Phase B • 7 calculators

Field Calculators

Formula TestedNo automatic diagnosis

Superheat

Formula Tested

Suction-line °FEvaporator saturation °F13°F

Line temperature − saturation temperature

Subcooling

Formula Tested

Condensing saturation °FLiquid-line °F13°F

Saturation temperature − line temperature

TESP

Formula Tested

Return staticSupply static0.55 in. w.c.

|return| + |supply|

Temperature rise

Formula Tested

Supply °FReturn °F50°F

Supply − return

Temperature split

Formula Tested

Return °FSupply °F20°F

Return − supply

Compression ratio

Formula Tested

Discharge psigSuction psigAtmospheric psia3.08

(discharge psig + atmosphere) ÷ (suction psig + atmosphere)

Ohm’s Law

Formula Tested

VoltsAmpsResistance ΩEnter two known values

Requires enough known values.

Calculation is not diagnosis

Verify units, inputs, instrumentation, equipment state, and manufacturer information. Fahrenheit/Celsius conversion changes units only; it does not create equipment targets.