Emerson Liebert MC Microchannel Outdoor Condenser 28 - 220kW User Manual
Piping
39
Liebert
®
MC
™
Evaporator Subcooling Calculation Worksheet
Subtract Line 6 (Measured Line Temperature) from Line 5 (Liquid Pressure converted to
Temperature) to obtain Calculated Subcooling.
Elevation Correction
Subtract Line 3 (Correction for Condenser Elevation above Evaporator) from Line 8 (Calculated
Subcooling) to obtain Corrected Subcooling.
Verification Against MC Condenser
Subtract Line 7 (MC Condenser Subcooling Reading) from Line 9 (Corrected Subcooling) to obtain
Difference.
• If Line 10 (Difference value) is less than ± 3°F, NO charge adjustment is needed.
• If Line 10 (Difference value) is greater than -3°F, add additional charge.
• If Line 10 (Difference value) is greater than +3°F, remove charge.
• If Line 10 (Difference value) is greater than -3°F, add additional charge.
• If Line 10 (Difference value) is greater than +3°F, remove charge.
Circuit 1
Circuit 2
Refrigerant Type
1.
1.
Ambient Temperature
2.
Condenser Elevation
3.
Condenser Elevation Temperature Correction
4.
Liquid Line Pressure
5.
Liquid Pressure converted to Temperature
6.
Measured Liquid Line Temperature
7.
MC Condenser Subcooling Reading
(Menu ID F50 for Circuit #1 or
Menu ID F51 for Circuit #2)
Menu ID F51 for Circuit #2)
Circuit 1
Circuit 2
Line 5
Line 6
8.
Line 6
8.
Calculated Subcooling
Circuit 1
Circuit 2
Line 8
Line 3
9.
Line 3
9.
Corrected Subcooling
Circuit 1
Circuit 2
Line 9
Line 7
10. Difference
Line 7
10. Difference