Description
TYCO
DHM 69
DECKHEAD MOUNTING ASSEMBLY
PART NO: 517-001-231
SC NO: 121-003-247
The Tyco DHM 69 Deckhead Mounting Assembly is a structural installation component designed to secure fire detection devices to overhead surfaces within marine fire alarm systems. Intended for deckhead-level fitting, this mounting assembly provides a reliable and stable interface between detection equipment and the vessel’s overhead structure, ensuring correct sensor positioning and consistent system performance. Proper mounting of fire detection components is a fundamental requirement of shipboard fire safety arrangements, and a purpose-designed assembly such as this helps maintain detector alignment, contact integrity, and long-term operational reliability in demanding marine environments.
Key Features
✓ Purpose-built deckhead mounting solution designed to support fire detection devices in overhead installation configurations typical of marine fire alarm systems.
✓ Specific technical parameters such as dimensions, load ratings, and material specifications are subject to confirmation against the original Tyco product documentation for part number 517-001-231.
✓ Designed for compatibility within Tyco fire alarm system configurations; suitability for specific panels or controllers should be verified against the vessel’s existing system layout.
✓ Suitable for installation in typical shipboard enclosed spaces where deckhead-mounted detection is required; installation conditions and area classification should be confirmed prior to fitting.
✓ As a direct replacement or service component, this assembly supports ongoing maintenance of fire detection infrastructure, helping vessels sustain compliant and functional fire alarm arrangements.
Marine Applications
✓ Accommodation and cabin spaces aboard passenger vessels, ferries, and cruise ships where overhead fire detection mounting is required.
✓ Machinery spaces, control rooms, and engine room auxiliary areas on cargo vessels, tankers, and offshore support vessels.
✓ Wheelhouses, navigation bridges, and service corridors requiring deckhead-mounted detector installations as part of an integrated fire alarm network.
✓ Onboard retrofit and upgrade projects where existing Tyco fire alarm systems require replacement mounting hardware for detector refurbishment.
✓ Newbuild vessel outfitting where Tyco fire alarm systems are specified and deckhead mounting assemblies are required across multiple zones or decks.
Why Marine Engineers Choose
The Tyco DHM 69 Deckhead Mounting Assembly is a recognised component within the Tyco fire detection range, valued by marine engineers and vessel operators for its straightforward installation, system compatibility, and contribution to maintaining reliable fire alarm arrangements across a wide range of vessel types.
Ideal For
Cargo vessels, bulk carriers, tankers, passenger ships, ferries, offshore platforms, naval auxiliaries, and any commercial vessel operating a Tyco-based marine fire alarm system requiring deckhead-mounted detector support hardware.
Technical Support
Technical support is available for this fire alarm system component, covering onboard installation guidance, maintenance procedures, and remote troubleshooting. Contact our team for assistance with integration into your vessel’s existing Tyco fire alarm arrangement.




