Fire-Resistant Smoke Extraction Damper with Fusible Link

Jiangsu Deli Air Conditioning & Purification Equipment Co., Ltd.
Smoke & Fire Damper (Normally Open Type)

Standard Operation Features:

1. Default Position: Normally open (NO) during regular operation

2. Auto-Shutdown:

   • Fusible link activates at 280°C (BS EN 1366-2 certified)

   • Dual triggering: Thermal sensor + manual override

3. Signal Feedback:

   • Provides closed-position signal output (NO/NC contact)

4. Reset Mechanism:

   • Manual reset required after activation

   • Safety lock prevents automatic reopening

Technical Specifications:

• Valve Material:

  • Body: 1.5mm galvanized steel (SGCC)

  • Blades: 1.2mm stainless steel (304 grade)

• Operating Conditions:

  • Temperature range: -30°C to +120°C (continuous)

  • Withstands 280°C for 90min (GB 15930-2007)

• Electrical Parameters:

  • Signal contact: SPDT 5A/250VAC

  • Cable: Fire-resistant (IEC 60331 compliant)

Certifications:

• CCCF (China Compulsory Fire Certification)

• UL 555S Smoke Damper Listing

• EN 12101-3 Smoke Control Standard

Installation Notes:

1. Must integrate with fire alarm control panel (FACP)

2. Maintain 400mm service clearance for reset operations

3. Duct mounting flanges meet TDCDF 5.1-2018 airtightness class

Ordering Example:
Model: DL-SFD-800NO
Size: 800×800mm
Option:

• With 24VDC actuator

• With position indicator

Warning:
“Post-activation inspection required before resetting”
“Do not paint or modify fusible link assembly”