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Duct Detectors

InnovairFlex™ 2D51 Duct Smoke Detector

2D51 duct smoke detectors are low-profile photoelectric detectors designed for special applications, specifically for use in no-flow or low-flow air-handling systems (0 to 4,000 FPM).

Overview

2D51 duct smoke detectors are low-profile photoelectric detectors designed for special applications, specifically for use in no-flow or low-flow air-handling systems (0 to 4,000 fpm). Pendant or plenum mounted 2D51 detectors are intended to be installed into B210LP bases and wired to a D4P120 power board only control units. D4P120 power boards are capable of controlling up to two 2D51 sensors. Pendant mounted in a standard electrical boxes within ducts, the twist-in/twist-out heads allows easy removal from bases for quick cleaning and maintenance. 2D51 heads can be locally tested using a magnet or by using the test/reset pushbutton on the D4P120 power board.

Features & Benefits:
  • Low standby current
  • Two LEDs blink in standby
  • Field sensitivity metering of detector to meet the requirements of NFPA 72 with the use of RTS2/RTS2-AOS and SENS-RDR
  • Designed for mounting on a standard electrical box
  • SEMS screws for easy wiring and positive wire retention
  • Removable cover and insect screen for field cleaning
  • Remote push button test/reset, LEDs provide visual indications
  • Onboard supervisory and alarm relays
  • Accepts 24 or 120V supply voltage
  • Interconnect up to 100 units for common functions
Certifications:
  • UL Listed
  • FM Approved
  • CSFM
Others
Name
Description
File Size
Date
Size
Drywall Dust Problems with Duct Smoke Detectors Tech Bulletin
application/pdf 228.38 KB
6/22/2022
228.38 KB
2D51 BIM File
application/x-tika-msoffice 736 KB
7/24/2023
736 KB
Duct Smoke Detectors Applications Guide
application/pdf 898.78 KB
8/17/2023
898.78 KB
2D51 Photoelectric Smoke Detector
application/pdf 729.04 KB
5/8/2023
729.04 KB
System-Connected CO Detectors Applications Guide
application/pdf 291.49 KB
5/11/2023
291.49 KB
2D51 Photoelectric Smoke Detector Manual
application/pdf 729.04 KB
5/11/2023
729.04 KB
2D51 Duct Smoke Detector for Special Applications
application/pdf 730.89 KB
5/17/2023
730.89 KB
2D51 Duct Smoke Detector for Special Applications Datasheet
application/pdf 730.89 KB
5/17/2023
730.89 KB
HVAC Product Overview
application/pdf 536.86 KB
5/11/2023
536.86 KB
HVAC Product Overview Brochure
application/pdf 536.86 KB
5/11/2023
536.86 KB
Brochure
Name
Description
File Size
Date
Size
Fire Safety Product Catalog
application/pdf 3.65 MB
5/11/2023
3.65 MB
Base - Detector Cross Reference (Legacy) Brochure
application/pdf 110.57 KB
5/11/2023
110.57 KB
Base-Detector Cross Reference (Legacy)-Competitive Comparisons
application/pdf 110.57 KB
5/11/2023
110.57 KB
Installation Instructions
Name
Description
File Size
Date
Size
2D51A Photoelectric Smoke Detector Installation Guide
application/pdf 319.18 KB
5/8/2023
319.18 KB
Data Sheet
Name
Description
File Size
Date
Size
InnovairFlex Conventional Duct Smoke Detectors Data Sheet
application/pdf 140.38 KB
5/14/2023
140.38 KB
Name
Description
File Size
Date
Size
Drywall Dust Problems with Duct Smoke Detectors Tech Bulletin
228.38 KB
6/22/2022
228.38 KB
2D51 BIM File
736 KB
7/24/2023
736 KB
Duct Smoke Detectors Applications Guide
898.78 KB
8/17/2023
898.78 KB
2D51 Photoelectric Smoke Detector
729.04 KB
5/8/2023
729.04 KB
System-Connected CO Detectors Applications Guide
291.49 KB
5/11/2023
291.49 KB
InnovairFlex Conventional Duct Smoke Detectors Data Sheet
140.38 KB
5/14/2023
140.38 KB
2D51 Photoelectric Smoke Detector Manual
729.04 KB
5/11/2023
729.04 KB
2D51 Duct Smoke Detector for Special Applications
730.89 KB
5/17/2023
730.89 KB
2D51 Duct Smoke Detector for Special Applications Datasheet
730.89 KB
5/17/2023
730.89 KB
HVAC Product Overview
536.86 KB
5/11/2023
536.86 KB
Fire Safety Product Catalog
3.65 MB
5/11/2023
3.65 MB
HVAC Product Overview Brochure
536.86 KB
5/11/2023
536.86 KB
Base - Detector Cross Reference (Legacy) Brochure
110.57 KB
5/11/2023
110.57 KB
2D51A Photoelectric Smoke Detector Installation Guide
319.18 KB
5/8/2023
319.18 KB
Base-Detector Cross Reference (Legacy)-Competitive Comparisons
110.57 KB
5/11/2023
110.57 KB
Name
Description
File Size
Date
Size
Drywall Dust Problems with Duct Smoke Detectors Tech Bulletin
228.38 KB
6/22/2022
2D51 BIM File
736 KB
7/24/2023
Duct Smoke Detectors Applications Guide
898.78 KB
8/17/2023
2D51 Photoelectric Smoke Detector
729.04 KB
5/8/2023
System-Connected CO Detectors Applications Guide
291.49 KB
5/11/2023
2D51 Photoelectric Smoke Detector Manual
729.04 KB
5/11/2023
2D51 Duct Smoke Detector for Special Applications
730.89 KB
5/17/2023
2D51 Duct Smoke Detector for Special Applications Datasheet
730.89 KB
5/17/2023
HVAC Product Overview
536.86 KB
5/11/2023
HVAC Product Overview Brochure
536.86 KB
5/11/2023
Fire Safety Product Catalog
3.65 MB
5/11/2023
Base - Detector Cross Reference (Legacy) Brochure
110.57 KB
5/11/2023
Base-Detector Cross Reference (Legacy)-Competitive Comparisons
110.57 KB
5/11/2023
2D51A Photoelectric Smoke Detector Installation Guide
319.18 KB
5/8/2023
InnovairFlex Conventional Duct Smoke Detectors Data Sheet
140.38 KB
5/14/2023