Additional Application Data; Completing Installation Of Return Air; Smoke Sensor - Carrier WeatherExpert Puron 50LC 08 Series Installation Instructions Manual

Smoke Detectors
Smoke detectors are available as factory-installed options on
50LC 08-12 units. Smoke detectors may be specified for supply
air only, for return air without or with economizer, or in combi-
nation of supply air and return air. Return-air smoke detectors
are arranged for vertical return configurations only. All compo-
nents necessary for operation are factory-provided and mounted.
The unit is factory-configured for immediate smoke detector
shutdown operation; additional wiring or modifications to the In-
tegrated Staging Control (ISC) board may be necessary to com-
plete 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. 71 for the as-shipped location.
COMPLETING INSTALLATION

SMOKE SENSOR

1. Unscrew the two screws holding the return air smoke
detector assembly. See Fig. 72, 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. 72, Step 2.
3. Screw the sensor and detector plate into its operating posi-
tion using screws from Step 1. See Fig. 72, Step 3.
4. Connect the flexible tube on the sampling inlet to the sam-
pling tube on the basepan.
Step 1
OF RETURN AIR
Fig. 72 — Completing Installation of Return-Air Smoke Sensor

ADDITIONAL APPLICATION DATA

Refer to Factory-Installed Smoke Detectors for Small and Medi-
um Rooftop Units 2 to 25 Tons for discussions on additional con-
trol features of these smoke detectors including multiple unit coor-
dination.
RETURN AIR
SMOKE DETECTOR
(AS SHIPPED)
Fig. 71 — Return-Air Smoke Detector
Step 2
59
(Shipping Position)
Step 3