Greenheck No Flow Duct Smoke Detector (System Sensor) - Manual

Agency Listings
Duct Smoke Detector for
Special Applications
The System Sensor 2151 low-profile photoelectronic
smoke detector is UL listed to UL 268A specifically for
use in no-flow/low-flow air-handling systems.
Features
• Low-profile smoke detector design
• Low standby current
• Two LEDs blink in standby
• Detector head plugs easily into base
• Built-in test switch
• Built-in tamper-resistant feature
• Field sensitivity metering of detector to meet the requirements of
NFPA 72
• 120VAC and 24VAC/DC bases with built-in shorting spring
• Designed for mounting on standard electrical box
• SEMS screws for easy wiring and positive wire retention
• Removable cover and insect screen for field cleaning
The 2151 is designed for installations where a standard Venturi
principle duct smoke detector is unsuitable. This is the perfect
combination for installation in ducts where the air velocity is below
500 fpm or for duct sizes as small as 8 inches in diameter.
Pendant mounted in a standard electrical box within the duct, the
twist-in/twist-out head allows easy removal from the base for quick
cleaning and maintenance. The detector can be combined with the
System Sensor B114LP 120VAC base or the B114LPBT 24VAC/DC
base.
Remote testing is accomplished using our RTC100 Remote Test Coil
with Low Profile ring accessory that includes the RTS151.
The APA151, Remote Annunciator with Piezo Alarm, can also be
connected to provide an audible and visible indication of smoke
detector status.
S911