Fire Door Technical Information

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Fire Door Technical Information PDF

 

Technical Data

Available in a selection of variants, Nico fire door hinges meet a broad range of performance requirements, including Certifire approval.

Where on-site removal of the door is necessary, there are a choice of 5 hinge patterns each offering individual installation and performance characteristics. For more secure applications, the 4815 and 4817 fixed pin hinges with dual bearings are available – with radius corners for machine preparation or square corners for on-site installation.

Incorporating low-friction bearings to assist in the ease of door operation, Loadpro is the recommended choice for high efficiency specifications where conformity with the door opening resistance criteria of DDA (Disability Discrimination Act) is paramount.

Nico’s range of steel and stainless steel hinges can also be used for fire resistance applications with adjusted door weights of 60 to 120kg. While requiring periodic lubrication to maintain maximum efficiency, the hinges offer a low cost solution to minimum fire door requirements, making them ideal for domestic, social housing and light commercial projects.

Hinge Selection

To assist in the correct hinge selection for a particular application, the tables and diagrams show recommended hinge positioning for optimum performance, as well as indicating the variables which should be applied to actual door dimensions when selecting hinges for extra high or wide doors, or when used in conjunction with standard or back-check door closers.

  • Determine weight of the door including hardware
  • Make adjustment for width of door (see Table 1)
  • Make adjustment for type of door closer (see Table 2)
  • Calculate adjusted weight; select hinge (see Table 3)

Intumescent Selection

All fire tests on Nico hinges were carried out using ‘Interdens’ intumescent pads, which are made from mono ammonium phosphate in a glass fibre carrier.

To comply with the fire test certification all Nico fire hinges should be fitted with the same amount and type of intumescent material that was used during fire testing. As detailed below.

Using a different type or thickness of intumescent material than that used during testing could invalidate the test evidence for that hinge and therefore potentially the whole doorset.

Table 1
Door Height Door Width Adjustment
2000mm Up to 1000mm None
2000mm Up to 1050mm +10%
2000mm Up to 1100mm +18%
2000mm Up to 1150mm +26%
2000mm Up to 1200mm +33%
2000mm Up to 1250mm +40%
Table 2
Closer Adjustment
Standard Closer Fitted +20%
Back-Check Closer Fitted +75%
Table 3
Hinge Grade Max. Adjusted Door
Weight: 3 Hinges
4513 10 60kg
4710 10 60kg
4715 11 80kg
4717 12 100kg
4720 13 120kg
4815 Mild Steel 12 100kg
4815 Stainless 13 120kg
4817 Mild Steel 13 120kg
4817 Stainless 13 120kg
4915 11 80kg
5315 13 120kg
Hinge Intumescent Requirements
Hinge intumescent requirement for use with 30 minute timber based doorsets
Model Sizes Intumescent Protection Required
4513 89mm x 89mm x 2.6mm 1mm Interdens
4515 101mm x 73mm x 2.6mm 1mm Interdens
4535 101mm x 73mm x 2.6mm 1mm Interdens
4542 101mm x 90mm x 2.6mm 1mm Interdens
4710 85mm x 76mm x 2.6mm 1mm Interdens
4715 98mm x 84mm x 2.6mm 1mm Interdens
4717 98mm x 84mm x 3mm 1mm Interdens
4718 98mm x 84mm x 3mm 1mm Interdens
4815 102mm x 89mm x 3mm 1mm Interdens
4815R 102mm x 89mm x 3mm 1mm Interdens
4817 107mm x 77mm x 3mm 1mm Interdens
5315 102mm x 76mm x 3mm 1mm Interdens
Hinge intumescent requirement for use with 60 minute timber based doorsets
Model Sizes Intumescent Protection Required
4515 101mm x 73mm x 2.6mm 1mm Interdens
4535 101mm x 73mm x 2.6mm 1mm Interdens
4542 101mm x 90mm x 2.6mm 1mm Interdens
4715 98mm x 84mm x 2.6mm 1mm Interdens
4720 110mm x 98mm x 3mm 1mm Interdens
4722 110mm x 98mm x 3mm 1mm Interdens
4815 102mm x 89mm x 3mm 1mm Interdens
4817 107mm x 77mm x 3mm 1mm Interdens
5315 102mm x 76mm x 3mm 2mm Interdens
Hinge intumescent requirement for use with 120 minute timber based doorsets
Model Sizes Intumescent Protection Required
5315 102mm x 76mm x 3mm N/A