Installation

48/50A Units — The CO2 sensor is to be installed in the predrilled holes located above the auxiliary control box (see Fig. 2).

1.Shut off unit power supply.

2.Open the hinged auxiliary control box access door and secure.

3.Remove the sensor and cover from the sensor mounting plate.

4.Secure mounting plate to bracket (48/50A) with no. 8 screws (see Fig. 3).

5.Wire the electrical harness to the sensor as shown in Fig. 3 and 4.

6.Remove the blankout plate from the partition, just above the auxiliary control box.

7.Attach the sensor to the mounting plate.

8.Mount the bracket to the partition using 2 sheet metal screws (see view F in Fig. 2).

9.Connect the electrical harness (PL18).

10.Restore power to unit.

CO2

SENSOR

48/50P and 48/50Z Units — The CO2 sensor is to be installed in the predrilled holes located in the power exhaust section. See Fig. 5-11.

1.Shut off unit power supply.

2.Open the power exhaust section doors/panels to gain access.

3.Remove the sensor and cover from the sensor mounting plate.

4.Secure mounting plate to the bracket with no. 8 screws.

5.The electrical wire harness for the CO2 sensor is factory installed. Locate the four wires in the power exhaust section. Wire the electrical harness to the sensor as shown in Fig. 4.

6.Attach the sensor to the mounting plate.

Mount the bracket to the appropriate location:

size 030-050 units with power exhaust, see Fig. 5 and 6. size 030-050 units with economizer only, see Fig. 7. size 030-050 units with no economizer or power exhaust, see Fig. 8.

48/50P055-100 and 48/50Z055-105 units with power ex- haust, see Fig. 9.

48/50P055-100 and 48/50Z055-105 units with economiz- er only, see Fig. 10.

48/50P055-100 and 48/50Z055-105 units with no econo- mizer or power exhaust, see Fig. 11.

BRACKET

PARTITION	(48/50A)
	(48/50A)
	ELECTRICAL
	HARNESS

VIEW F

AUXILIARY

CONTROL BOX

Carrier 48/50P030-100 specifications Installation, 48/50A CO2 Sensor Mounting Location

INSTALLATION

Fig. 2 — 48/50A CO2 Sensor Mounting Location