Siemens FDBZ-WT Weatherproof Detector Enclosure P/N:S54319-B26-A1

The Siemens FDBZ-WT is a weather-tight protective enclosure designed for compatible Siemens air duct detector housings. It provides added protection in wet, humid, and weather-exposed fire alarm installations.

The enclosure features durable construction, a front-access cover, and a keyed lock. It allows an approved duct housing to mount securely inside the enclosure while maintaining access for inspection and maintenance. This product is intended exclusively for commercial fire alarm installations.

Product Functions

• Protects compatible air duct detector housings
• Supports wet and high-humidity installations
• Helps shield installed equipment from falling rain and ice
• Provides secure front-cover access
• Supports direct mounting to HVAC ductwork
• Allows access for inspection and maintenance

Electrical & System Information

The FDBZ-WT is a protective mechanical enclosure and does not perform smoke detection independently. A compatible Siemens air duct detector housing, detector, sampling tube, and fire alarm system components are required for a complete installation.

Electrical ratings depend on the duct detector housing and detector installed inside the enclosure.

Features

• Weather-tight duct housing enclosure
• NEMA 4X protection rating
• UL 50 and CSA-rated construction
• Key-lock front cover
• Reinforced stainless-steel enclosure
• Indoor wet and high-humidity application
• Compatible with selected Siemens and Faraday duct housings
• Fire alarm system accessory

Mounting & Design

The FDBZ-WT mounts directly to compatible HVAC ductwork. The installer aligns the enclosure with the sampling-tube and outlet-tube openings, secures it to the duct, and mounts the compatible air duct detector housing on the internal studs.

The front cover provides access to the installed duct housing and is secured with a key lock. Installation must follow Siemens instructions, local codes, and authority requirements.

Protection & Applications

Suitable for:

• Mechanical Rooms
• Commercial HVAC Systems
• Warehouses
• Manufacturing Facilities
• Parking Structures
• High-Humidity Areas
• Wet Indoor Locations
• Weather-Exposed Installations

Compatibility

Compatible with selected air duct detector housings, including:

• Siemens AD2-P
• Siemens AD2-PR
• Siemens AD2-XLR
• Siemens AD2-4W
• Siemens FDBZ492
• Siemens FDBZ492-R
• Siemens FDBZ492-HR
• Siemens FDBZ492-PR
• Faraday 8741
• Faraday 8742
• Faraday 8743
• Faraday 8744

Always verify the duct housing model, detector, sampling tube, and installation requirements before purchase.

Technical Specifications

Manufacturer: Siemens

Model: FDBZ-WT

Stock Number: S54319-B26-A1

Product Type: Weather-Tight Air Duct Housing Enclosure

Application: Commercial Fire Alarm Duct Detection Systems

Protection Rating: NEMA 4X

Additional Ratings: UL 50 and CSA

Construction: Reinforced Stainless Steel

Access: Key-Locked Front Cover

Installation Location: Indoor Wet, High-Humidity, and Approved Weather-Exposed Areas

Mounting: Directly to HVAC Ductwork

Detector Included: No

Duct Housing Included: No

Electrical Function: None; Protective Enclosure Only

Listings and Approvals: Verify the enclosure label and complete installed system requirements.

Applications

The Siemens FDBZ-WT is used where a compatible air duct detector housing requires additional protection from moisture, humidity, falling rain, ice, or demanding environmental conditions. Typical installations include mechanical rooms, industrial facilities, warehouses, parking structures, and commercial HVAC systems.

FDBZ-WT Datasheet