FDD 7050 Bank Vault Rate-of-Rise Heat Detector

The FDD 7050 Bank Vault Rate-of-Rise Heat Detector provides specialized thermal detection for bank vaults, safes, and vestibule protection applications. Fire Detection Devices designed this detector to recognize rapid temperature increases that may result from an attack on a vault or safe door. In addition, it combines rate-of-rise detection with a 135°F fixed-temperature element for dependable dual-method thermal detection.

Bank Vault and Safe Protection

The FDD 7050 is specifically designed for bank vault and vestibule applications. Unlike a standard building heat detector, this model responds to temperature changes associated with an attack on a protected vault or safe door.

The detector recognizes a minimum temperature increase of approximately 4°C, or 6°F, per minute. Therefore, a rapid increase in temperature can activate the alarm circuit before the fixed-temperature element reaches its operating point.

This specialized response makes the detector suitable for security applications that require thermal detection around vault doors.

Rate-of-Rise Detection

The rate-of-rise portion uses normally open contacts. When the surrounding air temperature increases at the specified minimum rate, the contacts close.

Closing the contacts initiates the connected alarm sequence. As a result, the detector can respond to a rapid thermal event without waiting for the surrounding temperature to reach 135°F.

135°F Fixed-Temperature Protection

The detector also includes an independent fixed-temperature element. This portion uses a spring-loaded plunger held in position by a fusible alloy.

When the temperature reaches approximately 135°F (57°C), the alloy releases the plunger. The plunger then strikes the contacts and holds them closed.

Therefore, the detector provides fixed-temperature protection even when the surrounding temperature does not increase rapidly enough to activate the rate-of-rise function.

Key Features

• Bank vault and vestibule heat detector
• Combination rate-of-rise and fixed-temperature operation
• 135°F (57°C) fixed-temperature rating
• Responds to rapid temperature increases
• 4°C per minute rate-of-rise calibration
• Approximately 6°F per minute activation rate
• Normally open contacts
• Designed for vault and safe door protection
• Specialized heat collector design
• Suitable for door-mounted vault applications
• Can support vestibule mounting
• Designed for compatible alarm circuits
• Complies with UL 681 requirements
• UL Listed
• ULC Listed
• Professional security and detection component

Vault Door Installation

The FDD 7050 installs on brackets on the inside of the vault door. Installers position the heat collector so that it faces toward the door.

Proper placement is important because brackets should not interfere with convection currents passing by the detector. Therefore, installers should follow the manufacturer’s mounting instructions carefully.

The detector can also mount in a vestibule. In this configuration, installers should position it as close as possible to the vault door when the door is in the closed position.

Dual Detection Operation

The combination of rate-of-rise and fixed-temperature detection provides two methods of recognizing abnormal heat conditions.

A rapid increase in temperature can trigger the rate-of-rise contacts. Meanwhile, the independent 135°F element provides a second activation method when the fixed temperature threshold is reached.

This dual operation makes the detector particularly useful for specialized vault protection applications.

Model 7050 vs. 7050-C

Fire Detection Devices offers both the 7050 and 7050-C versions. The standard 7050 uses normally open contacts.

The 7050-C, by comparison, uses normally closed contacts. Therefore, buyers should verify the exact model and contact configuration required by the existing alarm system before ordering a replacement.

Installation and Compatibility

Always confirm alarm panel compatibility, circuit requirements, contact configuration, and mounting location before installation. Also, verify whether the existing system requires the standard 7050 or normally closed 7050-C version.

Because placement affects detector performance, technicians should follow the manufacturer’s installation requirements for vault door or vestibule mounting.

Qualified alarm professionals should install and test the detector. Finally, technicians should verify proper alarm operation after installation according to the system requirements and applicable standards.

Overall, this FDD vault heat detector provides specialized thermal protection for bank vault and safe applications. Its combination of rate-of-rise detection, 135°F fixed-temperature operation, and vault-specific mounting design makes it a practical solution for compatible security and alarm systems.

7050 Datasheet