Carrier 48JC04-06, Инструкции по обслуживанию и техническому обслуживанию

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RETURN AIR SMOKE DETECTOR SENSOR WITH
ECONOMIZER
The sampling tube is inserted through the side plates of the
economizer housing, placing it across the return air opening on
the unit basepan. See Fig. 34. The holes in the sampling tube
face downward, into the return air stream. The sampling tube is
connected using tubing to the return air sensor mounted on a
bracket high on the partition between return filter and control -
ler location. The sensor is shipped in a flat-mounting location.
Installation requires the sensor be relocated to its operating lo -
cation and the tubing to the sampling tube be connected. See
installation steps below.
Fig. 34 — Return Air Sampling Tube Location (View
reoriented to show opposite side for clarity.)
Completing Installation of Return Air Smoke
Detector
Use the following steps to complete the installation of the re -
turn air smoke detector.
1. Unscrew the two screws holding the return air sensor
detector plate. See Fig. 35. Save the screws.
Fig. 35 — Return Air Smoke Detector
Shipping Position
2. Remove the return air smoke sensor module and its detec -
tor plate.
3. Rotate the detector plate so the sensor is facing outwards
and the sampling tube connection is on the bottom. See
Fig. 36.
Fig. 36 — Return Air Smoke Detector
Operating Position
4. Screw the sensor and detector plate into its operating position
using screws from Step 1. Ensure the sampling tube connec -
tion is on the bottom and the exhaust tube is on the top.
5. Connect the flexible tube on the sampling inlet to the sam -
pling tube on the basepan.
6. For units with an economizer, the sampling tube is inte -
grated into the economizer housing but connecting the
flexible tubing to the sampling tube is the same.
FIOP Smoke Detector Wiring and Response
ALL UNITS
The FIOP smoke detector is configured to automatically shut
down all unit operations when a smoke condition is detected.
See Fig. 37, Smoke Detector Wiring.
HIGHLIGHT A
Smoke detector NC contact set will open on smoke alarm con
-
dition, de-energizing the ORN conductor.
USING REMOTE LOGIC
Six conductors are provided for field use (see Highlight B) for
additional annunciation functions.
RETURN AIR
SAMPLING TUBE
SAMPLE TUBE
SCREWS
FLEXIBLE EXHAUST TUBES
RETURN AIR SMOKE DETECTOR
(Operating Position Shown)
SCREWS (2)
SAMPLE TUBE
CONTROLLER
MODULE