Lennox EL23XCV Series User Manual

Page 54
Verifying Suction Pressure Transducer Operation
Using a multimeter set to VDC with the Suction Pressure Transducer connected to the "Suct P" 3-pin connector on the
control board. Pin 1 (Red wire +5VDC) to Pin 3 (Black wire - GND) should read 5 VDC continuous. Pin 2 (Blue wire output
from transducer) to Pin 3 (Black - GND) should read 0.5 to 4.5 VDC and will vary depending on suction pressure mea-
sured. See Table 10.
VDC
FIGURE 26. Suction Pressure Transducer Voltage
TABLE 10. Suction Pressure Transducer Output Voltage
Suction Pressure
(PSIG)
DC Voltage Output
(Pin 2 to Pin 3)
Suction Pressure
(PSIG)
DC Voltage Output
(Pin 2 to Pin 3)
0 0.49 110 2.69
10 0.69 120 2.89
20 0.89 130 3.09
30 1.09 140 3.29
40 1.29 150 3.49
50 1.49 160 3.69
60 1.69 170 3.89
70 1.89 180 4.09
80 2.09 190 4.29
90 2.29 200 4.49
100 2.49 210 4.50

Lennox EL23XCV Series Specifications

General

Brand	Lennox
Model	EL23XCV Series
Category	Air Handlers
Language	English