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ManualsBrandsEmerson Flow Controls ManualsA Series Thermal Expansion Valves3/8" x 1/2" ODF S/T Thermal Expansion Valve (2-1/2 Ton)
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Oil Controls
253
DCFM Charge Calculations
Example:
System: 10 tons, R-22
Evaporator Temperature: -32C/-27F
Condensing Temperature: 46C/115F
In the DCFM graphs below for R-22, follow the -32C/-27F evaporator
temperature line to the intersection with the 46C/115F condensing
temperature line. Extend a horizontal line from this point into the
DCFM / ton line. Then, multiply the DCFM / ton factor by the capacity
in tons provided to calculate the total compressor charge (DCFM).
How to Calculate DCFM Charge
DCFM = Cubic feet per minute
Example:
0.72
DCFM
x 10 ton = 7.2 CFM
ton
Oil Separator selected: AF-58889
Evaporator temperature
Condenser temperature
Evaporator temperature
Condenser temperature
2004FC-118 R14 (10/14) Emerson
™
valves, controls and system protectors – General Purpose Catalog
Oil Controls
OC 1
DCFM Charge Calculations
Example:
System: 10 tons, R-22
Evaporator Temperature: -32C/-27F
Condensing Temperature: 46C/115F
In the DCFM graphs below for R-22, follow the -32C/-27F evaporator
temperature line to the intersection with the 46C/115F condensing
temperature line. Extend a horizontal line from this point into the
DCFM / ton line. Then, multiply the DCFM / ton factor by the capacity
in tons provided to calculate the total compressor charge (DCFM).
How to Calculate DCFM Charge
DCFM = Cubic feet per minute
Example:
0.72
DCFM
x 10 ton = 7.2 CFM
ton
Oil Separator selected: AF-58889
Evaporator temperature
Condenser temperature
Evaporator temperature
Condenser temperature
2004FC-118 R14 (10/14) Emerson
™
valves, controls and system protectors – General Purpose Catalog
Oil Controls
OC 1
DCFM Charge Calculations
Example:
System: 10 tons, R-22
Evaporator Temperature: -32C/-27F
Condensing Temperature: 46C/115F
In the DCFM graphs below for R-22, follow the -32C/-27F evaporator
temperature line to the intersection with the 46C/115F condensing
temperature line. Extend a horizontal line from this point into the
DCFM / ton line. Then, multiply the DCFM / ton factor by the capacity
in tons provided to calculate the total compressor charge (DCFM).
How to Calculate DCFM Charge
DCFM = Cubic feet per minute
Example:
0.72
DCFM
x 10 ton = 7.2 CFM
ton
Oil Separator selected: AF-58889
Evaporator temperature
Condenser temperature
Evaporator temperature
Condenser temperature