DMPR-RS311 Johnson Controls Damper Control Accessory

Overview

The Johnson Controls DMPR-RS311 is a B-style fusible link damper control accessory designed to provide a critical failsafe thermal activation mechanism for fire dampers, specifically the FD-1300 series. Serving as a direct replacement for the DMPR-RS201 model, this heat-activated safety device holds damper blades in the open position during standard operation and melts at a precise temperature threshold to mechanically close the damper and contain fire or smoke spread without requiring electrical power.

Features

• Direct Replacement: Engineered to directly replace the DMPR-RS201 model for seamless integration into existing HVAC systems.
• Powerless Failsafe Operation: Operates purely on physical thermal principles, ensuring reliable activation even during power outages or sensor malfunctions.
• B-Style Design: High-load link style optimized for structural strength and mechanical reliability in demanding setups.
• Heavy-Duty Construction: Comprised of durable brass pieces joined by a specialized eutectic solder alloy to withstand continuous operational stress.

Specifications

• Activation Temperature: 165°F (74°C)
• Maximum Ambient Temperature: 100°F (38°C)
• Link Style: B-Style
• System Compatibility: Johnson Controls FD-1300 Fire Dampers
• Component Type: Fusible Link / Safety Damper Replacement Part
• Origin: United States

Applications

• Specifically designed as a thermal trigger for Johnson Controls FD-1300 fire dampers.
• Utilized in commercial, industrial, and residential HVAC ventilation ductwork to prevent the spread of fire through walls and partitions.
• Ideal for climate-controlled indoor spaces requiring standard passive fire protection compliance.