Fusible Link Door Closer

Style 8 links are commonly used on fire doors smoke and heat vents and ducts.

Fusible link door closer.

The heat from a fire will melt the fusible link which releases the spring loaded clamp assembly relieving pressure on the friction joint and permitting the door closer to close the door. Nortonuses two types of mechanical hold open. Suitable for interior door widths 54 to 60. Style 6 and 7 links are often used on fire doors windows hatches dampers and blowers.

Closer mounts parallel arm specify right or left swinging door. The ul listing number is for the fusible link arms is r1943. Fusible link closer arms incorporate a link made from pieces of metal held together by solder that is designed to melt when it reaches a certain temperature releasing the hold open and allowing the door closer to close the door. Suitable for exterior door widths 42 to 48.

Lcn door closer fusible links. 4 7 4 2 unless otherwise acceptable to the ahj heat detectors or fusible links shall be installed on both sides of the wall interconnected so that the operation of any single detector or fusible link causes the door to close. Lcn 4110 fusible link door closer 385 00. Style 1 5 links are for use on fire doors windows and lids.

The 4110 and the 4020 series can be templated for 100 140 or 180. If you have a building were you have a high traffic and abusive especially exterior doors then this is the closer. The 4010 series can be templated for 100 or 140. 4110fl add to cart add to compare lcn 4020 fusible link door closer 385 00.

4020fl add to cart add to compare lcn 4010 fusible link door closer. 4 7 4 3 where fusible links are used one fusible link shall be located near the top of the opening and. They all use the same fusible link arm. Tested over ten million cycles.

Fusible link is not recognized by nfpa therefore norton does not offer this type arm. The second on our list of lcn fusible link closers is the lcn door closer 4020 fl. The fusible link is a lead clip that melts at roughly 115 degrees and releases the door so it can close and contain a fire. The lcn fusible link arm that is included with the 4010 fl closer has a link that will melt at 120 degrees.

The automatic closing device is a device that causes the door to close when activated by a fusible link or detector. In the days before hold open devices on fire doors and smoke doors were actuated by smoke detectors fusible link closer arms were often used to hold open doors that were required to close if a fire occurred. Although nfpa does allow fusible links they are not the most effective and reliable method to ensure your fire doors close in case of a fire. Style 9 links are good for range hood applications.

Use links in straight pull applications only. The 4020 fl closer has the same color and hand options as the 4010 fl and will be shipped with the same parts. Fusible link door closers and arms. Double heat treated steel pinion.

This will close the door but note that the door can still be closed manually when necessary.