Orion-system Water Source Heat Pump X Module Manual de usuario Pagina 29

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Technical Guide
WSHP-X Module
29
OE275-01 Suction Pressure Transducer
Testing for R-22 & R410-A Refrigerant
The Evaporator Coil Temperature is calculated by converting the Suc-
tion Pressure to Temperature. The Suction Pressure is obtained by using
the OE275-01 Suction Pressure Transducer, which is connected into the
Suction Line of the Compressor.
Use the voltage column to check the Suction Pressure Transducer while
connected to the WSHP-X Module. Read voltage with a meter set on
DC volts. If the temperature/voltage or pressure/voltage readings do
not align closely with the chart, your Suction Pressure Transducer is
probably defective and will need to be replaced.
See the OE275-01 Suction Pressure Transducer, Pressure, Temperature,
and Voltage Charts for R-22 and R410-A Refrigerant testing (Tables
6 & 7). The charts show a temperature range from 20°F to 80°F. For
troubleshooting purposes, the DC Voltage readings are also listed with
their corresponding temperatures and pressure.
Table 7: Coil Pressure/Voltage/Temp for OE275-01
Suction Pressure Transducers - R410-A Refrigerant
Troubleshooting
OE275-01 Suction Pressure Transducer Coil Pressure
– Temperature – Voltage Chart for R410-A Refrigerant
Temperature
°F
Pressure
PSI
Signal
DC Volts
Temperature
°F
Pressure
PSI
Signal
DC Volts
21.19 80.94 1.8 59.03 168.10 3.2
24.49 87.16 1.9 61.17 174.32 3.3
27.80 93.39 2.0 63.19 180.55 3.4
30.99 99.62 2.1 65.21 186.78 3.5
33.89 105.84 2.2 67.23 193.00 3.6
36.80 112.07 2.3 69.24 199.23 3.7
39.71 118.29 2.4 71.15 205.46 3.8
42.30 124.52 2.5 72.95 211.68 3.9
44.85 130.75 2.6 74.76 217.91 4.0
47.39 136.97 2.7 76.57 224.14 4.1
49.94 143.2 2.8 78.37 230.36 4.2
52.23 149.42 2.9 80.18 236.59 4.3
54.50 155.65 3.0
56.76 161.88 3.1
Table 6: Coil Pressure/Voltage/Temp for OE275-01
Suction Pressure Transducers - R-22 Refrigerant
OE275-01 Suction Pressure Transducer Coil Pressure
– Temperature – Voltage Chart for R-22 Refrigerant
Temperature
°F
Pressure
PSI
Signal
DC Volts
Temperature
°F
Pressure
PSI
Signal
DC Volts
20.00 31.13 1.0 55.32 93.39 2.0
20.00 37.36 1.1 58.86 99.62 2.1
20.46 43.58 1.2 62.13 105.84 2.2
25.71 49.80 1.3 65.27 112.07 2.3
30.84 56.03 1.4 68.42 118.29 2.4
35.41 62.26 1.5 71.39 124.52 2.5
39.98 68.49 1.6 75.20 130.75 2.6
44.00 74.71 1.7 77.00 136.97 2.7
48.00 80.94 1.8 79.80 143.20 2.8
51.78 87.16 1.9 80.00 149.42 2.9
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