![Smoke Detectors](/images/new-backgrounds/33798/3379883x1.webp)
48TC**16
To wire the return air enthalpy sensor, perform the following:
1.Use a
2.Connect the
Smoke Detectors
Smoke detectors are available as
Units equipped with
System —
The smoke detector system consists of a
Duct smoke sensor
| controller |
| Conduit nuts |
| (supplied by installer) |
| Conduit support plate |
| Terminal block cover |
Controller housing | Cover gasket |
and electronics | (ordering option) |
Conduit couplings | Controller cover |
| |
(supplied by installer) |
|
| Fastener |
| (2X) |
| Trouble |
Alarm | Power |
| Test/reset |
| switch |
C08208
Fig. 81 - Controller Assembly
Duct smoke sensor
Controller —
The controller (see Fig. 81) includes a controller housing, a printed circuit board, and a clear plastic cover. The controller can be connected to one or two compatible duct smoke sensors. The clear plastic cover is secured to the housing with a single captive screw for easy access to the wiring terminals. The controller has three LEDs (for Power, Trouble and Alarm) and a manual test/reset button, all located on the cover face.
Sensor Module —
The sensor module (see Fig. 82) includes a plastic housing, a printed circuit board, a clear plastic cover, a sampling tube inlet and an exhaust tube. The sampling tube (when used) and exhaust tube are attached during installation. The sampling tube varies in length depending on the size of the rooftop unit. The clear plastic cover permits visual inspections without having to disassemble the sensor. The cover attaches to the sensor housing using four captive screws and forms an airtight chamber around the sensing
Exhaust tube
Exhaust gasket
See
Detail A
Intake gasket
Plug
Sampling tube
(ordered separately)
Coupling
Detail A
Magnetic test/reset switch
Sensor housing and electronics
Cover gasket
(ordering option)
Sensor cover
electronics. Each sensor includes a harness with an RJ45 terminal for connecting to the controller. Each sensor has four LEDs (for Power, Trouble, Alarm and Dirty) and a manual test/reset button (on the
Alarm | Power |
Trouble | Dirty |
C08209
Fig. 82 - Smoke Detector Sensor Module
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