Installation Best Practices for CFS-CID MD

ManualsBrandsHilti ManualsFirestop & Fire ProtectionCFS-CID M Cast-in firestop sleeve

Installation Best Practices for Hilti CFS-CID MD

CFS CID MD is a one-step firestop cast-in sleeve for plastic and metal pipe penetrations through

concrete over metal deck slabs. Should a specific installation situation deviate from the 3

party listing

please reach out to the Hilti Fire Protection Engineering team to see if an engineering judgement is

possible.

CONTENTS

• Platform (CFS-CID MD PLT W3” & W2”) Installation Best Practices.

• Sleeve (CFS-CID MD) Installation Best Practices.

• Guide Sleeve (CFS-CID MD GUI) Installation Best Practices.

• Hole Saw (CFS-CID MD HS) Instructions Best Practices.

TECHNICAL SUPPORT

There will always be situations when a current UL-listed system doesn’t accommodate your application.

When that happens, bring your questions to the Hilti firestop experts.

To request an Engineering Judgment, please download the Engineering Judgment Request Form at:

https://www.hilti.com/. Once you have saved the completed file, please send the completed EJ request

form to: usfirestopeng@hilti.com.

Summary of content (8 pages)

PAGE 1
Installation Best Practices for Hilti CFS-CID MD CFS CID MD is a one-step firestop cast-in sleeve for plastic and metal pipe penetrations through concrete over metal deck slabs. Should a specific installation situation deviate from the 3rd party listing please reach out to the Hilti Fire Protection Engineering team to see if an engineering judgement is possible. CONTENTS • Platform (CFS-CID MD PLT W3” & W2”) Installation Best Practices. • Sleeve (CFS-CID MD) Installation Best Practices.
PAGE 2
Platform (CFS-CID MD PLT W3” & W2”) Installation and Best Practices • Ensure the correct platform (CFS-CID MD PLT) is being selected per the project metal deck details. • The platform must be installed so the foam insert can properly seat inside of the top flute joint. By laying out the platform as explained above, this platform reduces or eliminates the chance of concrete getting in the top flute joint, thereby protecting the sleeve above.
PAGE 3
• • • When placing platforms, do not slide into position, as this can lead to damaging the foam seal leading to concrete intrusion. Instead place the platforms straight down and pressing into place. Best option for fastening the Platform is to use one ¾” screw on each corner to ensure the platform is flat with no gaps underneath. When running multiple platforms together seal any open seams to minimize risk of concrete intrusions.
PAGE 4
Sleeve (CFS-CID MD) Installation Best Practices • Best option for fastening the sleeve is to use one ¾” screw on each corner to avoid any gaps underneath. Ensure that sleeves are not sitting on top of screw used to secure the platform. • When a device falls directly on an upper flute, it is highly recommended to still use a platform to avoid any concrete intrusion underneath the sleeve base.
PAGE 5
• It is recommended to perform a walk-through inspection of installed sleeves to verify that no gaps can be found. If any are found PU foam or tape can be used to fill the void and prevent concrete intrusion. • Avoid placing a sleeve on top of the seams between two different platforms. This will result in having to cut through extra metal increasing overall cutting time and reducing hole saw lifetime.
PAGE 6
Guide Sleeve (CFS-CID MD GUI) Installation Best Practices • Make sure to select the guide sleeve diameter corresponding to the sleeve diameter. • Push the guide sleeve all the way down to prevent any damage on the firestop inlay and the smoke gasket. This will also better prevent the guide sleeve from spinning during cutting. • If guide sleeve becomes warped or chipped it must be replaced. • For Thicker Concrete Slabs 12” and 18” long guide sleeves are available, contact your local Hilti rep.
PAGE 7
Hole Saw (CFS-CID MD HS) Installation Best Practices • Prior to Cutting remove all debris from sleeve that could damage the carbides and dramatically reduce the lifetime of the hole saw. • Ensure hole saw is flat with cutting surface before starting. • Once platform has been cut through, take the hole saw out and remove the cut piece before moving forward with deck cutting. Once drilling of metal deck is completed remove hole saw, then guide sleeve.
PAGE 8
• • Tool should be 90 degrees to the slab. Do not add pressure on the tool, the tool will do the job. In case the Guide Sleeve would start spinning secure the guide sleeve lips to keep it still. • Letting the tool and hole saw do the job will make the cutting process smoother and faster. Applying to high of pressure will lead to premature tooth fractures, teeth flaring, and excess heat generation can burn the hole saw. • Jobsite condition and installer experience will influence drilling time.