 TEST CONDITION
Testing must be performed as per the following:
Vehicle condition
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Indoors or in the shade (in a well‐ventilated place)
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Doors
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Closed
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Door windows
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Open
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Hood
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Open
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Temperature control switch or dial
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Maximum cold
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Mode switch
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(Ventilation) set
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Intake switch
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(Recirculation) set
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Fan (blower) speed
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Maximum speed set
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Engine speed
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Idle speed
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Operate the air conditioning system for 10 minutes before taking measurements.
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 TEST READING
Recirculating‐to‐discharge Air Temperature Table
Inside air (Recirculating air) at blower assembly inlet
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Discharge air temperature at center ventilator °C (°F)
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Relative humidity %
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Air temperature °C (°F)
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50 ‐ 60
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20 (68)
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6.0 – 8.0 (43 – 46)
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25 (77)
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8.4 – 10.9 (47 – 52)
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30 (86)
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14.5 – 17.5 (58 – 64)
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60 ‐ 70
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20 (68)
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7.1 – 9.1 (45 – 48)
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25 (77)
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10.9 – 13.4 (52 – 57)
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30 (86)
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17.5 – 20.5 (64 – 69)
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Ambient Air Temperature‐to‐operating Pressure Table
Ambient air
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High‐pressure (Discharge side) kPa (kg/cm2, psi)
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Low‐pressure (Suction side) kPa (kg/cm2, psi)
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Relative humidity %
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Air temperature °C (°F)
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50 ‐ 70
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25 (77)
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1,204 – 1,471 (12.3 – 15.0, 174.6 – 213.3)
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171 – 209 (1.7 – 2.1, 24.8 – 30.3)
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30 (86)
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1,300 – 1,590 (13.3 – 16.2, 188.5 – 230.6)
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196 – 240 (2.0 – 2.4, 28.4 – 34.8)
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35 (95)
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1,500 – 1,820 (15.3 – 18.6, 217.5 – 263.9)
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229 – 280 (2.3 – 2.9, 33.2 – 40.6)
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40 (104)
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1,870 – 2,285 (19.1 – 23.3, 271.2 – 331.3)
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292 – 357 (3.0 – 3.6, 42.3 – 51.8)
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