Agency Listings

4-Wire Photoelectric Duct

Smoke Detector

detectors flexible enough to fit configurations from

square to rectangular and everything in between.

Features

Photoelectric, integrated low-flow technology

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Air velocity rating from 100 ft/min to 4,000 ft/min (0.5 m/s to 20.32

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m/sec)

Versatile mounting options: square or rectangular configuration

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Plug-in sensor offers superb false alarm immunity and the latest

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sensor technology

Broad ranges for operating temperature (–4°F to 158°F) and

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humidity (0% to 95% non-condensing)

Patented sampling tube installs from front or back of the detector

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with no tools required

Increased wiring space with a newly added ¾-inch conduit

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knockout

One easy-access Test/Reset button and improved LED status

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Patented interconnect feature for multi-fan shutdown

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New high contrast terminal designations

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Built-in short circuit protection from operator wiring errors

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Field selectable settings for configuring the detector

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Two DPDT Form-C relay contacts

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24 VAC/DC or 120VAC

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Backward compatibility with existing Innovair products, including

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remote accessories

The InnovairFlex D4120 4-wire photoelectric duct smoke

detector features a pivoting housing that fits both square and

rectangular footprints and mounts to round or rectangular ductwork.

This unit senses smoke in the most challenging conditions, operating

in airflow speeds of 100 to 4,000 feet per minute, temperatures

of –4°F to 158°F, and a humidity range of 0 to 95 percent (non-

condensing). A plug-in sensor head offers improved false alarm

immunity and simple installation, testing, and maintenance. An

improved cover design isolates the sensor head from the low-flow

feature for simple maintenance.

The InnovairFlex housing provides ample wiring space, a ¾-inch

conduit knockout, and built-in short circuit protection to prevent

damage to sensitive components during installation. High contrast

terminal designations make wiring easy. With its 2:1 sensor-to-power

capability, the power board of the D4120 may be used to monitor

a second sensor ,D4S, simultaneously (i.e., supply and return side).

As many as 50 InnovairFlex detectors can be interconnected. When

one unit senses smoke, all interconnected detectors will switch

their relays; only the detector sensing smoke will go into alarm, thus

pinpointing the fire source.

An easy-access Test/Reset button makes it possible to test the unit

with the cover on. Three DIP switches can be used to configure field

selectable settings: cover tamper delay, number of sensors to be

controlled, and shut down on trouble option. Each power board

has two LEDs that can be used to indicate the status of connected

sensors, and a quick reference imprinted on the cover explains the

LED status indications (Standby, Maintenance, Trouble, and Alarm).

The InnovairFlex duct smoke detector can be customized to meet

local codes and specifications without additional wiring. The new

InnovairFlex product line is compatible with all previous Innovair

models, including remote test accessories.

WARNING: Duct smoke detectors are NOT a substitute for open

area smoke detectors;

NOT a substitute for early warning detection;

NOT a replacement for a building’s regular fire detection system.

Refer to NFPA 72 and 90A for additional information.