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Smoke Detectors
Smoke detectors are available as factory-installed options on
50KC models. Smoke detectors may be specified for supply-air
only or for return-air without or with economizer, or in combina
-
tion of supply-air and return-air. All components necessary for op
-
eration are factory-provided and mounted. The unit is factory-con
-
figured for immediate smoke detector shutdown operation; addi
-
tional wiring or modifications to unit terminal board may be
necessary to complete the unit and smoke detector configuration
to meet project requirements.
Units equipped with factory-optional return-air smoke detectors
require a relocation of the sensor module at unit installation. See
Fig. 56 for the as-shipped location.
Fig. 56 — Return Air Smoke Detector, Shipping
Position
Completing Installation of Return Air Smoke Sensor:
1. Unscrew the two screws holding the return-air smoke detec
-
tor assembly. See Fig. 57, 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. 57, Step 2.
3. Screw the sensor and detector plate into its operating position
using screws from Step 1. See Fig. 57, Step 3.
4. Connect the flexible tube on the sampling inlet to the sam
-
pling tube on the basepan.
ADDITIONAL APPLICATION DATA
Refer to the application data document “Factory Installed Smoke
Detectors for Small and Medium Rooftop Units 2 to 25 Tons” for
discussions on additional control features of these smoke detectors
including multiple unit coordination.
PremierLink™ Controller (Factory Option)
For details on operating 50KC-*04-06 units equipped with the
factory-installed PremierLink controller option, refer to the Pre
-
mierLink Retrofit Rooftop Controller Version 3.x Installation,
Start-Up, and Configuration Instructions manual.
RTU Open Controller (Factory-installed Option)
For details on operating 50KC*04-06 units equipped with the fac
-
tory-installed RTU Open controller refer to the
“Factory-Installed
RTU Open Multi-Protocol Controller Control, Start-Up, Opera
-
tion and Troubleshooting”
manual.
Controller Options
LOW AMBIENT
If the unit comes with Electro-Mechanical (EM) control, then no
adjustment is necessary.
If the unit comes with the PremierLink™ or RTU Open control
option, then refer to its installation control manual for details on
adjusting “Cooling Lock-Out” setting and configure for the spe
-
cific job requirements.
Fig. 57 — Completing Installation of Return Air Smoke Sensor
RETURN AIR
SMOKE DETECTOR
(AS SHIPPED)
S
TEP 1
S
TEP 2
S
TEP
3
Summary of Contents for 50KC04
Page 4: ...4 Fig 2 Unit Dimensional Drawing of Units Built On and After 4 15 19...
Page 5: ...5 Fig 3 Unit Dimensional Drawing of Units Built on and Prior to 4 15 19...
Page 6: ...6 Fig 4 Unit Corner Weights and Clearances...
Page 7: ...7 Fig 5 Base Rail Details...
Page 8: ...8 Fig 6 Thru the Base Charts...
Page 35: ...35 Fig 49 Electro Mechanical Control Wiring Diagram...
Page 36: ...36 Fig 50 Electro Mechanical Control Wiring Diagram with Humidi MiZer System...
Page 37: ...37 Fig 51 Electro Mechanical Power Wiring...
Page 38: ...38 Fig 52 PremierLink Wiring Schematic...
Page 39: ...39 Fig 53 PremierLink Wiring Schematic with Humidi MiZer System...
Page 40: ...40 Fig 54 RTU Open System Control Wiring Diagram...
Page 41: ...41 Fig 55 RTU Open System Control Wiring Diagram with Humidi MiZer System...
Page 47: ...47 Fig 63 TXV Metering Device Position in Reheat Coil Typical Diagram for Sizes 04 06 TXV...
Page 48: ......
Page 49: ......
