39
housing, placing it across the return air opening on the
unit basepan. See Fig. 48. The holes in the sampling tube
face downward, into the return air stream. The sampling
tube is connected through 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. Installation requires
that this sensor be relocated to its operating location and
the tubing to the sampling tube be connected. See
installation steps below.)
RETURN AIR
SAMPLING TUBE
C08129
Fig. 48 -- Return Air Sampling Tube Location
Completing Installation of Return Air Smoke
Sensor:
SAMPLE TUBE
SCREWS
FLEXIBLE EXHAUST TUBE
C12049
Fig. 49 -- Return Air Detector Shipping Position
1. Unscrew the two screws holding the Return Air
Sensor detector plate. See Fig. 49. Save the screws.
2. Remove the Return Air Sensor and its detector plate.
3. Rotate the detector plate so the sensor is facing out-
wards and the sampling tube connection is on the
bottom. See Fig. 50.
4. Screw the sensor and detector plate into its operating
position using screws from Step 1. Make sure the
sampling tube connection is on the bottom and the
exhaust tube is on the top. See Fig. 50.
5. Connect the flexible tube on the sampling inlet to
the sampling tube on the basepan.
6. For units with an economizer, the sampling tube is
integrated into the economizer housing but the con-
nection of the flexible tubing to the sampling tube is
the same.
RETURN AIR SENSOR
(Operating Position Shown)
SCREWS (2)
SAMPLE TUBE
CONTROLLER
MODULE
C12050
Fig. 50 -- Return Air Sensor Operating Position
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. 51, Smoke Detector
Wiring.
Highlight A:
JMP 3 is factory--cut, transferring unit
control to smoke detector.
Highlight B:
Smoke detector AUX1 NC contact set
(terminals 6 to 16) will open on smoke alarm condition,
de--energizing the ORN conductor.
Highlight C:
24V power signal using the ORN lead is
removed at Smoke Detector input on CTB; all unit
operations cease immediately.
PremierLink and RTU--Open Controls:
Unit operating
functions (fan, cooling and heating) are terminated as
described above. In addition:
Highlight D:
On smoke alarm condition, the smoke
detector AUX1 NO contact will set (terminals 6 to 17)
will close, supplying 24 V power to WHT conductor.
Highlight E:
WHT lead at Smoke Alarm input on CTB
provides 24V signal to FIOP DDC control.
PremierLink:
This signal is conveyed to PremierLink
FIOP’s TB1 at terminal TB1--6 (BLU lead). This signal
initiates the
Fire Shutdown (FSD) sequence by the
PremierLink Controller. FSD status is reported to
connected CCN network.
RTU--Open:
The 24V signal is conveyed to RTU--Open’s
J1--10 input terminal. This signal initiates the FSD
sequence by the RTU--Open control. FSD status is
reported to connected BAS network.
Field Use Wires:
Six conductors are provided for field
use for additional annunciation functions; see Highlight F.
See Highlight G for Smoke Detector Alarm and Trouble
contacts.
48TC
Summary of Contents for 48TC 04 Series
Page 27: ...27 COOLING CHARGING CHARTS cont C14064 Fig 33 Cooling Charging Charts 12 5 Ton 48TC...
Page 29: ...29 COOLING CHARGING CHARTS cont C13218 Fig 35 Charging Chart 48TC Size D16 48TC...
Page 40: ...40 C14052 Fig 51 Typical Smoke Detector System Wiring 48TC...
Page 122: ...122 APPENDIX III WIRING DIAGRAMS C12413 Fig 103 48TC A04 A07 Power Diagram 208 230 1 60 48TC...
Page 124: ...124 APPENDIX III WIRING DIAGRAM LIST C12415 Fig 105 48TC A04 A07 Power Diagram 575 3 60 48TC...
Page 126: ...126 APPENDIX III WIRING DIAGRAM LIST C13246 Fig 107 48TC A08 A12 Power Diagram 575 3 60 48TC...
Page 128: ...128 APPENDIX III WIRING DIAGRAM LIST C13247 Fig 109 48TC D08 D12 Power Diagram 575 3 60 48TC...
Page 130: ...130 APPENDIX III WIRING DIAGRAM LIST C13249 Fig 111 48TC D14 Power Diagram 575 3 60 48TC...
Page 139: ...139 APPENDIX III WIRING DIAGRAMS C12423 Fig 120 48TC D16 Power Diagram 575 3 60 48TC...
Page 143: ...143 APPENDIX III WIRING DIAGRAM LIST C13485 Fig 124 48TC 16 PremierLink Control Diagram 48TC...
Page 145: ...145 APPENDIX III WIRING DIAGRAM LIST C13487 Fig 126 48TC 16 RTU Open Control Diagram 48TC...
Page 146: ...146 APPENDIX III WIRING DIAGRAM LIST C14124 Fig 127 48TC D08 14 E08 14 W7220 2 Speed IFM 48TC...
