28
Fig. 43 — Return-Air Sampling Tube Location
Fig. 44 — Return-Air Detector Shipping Position
Completing Installation of Return-Air Smoke
Sensor
1. Unscrew the two screws holding the Return Air Sensor
detector plate. See Fig. 44. Save the screws.
2. Remove the Return Air Sensor and its detector plate.
3. Rotate the detector plate so the sensor is facing outwards
and the sampling tube connection is on the bottom. See
Fig. 45.
4. Screw the sensor and detector plate into its operating posi-
tion 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. 45.
5. Connect the flexible tube on the sampling inlet to the sam-
pling tube on the base pan.
6. For units with an economizer, the sampling tube is inte-
grated into the economizer housing but the connection of
the flexible tubing to the sampling tube is the same.
FIOP Smoke Detector Wiring and Response
All units: FIOP smoke detector is configured to automatically
shut down all unit operations when smoke condition is detect-
ed. See Fig. 46, Typical Smoke Detector System Wiring.
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 con-
dition, de-energizing the ORN conductor.
Fig. 45 — Return-Air Sensor Operating Position
HIGHLIGHT C:
24-v power signal via ORN lead is removed at smoke detector
input on CTB (Control Terminal Board); all unit operations
cease immediately.
PREMIERLINK CONTROL:
Unit operating functions (fan, cooling and heating) are termi-
nated as described above. In addition:
HIGHLIGHT D:
On smoke alarm condition, the smoke detector NO Alarm con-
tact will close, supplying 24-v power to GRA conductor.
HIGHLIGHT E:
GRA lead at Smoke Alarm input on CTB provides 24-v signal
to FIOP DDC control.
PREMIERLINK:
This signal is conveyed to PremierLink FIOPs TB1 at terminal
TB1-6 (BLU lead). This signal initiates the FSD sequence by
the PremierLink control. FSD status is reported to connected
CCN network.
RTU-OPEN:
The 24-v signal is conveyed to RTU-OPEN’s J1-10 input termi-
nal. This signal initiates the FSD sequence by the RTU-OPEN
control. FSD status is reported to connected BAS network.
USING REMOTE LOGIC:
Five conductors are provided for field use (see Highlight F in
Fig. 46) for additional annunciation functions.
ADDITIONAL APPLICATION DATA
Refer to Application Data for 50KCQ*04-06 for discussions
on additional control features of these smoke detectors includ-
ing multiple unit coordination. See Fig. 46.
RETURN AIR
SAMPLING TUBE
SAMPLE TUBE
SCREWS
FLEXIBLE EXHAUST
TUBES
RETURN AIR SENSOR
(Operating Position Shown)
SCREWS (2)
SAMPLE TUBE
CONTROLLER
MODULE
Summary of Contents for WeatherMaker 50KCQ A04 Series
Page 34: ...34 Fig 53 RTU Open Overlay for Economizer Wiring ...
Page 35: ...35 Fig 54 VFD Overlay for W2770 Controller Wiring ...
Page 70: ...70 Fig C 50KCQ A04 A05 A06 Control Wiring Diagram 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Page 71: ...71 Fig D 50KCQ A04 A05 A06 Power Wiring Diagram 208 230 1 60 APPENDIX D WIRING DIAGRAMS ...
Page 72: ...72 Fig E 50KCQ A04 A05 A06 Power Wiring Diagram 208 230 3 60 APPENDIX D WIRING DIAGRAMS ...
Page 73: ...73 Fig F 50KCQ A04 A05 A06 Power Wiring Diagram 460 3 60 APPENDIX D WIRING DIAGRAMS ...
Page 74: ...74 Fig G 50KCQ A04 A05 A06 Power Wiring Diagram 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Page 75: ...75 Fig H 50KCQ Premier Link Control Diagram APPENDIX D WIRING DIAGRAMS ...
Page 76: ...76 Fig I 50KCQ RTU Open Control Diagram APPENDIX D WIRING DIAGRAMS ...
