17
Fig. 19 — Smoke Detector Sensor
Smoke Detector Locations
SUPPLY AIR
The supply-air smoke detector sensor is located to the left of the
unit’s indoor (supply) fan. (See Fig. 20.) Access is through the fan
access panel. There is no sampling tube used at this location. The
sampling tube inlet extends through the side plate of the fan hous
-
ing (into a high pressure area). The controller is located on a
bracket to the right of the return filter, accessed through the lift-off
filter panel.
Fig. 20 — Typical Supply Air Smoke Detector Sensor
Location
RETURN AIR WITHOUT ECONOMIZER
The sampling tube is located across the return air opening on the
unit basepan. (See Fig. 21.) The holes in the sampling tube face
downward, into the return air stream. The sampling tube is con
-
nected via tubing to the return air sensor that is mounted on a
bracket high on the partition between return filter and controller
location. (This sensor is shipped in a flat-mounting location. In
-
stallation requires that this sensor be relocated to its operating lo
-
cation and the tubing to the sampling tube be connected. See in
-
stallation steps below.)
Fig. 21 — Typical Return Air Detector Location
Completing Installation of Return-Air Smoke Sensor
1. Unscrew the two screws holding the return air smoke detector
assembly. See Fig. 22, Step 1. Save the screws.
2. Turn the assembly 90 degrees and then rotate end to end.
Make sure that the elbow fitting is pointing down. See
Fig. 22, Step 2.
3. Screw the sensor and detector plate into its operating position
using screws from Step 1. See Fig. 22, Step 3.
4. Connect the flexible tube on the sampling inlet to the sam
-
pling tube on the basepan.
FIOP Smoke Detector Wiring and Response
All units: FIOP smoke detector is configured to automatically shut
down all unit operations when smoke condition is detected. See
Fig. 23.
HIGHLIGHT A
JMP 3 is factory-cut, transferring unit control to smoke detector.
HIGHLIGHT B
Smoke detector NC contact set will open on smoke alarm condi
-
tion, de-energizing the ORN conductor.
HIGHLIGHT C
24-v power signal via ORN lead is removed at Smoke Detector in
-
put on LCTB; all unit operations cease immediately.
HIGHLIGHT D
On smoke alarm condition, the smoke detector NO Alarm contact
will close, supplying 24-v power to GRA conductor.
HIGHLIGHT E
WHT lead at Smoke Alarm input on LCTB provides 24-v signal
to FIOP DDC control.
Duct smoke sensor
See
Detail A
Exhaust tube
Plug
Sampling tube
(ordered separately)
Intake
gasket
Cover gasket
(ordering option)
TSD-CO2
(ordering option)
Sensor housing
and electronics
Exhaust gasket
Coupling
Sensor cover
Detail A
Magnetic
test/reset
switch
Alarm
Trouble
Power
Dirty
SUPPLY AIR
SMOKE
DETECTOR
SENSOR
*RA detector must be moved from shipping
position to operating position by installer.
RETURN AIR DETECTOR
SAMPLING TUBE
RETURN AIR
DETECTOR MODULE
(Shipping position
shown)*
CONTROLLER
MODULE
Содержание 48LC 14
Страница 27: ...27 Fig 38 Integrated Gas Control IGC Board RED LED STATUS...
Страница 81: ...81 Fig B Typical Electromechanical Control Wiring Diagram 48LC 14 26 APPENDIX D WIRING DIAGRAMS...
Страница 82: ...82 Fig C 48LC 14 26 Systemvu Control Schematic APPENDIX D WIRING DIAGRAMS...
Страница 83: ...83 Fig D 48LC 14 26 RTU Open Control Wiring Diagram APPENDIX D WIRING DIAGRAMS...
Страница 85: ......
