Smoke Detectors; Completing Installation Of Return Air Smoke Sensor; Additional Application Data - Carrier WeatherMaster Series Installation Instructions Manual

Smoke Detectors

Smoke detectors are available as factory-installed options
on 50HC models. Smoke detectors may be specified for Sup-
ply Air only or for Return Air without or with economizer or
in combination of Supply Air and Return Air. All components
necessary for operation are factory-provided and mounted.
The unit is factory-configured for immediate smoke detector
shutdown operation; additional wiring or modifications to
unit terminal board may be necessary to complete the unit
and smoke detector configuration to meet project require-
ments.
Units equipped with factory-optional Return Air smoke
detectors require a relocation of the sensor module at unit in-
stallation. See Fig. 56 for the as-shipped location.
COMPLETING INSTALLATION
SMOKE SENSOR
1. Unscrew the two screws holding the Return Air Smoke
Detector 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
sampling tube on the basepan.
STEP 1
OF RETURN AIR
Fig. 57 — Completing Installation of Return Air Smoke Sensor
RETURN AIR
SMOKE DETECTOR
(AS SHIPPED)
Fig. 56 — Return Air Smoke Detector, Shipping

ADDITIONAL APPLICATION DATA

Refer to the Application Data sheet titled 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.
STEP 2
47
Position
STEP 3