INSTALLATION

Compliance with installation instructions is critical. Refer to separate wall type/slab type installation instructions to suit your requirements.

 

MAINTENANCE

This model requires little maintenance once install. Refer to AS1851-2012 for detailed servicing procedures.