Model 4900 Curtain Type

PRODUCT DESCRIPTION

The Bullock Model 4900 Curtain Fire Dampers are 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.

 

Certified by the C.S.I.R.O. for these ratings, this model complies with AS1668.1-1998 and AS1682.1-1990.

 

FEATURES

  • Australian certified to AS1530.4-1997 by the C.S.I.R.O. in:
    • a) Masonry walls for 4 hours. Test #-FS-1472, FSV-0094
    • b) Concrete slabs for 4 hours. Test #-NF-08SV0343
    • c) Steel Stud Plasterboard partition for 2 hours. Test #-FS-1495
  • All galvanised steel construction
  • Single (UL33 rated) fusible link
  • Readily available sizes:
    • – wall type 100mm x 100mm up to 2400mm x 2400mm
    • – 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 also available on model 4900 Bullock Fire Dampers. Metal seals allow the damper to be installed instu with a 10mm controlled expansion gap (AS1682.2-1990). 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 100mm
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. Sized to be smaller than flange and grille
Minimum wall thickness 130mm
Minimum flange size “T”
(max W or H ÷ 100) + 10
Refer as 1682.2-1990. Appendix C

 

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
Minimum wall thickness 130mm
Minimum flange size “T”
(max W or H ÷ 100) + 10
Refer as 1682.2-1990. Appendix C

 

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 AS1682.1-1990 and AS1668.1-1998

 

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 Metal Expansion Gap Sealing System, complying with AS1682.2-1990 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 AS1851.6-1983 for detailed servicing procedures